diff --git a/.gitignore b/.gitignore
index b844b143..97ef7367 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
 Gemfile.lock
+.bundle/
+vendor/
diff --git a/.travis.yml b/.travis.yml
index 7277f2f7..83880550 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,9 +1,9 @@
-before_install: sudo apt-get install libicu-dev -y
+before_install: 
+  - sudo apt-get install libicu-dev -y
+  - gem update --system 2.1.11
 rvm:
-  - 1.8.7
-  - 1.9.2
   - 1.9.3
   - 2.0.0
-  - ree
+  - 2.1.1
 notifications:
   disabled: true
diff --git a/Gemfile b/Gemfile
index 3df9dcfc..851fabc2 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,7 +1,2 @@
 source 'https://rubygems.org'
 gemspec
-
-if RUBY_VERSION < "1.9.3"
-  # escape_utils 1.0.0 requires 1.9.3 and above
-  gem "escape_utils", "0.3.2"
-end
diff --git a/LICENSE b/LICENSE
index d1d7570c..f09a7d0a 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,4 +1,4 @@
-Copyright (c) 2011-2013 GitHub, Inc.
+Copyright (c) 2011-2014 GitHub, Inc.
 
 Permission is hereby granted, free of charge, to any person
 obtaining a copy of this software and associated documentation
diff --git a/README.md b/README.md
index 80ab56c0..660ac00c 100644
--- a/README.md
+++ b/README.md
@@ -1,18 +1,17 @@
 # Linguist
 
-We use this library at GitHub to detect blob languages, highlight code, ignore binary files, suppress generated files in diffs and generate language breakdown graphs.
+We use this library at GitHub to detect blob languages, highlight code, ignore binary files, suppress generated files in diffs, and generate language breakdown graphs.
 
 ## Features
 
 ### Language detection
 
-Linguist defines the list of all languages known to GitHub in a [yaml file](https://github.com/github/linguist/blob/master/lib/linguist/languages.yml). In order for a file to be highlighted, a language and lexer must be defined there.
+Linguist defines a list of all languages known to GitHub in a [yaml file](https://github.com/github/linguist/blob/master/lib/linguist/languages.yml). In order for a file to be highlighted, a language and a lexer must be defined there.
 
-Most languages are detected by their file extension. This is the fastest and most common situation.
-
-For disambiguating between files with common extensions, we use a [Bayesian classifier](https://github.com/github/linguist/blob/master/lib/linguist/classifier.rb). For an example, this helps us tell the difference between `.h` files which could be either C, C++, or Obj-C.
-
-In the actual GitHub app we deal with `Grit::Blob` objects. For testing, there is a simple `FileBlob` API.
+Most languages are detected by their file extension. For disambiguating between files with common extensions, we first apply some common-sense heuristics to pick out obvious languages. After that, we use a
+[statistical
+classifier](https://github.com/github/linguist/blob/master/lib/linguist/classifier.rb).
+This process can help us tell the difference between, for example, `.h` files which could be either C, C++, or Obj-C.
 
 ```ruby
 
@@ -27,12 +26,9 @@ See [lib/linguist/language.rb](https://github.com/github/linguist/blob/master/li
 
 The actual syntax highlighting is handled by our Pygments wrapper, [pygments.rb](https://github.com/tmm1/pygments.rb). It also provides a [Lexer abstraction](https://github.com/tmm1/pygments.rb/blob/master/lib/pygments/lexer.rb) that determines which highlighter should be used on a file.
 
-We typically run on a pre-release version of Pygments, [pygments.rb](https://github.com/tmm1/pygments.rb), to get early access to new lexers. The [languages.yml](https://github.com/github/linguist/blob/master/lib/linguist/languages.yml) file is a dump of the lexers we have available on our server.
-
 ### Stats
 
-The Language Graph you see on every repository is built by aggregating the languages of each file in that repository. 
-The top language in the graph determines the project's primary language. Collectively, these stats make up the [Top Languages](https://github.com/languages) page.
+The Language stats bar that you see on every repository is built by aggregating the languages of each file in that repository. The top language in the graph determines the project's primary language.
 
 The repository stats API, accessed through `#languages`, can be used on a directory:
 
@@ -42,10 +38,27 @@ project.language.name  #=> "Ruby"
 project.languages      #=> { "Ruby" => 0.98, "Shell" => 0.02 }
 ```
 
-These stats are also printed out by the `linguist` binary. Try running `linguist` on itself:
+These stats are also printed out by the `linguist` binary. You can use the
+`--breakdown` flag, and the binary will also output the breakdown of files by language.
 
-    $ bundle exec linguist lib/
-    100%  Ruby
+You can try running `linguist` on the `lib/` directory in this repository itself:
+
+    $ bundle exec linguist lib/ --breakdown
+
+    100.00% Ruby
+
+    Ruby:
+    linguist/blob_helper.rb
+    linguist/classifier.rb
+    linguist/file_blob.rb
+    linguist/generated.rb
+    linguist/heuristics.rb
+    linguist/language.rb
+    linguist/md5.rb
+    linguist/repository.rb
+    linguist/samples.rb
+    linguist/tokenizer.rb
+    linguist.rb
 
 #### Ignore vendored files
 
@@ -93,8 +106,50 @@ To update the `samples.json` after adding new files to [`samples/`](https://gith
 
     bundle exec rake samples
 
+### A note on language extensions
+
+Linguist has a number of methods available to it for identifying the language of a particular file. The initial lookup is based upon the extension of the file, possible file extensions are defined in an array called `extensions`. Take a look at this example for example for `Perl`:
+
+```
+Perl:
+  type: programming
+  ace_mode: perl
+  color: "#0298c3"
+  extensions:
+  - .pl
+  - .PL
+  - .perl
+  - .ph
+  - .plx
+  - .pm
+  - .pod
+  - .psgi
+  interpreters:
+  - perl
+```
+Any of the extensions defined are valid but the first in this array should be the most popular.
+
 ### Testing
 
 Sometimes getting the tests running can be too much work, especially if you don't have much Ruby experience. It's okay: be lazy and let our build bot [Travis](http://travis-ci.org/#!/github/linguist) run the tests for you. Just open a pull request and the bot will start cranking away.
 
 Here's our current build status, which is hopefully green: [![Build Status](https://secure.travis-ci.org/github/linguist.png?branch=master)](http://travis-ci.org/github/linguist)
+
+### Releasing
+
+If you are the current maintainer of this gem:
+
+ 0. Create a branch for the release: `git checkout -b cut-release-vxx.xx.xx`
+ 0. Make sure your local dependencies are up to date: `bundle install`
+ 0. Ensure that samples are updated: `bundle exec rake samples`
+ 0. Ensure that tests are green: `bundle exec rake test`
+ 0. Bump gem version in `lib/linguist/version.rb`.  For example, [like this](https://github.com/github/linguist/commit/8d2ea90a5ba3b2fe6e1508b7155aa4632eea2985).
+ 0. Make a PR to github/linguist.  For example, [#1238](https://github.com/github/linguist/pull/1238).
+ 0. Build a local gem: `gem build github-linguist.gemspec`
+ 0. Testing:
+   0. Bump the Gemfile and Gemfile.lock versions for an app which relies on this gem
+   0. Install the new gem locally
+   0. Test behavior locally, branch deploy, whatever needs to happen
+ 0. Merge github/linguist PR
+ 0. Tag and push: `git tag vx.xx.xx; git push --tags`
+ 0. Push to rubygems.org -- `gem push github-linguist-2.10.12.gem`
diff --git a/Rakefile b/Rakefile
index 0b3d16a4..e89e75a9 100644
--- a/Rakefile
+++ b/Rakefile
@@ -1,7 +1,7 @@
+require 'json'
 require 'rake/clean'
 require 'rake/testtask'
 require 'yaml'
-require 'json'
 
 task :default => :test
 
diff --git a/bin/linguist b/bin/linguist
index c428fa67..2cfa8064 100755
--- a/bin/linguist
+++ b/bin/linguist
@@ -1,14 +1,22 @@
 #!/usr/bin/env ruby
 
 # linguist — detect language type for a file, or, given a directory, determine language breakdown
-#
-# usage: linguist <path>
+#     usage: linguist <path> [<--breakdown>]
 
 require 'linguist/file_blob'
 require 'linguist/repository'
 
 path = ARGV[0] || Dir.pwd
 
+# special case if not given a directory but still given the --breakdown option
+if path == "--breakdown"
+  path = Dir.pwd
+  breakdown = true
+end
+
+ARGV.shift
+breakdown = true if ARGV[0] == "--breakdown"
+
 if File.directory?(path)
   repo = Linguist::Repository.from_directory(path)
   repo.languages.sort_by { |_, size| size }.reverse.each do |language, size|
@@ -16,6 +24,17 @@ if File.directory?(path)
     percentage = sprintf '%.2f' % percentage
     puts "%-7s %s" % ["#{percentage}%", language]
   end
+  if breakdown
+    puts
+    file_breakdown = repo.breakdown_by_file
+    file_breakdown.each do |lang, files|
+      puts "#{lang}:" 
+      files.each do |file|
+        puts file
+      end
+      puts
+    end
+  end
 elsif File.file?(path)
   blob = Linguist::FileBlob.new(path, Dir.pwd)
   type = if blob.text?
diff --git a/github-linguist.gemspec b/github-linguist.gemspec
index f5f31064..d4c2337a 100644
--- a/github-linguist.gemspec
+++ b/github-linguist.gemspec
@@ -1,18 +1,22 @@
+require File.expand_path('../lib/linguist/version', __FILE__)
+
 Gem::Specification.new do |s|
   s.name    = 'github-linguist'
-  s.version = '2.10.2'
+  s.version = Linguist::VERSION
   s.summary = "GitHub Language detection"
+  s.description = 'We use this library at GitHub to detect blob languages, highlight code, ignore binary files, suppress generated files in diffs, and generate language breakdown graphs.'
 
   s.authors  = "GitHub"
   s.homepage = "https://github.com/github/linguist"
+  s.license  = "MIT"
 
   s.files = Dir['lib/**/*']
   s.executables << 'linguist'
 
-  s.add_dependency 'charlock_holmes', '~> 0.6.6'
-  s.add_dependency 'escape_utils',    '>= 0.3.1'
+  s.add_dependency 'charlock_holmes', '~> 0.7.3'
+  s.add_dependency 'escape_utils',    '~> 1.0.1'
   s.add_dependency 'mime-types',      '~> 1.19'
-  s.add_dependency 'pygments.rb',     '~> 0.5.4'
+  s.add_dependency 'pygments.rb',     '~> 0.6.0'
 
   s.add_development_dependency 'json'
   s.add_development_dependency 'mocha'
diff --git a/lib/linguist.rb b/lib/linguist.rb
index e717fb67..3714b5a0 100644
--- a/lib/linguist.rb
+++ b/lib/linguist.rb
@@ -1,5 +1,7 @@
 require 'linguist/blob_helper'
 require 'linguist/generated'
+require 'linguist/heuristics'
 require 'linguist/language'
 require 'linguist/repository'
 require 'linguist/samples'
+require 'linguist/version'
diff --git a/lib/linguist/blob_helper.rb b/lib/linguist/blob_helper.rb
index 37793a36..15ab2d9f 100644
--- a/lib/linguist/blob_helper.rb
+++ b/lib/linguist/blob_helper.rb
@@ -112,6 +112,12 @@ module Linguist
       end
     end
 
+    def ruby_encoding
+      if hash = detect_encoding
+        hash[:ruby_encoding]
+      end
+    end
+
     # Try to guess the encoding
     #
     # Returns: a Hash, with :encoding, :confidence, :type
@@ -241,7 +247,31 @@ module Linguist
     def lines
       @lines ||=
         if viewable? && data
-          data.split(/\r\n|\r|\n/, -1)
+          # `data` is usually encoded as ASCII-8BIT even when the content has
+          # been detected as a different encoding. However, we are not allowed
+          # to change the encoding of `data` because we've made the implicit
+          # guarantee that each entry in `lines` is encoded the same way as
+          # `data`.
+          #
+          # Instead, we re-encode each possible newline sequence as the
+          # detected encoding, then force them back to the encoding of `data`
+          # (usually a binary encoding like ASCII-8BIT). This means that the
+          # byte sequence will match how newlines are likely encoded in the
+          # file, but we don't have to change the encoding of `data` as far as
+          # Ruby is concerned. This allows us to correctly parse out each line
+          # without changing the encoding of `data`, and
+          # also--importantly--without having to duplicate many (potentially
+          # large) strings.
+          begin
+            encoded_newlines = ["\r\n", "\r", "\n"].
+              map { |nl| nl.encode(ruby_encoding, "ASCII-8BIT").force_encoding(data.encoding) }
+
+            data.split(Regexp.union(encoded_newlines), -1)
+          rescue Encoding::ConverterNotFoundError
+            # The data is not splittable in the detected encoding.  Assume it's
+            # one big line.
+            [data]
+          end
         else
           []
         end
diff --git a/lib/linguist/classifier.rb b/lib/linguist/classifier.rb
index 195087d8..5370bdd8 100644
--- a/lib/linguist/classifier.rb
+++ b/lib/linguist/classifier.rb
@@ -78,18 +78,13 @@ module Linguist
     def classify(tokens, languages)
       return [] if tokens.nil?
       tokens = Tokenizer.tokenize(tokens) if tokens.is_a?(String)
-
       scores = {}
-      if verbosity >= 2
-        dump_all_tokens(tokens, languages)
-      end
+
+      debug_dump_all_tokens(tokens, languages) if verbosity >= 2
+
       languages.each do |language|
-        scores[language] = tokens_probability(tokens, language) +
-                                   language_probability(language)
-        if verbosity >= 1
-          printf "%10s = %10.3f + %7.3f = %10.3f\n",
-            language, tokens_probability(tokens, language), language_probability(language), scores[language]
-        end
+        scores[language] = tokens_probability(tokens, language) + language_probability(language)
+        debug_dump_probabilities(tokens, language, scores[language]) if verbosity >= 1
       end
 
       scores.sort { |a, b| b[1] <=> a[1] }.map { |score| [score[0], score[1]] }
@@ -135,6 +130,11 @@ module Linguist
         @verbosity ||= (ENV['LINGUIST_DEBUG'] || 0).to_i
       end
 
+      def debug_dump_probabilities(tokens, language, score)
+        printf("%10s = %10.3f + %7.3f = %10.3f\n",
+            language, tokens_probability(tokens, language), language_probability(language), score)
+      end
+
       # Internal: show a table of probabilities for each <token,language> pair.
       #
       # The number in each table entry is the number of "points" that each
@@ -145,22 +145,22 @@ module Linguist
       # how much more likely (log of probability ratio) that token is to
       # appear in one language vs. the least-likely language.  Dashes
       # indicate the least-likely language (and zero points) for each token.
-      def dump_all_tokens(tokens, languages)
+      def debug_dump_all_tokens(tokens, languages)
         maxlen = tokens.map { |tok| tok.size }.max
-        
+
         printf "%#{maxlen}s", ""
         puts "    #" + languages.map { |lang| sprintf("%10s", lang) }.join
-        
+
         token_map = Hash.new(0)
         tokens.each { |tok| token_map[tok] += 1 }
-        
+
         token_map.sort.each { |tok, count|
           arr = languages.map { |lang| [lang, token_probability(tok, lang)] }
           min = arr.map { |a,b| b }.min
           minlog = Math.log(min)
           if !arr.inject(true) { |result, n| result && n[1] == arr[0][1] }
             printf "%#{maxlen}s%5d", tok, count
-            
+
             puts arr.map { |ent|
               ent[1] == min ? "         -" : sprintf("%10.3f", count * (Math.log(ent[1]) - minlog))
             }.join
diff --git a/lib/linguist/generated.rb b/lib/linguist/generated.rb
index 7c607250..761288f0 100644
--- a/lib/linguist/generated.rb
+++ b/lib/linguist/generated.rb
@@ -58,10 +58,13 @@ module Linguist
         generated_parser? ||
         generated_net_docfile? ||
         generated_net_designer_file? ||
+        generated_postscript? ||
         generated_protocol_buffer? ||
         generated_jni_header? ||
         composer_lock? ||
-        node_modules?
+        node_modules? ||
+        vcr_cassette? ||
+        generated_by_zephir?
     end
 
     # Internal: Is the blob an XCode project file?
@@ -176,6 +179,29 @@ module Linguist
       false
     end
 
+    # Internal: Is the blob of PostScript generated?
+    #
+    # PostScript files are often generated by other programs. If they tell us so,
+    # we can detect them.
+    #
+    # Returns true or false.
+    def generated_postscript?
+      return false unless ['.ps', '.eps'].include? extname
+
+      # We analyze the "%%Creator:" comment, which contains the author/generator
+      # of the file. If there is one, it should be in one of the first few lines.
+      creator = lines[0..9].find {|line| line =~ /^%%Creator: /}
+      return false if creator.nil?
+
+      # Most generators write their version number, while human authors' or companies'
+      # names don't contain numbers. So look if the line contains digits. Also
+      # look for some special cases without version numbers.
+      return creator =~ /[0-9]/ ||
+        creator.include?("mpage") ||
+        creator.include?("draw") ||
+        creator.include?("ImageMagick")
+    end
+
     # Internal: Is the blob a C++, Java or Python source file generated by the
     # Protocol Buffer compiler?
     #
@@ -198,20 +224,35 @@ module Linguist
                lines[1].include?("#include <jni.h>")
     end
 
-    # node_modules/ can contain large amounts of files, in general not meant
-    # for humans in pull requests.
+    # Internal: Is the blob part of node_modules/, which are not meant for humans in pull requests.
     #
     # Returns true or false.
     def node_modules?
       !!name.match(/node_modules\//)
     end
 
-    # the php composer tool generates a lock file to represent a specific dependency state.
-    # In general not meant for humans in pull requests.
+    # Internal: Is the blob a generated php composer lock file?
     #
     # Returns true or false.
     def composer_lock?
       !!name.match(/composer.lock/)
     end
+
+    # Internal: Is the blob a generated by Zephir
+    #
+    # Returns true or false.
+    def generated_by_zephir?
+      !!name.match(/.\.zep\.(?:c|h|php)$/)
+    end
+
+    # Is the blob a VCR Cassette file?
+    #
+    # Returns true or false
+    def vcr_cassette?
+      return false unless extname == '.yml'
+      return false unless lines.count > 2
+      # VCR Cassettes have "recorded_with: VCR" in the second last line.
+      return lines[-2].include?("recorded_with: VCR")
+    end
   end
 end
diff --git a/lib/linguist/heuristics.rb b/lib/linguist/heuristics.rb
new file mode 100644
index 00000000..c1116780
--- /dev/null
+++ b/lib/linguist/heuristics.rb
@@ -0,0 +1,90 @@
+module Linguist
+  # A collection of simple heuristics that can be used to better analyze languages.
+  class Heuristics
+    ACTIVE = false
+
+    # Public: Given an array of String language names,
+    # apply heuristics against the given data and return an array
+    # of matching languages, or nil.
+    #
+    # data      - Array of tokens or String data to analyze.
+    # languages - Array of language name Strings to restrict to.
+    #
+    # Returns an array of Languages or []
+    def self.find_by_heuristics(data, languages)
+      if active?
+        if languages.all? { |l| ["Objective-C", "C++"].include?(l) }
+          disambiguate_c(data, languages)
+        end
+        if languages.all? { |l| ["Perl", "Prolog"].include?(l) }
+          disambiguate_pl(data, languages)
+        end
+        if languages.all? { |l| ["ECL", "Prolog"].include?(l) }
+          disambiguate_ecl(data, languages)
+        end
+        if languages.all? { |l| ["TypeScript", "XML"].include?(l) }
+          disambiguate_ts(data, languages)
+        end
+        if languages.all? { |l| ["Common Lisp", "OpenCL"].include?(l) }
+          disambiguate_cl(data, languages)
+        end
+        if languages.all? { |l| ["Rebol", "R"].include?(l) }
+          disambiguate_r(data, languages)
+        end
+      end
+    end
+
+    # .h extensions are ambigious between C, C++, and Objective-C.
+    # We want to shortcut look for Objective-C _and_ now C++ too!
+    #
+    # Returns an array of Languages or []
+    def self.disambiguate_c(data, languages)
+      matches = []
+      matches << Language["Objective-C"] if data.include?("@interface")
+      matches << Language["C++"] if data.include?("#include <cstdint>")
+      matches
+    end
+
+    def self.disambiguate_pl(data, languages)
+      matches = []
+      matches << Language["Prolog"] if data.include?(":-")
+      matches << Language["Perl"] if data.include?("use strict")
+      matches
+    end
+
+    def self.disambiguate_ecl(data, languages)
+      matches = []
+      matches << Language["Prolog"] if data.include?(":-")
+      matches << Language["ECL"] if data.include?(":=")
+      matches
+    end
+
+    def self.disambiguate_ts(data, languages)
+      matches = []
+      if (data.include?("</translation>"))
+        matches << Language["XML"]
+      else
+        matches << Language["TypeScript"]
+      end
+      matches
+    end
+
+    def self.disambiguate_cl(data, languages)
+      matches = []
+      matches << Language["Common Lisp"] if data.include?("(defun ")
+      matches << Language["OpenCL"] if /\/\* |\/\/ |^\}/.match(data)
+      matches
+    end
+
+    def self.disambiguate_r(data, languages)
+      matches = []
+      matches << Language["Rebol"] if /\bRebol\b/i.match(data)
+      matches << Language["R"] if data.include?("<-")
+      matches
+    end
+
+    def self.active?
+      !!ACTIVE
+    end
+  end
+end
diff --git a/lib/linguist/language.rb b/lib/linguist/language.rb
index 04562dc2..a8e7a33c 100644
--- a/lib/linguist/language.rb
+++ b/lib/linguist/language.rb
@@ -7,6 +7,7 @@ rescue LoadError
 end
 
 require 'linguist/classifier'
+require 'linguist/heuristics'
 require 'linguist/samples'
 
 module Linguist
@@ -23,7 +24,6 @@ module Linguist
     @extension_index          = Hash.new { |h,k| h[k] = [] }
     @interpreter_index        = Hash.new { |h,k| h[k] = [] }
     @filename_index           = Hash.new { |h,k| h[k] = [] }
-    @primary_extension_index  = {}
 
     # Valid Languages types
     TYPES = [:data, :markup, :programming, :prose]
@@ -32,7 +32,7 @@ module Linguist
     #
     # Returns an array
     def self.detectable_markup
-      ["CSS", "Less", "Sass", "TeX"]
+      ["CSS", "Less", "Sass", "SCSS", "Stylus", "TeX"]
     end
 
     # Detect languages by a specific type
@@ -79,12 +79,6 @@ module Linguist
         @extension_index[extension] << language
       end
 
-      if @primary_extension_index.key?(language.primary_extension)
-        raise ArgumentError, "Duplicate primary extension: #{language.primary_extension}"
-      end
-
-      @primary_extension_index[language.primary_extension] = language
-
       language.interpreters.each do |interpreter|
         @interpreter_index[interpreter] << language
       end
@@ -113,18 +107,32 @@ module Linguist
         name += ".script!"
       end
 
+      # First try to find languages that match based on filename.
       possible_languages = find_by_filename(name)
 
+      # If there is more than one possible language with that extension (or no
+      # extension at all, in the case of extensionless scripts), we need to continue
+      # our detection work
       if possible_languages.length > 1
         data = data.call() if data.respond_to?(:call)
+        possible_language_names = possible_languages.map(&:name)
+
+        # Don't bother with emptiness
         if data.nil? || data == ""
           nil
+        # Check if there's a shebang line and use that as authoritative
         elsif (result = find_by_shebang(data)) && !result.empty?
           result.first
-        elsif classified = Classifier.classify(Samples::DATA, data, possible_languages.map(&:name)).first
+        # No shebang. Still more work to do. Try to find it with our heuristics.
+        elsif (determined = Heuristics.find_by_heuristics(data, possible_language_names)) && !determined.empty?
+          determined.first
+        # Lastly, fall back to the probablistic classifier.
+        elsif classified = Classifier.classify(Samples::DATA, data, possible_language_names ).first
+          # Return the actual Language object based of the string language name (i.e., first element of `#classify`)
           Language[classified[0]]
         end
       else
+        # Simplest and most common case, we can just return the one match based on extension
         possible_languages.first
       end
     end
@@ -176,8 +184,7 @@ module Linguist
     # Returns all matching Languages or [] if none were found.
     def self.find_by_filename(filename)
       basename, extname = File.basename(filename), File.extname(filename)
-      langs = [@primary_extension_index[extname]] +
-              @filename_index[basename] +
+      langs = @filename_index[basename] +
               @extension_index[extname]
       langs.compact.uniq
     end
@@ -284,15 +291,6 @@ module Linguist
       @interpreters = attributes[:interpreters]   || []
       @filenames  = attributes[:filenames]  || []
 
-      unless @primary_extension = attributes[:primary_extension]
-        raise ArgumentError, "#{@name} is missing primary extension"
-      end
-
-      # Prepend primary extension unless its already included
-      if primary_extension && !extensions.include?(primary_extension)
-        @extensions = [primary_extension] + extensions
-      end
-
       # Set popular, and searchable flags
       @popular    = attributes.key?(:popular)    ? attributes[:popular]    : false
       @searchable = attributes.key?(:searchable) ? attributes[:searchable] : true
@@ -380,20 +378,6 @@ module Linguist
     # Returns the extensions Array
     attr_reader :extensions
 
-    # Deprecated: Get primary extension
-    #
-    # Defaults to the first extension but can be overridden
-    # in the languages.yml.
-    #
-    # The primary extension can not be nil. Tests should verify this.
-    #
-    # This attribute is only used by app/helpers/gists_helper.rb for
-    # creating the language dropdown. It really should be using `name`
-    # instead. Would like to drop primary extension.
-    #
-    # Returns the extension String.
-    attr_reader :primary_extension
-
     # Public: Get interpreters
     #
     # Examples
@@ -411,6 +395,27 @@ module Linguist
     #
     # Returns the extensions Array
     attr_reader :filenames
+    
+    # Public: Return all possible extensions for language
+    def all_extensions
+      (extensions + [primary_extension]).uniq
+    end
+
+    # Deprecated: Get primary extension
+    #
+    # Defaults to the first extension but can be overridden
+    # in the languages.yml.
+    #
+    # The primary extension can not be nil. Tests should verify this.
+    #
+    # This method is only used by app/helpers/gists_helper.rb for creating
+    # the language dropdown. It really should be using `name` instead.
+    # Would like to drop primary extension.
+    #
+    # Returns the extension String.
+    def primary_extension
+      extensions.first
+    end
 
     # Public: Get URL escaped name.
     #
@@ -470,7 +475,7 @@ module Linguist
     #
     # Returns html String
     def colorize(text, options = {})
-      lexer.highlight(text, options = {})
+      lexer.highlight(text, options)
     end
 
     # Public: Return name as String representation
@@ -553,9 +558,8 @@ module Linguist
       :group_name        => options['group'],
       :searchable        => options.key?('searchable') ? options['searchable'] : true,
       :search_term       => options['search_term'],
-      :extensions        => options['extensions'].sort,
+      :extensions        => [options['extensions'].first] + options['extensions'][1..-1].sort,
       :interpreters      => options['interpreters'].sort,
-      :primary_extension => options['primary_extension'],
       :filenames         => options['filenames'],
       :popular           => popular.include?(name)
     )
diff --git a/lib/linguist/languages.yml b/lib/linguist/languages.yml
index ad4f4c97..15c3a588 100644
--- a/lib/linguist/languages.yml
+++ b/lib/linguist/languages.yml
@@ -3,18 +3,15 @@
 # All languages have an associated lexer for syntax highlighting. It
 # defaults to name.downcase, which covers most cases.
 #
-# type              - Either data, programming, markup, or nil
+# type              - Either data, programming, markup, prose, or nil
 # lexer             - An explicit lexer String (defaults to name)
 # aliases           - An Array of additional aliases (implicitly
 #                     includes name.downcase)
 # ace_mode          - A String name of Ace Mode (if available)
 # wrap              - Boolean wrap to enable line wrapping (default: false)
-# extension         - An Array of associated extensions
-# interpreter       - An Array of associated interpreters
-# primary_extension - A String for the main extension associated with
-#                     the language. Must be unique. Used when a Language is picked
-#                     from a dropdown and we need to automatically choose an
-#                     extension.
+# extensions        - An Array of associated extensions (the first one is
+#                     considered the primary extension)
+# interpreters      - An Array of associated interpreters
 # searchable        - Boolean flag to enable searching (defaults to true)
 # search_term       - Deprecated: Some languages maybe indexed under a
 #                     different alias. Avoid defining new exceptions.
@@ -28,13 +25,15 @@
 ABAP:
   type: programming
   lexer: ABAP
-  primary_extension: .abap
+  extensions:
+  - .abap
 
 ANTLR:
   type: programming
   color: "#9DC3FF"
   lexer: ANTLR
-  primary_extension: .g4
+  extensions:
+  - .g4
 
 ASP:
   type: programming
@@ -44,8 +43,8 @@ ASP:
   aliases:
   - aspx
   - aspx-vb
-  primary_extension: .asp
   extensions:
+  - .asp
   - .asax
   - .ascx
   - .ashx
@@ -53,6 +52,18 @@ ASP:
   - .aspx
   - .axd
 
+ATS:
+  type: programming
+  color: "#1ac620"
+  lexer: OCaml
+  aliases:
+  - ats2
+  extensions:
+  - .dats
+  - .atxt
+  - .hats
+  - .sats
+
 ActionScript:
   type: programming
   lexer: ActionScript 3
@@ -60,59 +71,83 @@ ActionScript:
   search_term: as3
   aliases:
   - as3
-  primary_extension: .as
+  extensions:
+  - .as
 
 Ada:
   type: programming
   color: "#02f88c"
-  primary_extension: .adb
   extensions:
+  - .adb
   - .ads
 
 Agda:
   type: programming
   color: "#467C91"
-  primary_extension: .agda
+  extensions:
+  - .agda
+
+Alloy:
+  type: programming  # 'modeling' would be more appropiate
+  lexer: Text only
+  color: "#cc5c24"
+  extensions:
+  - .als
 
 ApacheConf:
   type: markup
   aliases:
   - apache
-  primary_extension: .apacheconf
+  extensions:
+  - .apacheconf
 
 Apex:
   type: programming
   lexer: Text only
-  primary_extension: .cls
+  extensions:
+  - .cls
 
 AppleScript:
   type: programming
   aliases:
   - osascript
-  primary_extension: .applescript
+  extensions:
+  - .applescript
+  - .scpt
+  interpreters:
+  - osascript
 
 Arc:
   type: programming
   color: "#ca2afe"
   lexer: Text only
-  primary_extension: .arc
+  extensions:
+  - .arc
 
 Arduino:
   type: programming
   color: "#bd79d1"
   lexer: C++
-  primary_extension: .ino
+  extensions:
+  - .ino
 
 AsciiDoc:
   type: prose
   lexer: Text only
   ace_mode: asciidoc
   wrap: true
-  primary_extension: .asciidoc
   extensions:
+  - .asciidoc
   - .adoc
   - .asc
 
+AspectJ:
+  type: programming
+  lexer: AspectJ
+  color: "#1957b0"
+  extensions:
+  - .aj
+
 Assembly:
   type: programming
   lexer: NASM
@@ -120,11 +155,14 @@ Assembly:
   search_term: nasm
   aliases:
   - nasm
-  primary_extension: .asm
+  extensions:
+  - .asm
+  - .inc
 
 Augeas:
   type: programming
-  primary_extension: .aug
+  extensions:
+  - .aug
 
 AutoHotkey:
   type: programming
@@ -132,7 +170,8 @@ AutoHotkey:
   color: "#6594b9"
   aliases:
   - ahk
-  primary_extension: .ahk
+  extensions:
+  - .ahk
 
 AutoIt:
   type: programming
@@ -141,13 +180,14 @@ AutoIt:
   - au3
   - AutoIt3
   - AutoItScript
-  primary_extension: .au3
+  extensions:
+  - .au3
 
 Awk:
   type: programming
   lexer: Awk
-  primary_extension: .awk
   extensions:
+  - .awk
   - .auk
   - .gawk
   - .mawk
@@ -164,54 +204,61 @@ Batchfile:
   search_term: bat
   aliases:
   - bat
-  primary_extension: .bat
   extensions:
+  - .bat
   - .cmd
 
 Befunge:
-  primary_extension: .befunge
+  extensions:
+  - .befunge
 
 BlitzBasic:
   type: programming
   aliases:
   - blitzplus
   - blitz3d
-  primary_extension: .bb
   extensions:
+  - .bb
   - .decls
 
 BlitzMax:
-  primary_extension: .bmx
+  extensions:
+  - .bmx
 
 Bluespec:
   type: programming
   lexer: verilog
-  primary_extension: .bsv
+  extensions:
+  - .bsv
 
 Boo:
   type: programming
   color: "#d4bec1"
-  primary_extension: .boo
+  extensions:
+  - .boo
 
 Brainfuck:
-  primary_extension: .b
   extensions:
+  - .b
   - .bf
 
 Brightscript:
   type: programming
   lexer: Text only
-  primary_extension: .brs
+  extensions:
+  - .brs
 
 Bro:
   type: programming
-  primary_extension: .bro
+  extensions:
+  - .bro
 
 C:
   type: programming
   color: "#555"
-  primary_extension: .c
   extensions:
+  - .c
+  - .cats
   - .w
 
 C#:
@@ -221,8 +268,9 @@ C#:
   color: "#5a25a2"
   aliases:
   - csharp
-  primary_extension: .cs
   extensions:
+  - .cs
+  - .cshtml
   - .csx
 
 C++:
@@ -232,23 +280,27 @@ C++:
   color: "#f34b7d"
   aliases:
   - cpp
-  primary_extension: .cpp
   extensions:
+  - .cpp
   - .C
   - .c++
+  - .cc
   - .cxx
   - .H
   - .h++
   - .hh
   - .hpp
   - .hxx
+  - .inl
   - .tcc
   - .tpp
+  - .ipp
 
 C-ObjDump:
   type: data
   lexer: c-objdump
-  primary_extension: .c-objdump
+  extensions:
+  - .c-objdump
 
 C2hs Haskell:
   type: programming
@@ -256,24 +308,26 @@ C2hs Haskell:
   group: Haskell
   aliases:
   - c2hs
-  primary_extension: .chs
+  extensions:
+  - .chs
 
 CLIPS:
   type: programming
   lexer: Text only
-  primary_extension: .clp
+  extensions:
+  - .clp
 
 CMake:
-  primary_extension: .cmake
   extensions:
+  - .cmake
   - .cmake.in
   filenames:
   - CMakeLists.txt
 
 COBOL:
   type: programming
-  primary_extension: .cob
   extensions:
+  - .cob
   - .cbl
   - .ccp
   - .cobol
@@ -281,38 +335,51 @@ COBOL:
 
 CSS:
   ace_mode: css
-  color: "#1f085e"
-  primary_extension: .css
+  color: "#563d7c"
+  extensions:
+  - .css
 
 Ceylon:
   type: programming
   lexer: Ceylon
-  primary_extension: .ceylon
+  extensions:
+  - .ceylon
 
 ChucK:
   lexer: Java
-  primary_extension: .ck
+  extensions:
+  - .ck
+
+Cirru:
+  type: programming
+  color: "#aaaaff"
+  # ace_mode: cirru
+  # lexer: Cirru
+  lexer: Text only
+  extensions:
+  - .cirru
 
 Clean:
   type: programming
   color: "#3a81ad"
   lexer: Text only
-  primary_extension: .icl
   extensions:
+  - .icl
   - .dcl
 
 Clojure:
   type: programming
   ace_mode: clojure
   color: "#db5855"
-  primary_extension: .clj
   extensions:
+  - .clj
   - .cl2
   - .cljc
   - .cljs
   - .cljscm
   - .cljx
   - .hic
+  - .cljs.hl
   filenames:
   - riemann.config
 
@@ -323,13 +390,15 @@ CoffeeScript:
   aliases:
   - coffee
   - coffee-script
-  primary_extension: .coffee
   extensions:
+  - .coffee
   - ._coffee
   - .cson
   - .iced
   filenames:
   - Cakefile
+  interpreters:
+  - coffee
 
 ColdFusion:
   type: programming
@@ -339,8 +408,8 @@ ColdFusion:
   search_term: cfm
   aliases:
   - cfm
-  primary_extension: .cfm
   extensions:
+  - .cfm
   - .cfc
 
 Common Lisp:
@@ -348,8 +417,8 @@ Common Lisp:
   color: "#3fb68b"
   aliases:
   - lisp
-  primary_extension: .lisp
   extensions:
+  - .lisp
   - .asd
   - .cl
   - .lsp
@@ -362,15 +431,24 @@ Common Lisp:
   - clisp
   - ecl
 
+Component Pascal:
+  type: programming
+  lexer: Delphi
+  color: "#b0ce4e"
+  extensions:
+  - .cp
+  - .cps
+
 Coq:
   type: programming
-  primary_extension: .coq
+  extensions:
+  - .coq
 
 Cpp-ObjDump:
   type: data
   lexer: cpp-objdump
-  primary_extension: .cppobjdump
   extensions:
+  - .cppobjdump
   - .c++objdump
   - .cxx-objdump
 
@@ -378,114 +456,156 @@ Creole:
   type: prose
   lexer: Text only
   wrap: true
-  primary_extension: .creole
+  extensions:
+  - .creole
+
+Crystal:
+  type: programming
+  lexer: Ruby
+  extensions:
+  - .cr
+  ace_mode: ruby
 
 Cucumber:
   lexer: Gherkin
-  primary_extension: .feature
+  extensions:
+  - .feature
 
 Cuda:
+  type: programming
   lexer: CUDA
-  primary_extension: .cu
   extensions:
+  - .cu
   - .cuh
 
 Cython:
   type: programming
   group: Python
-  primary_extension: .pyx
   extensions:
+  - .pyx
   - .pxd
   - .pxi
 
 D:
   type: programming
   color: "#fcd46d"
-  primary_extension: .d
   extensions:
+  - .d
   - .di
 
 D-ObjDump:
   type: data
   lexer: d-objdump
-  primary_extension: .d-objdump
+  extensions:
+  - .d-objdump
 
 DM:
   type: programming
   color: "#075ff1"
   lexer: C++
-  primary_extension: .dm
+  extensions:
+  - .dm
   aliases:
   - byond
 
 DOT:
-  type: programming
+  type: data
   lexer: Text only
-  primary_extension: .dot
   extensions:
+  - .dot
   - .gv
 
 Darcs Patch:
   search_term: dpatch
   aliases:
   - dpatch
-  primary_extension: .darcspatch
   extensions:
+  - .darcspatch
   - .dpatch
 
 Dart:
   type: programming
   color: "#98BAD6"
-  primary_extension: .dart
+  extensions:
+  - .dart
 
 DCPU-16 ASM:
   type: programming
   lexer: dasm16
-  primary_extension: .dasm16
   extensions:
+  - .dasm16
   - .dasm
   aliases:
   - dasm16
 
 Diff:
-  primary_extension: .diff
+  extensions:
+  - .diff
+
+Dogescript:
+  type: programming
+  lexer: Text only
+  color: "#cca760"
+  extensions:
+  - .djs
 
 Dylan:
   type: programming
   color: "#3ebc27"
-  primary_extension: .dylan
+  extensions:
+  - .dylan
+  - .intr
+  - .lid
+
+E:
+  type: programming
+  color: "#ccce35"
+  lexer: Text only
+  extensions:
+  - .E
 
 Ecere Projects:
   type: data
   group: JavaScript
   lexer: JSON
-  primary_extension: .epj
+  extensions:
+  - .epj
 
 ECL:
   type: programming
   color: "#8a1267"
-  primary_extension: .ecl
   lexer: ECL
   extensions:
+  - .ecl
   - .eclxml
 
+Eagle:
+  type: markup
+  color: "#3994bc"
+  lexer: XML
+  extensions:
+  - .sch
+  - .brd
+
 Eiffel:
   type: programming
   lexer: Text only
   color: "#946d57"
-  primary_extension: .e
+  extensions:
+  - .e
 
 Elixir:
   type: programming
   color: "#6e4a7e"
-  primary_extension: .ex
   extensions:
+  - .ex
   - .exs
 
 Elm:
   type: programming
   lexer: Haskell
-  primary_extension: .elm
+  extensions:
+  - .elm
 
 Emacs Lisp:
   type: programming
@@ -494,17 +614,17 @@ Emacs Lisp:
   aliases:
   - elisp
   - emacs
-  primary_extension: .el
   filenames:
   - .emacs
   extensions:
+  - .el
   - .emacs
 
 Erlang:
   type: programming
   color: "#0faf8d"
-  primary_extension: .erl
   extensions:
+  - .erl
   - .hrl
 
 F#:
@@ -514,17 +634,25 @@ F#:
   search_term: fsharp
   aliases:
   - fsharp
-  primary_extension: .fs
   extensions:
+  - .fs
   - .fsi
   - .fsx
 
+FLUX:
+  type: programming
+  color: "#33CCFF"
+  lexer: Text only
+  extensions:
+  - .fx
+  - .flux
+
 FORTRAN:
   type: programming
   lexer: Fortran
   color: "#4d41b1"
-  primary_extension: .f90
   extensions:
+  - .f90
   - .F
   - .F03
   - .F08
@@ -544,7 +672,8 @@ FORTRAN:
 Factor:
   type: programming
   color: "#636746"
-  primary_extension: .factor
+  extensions:
+  - .factor
   filenames:
     - .factor-rc
     - .factor-boot-rc
@@ -552,8 +681,8 @@ Factor:
 Fancy:
   type: programming
   color: "#7b9db4"
-  primary_extension: .fy
   extensions:
+  - .fy
   - .fancypack
   filenames:
   - Fakefile
@@ -561,76 +690,137 @@ Fancy:
 Fantom:
   type: programming
   color: "#dbded5"
-  primary_extension: .fan
+  extensions:
+  - .fan
 
 Forth:
   type: programming
-  primary_extension: .fth
   color: "#341708"
   lexer: Text only
   extensions:
+  - .fth
   - .4th
 
+Frege:
+  type: programming
+  color: "#00cafe"
+  lexer: Haskell
+  extensions:
+  - .fr
+
+Game Maker Language:
+  type: programming
+  color: "#8ad353"
+  lexer: JavaScript
+  extensions:
+  - .gml
+
+GAMS:
+  type: programming
+  lexer: Text only
+  extensions:
+  - .gms
+
+GAP:
+  type: programming
+  lexer: Text only
+  extensions:
+  - .g
+  - .gap
+  - .gd
+  - .gi
+
 GAS:
   type: programming
   group: Assembly
-  primary_extension: .s
   extensions:
+  - .s
   - .S
 
 GLSL:
   group: C
   type: programming
-  primary_extension: .glsl
   extensions:
+  - .glsl
   - .fp
   - .frag
+  - .fshader
   - .geom
   - .glslv
+  - .gshader
   - .shader
   - .vert
+  - .vshader
 
 Genshi:
-  primary_extension: .kid
+  extensions:
+  - .kid
 
 Gentoo Ebuild:
   group: Shell
   lexer: Bash
-  primary_extension: .ebuild
+  extensions:
+  - .ebuild
 
 Gentoo Eclass:
   group: Shell
   lexer: Bash
-  primary_extension: .eclass
+  extensions:
+  - .eclass
 
 Gettext Catalog:
   search_term: pot
   searchable: false
   aliases:
   - pot
-  primary_extension: .po
   extensions:
+  - .po
   - .pot
 
 Glyph:
   type: programming
   color: "#e4cc98"
   lexer: Tcl
-  primary_extension: .glf
+  extensions:
+  - .glf
+
+Gnuplot:
+  type: programming
+  color: "#f0a9f0"
+  lexer: Gnuplot
+  extensions:
+  - .gp
+  - .gnu
+  - .gnuplot
+  - .plot
+  - .plt
 
 Go:
   type: programming
-  color: "#a89b4d"
-  primary_extension: .go
+  color: "#375eab"
+  extensions:
+  - .go
 
 Gosu:
   type: programming
   color: "#82937f"
-  primary_extension: .gs
+  extensions:
+  - .gs
+
+Grammatical Framework:
+  type: programming
+  lexer: Haskell
+  aliases:
+  - gf
+  wrap: false
+  extensions:
+  - .gf
+  searchable: true
+  color: "#ff0000"
 
 Groff:
-  primary_extension: .man
   extensions:
+  - .man
   - '.1'
   - '.2'
   - '.3'
@@ -643,33 +833,41 @@ Groovy:
   type: programming
   ace_mode: groovy
   color: "#e69f56"
-  primary_extension: .groovy
+  extensions:
+  - .groovy
+  - .grt
+  - .gtpl
+  - .gvy
+  interpreters:
+  - groovy
 
 Groovy Server Pages:
   group: Groovy
   lexer: Java Server Page
   aliases:
   - gsp
-  primary_extension: .gsp
+  extensions:
+  - .gsp
 
 HTML:
   type: markup
   ace_mode: html
   aliases:
   - xhtml
-  primary_extension: .html
   extensions:
+  - .html
   - .htm
+  - .html.hl
+  - .st
   - .xhtml
 
 HTML+Django:
   type: markup
   group: HTML
   lexer: HTML+Django/Jinja
-  primary_extension: .mustache # TODO: This is incorrect
   extensions:
-  - .jinja
   - .mustache
+  - .jinja
 
 HTML+ERB:
   type: markup
@@ -677,8 +875,8 @@ HTML+ERB:
   lexer: RHTML
   aliases:
   - erb
-  primary_extension: .erb
   extensions:
+  - .erb
   - .erb.deface
   - .html.erb
   - .html.erb.deface
@@ -686,61 +884,98 @@ HTML+ERB:
 HTML+PHP:
   type: markup
   group: HTML
-  primary_extension: .phtml
+  extensions:
+  - .phtml
 
 HTTP:
   type: data
-  primary_extension: .http
+  extensions:
+  - .http
 
 Haml:
   group: HTML
   type: markup
-  primary_extension: .haml
   extensions:
+  - .haml
   - .haml.deface
   - .html.haml.deface
 
 Handlebars:
   type: markup
   lexer: Text only
-  primary_extension: .handlebars
   extensions:
+  - .handlebars
   - .hbs
   - .html.handlebars
   - .html.hbs
 
+Harbour:
+  type: programming
+  lexer: Text only
+  color: "#0e60e3"
+  extensions:
+  - .hb
+
 Haskell:
   type: programming
   color: "#29b544"
-  primary_extension: .hs
   extensions:
+  - .hs
   - .hsc
 
 Haxe:
   type: programming
   ace_mode: haxe
-  color: "#346d51"
-  primary_extension: .hx
+  color: "#f7941e"
   extensions:
+  - .hx
   - .hxsl
 
+Hy:
+  type: programming
+  lexer: Clojure
+  ace_mode: clojure
+  color: "#7891b1"
+  extensions:
+  - .hy
+
+IDL:
+  type: programming
+  lexer: Text only
+  color: "#e3592c"
+  extensions:
+  - .pro
+
 INI:
   type: data
   extensions:
   - .ini
   - .prefs
   - .properties
-  primary_extension: .ini
+
+Inno Setup:
+  extensions:
+  - .iss
+  lexer: Text only
 
 Idris:
   type: programming
   lexer: Text only
-  primary_extension: .idr
   extensions:
+  - .idr
   - .lidr
 
+Inform 7:
+  type: programming
+  lexer: Text only
+  wrap: true
+  extensions:
+  - .ni
+  - .i7x
+
 Inno Setup:
-  primary_extension: .iss
+  extensions:
+  - .iss
   lexer: Text only
 
 IRC log:
@@ -748,52 +983,86 @@ IRC log:
   search_term: irc
   aliases:
   - irc
-  primary_extension: .irclog
   extensions:
+  - .irclog
   - .weechatlog
 
 Io:
   type: programming
   color: "#a9188d"
-  primary_extension: .io
+  extensions:
+  - .io
 
 Ioke:
   type: programming
   color: "#078193"
-  primary_extension: .ik
+  extensions:
+  - .ik
+
+Isabelle:
+  type: programming
+  lexer: Text only
+  color: "#fdcd00"
+  extensions:
+  - .thy
 
 J:
   type: programming
   lexer: Text only
-  primary_extension: .ijs
+  extensions:
+  - .ijs
 
 JSON:
   type: data
   group: JavaScript
   ace_mode: json
   searchable: false
-  primary_extension: .json
   extensions:
+  - .json
   - .sublime-keymap
-  - .sublime_metrics
   - .sublime-mousemap
   - .sublime-project
-  - .sublime_session
   - .sublime-settings
   - .sublime-workspace
+  - .sublime_metrics
+  - .sublime_session
   filenames:
+  - .jshintrc
   - composer.lock
 
+JSON5:
+  type: data
+  lexer: JavaScript
+  extensions:
+  - .json5
+
+JSONLD:
+  type: data
+  group: JavaScript
+  ace_mode: json
+  lexer: JavaScript
+  extensions:
+  - .jsonld
+
+JSONiq:
+  type: programming
+  ace_mode: jsoniq
+  lexer: XQuery
+  extensions:
+  - .jq
+
 Jade:
   group: HTML
   type: markup
-  primary_extension: .jade
+  extensions:
+  - .jade
 
 Java:
   type: programming
   ace_mode: java
   color: "#b07219"
-  primary_extension: .java
+  extensions:
+  - .java
 
 Java Server Pages:
   group: Java
@@ -801,82 +1070,114 @@ Java Server Pages:
   search_term: jsp
   aliases:
   - jsp
-  primary_extension: .jsp
+  extensions:
+  - .jsp
 
 JavaScript:
   type: programming
   ace_mode: javascript
-  color: "#f15501"
+  color: "#f1e05a"
   aliases:
   - js
   - node
-  primary_extension: .js
   extensions:
+  - .js
   - ._js
   - .bones
+  - .es6
+  - .frag
   - .jake
   - .jsfl
   - .jsm
   - .jss
   - .jsx
+  - .njs
   - .pac
   - .sjs
   - .ssjs
   filenames:
   - Jakefile
+  interpreters:
+  - node
 
 Julia:
   type: programming
-  primary_extension: .jl
+  extensions:
+  - .jl
   color: "#a270ba"
 
 KRL:
   lexer: Text only
   type: programming
   color: "#f5c800"
-  primary_extension: .krl
+  extensions:
+  - .krl
+
+Kit:
+  type: markup
+  lexer: HTML
+  ace_mode: html
+  extensions:
+  - .kit
 
 Kotlin:
   type: programming
-  primary_extension: .kt
   extensions:
+  - .kt
   - .ktm
   - .kts
 
 LFE:
   type: programming
-  primary_extension: .lfe
+  extensions:
+  - .lfe
   color: "#004200"
   lexer: Common Lisp
   group: Erlang
 
 LLVM:
-  primary_extension: .ll
+  extensions:
+  - .ll
 
 Lasso:
   type: programming
   lexer: Lasso
   color: "#2584c3"
-  primary_extension: .lasso
+  extensions:
+  - .lasso
+
+Latte:
+  type: markup
+  color: "#A8FF97"
+  group: HTML
+  lexer: Smarty
+  extensions:
+  - .latte
 
 Less:
   type: markup
   group: CSS
   lexer: CSS
-  primary_extension: .less
+  extensions:
+  - .less
 
 LilyPond:
   lexer: Text only
-  primary_extension: .ly
   extensions:
+  - .ly
   - .ily
 
+Liquid:
+  type: markup
+  lexer: Text only
+  extensions:
+  - .liquid
+
 Literate Agda:
   type: programming
   group: Agda
-  primary_extension: .lagda
   extensions:
-    - .lagda
+  - .lagda
 
 Literate CoffeeScript:
   type: programming
@@ -887,7 +1188,8 @@ Literate CoffeeScript:
   search_term: litcoffee
   aliases:
   - litcoffee
-  primary_extension: .litcoffee
+  extensions:
+  - .litcoffee
 
 Literate Haskell:
   type: programming
@@ -895,7 +1197,8 @@ Literate Haskell:
   search_term: lhs
   aliases:
   - lhs
-  primary_extension: .lhs
+  extensions:
+  - .lhs
 
 LiveScript:
   type: programming
@@ -903,51 +1206,56 @@ LiveScript:
   color: "#499886"
   aliases:
   - ls
-  primary_extension: .ls
   extensions:
+  - .ls
   - ._ls
   filenames:
   - Slakefile
 
 Logos:
   type: programming
-  primary_extension: .xm
   extensions:
-  - .x
-  - .xi
-  - .xmi
+  - .xm
 
 Logtalk:
   type: programming
-  primary_extension: .lgt
   extensions:
+  - .lgt
   - .logtalk
 
 Lua:
   type: programming
   ace_mode: lua
   color: "#fa1fa1"
-  primary_extension: .lua
   extensions:
+  - .lua
   - .nse
   - .rbxs
+  interpreters:
+  - lua
 
 M:
   type: programming
   lexer: Common Lisp
   aliases:
   - mumps
-  primary_extension: .mumps
   extensions:
+  - .mumps
   - .m
 
+MTML:
+  type: markup
+  lexer: HTML
+  color: "#0095d9"
+  extensions:
+  - .mtml
+
 Makefile:
   aliases:
   - make
   extensions:
   - .mak
   - .mk
-  primary_extension: .mak
   filenames:
   - makefile
   - Makefile
@@ -956,8 +1264,8 @@ Makefile:
   - make
 
 Mako:
-  primary_extension: .mako
   extensions:
+  - .mako
   - .mao
 
 Markdown:
@@ -965,17 +1273,36 @@ Markdown:
   lexer: Text only
   ace_mode: markdown
   wrap: true
-  primary_extension: .md
   extensions:
+  - .md
   - .markdown
   - .mkd
+  - .mkdn
   - .mkdown
   - .ron
 
+Mask:
+  type: markup
+  lexer: SCSS
+  color: "#f97732"
+  ace_mode: scss
+  extensions:
+  - .mask
+
+Mathematica:
+  type: programming
+  extensions:
+  - .mathematica
+  - .m
+  - .nb
+  lexer: Text only
+
 Matlab:
   type: programming
   color: "#bb92ac"
-  primary_extension: .matlab
+  extensions:
+  - .matlab
+  - .m
 
 Max:
   type: programming
@@ -985,8 +1312,8 @@ Max:
   - max/msp
   - maxmsp
   search_term: max/msp
-  primary_extension: .maxpat
   extensions:
+  - .maxpat
   - .maxhelp
   - .maxproj
   - .mxt
@@ -996,19 +1323,30 @@ MediaWiki:
   type: prose
   lexer: Text only
   wrap: true
-  primary_extension: .mediawiki
+  extensions:
+  - .mediawiki
+
+Mercury:
+  type: programming
+  color: "#abcdef"
+  lexer: Prolog
+  ace_mode: prolog
+  extensions:
+  - .m
+  - .moo
 
 MiniD: # Legacy
   searchable: false
-  primary_extension: .minid # Dummy extension
+  extensions:
+  - .minid # Dummy extension
 
 Mirah:
   type: programming
   lexer: Ruby
   search_term: ruby
   color: "#c7a938"
-  primary_extension: .druby
   extensions:
+  - .druby
   - .duby
   - .mir
   - .mirah
@@ -1016,59 +1354,75 @@ Mirah:
 Monkey:
   type: programming
   lexer: Monkey
-  primary_extension: .monkey
+  extensions:
+  - .monkey
 
 Moocode:
+  type: programming
   lexer: MOOCode
-  primary_extension: .moo
+  extensions:
+  - .moo
 
 MoonScript:
   type: programming
-  primary_extension: .moon
+  extensions:
+  - .moon
 
 Myghty:
-  primary_extension: .myt
+  extensions:
+  - .myt
 
 NSIS:
-  primary_extension: .nsi
+  extensions:
+  - .nsi
 
 Nemerle:
   type: programming
   color: "#0d3c6e"
-  primary_extension: .n
+  extensions:
+  - .n
 
 NetLogo:
   type: programming
   lexer: Common Lisp
   color: "#ff2b2b"
-  primary_extension: .nlogo
+  extensions:
+  - .nlogo
 
 Nginx:
   type: markup
   lexer: Nginx configuration file
-  primary_extension: .nginxconf
+  extensions:
+  - .nginxconf
 
 Nimrod:
   type: programming
   color: "#37775b"
-  primary_extension: .nim
   extensions:
+  - .nim
   - .nimrod
 
+Nix:
+  type: programming
+  lexer: Nix
+  extensions:
+  - .nix
+
 Nu:
   type: programming
   lexer: Scheme
   color: "#c9df40"
   aliases:
   - nush
-  primary_extension: .nu
+  extensions:
+  - .nu
   filenames:
   - Nukefile
 
 NumPy:
   group: Python
-  primary_extension: .numpy
   extensions:
+  - .numpy
   - .numpyw
   - .numsc
 
@@ -1076,9 +1430,10 @@ OCaml:
   type: programming
   ace_mode: ocaml
   color: "#3be133"
-  primary_extension: .ml
   extensions:
+  - .ml
   - .eliomi
+  - .ml4
   - .mli
   - .mll
   - .mly
@@ -1086,7 +1441,8 @@ OCaml:
 ObjDump:
   type: data
   lexer: objdump
-  primary_extension: .objdump
+  extensions:
+  - .objdump
 
 Objective-C:
   type: programming
@@ -1094,7 +1450,15 @@ Objective-C:
   aliases:
   - obj-c
   - objc
-  primary_extension: .m
+  extensions:
+  - .m
+
+Objective-C++:
+  type: programming
+  color: "#4886FC"
+  aliases:
+  - obj-c++
+  - objc++
   extensions:
   - .mm
 
@@ -1103,26 +1467,28 @@ Objective-J:
   color: "#ff0c5a"
   aliases:
   - obj-j
-  primary_extension: .j
   extensions:
+  - .j
   - .sj
 
 Omgrofl:
   type: programming
-  primary_extension: .omgrofl
+  extensions:
+  - .omgrofl
   color: "#cabbff"
   lexer: Text only
 
 Opa:
   type: programming
-  primary_extension: .opa
+  extensions:
+  - .opa
 
 OpenCL:
   type: programming
   group: C
   lexer: C
-  primary_extension: .cl
   extensions:
+  - .cl
   - .opencl
 
 OpenEdge ABL:
@@ -1131,26 +1497,44 @@ OpenEdge ABL:
   - progress
   - openedge
   - abl
-  primary_extension: .p
+  extensions:
+  - .p
 
 Org:
   type: prose
   lexer: Text only
   wrap: true
-  primary_extension: .org
+  extensions:
+  - .org
+
+Ox:
+  type: programming
+  lexer: Text only
+  extensions:
+  - .ox
+  - .oxh
+  - .oxo
 
 Oxygene:
   type: programming
   lexer: Text only
   color: "#5a63a3"
-  primary_extension: .oxygene
+  extensions:
+  - .oxygene
+
+PAWN:
+  type: programming
+  lexer: C++
+  color: "#dbb284"
+  extensions:
+  - .pwn
 
 PHP:
   type: programming
   ace_mode: php
-  color: "#6e03c1"
-  primary_extension: .php
+  color: "#4F5D95"
   extensions:
+  - .php
   - .aw
   - .ctp
   - .php3
@@ -1160,11 +1544,19 @@ PHP:
   filenames:
   - Phakefile
 
+Pan:
+  type: programming
+  lexer: Text only
+  color: '#cc0000'
+  extensions:
+  - .pan
+
 Parrot:
   type: programming
   color: "#f3ca0a"
   lexer: Text only
-  primary_extension: .parrot # Dummy extension
+  extensions:
+  - .parrot # Dummy extension
 
 Parrot Internal Representation:
   group: Parrot
@@ -1172,7 +1564,8 @@ Parrot Internal Representation:
   lexer: Text only
   aliases:
   - pir
-  primary_extension: .pir
+  extensions:
+  - .pir
 
 Parrot Assembly:
   group: Parrot
@@ -1180,14 +1573,15 @@ Parrot Assembly:
   lexer: Text only
   aliases:
   - pasm
-  primary_extension: .pasm
+  extensions:
+  - .pasm
 
 Pascal:
   type: programming
   lexer: Delphi
   color: "#b0ce4e"
-  primary_extension: .pas
   extensions:
+  - .pas
   - .dfm
   - .lpr
 
@@ -1195,40 +1589,67 @@ Perl:
   type: programming
   ace_mode: perl
   color: "#0298c3"
-  primary_extension: .pl
   extensions:
+  - .pl
   - .PL
-  - .nqp
   - .perl
   - .ph
   - .plx
-  - .pm6
+  - .pm
   - .pod
   - .psgi
   interpreters:
   - perl
 
+Perl6:
+  type: programming
+  color: "#0298c3"
+  extensions:
+  - .p6
+  - .6pl
+  - .6pm
+  - .nqp
+  - .p6l
+  - .p6m
+  - .pl6
+  - .pm6
+
 Pike:
   type: programming
   color: "#066ab2"
-  lexer: C
-  primary_extension: .pike
+  lexer: Pike
   extensions:
+  - .pike
   - .pmod
 
+Pod:
+  type: prose
+  lexer: Text only
+  ace_mode: perl
+  wrap: true
+  extensions:
+  - .pod
+
 PogoScript:
   type: programming
   color: "#d80074"
   lexer: Text only
-  primary_extension: .pogo
+  extensions:
+  - .pogo
+
+PostScript:
+  type: markup
+  extensions:
+  - .ps
+  - .eps
 
 PowerShell:
   type: programming
   ace_mode: powershell
   aliases:
   - posh
-  primary_extension: .ps1
   extensions:
+  - .ps1
   - .psd1
   - .psm1
 
@@ -1236,26 +1657,35 @@ Processing:
   type: programming
   lexer: Java
   color: "#2779ab"
-  primary_extension: .pde
+  extensions:
+  - .pde
 
 Prolog:
   type: programming
   color: "#74283c"
-  primary_extension: .prolog
   extensions:
-  - .pro
+  - .prolog
+  - .ecl
+  - .pl
+
+Propeller Spin:
+  type: programming
+  lexer: Text only
+  color: "#2b446d"
+  extensions:
+  - .spin
 
 Protocol Buffer:
   type: markup
   aliases:
   - protobuf
   - Protocol Buffers
-  primary_extension: .proto
+  extensions:
+  - .proto
 
 Puppet:
   type: programming
   color: "#cc5555"
-  primary_extension: .pp
   extensions:
   - .pp
   filenames:
@@ -1265,22 +1695,34 @@ Pure Data:
   type: programming
   color: "#91de79"
   lexer: Text only
-  primary_extension: .pd
+  extensions:
+  - .pd
+
+PureScript:
+  type: programming
+  color: "#bcdc53"
+  lexer: Haskell
+  extensions:
+  - .purs
 
 Python:
   type: programming
   ace_mode: python
   color: "#3581ba"
-  primary_extension: .py
   extensions:
+  - .py
   - .gyp
   - .lmi
+  - .pyde
+  - .pyp
   - .pyt
   - .pyw
   - .wsgi
   - .xpy
   filenames:
   - wscript
+  - SConstruct
+  - SConscript
   interpreters:
   - python
 
@@ -1289,26 +1731,34 @@ Python traceback:
   group: Python
   lexer: Python Traceback
   searchable: false
-  primary_extension: .pytb
+  extensions:
+  - .pytb
 
 QML:
   type: markup
   color: "#44a51c"
-  primary_extension: .qml
+  extensions:
+  - .qml
 
 QMake:
-  primary_extension: .pro
   lexer: Text only
   extensions:
+  - .pro
   - .pri
 
 R:
   type: programming
   color: "#198ce7"
   lexer: S
-  primary_extension: .r
+  aliases:
+  - R
+  - Rscript
   extensions:
+  - .r
   - .R
+  - .Rd
+  - .rd
+  - .rsx
   filenames:
   - .Rprofile
   interpreters:
@@ -1319,13 +1769,14 @@ RDoc:
   lexer: Text only
   ace_mode: rdoc
   wrap: true
-  primary_extension: .rdoc
+  extensions:
+  - .rdoc
 
 REALbasic:
   type: programming
   lexer: VB.net
-  primary_extension: .rbbas
   extensions:
+  - .rbbas
   - .rbfrm
   - .rbmnu
   - .rbres
@@ -1335,14 +1786,24 @@ REALbasic:
 RHTML:
   type: markup
   group: HTML
-  primary_extension: .rhtml
+  extensions:
+  - .rhtml
+
+RMarkdown:
+  type: prose
+  lexer: Text only
+  wrap: true
+  ace_mode: markdown
+  extensions:
+  - .rmd
+  - .Rmd
 
 Racket:
   type: programming
   lexer: Racket
   color: "#ae17ff"
-  primary_extension: .rkt
   extensions:
+  - .rkt
   - .rktd
   - .rktl
 
@@ -1350,30 +1811,43 @@ Ragel in Ruby Host:
   type: programming
   lexer: Ragel in Ruby Host
   color: "#ff9c2e"
-  primary_extension: .rl
+  extensions:
+  - .rl
 
 Raw token data:
   search_term: raw
   aliases:
   - raw
-  primary_extension: .raw
+  extensions:
+  - .raw
 
 Rebol:
   type: programming
   lexer: REBOL
   color: "#358a5b"
-  primary_extension: .rebol
   extensions:
+  - .reb
+  - .r
   - .r2
   - .r3
+  - .rebol
+
+Red:
+  type: programming
+  lexer: Text only
+  color: "#ee0000"
+  extensions:
+  - .red
+  - .reds
 
 Redcode:
-  primary_extension: .cw
+  extensions:
+  - .cw
 
 RobotFramework:
   type: programming
-  primary_extension: .robot
-  # extensions:
+  extensions:
+  - .robot
   # - .txt
 
 Rouge:
@@ -1381,7 +1855,8 @@ Rouge:
   lexer: Clojure
   ace_mode: clojure
   color: "#cc0088"
-  primary_extension: .rg
+  extensions:
+  - .rg
 
 Ruby:
   type: programming
@@ -1393,8 +1868,8 @@ Ruby:
   - rake
   - rb
   - rbx
-  primary_extension: .rb
   extensions:
+  - .rb
   - .builder
   - .gemspec
   - .god
@@ -1412,56 +1887,85 @@ Ruby:
   filenames:
   - Appraisals
   - Berksfile
+  - Buildfile
   - Gemfile
+  - Gemfile.lock
   - Guardfile
   - Podfile
   - Thorfile
   - Vagrantfile
+  - buildfile
 
 Rust:
   type: programming
   color: "#dea584"
-  primary_extension: .rs
+  extensions:
+  - .rs
+
+SAS:
+  type: programming
+  color: "#1E90FF"
+  lexer: Text only
+  extensions:
+  - .sas
 
 SCSS:
   type: markup
   group: CSS
   ace_mode: scss
-  primary_extension: .scss
+  extensions:
+  - .scss
 
 SQL:
   type: data
   ace_mode: sql
-  searchable: false
-  primary_extension: .sql
+  extensions:
+  - .sql
+  - .prc
+  - .tab
+  - .udf
+  - .viw
+
+STON:
+  type: data
+  group: Smalltalk
+  lexer: JSON
+  extensions:
+  - .ston
 
 Sage:
   type: programming
   lexer: Python
   group: Python
-  primary_extension: .sage
+  extensions:
+  - .sage
 
 Sass:
   type: markup
   group: CSS
-  primary_extension: .sass
+  extensions:
+  - .sass
 
 Scala:
   type: programming
   ace_mode: scala
   color: "#7dd3b0"
-  primary_extension: .scala
+  extensions:
+  - .scala
+  - .sc
 
 Scaml:
   group: HTML
   type: markup
-  primary_extension: .scaml
+  extensions:
+  - .scaml
 
 Scheme:
   type: programming
   color: "#1e4aec"
-  primary_extension: .scm
   extensions:
+  - .scm
+  - .sld
   - .sls
   - .ss
   interpreters:
@@ -1472,13 +1976,15 @@ Scheme:
 
 Scilab:
   type: programming
-  primary_extension: .sci
+  extensions:
+  - .sci
 
 Self:
   type: programming
   color: "#0579aa"
   lexer: Text only
-  primary_extension: .self
+  extensions:
+  - .self
 
 Shell:
   type: programming
@@ -1489,8 +1995,8 @@ Shell:
   - sh
   - bash
   - zsh
-  primary_extension: .sh
   extensions:
+  - .sh
   - .bats
   - .tmux
   interpreters:
@@ -1500,70 +2006,147 @@ Shell:
   filenames:
   - Dockerfile
 
+ShellSession:
+  type: programming
+  lexer: Bash Session
+  extensions:
+  - .sh-session
+
+Shen:
+  type: programming
+  color: "#120F14"
+  lexer: Text only
+  extensions:
+  - .shen
+
 Slash:
   type: programming
   color: "#007eff"
-  primary_extension: .sl
+  extensions:
+  - .sl
+
+Slim:
+  group: HTML
+  type: markup
+  lexer: Slim
+  color: "#ff8877"
+  extensions:
+  - .slim
 
 Smalltalk:
   type: programming
   color: "#596706"
-  primary_extension: .st
+  extensions:
+  - .st
 
 Smarty:
-  primary_extension: .tpl
+  extensions:
+  - .tpl
+
+SourcePawn:
+  type: programming
+  color: "#f69e1d"
+  aliases:
+  - sourcemod
+  extensions:
+  - .sp
 
 Squirrel:
   type: programming
   lexer: C++
-  primary_extension: .nut
+  extensions:
+  - .nut
 
 Standard ML:
   type: programming
   color: "#dc566d"
   aliases:
   - sml
-  primary_extension: .sml
+  extensions:
+  - .ML
+  - .fun
+  - .sml
+
+Stata:
+  type: programming
+  lexer: Text only
+  extensions:
+  - .do
+  - .ado
+  - .doh
+  - .ihlp
+  - .mata
+  - .matah
+  - .sthlp
+
+Stylus:
+  type: markup
+  group: CSS
+  lexer: Text only
+  extensions:
+  - .styl
 
 SuperCollider:
   type: programming
   color: "#46390b"
   lexer: Text only
-  primary_extension: .sc
+  extensions:
+  - .scd
+
+Swift:
+  type: programming
+  lexer: Swift
+  color: "#ffac45"
+  extensions:
+  - .swift
+
+SystemVerilog:
+  type: programming
+  color: "#343761"
+  lexer: systemverilog
+  extensions:
+  - .sv
+  - .svh
+  - .vh
 
 TOML:
   type: data
-  primary_extension: .toml
+  extensions:
+  - .toml
 
 TXL:
   type: programming
   lexer: Text only
-  primary_extension: .txl
+  extensions:
+  - .txl
 
 Tcl:
   type: programming
   color: "#e4cc98"
-  primary_extension: .tcl
   extensions:
+  - .tcl
   - .adp
+  - .tm
 
 Tcsh:
   type: programming
   group: Shell
-  primary_extension: .tcsh
   extensions:
+  - .tcsh
   - .csh
 
 TeX:
   type: markup
   color: "#3D6117"
   ace_mode: latex
+  wrap: true
   aliases:
   - latex
-  primary_extension: .tex
   extensions:
+  - .tex
   - .aux
   - .bib
+  - .cls
   - .dtx
   - .ins
   - .ltx
@@ -1575,35 +2158,39 @@ TeX:
 
 Tea:
   type: markup
-  primary_extension: .tea
+  extensions:
+  - .tea
 
 Textile:
   type: prose
   lexer: Text only
   ace_mode: textile
   wrap: true
-  primary_extension: .textile
+  extensions:
+  - .textile
 
 Turing:
   type: programming
   color: "#45f715"
   lexer: Text only
-  primary_extension: .t
   extensions:
+  - .t
   - .tu
 
 Twig:
   type: markup
   group: PHP
   lexer: HTML+Django/Jinja
-  primary_extension: .twig
+  extensions:
+  - .twig
 
 TypeScript:
   type: programming
   color: "#31859c"
   aliases:
   - ts
-  primary_extension: .ts
+  extensions:
+  - .ts
 
 Unified Parallel C:
   type: programming
@@ -1611,20 +2198,30 @@ Unified Parallel C:
   lexer: C
   ace_mode: c_cpp
   color: "#755223"
-  primary_extension: .upc
+  extensions:
+  - .upc
 
 UnrealScript:
   type: programming
   color: "#a54c4d"
   lexer: Java
-  primary_extension: .uc
+  extensions:
+  - .uc
+
+VCL:
+  type: programming
+  lexer: Perl
+  ace_mode: perl
+  color: "#0298c3"
+  extensions:
+  - .vcl
 
 VHDL:
   type: programming
   lexer: vhdl
   color: "#543978"
-  primary_extension: .vhdl
   extensions:
+  - .vhdl
   - .vhd
   - .vhf
   - .vhi
@@ -1636,16 +2233,16 @@ VHDL:
 Vala:
   type: programming
   color: "#ee7d06"
-  primary_extension: .vala
   extensions:
+  - .vala
   - .vapi
 
 Verilog:
   type: programming
   lexer: verilog
   color: "#848bf3"
-  primary_extension: .v
   extensions:
+  - .v
   - .veo
 
 VimL:
@@ -1654,7 +2251,8 @@ VimL:
   search_term: vim
   aliases:
   - vim
-  primary_extension: .vim
+  extensions:
+  - .vim
   filenames:
   - .vimrc
   - vimrc
@@ -1664,24 +2262,27 @@ Visual Basic:
   type: programming
   lexer: VB.net
   color: "#945db7"
-  primary_extension: .vb
   extensions:
+  - .vb
   - .bas
   - .frm
   - .frx
   - .vba
+  - .vbhtml
   - .vbs
 
 Volt:
     type: programming
     lexer: D
     color: "#0098db"
-    primary_extension: .volt
+    extensions:
+    - .volt
 
 XC:
   type: programming
   lexer: C
-  primary_extension: .xc
+  extensions:
+  - .xc
 
 XML:
   type: markup
@@ -1690,21 +2291,28 @@ XML:
   - rss
   - xsd
   - wsdl
-  primary_extension: .xml
   extensions:
+  - .xml
   - .axml
   - .ccxml
   - .clixml
   - .cproject
+  - .csproj
+  - .ct
   - .dita
   - .ditamap
   - .ditaval
+  - .filters
+  - .fsproj
   - .glade
   - .grxml
   - .jelly
   - .kml
   - .launch
   - .mxml
+  - .nproj
+  - .nuspec
+  - .osm
   - .plist
   - .pluginspec
   - .ps1xml
@@ -1715,6 +2323,7 @@ XML:
   - .scxml
   - .srdf
   - .svg
+  - .targets
   - .tmCommand
   - .tmLanguage
   - .tmPreferences
@@ -1723,6 +2332,8 @@ XML:
   - .tml
   - .ui
   - .urdf
+  - .vbproj
+  - .vcxproj
   - .vxml
   - .wsdl
   - .wxi
@@ -1745,15 +2356,15 @@ XML:
 XProc:
   type: programming
   lexer: XML
-  primary_extension: .xpl
   extensions:
+  - .xpl
   - .xproc
 
 XQuery:
   type: programming
   color: "#2700e2"
-  primary_extension: .xquery
   extensions:
+  - .xquery
   - .xq
   - .xql
   - .xqm
@@ -1761,35 +2372,63 @@ XQuery:
 
 XS:
   lexer: C
-  primary_extension: .xs
+  extensions:
+  - .xs
 
 XSLT:
   type: programming
   aliases:
   - xsl
-  primary_extension: .xslt
   extensions:
-    - .xsl
+  - .xslt
+  - .xsl
+
+Xojo:
+  type: programming
+  lexer: VB.net
+  extensions:
+  - .xojo_code
+  - .xojo_menu
+  - .xojo_report
+  - .xojo_script
+  - .xojo_toolbar
+  - .xojo_window
 
 Xtend:
   type: programming
-  primary_extension: .xtend
+  extensions:
+  - .xtend
 
 YAML:
   type: data
   aliases:
   - yml
-  primary_extension: .yml
   extensions:
+  - .yml
   - .reek
   - .rviz
   - .yaml
 
+Zephir:
+  type: programming
+  lexer: PHP
+  color: "#118f9e"
+  extensions:
+  - .zep
+
+Zimpl:
+  type: programming
+  lexer: Text only
+  extensions:
+  - .zimpl
+  - .zmpl
+  - .zpl
+
 eC:
   type: programming
   search_term: ec
-  primary_extension: .ec
   extensions:
+  - .ec
   - .eh
 
 edn:
@@ -1797,28 +2436,34 @@ edn:
   lexer: Clojure
   ace_mode: clojure
   color: "#db5855"
-  primary_extension: .edn
+  extensions:
+  - .edn
 
 fish:
   type: programming
   group: Shell
   lexer: Text only
-  primary_extension: .fish
+  extensions:
+  - .fish
 
 mupad:
   lexer: MuPAD
-  primary_extension: .mu
+  extensions:
+  - .mu
 
 nesC:
   type: programming
   color: "#ffce3b"
-  primary_extension: .nc
+  lexer: nesC
+  extensions:
+  - .nc
 
 ooc:
   type: programming
   lexer: Ooc
   color: "#b0b77e"
-  primary_extension: .ooc
+  extensions:
+  - .ooc
 
 reStructuredText:
   type: prose
@@ -1826,8 +2471,8 @@ reStructuredText:
   search_term: rst
   aliases:
   - rst
-  primary_extension: .rst
   extensions:
+  - .rst
   - .rest
 
 wisp:
@@ -1835,10 +2480,12 @@ wisp:
   lexer: Clojure
   ace_mode: clojure
   color: "#7582D1"
-  primary_extension: .wisp
+  extensions:
+  - .wisp
 
 xBase:
   type: programming
   lexer: Text only
   color: "#3a4040"
-  primary_extension: .prg
+  extensions:
+  - .prg
diff --git a/lib/linguist/repository.rb b/lib/linguist/repository.rb
index 4b34be0a..a62bf281 100644
--- a/lib/linguist/repository.rb
+++ b/lib/linguist/repository.rb
@@ -29,6 +29,7 @@ module Linguist
       @computed_stats = false
       @language = @size = nil
       @sizes = Hash.new { 0 }
+      @file_breakdown = Hash.new { |h,k| h[k] = Array.new }
     end
 
     # Public: Returns a breakdown of language stats.
@@ -60,6 +61,12 @@ module Linguist
       @size
     end
 
+    # Public: Return the language breakdown of this repository by file
+    def breakdown_by_file
+      compute_stats
+      @file_breakdown
+    end
+
     # Internal: Compute language breakdown for each blob in the Repository.
     #
     # Returns nothing
@@ -75,6 +82,10 @@ module Linguist
 
         # Only include programming languages and acceptable markup languages
         if blob.language.type == :programming || Language.detectable_markup.include?(blob.language.name)
+
+          # Build up the per-file breakdown stats
+          @file_breakdown[blob.language.group.name] << blob.name
+
           @sizes[blob.language.group] += blob.size
         end
       end
diff --git a/lib/linguist/samples.json b/lib/linguist/samples.json
index 04af4454..ca418f61 100644
--- a/lib/linguist/samples.json
+++ b/lib/linguist/samples.json
@@ -6,6 +6,9 @@
     "Agda": [
       ".agda"
     ],
+    "Alloy": [
+      ".als"
+    ],
     "Apex": [
       ".cls"
     ],
@@ -20,6 +23,19 @@
       ".asc",
       ".asciidoc"
     ],
+    "AspectJ": [
+      ".aj"
+    ],
+    "Assembly": [
+      ".asm",
+      ".inc"
+    ],
+    "ATS": [
+      ".atxt",
+      ".dats",
+      ".hats",
+      ".sats"
+    ],
     "AutoHotkey": [
       ".ahk"
     ],
@@ -37,11 +53,27 @@
     ],
     "C": [
       ".c",
+      ".cats",
       ".h"
     ],
+    "C#": [
+      ".cs",
+      ".cshtml"
+    ],
+    "C++": [
+      ".cc",
+      ".cpp",
+      ".h",
+      ".hpp",
+      ".inl",
+      ".ipp"
+    ],
     "Ceylon": [
       ".ceylon"
     ],
+    "Cirru": [
+      ".cirru"
+    ],
     "Clojure": [
       ".cl2",
       ".clj",
@@ -61,14 +93,22 @@
       ".coffee"
     ],
     "Common Lisp": [
+      ".cl",
       ".lisp"
     ],
+    "Component Pascal": [
+      ".cp",
+      ".cps"
+    ],
     "Coq": [
       ".v"
     ],
     "Creole": [
       ".creole"
     ],
+    "Crystal": [
+      ".cr"
+    ],
     "CSS": [
       ".css"
     ],
@@ -85,6 +125,16 @@
     "DM": [
       ".dm"
     ],
+    "Dogescript": [
+      ".djs"
+    ],
+    "E": [
+      ".E"
+    ],
+    "Eagle": [
+      ".brd",
+      ".sch"
+    ],
     "ECL": [
       ".ecl"
     ],
@@ -105,22 +155,50 @@
     "fish": [
       ".fish"
     ],
+    "Forth": [
+      ".forth",
+      ".fth"
+    ],
+    "Frege": [
+      ".fr"
+    ],
+    "Game Maker Language": [
+      ".gml"
+    ],
+    "GAMS": [
+      ".gms"
+    ],
+    "GAP": [
+      ".g",
+      ".gd",
+      ".gi"
+    ],
     "GAS": [
       ".s"
     ],
     "GLSL": [
       ".fp",
+      ".frag",
       ".glsl"
     ],
+    "Gnuplot": [
+      ".gnu",
+      ".gp"
+    ],
     "Gosu": [
       ".gs",
-      ".gsp",
       ".gst",
       ".gsx",
       ".vark"
     ],
+    "Grammatical Framework": [
+      ".gf"
+    ],
     "Groovy": [
       ".gradle",
+      ".grt",
+      ".gtpl",
+      ".gvy",
       ".script!"
     ],
     "Groovy Server Pages": [
@@ -133,12 +211,33 @@
       ".handlebars",
       ".hbs"
     ],
+    "Haskell": [
+      ".hs"
+    ],
+    "HTML": [
+      ".html",
+      ".st"
+    ],
+    "Hy": [
+      ".hy"
+    ],
+    "IDL": [
+      ".dlm",
+      ".pro"
+    ],
     "Idris": [
       ".idr"
     ],
+    "Inform 7": [
+      ".i7x",
+      ".ni"
+    ],
     "Ioke": [
       ".ik"
     ],
+    "Isabelle": [
+      ".thy"
+    ],
     "Jade": [
       ".jade"
     ],
@@ -146,6 +245,7 @@
       ".java"
     ],
     "JavaScript": [
+      ".frag",
       ".js",
       ".script!"
     ],
@@ -153,21 +253,45 @@
       ".json",
       ".lock"
     ],
+    "JSON5": [
+      ".json5"
+    ],
+    "JSONiq": [
+      ".jq"
+    ],
+    "JSONLD": [
+      ".jsonld"
+    ],
     "Julia": [
       ".jl"
     ],
+    "Kit": [
+      ".kit"
+    ],
     "Kotlin": [
       ".kt"
     ],
     "KRL": [
       ".krl"
     ],
+    "Lasso": [
+      ".las",
+      ".lasso",
+      ".lasso9",
+      ".ldml"
+    ],
+    "Latte": [
+      ".latte"
+    ],
     "Less": [
       ".less"
     ],
     "LFE": [
       ".lfe"
     ],
+    "Liquid": [
+      ".liquid"
+    ],
     "Literate Agda": [
       ".lagda"
     ],
@@ -195,6 +319,13 @@
     "Markdown": [
       ".md"
     ],
+    "Mask": [
+      ".mask"
+    ],
+    "Mathematica": [
+      ".m",
+      ".nb"
+    ],
     "Matlab": [
       ".m"
     ],
@@ -206,9 +337,22 @@
     "MediaWiki": [
       ".mediawiki"
     ],
+    "Mercury": [
+      ".m",
+      ".moo"
+    ],
     "Monkey": [
       ".monkey"
     ],
+    "Moocode": [
+      ".moo"
+    ],
+    "MoonScript": [
+      ".moon"
+    ],
+    "MTML": [
+      ".mtml"
+    ],
     "Nemerle": [
       ".n"
     ],
@@ -218,6 +362,9 @@
     "Nimrod": [
       ".nim"
     ],
+    "Nix": [
+      ".nix"
+    ],
     "NSIS": [
       ".nsh",
       ".nsi"
@@ -230,6 +377,9 @@
       ".h",
       ".m"
     ],
+    "Objective-C++": [
+      ".mm"
+    ],
     "OCaml": [
       ".eliom",
       ".ml"
@@ -250,9 +400,16 @@
     "Org": [
       ".org"
     ],
+    "Ox": [
+      ".ox",
+      ".oxh",
+      ".oxo"
+    ],
     "Oxygene": [
-      ".oxygene",
-      ".pas"
+      ".oxygene"
+    ],
+    "Pan": [
+      ".pan"
     ],
     "Parrot Assembly": [
       ".pasm"
@@ -263,21 +420,39 @@
     "Pascal": [
       ".dpr"
     ],
+    "PAWN": [
+      ".pwn"
+    ],
     "Perl": [
       ".fcgi",
       ".pl",
       ".pm",
+      ".pod",
       ".script!",
       ".t"
     ],
+    "Perl6": [
+      ".p6",
+      ".pm6"
+    ],
     "PHP": [
       ".module",
       ".php",
       ".script!"
     ],
+    "Pike": [
+      ".pike",
+      ".pmod"
+    ],
+    "Pod": [
+      ".pod"
+    ],
     "PogoScript": [
       ".pogo"
     ],
+    "PostScript": [
+      ".ps"
+    ],
     "PowerShell": [
       ".ps1",
       ".psm1"
@@ -286,13 +461,23 @@
       ".pde"
     ],
     "Prolog": [
-      ".pl"
+      ".ecl",
+      ".pl",
+      ".prolog"
+    ],
+    "Propeller Spin": [
+      ".spin"
     ],
     "Protocol Buffer": [
       ".proto"
     ],
+    "PureScript": [
+      ".purs"
+    ],
     "Python": [
       ".py",
+      ".pyde",
+      ".pyp",
       ".script!"
     ],
     "QMake": [
@@ -302,6 +487,9 @@
     ],
     "R": [
       ".R",
+      ".Rd",
+      ".r",
+      ".rsx",
       ".script!"
     ],
     "Racket": [
@@ -313,27 +501,19 @@
     "RDoc": [
       ".rdoc"
     ],
-    "C++": [
-      ".cc",
-      ".cpp",
-      ".h",
-      ".hpp"
-    ],
-    "Forth": [
-      ".forth",
-      ".fth"
-    ],
-    "Lasso": [
-      ".las",
-      ".lasso",
-      ".lasso9",
-      ".ldml"
-    ],
-    "MoonScript": [
-      ".moon"
-    ],
     "Rebol": [
-      ".r"
+      ".r",
+      ".r2",
+      ".r3",
+      ".reb",
+      ".rebol"
+    ],
+    "Red": [
+      ".red",
+      ".reds"
+    ],
+    "RMarkdown": [
+      ".rmd"
     ],
     "RobotFramework": [
       ".robot"
@@ -348,18 +528,23 @@
     "Rust": [
       ".rs"
     ],
+    "SAS": [
+      ".sas"
+    ],
     "Sass": [
       ".sass",
       ".scss"
     ],
     "Scala": [
       ".sbt",
+      ".sc",
       ".script!"
     ],
     "Scaml": [
       ".scaml"
     ],
     "Scheme": [
+      ".sld",
       ".sps"
     ],
     "Scilab": [
@@ -376,20 +561,69 @@
       ".sh",
       ".zsh"
     ],
+    "ShellSession": [
+      ".sh-session"
+    ],
+    "Shen": [
+      ".shen"
+    ],
     "Slash": [
       ".sl"
     ],
+    "Slim": [
+      ".slim"
+    ],
+    "Smalltalk": [
+      ".st"
+    ],
+    "SourcePawn": [
+      ".sp"
+    ],
+    "SQL": [
+      ".prc",
+      ".sql",
+      ".tab",
+      ".udf",
+      ".viw"
+    ],
     "Squirrel": [
       ".nut"
     ],
     "Standard ML": [
+      ".ML",
+      ".fun",
       ".sig",
       ".sml"
     ],
+    "Stata": [
+      ".ado",
+      ".do",
+      ".doh",
+      ".ihlp",
+      ".mata",
+      ".matah",
+      ".sthlp"
+    ],
+    "STON": [
+      ".ston"
+    ],
+    "Stylus": [
+      ".styl"
+    ],
     "SuperCollider": [
-      ".sc",
       ".scd"
     ],
+    "Swift": [
+      ".swift"
+    ],
+    "SystemVerilog": [
+      ".sv",
+      ".svh",
+      ".vh"
+    ],
+    "Tcl": [
+      ".tm"
+    ],
     "Tea": [
       ".tea"
     ],
@@ -408,6 +642,9 @@
     "UnrealScript": [
       ".uc"
     ],
+    "VCL": [
+      ".vcl"
+    ],
     "Verilog": [
       ".v"
     ],
@@ -415,7 +652,9 @@
       ".vhd"
     ],
     "Visual Basic": [
-      ".cls"
+      ".cls",
+      ".vb",
+      ".vbhtml"
     ],
     "Volt": [
       ".volt"
@@ -428,9 +667,26 @@
     ],
     "XML": [
       ".ant",
+      ".csproj",
+      ".filters",
+      ".fsproj",
       ".ivy",
+      ".nproj",
+      ".nuspec",
+      ".pluginspec",
+      ".targets",
+      ".vbproj",
+      ".vcxproj",
       ".xml"
     ],
+    "Xojo": [
+      ".xojo_code",
+      ".xojo_menu",
+      ".xojo_report",
+      ".xojo_script",
+      ".xojo_toolbar",
+      ".xojo_window"
+    ],
     "XProc": [
       ".xpl"
     ],
@@ -442,6 +698,15 @@
     ],
     "Xtend": [
       ".xtend"
+    ],
+    "YAML": [
+      ".yml"
+    ],
+    "Zephir": [
+      ".zep"
+    ],
+    "Zimpl": [
+      ".zmpl"
     ]
   },
   "interpreters": {
@@ -466,6 +731,9 @@
     "Perl": [
       "ack"
     ],
+    "R": [
+      "expr-dist"
+    ],
     "Ruby": [
       "Appraisals",
       "Capfile",
@@ -503,10 +771,15 @@
     ],
     "YAML": [
       ".gemrc"
+    ],
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@@ -825,6 +1098,241 @@
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       "ServerSignature": 1,
       "Off": 1,
@@ -2002,6 +2510,1962 @@
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       "list": 1
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+      "fcomi_instruction": 1,
+      "fcomip_instruction": 1,
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+      "make_mmx_prefix": 9,
+      "mmx_mmreg_mmreg": 3,
+      "mmx_mmreg_mem": 2,
+      "mmx_bit_shift_instruction": 1,
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+      "pmovmskb_reg_size_ok": 2,
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+      "movdq_mmreg_mmreg": 2,
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+      "movq2dq_": 2,
+      "movq2dq_instruction": 1,
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+      "take_additional_xmm0": 3,
+      "sse_xmmreg_xmmreg_ok": 4,
+      "sse_cmp_nomem_ok": 3,
+      "sse_nomem_ok": 2,
+      "additional_xmm0_ok": 2,
+      "pslldq_instruction": 1,
+      "movpd_instruction": 1,
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+      "sse_mov_instruction": 3,
+      "movss_instruction": 1,
+      "sse_movs": 2,
+      "movsd_instruction": 1,
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+      "sse_mem": 2,
+      "sse_mem_xmmreg": 2,
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+      "maskmov_instruction": 2,
+      "maskmovdqu_instruction": 1,
+      "movmskpd_instruction": 1,
+      "movmskps_instruction": 1,
+      "movmskps_reg_ok": 2,
+      "cvtpi2pd_instruction": 1,
+      "cvtpi2ps_instruction": 1
+    },
+    "ATS": {
+      "//": 211,
+      "#include": 16,
+      "staload": 25,
+      "_": 25,
+      "sortdef": 2,
+      "ftype": 13,
+      "type": 30,
+      "-": 49,
+      "infixr": 2,
+      "(": 562,
+      ")": 567,
+      "typedef": 10,
+      "a": 200,
+      "b": 26,
+      "<cloref1>": 2,
+      "functor": 12,
+      "F": 34,
+      "{": 142,
+      "}": 141,
+      "list0": 9,
+      "extern": 13,
+      "val": 95,
+      "functor_list0": 7,
+      "implement": 55,
+      "f": 22,
+      "lam": 20,
+      "xs": 82,
+      "list0_map": 2,
+      "<a>": 14,
+      "<b>": 3,
+      "datatype": 4,
+      "CoYoneda": 7,
+      "r": 25,
+      "of": 59,
+      "fun": 56,
+      "CoYoneda_phi": 2,
+      "CoYoneda_psi": 3,
+      "ftor": 9,
+      "fx": 8,
+      "x": 48,
+      "int0": 4,
+      "I": 8,
+      "int": 2,
+      "bool": 27,
+      "True": 7,
+      "|": 22,
+      "False": 8,
+      "boxed": 2,
+      "boolean": 2,
+      "bool2string": 4,
+      "string": 2,
+      "case": 9,
+      "+": 20,
+      "fprint_val": 2,
+      "<bool>": 2,
+      "out": 8,
+      "fprint": 3,
+      "int2bool": 2,
+      "i": 6,
+      "let": 34,
+      "in": 48,
+      "if": 7,
+      "then": 11,
+      "else": 7,
+      "end": 73,
+      "myintlist0": 2,
+      "g0ofg1": 1,
+      "list": 1,
+      "myboolist0": 9,
+      "fprintln": 3,
+      "stdout_ref": 4,
+      "main0": 3,
+      "UN": 3,
+      "phil_left": 3,
+      "n": 51,
+      "phil_right": 3,
+      "nmod": 1,
+      "NPHIL": 6,
+      "randsleep": 6,
+      "intGte": 1,
+      "void": 14,
+      "ignoret": 2,
+      "sleep": 2,
+      "UN.cast": 2,
+      "uInt": 1,
+      "rand": 1,
+      "mod": 1,
+      "phil_think": 3,
+      "println": 9,
+      "phil_dine": 3,
+      "lf": 5,
+      "rf": 5,
+      "phil_loop": 10,
+      "nl": 2,
+      "nr": 2,
+      "ch_lfork": 2,
+      "fork_changet": 5,
+      "ch_rfork": 2,
+      "channel_takeout": 4,
+      "HX": 1,
+      "try": 1,
+      "to": 16,
+      "actively": 1,
+      "induce": 1,
+      "deadlock": 2,
+      "ch_forktray": 3,
+      "forktray_changet": 4,
+      "channel_insert": 5,
+      "[": 49,
+      "]": 48,
+      "cleaner_wash": 3,
+      "fork_get_num": 4,
+      "cleaner_return": 4,
+      "ch": 7,
+      "cleaner_loop": 6,
+      "f0": 3,
+      "dynload": 3,
+      "local": 10,
+      "mythread_create_cloptr": 6,
+      "llam": 6,
+      "while": 1,
+      "true": 5,
+      "%": 7,
+      "#": 7,
+      "#define": 4,
+      "nphil": 13,
+      "natLt": 2,
+      "absvtype": 2,
+      "fork_vtype": 3,
+      "ptr": 2,
+      "vtypedef": 2,
+      "fork": 16,
+      "channel": 11,
+      "datavtype": 1,
+      "FORK": 3,
+      "assume": 2,
+      "the_forkarray": 2,
+      "t": 1,
+      "array_tabulate": 1,
+      "fopr": 1,
+      "<t>": 2,
+      "where": 6,
+      "channel_create_exn": 2,
+      "<fork>": 2,
+      "i2sz": 4,
+      "arrayref_tabulate": 1,
+      "the_forktray": 2,
+      "set_vtype": 3,
+      "t@ype": 2,
+      "set": 34,
+      "t0p": 31,
+      "compare_elt_elt": 4,
+      "x1": 1,
+      "x2": 1,
+      "<": 14,
+      "linset_nil": 2,
+      "linset_make_nil": 2,
+      "linset_sing": 2,
+      "<!wrt>": 16,
+      "linset_make_sing": 2,
+      "linset_make_list": 1,
+      "List": 1,
+      "INV": 24,
+      "linset_is_nil": 2,
+      "linset_isnot_nil": 2,
+      "linset_size": 2,
+      "size_t": 1,
+      "linset_is_member": 3,
+      "x0": 22,
+      "linset_isnot_member": 1,
+      "linset_copy": 2,
+      "linset_free": 2,
+      "linset_insert": 3,
+      "&": 17,
+      "linset_takeout": 1,
+      "res": 9,
+      "opt": 6,
+      "endfun": 1,
+      "linset_takeout_opt": 1,
+      "Option_vt": 4,
+      "linset_remove": 2,
+      "linset_choose": 3,
+      "linset_choose_opt": 1,
+      "linset_takeoutmax": 1,
+      "linset_takeoutmax_opt": 1,
+      "linset_takeoutmin": 1,
+      "linset_takeoutmin_opt": 1,
+      "fprint_linset": 3,
+      "sep": 1,
+      "FILEref": 2,
+      "overload": 1,
+      "with": 1,
+      "env": 11,
+      "vt0p": 2,
+      "linset_foreach": 3,
+      "fwork": 3,
+      "linset_foreach_env": 3,
+      "linset_listize": 2,
+      "List0_vt": 5,
+      "linset_listize1": 2,
+      "code": 6,
+      "reuse": 2,
+      "elt": 2,
+      "list_vt_nil": 16,
+      "list_vt_cons": 17,
+      "list_vt_is_nil": 1,
+      "list_vt_is_cons": 1,
+      "list_vt_length": 1,
+      "aux": 4,
+      "nat": 4,
+      ".": 14,
+      "<n>": 3,
+      "list_vt": 7,
+      "sgn": 9,
+      "false": 6,
+      "list_vt_copy": 2,
+      "list_vt_free": 1,
+      "mynode_cons": 4,
+      "nx": 22,
+      "mynode1": 6,
+      "xs1": 15,
+      "UN.castvwtp0": 8,
+      "List1_vt": 5,
+      "@list_vt_cons": 5,
+      "xs2": 3,
+      "prval": 20,
+      "UN.cast2void": 5,
+      ";": 4,
+      "fold@": 8,
+      "ins": 3,
+      "tail": 1,
+      "recursive": 1,
+      "n1": 4,
+      "<=>": 1,
+      "1": 3,
+      "mynode_make_elt": 4,
+      "ans": 2,
+      "is": 26,
+      "found": 1,
+      "effmask_all": 3,
+      "free@": 1,
+      "xs1_": 3,
+      "rem": 1,
+      "*": 2,
+      "opt_some": 1,
+      "opt_none": 1,
+      "list_vt_foreach": 1,
+      "<env>": 3,
+      "list_vt_foreach_env": 1,
+      "mynode_null": 5,
+      "mynode": 3,
+      "null": 1,
+      "the_null_ptr": 1,
+      "mynode_free": 1,
+      "nx2": 4,
+      "mynode_get_elt": 1,
+      "nx1": 7,
+      "UN.castvwtp1": 2,
+      "mynode_set_elt": 1,
+      "l": 3,
+      "__assert": 2,
+      "praxi": 1,
+      "mynode_getfree_elt": 1,
+      "linset_takeout_ngc": 2,
+      "takeout": 3,
+      "mynode0": 1,
+      "pf_x": 6,
+      "view@x": 3,
+      "pf_xs1": 6,
+      "view@xs1": 3,
+      "linset_takeoutmax_ngc": 2,
+      "xs_": 4,
+      "@list_vt_nil": 1,
+      "linset_takeoutmin_ngc": 2,
+      "unsnoc": 4,
+      "pos": 1,
+      "and": 10,
+      "fold@xs": 1,
+      "ATS_PACKNAME": 1,
+      "ATS_STALOADFLAG": 1,
+      "no": 2,
+      "static": 1,
+      "loading": 1,
+      "at": 2,
+      "run": 1,
+      "time": 1,
+      "castfn": 1,
+      "linset2list": 1,
+      "<!DOCTYPE>": 1,
+      "html": 1,
+      "PUBLIC": 1,
+      "W3C": 1,
+      "DTD": 2,
+      "XHTML": 1,
+      "EN": 1,
+      "http": 2,
+      "www": 1,
+      "w3": 1,
+      "org": 1,
+      "TR": 1,
+      "xhtml11": 2,
+      "dtd": 1,
+      "<html>": 1,
+      "xmlns=": 1,
+      "<head>": 1,
+      "<meta>": 1,
+      "equiv=": 1,
+      "content=": 1,
+      "<title>": 1,
+      "EFFECTIVATS": 1,
+      "DiningPhil2": 1,
+      "</title>": 1,
+      "#patscode_style": 1,
+      "</head>": 1,
+      "<body>": 1,
+      "<h1>": 1,
+      "Effective": 1,
+      "ATS": 2,
+      "Dining": 2,
+      "Philosophers": 2,
+      "</h1>": 1,
+      "In": 2,
+      "this": 2,
+      "article": 2,
+      "present": 1,
+      "an": 6,
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+      "slight": 1,
+      "variant": 1,
+      "the": 30,
+      "famous": 1,
+      "problem": 1,
+      "by": 4,
+      "Dijkstra": 1,
+      "that": 8,
+      "makes": 1,
+      "simple": 1,
+      "but": 1,
+      "convincing": 1,
+      "use": 1,
+      "linear": 2,
+      "types.": 1,
+      "<h2>": 8,
+      "The": 8,
+      "Original": 2,
+      "Problem": 2,
+      "</h2>": 8,
+      "There": 3,
+      "are": 7,
+      "five": 1,
+      "philosophers": 1,
+      "sitting": 1,
+      "around": 1,
+      "table": 3,
+      "there": 3,
+      "also": 3,
+      "forks": 7,
+      "placed": 1,
+      "on": 8,
+      "such": 1,
+      "each": 2,
+      "located": 2,
+      "between": 1,
+      "left": 3,
+      "hand": 6,
+      "philosopher": 5,
+      "right": 3,
+      "another": 1,
+      "philosopher.": 1,
+      "Each": 4,
+      "does": 1,
+      "following": 6,
+      "routine": 1,
+      "repeatedly": 1,
+      "thinking": 1,
+      "dining.": 1,
+      "order": 1,
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+      "acquire": 1,
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+      "one": 3,
+      "his": 4,
+      "side": 2,
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+      "side.": 2,
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+      "dining": 1,
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+      "onto": 1,
+      "A": 6,
+      "Variant": 1,
+      "twist": 1,
+      "added": 1,
+      "original": 1,
+      "version": 1,
+      "<p>": 1,
+      "used": 1,
+      "it": 2,
+      "becomes": 1,
+      "be": 9,
+      "put": 1,
+      "tray": 2,
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       "Hello": 1,
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       "buttons": 1
     },
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-      "char": 529,
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-      "struct": 359,
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-      "void": 284,
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       "long": 105,
       "size": 120,
       "item": 24,
       "object.parsed": 4,
-      "#ifndef": 85,
+      "#ifndef": 89,
       "BLOB_H": 2,
-      "#define": 912,
+      "#define": 920,
       "extern": 38,
-      "#endif": 239,
+      "#endif": 243,
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+      "memcpy": 35,
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       "git_vector_swap": 1,
       "git_pool_swap": 1,
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+      "<string.h>": 5,
+      "atslib_dynarray_memcpy": 1,
+      "atslib_dynarray_memmove": 1,
+      "memmove": 2,
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+      "ifndef": 2,
       "git_usage_string": 2,
       "git_more_info_string": 2,
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-      "*var": 1,
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       "data": 69,
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       "MIN": 3,
@@ -4748,6 +7257,15 @@
       "rb_define_class": 1,
       "rb_cObject": 1,
       "rb_define_method": 2,
+      "READLINE_READLINE_CATS": 3,
+      "<readline/readline.h>": 1,
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+      "rl_library_version": 1,
+      "atscntrb_readline_rl_readline_version": 1,
+      "rl_readline_version": 1,
+      "atscntrb_readline_readline": 1,
+      "readline": 1,
       "<time.h>": 1,
       "<signal.h>": 1,
       "<stdarg.h>": 1,
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@@ -5625,11 +8140,174 @@
       "aeSetBeforeSleepProc": 1,
       "aeMain": 1,
       "aeDeleteEventLoop": 1,
-      "<String/rfc_string.h>": 2,
+      "<rf_io.h>": 1,
       "<rf_utils.h>": 2,
+      "<String/rfc_string.h>": 2,
+      "rfUTF8_IsContinuationbyte": 1,
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+      "utf8": 36,
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+      "bufferSize": 6,
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+      "found": 20,
+      "*eofReached": 14,
+      "LOG_ERROR": 64,
+      "RF_HEXEQ_UI": 7,
+      "rfFgetc_UTF32BE": 3,
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+      "RF_HEXL_US": 8,
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+      "RE_UTF16_NO_SURRPAIR": 2,
+      "xDC00": 4,
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+      "REFU_WIN32_VERSION": 1,
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+      "rfFReadLine_UTF16BE": 6,
+      "rfFReadLine_UTF16LE": 4,
+      "rfFReadLine_UTF32BE": 1,
+      "rfFReadLine_UTF32LE": 4,
+      "rfFgets_UTF32BE": 1,
+      "RF_IAMHERE_FOR_DOXYGEN": 22,
+      "rfPopen": 2,
+      "command": 2,
+      "i_rfPopen": 2,
+      "i_CMD_": 2,
+      "i_MODE_": 2,
+      "i_rfLMS_WRAP2": 5,
+      "rfPclose": 1,
+      "stream": 3,
+      "///closing": 1,
+      "#endif//include": 1,
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       "<String/rfc_stringx.h>": 1,
       "<rf_localmem.h>": 2,
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       "local": 5,
       "stack": 6,
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-      "bytes": 225,
       "i_NVrfString_Create": 3,
       "i_rfString_CreateLocal1": 3,
       "RF_OPTION_SOURCE_ENCODING": 30,
@@ -5663,10 +8336,7 @@
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       "RF_UTF32_LE": 3,
       "RF_UTF32_BE": 3,
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       "UTF16": 4,
-      "rfUTILS_Endianess": 24,
-      "RF_LITTLE_ENDIAN": 23,
       "rfUTF16_Decode": 5,
       "rfUTF16_Decode_swap": 5,
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@@ -5674,19 +8344,13 @@
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-      "RF_BIG_ENDIAN": 10,
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       "UTF": 17,
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@@ -5694,7 +8358,6 @@
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       "temporary": 4,
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       "sequence": 6,
       "could": 2,
       "not": 6,
@@ -5708,9 +8371,7 @@
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       "since": 5,
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-      "we": 10,
       "have": 2,
-      "check": 8,
       "validity": 2,
       "get": 4,
       "Error": 2,
@@ -5735,7 +8396,6 @@
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       "proccess": 2,
       "RE_LOCALMEMSTACK_INSUFFICIENT": 8,
-      "RE_UTF16_INVALID_SEQUENCE": 20,
       "i_NVrfString_CreateLocal": 3,
       "during": 1,
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       "RF_HEXGE_UI": 6,
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@@ -5773,10 +8431,8 @@
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       "rfString_Create_UTF16": 2,
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       "rfString_Init_UTF16": 3,
       "utf8ByteLength": 34,
-      "utf8": 36,
       "last": 1,
       "utf": 1,
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@@ -5785,15 +8441,12 @@
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@@ -5821,7 +8474,6 @@
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       "rfString_ToUTF16": 4,
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@@ -5835,18 +8487,12 @@
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       "RF_STRING_INDEX_OUT_OF_BOUNDS": 2,
       "rfString_BytePosToCodePoint": 7,
-      "RF_HEXEQ_C": 9,
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-      "xE0": 2,
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       "s1P": 2,
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       "*optionsP": 8,
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@@ -5869,11 +8514,9 @@
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       "RFS_": 8,
-      "RF_SUCCESS": 14,
       "ERANGE": 1,
       "RE_STRING_TOFLOAT_UNDERFLOW": 1,
       "RE_STRING_TOFLOAT": 1,
@@ -5900,7 +8543,6 @@
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       "rfString_Tokenize": 2,
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@@ -5938,7 +8580,6 @@
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@@ -5978,7 +8619,6 @@
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@@ -6001,7 +8641,6 @@
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       "*numP": 1,
@@ -6045,13 +8684,8 @@
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       "rfString_StripEnd": 3,
       "rfString_Create_fUTF8": 2,
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       "rfString_Init_fUTF8": 3,
-      "bytesN": 98,
-      "bufferSize": 6,
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+      "depending": 1,
+      "activity": 1,
+      "host": 1,
+      "etc": 1,
+      "might": 1,
+      "significantly": 1,
+      "longer": 1,
+      "delay": 9,
+      "times": 2,
+      "than": 6,
+      "one": 73,
+      "asked": 1,
+      "for.": 1,
+      "So": 1,
+      "please": 2,
+      "dont": 1,
+      "request.": 1,
+      "Arjan": 2,
+      "reports": 1,
+      "prevent": 4,
+      "fragment": 2,
+      "struct": 13,
+      "sched_param": 1,
+      "sp": 4,
+      "memset": 3,
+      "&": 203,
+      "sizeof": 15,
+      "sp.sched_priority": 1,
+      "sched_get_priority_max": 1,
+      "SCHED_FIFO": 2,
+      "sched_setscheduler": 1,
+      "mlockall": 1,
+      "MCL_CURRENT": 1,
+      "|": 40,
+      "MCL_FUTURE": 1,
+      "Open": 2,
+      "Source": 2,
+      "Licensing": 2,
+      "GPL": 2,
+      "appropriate": 7,
+      "option": 1,
+      "if": 359,
+      "want": 5,
+      "share": 2,
+      "source": 12,
+      "application": 2,
+      "everyone": 1,
+      "distribute": 1,
+      "give": 2,
+      "them": 1,
+      "right": 9,
+      "who": 1,
+      "uses": 4,
+      "it.": 3,
+      "wish": 2,
+      "software": 1,
+      "under": 2,
+      "contribute": 1,
+      "open": 6,
+      "community": 1,
+      "accordance": 1,
+      "distributed.": 1,
+      "//www.gnu.org/copyleft/gpl.html": 1,
+      "COPYING": 1,
+      "Acknowledgements": 1,
+      "Some": 1,
+      "inspired": 2,
+      "Dom": 1,
+      "Gert.": 1,
+      "Alan": 1,
+      "Barr.": 1,
+      "Revision": 1,
+      "History": 1,
+      "Initial": 1,
+      "release": 1,
+      "Minor": 1,
+      "bug": 1,
+      "fixes": 1,
+      "Added": 11,
+      "bcm2835_spi_transfern": 3,
+      "Fixed": 4,
+      "problem": 2,
+      "prevented": 1,
+      "being": 4,
+      "used.": 2,
+      "Reported": 5,
+      "David": 1,
+      "Robinson.": 1,
+      "bcm2835_close": 4,
+      "deinit": 1,
+      "library.": 3,
+      "Suggested": 1,
+      "sar": 1,
+      "Ortiz": 1,
+      "Document": 1,
+      "testing": 2,
+      "Functions": 1,
+      "bcm2835_gpio_ren": 3,
+      "bcm2835_gpio_fen": 3,
+      "bcm2835_gpio_hen": 3,
+      "bcm2835_gpio_aren": 3,
+      "bcm2835_gpio_afen": 3,
+      "now": 4,
+      "only": 6,
+      "specified.": 1,
+      "Other": 1,
+      "were": 1,
+      "already": 1,
+      "previously": 10,
+      "enabled": 4,
+      "stay": 1,
+      "enabled.": 1,
+      "bcm2835_gpio_clr_ren": 2,
+      "bcm2835_gpio_clr_fen": 2,
+      "bcm2835_gpio_clr_hen": 2,
+      "bcm2835_gpio_clr_len": 2,
+      "bcm2835_gpio_clr_aren": 2,
+      "bcm2835_gpio_clr_afen": 2,
+      "clear": 3,
+      "enable": 3,
+      "individual": 1,
+      "suggested": 3,
+      "Andreas": 1,
+      "Sundstrom.": 1,
+      "bcm2835_spi_transfernb": 2,
+      "buffers": 3,
+      "read": 21,
+      "write.": 1,
+      "Improvements": 3,
+      "barrier": 3,
+      "maddin.": 1,
+      "contributed": 1,
+      "mikew": 1,
+      "noticed": 1,
+      "was": 6,
+      "mallocing": 1,
+      "memory": 14,
+      "mmaps": 1,
+      "/dev/mem.": 1,
+      "ve": 4,
+      "removed": 1,
+      "mallocs": 1,
+      "frees": 1,
+      "found": 1,
+      "calling": 9,
+      "nanosleep": 7,
+      "takes": 1,
+      "least": 2,
+      "us.": 1,
+      "need": 6,
+      "link": 3,
+      "version.": 1,
+      "s": 26,
+      "doc": 1,
+      "Also": 1,
+      "added": 2,
+      "define": 2,
+      "passwrd": 1,
+      "value": 50,
+      "Gert": 1,
+      "says": 1,
+      "needed": 3,
+      "change": 3,
+      "pad": 4,
+      "settings.": 1,
+      "Changed": 1,
+      "names": 3,
+      "collisions": 1,
+      "wiringPi.": 1,
+      "Macros": 2,
+      "delayMicroseconds": 3,
+      "disabled": 2,
+      "defining": 1,
+      "BCM2835_NO_DELAY_COMPATIBILITY": 2,
+      "incorrect": 2,
+      "New": 6,
+      "mapping": 3,
+      "Hardware": 1,
+      "pointers": 2,
+      "initialisation": 2,
+      "externally": 1,
+      "bcm2835_spi0.": 1,
+      "Now": 4,
+      "compiles": 1,
+      "even": 2,
+      "CLOCK_MONOTONIC_RAW": 1,
+      "CLOCK_MONOTONIC": 3,
+      "instead.": 1,
+      "errors": 1,
+      "divider": 15,
+      "frequencies": 2,
+      "MHz": 14,
+      "clock.": 6,
+      "Ben": 1,
+      "Simpson.": 1,
+      "end": 23,
+      "examples": 1,
+      "Mark": 5,
+      "Wolfe.": 1,
+      "bcm2835_gpio_set_multi": 2,
+      "bcm2835_gpio_clr_multi": 2,
+      "bcm2835_gpio_write_multi": 4,
+      "mask": 20,
+      "once.": 1,
+      "Requested": 2,
+      "Sebastian": 2,
+      "Loncar.": 2,
+      "bcm2835_gpio_write_mask.": 1,
+      "Changes": 1,
+      "timer": 2,
+      "counter": 1,
+      "instead": 4,
+      "clock_gettime": 1,
+      "improved": 1,
+      "accuracy.": 1,
+      "No": 2,
+      "lrt": 1,
+      "now.": 1,
+      "Contributed": 1,
+      "van": 1,
+      "Vught.": 1,
+      "Removed": 1,
+      "inlines": 1,
+      "previous": 6,
+      "patch": 1,
+      "since": 3,
+      "don": 1,
+      "t": 15,
+      "seem": 1,
+      "work": 1,
+      "everywhere.": 1,
+      "olly.": 1,
+      "Patch": 2,
+      "Dootson": 2,
+      "close": 7,
+      "/dev/mem": 4,
+      "granted.": 1,
+      "susceptible": 1,
+      "bit": 19,
+      "overruns.": 1,
+      "courtesy": 1,
+      "Jeremy": 1,
+      "Mortis.": 1,
+      "definition": 3,
+      "BCM2835_GPFEN0": 2,
+      "broke": 1,
+      "ability": 1,
+      "falling": 4,
+      "edge": 8,
+      "events.": 1,
+      "Dootson.": 2,
+      "bcm2835_i2c_set_baudrate": 2,
+      "bcm2835_i2c_read_register_rs.": 1,
+      "bcm2835_i2c_read": 4,
+      "bcm2835_i2c_write": 4,
+      "fix": 1,
+      "ocasional": 1,
+      "reads": 2,
+      "completing.": 1,
+      "Patched": 1,
+      "p": 6,
+      "[": 293,
+      "atched": 1,
+      "his": 1,
+      "submitted": 1,
+      "high": 5,
+      "load": 1,
+      "processes.": 1,
+      "Updated": 1,
+      "distribution": 1,
+      "location": 6,
+      "details": 1,
+      "airspayce.com": 1,
+      "missing": 1,
+      "unmapmem": 1,
+      "pads": 7,
+      "leak.": 1,
+      "Hartmut": 1,
+      "Henkel.": 1,
+      "Mike": 1,
+      "McCauley": 1,
+      "mikem@airspayce.com": 1,
+      "DO": 1,
+      "NOT": 3,
+      "CONTACT": 1,
+      "THE": 2,
+      "AUTHOR": 1,
+      "DIRECTLY": 1,
+      "USE": 1,
+      "LISTS": 1,
+      "#ifndef": 29,
+      "BCM2835_H": 3,
+      "#define": 343,
+      "#include": 129,
+      "<stdint.h>": 2,
+      "defgroup": 7,
+      "constants": 1,
+      "Constants": 1,
+      "passing": 1,
+      "values": 3,
+      "here": 1,
+      "@": 14,
+      "HIGH": 12,
+      "true": 49,
+      "volts": 2,
+      "pin.": 21,
+      "false": 48,
+      "Speed": 1,
+      "core": 1,
+      "clock": 21,
+      "core_clk": 1,
+      "BCM2835_CORE_CLK_HZ": 1,
+      "<": 255,
+      "Base": 17,
+      "Address": 10,
+      "BCM2835_PERI_BASE": 9,
+      "System": 10,
+      "Timer": 9,
+      "BCM2835_ST_BASE": 1,
+      "BCM2835_GPIO_PADS": 2,
+      "Clock/timer": 1,
+      "BCM2835_CLOCK_BASE": 1,
+      "BCM2835_GPIO_BASE": 6,
+      "BCM2835_SPI0_BASE": 1,
+      "BSC0": 2,
+      "BCM2835_BSC0_BASE": 1,
+      "PWM": 2,
+      "BCM2835_GPIO_PWM": 1,
+      "C000": 1,
+      "BSC1": 2,
+      "BCM2835_BSC1_BASE": 1,
+      "ST": 1,
+      "registers.": 10,
+      "Available": 8,
+      "bcm2835_init": 11,
+      "extern": 72,
+      "volatile": 13,
+      "uint32_t": 39,
+      "*bcm2835_st": 1,
+      "*bcm2835_gpio": 1,
+      "*bcm2835_pwm": 1,
+      "*bcm2835_clk": 1,
+      "PADS": 1,
+      "*bcm2835_pads": 1,
+      "*bcm2835_spi0": 1,
+      "*bcm2835_bsc0": 1,
+      "*bcm2835_bsc1": 1,
+      "Size": 2,
+      "page": 5,
+      "BCM2835_PAGE_SIZE": 1,
+      "*1024": 2,
+      "block": 7,
+      "BCM2835_BLOCK_SIZE": 1,
+      "offsets": 2,
+      "BCM2835_GPIO_BASE.": 1,
+      "Offsets": 1,
+      "into": 6,
+      "bytes": 29,
+      "per": 3,
+      "Register": 1,
+      "View": 1,
+      "BCM2835_GPFSEL0": 1,
+      "Function": 8,
+      "Select": 49,
+      "BCM2835_GPFSEL1": 1,
+      "BCM2835_GPFSEL2": 1,
+      "BCM2835_GPFSEL3": 1,
+      "c": 72,
+      "BCM2835_GPFSEL4": 1,
+      "BCM2835_GPFSEL5": 1,
+      "BCM2835_GPSET0": 1,
+      "Output": 6,
+      "Set": 2,
+      "BCM2835_GPSET1": 1,
+      "BCM2835_GPCLR0": 1,
+      "Clear": 18,
+      "BCM2835_GPCLR1": 1,
+      "BCM2835_GPLEV0": 1,
+      "Level": 2,
+      "BCM2835_GPLEV1": 1,
+      "BCM2835_GPEDS0": 1,
+      "Event": 11,
+      "Detect": 35,
+      "Status": 6,
+      "BCM2835_GPEDS1": 1,
+      "BCM2835_GPREN0": 1,
+      "Rising": 8,
+      "Edge": 16,
+      "Enable": 38,
+      "BCM2835_GPREN1": 1,
+      "Falling": 8,
+      "BCM2835_GPFEN1": 1,
+      "BCM2835_GPHEN0": 1,
+      "High": 4,
+      "BCM2835_GPHEN1": 1,
+      "BCM2835_GPLEN0": 1,
+      "Low": 5,
+      "BCM2835_GPLEN1": 1,
+      "BCM2835_GPAREN0": 1,
+      "Async.": 4,
+      "BCM2835_GPAREN1": 1,
+      "BCM2835_GPAFEN0": 1,
+      "BCM2835_GPAFEN1": 1,
+      "BCM2835_GPPUD": 1,
+      "Pull": 11,
+      "up/down": 10,
+      "BCM2835_GPPUDCLK0": 1,
+      "Clock": 11,
+      "BCM2835_GPPUDCLK1": 1,
+      "brief": 12,
+      "bcm2835PortFunction": 1,
+      "Port": 1,
+      "function": 19,
+      "select": 9,
+      "modes": 1,
+      "bcm2835_gpio_fsel": 2,
+      "typedef": 50,
+      "enum": 17,
+      "BCM2835_GPIO_FSEL_INPT": 1,
+      "b000": 1,
+      "Input": 2,
+      "BCM2835_GPIO_FSEL_OUTP": 1,
+      "b001": 1,
+      "BCM2835_GPIO_FSEL_ALT0": 1,
+      "b100": 1,
+      "Alternate": 6,
+      "BCM2835_GPIO_FSEL_ALT1": 1,
+      "b101": 1,
+      "BCM2835_GPIO_FSEL_ALT2": 1,
+      "b110": 1,
+      "BCM2835_GPIO_FSEL_ALT3": 1,
+      "b111": 2,
+      "BCM2835_GPIO_FSEL_ALT4": 1,
+      "b011": 1,
+      "BCM2835_GPIO_FSEL_ALT5": 1,
+      "b010": 1,
+      "BCM2835_GPIO_FSEL_MASK": 1,
+      "bits": 11,
+      "bcm2835FunctionSelect": 2,
+      "bcm2835PUDControl": 4,
+      "Pullup/Pulldown": 1,
+      "defines": 3,
+      "bcm2835_gpio_pud": 5,
+      "BCM2835_GPIO_PUD_OFF": 1,
+      "b00": 1,
+      "Off": 3,
+      "pull": 1,
+      "BCM2835_GPIO_PUD_DOWN": 1,
+      "b01": 1,
+      "Down": 1,
+      "BCM2835_GPIO_PUD_UP": 1,
+      "b10": 1,
+      "Up": 1,
+      "Pad": 11,
+      "BCM2835_PADS_GPIO_0_27": 1,
+      "BCM2835_PADS_GPIO_28_45": 1,
+      "BCM2835_PADS_GPIO_46_53": 1,
+      "Control": 6,
+      "masks": 1,
+      "BCM2835_PAD_PASSWRD": 1,
+      "A": 7,
+      "<<": 29,
+      "Password": 1,
+      "BCM2835_PAD_SLEW_RATE_UNLIMITED": 1,
+      "Slew": 1,
+      "rate": 3,
+      "unlimited": 1,
+      "BCM2835_PAD_HYSTERESIS_ENABLED": 1,
+      "Hysteresis": 1,
+      "BCM2835_PAD_DRIVE_2mA": 1,
+      "mA": 8,
+      "drive": 8,
+      "current": 26,
+      "BCM2835_PAD_DRIVE_4mA": 1,
+      "BCM2835_PAD_DRIVE_6mA": 1,
+      "BCM2835_PAD_DRIVE_8mA": 1,
+      "BCM2835_PAD_DRIVE_10mA": 1,
+      "BCM2835_PAD_DRIVE_12mA": 1,
+      "BCM2835_PAD_DRIVE_14mA": 1,
+      "BCM2835_PAD_DRIVE_16mA": 1,
+      "bcm2835PadGroup": 4,
+      "specification": 1,
+      "bcm2835_gpio_pad": 2,
+      "BCM2835_PAD_GROUP_GPIO_0_27": 1,
+      "BCM2835_PAD_GROUP_GPIO_28_45": 1,
+      "BCM2835_PAD_GROUP_GPIO_46_53": 1,
+      "Numbers": 1,
+      "Here": 1,
+      "we": 10,
+      "terms": 4,
+      "numbers.": 1,
+      "These": 6,
+      "requiring": 1,
+      "bin": 1,
+      "connected": 1,
+      "adopt": 1,
+      "alternate": 7,
+      "function.": 3,
+      "slightly": 1,
+      "pinouts": 1,
+      "these": 1,
+      "RPI_V2_*.": 1,
+      "At": 1,
+      "bootup": 1,
+      "UART0_TXD": 3,
+      "UART0_RXD": 3,
+      "ie": 3,
+      "alt0": 1,
+      "respectively": 1,
+      "dedicated": 1,
+      "cant": 1,
+      "controlled": 1,
+      "independently": 1,
+      "RPI_GPIO_P1_03": 6,
+      "RPI_GPIO_P1_05": 6,
+      "RPI_GPIO_P1_07": 1,
+      "RPI_GPIO_P1_08": 1,
+      "defaults": 4,
+      "alt": 4,
+      "RPI_GPIO_P1_10": 1,
+      "RPI_GPIO_P1_11": 1,
+      "RPI_GPIO_P1_12": 1,
+      "RPI_GPIO_P1_13": 1,
+      "RPI_GPIO_P1_15": 1,
+      "RPI_GPIO_P1_16": 1,
+      "RPI_GPIO_P1_18": 1,
+      "RPI_GPIO_P1_19": 1,
+      "RPI_GPIO_P1_21": 1,
+      "RPI_GPIO_P1_22": 1,
+      "RPI_GPIO_P1_23": 1,
+      "RPI_GPIO_P1_24": 1,
+      "RPI_GPIO_P1_26": 1,
+      "RPI_V2_GPIO_P1_03": 1,
+      "RPI_V2_GPIO_P1_05": 1,
+      "RPI_V2_GPIO_P1_07": 1,
+      "RPI_V2_GPIO_P1_08": 1,
+      "RPI_V2_GPIO_P1_10": 1,
+      "RPI_V2_GPIO_P1_11": 1,
+      "RPI_V2_GPIO_P1_12": 1,
+      "RPI_V2_GPIO_P1_13": 1,
+      "RPI_V2_GPIO_P1_15": 1,
+      "RPI_V2_GPIO_P1_16": 1,
+      "RPI_V2_GPIO_P1_18": 1,
+      "RPI_V2_GPIO_P1_19": 1,
+      "RPI_V2_GPIO_P1_21": 1,
+      "RPI_V2_GPIO_P1_22": 1,
+      "RPI_V2_GPIO_P1_23": 1,
+      "RPI_V2_GPIO_P1_24": 1,
+      "RPI_V2_GPIO_P1_26": 1,
+      "RPI_V2_GPIO_P5_03": 1,
+      "RPI_V2_GPIO_P5_04": 1,
+      "RPI_V2_GPIO_P5_05": 1,
+      "RPI_V2_GPIO_P5_06": 1,
+      "RPiGPIOPin": 1,
+      "BCM2835_SPI0_CS": 1,
+      "Master": 12,
+      "BCM2835_SPI0_FIFO": 1,
+      "TX": 5,
+      "RX": 7,
+      "FIFOs": 1,
+      "BCM2835_SPI0_CLK": 1,
+      "Divider": 2,
+      "BCM2835_SPI0_DLEN": 1,
+      "Data": 9,
+      "Length": 2,
+      "BCM2835_SPI0_LTOH": 1,
+      "LOSSI": 1,
+      "mode": 24,
+      "TOH": 1,
+      "BCM2835_SPI0_DC": 1,
+      "DMA": 3,
+      "DREQ": 1,
+      "Controls": 1,
+      "BCM2835_SPI0_CS_LEN_LONG": 1,
+      "Long": 1,
+      "word": 7,
+      "Lossi": 2,
+      "DMA_LEN": 1,
+      "BCM2835_SPI0_CS_DMA_LEN": 1,
+      "BCM2835_SPI0_CS_CSPOL2": 1,
+      "Chip": 9,
+      "Polarity": 5,
+      "BCM2835_SPI0_CS_CSPOL1": 1,
+      "BCM2835_SPI0_CS_CSPOL0": 1,
+      "BCM2835_SPI0_CS_RXF": 1,
+      "RXF": 2,
+      "FIFO": 25,
+      "Full": 1,
+      "BCM2835_SPI0_CS_RXR": 1,
+      "RXR": 3,
+      "needs": 4,
+      "Reading": 1,
+      "full": 9,
+      "BCM2835_SPI0_CS_TXD": 1,
+      "TXD": 2,
+      "accept": 2,
+      "BCM2835_SPI0_CS_RXD": 1,
+      "RXD": 2,
+      "contains": 2,
+      "BCM2835_SPI0_CS_DONE": 1,
+      "Done": 3,
+      "transfer": 8,
+      "BCM2835_SPI0_CS_TE_EN": 1,
+      "Unused": 2,
+      "BCM2835_SPI0_CS_LMONO": 1,
+      "BCM2835_SPI0_CS_LEN": 1,
+      "LEN": 1,
+      "LoSSI": 1,
+      "BCM2835_SPI0_CS_REN": 1,
+      "REN": 1,
+      "Read": 3,
+      "BCM2835_SPI0_CS_ADCS": 1,
+      "ADCS": 1,
+      "Automatically": 1,
+      "Deassert": 1,
+      "BCM2835_SPI0_CS_INTR": 1,
+      "INTR": 1,
+      "Interrupt": 5,
+      "BCM2835_SPI0_CS_INTD": 1,
+      "INTD": 1,
+      "BCM2835_SPI0_CS_DMAEN": 1,
+      "DMAEN": 1,
+      "BCM2835_SPI0_CS_TA": 1,
+      "Transfer": 3,
+      "Active": 2,
+      "BCM2835_SPI0_CS_CSPOL": 1,
+      "BCM2835_SPI0_CS_CLEAR": 1,
+      "BCM2835_SPI0_CS_CLEAR_RX": 1,
+      "BCM2835_SPI0_CS_CLEAR_TX": 1,
+      "BCM2835_SPI0_CS_CPOL": 1,
+      "BCM2835_SPI0_CS_CPHA": 1,
+      "Phase": 1,
+      "BCM2835_SPI0_CS_CS": 1,
+      "bcm2835SPIBitOrder": 3,
+      "Bit": 1,
+      "Specifies": 5,
+      "ordering": 4,
+      "bcm2835_spi_setBitOrder": 2,
+      "BCM2835_SPI_BIT_ORDER_LSBFIRST": 1,
+      "LSB": 1,
+      "First": 2,
+      "BCM2835_SPI_BIT_ORDER_MSBFIRST": 1,
+      "MSB": 1,
+      "Specify": 2,
+      "bcm2835_spi_setDataMode": 2,
+      "BCM2835_SPI_MODE0": 1,
+      "CPOL": 4,
+      "CPHA": 4,
+      "BCM2835_SPI_MODE1": 1,
+      "BCM2835_SPI_MODE2": 1,
+      "BCM2835_SPI_MODE3": 1,
+      "bcm2835SPIMode": 2,
+      "bcm2835SPIChipSelect": 3,
+      "BCM2835_SPI_CS0": 1,
+      "BCM2835_SPI_CS1": 1,
+      "BCM2835_SPI_CS2": 1,
+      "CS1": 1,
+      "CS2": 1,
+      "asserted": 3,
+      "BCM2835_SPI_CS_NONE": 1,
+      "CS": 5,
+      "yourself": 1,
+      "bcm2835SPIClockDivider": 3,
+      "generate": 2,
+      "Figures": 1,
+      "below": 1,
+      "period": 1,
+      "frequency.": 1,
+      "divided": 2,
+      "nominal": 2,
+      "reported": 2,
+      "contrary": 1,
+      "may": 9,
+      "shown": 1,
+      "have": 4,
+      "confirmed": 1,
+      "measurement": 2,
+      "BCM2835_SPI_CLOCK_DIVIDER_65536": 1,
+      "us": 12,
+      "kHz": 10,
+      "BCM2835_SPI_CLOCK_DIVIDER_32768": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_16384": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_8192": 1,
+      "/51757813kHz": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_4096": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_2048": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_1024": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_512": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_256": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_128": 1,
+      "ns": 9,
+      "BCM2835_SPI_CLOCK_DIVIDER_64": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_32": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_16": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_8": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_4": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_2": 1,
+      "fastest": 1,
+      "BCM2835_SPI_CLOCK_DIVIDER_1": 1,
+      "same": 3,
+      "/65536": 1,
+      "BCM2835_BSC_C": 1,
+      "BCM2835_BSC_S": 1,
+      "BCM2835_BSC_DLEN": 1,
+      "BCM2835_BSC_A": 1,
+      "Slave": 1,
+      "BCM2835_BSC_FIFO": 1,
+      "BCM2835_BSC_DIV": 1,
+      "BCM2835_BSC_DEL": 1,
+      "Delay": 4,
+      "BCM2835_BSC_CLKT": 1,
+      "Stretch": 2,
+      "Timeout": 2,
+      "BCM2835_BSC_C_I2CEN": 1,
+      "BCM2835_BSC_C_INTR": 1,
+      "BCM2835_BSC_C_INTT": 1,
+      "BCM2835_BSC_C_INTD": 1,
+      "DONE": 2,
+      "BCM2835_BSC_C_ST": 1,
+      "Start": 4,
+      "new": 13,
+      "BCM2835_BSC_C_CLEAR_1": 1,
+      "BCM2835_BSC_C_CLEAR_2": 1,
+      "BCM2835_BSC_C_READ": 1,
+      "BCM2835_BSC_S_CLKT": 1,
+      "stretch": 1,
+      "timeout": 5,
+      "BCM2835_BSC_S_ERR": 1,
+      "ACK": 1,
+      "error": 8,
+      "BCM2835_BSC_S_RXF": 1,
+      "BCM2835_BSC_S_TXE": 1,
+      "TXE": 1,
+      "BCM2835_BSC_S_RXD": 1,
+      "BCM2835_BSC_S_TXD": 1,
+      "BCM2835_BSC_S_RXR": 1,
+      "BCM2835_BSC_S_TXW": 1,
+      "TXW": 1,
+      "writing": 2,
+      "BCM2835_BSC_S_DONE": 1,
+      "BCM2835_BSC_S_TA": 1,
+      "BCM2835_BSC_FIFO_SIZE": 1,
+      "size": 13,
+      "bcm2835I2CClockDivider": 3,
+      "BCM2835_I2C_CLOCK_DIVIDER_2500": 1,
+      "BCM2835_I2C_CLOCK_DIVIDER_626": 1,
+      "BCM2835_I2C_CLOCK_DIVIDER_150": 1,
+      "reset": 1,
+      "BCM2835_I2C_CLOCK_DIVIDER_148": 1,
+      "bcm2835I2CReasonCodes": 5,
+      "reason": 4,
+      "codes": 1,
+      "BCM2835_I2C_REASON_OK": 1,
+      "Success": 1,
+      "BCM2835_I2C_REASON_ERROR_NACK": 1,
+      "Received": 4,
+      "NACK": 1,
+      "BCM2835_I2C_REASON_ERROR_CLKT": 1,
+      "BCM2835_I2C_REASON_ERROR_DATA": 1,
+      "sent": 1,
+      "/": 16,
+      "BCM2835_ST_CS": 1,
+      "Control/Status": 1,
+      "BCM2835_ST_CLO": 1,
+      "Counter": 4,
+      "Lower": 2,
+      "BCM2835_ST_CHI": 1,
+      "Upper": 1,
+      "BCM2835_PWM_CONTROL": 1,
+      "BCM2835_PWM_STATUS": 1,
+      "BCM2835_PWM0_RANGE": 1,
+      "BCM2835_PWM0_DATA": 1,
+      "BCM2835_PWM1_RANGE": 1,
+      "BCM2835_PWM1_DATA": 1,
+      "BCM2835_PWMCLK_CNTL": 1,
+      "BCM2835_PWMCLK_DIV": 1,
+      "BCM2835_PWM1_MS_MODE": 1,
+      "Run": 4,
+      "MS": 2,
+      "BCM2835_PWM1_USEFIFO": 1,
+      "BCM2835_PWM1_REVPOLAR": 1,
+      "Reverse": 2,
+      "polarity": 3,
+      "BCM2835_PWM1_OFFSTATE": 1,
+      "Ouput": 2,
+      "BCM2835_PWM1_REPEATFF": 1,
+      "Repeat": 2,
+      "last": 6,
+      "empty": 2,
+      "BCM2835_PWM1_SERIAL": 1,
+      "serial": 2,
+      "BCM2835_PWM1_ENABLE": 1,
+      "Channel": 2,
+      "BCM2835_PWM0_MS_MODE": 1,
+      "BCM2835_PWM0_USEFIFO": 1,
+      "BCM2835_PWM0_REVPOLAR": 1,
+      "BCM2835_PWM0_OFFSTATE": 1,
+      "BCM2835_PWM0_REPEATFF": 1,
+      "BCM2835_PWM0_SERIAL": 1,
+      "BCM2835_PWM0_ENABLE": 1,
+      "x": 86,
+      "#endif": 110,
+      "#ifdef": 19,
+      "__cplusplus": 12,
+      "init": 2,
+      "Library": 1,
+      "management": 1,
+      "intialise": 1,
+      "Initialise": 1,
+      "opening": 1,
+      "getting": 1,
+      "internal": 47,
+      "device": 7,
+      "call": 4,
+      "successfully": 1,
+      "before": 7,
+      "bcm2835_set_debug": 2,
+      "fails": 1,
+      "returning": 1,
+      "result": 8,
+      "crashes": 1,
+      "failures.": 1,
+      "Prints": 1,
+      "messages": 1,
+      "stderr": 1,
+      "case": 34,
+      "errors.": 1,
+      "successful": 2,
+      "else": 58,
+      "int": 218,
+      "Close": 1,
+      "deallocating": 1,
+      "allocated": 2,
+      "closing": 3,
+      "Sets": 24,
+      "debug": 6,
+      "prevents": 1,
+      "makes": 1,
+      "print": 5,
+      "out": 5,
+      "what": 2,
+      "would": 2,
+      "do": 13,
+      "rather": 2,
+      "causes": 1,
+      "normal": 1,
+      "operation.": 2,
+      "Call": 2,
+      "param": 72,
+      "]": 292,
+      "level.": 3,
+      "uint8_t": 43,
+      "lowlevel": 2,
+      "provide": 1,
+      "generally": 1,
+      "Reads": 5,
+      "done": 3,
+      "twice": 3,
+      "therefore": 6,
+      "always": 3,
+      "safe": 4,
+      "precautions": 3,
+      "correct": 3,
+      "paddr": 10,
+      "from.": 6,
+      "etc.": 5,
+      "sa": 30,
+      "uint32_t*": 7,
+      "without": 3,
+      "within": 4,
+      "occurred": 2,
+      "since.": 2,
+      "bcm2835_peri_read_nb": 1,
+      "Writes": 2,
+      "write": 8,
+      "bcm2835_peri_write_nb": 1,
+      "Alters": 1,
+      "regsiter.": 1,
+      "valu": 1,
+      "alters": 1,
+      "deines": 1,
+      "according": 1,
+      "value.": 2,
+      "All": 1,
+      "unaffected.": 1,
+      "Use": 8,
+      "alter": 2,
+      "subset": 1,
+      "register.": 3,
+      "masked": 2,
+      "mask.": 1,
+      "Bitmask": 1,
+      "altered": 1,
+      "gpio": 1,
+      "interface.": 3,
+      "input": 12,
+      "output": 21,
+      "state.": 1,
+      "given": 16,
+      "configures": 1,
+      "RPI_GPIO_P1_*": 21,
+      "Mode": 1,
+      "BCM2835_GPIO_FSEL_*": 1,
+      "specified": 27,
+      "HIGH.": 2,
+      "bcm2835_gpio_write": 3,
+      "bcm2835_gpio_set": 1,
+      "LOW.": 5,
+      "bcm2835_gpio_clr": 1,
+      "first": 13,
+      "Mask": 6,
+      "affect.": 4,
+      "eg": 5,
+      "returns": 4,
+      "either": 4,
+      "Works": 1,
+      "whether": 4,
+      "output.": 1,
+      "bcm2835_gpio_lev": 1,
+      "Status.": 7,
+      "Tests": 1,
+      "detected": 7,
+      "requested": 1,
+      "flag": 3,
+      "bcm2835_gpio_set_eds": 2,
+      "status": 1,
+      "th": 1,
+      "true.": 2,
+      "bcm2835_gpio_eds": 1,
+      "effect": 3,
+      "clearing": 1,
+      "flag.": 1,
+      "afer": 1,
+      "seeing": 1,
+      "rising": 3,
+      "sets": 8,
+      "GPRENn": 2,
+      "synchronous": 2,
+      "detection.": 2,
+      "signal": 4,
+      "sampled": 6,
+      "looking": 2,
+      "pattern": 2,
+      "signal.": 2,
+      "suppressing": 2,
+      "glitches.": 2,
+      "Disable": 6,
+      "Asynchronous": 6,
+      "incoming": 2,
+      "As": 2,
+      "edges": 2,
+      "very": 2,
+      "short": 5,
+      "duration": 2,
+      "detected.": 2,
+      "bcm2835_gpio_pudclk": 3,
+      "resistor": 1,
+      "However": 3,
+      "convenient": 2,
+      "bcm2835_gpio_set_pud": 4,
+      "pud": 4,
+      "desired": 7,
+      "mode.": 4,
+      "One": 3,
+      "BCM2835_GPIO_PUD_*": 2,
+      "Clocks": 3,
+      "earlier": 1,
+      "remove": 2,
+      "group.": 2,
+      "BCM2835_PAD_GROUP_GPIO_*": 2,
+      "BCM2835_PAD_*": 2,
+      "bcm2835_gpio_set_pad": 1,
+      "Delays": 3,
+      "milliseconds.": 1,
+      "Uses": 4,
+      "CPU": 5,
+      "until": 1,
+      "up.": 1,
+      "mercy": 2,
+      "From": 2,
+      "interval": 4,
+      "req": 2,
+      "exact": 2,
+      "multiple": 2,
+      "granularity": 2,
+      "rounded": 2,
+      "next": 9,
+      "multiple.": 2,
+      "Furthermore": 2,
+      "sleep": 2,
+      "completes": 2,
+      "still": 3,
+      "becomes": 2,
+      "free": 4,
+      "once": 5,
+      "again": 2,
+      "execute": 3,
+      "thread.": 2,
+      "millis": 2,
+      "milliseconds": 1,
+      "unsigned": 22,
+      "microseconds.": 2,
+      "combination": 2,
+      "busy": 2,
+      "wait": 2,
+      "timers": 1,
+      "less": 1,
+      "microseconds": 6,
+      "Timer.": 1,
+      "RaspberryPi": 1,
+      "Your": 1,
+      "mileage": 1,
+      "vary.": 1,
+      "micros": 5,
+      "uint64_t": 8,
+      "required": 2,
+      "bcm2835_gpio_write_mask": 1,
+      "clocking": 1,
+      "spi": 1,
+      "let": 2,
+      "device.": 2,
+      "operations.": 4,
+      "Forces": 2,
+      "ALT0": 2,
+      "funcitons": 1,
+      "complete": 3,
+      "End": 2,
+      "returned": 5,
+      "INPUT": 2,
+      "behaviour.": 2,
+      "NOTE": 1,
+      "effect.": 1,
+      "SPI0.": 1,
+      "Defaults": 1,
+      "BCM2835_SPI_BIT_ORDER_*": 1,
+      "speed.": 2,
+      "BCM2835_SPI_CLOCK_DIVIDER_*": 1,
+      "bcm2835_spi_setClockDivider": 1,
+      "uint16_t": 2,
+      "polariy": 1,
+      "phase": 1,
+      "BCM2835_SPI_MODE*": 1,
+      "bcm2835_spi_transfer": 5,
+      "made": 1,
+      "selected": 13,
+      "during": 4,
+      "transfer.": 4,
+      "cs": 4,
+      "activate": 1,
+      "slave.": 7,
+      "BCM2835_SPI_CS*": 1,
+      "bcm2835_spi_chipSelect": 4,
+      "occurs": 1,
+      "currently": 12,
+      "active.": 1,
+      "transfers": 1,
+      "happening": 1,
+      "complement": 1,
+      "inactive": 1,
+      "affect": 1,
+      "active": 3,
+      "Whether": 1,
+      "bcm2835_spi_setChipSelectPolarity": 1,
+      "Transfers": 6,
+      "byte": 6,
+      "Asserts": 3,
+      "simultaneously": 3,
+      "clocks": 2,
+      "MISO.": 2,
+      "Returns": 2,
+      "polled": 2,
+      "Peripherls": 2,
+      "len": 15,
+      "slave": 8,
+      "placed": 1,
+      "rbuf.": 1,
+      "rbuf": 3,
+      "long": 15,
+      "tbuf": 4,
+      "Buffer": 10,
+      "send.": 5,
+      "put": 1,
+      "buffer": 9,
+      "Number": 8,
+      "send/received": 2,
+      "char*": 24,
+      "bcm2835_spi_transfernb.": 1,
+      "replaces": 1,
+      "transmitted": 1,
+      "buffer.": 1,
+      "buf": 14,
+      "replace": 1,
+      "contents": 3,
+      "eh": 2,
+      "bcm2835_spi_writenb": 1,
+      "i2c": 1,
+      "Philips": 1,
+      "bus/interface": 1,
+      "January": 1,
+      "SCL": 2,
+      "bcm2835_i2c_end": 3,
+      "bcm2835_i2c_begin": 1,
+      "address.": 2,
+      "addr": 2,
+      "bcm2835_i2c_setSlaveAddress": 4,
+      "BCM2835_I2C_CLOCK_DIVIDER_*": 1,
+      "bcm2835_i2c_setClockDivider": 2,
+      "converting": 1,
+      "baudrate": 4,
+      "parameter": 1,
+      "equivalent": 1,
+      "divider.": 1,
+      "standard": 2,
+      "khz": 1,
+      "corresponds": 1,
+      "its": 1,
+      "driver.": 1,
+      "Of": 1,
+      "course": 2,
+      "nothing": 1,
+      "driver": 1,
+      "const": 172,
+      "*": 183,
+      "receive.": 2,
+      "received.": 2,
+      "Allows": 2,
+      "slaves": 1,
+      "require": 3,
+      "repeated": 1,
+      "start": 12,
+      "prior": 1,
+      "stop": 1,
+      "set.": 1,
+      "popular": 1,
+      "MPL3115A2": 1,
+      "pressure": 1,
+      "temperature": 1,
+      "sensor.": 1,
+      "Note": 1,
+      "combined": 1,
+      "better": 1,
+      "choice.": 1,
+      "Will": 1,
+      "regaddr": 2,
+      "containing": 2,
+      "bcm2835_i2c_read_register_rs": 1,
+      "st": 1,
+      "delays": 1,
+      "Counter.": 1,
+      "bcm2835_st_read": 1,
+      "offset.": 1,
+      "offset_micros": 2,
+      "Offset": 1,
+      "bcm2835_st_delay": 1,
+      "@example": 5,
+      "blink.c": 1,
+      "Blinks": 1,
+      "off": 1,
+      "input.c": 1,
+      "event.c": 1,
+      "Shows": 3,
+      "how": 3,
+      "spi.c": 1,
+      "spin.c": 1,
+      "#pragma": 3,
+      "<string>": 4,
+      "<vector>": 4,
+      "<fstream>": 2,
+      "namespace": 38,
+      "std": 53,
+      "DEFAULT_DELIMITER": 1,
+      "CsvStreamer": 5,
+      "private": 16,
+      "ofstream": 1,
+      "File": 1,
+      "stream": 6,
+      "vector": 16,
+      "row_buffer": 1,
+      "stores": 3,
+      "row": 12,
+      "flushed/written": 1,
+      "fields": 4,
+      "columns": 2,
+      "rows": 3,
+      "records": 2,
+      "including": 2,
+      "delimiter": 2,
+      "Delimiter": 1,
+      "character": 10,
+      "comma": 2,
+      "string": 24,
+      "sanitize": 1,
+      "ready": 1,
+      "Empty": 1,
+      "CSV": 4,
+      "streamer...": 1,
+      "Same": 1,
+      "...": 1,
+      "Opens": 3,
+      "path/name": 3,
+      "Ensures": 1,
+      "closed": 1,
+      "saved": 1,
+      "delimiting": 1,
+      "add_field": 1,
+      "line": 11,
+      "adds": 1,
+      "field": 5,
+      "save_fields": 1,
+      "save": 1,
+      "writes": 2,
+      "append": 8,
+      "Appends": 5,
+      "quoted": 1,
+      "leading/trailing": 1,
+      "spaces": 3,
+      "trimmed": 1,
+      "bool": 111,
+      "Like": 1,
+      "specify": 1,
+      "trim": 2,
+      "keep": 1,
+      "float": 74,
+      "double": 25,
+      "writeln": 1,
+      "Flushes": 1,
+      "Saves": 1,
+      "closes": 1,
+      "field_count": 1,
+      "Gets": 2,
+      "row_count": 1,
+      "<QCoreApplication>": 1,
+      "<QString>": 1,
+      "<QVariantMap>": 2,
+      "static": 263,
+      "Env": 13,
+      "*env_instance": 1,
+      "NULL": 109,
+      "*Env": 1,
+      "instance": 4,
+      "env_instance": 3,
+      "QObject": 2,
+      "QCoreApplication": 1,
+      "parse": 3,
+      "**envp": 1,
+      "**env": 1,
+      "**": 2,
+      "QString": 20,
+      "envvar": 2,
+      "name": 25,
+      "indexOfEquals": 5,
+      "env": 3,
+      "envp": 4,
+      "*env": 1,
+      "envvar.indexOf": 1,
+      "continue": 2,
+      "envvar.left": 1,
+      "envvar.mid": 1,
+      "m_map.insert": 1,
+      "QVariantMap": 3,
+      "asVariantMap": 2,
+      "m_map": 2,
+      "ENV_H": 3,
+      "<QObject>": 1,
+      "Q_OBJECT": 1,
+      "*instance": 1,
+      "BOOST_ASIO_DETAIL_IMPL_EPOLL_REACTOR_IPP": 3,
+      "#if": 63,
+      "defined": 49,
+      "_MSC_VER": 7,
+      "&&": 29,
+      "<boost/asio/detail/config.hpp>": 1,
+      "BOOST_ASIO_HAS_EPOLL": 2,
+      "<cstddef>": 1,
+      "<sys/epoll.h>": 1,
+      "<boost/asio/detail/epoll_reactor.hpp>": 1,
+      "<boost/asio/detail/throw_error.hpp>": 1,
+      "<boost/asio/error.hpp>": 1,
+      "BOOST_ASIO_HAS_TIMERFD": 19,
+      "<boost/asio/detail/push_options.hpp>": 1,
+      "boost": 18,
+      "asio": 14,
+      "detail": 5,
+      "epoll_reactor": 40,
+      "io_service": 6,
+      "service_base": 1,
+      "<epoll_reactor>": 1,
+      "io_service_": 1,
+      "use_service": 1,
+      "<io_service_impl>": 1,
+      "mutex_": 13,
+      "interrupter_": 5,
+      "epoll_fd_": 20,
+      "do_epoll_create": 3,
+      "timer_fd_": 21,
+      "do_timerfd_create": 3,
+      "shutdown_": 10,
+      "epoll_event": 10,
+      "ev": 21,
+      "ev.events": 13,
+      "EPOLLIN": 8,
+      "EPOLLERR": 8,
+      "EPOLLET": 5,
+      "ev.data.ptr": 10,
+      "epoll_ctl": 12,
+      "EPOLL_CTL_ADD": 7,
+      "interrupter_.read_descriptor": 3,
+      "interrupter_.interrupt": 2,
+      "shutdown_service": 1,
+      "mutex": 16,
+      "scoped_lock": 16,
+      "lock": 5,
+      "lock.unlock": 1,
+      "op_queue": 6,
+      "<operation>": 6,
+      "ops": 10,
+      "descriptor_state*": 6,
+      "registered_descriptors_.first": 2,
+      "i": 106,
+      "max_ops": 6,
+      "ops.push": 5,
+      "op_queue_": 12,
+      "registered_descriptors_.free": 2,
+      "timer_queues_.get_all_timers": 1,
+      "io_service_.abandon_operations": 1,
+      "fork_service": 1,
+      "fork_event": 1,
+      "fork_ev": 2,
+      "fork_child": 1,
+      "interrupter_.recreate": 1,
+      "update_timeout": 2,
+      "descriptors_lock": 3,
+      "registered_descriptors_mutex_": 3,
+      "next_": 3,
+      "registered_events_": 8,
+      "descriptor_": 5,
+      "error_code": 4,
+      "ec": 6,
+      "errno": 10,
+      "get_system_category": 3,
+      "throw_error": 2,
+      "init_task": 1,
+      "io_service_.init_task": 1,
+      "register_descriptor": 1,
+      "socket_type": 7,
+      "descriptor": 15,
+      "per_descriptor_data": 8,
+      "descriptor_data": 60,
+      "allocate_descriptor_state": 3,
+      "descriptor_lock": 7,
+      "reactor_": 7,
+      "EPOLLHUP": 3,
+      "EPOLLPRI": 3,
+      "register_internal_descriptor": 1,
+      "op_type": 8,
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+      "global.isTunnelMan": 1,
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+      "holdItem": 1,
+      "kAttack": 2,
+      "checkAttack": 2,
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+      "checkAttackPressed": 1,
+      "kAttackReleased": 2,
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+      "xPrev": 1,
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+      "stunned": 3,
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+      "//////////////////////////////////////////": 2,
+      "colSolidLeft": 4,
+      "colSolidRight": 3,
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+      "isCollisionMoveableSolidLeft": 1,
+      "isCollisionMoveableSolidRight": 1,
+      "isCollisionLeft": 2,
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+      "isCollisionBottom": 1,
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+      "checkRun": 1,
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+      "approximatelyZero": 4,
+      "xVel": 24,
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+      "platformCharacterIs": 23,
+      "ON_GROUND": 18,
+      "DUCKING": 4,
+      "pushTimer": 3,
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+      "SS_IsSoundPlaying": 2,
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+      "playSound": 3,
+      "runAcc": 2,
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+      "instance_exists": 8,
+      "oCape": 2,
+      "oCape.open": 6,
+      "kJumped": 7,
+      "ladderTimer": 4,
+      "ladder": 5,
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+      "STANDING": 2,
+      "departLadderXVel": 2,
+      "departLadderYVel": 1,
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+      "jumpButtonReleased": 7,
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+      "IN_AIR": 5,
+      "gravityIntensity": 2,
+      "yVel": 20,
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+      "jumps": 3,
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+      "grav": 22,
+      "global.hasGloves": 3,
+      "hangCount": 14,
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+      "yVel*0.3": 1,
+      "oWeb": 2,
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+      "instance_place": 3,
+      "obj.life": 1,
+      "initialJumpAcc": 6,
+      "xVel/2": 3,
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+      "global.hasCape": 1,
+      "jetpackFuel": 2,
+      "fallTimer": 2,
+      "global.hasJordans": 1,
+      "yAccLimit": 2,
+      "global.hasSpringShoes": 1,
+      "global.sndJump": 1,
+      "jumpTimeTotal": 2,
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+      "character": 20,
+      "continue": 4,
+      "to": 62,
+      "jump": 1,
+      "jumpTime/jumpTimeTotal": 1,
+      "looking": 2,
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+      "out": 4,
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+      "little": 1,
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+      "sets": 1,
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+      "good": 1,
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+      "playerID": 1,
+      "player": 36,
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+      "otherPlayer": 1,
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+      "buffer": 1,
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+      "pluginsRequired": 2,
+      "usePlugins": 1,
+      "tcp_eof": 3,
+      "global.serverSocket": 10,
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+      "show_message": 7,
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+      "exit": 10,
+      "room": 1,
+      "DownloadRoom": 1,
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+      "vk_escape": 1,
+      "downloadingMap": 2,
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+      "downloadMapBytes": 2,
+      "buffer_size": 2,
+      "downloadMapBuffer": 6,
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+      "write_buffer_to_file": 1,
+      "downloadMapName": 3,
+      "buffer_destroy": 8,
+      "roomchange": 2,
+      "do": 1,
+      "switch": 9,
+      "read_ubyte": 10,
+      "case": 50,
+      "HELLO": 1,
+      "global.joinedServerName": 2,
+      "receivestring": 4,
+      "advertisedMapMd5": 1,
+      "receiveCompleteMessage": 1,
+      "global.tempBuffer": 3,
+      "string_pos": 20,
+      "Server": 3,
+      "sent": 7,
+      "illegal": 2,
+      "map": 47,
+      "This": 2,
+      "server": 10,
+      "requires": 1,
+      "following": 2,
+      "play": 2,
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+      "suggests": 1,
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+      "loading": 1,
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+      "Password.": 1,
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+      "timeLeft": 1,
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+      "window_get_showborder": 1,
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+      "window_set_fullscreen": 2,
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+      "isn": 1,
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+      "downloaded": 1,
+      "file": 2,
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+      "Kill": 1,
+      "log": 1,
+      "recordKillInLog": 1,
+      "victim.stats": 1,
+      "DEATHS": 1,
+      "WEAPON_KNIFE": 1,
+      "||": 16,
+      "WEAPON_BACKSTAB": 1,
+      "killer.stats": 8,
+      "STABS": 2,
+      "killer.roundStats": 8,
+      "POINTS": 10,
+      "victim.object.currentWeapon.object_index": 1,
+      "Medigun": 2,
+      "victim.object.currentWeapon.uberReady": 1,
+      "BONUS": 2,
+      "KILLS": 2,
+      "victim.object.intel": 1,
+      "DEFENSES": 2,
+      "recordEventInLog": 1,
+      "killer.team": 1,
+      "killer.name": 2,
+      "global.myself": 4,
+      "assistant.stats": 2,
+      "ASSISTS": 2,
+      "assistant.roundStats": 2,
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+      "instance_create": 20,
+      "victim.object.x": 3,
+      "victim.object.y": 3,
+      "Spectator": 1,
+      "Gibbing": 2,
+      "xoffset": 5,
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+      "view_xview": 3,
+      "view_yview": 3,
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+      "with": 47,
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+      "WEAPON_ROCKETLAUNCHER": 1,
+      "WEAPON_MINEGUN": 1,
+      "FRAG_BOX": 2,
+      "WEAPON_REFLECTED_STICKY": 1,
+      "WEAPON_REFLECTED_ROCKET": 1,
+      "FINISHED_OFF_GIB": 2,
+      "GENERATOR_EXPLOSION": 2,
+      "player.class": 15,
+      "CLASS_QUOTE": 3,
+      "global.gibLevel": 14,
+      "distance_to_point": 3,
+      "xsize/2": 2,
+      "ysize/2": 2,
+      "hasReward": 4,
+      "repeat": 7,
+      "createGib": 14,
+      "PumpkinGib": 1,
+      "hspeed": 14,
+      "vspeed": 13,
+      "random": 21,
+      "choose": 8,
+      "Gib": 1,
+      "player.team": 8,
+      "TEAM_BLUE": 6,
+      "BlueClump": 1,
+      "TEAM_RED": 8,
+      "RedClump": 1,
+      "blood": 2,
+      "BloodDrop": 1,
+      "blood.hspeed": 1,
+      "blood.vspeed": 1,
+      "blood.sprite_index": 1,
+      "PumpkinJuiceS": 1,
+      "//All": 1,
+      "Classes": 1,
+      "gib": 1,
+      "head": 1,
+      "hands": 2,
+      "feet": 1,
+      "Headgib": 1,
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+      "has": 2,
+      "specially": 1,
+      "colored": 1,
+      "CLASS_MEDIC": 2,
+      "Hand": 3,
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+      "gibs": 1,
+      "CLASS_PYRO": 2,
+      "Accesory": 5,
+      "CLASS_SOLDIER": 2,
+      "CLASS_ENGINEER": 3,
+      "CLASS_SNIPER": 3,
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+      "DeathSnd1": 1,
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+      "DeadGuy": 1,
+      "deadbody.sprite_index": 2,
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+      "deadbody.image_index": 2,
+      "CHARACTER_ANIMATION_DEAD": 1,
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+      "deadbody.image_xscale": 1,
+      "global.gg_birthday": 1,
+      "myHat": 2,
+      "PartyHat": 1,
+      "myHat.image_index": 2,
+      "victim.team": 2,
+      "global.xmas": 1,
+      "XmasHat": 1,
+      "Deathcam": 1,
+      "global.killCam": 3,
+      "KILL_BOX": 1,
+      "FINISHED_OFF": 5,
+      "DeathCam": 1,
+      "DeathCam.killedby": 1,
+      "DeathCam.name": 1,
+      "DeathCam.oldxview": 1,
+      "DeathCam.oldyview": 1,
+      "DeathCam.lastDamageSource": 1,
+      "DeathCam.team": 1,
+      "global.myself.team": 3,
+      "xr": 19,
+      "yr": 19,
+      "cloakAlpha": 1,
+      "team": 13,
+      "canCloak": 1,
+      "cloakAlpha/2": 1,
+      "invisible": 1,
+      "stabbing": 2,
+      "power": 1,
+      "currentWeapon.stab.alpha": 1,
+      "&&": 6,
+      "global.showHealthBar": 3,
+      "draw_set_alpha": 3,
+      "draw_healthbar": 1,
+      "hp*100/maxHp": 1,
+      "c_black": 1,
+      "c_red": 3,
+      "c_green": 1,
+      "mouse_x": 1,
+      "mouse_y": 1,
+      "<25)>": 1,
+      "cloak": 2,
+      "global": 8,
+      "myself": 2,
+      "draw_set_halign": 1,
+      "fa_center": 1,
+      "draw_set_valign": 1,
+      "fa_bottom": 1,
+      "team=": 1,
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+      "draw_text": 4,
+      "35": 1,
+      "showTeammateStats": 1,
+      "weapons": 3,
+      "50": 3,
+      "Superburst": 1,
+      "string": 13,
+      "currentWeapon": 2,
+      "uberCharge": 1,
+      "20": 1,
+      "Shotgun": 1,
+      "Nuts": 1,
+      "N": 1,
+      "Bolts": 1,
+      "nutsNBolts": 1,
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+      "ubercolour": 6,
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+      "SniperCrouchRedS": 1,
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+      "omnomnomnom": 2,
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+      "omnomnomnomOverlay": 2,
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+      "ubered": 7,
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+      "humiliated": 1,
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+      "animationImage": 9,
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+      "dir": 3,
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+      "sprite_get_number": 1,
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+      "dir*1": 2,
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+      "string_copy": 32,
+      "string_length": 25,
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+      "__http_construct_url": 2,
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+      "ds_map_find_first": 1,
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+      "socket_error": 1,
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+      "write_byte": 1,
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+      "REWARD_REQUEST": 1,
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+      "rewardCreateChallenge": 1,
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+      "CLIENT_SETTINGS": 2,
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+      "player.queueJump": 1,
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+      "global.startRoomX": 1,
+      "global.startRoomY": 1,
+      "global.endRoomX": 1,
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+      "sLush": 2,
+      "obj.invincible": 3,
+      "oBrick": 1,
+      "sBrick": 1,
+      "global.cityOfGold": 2,
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+      "oSpikes": 1,
+      "background_index": 1,
+      "bgTemple": 1,
+      "global.temp1": 1,
+      "global.gameStart": 3,
+      "scrLevelGen": 1,
+      "global.cemetary": 3,
+      "rand": 10,
+      "global.probCemetary": 1,
+      "oRoom": 1,
+      "scrRoomGen": 1,
+      "global.blackMarket": 3,
+      "scrRoomGenMarket": 1,
+      "scrRoomGen2": 1,
+      "global.yetiLair": 2,
+      "scrRoomGenYeti": 1,
+      "scrRoomGen3": 1,
+      "scrRoomGen4": 1,
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+      "global.noDarkLevel": 1,
+      "global.probDarkLevel": 1,
+      "oPlayer1.x": 2,
+      "oPlayer1.y": 2,
+      "oFlare": 1,
+      "global.genUdjatEye": 4,
+      "global.madeUdjatEye": 1,
+      "global.genMarketEntrance": 4,
+      "global.madeMarketEntrance": 1,
+      "////////////////////////////": 2,
+      "global.temp2": 1,
+      "isRoom": 3,
+      "scrEntityGen": 1,
+      "oEntrance": 1,
+      "global.customLevel": 1,
+      "oEntrance.x": 1,
+      "oEntrance.y": 1,
+      "global.snakePit": 1,
+      "global.alienCraft": 1,
+      "global.sacrificePit": 1,
+      "oPlayer1": 1,
+      "scrSetupWalls": 3,
+      "global.graphicsHigh": 1,
+      "tile_add": 4,
+      "bgExtrasLush": 1,
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+      "bgExtrasIce": 1,
+      "bgExtrasTemple": 1,
+      "bgExtras": 1,
+      "global.murderer": 1,
+      "global.thiefLevel": 1,
+      "isRealLevel": 1,
+      "oExit": 1,
+      "oShopkeeper": 1,
+      "obj.status": 1,
+      "oTreasure": 1,
+      "oWater": 1,
+      "sWaterTop": 1,
+      "sLavaTop": 1,
+      "scrCheckWaterTop": 1,
+      "global.temp3": 1
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+      "Transportation": 1,
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+      "that": 1,
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+      "dataPlantOne": 3,
+      "data.Ts": 6,
+      "dataAdapting": 3,
+      "dataPlantTwo": 3,
+      "guessPlantOne": 4,
+      "resultPlantOne": 1,
+      "find_structural_gains": 2,
+      "yh": 2,
+      "fit": 6,
+      "x0": 4,
+      "compare": 3,
+      "resultPlantOne.fit": 1,
+      "guessPlantTwo": 3,
+      "resultPlantTwo": 1,
+      "resultPlantTwo.fit": 1,
+      "kP1": 4,
+      "resultPlantOne.fit.par": 1,
+      "kP2": 3,
+      "resultPlantTwo.fit.par": 1,
+      "gainSlopeOffset": 6,
+      "eye": 9,
+      "this": 2,
+      "only": 7,
+      "uses": 1,
+      "tau": 1,
+      "through": 1,
+      "wfs": 1,
+      "true": 2,
+      "plantOneSlopeOffset": 3,
+      "plantTwoSlopeOffset": 3,
+      "mod": 3,
+      "idnlgrey": 1,
+      "pem": 1,
       "guess.plantOne": 3,
       "guess.plantTwo": 2,
       "plantNum.plantOne": 2,
@@ -24826,6 +40202,11 @@
       "identified": 1,
       "gains": 12,
       ".vaf": 1,
+      "Elements": 1,
+      "grid": 1,
+      "definition": 2,
+      "Dimensionless": 1,
+      "integrating": 1,
       "Choice": 2,
       "mass": 2,
       "parameter": 2,
@@ -24848,6 +40229,9 @@
       "energy": 8,
       "E_L1": 4,
       "Omega": 7,
+      "C_L1": 3,
+      "*E_L1": 1,
+      "Szebehely": 1,
       "E": 8,
       "Offset": 2,
       "Initial": 3,
@@ -24864,18 +40248,13 @@
       "*Omega": 5,
       "vx_0.": 2,
       "E_cin": 4,
-      "Transforming": 1,
-      "into": 1,
-      "Hamiltonian": 1,
-      "variables": 2,
-      "px_0": 2,
-      "py_0": 2,
       "x_T": 25,
       "y_T": 17,
-      "px_T": 4,
-      "py_T": 4,
+      "vx_T": 22,
+      "vy_T": 12,
       "filtro": 15,
       "E_T": 11,
+      "delta_E": 7,
       "a": 17,
       "matrix": 3,
       "numbers": 2,
@@ -24890,72 +40269,17 @@
       "tolerance": 2,
       "setting": 4,
       "energy_tol": 6,
-      "inf": 1,
-      "options": 14,
-      "odeset": 4,
-      "@cr3bp_jac": 1,
-      "Parallel": 2,
-      "equations": 2,
-      "motion": 2,
-      "isreal": 8,
-      "Check": 6,
-      "velocity": 2,
-      "positive": 2,
-      "Kinetic": 2,
-      "Y": 19,
-      "@fH": 1,
-      "Saving": 4,
-      "solutions": 2,
-      "final": 2,
-      "difference": 2,
-      "with": 2,
-      "EnergyH": 1,
-      "delta_E": 7,
-      "conservation": 2,
-      "position": 2,
-      "point": 14,
-      "interesting": 4,
-      "non": 2,
-      "sense": 2,
-      "bad": 4,
-      "t_integrazione": 3,
-      "t_integr": 1,
-      "Back": 1,
-      "vx_T": 22,
-      "vy_T": 12,
-      "dphi": 12,
-      "ftle": 10,
-      "Manual": 2,
-      "visualize": 2,
-      "Inf": 1,
-      "*log": 2,
-      "tempo": 4,
-      "integrare": 2,
-      ".2f": 5,
-      "calcolare": 2,
-      "var_": 2,
-      "_": 2,
-      "var_xvx_": 2,
-      "ode00": 2,
-      "_n": 2,
-      "_e": 1,
-      "_H": 1,
-      "save": 2,
-      "nome": 2,
-      "Elements": 1,
-      "grid": 1,
-      "definition": 2,
-      "Dimensionless": 1,
-      "integrating": 1,
-      "C_L1": 3,
-      "*E_L1": 1,
-      "Szebehely": 1,
       "Setting": 1,
+      "options": 14,
       "integrator": 2,
       "RelTol": 2,
       "AbsTol": 2,
       "From": 1,
       "Short": 1,
+      "odeset": 4,
+      "Parallel": 2,
+      "equations": 2,
+      "motion": 2,
       "h": 19,
       "waitbar": 6,
       "r1": 3,
@@ -24965,9 +40289,30 @@
       "y_0.": 2,
       "./": 1,
       "mu./": 1,
+      "isreal": 8,
+      "Check": 6,
+      "velocity": 2,
+      "positive": 2,
+      "Kinetic": 2,
+      "Y": 19,
       "@f_reg": 1,
+      "Saving": 4,
+      "solutions": 2,
+      "final": 2,
+      "difference": 2,
+      "with": 2,
+      "conservation": 2,
+      "position": 2,
+      "point": 14,
+      "interesting": 4,
+      "non": 2,
+      "sense": 2,
+      "bad": 4,
       "close": 4,
+      "t_integrazione": 3,
       "filtro_1": 12,
+      "dphi": 12,
+      "ftle": 10,
       "ftle_norm": 1,
       "ds_x": 1,
       "ds_vx": 1,
@@ -24991,7 +40336,38 @@
       "x2": 1,
       "*ds_x": 2,
       "*ds_vx": 2,
+      "Manual": 2,
+      "visualize": 2,
+      "*log": 2,
       "dphi*dphi": 1,
+      "tempo": 4,
+      "integrare": 2,
+      ".2f": 5,
+      "calcolare": 2,
+      "var_": 2,
+      "_": 2,
+      "var_xvx_": 2,
+      "ode00": 2,
+      "_n": 2,
+      "save": 2,
+      "nome": 2,
+      "Transforming": 1,
+      "into": 1,
+      "Hamiltonian": 1,
+      "variables": 2,
+      "px_0": 2,
+      "py_0": 2,
+      "px_T": 4,
+      "py_T": 4,
+      "inf": 1,
+      "@cr3bp_jac": 1,
+      "@fH": 1,
+      "EnergyH": 1,
+      "t_integr": 1,
+      "Back": 1,
+      "Inf": 1,
+      "_e": 1,
+      "_H": 1,
       "Range": 1,
       "E_0": 4,
       "C_L1/2": 1,
@@ -25620,6 +40996,2888 @@
       "//wiki.eclipse.org/index.php/Linux_Tools_Project/GDB_Tracepoint_Analysis/User_Guide": 1,
       "//wiki.eclipse.org/Linux_Tools_Project/GDB_Tracepoint_Analysis/User_Guide": 1
     },
+    "Mercury": {
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+      "check_hlds.type_util.": 2,
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+      "hlds.hlds_goal.": 2,
+      "hlds.hlds_llds.": 1,
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+      "hlds.hlds_pred.": 2,
+      "hlds.instmap.": 2,
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@@ -30496,10 +50774,10 @@
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       "filetypes_supported_set": 9,
       "True/False": 1,
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-      "ALSO": 3,
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@@ -30908,7 +51186,7 @@
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@@ -31033,7 +51311,7 @@
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@@ -31145,7 +51423,7 @@
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@@ -31180,7 +51458,7 @@
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@@ -31229,6 +51507,113 @@
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@@ -31241,7 +51626,6 @@
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@@ -31612,6 +51979,131 @@
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+      "controllerName": 7,
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+      "parts": 9,
+      "routePaths": 5,
+      "realClassName": 1,
+      "namespaceName": 1,
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+      "compiledPattern": 4,
+      "extracted": 4,
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+      "reversed": 4,
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+      "getHttpMethods": 1,
+      "setHostname": 1,
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+      "getHostname": 1,
+      "convert": 1,
+      "converter": 2,
+      "getConverters": 1
+    },
+    "Zimpl": {
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+      "maximize": 1,
+      "queens": 1,
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+      "forall": 1,
+      "do": 1,
+      "card": 2
     }
   },
   "language_tokens": {
     "ABAP": 1500,
     "Agda": 376,
+    "Alloy": 1143,
     "ApacheConf": 1449,
     "Apex": 4408,
     "AppleScript": 1862,
     "Arduino": 20,
     "AsciiDoc": 103,
+    "AspectJ": 324,
+    "Assembly": 21750,
+    "ATS": 4558,
     "AutoHotkey": 3,
     "Awk": 544,
     "BlitzBasic": 2065,
     "Bluespec": 1298,
     "Brightscript": 579,
-    "C": 58858,
+    "C": 59053,
+    "C#": 278,
+    "C++": 34739,
     "Ceylon": 50,
+    "Cirru": 244,
     "Clojure": 510,
     "COBOL": 90,
     "CoffeeScript": 2951,
-    "Common Lisp": 103,
+    "Common Lisp": 2186,
+    "Component Pascal": 825,
     "Coq": 18259,
     "Creole": 134,
+    "Crystal": 1506,
     "CSS": 43867,
     "Cuda": 290,
-    "Dart": 68,
+    "Dart": 74,
     "Diff": 16,
     "DM": 169,
+    "Dogescript": 30,
+    "E": 601,
+    "Eagle": 30089,
     "ECL": 281,
     "edn": 227,
     "Elm": 628,
     "Emacs Lisp": 1756,
     "Erlang": 2928,
     "fish": 636,
+    "Forth": 1516,
+    "Frege": 5564,
+    "Game Maker Language": 13310,
+    "GAMS": 363,
+    "GAP": 9944,
     "GAS": 133,
-    "GLSL": 3766,
-    "Gosu": 413,
-    "Groovy": 69,
+    "GLSL": 4033,
+    "Gnuplot": 1023,
+    "Gosu": 410,
+    "Grammatical Framework": 10607,
+    "Groovy": 93,
     "Groovy Server Pages": 91,
     "Haml": 4,
     "Handlebars": 69,
+    "Haskell": 302,
+    "HTML": 413,
+    "Hy": 155,
+    "IDL": 418,
     "Idris": 148,
+    "Inform 7": 75,
     "INI": 27,
     "Ioke": 2,
+    "Isabelle": 136,
     "Jade": 3,
     "Java": 8987,
-    "JavaScript": 76934,
+    "JavaScript": 76970,
     "JSON": 183,
+    "JSON5": 57,
+    "JSONiq": 151,
+    "JSONLD": 18,
     "Julia": 247,
+    "Kit": 6,
     "Kotlin": 155,
     "KRL": 25,
+    "Lasso": 9849,
+    "Latte": 759,
     "Less": 39,
     "LFE": 1711,
+    "Liquid": 633,
     "Literate Agda": 478,
     "Literate CoffeeScript": 275,
     "LiveScript": 123,
     "Logos": 93,
     "Logtalk": 36,
     "Lua": 724,
-    "M": 23373,
+    "M": 23615,
     "Makefile": 50,
     "Markdown": 1,
+    "Mask": 74,
+    "Mathematica": 1857,
     "Matlab": 11942,
     "Max": 714,
     "MediaWiki": 766,
+    "Mercury": 31096,
     "Monkey": 207,
+    "Moocode": 5234,
+    "MoonScript": 1718,
+    "MTML": 93,
     "Nemerle": 17,
     "NetLogo": 243,
     "Nginx": 179,
     "Nimrod": 1,
+    "Nix": 188,
     "NSIS": 725,
     "Nu": 116,
     "Objective-C": 26518,
+    "Objective-C++": 6021,
     "OCaml": 382,
     "Omgrofl": 57,
     "Opa": 28,
     "OpenCL": 144,
     "OpenEdge ABL": 762,
     "Org": 358,
-    "Oxygene": 555,
+    "Ox": 1006,
+    "Oxygene": 157,
+    "Pan": 130,
     "Parrot Assembly": 6,
     "Parrot Internal Representation": 5,
     "Pascal": 30,
-    "Perl": 17497,
+    "PAWN": 3263,
+    "Perl": 17979,
+    "Perl6": 372,
     "PHP": 20724,
+    "Pike": 1835,
+    "Pod": 658,
     "PogoScript": 250,
+    "PostScript": 107,
     "PowerShell": 12,
     "Processing": 74,
-    "Prolog": 4040,
+    "Prolog": 2420,
+    "Propeller Spin": 13519,
     "Protocol Buffer": 63,
-    "Python": 5715,
+    "PureScript": 1652,
+    "Python": 6587,
     "QMake": 119,
-    "R": 175,
+    "R": 1790,
     "Racket": 331,
     "Ragel in Ruby Host": 593,
     "RDoc": 279,
-    "C++": 21308,
-    "Forth": 1516,
-    "Lasso": 9849,
-    "MoonScript": 1718,
-    "Rebol": 11,
+    "Rebol": 533,
+    "Red": 816,
+    "RMarkdown": 19,
     "RobotFramework": 483,
     "Ruby": 3862,
     "Rust": 3566,
+    "SAS": 93,
     "Sass": 56,
-    "Scala": 420,
+    "Scala": 750,
     "Scaml": 4,
-    "Scheme": 3478,
+    "Scheme": 3515,
     "Scilab": 69,
     "SCSS": 39,
     "Shell": 3744,
+    "ShellSession": 233,
+    "Shen": 3472,
     "Slash": 187,
+    "Slim": 77,
+    "Smalltalk": 423,
+    "SourcePawn": 2080,
+    "SQL": 1485,
     "Squirrel": 130,
-    "Standard ML": 243,
-    "SuperCollider": 268,
+    "Standard ML": 6567,
+    "Stata": 3133,
+    "STON": 100,
+    "Stylus": 76,
+    "SuperCollider": 133,
+    "Swift": 1128,
+    "SystemVerilog": 541,
+    "Tcl": 1133,
     "Tea": 3,
-    "TeX": 1155,
+    "TeX": 2701,
     "Turing": 44,
     "TXL": 213,
     "TypeScript": 109,
     "UnrealScript": 2873,
+    "VCL": 545,
     "Verilog": 3778,
     "VHDL": 42,
     "VimL": 20,
-    "Visual Basic": 345,
+    "Visual Basic": 581,
     "Volt": 388,
     "wisp": 1363,
     "XC": 24,
-    "XML": 5622,
+    "XML": 7057,
+    "Xojo": 807,
     "XProc": 22,
     "XQuery": 801,
     "XSLT": 44,
     "Xtend": 399,
-    "YAML": 30
+    "YAML": 77,
+    "Zephir": 1085,
+    "Zimpl": 123
   },
   "languages": {
     "ABAP": 1,
     "Agda": 1,
+    "Alloy": 3,
     "ApacheConf": 3,
     "Apex": 6,
     "AppleScript": 7,
     "Arduino": 1,
     "AsciiDoc": 3,
+    "AspectJ": 2,
+    "Assembly": 4,
+    "ATS": 10,
     "AutoHotkey": 1,
     "Awk": 1,
     "BlitzBasic": 3,
     "Bluespec": 2,
     "Brightscript": 1,
-    "C": 26,
+    "C": 29,
+    "C#": 2,
+    "C++": 29,
     "Ceylon": 1,
+    "Cirru": 9,
     "Clojure": 7,
     "COBOL": 4,
     "CoffeeScript": 9,
-    "Common Lisp": 1,
+    "Common Lisp": 3,
+    "Component Pascal": 2,
     "Coq": 12,
     "Creole": 1,
+    "Crystal": 3,
     "CSS": 2,
     "Cuda": 2,
     "Dart": 1,
     "Diff": 1,
     "DM": 1,
+    "Dogescript": 1,
+    "E": 6,
+    "Eagle": 2,
     "ECL": 1,
     "edn": 1,
     "Elm": 3,
     "Emacs Lisp": 2,
     "Erlang": 5,
     "fish": 3,
+    "Forth": 7,
+    "Frege": 4,
+    "Game Maker Language": 13,
+    "GAMS": 1,
+    "GAP": 7,
     "GAS": 1,
-    "GLSL": 3,
-    "Gosu": 5,
-    "Groovy": 2,
+    "GLSL": 5,
+    "Gnuplot": 6,
+    "Gosu": 4,
+    "Grammatical Framework": 41,
+    "Groovy": 5,
     "Groovy Server Pages": 4,
     "Haml": 1,
     "Handlebars": 2,
+    "Haskell": 3,
+    "HTML": 2,
+    "Hy": 2,
+    "IDL": 4,
     "Idris": 1,
+    "Inform 7": 2,
     "INI": 2,
     "Ioke": 1,
+    "Isabelle": 1,
     "Jade": 1,
     "Java": 6,
-    "JavaScript": 20,
+    "JavaScript": 22,
     "JSON": 4,
+    "JSON5": 2,
+    "JSONiq": 2,
+    "JSONLD": 1,
     "Julia": 1,
+    "Kit": 1,
     "Kotlin": 1,
     "KRL": 1,
+    "Lasso": 4,
+    "Latte": 2,
     "Less": 1,
     "LFE": 4,
+    "Liquid": 2,
     "Literate Agda": 1,
     "Literate CoffeeScript": 1,
     "LiveScript": 1,
     "Logos": 1,
     "Logtalk": 1,
     "Lua": 3,
-    "M": 28,
+    "M": 29,
     "Makefile": 2,
     "Markdown": 1,
+    "Mask": 1,
+    "Mathematica": 6,
     "Matlab": 39,
     "Max": 3,
     "MediaWiki": 1,
+    "Mercury": 9,
     "Monkey": 1,
+    "Moocode": 3,
+    "MoonScript": 1,
+    "MTML": 1,
     "Nemerle": 1,
     "NetLogo": 1,
     "Nginx": 1,
     "Nimrod": 1,
+    "Nix": 1,
     "NSIS": 2,
     "Nu": 2,
     "Objective-C": 19,
+    "Objective-C++": 2,
     "OCaml": 2,
     "Omgrofl": 1,
     "Opa": 2,
     "OpenCL": 2,
     "OpenEdge ABL": 5,
     "Org": 1,
-    "Oxygene": 2,
+    "Ox": 3,
+    "Oxygene": 1,
+    "Pan": 1,
     "Parrot Assembly": 1,
     "Parrot Internal Representation": 1,
     "Pascal": 1,
-    "Perl": 14,
+    "PAWN": 1,
+    "Perl": 15,
+    "Perl6": 3,
     "PHP": 9,
+    "Pike": 2,
+    "Pod": 1,
     "PogoScript": 1,
+    "PostScript": 1,
     "PowerShell": 2,
     "Processing": 1,
-    "Prolog": 6,
+    "Prolog": 5,
+    "Propeller Spin": 10,
     "Protocol Buffer": 1,
-    "Python": 7,
+    "PureScript": 4,
+    "Python": 10,
     "QMake": 4,
-    "R": 2,
+    "R": 7,
     "Racket": 2,
     "Ragel in Ruby Host": 3,
     "RDoc": 1,
-    "C++": 19,
-    "Forth": 7,
-    "Lasso": 4,
-    "MoonScript": 1,
-    "Rebol": 1,
+    "Rebol": 6,
+    "Red": 2,
+    "RMarkdown": 1,
     "RobotFramework": 3,
     "Ruby": 17,
     "Rust": 1,
+    "SAS": 2,
     "Sass": 2,
-    "Scala": 3,
+    "Scala": 4,
     "Scaml": 1,
-    "Scheme": 1,
+    "Scheme": 2,
     "Scilab": 3,
     "SCSS": 1,
     "Shell": 37,
+    "ShellSession": 3,
+    "Shen": 3,
     "Slash": 1,
+    "Slim": 1,
+    "Smalltalk": 3,
+    "SourcePawn": 1,
+    "SQL": 5,
     "Squirrel": 1,
-    "Standard ML": 2,
-    "SuperCollider": 2,
+    "Standard ML": 5,
+    "Stata": 7,
+    "STON": 7,
+    "Stylus": 1,
+    "SuperCollider": 1,
+    "Swift": 43,
+    "SystemVerilog": 4,
+    "Tcl": 2,
     "Tea": 1,
-    "TeX": 1,
+    "TeX": 2,
     "Turing": 1,
     "TXL": 1,
     "TypeScript": 3,
     "UnrealScript": 2,
+    "VCL": 2,
     "Verilog": 13,
     "VHDL": 1,
     "VimL": 2,
-    "Visual Basic": 1,
+    "Visual Basic": 3,
     "Volt": 1,
     "wisp": 1,
     "XC": 1,
-    "XML": 3,
+    "XML": 13,
+    "Xojo": 6,
     "XProc": 1,
     "XQuery": 1,
     "XSLT": 1,
     "Xtend": 2,
-    "YAML": 1
+    "YAML": 2,
+    "Zephir": 5,
+    "Zimpl": 1
   },
-  "md5": "3b94c2e2a38e812cdf16b2e91e51695b"
+  "md5": "72caade4a1a1dc14e10dd5478a6a5978"
 }
\ No newline at end of file
diff --git a/lib/linguist/vendor.yml b/lib/linguist/vendor.yml
index 2bc71b72..4d8481e5 100644
--- a/lib/linguist/vendor.yml
+++ b/lib/linguist/vendor.yml
@@ -10,7 +10,7 @@
 ## Vendor Conventions ##
 
 # Caches
-- cache/
+- (^|/)cache/
 
 # Dependencies
 - ^[Dd]ependencies/
@@ -27,11 +27,18 @@
 # Node dependencies
 - node_modules/
 
+# Bower Components
+- bower_components/
+
 # Erlang bundles
 - ^rebar$
 
 # Bootstrap minified css and js
-- (^|/)bootstrap([^.]*)(\.min)\.(js|css)$
+- (^|/)bootstrap([^.]*)(\.min)?\.(js|css)$
+
+# Foundation css
+- foundation.min.css
+- foundation.css
 
 # Vendored dependencies
 - thirdparty/
@@ -40,6 +47,9 @@
 # Debian packaging
 - ^debian/
 
+# Haxelib projects often contain a neko bytecode file named run.n
+- run.n$
+
 ## Commonly Bundled JavaScript frameworks ##
 
 # jQuery
@@ -56,6 +66,9 @@
 - (^|/)controls\.js$
 - (^|/)dragdrop\.js$
 
+# Typescript definition files
+- (.*?)\.d\.ts$
+
 # MooTools
 - (^|/)mootools([^.]*)\d+\.\d+.\d+([^.]*)\.js$
 
@@ -82,6 +95,19 @@
 - (^|/)shCore\.js$
 - (^|/)shLegacy\.js$
 
+# AngularJS
+- (^|/)angular([^.]*)(\.min)?\.js$
+
+# D3.js
+- (^|\/)d3(\.v\d+)?([^.]*)(\.min)?\.js$
+
+# React
+- (^|/)react(-[^.]*)?(\.min)?\.js$
+
+# Modernizr
+- (^|/)modernizr\-\d\.\d+(\.\d+)?(\.min)?\.js$
+- (^|/)modernizr\.custom\.\d+\.js$
+
 ## Python ##
 
 # django
@@ -101,10 +127,18 @@
 # Sparkle
 - (^|/)Sparkle/
 
+## Groovy ##
+
+# Gradle
+- (^|/)gradlew$
+- (^|/)gradlew\.bat$
+- (^|/)gradle/wrapper/
+
 ## .NET ##
 
 # Visual Studio IntelliSense
 - -vsdoc\.js$
+- \.intellisense\.js$
 
 # jQuery validation plugin (MS bundles this with asp.net mvc)
 - (^|/)jquery([^.]*)\.validate(\.unobtrusive)?(\.min)?\.js$
@@ -114,7 +148,7 @@
 - (^|/)[Mm]icrosoft([Mm]vc)?([Aa]jax|[Vv]alidation)(\.debug)?\.js$
 
 # NuGet
-- ^[Pp]ackages/
+- ^[Pp]ackages\/.+\.\d+\/
 
 # ExtJS
 - (^|/)extjs/.*?\.js$
@@ -134,12 +168,16 @@
 - (^|/)extjs/src/
 - (^|/)extjs/welcome/
 
+# Html5shiv
+- (^|/)html5shiv(\.min)?\.js$
+
 # Samples folders
 - ^[Ss]amples/
 
 # LICENSE, README, git config files
 - ^COPYING$
 - LICENSE$
+- License$
 - gitattributes$
 - gitignore$
 - gitmodules$
@@ -158,3 +196,15 @@
 
 # .DS_Store's
 - .[Dd][Ss]_[Ss]tore$
+
+# Mercury --use-subdirs
+- Mercury/
+
+# R packages
+- ^vignettes/
+- ^inst/extdata/
+
+# Octicons
+- octicons.css
+- octicons.min.css
+- sprockets-octicons.scss
diff --git a/lib/linguist/version.rb b/lib/linguist/version.rb
new file mode 100644
index 00000000..6704b3fb
--- /dev/null
+++ b/lib/linguist/version.rb
@@ -0,0 +1,3 @@
+module Linguist
+  VERSION = "2.12.0"
+end
diff --git a/samples/ATS/CoYonedaLemma.dats b/samples/ATS/CoYonedaLemma.dats
new file mode 100644
index 00000000..aeac8bb1
--- /dev/null
+++ b/samples/ATS/CoYonedaLemma.dats
@@ -0,0 +1,110 @@
+(* ****** ****** *)
+//
+// HX-2014-01
+// CoYoneda Lemma:
+//
+(* ****** ****** *)
+//
+#include
+"share/atspre_staload.hats"
+//
+(* ****** ****** *)
+
+staload
+"libats/ML/SATS/basis.sats"
+staload
+"libats/ML/SATS/list0.sats"
+
+(* ****** ****** *)
+
+staload _ = "libats/ML/DATS/list0.dats"
+
+(* ****** ****** *)
+
+sortdef ftype = type -> type
+
+(* ****** ****** *)
+
+infixr (->) ->>
+typedef ->> (a:type, b:type) = a -<cloref1> b
+
+(* ****** ****** *)
+
+typedef
+functor(F:ftype) =
+  {a,b:type} (a ->> b) ->> F(a) ->> F(b)
+
+(* ****** ****** *)
+
+typedef
+list0 (a:type) = list0 (a)
+extern
+val functor_list0 : functor (list0)
+
+(* ****** ****** *)
+
+implement
+functor_list0{a,b}
+  (f) = lam xs => list0_map<a><b> (xs, f)
+
+(* ****** ****** *)
+
+datatype
+CoYoneda
+ (F:ftype, r:type) = {a:type} CoYoneda of (a ->> r, F(a))
+// end of [CoYoneda]
+
+(* ****** ****** *)
+//
+extern
+fun CoYoneda_phi
+  : {F:ftype}functor(F) -> {r:type} (F (r) ->> CoYoneda (F, r))
+extern
+fun CoYoneda_psi
+  : {F:ftype}functor(F) -> {r:type} (CoYoneda (F, r) ->> F (r))
+//
+(* ****** ****** *)
+
+implement
+CoYoneda_phi(ftor) = lam (fx) => CoYoneda (lam x => x, fx)
+implement
+CoYoneda_psi(ftor) = lam (CoYoneda(f, fx)) => ftor (f) (fx)
+
+(* ****** ****** *)
+
+datatype int0 = I of (int)
+datatype bool = True | False // boxed boolean
+
+(* ****** ****** *)
+//
+fun bool2string
+  (x:bool): string =
+(
+  case+ x of True() => "True" | False() => "False"
+)
+//
+implement
+fprint_val<bool> (out, x) = fprint (out, bool2string(x))
+//
+(* ****** ****** *)
+
+fun int2bool (i: int0): bool =
+  let val+I(i) = i in if i > 0 then True else False end
+
+(* ****** ****** *)
+
+val myintlist0 = g0ofg1($list{int0}((I)1, (I)0, (I)1, (I)0, (I)0))
+val myboolist0 = CoYoneda{list0,bool}{int0}(lam (i) => int2bool(i), myintlist0)
+val myboolist0 = CoYoneda_psi{list0}(functor_list0){bool}(myboolist0)
+
+(* ****** ****** *)
+
+val ((*void*)) = fprintln! (stdout_ref, "myboolist0 = ", myboolist0)
+
+(* ****** ****** *)
+
+implement main0 () = ()
+
+(* ****** ****** *)
+
+(* end of [CoYonedaLemma.dats] *)
diff --git a/samples/ATS/DiningPhil2.dats b/samples/ATS/DiningPhil2.dats
new file mode 100644
index 00000000..55c39654
--- /dev/null
+++ b/samples/ATS/DiningPhil2.dats
@@ -0,0 +1,178 @@
+(* ****** ****** *)
+//
+// HX-2013-11
+//
+// Implementing a variant of
+// the problem of Dining Philosophers
+//
+(* ****** ****** *)
+//
+#include
+"share/atspre_define.hats"
+#include
+"share/atspre_staload.hats"
+//
+(* ****** ****** *)
+
+staload
+UN = "prelude/SATS/unsafe.sats"
+
+(* ****** ****** *)
+
+staload "libc/SATS/stdlib.sats"
+staload "libc/SATS/unistd.sats"
+
+(* ****** ****** *)
+
+staload "{$LIBATSHWXI}/teaching/mythread/SATS/channel.sats"
+
+(* ****** ****** *)
+
+staload _ = "libats/DATS/deqarray.dats"
+staload _ = "{$LIBATSHWXI}/teaching/mythread/DATS/channel.dats"
+
+(* ****** ****** *)
+
+staload "./DiningPhil2.sats"
+
+(* ****** ****** *)
+
+implement phil_left (n) = n
+implement phil_right (n) = (n+1) \nmod NPHIL
+
+(* ****** ****** *)
+//
+extern
+fun randsleep (n: intGte(1)): void
+//
+implement
+randsleep (n) =
+  ignoret (sleep($UN.cast{uInt}(rand() mod n + 1)))
+// end of [randsleep]
+//
+(* ****** ****** *)
+
+implement
+phil_think (n) =
+{
+val () = println! ("phil_think(", n, ") starts")
+val () = randsleep (6)
+val () = println! ("phil_think(", n, ") finishes")
+}
+
+(* ****** ****** *)
+
+implement
+phil_dine (n, lf, rf) =
+{
+val () = println! ("phil_dine(", n, ") starts")
+val () = randsleep (3)
+val () = println! ("phil_dine(", n, ") finishes")
+}
+
+(* ****** ****** *)
+
+implement
+phil_loop (n) = let
+//
+val () = phil_think (n)
+//
+val nl = phil_left (n)
+val nr = phil_right (n)
+//
+val ch_lfork = fork_changet (nl)
+val ch_rfork = fork_changet (nr)
+//
+val lf = channel_takeout (ch_lfork)
+val () = println! ("phil_loop(", n, ") picks left fork")
+//
+val () = randsleep (2) // HX: try to actively induce deadlock
+//
+val rf = channel_takeout (ch_rfork)
+val () = println! ("phil_loop(", n, ") picks right fork")
+//
+val () = phil_dine (n, lf, rf)
+//
+val ch_forktray = forktray_changet ()
+val () = channel_insert (ch_forktray, lf)
+val () = channel_insert (ch_forktray, rf)
+//
+in
+  phil_loop (n)
+end // end of [phil_loop]
+
+(* ****** ****** *)
+
+implement
+cleaner_wash (f) =
+{
+val f = fork_get_num (f)
+val () = println! ("cleaner_wash(", f, ") starts")
+val () = randsleep (1)
+val () = println! ("cleaner_wash(", f, ") finishes")
+}
+
+(* ****** ****** *)
+
+implement
+cleaner_return (f) =
+{
+  val n = fork_get_num (f)
+  val ch = fork_changet (n)
+  val () = channel_insert (ch, f)
+}
+
+(* ****** ****** *)
+
+implement
+cleaner_loop () = let
+//
+val ch = forktray_changet ()
+val f0 = channel_takeout (ch)
+//
+val () = cleaner_wash (f0)
+val () = cleaner_return (f0)
+//
+in
+  cleaner_loop ()
+end // end of [cleaner_loop]
+
+(* ****** ****** *)
+
+dynload "DiningPhil2.sats"
+dynload "DiningPhil2_fork.dats"
+dynload "DiningPhil2_thread.dats"
+
+(* ****** ****** *)
+
+local
+//
+staload
+"{$LIBATSHWXI}/teaching/mythread/SATS/mythread.sats"
+//
+in (* in of [local] *)
+//
+val () = mythread_create_cloptr (llam () => phil_loop (0))
+val () = mythread_create_cloptr (llam () => phil_loop (1))
+val () = mythread_create_cloptr (llam () => phil_loop (2))
+val () = mythread_create_cloptr (llam () => phil_loop (3))
+val () = mythread_create_cloptr (llam () => phil_loop (4))
+//
+val () = mythread_create_cloptr (llam () => cleaner_loop ())
+//
+end // end of [local]
+
+(* ****** ****** *)
+
+implement
+main0 () =
+{
+//
+val () = println! ("DiningPhil2: starting")
+val ((*void*)) = while (true) ignoret (sleep(1))
+//
+} (* end of [main0] *)
+
+(* ****** ****** *)
+
+(* end of [DiningPhil2.dats] *)
diff --git a/samples/ATS/DiningPhil2.sats b/samples/ATS/DiningPhil2.sats
new file mode 100644
index 00000000..bc7e96be
--- /dev/null
+++ b/samples/ATS/DiningPhil2.sats
@@ -0,0 +1,71 @@
+(* ****** ****** *)
+//
+// HX-2013-11
+//
+// Implementing a variant of
+// the problem of Dining Philosophers
+//
+(* ****** ****** *)
+
+#include
+"share/atspre_define.hats"
+
+(* ****** ****** *)
+
+staload "{$LIBATSHWXI}/teaching/mythread/SATS/channel.sats"
+
+(* ****** ****** *)
+
+%{#
+#define NPHIL 5
+%} // end of [%{#]
+#define NPHIL 5
+
+(* ****** ****** *)
+
+typedef nphil = natLt(NPHIL)
+
+(* ****** ****** *)
+
+fun phil_left (n: nphil): nphil
+fun phil_right (n: nphil): nphil
+
+(* ****** ****** *)
+//
+fun phil_loop (n: nphil): void
+//
+(* ****** ****** *)
+
+fun cleaner_loop ((*void*)): void
+
+(* ****** ****** *)
+
+absvtype fork_vtype = ptr
+vtypedef fork = fork_vtype
+
+(* ****** ****** *)
+
+fun fork_get_num (!fork): nphil
+
+(* ****** ****** *)
+
+fun phil_dine
+  (n: nphil, lf: !fork, rf: !fork): void
+// end of [phil_dine]
+
+fun phil_think (n: nphil): void
+
+(* ****** ****** *)
+
+fun cleaner_wash (f: !fork): void
+fun cleaner_return (f: fork): void
+
+(* ****** ****** *)
+//
+fun fork_changet (n: nphil): channel(fork)
+//
+fun forktray_changet ((*void*)): channel(fork)
+//
+(* ****** ****** *)
+
+(* end of [DiningPhil2.sats] *)
diff --git a/samples/ATS/DiningPhil2_fork.dats b/samples/ATS/DiningPhil2_fork.dats
new file mode 100644
index 00000000..a6a8d4df
--- /dev/null
+++ b/samples/ATS/DiningPhil2_fork.dats
@@ -0,0 +1,89 @@
+(* ****** ****** *)
+//
+// HX-2013-11
+//
+// Implementing a variant of
+// the problem of Dining Philosophers
+//
+(* ****** ****** *)
+//
+#include
+"share/atspre_define.hats"
+#include
+"share/atspre_staload.hats"
+//
+(* ****** ****** *)
+
+staload
+UN = "prelude/SATS/unsafe.sats"
+
+(* ****** ****** *)
+
+staload "{$LIBATSHWXI}/teaching/mythread/SATS/channel.sats"
+
+(* ****** ****** *)
+
+staload _ = "libats/DATS/deqarray.dats"
+staload _ = "{$LIBATSHWXI}/teaching/mythread/DATS/channel.dats"
+
+(* ****** ****** *)
+
+staload "./DiningPhil2.sats"
+
+(* ****** ****** *)
+
+datavtype fork = FORK of (nphil)
+
+(* ****** ****** *)
+
+assume fork_vtype = fork
+
+(* ****** ****** *)
+
+implement
+fork_get_num (f) = let val FORK(n) = f in n end
+
+(* ****** ****** *)
+
+local
+
+val
+the_forkarray = let
+//
+typedef t = channel(fork)
+//
+implement
+array_tabulate$fopr<t>
+  (n) = ch where
+{
+  val n = $UN.cast{nphil}(n)
+  val ch = channel_create_exn<fork> (i2sz(2))
+  val () = channel_insert (ch, FORK (n))
+}
+//
+in
+  arrayref_tabulate<t> (i2sz(NPHIL))
+end // end of [val]
+
+in (* in of [local] *)
+
+implement fork_changet (n) = the_forkarray[n]
+
+end // end of [local]
+
+(* ****** ****** *)
+
+local
+
+val the_forktray =
+  channel_create_exn<fork> (i2sz(NPHIL+1))
+
+in (* in of [local] *)
+
+implement forktray_changet () = the_forktray
+
+end // end of [local]
+
+(* ****** ****** *)
+
+(* end of [DiningPhil2_fork.dats] *)
diff --git a/samples/ATS/DiningPhil2_thread.dats b/samples/ATS/DiningPhil2_thread.dats
new file mode 100644
index 00000000..be73840b
--- /dev/null
+++ b/samples/ATS/DiningPhil2_thread.dats
@@ -0,0 +1,43 @@
+(* ****** ****** *)
+//
+// HX-2013-11
+//
+// Implementing a variant of
+// the problem of Dining Philosophers
+//
+(* ****** ****** *)
+//
+#include "share/atspre_define.hats"
+#include "share/atspre_staload.hats"
+//
+(* ****** ****** *)
+
+staload "{$LIBATSHWXI}/teaching/mythread/SATS/mythread.sats"
+
+(* ****** ****** *)
+
+local
+//
+#include "{$LIBATSHWXI}/teaching/mythread/DATS/mythread.dats"
+//
+in (* in of [local] *)
+//
+// HX: it is intentionally left to be empty
+//
+end // end of [local]
+
+(* ****** ****** *)
+
+local
+//
+#include "{$LIBATSHWXI}/teaching/mythread/DATS/mythread_posix.dats"
+//
+in (* in of [local] *)
+//
+// HX: it is intentionally left to be empty
+//
+end // end of [local]
+
+(* ****** ****** *)
+
+(* end of [DiningPhil2_thread.dats] *)
diff --git a/samples/ATS/YonedaLemma.dats b/samples/ATS/YonedaLemma.dats
new file mode 100644
index 00000000..cd3c31e6
--- /dev/null
+++ b/samples/ATS/YonedaLemma.dats
@@ -0,0 +1,178 @@
+(* ****** ****** *)
+//
+// HX-2014-01
+// Yoneda Lemma:
+// The hardest "trivial" theorem :)
+//
+(* ****** ****** *)
+//
+#include
+"share/atspre_staload.hats"
+//
+(* ****** ****** *)
+
+staload
+"libats/ML/SATS/basis.sats"
+staload
+"libats/ML/SATS/list0.sats"
+staload
+"libats/ML/SATS/option0.sats"
+
+(* ****** ****** *)
+
+staload _ = "libats/ML/DATS/list0.dats"
+staload _ = "libats/ML/DATS/option0.dats"
+
+(* ****** ****** *)
+
+sortdef ftype = type -> type
+
+(* ****** ****** *)
+
+infixr (->) ->>
+typedef ->> (a:type, b:type) = a -<cloref1> b
+
+(* ****** ****** *)
+
+typedef
+functor(F:ftype) =
+  {a,b:type} (a ->> b) ->> F(a) ->> F(b)
+
+(* ****** ****** *)
+
+typedef
+list0 (a:type) = list0 (a)
+extern
+val functor_list0 : functor (list0)
+
+(* ****** ****** *)
+
+implement
+functor_list0{a,b}
+  (f) = lam xs => list0_map<a><b> (xs, f)
+
+(* ****** ****** *)
+
+typedef
+option0 (a:type) = option0 (a)  
+extern
+val functor_option0 : functor (option0)
+  
+(* ****** ****** *)
+
+implement
+functor_option0{a,b}
+  (f) = lam opt => option0_map<a><b> (opt, f)
+
+(* ****** ****** *)
+
+extern
+val functor_homres
+  : {c:type} functor (lam(r:type) => c ->> r)
+
+(* ****** ****** *)
+
+implement
+functor_homres{c}{a,b} (f) = lam (r) => lam (x) => f (r(x))
+
+(* ****** ****** *)
+//
+extern
+fun Yoneda_phi : {F:ftype}functor(F) ->
+  {a:type}F(a) ->> ({r:type}(a ->> r) ->> F(r))
+extern
+fun Yoneda_psi : {F:ftype}functor(F) ->
+  {a:type}({r:type}(a ->> r) ->> F(r)) ->> F(a)
+//
+(* ****** ****** *)
+//
+implement
+Yoneda_phi
+  (ftor) = lam(fx) => lam (m) => ftor(m)(fx)
+//
+implement
+Yoneda_psi (ftor) = lam(mf) => mf(lam x => x)
+//
+(* ****** ****** *)
+
+(*
+
+(* ****** ****** *)
+//
+// HX-2014-01-05:
+// Another version based on Natural Transformation
+//
+(* ****** ****** *)
+
+typedef
+natrans(F:ftype, G:ftype) = {x:type} (F(x) ->> G(x))
+
+(* ****** ****** *)
+//
+extern
+fun Yoneda_phi_nat : {F:ftype}functor(F) ->
+  {a:type} F(a) ->> natrans(lam (r:type) => (a ->> r), F)
+extern
+fun Yoneda_psi_nat : {F:ftype}functor(F) ->
+  {a:type} natrans(lam (r:type) => (a ->> r), F) ->> F(a)
+//
+(* ****** ****** *)
+//
+implement
+Yoneda_phi_nat
+  (ftor) = lam(fx) => lam (m) => ftor(m)(fx)
+//
+implement
+Yoneda_psi_nat (ftor) = lam(mf) => mf(lam x => x)
+//
+(* ****** ****** *)
+
+*)
+
+(* ****** ****** *)
+
+datatype bool = True | False // boxed boolean
+
+(* ****** ****** *)
+//
+fun bool2string
+  (x:bool): string =
+(
+  case+ x of True() => "True" | False() => "False"
+)
+//
+implement
+fprint_val<bool> (out, x) = fprint (out, bool2string(x))
+//
+(* ****** ****** *)
+//
+val myboolist0 =
+  $list_t{bool}(True, False, True, False, False)
+val myboolist0 = g0ofg1_list (myboolist0)
+//
+(* ****** ****** *)
+//
+extern
+val Yoneda_bool_list0 : {r:type} (bool ->> r) ->> list0(r)
+//
+implement
+Yoneda_bool_list0 =
+  Yoneda_phi(functor_list0){bool}(myboolist0)
+//
+(* ****** ****** *)
+//
+val myboolist1 =
+  Yoneda_psi(functor_list0){bool}(Yoneda_bool_list0)
+//
+(* ****** ****** *)
+
+val () = fprintln! (stdout_ref, "myboolist0 = ", myboolist0)
+val () = fprintln! (stdout_ref, "myboolist1 = ", myboolist1)
+
+(* ****** ****** *)
+
+implement main0 () = ()
+
+(* ****** ****** *)
+
+(* end of [YonedaLemma.dats] *)
diff --git a/samples/ATS/linset.hats b/samples/ATS/linset.hats
new file mode 100644
index 00000000..29e44c44
--- /dev/null
+++ b/samples/ATS/linset.hats
@@ -0,0 +1,187 @@
+(***********************************************************************)
+(*                                                                     *)
+(*                         Applied Type System                         *)
+(*                                                                     *)
+(***********************************************************************)
+
+(*
+** ATS/Postiats - Unleashing the Potential of Types!
+** Copyright (C) 2011-2013 Hongwei Xi, ATS Trustful Software, Inc.
+** All rights reserved
+**
+** ATS is free software;  you can  redistribute it and/or modify it under
+** the terms of  the GNU GENERAL PUBLIC LICENSE (GPL) as published by the
+** Free Software Foundation; either version 3, or (at  your  option)  any
+** later version.
+** 
+** ATS is distributed in the hope that it will be useful, but WITHOUT ANY
+** WARRANTY; without  even  the  implied  warranty  of MERCHANTABILITY or
+** FITNESS FOR A PARTICULAR PURPOSE.  See the  GNU General Public License
+** for more details.
+** 
+** You  should  have  received  a  copy of the GNU General Public License
+** along  with  ATS;  see the  file COPYING.  If not, please write to the
+** Free Software Foundation,  51 Franklin Street, Fifth Floor, Boston, MA
+** 02110-1301, USA.
+*)
+
+(* ****** ****** *)
+
+(* Author: Hongwei Xi *)
+(* Authoremail: hwxi AT cs DOT bu DOT edu *)
+(* Start time: December, 2012 *)
+
+(* ****** ****** *)
+//
+// HX: shared by linset_listord (* ordered list *)
+// HX: shared by linset_avltree (* AVL-tree-based *)
+//
+(* ****** ****** *)
+//
+// HX-2013-02:
+// for sets of nonlinear elements
+//
+absvtype set_vtype (a:t@ype+) = ptr
+//
+(* ****** ****** *)
+
+vtypedef set (a:t0p) = set_vtype (a)
+
+(* ****** ****** *)
+
+fun{a:t0p}
+compare_elt_elt (x1: a, x2: a):<> int
+
+(* ****** ****** *)
+
+fun{} linset_nil{a:t0p} ():<> set(a)
+fun{} linset_make_nil{a:t0p} ():<> set(a)
+
+(* ****** ****** *)
+
+fun{a:t0p} linset_sing (x: a):<!wrt> set(a)
+fun{a:t0p} linset_make_sing (x: a):<!wrt> set(a)
+
+(* ****** ****** *)
+
+fun{a:t0p}
+linset_make_list (xs: List(INV(a))):<!wrt> set(a)
+
+(* ****** ****** *)
+
+fun{}
+linset_is_nil {a:t0p} (xs: !set(INV(a))):<> bool
+fun{}
+linset_isnot_nil {a:t0p} (xs: !set(INV(a))):<> bool
+
+(* ****** ****** *)
+
+fun{a:t0p} linset_size (!set(INV(a))): size_t
+
+(* ****** ****** *)
+
+fun{a:t0p}
+linset_is_member (xs: !set(INV(a)), x0: a):<> bool
+fun{a:t0p}
+linset_isnot_member (xs: !set(INV(a)), x0: a):<> bool
+
+(* ****** ****** *)
+
+fun{a:t0p}
+linset_copy (!set(INV(a))):<!wrt> set(a)
+fun{a:t0p}
+linset_free (xs: set(INV(a))):<!wrt> void
+
+(* ****** ****** *)
+//
+fun{a:t0p}
+linset_insert
+  (xs: &set(INV(a)) >> _, x0: a):<!wrt> bool
+//
+(* ****** ****** *)
+//
+fun{a:t0p}
+linset_takeout
+(
+  &set(INV(a)) >> _, a, res: &(a?) >> opt(a, b)
+) :<!wrt> #[b:bool] bool(b) // endfun
+fun{a:t0p}
+linset_takeout_opt (&set(INV(a)) >> _, a):<!wrt> Option_vt(a)
+//
+(* ****** ****** *)
+//
+fun{a:t0p}
+linset_remove
+  (xs: &set(INV(a)) >> _, x0: a):<!wrt> bool
+//
+(* ****** ****** *)
+//
+// HX: choosing an element in an unspecified manner
+//
+fun{a:t0p}
+linset_choose
+(
+  xs: !set(INV(a)), x: &a? >> opt (a, b)
+) :<!wrt> #[b:bool] bool(b)
+//
+fun{a:t0p}
+linset_choose_opt (xs: !set(INV(a))):<!wrt> Option_vt(a)
+//
+(* ****** ****** *)
+
+fun{a:t0p}
+linset_takeoutmax
+(
+  xs: &set(INV(a)) >> _, res: &a? >> opt(a, b)
+) :<!wrt> #[b:bool] bool (b)
+fun{a:t0p}
+linset_takeoutmax_opt (xs: &set(INV(a)) >> _):<!wrt> Option_vt(a)
+
+(* ****** ****** *)
+
+fun{a:t0p}
+linset_takeoutmin
+(
+  xs: &set(INV(a)) >> _, res: &a? >> opt(a, b)
+) :<!wrt> #[b:bool] bool (b)
+fun{a:t0p}
+linset_takeoutmin_opt (xs: &set(INV(a)) >> _):<!wrt> Option_vt(a)
+
+(* ****** ****** *)
+//
+fun{}
+fprint_linset$sep (FILEref): void // ", "
+//
+fun{a:t0p}
+fprint_linset (out: FILEref, xs: !set(INV(a))): void
+//
+overload fprint with fprint_linset
+//
+(* ****** ****** *)
+//
+fun{
+a:t0p}{env:vt0p
+} linset_foreach$fwork
+  (x: a, env: &(env) >> _): void
+//
+fun{a:t0p}
+linset_foreach (set: !set(INV(a))): void
+fun{
+a:t0p}{env:vt0p
+} linset_foreach_env
+  (set: !set(INV(a)), env: &(env) >> _): void
+// end of [linset_foreach_env]
+//
+(* ****** ****** *)
+
+fun{a:t0p}
+linset_listize (xs: set(INV(a))): List0_vt (a)
+
+(* ****** ****** *)
+
+fun{a:t0p}
+linset_listize1 (xs: !set(INV(a))): List0_vt (a)
+
+(* ****** ****** *)
+
+(* end of [linset.hats] *)
diff --git a/samples/ATS/linset_listord.dats b/samples/ATS/linset_listord.dats
new file mode 100644
index 00000000..eb7dd642
--- /dev/null
+++ b/samples/ATS/linset_listord.dats
@@ -0,0 +1,504 @@
+(***********************************************************************)
+(*                                                                     *)
+(*                         Applied Type System                         *)
+(*                                                                     *)
+(***********************************************************************)
+
+(*
+** ATS/Postiats - Unleashing the Potential of Types!
+** Copyright (C) 2011-2013 Hongwei Xi, ATS Trustful Software, Inc.
+** All rights reserved
+**
+** ATS is free software;  you can  redistribute it and/or modify it under
+** the terms of  the GNU GENERAL PUBLIC LICENSE (GPL) as published by the
+** Free Software Foundation; either version 3, or (at  your  option)  any
+** later version.
+** 
+** ATS is distributed in the hope that it will be useful, but WITHOUT ANY
+** WARRANTY; without  even  the  implied  warranty  of MERCHANTABILITY or
+** FITNESS FOR A PARTICULAR PURPOSE.  See the  GNU General Public License
+** for more details.
+** 
+** You  should  have  received  a  copy of the GNU General Public License
+** along  with  ATS;  see the  file COPYING.  If not, please write to the
+** Free Software Foundation,  51 Franklin Street, Fifth Floor, Boston, MA
+** 02110-1301, USA.
+*)
+
+(* ****** ****** *)
+
+(* Author: Hongwei Xi *)
+(* Authoremail: hwxi AT cs DOT bu DOT edu *)
+(* Start time: February, 2013 *)
+
+(* ****** ****** *)
+//
+// HX-2013-08:
+// a set is represented as a sorted list in descending order;
+// note that descending order is chosen to faciliate set comparison
+//
+(* ****** ****** *)
+
+staload
+UN = "prelude/SATS/unsafe.sats"
+
+(* ****** ****** *)
+
+staload "libats/SATS/linset_listord.sats"
+
+(* ****** ****** *)
+
+#include "./SHARE/linset.hats" // code reuse
+#include "./SHARE/linset_node.hats" // code reuse
+
+(* ****** ****** *)
+
+assume
+set_vtype (elt:t@ype) = List0_vt (elt)
+
+(* ****** ****** *)
+
+implement{}
+linset_nil () = list_vt_nil ()
+implement{}
+linset_make_nil () = list_vt_nil ()
+
+(* ****** ****** *)
+
+implement
+{a}(*tmp*)
+linset_sing
+  (x) = list_vt_cons{a}(x, list_vt_nil)
+// end of [linset_sing]
+implement{a}
+linset_make_sing
+  (x) = list_vt_cons{a}(x, list_vt_nil)
+// end of [linset_make_sing]
+
+(* ****** ****** *)
+
+implement{}
+linset_is_nil (xs) = list_vt_is_nil (xs)
+implement{}
+linset_isnot_nil (xs) = list_vt_is_cons (xs)
+
+(* ****** ****** *)
+
+implement{a}
+linset_size (xs) =
+  let val n = list_vt_length(xs) in i2sz(n) end
+// end of [linset_size]
+
+(* ****** ****** *)
+
+implement{a}
+linset_is_member
+  (xs, x0) = let
+//
+fun aux
+  {n:nat} .<n>.
+(
+  xs: !list_vt (a, n)
+) :<> bool = let
+in
+//
+case+ xs of
+| list_vt_cons (x, xs) => let
+    val sgn = compare_elt_elt<a> (x0, x) in
+    if sgn > 0 then false else (if sgn < 0 then aux (xs) else true)
+  end // end of [list_vt_cons]
+| list_vt_nil ((*void*)) => false
+//
+end // end of [aux]
+//
+in
+  aux (xs)
+end // end of [linset_is_member]
+
+(* ****** ****** *)
+
+implement{a}
+linset_copy (xs) = list_vt_copy<a> (xs)
+implement{a}
+linset_free (xs) = list_vt_free<a> (xs)
+
+(* ****** ****** *)
+
+implement{a}
+linset_insert
+  (xs, x0) = let
+//
+fun
+mynode_cons
+  {n:nat} .<>.
+(
+  nx: mynode1 (a), xs: list_vt (a, n)
+) : list_vt (a, n+1) = let
+//
+val xs1 =
+$UN.castvwtp0{List1_vt(a)}(nx)
+val+@list_vt_cons (_, xs2) = xs1
+prval () = $UN.cast2void (xs2); val () = (xs2 := xs)
+//
+in
+  fold@ (xs1); xs1
+end // end of [mynode_cons]
+//
+fun ins
+  {n:nat} .<n>. // tail-recursive
+(
+  xs: &list_vt (a, n) >> list_vt (a, n1)
+) : #[n1:nat | n <= n1; n1 <= n+1] bool =
+(
+case+ xs of
+| @list_vt_cons
+    (x, xs1) => let
+    val sgn =
+      compare_elt_elt<a> (x0, x)
+    // end of [val]
+  in
+    if sgn > 0 then let
+      prval () = fold@ (xs)
+      val nx = mynode_make_elt<a> (x0)
+      val ((*void*)) = xs := mynode_cons (nx, xs)
+    in
+      false
+    end else if sgn < 0 then let
+      val ans = ins (xs1)
+      prval () = fold@ (xs)
+    in
+      ans
+    end else let // [x0] is found
+      prval () = fold@ (xs)
+    in
+      true (* [x0] in [xs] *)
+    end (* end of [if] *)
+  end // end of [list_vt_cons]
+| list_vt_nil () => let
+    val nx = mynode_make_elt<a> (x0)
+    val ((*void*)) = xs := mynode_cons (nx, xs)
+  in
+    false
+  end // end of [list_vt_nil]
+) (* end of [ins] *)
+//
+in
+  $effmask_all (ins (xs))
+end // end of [linset_insert]
+
+(* ****** ****** *)
+
+(*
+//
+HX-2013-08:
+[linset_remove] moved up
+//
+implement{a}
+linset_remove
+  (xs, x0) = let
+//
+fun rem
+  {n:nat} .<n>. // tail-recursive
+(
+  xs: &list_vt (a, n) >> list_vt (a, n1)
+) : #[n1:nat | n1 <= n; n <= n1+1] bool =
+(
+case+ xs of
+| @list_vt_cons
+    (x, xs1) => let
+    val sgn =
+      compare_elt_elt<a> (x0, x)
+    // end of [val]
+  in
+    if sgn > 0 then let
+      prval () = fold@ (xs)
+    in
+      false
+    end else if sgn < 0 then let
+      val ans = rem (xs1)
+      prval () = fold@ (xs)
+    in
+      ans
+    end else let // x0 = x
+      val xs1_ = xs1
+      val ((*void*)) = free@{a}{0}(xs)
+      val () = xs := xs1_
+    in
+      true // [x0] in [xs]
+    end (* end of [if] *)
+  end // end of [list_vt_cons]
+| list_vt_nil () => false
+) (* end of [rem] *)
+//
+in
+  $effmask_all (rem (xs))
+end // end of [linset_remove]
+*)
+
+(* ****** ****** *)
+(*
+** By Brandon Barker
+*)
+implement
+{a}(*tmp*)
+linset_choose
+  (xs, x0) = let
+in
+//
+case+ xs of
+| list_vt_cons
+    (x, xs1) => let
+    val () = x0 := x
+    prval () = opt_some{a}(x0)
+  in
+    true
+  end // end of [list_vt_cons]
+| list_vt_nil () => let
+    prval () = opt_none{a}(x0)
+  in
+    false
+  end // end of [list_vt_nil]
+//
+end // end of [linset_choose]
+
+(* ****** ****** *)
+
+implement
+{a}{env}
+linset_foreach_env (xs, env) = let
+//
+implement
+list_vt_foreach$fwork<a><env>
+  (x, env) = linset_foreach$fwork<a><env> (x, env)
+//
+in
+  list_vt_foreach_env<a><env> (xs, env)
+end // end of [linset_foreach_env]
+
+(* ****** ****** *)
+
+implement{a}
+linset_listize (xs) = xs
+
+(* ****** ****** *)
+
+implement{a}
+linset_listize1 (xs) = list_vt_copy (xs)
+
+(* ****** ****** *)
+//
+// HX: functions for processing mynodes
+//
+(* ****** ****** *)
+
+implement{
+} mynode_null{a} () =
+  $UN.castvwtp0{mynode(a,null)}(the_null_ptr)
+// end of [mynode_null]
+
+(* ****** ****** *)
+
+implement
+{a}(*tmp*)
+mynode_make_elt
+  (x) = let
+//
+val nx = list_vt_cons{a}{0}(x, _ )
+//
+in
+  $UN.castvwtp0{mynode1(a)}(nx)
+end // end of [mynode_make_elt]
+
+(* ****** ****** *)
+
+implement{
+} mynode_free
+  {a}(nx) = () where {
+val nx =
+  $UN.castvwtp0{List1_vt(a)}(nx)
+//
+val+~list_vt_cons (_, nx2) = nx
+//
+prval ((*void*)) = $UN.cast2void (nx2)
+//
+} (* end of [mynode_free] *)
+
+(* ****** ****** *)
+
+implement
+{a}(*tmp*)
+mynode_get_elt
+  (nx) = (x) where {
+//
+val nx1 =
+  $UN.castvwtp1{List1_vt(a)}(nx)
+//
+val+list_vt_cons (x, _) = nx1
+//
+prval ((*void*)) = $UN.cast2void (nx1)
+//
+} (* end of [mynode_get_elt] *)
+
+(* ****** ****** *)
+
+implement
+{a}(*tmp*)
+mynode_set_elt
+  {l} (nx, x0) =
+{
+//
+val nx1 =
+  $UN.castvwtp1{List1_vt(a)}(nx)
+//
+val+@list_vt_cons (x, _) = nx1
+//
+val () = x := x0
+//
+prval () = fold@ (nx1)
+prval () = $UN.cast2void (nx1)
+//
+prval () = __assert (nx) where
+{
+  extern praxi __assert (nx: !mynode(a?, l) >> mynode (a, l)): void
+} (* end of [prval] *)
+//
+} (* end of [mynode_set_elt] *)
+
+(* ****** ****** *)
+
+implement
+{a}(*tmp*)
+mynode_getfree_elt
+  (nx) = (x) where {
+//
+val nx =
+  $UN.castvwtp0{List1_vt(a)}(nx)
+//
+val+~list_vt_cons (x, nx2) = nx
+//
+prval ((*void*)) = $UN.cast2void (nx2)
+//
+} (* end of [mynode_getfree_elt] *)
+
+(* ****** ****** *)
+
+(*
+fun{a:t0p}
+linset_takeout_ngc
+  (set: &set(INV(a)) >> _, x0: a):<!wrt> mynode0 (a)
+// end of [linset_takeout_ngc]
+*)
+implement
+{a}(*tmp*)
+linset_takeout_ngc
+  (set, x0) = let
+//
+fun takeout
+(
+  xs: &List0_vt (a) >> _
+) : mynode0(a) = let
+in
+//
+case+ xs of
+| @list_vt_cons
+    (x, xs1) => let
+    prval pf_x = view@x
+    prval pf_xs1 = view@xs1
+    val sgn =
+      compare_elt_elt<a> (x0, x)
+    // end of [val]
+  in
+    if sgn > 0 then let
+      prval () = fold@ (xs)
+    in
+      mynode_null{a}((*void*))
+    end else if sgn < 0 then let
+      val res = takeout (xs1)
+      prval ((*void*)) = fold@ (xs)
+    in
+      res
+    end else let // x0 = x
+      val xs1_ = xs1
+      val res = $UN.castvwtp0{mynode1(a)}((pf_x, pf_xs1 | xs))
+      val () = xs := xs1_
+    in
+      res // [x0] in [xs]
+    end (* end of [if] *)
+  end // end of [list_vt_cons]
+| list_vt_nil () => mynode_null{a}((*void*))
+//
+end (* end of [takeout] *)
+//
+in
+  $effmask_all (takeout (set))
+end // end of [linset_takeout_ngc]
+
+(* ****** ****** *)
+
+implement
+{a}(*tmp*)
+linset_takeoutmax_ngc
+  (xs) = let
+in
+//
+case+ xs of
+| @list_vt_cons
+    (x, xs1) => let
+    prval pf_x = view@x
+    prval pf_xs1 = view@xs1
+    val xs_ = xs
+    val () = xs := xs1
+  in
+    $UN.castvwtp0{mynode1(a)}((pf_x, pf_xs1 | xs_))
+  end // end of [list_vt_cons]
+| @list_vt_nil () => let
+    prval () = fold@ (xs)
+  in
+    mynode_null{a}((*void*))
+  end // end of [list_vt_nil]
+//
+end // end of [linset_takeoutmax_ngc]
+
+(* ****** ****** *)
+
+implement
+{a}(*tmp*)
+linset_takeoutmin_ngc
+  (xs) = let
+//
+fun unsnoc
+  {n:pos} .<n>.
+(
+  xs: &list_vt (a, n) >> list_vt (a, n-1)
+) :<!wrt> mynode1 (a) = let
+//
+val+@list_vt_cons (x, xs1) = xs
+//
+prval pf_x = view@x and pf_xs1 = view@xs1
+//
+in
+//
+case+ xs1 of
+| list_vt_cons _ =>
+    let val res = unsnoc(xs1) in fold@xs; res end
+  // end of [list_vt_cons]
+| list_vt_nil () => let
+    val xs_ = xs
+    val () = xs := list_vt_nil{a}()
+  in
+    $UN.castvwtp0{mynode1(a)}((pf_x, pf_xs1 | xs_))
+  end // end of [list_vt_nil]
+//
+end // end of [unsnoc]
+//
+in
+//
+case+ xs of
+| list_vt_cons _ => unsnoc (xs)
+| list_vt_nil () => mynode_null{a}((*void*))
+//
+end // end of [linset_takeoutmin_ngc]
+
+(* ****** ****** *)
+
+(* end of [linset_listord.dats] *)
diff --git a/samples/ATS/linset_listord.sats b/samples/ATS/linset_listord.sats
new file mode 100644
index 00000000..468a534f
--- /dev/null
+++ b/samples/ATS/linset_listord.sats
@@ -0,0 +1,51 @@
+(***********************************************************************)
+(*                                                                     *)
+(*                         Applied Type System                         *)
+(*                                                                     *)
+(***********************************************************************)
+
+(*
+** ATS/Postiats - Unleashing the Potential of Types!
+** Copyright (C) 2011-2013 Hongwei Xi, ATS Trustful Software, Inc.
+** All rights reserved
+**
+** ATS is free software;  you can  redistribute it and/or modify it under
+** the terms of  the GNU GENERAL PUBLIC LICENSE (GPL) as published by the
+** Free Software Foundation; either version 3, or (at  your  option)  any
+** later version.
+** 
+** ATS is distributed in the hope that it will be useful, but WITHOUT ANY
+** WARRANTY; without  even  the  implied  warranty  of MERCHANTABILITY or
+** FITNESS FOR A PARTICULAR PURPOSE.  See the  GNU General Public License
+** for more details.
+** 
+** You  should  have  received  a  copy of the GNU General Public License
+** along  with  ATS;  see the  file COPYING.  If not, please write to the
+** Free Software Foundation,  51 Franklin Street, Fifth Floor, Boston, MA
+** 02110-1301, USA.
+*)
+
+(* ****** ****** *)
+//
+// Author: Hongwei Xi
+// Authoremail: hwxiATcsDOTbuDOTedu
+// Time: October, 2010
+//
+(* ****** ****** *)
+
+#define ATS_PACKNAME "ATSLIB.libats.linset_listord"
+#define ATS_STALOADFLAG 0 // no static loading at run-time
+
+(* ****** ****** *)
+
+#include "./SHARE/linset.hats"
+#include "./SHARE/linset_node.hats"
+
+(* ****** ****** *)
+
+castfn
+linset2list {a:t0p} (xs: set (INV(a))):<> List0_vt (a)
+
+(* ****** ****** *)
+
+(* end of [linset_listord.sats] *)
diff --git a/samples/ATS/main.atxt b/samples/ATS/main.atxt
new file mode 100644
index 00000000..3bba35f0
--- /dev/null
+++ b/samples/ATS/main.atxt
@@ -0,0 +1,215 @@
+%{
+#include "./../ATEXT/atextfun.hats"
+%}
+
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN"
+   "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+
+<head>
+<meta http-equiv="content-type" content="text/html; charset=UTF-8" />
+<title>EFFECTIVATS-DiningPhil2</title>
+#patscode_style()
+</head>
+
+<body>
+
+<h1>
+Effective ATS: Dining Philosophers
+</h1>
+
+In this article, I present an implementation of a slight variant of the
+famous problem of 5-Dining-Philosophers by Dijkstra that makes simple but
+convincing use of linear types.
+
+<h2>
+The Original Problem 
+</h2>
+
+There are five philosophers sitting around a table and there are also 5
+forks placed on the table such that each fork is located between the left
+hand of a philosopher and the right hand of another philosopher. Each
+philosopher does the following routine repeatedly: thinking and dining.  In
+order to dine, a philosopher needs to first acquire two forks: one located
+on his left-hand side and the other on his right-hand side. After
+finishing dining, a philosopher puts the two acquired forks onto the table:
+one on his left-hand side and the other on his right-hand side.
+
+<h2>
+A Variant of the Original Problem 
+</h2>
+
+The following twist is added to the original version:
+
+<p>
+
+After a fork is used, it becomes a "dirty" fork and needs to be put in a
+tray for dirty forks. There is a cleaner who cleans dirty forks and then
+puts them back on the table.
+
+<h2>
+Channels for Communication
+</h2>
+
+A channel is just a shared queue of fixed capacity. The following two
+functions are for inserting an element into and taking an element out of a
+given channel:
+
+<pre
+class="patsyntax">
+#pats2xhtml_sats("\
+fun{a:vt0p} channel_insert (channel (a), a): void
+fun{a:vt0p} channel_takeout (chan: channel (a)): (a) 
+")</pre>
+
+If [channel_insert] is called on a channel that is full, then the caller is
+blocked until an element is taken out of the channel.  If [channel_takeout]
+is called on a channel that is empty, then the caller is blocked until an
+element is inserted into the channel.
+
+<h2>
+A Channel for Each Fork
+</h2>
+
+Forks are resources given a linear type. Each fork is initially stored in a
+channel, which can be obtained by calling the following function:
+
+<pre
+class="patsyntax">
+#pats2xhtml_sats("\
+fun fork_changet (n: nphil): channel(fork)
+")</pre>
+
+where the type [nphil] is defined to be [natLt(5)] (for natural numbers
+less than 5). The channels for storing forks are chosen to be of capacity
+2. The reason that channels of capacity 2 are chosen to store at most one
+element (in each of them) is to guarantee that these channels can never be
+full (so that there is no attempt made to send signals to awake callers
+supposedly being blocked due to channels being full).
+
+
+<h2>
+A Channel for the Fork Tray
+</h2>
+
+A tray for storing "dirty" forks is also a channel, which can be obtained
+by calling the following function:
+
+<pre
+class="patsyntax">
+#pats2xhtml_sats("\
+fun forktray_changet ((*void*)): channel(fork)
+")</pre>
+
+The capacity chosen for the channel is 6 (instead of 5) so that it can
+never become full (as there are only 5 forks in total).
+
+<h2>
+Philosopher Loop
+</h2>
+
+Each philosopher is implemented as a loop:
+
+<pre
+class="patsyntax">
+#pats2xhtml_dats('\
+implement
+phil_loop (n) = let
+//
+val () = phil_think (n)
+//
+val nl = phil_left (n) // = n
+val nr = phil_right (n) // = (n+1) % 5
+//
+val ch_lfork = fork_changet (nl)
+val ch_rfork = fork_changet (nr)
+//
+val lf = channel_takeout (ch_lfork)
+val () = println! ("phil_loop(", n, ") picks left fork")
+//
+val () = randsleep (2) // sleep up to 2 seconds
+//
+val rf = channel_takeout (ch_rfork)
+val () = println! ("phil_loop(", n, ") picks right fork")
+//
+val () = phil_dine (n, lf, rf)
+//
+val ch_forktray = forktray_changet ()
+val () = channel_insert (ch_forktray, lf) // left fork to dirty tray
+val () = channel_insert (ch_forktray, rf) // right fork to dirty tray
+//
+in
+  phil_loop (n)
+end // end of [phil_loop]
+')</pre>
+
+It should be straighforward to follow the code for [phil_loop].
+
+<h2>
+Fork Cleaner Loop
+</h2>
+
+A cleaner is implemented as a loop:
+
+<pre
+class="patsyntax">
+#pats2xhtml_dats('\
+implement
+cleaner_loop () = let
+//
+val ch = forktray_changet ()
+val f0 = channel_takeout (ch) // [f0] is dirty
+//
+val () = cleaner_wash (f0) // washes dirty [f0]
+val () = cleaner_return (f0) // puts back cleaned [f0]
+//
+in
+  cleaner_loop ()
+end // end of [cleaner_loop]
+')</pre>
+
+The function [cleaner_return] first finds out the number of a given fork
+and then uses the number to locate the channel for storing the fork. Its
+actual implementation is given as follows:
+
+<pre
+class="patsyntax">
+#pats2xhtml_dats('\
+implement
+cleaner_return (f) =
+{
+  val n = fork_get_num (f)
+  val ch = fork_changet (n)
+  val () = channel_insert (ch, f)
+}
+')</pre>
+
+It should now be straighforward to follow the code for [cleaner_loop].
+
+<h2>
+Testing
+</h2>
+
+The entire code of this implementation is stored in the following files:
+
+<pre>
+DiningPhil2.sats
+DiningPhil2.dats
+DiningPhil2_fork.dats
+DiningPhil2_thread.dats
+</pre>
+
+There is also a Makefile available for compiling the ATS source code into
+an excutable for testing. One should be able to encounter a deadlock after
+running the simulation for a while.
+
+<hr size="2">
+
+This article is written by <a href="http://www.cs.bu.edu/~hwxi/">Hongwei Xi</a>.
+
+</body>
+</html>
+
+%{
+implement main () = fprint_filsub (stdout_ref, "main_atxt.txt")
+%}
diff --git a/samples/Alloy/file_system.als b/samples/Alloy/file_system.als
new file mode 100644
index 00000000..60fd959b
--- /dev/null
+++ b/samples/Alloy/file_system.als
@@ -0,0 +1,59 @@
+module examples/systems/file_system
+
+/*
+ * Model of a generic file system.
+ */
+
+abstract sig Object {}
+
+sig Name {}
+
+sig File extends Object {} { some d: Dir | this in d.entries.contents }
+
+sig Dir extends Object {
+  entries: set DirEntry,
+  parent: lone Dir
+} {
+  parent = this.~@contents.~@entries
+  all e1, e2 : entries | e1.name = e2.name => e1 = e2
+  this !in this.^@parent
+  this != Root => Root in this.^@parent
+}
+
+one sig Root extends Dir {} { no parent }
+
+lone sig Cur extends Dir {}
+
+sig DirEntry {
+  name: Name,
+  contents: Object
+} {
+  one this.~entries
+}
+
+
+/**
+ * all directories besides root have one parent
+ */
+pred OneParent_buggyVersion {
+    all d: Dir - Root | one d.parent
+}
+
+/**
+ * all directories besides root have one parent
+ */
+pred OneParent_correctVersion {
+    all d: Dir - Root | (one d.parent && one contents.d)
+}
+
+/**
+ * Only files may be linked (that is, have more than one entry)
+ * That is, all directories are the contents of at most one directory entry
+ */
+pred NoDirAliases {
+    all o: Dir | lone o.~contents
+}
+
+check { OneParent_buggyVersion => NoDirAliases } for 5 expect 1
+
+check { OneParent_correctVersion => NoDirAliases } for 5 expect 0
diff --git a/samples/Alloy/marksweepgc.als b/samples/Alloy/marksweepgc.als
new file mode 100644
index 00000000..b8081e3f
--- /dev/null
+++ b/samples/Alloy/marksweepgc.als
@@ -0,0 +1,83 @@
+module examples/systems/marksweepgc
+
+/*
+ * Model of mark and sweep garbage collection.
+ */
+
+// a node in the heap
+sig Node {}
+
+sig HeapState {
+  left, right : Node -> lone Node,
+  marked : set Node,
+  freeList : lone Node
+}
+
+pred clearMarks[hs, hs' : HeapState] {
+  // clear marked set
+  no hs'.marked
+  // left and right fields are unchanged
+  hs'.left = hs.left
+  hs'.right = hs.right
+}
+
+/**
+ * simulate the recursion of the mark() function using transitive closure
+ */
+fun reachable[hs: HeapState, n: Node] : set Node {
+  n + n.^(hs.left + hs.right)
+}
+
+pred mark[hs: HeapState, from : Node, hs': HeapState] {
+  hs'.marked = hs.reachable[from]
+  hs'.left = hs.left
+  hs'.right = hs.right
+}
+
+/**
+ * complete hack to simulate behavior of code to set freeList
+ */
+pred setFreeList[hs, hs': HeapState] {
+  // especially hackish
+  hs'.freeList.*(hs'.left) in (Node - hs.marked)
+  all n: Node |
+    (n !in hs.marked) => {
+      no hs'.right[n]
+      hs'.left[n] in (hs'.freeList.*(hs'.left))
+      n in hs'.freeList.*(hs'.left)
+    } else {
+      hs'.left[n] = hs.left[n]
+      hs'.right[n] = hs.right[n]
+    }
+  hs'.marked = hs.marked
+}
+
+pred GC[hs: HeapState, root : Node, hs': HeapState] {
+  some hs1, hs2: HeapState |
+    hs.clearMarks[hs1] && hs1.mark[root, hs2] && hs2.setFreeList[hs']
+}
+
+assert Soundness1 {
+  all h, h' : HeapState, root : Node |
+    h.GC[root, h'] =>
+      (all live : h.reachable[root] | {
+        h'.left[live] = h.left[live]
+        h'.right[live] = h.right[live]
+      })
+}
+
+assert Soundness2 {
+  all h, h' : HeapState, root : Node |
+    h.GC[root, h'] =>
+      no h'.reachable[root] & h'.reachable[h'.freeList]
+}
+
+assert Completeness {
+  all h, h' : HeapState, root : Node |
+    h.GC[root, h'] =>
+      (Node - h'.reachable[root]) in h'.reachable[h'.freeList]
+}
+
+check Soundness1 for 3 expect 0
+check Soundness2 for 3 expect 0
+check Completeness for 3 expect 0
diff --git a/samples/Alloy/views.als b/samples/Alloy/views.als
new file mode 100644
index 00000000..3a5ab82b
--- /dev/null
+++ b/samples/Alloy/views.als
@@ -0,0 +1,217 @@
+module examples/systems/views
+
+/*
+ * Model of views in object-oriented programming.
+ *
+ * Two object references, called the view and the backing,
+ * are related by a view mechanism when changes to the
+ * backing are automatically propagated to the view. Note
+ * that the state of a view need not be a projection of the
+ * state of the backing; the keySet method of Map, for
+ * example, produces two view relationships, and for the
+ * one in which the map is modified by changes to the key
+ * set, the value of the new map cannot be determined from
+ * the key set. Note that in the iterator view mechanism,
+ * the iterator is by this definition the backing object,
+ * since changes are propagated from iterator to collection
+ * and not vice versa. Oddly, a reference may be a view of
+ * more than one backing: there can be two iterators on the
+ * same collection, eg. A reference cannot be a view under
+ * more than one view type.
+ *
+ * A reference is made dirty when it is a backing for a view
+ * with which it is no longer related by the view invariant.
+ * This usually happens when a view is modified, either
+ * directly or via another backing. For example, changing a
+ * collection directly when it has an iterator invalidates
+ * it, as does changing the collection through one iterator
+ * when there are others.
+ *
+ * More work is needed if we want to model more closely the
+ * failure of an iterator when its collection is invalidated.
+ *
+ * As a terminological convention, when there are two
+ * complementary view relationships, we will give them types
+ * t and t'. For example, KeySetView propagates from map to
+ * set, and KeySetView' propagates from set to map.
+ *
+ * author: Daniel Jackson
+ */
+
+open util/ordering[State] as so
+open util/relation as rel
+
+sig Ref {}
+sig Object {}
+
+-- t->b->v in views when v is view of type t of backing b
+-- dirty contains refs that have been invalidated
+sig State {
+  refs: set Ref,
+  obj: refs -> one Object,
+  views: ViewType -> refs -> refs,
+  dirty: set refs
+--  , anyviews: Ref -> Ref -- for visualization
+  }
+-- {anyviews = ViewType.views}
+
+sig Map extends Object {
+  keys: set Ref,
+  map: keys -> one Ref
+  }{all s: State |  keys + Ref.map in s.refs}
+sig MapRef extends Ref {}
+fact {State.obj[MapRef] in Map}
+
+sig Iterator extends Object {
+  left, done: set Ref,
+  lastRef: lone done
+  }{all s: State | done + left + lastRef in s.refs}
+sig IteratorRef extends Ref {}
+fact {State.obj[IteratorRef] in Iterator}
+
+sig Set extends Object {
+  elts: set Ref
+  }{all s: State | elts in s.refs}
+sig SetRef extends Ref {}
+fact {State.obj[SetRef] in Set}
+
+abstract sig ViewType {}
+one sig KeySetView, KeySetView', IteratorView extends ViewType {}
+fact ViewTypes {
+  State.views[KeySetView] in MapRef -> SetRef
+  State.views[KeySetView'] in SetRef -> MapRef
+  State.views[IteratorView] in IteratorRef -> SetRef
+  all s: State | s.views[KeySetView] = ~(s.views[KeySetView'])
+  }
+
+/**
+ * mods is refs modified directly or by view mechanism
+ * doesn't handle possibility of modifying an object and its view at once?
+ * should we limit frame conds to non-dirty refs?
+ */
+pred modifies [pre, post: State, rs: set Ref] {
+  let vr = pre.views[ViewType], mods = rs.*vr {
+    all r: pre.refs - mods | pre.obj[r] = post.obj[r]
+    all b: mods, v: pre.refs, t: ViewType |
+      b->v in pre.views[t] => viewFrame [t, pre.obj[v], post.obj[v], post.obj[b]]
+    post.dirty = pre.dirty +
+      {b: pre.refs | some v: Ref, t: ViewType |
+          b->v in pre.views[t] && !viewFrame [t, pre.obj[v], post.obj[v], post.obj[b]]
+      }
+    }
+  }
+
+pred allocates [pre, post: State, rs: set Ref] {
+  no rs & pre.refs
+  post.refs = pre.refs + rs
+  }
+
+/** 
+ * models frame condition that limits change to view object from v to v' when backing object changes to b'
+ */
+pred viewFrame [t: ViewType, v, v', b': Object] {
+  t in KeySetView => v'.elts = dom [b'.map]
+  t in KeySetView' => b'.elts = dom [v'.map]
+  t in KeySetView' => (b'.elts) <: (v.map) = (b'.elts) <: (v'.map)
+  t in IteratorView => v'.elts = b'.left + b'.done
+  }
+
+pred MapRef.keySet [pre, post: State, setRefs: SetRef] {
+  post.obj[setRefs].elts = dom [pre.obj[this].map]
+  modifies [pre, post, none]
+  allocates [pre, post, setRefs]
+  post.views = pre.views + KeySetView->this->setRefs + KeySetView'->setRefs->this
+  }
+
+pred MapRef.put [pre, post: State, k, v: Ref] {
+  post.obj[this].map = pre.obj[this].map ++ k->v
+  modifies [pre, post, this]
+  allocates [pre, post, none]
+  post.views = pre.views
+  }
+
+pred SetRef.iterator [pre, post: State, iterRef: IteratorRef] {
+  let i = post.obj[iterRef] {
+    i.left = pre.obj[this].elts
+    no i.done + i.lastRef
+    }
+  modifies [pre,post,none]
+  allocates [pre, post, iterRef]
+  post.views = pre.views + IteratorView->iterRef->this
+  }
+
+pred IteratorRef.remove [pre, post: State] {
+  let i = pre.obj[this], i' = post.obj[this] {
+    i'.left = i.left
+    i'.done = i.done - i.lastRef
+    no i'.lastRef
+    }
+  modifies [pre,post,this]
+  allocates [pre, post, none]
+  pre.views = post.views
+  }
+
+pred IteratorRef.next [pre, post: State, ref: Ref] {
+  let i = pre.obj[this], i' = post.obj[this] {
+    ref in i.left
+    i'.left = i.left - ref
+    i'.done = i.done + ref
+    i'.lastRef = ref
+    }
+  modifies [pre, post, this]
+  allocates [pre, post, none]
+  pre.views = post.views
+  }
+
+pred IteratorRef.hasNext [s: State] {
+  some s.obj[this].left
+  }
+
+assert zippishOK {
+  all
+    ks, vs: SetRef,
+    m: MapRef,
+    ki, vi: IteratorRef,
+    k, v: Ref |
+    let s0=so/first,
+    s1=so/next[s0],
+    s2=so/next[s1],
+    s3=so/next[s2],
+    s4=so/next[s3],
+    s5=so/next[s4],
+    s6=so/next[s5],
+    s7=so/next[s6] |
+  ({
+    precondition [s0, ks, vs, m]
+    no s0.dirty
+    ks.iterator [s0, s1, ki]
+    vs.iterator [s1, s2, vi]
+    ki.hasNext [s2]
+    vi.hasNext [s2]
+    ki.this/next [s2, s3, k]
+    vi.this/next [s3, s4, v]
+    m.put [s4, s5, k, v]
+    ki.remove [s5, s6]
+    vi.remove [s6, s7]
+  } => no State.dirty)
+  }
+
+pred precondition [pre: State, ks, vs, m: Ref] {
+  // all these conditions and other errors discovered in scope of 6 but 8,3
+  // in initial state, must have view invariants hold
+  (all t: ViewType, b, v: pre.refs |
+    b->v in pre.views[t] => viewFrame [t, pre.obj[v], pre.obj[v], pre.obj[b]])
+  // sets are not aliases
+--  ks != vs
+  // sets are not views of map
+--  no (ks+vs)->m & ViewType.pre.views
+  // no iterator currently on either set
+--  no Ref->(ks+vs) & ViewType.pre.views
+  }
+
+check zippishOK for 6 but 8 State, 3 ViewType expect 1
+
+/** 
+ * experiment with controlling heap size
+ */
+fact {all s: State | #s.obj < 5}
diff --git a/samples/AspectJ/CacheAspect.aj b/samples/AspectJ/CacheAspect.aj
new file mode 100644
index 00000000..bfab7bc4
--- /dev/null
+++ b/samples/AspectJ/CacheAspect.aj
@@ -0,0 +1,41 @@
+package com.blogspot.miguelinlas3.aspectj.cache;
+
+import java.util.Map;
+import java.util.WeakHashMap;
+
+import org.aspectj.lang.JoinPoint;
+
+import com.blogspot.miguelinlas3.aspectj.cache.marker.Cachable;
+
+/**
+ * This simple aspect simulates the behaviour of a very simple cache
+ *  
+ * @author migue
+ *
+ */
+public aspect CacheAspect {
+
+	public pointcut cache(Cachable cachable): execution(@Cachable * * (..)) && @annotation(cachable);
+	
+	Object around(Cachable cachable): cache(cachable){
+	
+		String evaluatedKey = this.evaluateKey(cachable.scriptKey(), thisJoinPoint);
+		
+		if(cache.containsKey(evaluatedKey)){
+			System.out.println("Cache hit for key " + evaluatedKey);
+			return this.cache.get(evaluatedKey);
+		}
+		
+		System.out.println("Cache miss for key " + evaluatedKey);
+		Object value = proceed(cachable);
+		cache.put(evaluatedKey, value);
+		return value;
+	}
+	
+	protected String evaluateKey(String key, JoinPoint joinPoint) {
+		// TODO add some smart staff to allow simple scripting in @Cachable annotation
+		return key;
+	}
+	
+	protected Map<String, Object> cache = new WeakHashMap<String, Object>();
+}
diff --git a/samples/AspectJ/OptimizeRecursionCache.aj b/samples/AspectJ/OptimizeRecursionCache.aj
new file mode 100644
index 00000000..ed1e8695
--- /dev/null
+++ b/samples/AspectJ/OptimizeRecursionCache.aj
@@ -0,0 +1,50 @@
+package aspects.caching;
+
+import java.util.Map;
+
+/**
+ * Cache aspect for optimize recursive functions.
+ * 
+ * @author Migueli
+ * @date 05/11/2013
+ * @version 1.0
+ *
+ */
+public abstract aspect OptimizeRecursionCache {
+		
+	@SuppressWarnings("rawtypes")
+	private Map _cache;
+	
+	public OptimizeRecursionCache() {
+		_cache = getCache();
+	}
+	
+	@SuppressWarnings("rawtypes")
+	abstract public Map getCache();
+	
+	abstract public pointcut operation(Object o);
+
+	pointcut topLevelOperation(Object o): operation(o) && !cflowbelow(operation(Object));
+
+	before(Object o) : topLevelOperation(o) {
+		System.out.println("Seeking value for " + o);
+	}
+
+	Object around(Object o) : operation(o) {
+		Object cachedValue = _cache.get(o);
+		if (cachedValue != null) {
+			System.out.println("Found cached value for " + o + ": " + cachedValue);
+			return cachedValue;
+		}
+		return proceed(o);
+	}
+
+	@SuppressWarnings("unchecked")
+	after(Object o) returning(Object result) : topLevelOperation(o) {
+		_cache.put(o, result);
+	}
+	
+	after(Object o) returning(Object result) : topLevelOperation(o) {
+		System.out.println("cache size: " + _cache.size());
+	}
+}
diff --git a/samples/Assembly/ASSEMBLE.inc b/samples/Assembly/ASSEMBLE.inc
new file mode 100644
index 00000000..c4ffdae3
--- /dev/null
+++ b/samples/Assembly/ASSEMBLE.inc
@@ -0,0 +1,2048 @@
+
+; flat assembler core
+; Copyright (c) 1999-2014, Tomasz Grysztar.
+; All rights reserved.
+
+assembler:
+	xor	eax,eax
+	mov	[stub_size],eax
+	mov	[current_pass],ax
+	mov	[resolver_flags],eax
+	mov	[number_of_sections],eax
+	mov	[actual_fixups_size],eax
+      assembler_loop:
+	mov	eax,[labels_list]
+	mov	[tagged_blocks],eax
+	mov	eax,[additional_memory]
+	mov	[free_additional_memory],eax
+	mov	eax,[additional_memory_end]
+	mov	[structures_buffer],eax
+	mov	esi,[source_start]
+	mov	edi,[code_start]
+	xor	eax,eax
+	mov	dword [adjustment],eax
+	mov	dword [adjustment+4],eax
+	mov	[addressing_space],eax
+	mov	[error_line],eax
+	mov	[counter],eax
+	mov	[format_flags],eax
+	mov	[number_of_relocations],eax
+	mov	[undefined_data_end],eax
+	mov	[file_extension],eax
+	mov	[next_pass_needed],al
+	mov	[output_format],al
+	mov	[adjustment_sign],al
+	mov	[code_type],16
+	call	init_addressing_space
+      pass_loop:
+	call	assemble_line
+	jnc	pass_loop
+	mov	eax,[additional_memory_end]
+	cmp	eax,[structures_buffer]
+	je	pass_done
+	sub	eax,18h
+	mov	eax,[eax+4]
+	mov	[current_line],eax
+	jmp	missing_end_directive
+      pass_done:
+	call	close_pass
+	mov	eax,[labels_list]
+      check_symbols:
+	cmp	eax,[memory_end]
+	jae	symbols_checked
+	test	byte [eax+8],8
+	jz	symbol_defined_ok
+	mov	cx,[current_pass]
+	cmp	cx,[eax+18]
+	jne	symbol_defined_ok
+	test	byte [eax+8],1
+	jz	symbol_defined_ok
+	sub	cx,[eax+16]
+	cmp	cx,1
+	jne	symbol_defined_ok
+	and	byte [eax+8],not 1
+	or	[next_pass_needed],-1
+      symbol_defined_ok:
+	test	byte [eax+8],10h
+	jz	use_prediction_ok
+	mov	cx,[current_pass]
+	and	byte [eax+8],not 10h
+	test	byte [eax+8],20h
+	jnz	check_use_prediction
+	cmp	cx,[eax+18]
+	jne	use_prediction_ok
+	test	byte [eax+8],8
+	jz	use_prediction_ok
+	jmp	use_misprediction
+      check_use_prediction:
+	test	byte [eax+8],8
+	jz	use_misprediction
+	cmp	cx,[eax+18]
+	je	use_prediction_ok
+      use_misprediction:
+	or	[next_pass_needed],-1
+      use_prediction_ok:
+	test	byte [eax+8],40h
+	jz	check_next_symbol
+	and	byte [eax+8],not 40h
+	test	byte [eax+8],4
+	jnz	define_misprediction
+	mov	cx,[current_pass]
+	test	byte [eax+8],80h
+	jnz	check_define_prediction
+	cmp	cx,[eax+16]
+	jne	check_next_symbol
+	test	byte [eax+8],1
+	jz	check_next_symbol
+	jmp	define_misprediction
+      check_define_prediction:
+	test	byte [eax+8],1
+	jz	define_misprediction
+	cmp	cx,[eax+16]
+	je	check_next_symbol
+      define_misprediction:
+	or	[next_pass_needed],-1
+      check_next_symbol:
+	add	eax,LABEL_STRUCTURE_SIZE
+	jmp	check_symbols
+      symbols_checked:
+	cmp	[next_pass_needed],0
+	jne	next_pass
+	mov	eax,[error_line]
+	or	eax,eax
+	jz	assemble_ok
+	mov	[current_line],eax
+	cmp	[error],undefined_symbol
+	jne	error_confirmed
+	mov	eax,[error_info]
+	or	eax,eax
+	jz	error_confirmed
+	test	byte [eax+8],1
+	jnz	next_pass
+      error_confirmed:
+	call	error_handler
+      error_handler:
+	mov	eax,[error]
+	sub	eax,error_handler
+	add	[esp],eax
+	ret
+      next_pass:
+	inc	[current_pass]
+	mov	ax,[current_pass]
+	cmp	ax,[passes_limit]
+	je	code_cannot_be_generated
+	jmp	assembler_loop
+      assemble_ok:
+	ret
+
+create_addressing_space:
+	mov	ebx,[addressing_space]
+	test	ebx,ebx
+	jz	init_addressing_space
+	test	byte [ebx+0Ah],1
+	jnz	illegal_instruction
+	mov	eax,edi
+	sub	eax,[ebx+18h]
+	mov	[ebx+1Ch],eax
+      init_addressing_space:
+	mov	ebx,[tagged_blocks]
+	mov	dword [ebx-4],10h
+	mov	dword [ebx-8],20h
+	sub	ebx,8+20h
+	cmp	ebx,edi
+	jbe	out_of_memory
+	mov	[tagged_blocks],ebx
+	mov	[addressing_space],ebx
+	xor	eax,eax
+	mov	[ebx],edi
+	mov	[ebx+4],eax
+	mov	[ebx+8],eax
+	mov	[ebx+10h],eax
+	mov	[ebx+14h],eax
+	mov	[ebx+18h],edi
+	mov	[ebx+1Ch],eax
+	ret
+
+assemble_line:
+	mov	eax,[tagged_blocks]
+	sub	eax,100h
+	cmp	edi,eax
+	ja	out_of_memory
+	lods	byte [esi]
+	cmp	al,1
+	je	assemble_instruction
+	jb	source_end
+	cmp	al,3
+	jb	define_label
+	je	define_constant
+	cmp	al,4
+	je	label_addressing_space
+	cmp	al,0Fh
+	je	new_line
+	cmp	al,13h
+	je	code_type_setting
+	cmp	al,10h
+	jne	illegal_instruction
+	lods	byte [esi]
+	jmp	segment_prefix
+      code_type_setting:
+	lods	byte [esi]
+	mov	[code_type],al
+	jmp	instruction_assembled
+      new_line:
+	lods	dword [esi]
+	mov	[current_line],eax
+	mov	[prefixed_instruction],0
+	cmp	[symbols_file],0
+	je	continue_line
+	cmp	[next_pass_needed],0
+	jne	continue_line
+	mov	ebx,[tagged_blocks]
+	mov	dword [ebx-4],1
+	mov	dword [ebx-8],14h
+	sub	ebx,8+14h
+	cmp	ebx,edi
+	jbe	out_of_memory
+	mov	[tagged_blocks],ebx
+	mov	[ebx],eax
+	mov	[ebx+4],edi
+	mov	eax,[addressing_space]
+	mov	[ebx+8],eax
+	mov	al,[code_type]
+	mov	[ebx+10h],al
+      continue_line:
+	cmp	byte [esi],0Fh
+	je	line_assembled
+	jmp	assemble_line
+      define_label:
+	lods	dword [esi]
+	cmp	eax,0Fh
+	jb	invalid_use_of_symbol
+	je	reserved_word_used_as_symbol
+	mov	ebx,eax
+	lods	byte [esi]
+	mov	[label_size],al
+	call	make_label
+	jmp	continue_line
+      make_label:
+	mov	eax,edi
+	xor	edx,edx
+	xor	cl,cl
+	mov	ebp,[addressing_space]
+	sub	eax,[ds:ebp]
+	sbb	edx,[ds:ebp+4]
+	sbb	cl,[ds:ebp+8]
+	jp	label_value_ok
+	call	recoverable_overflow
+      label_value_ok:
+	mov	[address_sign],cl
+	test	byte [ds:ebp+0Ah],1
+	jnz	make_virtual_label
+	or	byte [ebx+9],1
+	xchg	eax,[ebx]
+	xchg	edx,[ebx+4]
+	mov	ch,[ebx+9]
+	shr	ch,1
+	and	ch,1
+	neg	ch
+	sub	eax,[ebx]
+	sbb	edx,[ebx+4]
+	sbb	ch,cl
+	mov	dword [adjustment],eax
+	mov	dword [adjustment+4],edx
+	mov	[adjustment_sign],ch
+	or	al,ch
+	or	eax,edx
+	setnz	ah
+	jmp	finish_label
+      make_virtual_label:
+	and	byte [ebx+9],not 1
+	cmp	eax,[ebx]
+	mov	[ebx],eax
+	setne	ah
+	cmp	edx,[ebx+4]
+	mov	[ebx+4],edx
+	setne	al
+	or	ah,al
+      finish_label:
+	mov	ebp,[addressing_space]
+	mov	ch,[ds:ebp+9]
+	mov	cl,[label_size]
+	mov	edx,[ds:ebp+14h]
+	mov	ebp,[ds:ebp+10h]
+      finish_label_symbol:
+	mov	al,[address_sign]
+	xor	al,[ebx+9]
+	and	al,10b
+	or	ah,al
+	xor	[ebx+9],al
+	cmp	cl,[ebx+10]
+	mov	[ebx+10],cl
+	setne	al
+	or	ah,al
+	cmp	ch,[ebx+11]
+	mov	[ebx+11],ch
+	setne	al
+	or	ah,al
+	cmp	ebp,[ebx+12]
+	mov	[ebx+12],ebp
+	setne	al
+	or	ah,al
+	or	ch,ch
+	jz	label_symbol_ok
+	cmp	edx,[ebx+20]
+	mov	[ebx+20],edx
+	setne	al
+	or	ah,al
+      label_symbol_ok:
+	mov	cx,[current_pass]
+	xchg	[ebx+16],cx
+	mov	edx,[current_line]
+	mov	[ebx+28],edx
+	and	byte [ebx+8],not 2
+	test	byte [ebx+8],1
+	jz	new_label
+	cmp	cx,[ebx+16]
+	je	symbol_already_defined
+	btr	dword [ebx+8],10
+	jc	requalified_label
+	inc	cx
+	sub	cx,[ebx+16]
+	setnz	al
+	or	ah,al
+	jz	label_made
+	test	byte [ebx+8],8
+	jz	label_made
+	mov	cx,[current_pass]
+	cmp	cx,[ebx+18]
+	jne	label_made
+      requalified_label:
+	or	[next_pass_needed],-1
+      label_made:
+	ret
+      new_label:
+	or	byte [ebx+8],1
+	ret
+      define_constant:
+	lods	dword [esi]
+	inc	esi
+	cmp	eax,0Fh
+	jb	invalid_use_of_symbol
+	je	reserved_word_used_as_symbol
+	mov	edx,[eax+8]
+	push	edx
+	cmp	[current_pass],0
+	je	get_constant_value
+	test	dl,4
+	jnz	get_constant_value
+	mov	cx,[current_pass]
+	cmp	cx,[eax+16]
+	je	get_constant_value
+	or	dl,4
+	mov	[eax+8],dl
+      get_constant_value:
+	push	eax
+	mov	al,byte [esi-1]
+	push	eax
+	or	[size_override],-1
+	call	get_value
+	pop	ebx
+	mov	ch,bl
+	pop	ebx
+	pop	ecx
+	test	cl,4
+	jnz	constant_referencing_mode_ok
+	and	byte [ebx+8],not 4
+      constant_referencing_mode_ok:
+	xor	cl,cl
+	mov	ch,[value_type]
+	cmp	ch,3
+	je	invalid_use_of_symbol
+      make_constant:
+	and	byte [ebx+9],not 1
+	cmp	eax,[ebx]
+	mov	[ebx],eax
+	setne	ah
+	cmp	edx,[ebx+4]
+	mov	[ebx+4],edx
+	setne	al
+	or	ah,al
+	mov	al,[value_sign]
+	xor	al,[ebx+9]
+	and	al,10b
+	or	ah,al
+	xor	[ebx+9],al
+	cmp	cl,[ebx+10]
+	mov	[ebx+10],cl
+	setne	al
+	or	ah,al
+	cmp	ch,[ebx+11]
+	mov	[ebx+11],ch
+	setne	al
+	or	ah,al
+	xor	edx,edx
+	cmp	edx,[ebx+12]
+	mov	[ebx+12],edx
+	setne	al
+	or	ah,al
+	or	ch,ch
+	jz	constant_symbol_ok
+	mov	edx,[symbol_identifier]
+	cmp	edx,[ebx+20]
+	mov	[ebx+20],edx
+	setne	al
+	or	ah,al
+      constant_symbol_ok:
+	mov	cx,[current_pass]
+	xchg	[ebx+16],cx
+	mov	edx,[current_line]
+	mov	[ebx+28],edx
+	test	byte [ebx+8],1
+	jz	new_constant
+	cmp	cx,[ebx+16]
+	jne	redeclare_constant
+	test	byte [ebx+8],2
+	jz	symbol_already_defined
+	or	byte [ebx+8],4
+	and	byte [ebx+9],not 4
+	jmp	instruction_assembled
+      redeclare_constant:
+	btr	dword [ebx+8],10
+	jc	requalified_constant
+	inc	cx
+	sub	cx,[ebx+16]
+	setnz	al
+	or	ah,al
+	jz	instruction_assembled
+	test	byte [ebx+8],4
+	jnz	instruction_assembled
+	test	byte [ebx+8],8
+	jz	instruction_assembled
+	mov	cx,[current_pass]
+	cmp	cx,[ebx+18]
+	jne	instruction_assembled
+      requalified_constant:
+	or	[next_pass_needed],-1
+	jmp	instruction_assembled
+      new_constant:
+	or	byte [ebx+8],1+2
+	jmp	instruction_assembled
+      label_addressing_space:
+	lods	dword [esi]
+	cmp	eax,0Fh
+	jb	invalid_use_of_symbol
+	je	reserved_word_used_as_symbol
+	mov	cx,[current_pass]
+	test	byte [eax+8],1
+	jz	make_addressing_space_label
+	cmp	cx,[eax+16]
+	je	symbol_already_defined
+	test	byte [eax+9],4
+	jnz	make_addressing_space_label
+	or	[next_pass_needed],-1
+      make_addressing_space_label:
+	mov	dx,[eax+8]
+	and	dx,not (2 or 100h)
+	or	dx,1 or 4 or 400h
+	mov	[eax+8],dx
+	mov	[eax+16],cx
+	mov	edx,[current_line]
+	mov	[eax+28],edx
+	mov	ebx,[addressing_space]
+	mov	[eax],ebx
+	or	byte [ebx+0Ah],2
+	jmp	continue_line
+      assemble_instruction:
+;        mov     [operand_size],0
+;        mov     [size_override],0
+;        mov     [operand_prefix],0
+;        mov     [opcode_prefix],0
+	and	dword [operand_size],0
+;        mov     [rex_prefix],0
+;        mov     [vex_required],0
+;        mov     [vex_register],0
+;        mov     [immediate_size],0
+	and	dword [rex_prefix],0
+	call	instruction_handler
+      instruction_handler:
+	movzx	ebx,word [esi]
+	mov	al,[esi+2]
+	add	esi,3
+	add	[esp],ebx
+	ret
+      instruction_assembled:
+	mov	al,[esi]
+	cmp	al,0Fh
+	je	line_assembled
+	or	al,al
+	jnz	extra_characters_on_line
+      line_assembled:
+	clc
+	ret
+      source_end:
+	dec	esi
+	stc
+	ret
+
+org_directive:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_qword_value
+	mov	cl,[value_type]
+	test	cl,1
+	jnz	invalid_use_of_symbol
+	push	eax
+	mov	ebx,[addressing_space]
+	mov	eax,edi
+	sub	eax,[ebx+18h]
+	mov	[ebx+1Ch],eax
+	test	byte [ebx+0Ah],1
+	jnz	in_virtual
+	call	init_addressing_space
+	jmp	org_space_ok
+      in_virtual:
+	call	close_virtual_addressing_space
+	call	init_addressing_space
+	or	byte [ebx+0Ah],1
+      org_space_ok:
+	pop	eax
+	mov	[ebx+9],cl
+	mov	cl,[value_sign]
+	sub	[ebx],eax
+	sbb	[ebx+4],edx
+	sbb	byte [ebx+8],cl
+	jp	org_value_ok
+	call	recoverable_overflow
+      org_value_ok:
+	mov	edx,[symbol_identifier]
+	mov	[ebx+14h],edx
+	cmp	[output_format],1
+	ja	instruction_assembled
+	cmp	edi,[code_start]
+	jne	instruction_assembled
+	cmp	eax,100h
+	jne	instruction_assembled
+	bts	[format_flags],0
+	jmp	instruction_assembled
+label_directive:
+	lods	byte [esi]
+	cmp	al,2
+	jne	invalid_argument
+	lods	dword [esi]
+	cmp	eax,0Fh
+	jb	invalid_use_of_symbol
+	je	reserved_word_used_as_symbol
+	inc	esi
+	mov	ebx,eax
+	mov	[label_size],0
+	lods	byte [esi]
+	cmp	al,':'
+	je	get_label_size
+	dec	esi
+	cmp	al,11h
+	jne	label_size_ok
+      get_label_size:
+	lods	word [esi]
+	cmp	al,11h
+	jne	invalid_argument
+	mov	[label_size],ah
+      label_size_ok:
+	cmp	byte [esi],80h
+	je	get_free_label_value
+	call	make_label
+	jmp	instruction_assembled
+      get_free_label_value:
+	inc	esi
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	push	ebx ecx
+	or	byte [ebx+8],4
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_address_value
+	or	bh,bh
+	setnz	ch
+	xchg	ch,cl
+	mov	bp,cx
+	shl	ebp,16
+	xchg	bl,bh
+	mov	bp,bx
+	pop	ecx ebx
+	and	byte [ebx+8],not 4
+	mov	ch,[value_type]
+	test	ch,1
+	jnz	invalid_use_of_symbol
+      make_free_label:
+	and	byte [ebx+9],not 1
+	cmp	eax,[ebx]
+	mov	[ebx],eax
+	setne	ah
+	cmp	edx,[ebx+4]
+	mov	[ebx+4],edx
+	setne	al
+	or	ah,al
+	mov	edx,[address_symbol]
+	mov	cl,[label_size]
+	call	finish_label_symbol
+	jmp	instruction_assembled
+load_directive:
+	lods	byte [esi]
+	cmp	al,2
+	jne	invalid_argument
+	lods	dword [esi]
+	cmp	eax,0Fh
+	jb	invalid_use_of_symbol
+	je	reserved_word_used_as_symbol
+	inc	esi
+	push	eax
+	mov	al,1
+	cmp	byte [esi],11h
+	jne	load_size_ok
+	lods	byte [esi]
+	lods	byte [esi]
+      load_size_ok:
+	cmp	al,8
+	ja	invalid_value
+	mov	[operand_size],al
+	and	dword [value],0
+	and	dword [value+4],0
+	lods	byte [esi]
+	cmp	al,82h
+	jne	invalid_argument
+	call	get_data_point
+	jc	value_loaded
+	push	esi edi
+	mov	esi,ebx
+	mov	edi,value
+	rep	movs byte [edi],[esi]
+	pop	edi esi
+      value_loaded:
+	mov	[value_sign],0
+	mov	eax,dword [value]
+	mov	edx,dword [value+4]
+	pop	ebx
+	xor	cx,cx
+	jmp	make_constant
+      get_data_point:
+	mov	ebx,[addressing_space]
+	mov	ecx,edi
+	sub	ecx,[ebx+18h]
+	mov	[ebx+1Ch],ecx
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],11h
+	jne	get_data_address
+	cmp	word [esi+1+4],'):'
+	jne	get_data_address
+	inc	esi
+	lods	dword [esi]
+	add	esi,2
+	cmp	byte [esi],'('
+	jne	invalid_argument
+	inc	esi
+	cmp	eax,0Fh
+	jbe	reserved_word_used_as_symbol
+	mov	edx,undefined_symbol
+	test	byte [eax+8],1
+	jz	addressing_space_unavailable
+	mov	edx,symbol_out_of_scope
+	mov	cx,[eax+16]
+	cmp	cx,[current_pass]
+	jne	addressing_space_unavailable
+	test	byte [eax+9],4
+	jz	invalid_use_of_symbol
+	mov	ebx,eax
+	mov	ax,[current_pass]
+	mov	[ebx+18],ax
+	or	byte [ebx+8],8
+	cmp	[symbols_file],0
+	je	get_addressing_space
+	cmp	[next_pass_needed],0
+	jne	get_addressing_space
+	call	store_label_reference
+      get_addressing_space:
+	mov	ebx,[ebx]
+      get_data_address:
+	push	ebx
+	cmp	byte [esi],'.'
+	je	invalid_value
+	or	[size_override],-1
+	call	get_address_value
+	pop	ebp
+	call	calculate_relative_offset
+	cmp	[next_pass_needed],0
+	jne	data_address_type_ok
+	cmp	[value_type],0
+	jne	invalid_use_of_symbol
+      data_address_type_ok:
+	mov	ebx,edi
+	xor	ecx,ecx
+	add	ebx,eax
+	adc	edx,ecx
+	mov	eax,ebx
+	sub	eax,[ds:ebp+18h]
+	sbb	edx,ecx
+	jnz	bad_data_address
+	mov	cl,[operand_size]
+	add	eax,ecx
+	cmp	eax,[ds:ebp+1Ch]
+	ja	bad_data_address
+	clc
+	ret
+      addressing_space_unavailable:
+	cmp	[error_line],0
+	jne	get_data_address
+	push	[current_line]
+	pop	[error_line]
+	mov	[error],edx
+	mov	[error_info],eax
+	jmp	get_data_address
+      bad_data_address:
+	call	recoverable_overflow
+	stc
+	ret
+store_directive:
+	cmp	byte [esi],11h
+	je	sized_store
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	call	get_byte_value
+	xor	edx,edx
+	movzx	eax,al
+	mov	[operand_size],1
+	jmp	store_value_ok
+      sized_store:
+	or	[size_override],-1
+	call	get_value
+      store_value_ok:
+	cmp	[value_type],0
+	jne	invalid_use_of_symbol
+	mov	dword [value],eax
+	mov	dword [value+4],edx
+	lods	byte [esi]
+	cmp	al,80h
+	jne	invalid_argument
+	call	get_data_point
+	jc	instruction_assembled
+	push	esi edi
+	mov	esi,value
+	mov	edi,ebx
+	rep	movs byte [edi],[esi]
+	mov	eax,edi
+	pop	edi esi
+	cmp	ebx,[undefined_data_end]
+	jae	instruction_assembled
+	cmp	eax,[undefined_data_start]
+	jbe	instruction_assembled
+	mov	[undefined_data_start],eax
+	jmp	instruction_assembled
+
+display_directive:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],0
+	jne	display_byte
+	inc	esi
+	lods	dword [esi]
+	mov	ecx,eax
+	push	edi
+	mov	edi,[tagged_blocks]
+	sub	edi,8
+	sub	edi,eax
+	cmp	edi,[esp]
+	jbe	out_of_memory
+	mov	[tagged_blocks],edi
+	rep	movs byte [edi],[esi]
+	stos	dword [edi]
+	xor	eax,eax
+	stos	dword [edi]
+	pop	edi
+	inc	esi
+	jmp	display_next
+      display_byte:
+	call	get_byte_value
+	push	edi
+	mov	edi,[tagged_blocks]
+	sub	edi,8+1
+	mov	[tagged_blocks],edi
+	stos	byte [edi]
+	mov	eax,1
+	stos	dword [edi]
+	dec	eax
+	stos	dword [edi]
+	pop	edi
+      display_next:
+	cmp	edi,[tagged_blocks]
+	ja	out_of_memory
+	lods	byte [esi]
+	cmp	al,','
+	je	display_directive
+	dec	esi
+	jmp	instruction_assembled
+show_display_buffer:
+	mov	eax,[tagged_blocks]
+	or	eax,eax
+	jz	display_done
+	mov	esi,[labels_list]
+	cmp	esi,eax
+	je	display_done
+      display_messages:
+	sub	esi,8
+	mov	eax,[esi+4]
+	mov	ecx,[esi]
+	sub	esi,ecx
+	test	eax,eax
+	jnz	skip_block
+	push	esi
+	call	display_block
+	pop	esi
+      skip_block:
+	cmp	esi,[tagged_blocks]
+	jne	display_messages
+      display_done:
+	ret
+
+times_directive:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_count_value
+	cmp	eax,0
+	je	zero_times
+	cmp	byte [esi],':'
+	jne	times_argument_ok
+	inc	esi
+      times_argument_ok:
+	push	[counter]
+	push	[counter_limit]
+	mov	[counter_limit],eax
+	mov	[counter],1
+      times_loop:
+	mov	eax,esp
+	sub	eax,100h
+	jc	stack_overflow
+	cmp	eax,[stack_limit]
+	jb	stack_overflow
+	push	esi
+	or	[prefixed_instruction],-1
+	call	continue_line
+	mov	eax,[counter_limit]
+	cmp	[counter],eax
+	je	times_done
+	inc	[counter]
+	pop	esi
+	jmp	times_loop
+      times_done:
+	pop	eax
+	pop	[counter_limit]
+	pop	[counter]
+	jmp	instruction_assembled
+      zero_times:
+	call	skip_symbol
+	jnc	zero_times
+	jmp	instruction_assembled
+
+virtual_directive:
+	lods	byte [esi]
+	cmp	al,80h
+	jne	virtual_at_current
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_address_value
+	mov	ebp,[address_symbol]
+	or	bh,bh
+	setnz	ch
+	jmp	set_virtual
+      virtual_at_current:
+	dec	esi
+	mov	ebp,[addressing_space]
+	mov	al,[ds:ebp+9]
+	mov	[value_type],al
+	mov	eax,edi
+	xor	edx,edx
+	xor	cl,cl
+	sub	eax,[ds:ebp]
+	sbb	edx,[ds:ebp+4]
+	sbb	cl,[ds:ebp+8]
+	mov	[address_sign],cl
+	mov	bx,[ds:ebp+10h]
+	mov	cx,[ds:ebp+10h+2]
+	xchg	bh,bl
+	xchg	ch,cl
+	mov	ebp,[ds:ebp+14h]
+      set_virtual:
+	xchg	bl,bh
+	xchg	cl,ch
+	shl	ecx,16
+	mov	cx,bx
+	push	ecx eax
+	call	allocate_structure_data
+	mov	word [ebx],virtual_directive-instruction_handler
+	mov	ecx,[addressing_space]
+	mov	[ebx+12],ecx
+	mov	[ebx+8],edi
+	mov	ecx,[current_line]
+	mov	[ebx+4],ecx
+	mov	ebx,[addressing_space]
+	mov	eax,edi
+	sub	eax,[ebx+18h]
+	mov	[ebx+1Ch],eax
+	call	init_addressing_space
+	or	byte [ebx+0Ah],1
+	pop	eax
+	mov	cl,[address_sign]
+	not	eax
+	not	edx
+	not	cl
+	add	eax,1
+	adc	edx,0
+	adc	cl,0
+	add	eax,edi
+	adc	edx,0
+	adc	cl,0
+	mov	[ebx],eax
+	mov	[ebx+4],edx
+	mov	[ebx+8],cl
+	pop	dword [ebx+10h]
+	mov	[ebx+14h],ebp
+	mov	al,[value_type]
+	test	al,1
+	jnz	invalid_use_of_symbol
+	mov	[ebx+9],al
+	jmp	instruction_assembled
+      allocate_structure_data:
+	mov	ebx,[structures_buffer]
+	sub	ebx,18h
+	cmp	ebx,[free_additional_memory]
+	jb	out_of_memory
+	mov	[structures_buffer],ebx
+	ret
+      find_structure_data:
+	mov	ebx,[structures_buffer]
+      scan_structures:
+	cmp	ebx,[additional_memory_end]
+	je	no_such_structure
+	cmp	ax,[ebx]
+	je	structure_data_found
+	add	ebx,18h
+	jmp	scan_structures
+      structure_data_found:
+	ret
+      no_such_structure:
+	stc
+	ret
+      end_virtual:
+	call	find_structure_data
+	jc	unexpected_instruction
+	push	ebx
+	call	close_virtual_addressing_space
+	pop	ebx
+	mov	eax,[ebx+12]
+	mov	[addressing_space],eax
+	mov	edi,[ebx+8]
+      remove_structure_data:
+	push	esi edi
+	mov	ecx,ebx
+	sub	ecx,[structures_buffer]
+	shr	ecx,2
+	lea	esi,[ebx-4]
+	lea	edi,[esi+18h]
+	std
+	rep	movs dword [edi],[esi]
+	cld
+	add	[structures_buffer],18h
+	pop	edi esi
+	ret
+      close_virtual_addressing_space:
+	mov	ebx,[addressing_space]
+	mov	eax,edi
+	sub	eax,[ebx+18h]
+	mov	[ebx+1Ch],eax
+	test	byte [ebx+0Ah],2
+	jz	addressing_space_closed
+	push	esi edi ecx edx
+	mov	ecx,eax
+	mov	eax,[tagged_blocks]
+	mov	dword [eax-4],11h
+	mov	dword [eax-8],ecx
+	sub	eax,8
+	sub	eax,ecx
+	mov	[tagged_blocks],eax
+	lea	edi,[eax+ecx-1]
+	xchg	eax,[ebx+18h]
+	lea	esi,[eax+ecx-1]
+	mov	eax,edi
+	sub	eax,esi
+	std
+	shr	ecx,1
+	jnc	virtual_byte_ok
+	movs	byte [edi],[esi]
+      virtual_byte_ok:
+	dec	esi
+	dec	edi
+	shr	ecx,1
+	jnc	virtual_word_ok
+	movs	word [edi],[esi]
+      virtual_word_ok:
+	sub	esi,2
+	sub	edi,2
+	rep	movs dword [edi],[esi]
+	cld
+	xor	edx,edx
+	add	[ebx],eax
+	adc	dword [ebx+4],edx
+	adc	byte [ebx+8],dl
+	pop	edx ecx edi esi
+      addressing_space_closed:
+	ret
+repeat_directive:
+	cmp	[prefixed_instruction],0
+	jne	unexpected_instruction
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_count_value
+	cmp	eax,0
+	je	zero_repeat
+	call	allocate_structure_data
+	mov	word [ebx],repeat_directive-instruction_handler
+	xchg	eax,[counter_limit]
+	mov	[ebx+10h],eax
+	mov	eax,1
+	xchg	eax,[counter]
+	mov	[ebx+14h],eax
+	mov	[ebx+8],esi
+	mov	eax,[current_line]
+	mov	[ebx+4],eax
+	jmp	instruction_assembled
+      end_repeat:
+	cmp	[prefixed_instruction],0
+	jne	unexpected_instruction
+	call	find_structure_data
+	jc	unexpected_instruction
+	mov	eax,[counter_limit]
+	inc	[counter]
+	cmp	[counter],eax
+	jbe	continue_repeating
+      stop_repeat:
+	mov	eax,[ebx+10h]
+	mov	[counter_limit],eax
+	mov	eax,[ebx+14h]
+	mov	[counter],eax
+	call	remove_structure_data
+	jmp	instruction_assembled
+      continue_repeating:
+	mov	esi,[ebx+8]
+	jmp	instruction_assembled
+      zero_repeat:
+	mov	al,[esi]
+	or	al,al
+	jz	missing_end_directive
+	cmp	al,0Fh
+	jne	extra_characters_on_line
+	call	find_end_repeat
+	jmp	instruction_assembled
+      find_end_repeat:
+	call	find_structure_end
+	cmp	ax,repeat_directive-instruction_handler
+	jne	unexpected_instruction
+	ret
+while_directive:
+	cmp	[prefixed_instruction],0
+	jne	unexpected_instruction
+	call	allocate_structure_data
+	mov	word [ebx],while_directive-instruction_handler
+	mov	eax,1
+	xchg	eax,[counter]
+	mov	[ebx+10h],eax
+	mov	[ebx+8],esi
+	mov	eax,[current_line]
+	mov	[ebx+4],eax
+      do_while:
+	push	ebx
+	call	calculate_logical_expression
+	or	al,al
+	jnz	while_true
+	mov	al,[esi]
+	or	al,al
+	jz	missing_end_directive
+	cmp	al,0Fh
+	jne	extra_characters_on_line
+      stop_while:
+	call	find_end_while
+	pop	ebx
+	mov	eax,[ebx+10h]
+	mov	[counter],eax
+	call	remove_structure_data
+	jmp	instruction_assembled
+      while_true:
+	pop	ebx
+	jmp	instruction_assembled
+      end_while:
+	cmp	[prefixed_instruction],0
+	jne	unexpected_instruction
+	call	find_structure_data
+	jc	unexpected_instruction
+	mov	eax,[ebx+4]
+	mov	[current_line],eax
+	inc	[counter]
+	jz	too_many_repeats
+	mov	esi,[ebx+8]
+	jmp	do_while
+      find_end_while:
+	call	find_structure_end
+	cmp	ax,while_directive-instruction_handler
+	jne	unexpected_instruction
+	ret
+if_directive:
+	cmp	[prefixed_instruction],0
+	jne	unexpected_instruction
+	call	calculate_logical_expression
+	mov	dl,al
+	mov	al,[esi]
+	or	al,al
+	jz	missing_end_directive
+	cmp	al,0Fh
+	jne	extra_characters_on_line
+	or	dl,dl
+	jnz	if_true
+	call	find_else
+	jc	instruction_assembled
+	mov	al,[esi]
+	cmp	al,1
+	jne	else_true
+	cmp	word [esi+1],if_directive-instruction_handler
+	jne	else_true
+	add	esi,4
+	jmp	if_directive
+      if_true:
+	xor	al,al
+      make_if_structure:
+	call	allocate_structure_data
+	mov	word [ebx],if_directive-instruction_handler
+	mov	byte [ebx+2],al
+	mov	eax,[current_line]
+	mov	[ebx+4],eax
+	jmp	instruction_assembled
+      else_true:
+	or	al,al
+	jz	missing_end_directive
+	cmp	al,0Fh
+	jne	extra_characters_on_line
+	or	al,-1
+	jmp	make_if_structure
+      else_directive:
+	cmp	[prefixed_instruction],0
+	jne	unexpected_instruction
+	mov	ax,if_directive-instruction_handler
+	call	find_structure_data
+	jc	unexpected_instruction
+	cmp	byte [ebx+2],0
+	jne	unexpected_instruction
+      found_else:
+	mov	al,[esi]
+	cmp	al,1
+	jne	skip_else
+	cmp	word [esi+1],if_directive-instruction_handler
+	jne	skip_else
+	add	esi,4
+	call	find_else
+	jnc	found_else
+	call	remove_structure_data
+	jmp	instruction_assembled
+      skip_else:
+	or	al,al
+	jz	missing_end_directive
+	cmp	al,0Fh
+	jne	extra_characters_on_line
+	call	find_end_if
+	call	remove_structure_data
+	jmp	instruction_assembled
+      end_if:
+	cmp	[prefixed_instruction],0
+	jne	unexpected_instruction
+	call	find_structure_data
+	jc	unexpected_instruction
+	call	remove_structure_data
+	jmp	instruction_assembled
+      find_else:
+	call	find_structure_end
+	cmp	ax,else_directive-instruction_handler
+	je	else_found
+	cmp	ax,if_directive-instruction_handler
+	jne	unexpected_instruction
+	stc
+	ret
+      else_found:
+	clc
+	ret
+      find_end_if:
+	call	find_structure_end
+	cmp	ax,if_directive-instruction_handler
+	jne	unexpected_instruction
+	ret
+      find_structure_end:
+	push	[error_line]
+	mov	eax,[current_line]
+	mov	[error_line],eax
+      find_end_directive:
+	call	skip_symbol
+	jnc	find_end_directive
+	lods	byte [esi]
+	cmp	al,0Fh
+	jne	no_end_directive
+	lods	dword [esi]
+	mov	[current_line],eax
+      skip_labels:
+	cmp	byte [esi],2
+	jne	labels_ok
+	add	esi,6
+	jmp	skip_labels
+      labels_ok:
+	cmp	byte [esi],1
+	jne	find_end_directive
+	mov	ax,[esi+1]
+	cmp	ax,prefix_instruction-instruction_handler
+	je	find_end_directive
+	add	esi,4
+	cmp	ax,repeat_directive-instruction_handler
+	je	skip_repeat
+	cmp	ax,while_directive-instruction_handler
+	je	skip_while
+	cmp	ax,if_directive-instruction_handler
+	je	skip_if
+	cmp	ax,else_directive-instruction_handler
+	je	structure_end
+	cmp	ax,end_directive-instruction_handler
+	jne	find_end_directive
+	cmp	byte [esi],1
+	jne	find_end_directive
+	mov	ax,[esi+1]
+	add	esi,4
+	cmp	ax,repeat_directive-instruction_handler
+	je	structure_end
+	cmp	ax,while_directive-instruction_handler
+	je	structure_end
+	cmp	ax,if_directive-instruction_handler
+	jne	find_end_directive
+      structure_end:
+	pop	[error_line]
+	ret
+      no_end_directive:
+	mov	eax,[error_line]
+	mov	[current_line],eax
+	jmp	missing_end_directive
+      skip_repeat:
+	call	find_end_repeat
+	jmp	find_end_directive
+      skip_while:
+	call	find_end_while
+	jmp	find_end_directive
+      skip_if:
+	call	skip_if_block
+	jmp	find_end_directive
+      skip_if_block:
+	call	find_else
+	jc	if_block_skipped
+	cmp	byte [esi],1
+	jne	skip_after_else
+	cmp	word [esi+1],if_directive-instruction_handler
+	jne	skip_after_else
+	add	esi,4
+	jmp	skip_if_block
+      skip_after_else:
+	call	find_end_if
+      if_block_skipped:
+	ret
+end_directive:
+	lods	byte [esi]
+	cmp	al,1
+	jne	invalid_argument
+	lods	word [esi]
+	inc	esi
+	cmp	ax,virtual_directive-instruction_handler
+	je	end_virtual
+	cmp	ax,repeat_directive-instruction_handler
+	je	end_repeat
+	cmp	ax,while_directive-instruction_handler
+	je	end_while
+	cmp	ax,if_directive-instruction_handler
+	je	end_if
+	cmp	ax,data_directive-instruction_handler
+	je	end_data
+	jmp	invalid_argument
+break_directive:
+	mov	ebx,[structures_buffer]
+	mov	al,[esi]
+	or	al,al
+	jz	find_breakable_structure
+	cmp	al,0Fh
+	jne	extra_characters_on_line
+      find_breakable_structure:
+	cmp	ebx,[additional_memory_end]
+	je	unexpected_instruction
+	mov	ax,[ebx]
+	cmp	ax,repeat_directive-instruction_handler
+	je	break_repeat
+	cmp	ax,while_directive-instruction_handler
+	je	break_while
+	cmp	ax,if_directive-instruction_handler
+	je	break_if
+	add	ebx,18h
+	jmp	find_breakable_structure
+      break_if:
+	push	[current_line]
+	mov	eax,[ebx+4]
+	mov	[current_line],eax
+	call	remove_structure_data
+	call	skip_if_block
+	pop	[current_line]
+	mov	ebx,[structures_buffer]
+	jmp	find_breakable_structure
+      break_repeat:
+	push	ebx
+	call	find_end_repeat
+	pop	ebx
+	jmp	stop_repeat
+      break_while:
+	push	ebx
+	jmp	stop_while
+
+data_bytes:
+	call	define_data
+	lods	byte [esi]
+	cmp	al,'('
+	je	get_byte
+	cmp	al,'?'
+	jne	invalid_argument
+	mov	eax,edi
+	mov	byte [edi],0
+	inc	edi
+	jmp	undefined_data
+      get_byte:
+	cmp	byte [esi],0
+	je	get_string
+	call	get_byte_value
+	stos	byte [edi]
+	ret
+      get_string:
+	inc	esi
+	lods	dword [esi]
+	mov	ecx,eax
+	lea	eax,[edi+ecx]
+	cmp	eax,[tagged_blocks]
+	ja	out_of_memory
+	rep	movs byte [edi],[esi]
+	inc	esi
+	ret
+      undefined_data:
+	mov	ebp,[addressing_space]
+	test	byte [ds:ebp+0Ah],1
+	jz	mark_undefined_data
+	ret
+      mark_undefined_data:
+	cmp	eax,[undefined_data_end]
+	je	undefined_data_ok
+	mov	[undefined_data_start],eax
+      undefined_data_ok:
+	mov	[undefined_data_end],edi
+	ret
+      define_data:
+	cmp	edi,[tagged_blocks]
+	jae	out_of_memory
+	cmp	byte [esi],'('
+	jne	simple_data_value
+	mov	ebx,esi
+	inc	esi
+	call	skip_expression
+	xchg	esi,ebx
+	cmp	byte [ebx],81h
+	jne	simple_data_value
+	inc	esi
+	call	get_count_value
+	inc	esi
+	or	eax,eax
+	jz	duplicate_zero_times
+	cmp	byte [esi],'{'
+	jne	duplicate_single_data_value
+	inc	esi
+      duplicate_data:
+	push	eax esi
+      duplicated_values:
+	cmp	edi,[tagged_blocks]
+	jae	out_of_memory
+	call	near dword [esp+8]
+	lods	byte [esi]
+	cmp	al,','
+	je	duplicated_values
+	cmp	al,'}'
+	jne	invalid_argument
+	pop	ebx eax
+	dec	eax
+	jz	data_defined
+	mov	esi,ebx
+	jmp	duplicate_data
+      duplicate_single_data_value:
+	cmp	edi,[tagged_blocks]
+	jae	out_of_memory
+	push	eax esi
+	call	near dword [esp+8]
+	pop	ebx eax
+	dec	eax
+	jz	data_defined
+	mov	esi,ebx
+	jmp	duplicate_single_data_value
+      duplicate_zero_times:
+	cmp	byte [esi],'{'
+	jne	skip_single_data_value
+	inc	esi
+      skip_data_value:
+	call	skip_symbol
+	jc	invalid_argument
+	cmp	byte [esi],'}'
+	jne	skip_data_value
+	inc	esi
+	jmp	data_defined
+      skip_single_data_value:
+	call	skip_symbol
+	jmp	data_defined
+      simple_data_value:
+	cmp	edi,[tagged_blocks]
+	jae	out_of_memory
+	call	near dword [esp]
+      data_defined:
+	lods	byte [esi]
+	cmp	al,','
+	je	define_data
+	dec	esi
+	add	esp,4
+	jmp	instruction_assembled
+data_unicode:
+	or	[base_code],-1
+	jmp	define_words
+data_words:
+	mov	[base_code],0
+      define_words:
+	call	define_data
+	lods	byte [esi]
+	cmp	al,'('
+	je	get_word
+	cmp	al,'?'
+	jne	invalid_argument
+	mov	eax,edi
+	and	word [edi],0
+	scas	word [edi]
+	jmp	undefined_data
+	ret
+      get_word:
+	cmp	[base_code],0
+	je	word_data_value
+	cmp	byte [esi],0
+	je	word_string
+      word_data_value:
+	call	get_word_value
+	call	mark_relocation
+	stos	word [edi]
+	ret
+      word_string:
+	inc	esi
+	lods	dword [esi]
+	mov	ecx,eax
+	jecxz	word_string_ok
+	lea	eax,[edi+ecx*2]
+	cmp	eax,[tagged_blocks]
+	ja	out_of_memory
+	xor	ah,ah
+      copy_word_string:
+	lods	byte [esi]
+	stos	word [edi]
+	loop	copy_word_string
+      word_string_ok:
+	inc	esi
+	ret
+data_dwords:
+	call	define_data
+	lods	byte [esi]
+	cmp	al,'('
+	je	get_dword
+	cmp	al,'?'
+	jne	invalid_argument
+	mov	eax,edi
+	and	dword [edi],0
+	scas	dword [edi]
+	jmp	undefined_data
+      get_dword:
+	push	esi
+	call	get_dword_value
+	pop	ebx
+	cmp	byte [esi],':'
+	je	complex_dword
+	call	mark_relocation
+	stos	dword [edi]
+	ret
+      complex_dword:
+	mov	esi,ebx
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_word_value
+	push	eax
+	inc	esi
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_operand
+	mov	al,[value_type]
+	push	eax
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_word_value
+	call	mark_relocation
+	stos	word [edi]
+	pop	eax
+	mov	[value_type],al
+	pop	eax
+	call	mark_relocation
+	stos	word [edi]
+	ret
+data_pwords:
+	call	define_data
+	lods	byte [esi]
+	cmp	al,'('
+	je	get_pword
+	cmp	al,'?'
+	jne	invalid_argument
+	mov	eax,edi
+	and	dword [edi],0
+	scas	dword [edi]
+	and	word [edi],0
+	scas	word [edi]
+	jmp	undefined_data
+      get_pword:
+	push	esi
+	call	get_pword_value
+	pop	ebx
+	cmp	byte [esi],':'
+	je	complex_pword
+	call	mark_relocation
+	stos	dword [edi]
+	mov	ax,dx
+	stos	word [edi]
+	ret
+      complex_pword:
+	mov	esi,ebx
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_word_value
+	push	eax
+	inc	esi
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_operand
+	mov	al,[value_type]
+	push	eax
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_dword_value
+	call	mark_relocation
+	stos	dword [edi]
+	pop	eax
+	mov	[value_type],al
+	pop	eax
+	call	mark_relocation
+	stos	word [edi]
+	ret
+data_qwords:
+	call	define_data
+	lods	byte [esi]
+	cmp	al,'('
+	je	get_qword
+	cmp	al,'?'
+	jne	invalid_argument
+	mov	eax,edi
+	and	dword [edi],0
+	scas	dword [edi]
+	and	dword [edi],0
+	scas	dword [edi]
+	jmp	undefined_data
+      get_qword:
+	call	get_qword_value
+	call	mark_relocation
+	stos	dword [edi]
+	mov	eax,edx
+	stos	dword [edi]
+	ret
+data_twords:
+	call	define_data
+	lods	byte [esi]
+	cmp	al,'('
+	je	get_tword
+	cmp	al,'?'
+	jne	invalid_argument
+	mov	eax,edi
+	and	dword [edi],0
+	scas	dword [edi]
+	and	dword [edi],0
+	scas	dword [edi]
+	and	word [edi],0
+	scas	word [edi]
+	jmp	undefined_data
+      get_tword:
+	cmp	byte [esi],'.'
+	jne	complex_tword
+	inc	esi
+	cmp	word [esi+8],8000h
+	je	fp_zero_tword
+	mov	eax,[esi]
+	stos	dword [edi]
+	mov	eax,[esi+4]
+	stos	dword [edi]
+	mov	ax,[esi+8]
+	add	ax,3FFFh
+	jo	value_out_of_range
+	cmp	ax,7FFFh
+	jge	value_out_of_range
+	cmp	ax,0
+	jg	tword_exp_ok
+	mov	cx,ax
+	neg	cx
+	inc	cx
+	cmp	cx,64
+	jae	value_out_of_range
+	cmp	cx,32
+	ja	large_shift
+	mov	eax,[esi]
+	mov	edx,[esi+4]
+	mov	ebx,edx
+	shr	edx,cl
+	shrd	eax,ebx,cl
+	jmp	tword_mantissa_shift_done
+      large_shift:
+	sub	cx,32
+	xor	edx,edx
+	mov	eax,[esi+4]
+	shr	eax,cl
+      tword_mantissa_shift_done:
+	jnc	store_shifted_mantissa
+	add	eax,1
+	adc	edx,0
+      store_shifted_mantissa:
+	mov	[edi-8],eax
+	mov	[edi-4],edx
+	xor	ax,ax
+	test	edx,1 shl 31
+	jz	tword_exp_ok
+	inc	ax
+      tword_exp_ok:
+	mov	bl,[esi+11]
+	shl	bx,15
+	or	ax,bx
+	stos	word [edi]
+	add	esi,13
+	ret
+      fp_zero_tword:
+	xor	eax,eax
+	stos	dword [edi]
+	stos	dword [edi]
+	mov	al,[esi+11]
+	shl	ax,15
+	stos	word [edi]
+	add	esi,13
+	ret
+      complex_tword:
+	call	get_word_value
+	push	eax
+	cmp	byte [esi],':'
+	jne	invalid_operand
+	inc	esi
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_operand
+	mov	al,[value_type]
+	push	eax
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_qword_value
+	call	mark_relocation
+	stos	dword [edi]
+	mov	eax,edx
+	stos	dword [edi]
+	pop	eax
+	mov	[value_type],al
+	pop	eax
+	call	mark_relocation
+	stos	word [edi]
+	ret
+data_file:
+	lods	word [esi]
+	cmp	ax,'('
+	jne	invalid_argument
+	add	esi,4
+	call	open_binary_file
+	mov	eax,[esi-4]
+	lea	esi,[esi+eax+1]
+	mov	al,2
+	xor	edx,edx
+	call	lseek
+	push	eax
+	xor	edx,edx
+	cmp	byte [esi],':'
+	jne	position_ok
+	inc	esi
+	cmp	byte [esi],'('
+	jne	invalid_argument
+	inc	esi
+	cmp	byte [esi],'.'
+	je	invalid_value
+	push	ebx
+	call	get_count_value
+	pop	ebx
+	mov	edx,eax
+	sub	[esp],edx
+	jc	value_out_of_range
+      position_ok:
+	cmp	byte [esi],','
+	jne	size_ok
+	inc	esi
+	cmp	byte [esi],'('
+	jne	invalid_argument
+	inc	esi
+	cmp	byte [esi],'.'
+	je	invalid_value
+	push	ebx edx
+	call	get_count_value
+	pop	edx ebx
+	cmp	eax,[esp]
+	ja	value_out_of_range
+	mov	[esp],eax
+      size_ok:
+	xor	al,al
+	call	lseek
+	pop	ecx
+	mov	edx,edi
+	add	edi,ecx
+	jc	out_of_memory
+	cmp	edi,[tagged_blocks]
+	ja	out_of_memory
+	call	read
+	jc	error_reading_file
+	call	close
+	lods	byte [esi]
+	cmp	al,','
+	je	data_file
+	dec	esi
+	jmp	instruction_assembled
+      open_binary_file:
+	push	esi
+	push	edi
+	mov	eax,[current_line]
+      find_current_source_path: 
+	mov	esi,[eax] 
+	test	byte [eax+7],80h 
+	jz	get_current_path 
+	mov	eax,[eax+8]
+	jmp	find_current_source_path
+      get_current_path:
+	lodsb
+	stosb
+	or	al,al
+	jnz	get_current_path
+      cut_current_path:
+	cmp	edi,[esp]
+	je	current_path_ok
+	cmp	byte [edi-1],'\'
+	je	current_path_ok
+	cmp	byte [edi-1],'/'
+	je	current_path_ok
+	dec	edi
+	jmp	cut_current_path
+      current_path_ok:
+	mov	esi,[esp+4]
+	call	expand_path
+	pop	edx
+	mov	esi,edx
+	call	open
+	jnc	file_opened
+	mov	edx,[include_paths]
+      search_in_include_paths:
+	push	edx esi
+	mov	edi,esi
+	mov	esi,[esp+4]
+	call	get_include_directory
+	mov	[esp+4],esi
+	mov	esi,[esp+8]
+	call	expand_path
+	pop	edx
+	mov	esi,edx
+	call	open
+	pop	edx
+	jnc	file_opened
+	cmp	byte [edx],0
+	jne	search_in_include_paths
+	mov	edi,esi
+	mov	esi,[esp]
+	push	edi
+	call	expand_path
+	pop	edx
+	mov	esi,edx
+	call	open
+	jc	file_not_found
+      file_opened:
+	mov	edi,esi
+	pop	esi
+	ret
+reserve_bytes:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_count_value
+	mov	ecx,eax
+	mov	edx,ecx
+	add	edx,edi
+	jc	out_of_memory
+	cmp	edx,[tagged_blocks]
+	ja	out_of_memory
+	push	edi
+	cmp	[next_pass_needed],0
+	je	zero_bytes
+	add	edi,ecx
+	jmp	reserved_data
+      zero_bytes:
+	xor	eax,eax
+	shr	ecx,1
+	jnc	bytes_stosb_ok
+	stos	byte [edi]
+      bytes_stosb_ok:
+	shr	ecx,1
+	jnc	bytes_stosw_ok
+	stos	word [edi]
+      bytes_stosw_ok:
+	rep	stos dword [edi]
+      reserved_data:
+	pop	eax
+	call	undefined_data
+	jmp	instruction_assembled
+reserve_words:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_count_value
+	mov	ecx,eax
+	mov	edx,ecx
+	shl	edx,1
+	jc	out_of_memory
+	add	edx,edi
+	jc	out_of_memory
+	cmp	edx,[tagged_blocks]
+	ja	out_of_memory
+	push	edi
+	cmp	[next_pass_needed],0
+	je	zero_words
+	lea	edi,[edi+ecx*2]
+	jmp	reserved_data
+      zero_words:
+	xor	eax,eax
+	shr	ecx,1
+	jnc	words_stosw_ok
+	stos	word [edi]
+      words_stosw_ok:
+	rep	stos dword [edi]
+	jmp	reserved_data
+reserve_dwords:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_count_value
+	mov	ecx,eax
+	mov	edx,ecx
+	shl	edx,1
+	jc	out_of_memory
+	shl	edx,1
+	jc	out_of_memory
+	add	edx,edi
+	jc	out_of_memory
+	cmp	edx,[tagged_blocks]
+	ja	out_of_memory
+	push	edi
+	cmp	[next_pass_needed],0
+	je	zero_dwords
+	lea	edi,[edi+ecx*4]
+	jmp	reserved_data
+      zero_dwords:
+	xor	eax,eax
+	rep	stos dword [edi]
+	jmp	reserved_data
+reserve_pwords:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_count_value
+	mov	ecx,eax
+	shl	ecx,1
+	jc	out_of_memory
+	add	ecx,eax
+	mov	edx,ecx
+	shl	edx,1
+	jc	out_of_memory
+	add	edx,edi
+	jc	out_of_memory
+	cmp	edx,[tagged_blocks]
+	ja	out_of_memory
+	push	edi
+	cmp	[next_pass_needed],0
+	je	zero_words
+	lea	edi,[edi+ecx*2]
+	jmp	reserved_data
+reserve_qwords:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_count_value
+	mov	ecx,eax
+	shl	ecx,1
+	jc	out_of_memory
+	mov	edx,ecx
+	shl	edx,1
+	jc	out_of_memory
+	shl	edx,1
+	jc	out_of_memory
+	add	edx,edi
+	jc	out_of_memory
+	cmp	edx,[tagged_blocks]
+	ja	out_of_memory
+	push	edi
+	cmp	[next_pass_needed],0
+	je	zero_dwords
+	lea	edi,[edi+ecx*4]
+	jmp	reserved_data
+reserve_twords:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_count_value
+	mov	ecx,eax
+	shl	ecx,2
+	jc	out_of_memory
+	add	ecx,eax
+	mov	edx,ecx
+	shl	edx,1
+	jc	out_of_memory
+	add	edx,edi
+	jc	out_of_memory
+	cmp	edx,[tagged_blocks]
+	ja	out_of_memory
+	push	edi
+	cmp	[next_pass_needed],0
+	je	zero_words
+	lea	edi,[edi+ecx*2]
+	jmp	reserved_data
+align_directive:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_argument
+	cmp	byte [esi],'.'
+	je	invalid_value
+	call	get_count_value
+	mov	edx,eax
+	dec	edx
+	test	eax,edx
+	jnz	invalid_align_value
+	or	eax,eax
+	jz	invalid_align_value
+	cmp	eax,1
+	je	instruction_assembled
+	mov	ecx,edi
+	mov	ebp,[addressing_space]
+	sub	ecx,[ds:ebp]
+	cmp	dword [ds:ebp+10h],0
+	jne	section_not_aligned_enough
+	cmp	byte [ds:ebp+9],0
+	je	make_alignment
+	cmp	[output_format],3
+	je	pe_alignment
+	mov	ebx,[ds:ebp+14h]
+	cmp	byte [ebx],0
+	jne	section_not_aligned_enough
+	cmp	eax,[ebx+10h]
+	jbe	make_alignment
+	jmp	section_not_aligned_enough
+      pe_alignment:
+	cmp	eax,1000h
+	ja	section_not_aligned_enough
+      make_alignment:
+	dec	eax
+	and	ecx,eax
+	jz	instruction_assembled
+	neg	ecx
+	add	ecx,eax
+	inc	ecx
+	mov	edx,ecx
+	add	edx,edi
+	jc	out_of_memory
+	cmp	edx,[tagged_blocks]
+	ja	out_of_memory
+	push	edi
+	cmp	[next_pass_needed],0
+	je	nops
+	add	edi,ecx
+	jmp	reserved_data
+      invalid_align_value:
+	cmp	[error_line],0
+	jne	instruction_assembled
+	mov	eax,[current_line]
+	mov	[error_line],eax
+	mov	[error],invalid_value
+	jmp	instruction_assembled
+      nops:
+	mov	eax,90909090h
+	shr	ecx,1
+	jnc	nops_stosb_ok
+	stos	byte [edi]
+      nops_stosb_ok:
+	shr	ecx,1
+	jnc	nops_stosw_ok
+	stos	word [edi]
+      nops_stosw_ok:
+	rep	stos dword [edi]
+	jmp	reserved_data
+err_directive:
+	mov	al,[esi]
+	cmp	al,0Fh
+	je	invoked_error
+	or	al,al
+	jz	invoked_error
+	jmp	extra_characters_on_line
+assert_directive:
+	call	calculate_logical_expression
+	or	al,al
+	jnz	instruction_assembled
+	cmp	[error_line],0
+	jne	instruction_assembled
+	mov	eax,[current_line]
+	mov	[error_line],eax
+	mov	[error],assertion_failed
+	jmp	instruction_assembled
diff --git a/samples/Assembly/FASM.asm b/samples/Assembly/FASM.asm
new file mode 100644
index 00000000..9a2201ae
--- /dev/null
+++ b/samples/Assembly/FASM.asm
@@ -0,0 +1,350 @@
+
+; flat assembler interface for Win32
+; Copyright (c) 1999-2014, Tomasz Grysztar.
+; All rights reserved.
+
+	format	PE console
+
+section '.text' code readable executable
+
+start:
+
+	mov	[con_handle],STD_OUTPUT_HANDLE
+	mov	esi,_logo
+	call	display_string
+
+	call	get_params
+	jc	information
+
+	call	init_memory
+
+	mov	esi,_memory_prefix
+	call	display_string
+	mov	eax,[memory_end]
+	sub	eax,[memory_start]
+	add	eax,[additional_memory_end]
+	sub	eax,[additional_memory]
+	shr	eax,10
+	call	display_number
+	mov	esi,_memory_suffix
+	call	display_string
+
+	call	[GetTickCount]
+	mov	[start_time],eax
+
+	call	preprocessor
+	call	parser
+	call	assembler
+	call	formatter
+
+	call	display_user_messages
+	movzx	eax,[current_pass]
+	inc	eax
+	call	display_number
+	mov	esi,_passes_suffix
+	call	display_string
+	call	[GetTickCount]
+	sub	eax,[start_time]
+	xor	edx,edx
+	mov	ebx,100
+	div	ebx
+	or	eax,eax
+	jz	display_bytes_count
+	xor	edx,edx
+	mov	ebx,10
+	div	ebx
+	push	edx
+	call	display_number
+	mov	dl,'.'
+	call	display_character
+	pop	eax
+	call	display_number
+	mov	esi,_seconds_suffix
+	call	display_string
+      display_bytes_count:
+	mov	eax,[written_size]
+	call	display_number
+	mov	esi,_bytes_suffix
+	call	display_string
+	xor	al,al
+	jmp	exit_program
+
+information:
+	mov	esi,_usage
+	call	display_string
+	mov	al,1
+	jmp	exit_program
+
+get_params:
+	mov	[input_file],0
+	mov	[output_file],0
+	mov	[symbols_file],0
+	mov	[memory_setting],0
+	mov	[passes_limit],100
+	call	[GetCommandLine]
+	mov	esi,eax
+	mov	edi,params
+    find_command_start:
+	lodsb
+	cmp	al,20h
+	je	find_command_start
+	cmp	al,22h
+	je	skip_quoted_name
+    skip_name:
+	lodsb
+	cmp	al,20h
+	je	find_param
+	or	al,al
+	jz	all_params
+	jmp	skip_name
+    skip_quoted_name:
+	lodsb
+	cmp	al,22h
+	je	find_param
+	or	al,al
+	jz	all_params
+	jmp	skip_quoted_name
+    find_param:
+	lodsb
+	cmp	al,20h
+	je	find_param
+	cmp	al,'-'
+	je	option_param
+	cmp	al,0Dh
+	je	all_params
+	or	al,al
+	jz	all_params
+	cmp	[input_file],0
+	jne	get_output_file
+	mov	[input_file],edi
+	jmp	process_param
+      get_output_file:
+	cmp	[output_file],0
+	jne	bad_params
+	mov	[output_file],edi
+    process_param:
+	cmp	al,22h
+	je	string_param
+    copy_param:
+	stosb
+	lodsb
+	cmp	al,20h
+	je	param_end
+	cmp	al,0Dh
+	je	param_end
+	or	al,al
+	jz	param_end
+	jmp	copy_param
+    string_param:
+	lodsb
+	cmp	al,22h
+	je	string_param_end
+	cmp	al,0Dh
+	je	param_end
+	or	al,al
+	jz	param_end
+	stosb
+	jmp	string_param
+    option_param:
+	lodsb
+	cmp	al,'m'
+	je	memory_option
+	cmp	al,'M'
+	je	memory_option
+	cmp	al,'p'
+	je	passes_option
+	cmp	al,'P'
+	je	passes_option
+	cmp	al,'s'
+	je	symbols_option
+	cmp	al,'S'
+	je	symbols_option
+    bad_params:
+	stc
+	ret
+    get_option_value:
+	xor	eax,eax
+	mov	edx,eax
+    get_option_digit:
+	lodsb
+	cmp	al,20h
+	je	option_value_ok
+	cmp	al,0Dh
+	je	option_value_ok
+	or	al,al
+	jz	option_value_ok
+	sub	al,30h
+	jc	invalid_option_value
+	cmp	al,9
+	ja	invalid_option_value
+	imul	edx,10
+	jo	invalid_option_value
+	add	edx,eax
+	jc	invalid_option_value
+	jmp	get_option_digit
+    option_value_ok:
+	dec	esi
+	clc
+	ret
+    invalid_option_value:
+	stc
+	ret
+    memory_option:
+	lodsb
+	cmp	al,20h
+	je	memory_option
+	cmp	al,0Dh
+	je	bad_params
+	or	al,al
+	jz	bad_params
+	dec	esi
+	call	get_option_value
+	or	edx,edx
+	jz	bad_params
+	cmp	edx,1 shl (32-10)
+	jae	bad_params
+	mov	[memory_setting],edx
+	jmp	find_param
+    passes_option:
+	lodsb
+	cmp	al,20h
+	je	passes_option
+	cmp	al,0Dh
+	je	bad_params
+	or	al,al
+	jz	bad_params
+	dec	esi
+	call	get_option_value
+	or	edx,edx
+	jz	bad_params
+	cmp	edx,10000h
+	ja	bad_params
+	mov	[passes_limit],dx
+	jmp	find_param
+    symbols_option:
+	mov	[symbols_file],edi
+      find_symbols_file_name:
+	lodsb
+	cmp	al,20h
+	jne	process_param
+	jmp	find_symbols_file_name
+    param_end:
+	dec	esi
+    string_param_end:
+	xor	al,al
+	stosb
+	jmp	find_param
+    all_params:
+	cmp	[input_file],0
+	je	bad_params
+	clc
+	ret
+
+include 'system.inc'
+
+include '..\errors.inc'
+include '..\symbdump.inc'
+include '..\preproce.inc'
+include '..\parser.inc'
+include '..\exprpars.inc'
+include '..\assemble.inc'
+include '..\exprcalc.inc'
+include '..\formats.inc'
+include '..\x86_64.inc'
+include '..\avx.inc'
+
+include '..\tables.inc'
+include '..\messages.inc'
+
+section '.data' data readable writeable
+
+include '..\version.inc'
+
+_copyright db 'Copyright (c) 1999-2014, Tomasz Grysztar',0Dh,0Ah,0
+
+_logo db 'flat assembler  version ',VERSION_STRING,0
+_usage db 0Dh,0Ah
+       db 'usage: fasm <source> [output]',0Dh,0Ah
+       db 'optional settings:',0Dh,0Ah
+       db ' -m <limit>    set the limit in kilobytes for the available memory',0Dh,0Ah
+       db ' -p <limit>    set the maximum allowed number of passes',0Dh,0Ah
+       db ' -s <file>     dump symbolic information for debugging',0Dh,0Ah
+       db 0
+_memory_prefix db '  (',0
+_memory_suffix db ' kilobytes memory)',0Dh,0Ah,0
+_passes_suffix db ' passes, ',0
+_seconds_suffix db ' seconds, ',0
+_bytes_suffix db ' bytes.',0Dh,0Ah,0
+
+align 4
+
+include '..\variable.inc'
+
+con_handle dd ?
+memory_setting dd ?
+start_time dd ?
+bytes_count dd ?
+displayed_count dd ?
+character db ?
+last_displayed rb 2
+
+params rb 1000h
+options rb 1000h
+buffer rb 4000h
+
+stack 10000h
+
+section '.idata' import data readable writeable
+
+  dd 0,0,0,rva kernel_name,rva kernel_table
+  dd 0,0,0,0,0
+
+  kernel_table:
+    ExitProcess dd rva _ExitProcess
+    CreateFile dd rva _CreateFileA
+    ReadFile dd rva _ReadFile
+    WriteFile dd rva _WriteFile
+    CloseHandle dd rva _CloseHandle
+    SetFilePointer dd rva _SetFilePointer
+    GetCommandLine dd rva _GetCommandLineA
+    GetEnvironmentVariable dd rva _GetEnvironmentVariable
+    GetStdHandle dd rva _GetStdHandle
+    VirtualAlloc dd rva _VirtualAlloc
+    VirtualFree dd rva _VirtualFree
+    GetTickCount dd rva _GetTickCount
+    GetSystemTime dd rva _GetSystemTime
+    GlobalMemoryStatus dd rva _GlobalMemoryStatus
+    dd 0
+
+  kernel_name db 'KERNEL32.DLL',0
+
+  _ExitProcess dw 0
+    db 'ExitProcess',0
+  _CreateFileA dw 0
+    db 'CreateFileA',0
+  _ReadFile dw 0
+    db 'ReadFile',0
+  _WriteFile dw 0
+    db 'WriteFile',0
+  _CloseHandle dw 0
+    db 'CloseHandle',0
+  _SetFilePointer dw 0
+    db 'SetFilePointer',0
+  _GetCommandLineA dw 0
+    db 'GetCommandLineA',0
+  _GetEnvironmentVariable dw 0
+    db 'GetEnvironmentVariableA',0
+  _GetStdHandle dw 0
+    db 'GetStdHandle',0
+  _VirtualAlloc dw 0
+    db 'VirtualAlloc',0
+  _VirtualFree dw 0
+    db 'VirtualFree',0
+  _GetTickCount dw 0
+    db 'GetTickCount',0
+  _GetSystemTime dw 0
+    db 'GetSystemTime',0
+  _GlobalMemoryStatus dw 0
+    db 'GlobalMemoryStatus',0
+
+section '.reloc' fixups data readable discardable
diff --git a/samples/Assembly/SYSTEM.inc b/samples/Assembly/SYSTEM.inc
new file mode 100644
index 00000000..77a61d29
--- /dev/null
+++ b/samples/Assembly/SYSTEM.inc
@@ -0,0 +1,503 @@
+
+; flat assembler interface for Win32
+; Copyright (c) 1999-2014, Tomasz Grysztar.
+; All rights reserved.
+
+CREATE_NEW	       = 1
+CREATE_ALWAYS	       = 2
+OPEN_EXISTING	       = 3
+OPEN_ALWAYS	       = 4
+TRUNCATE_EXISTING      = 5
+
+FILE_SHARE_READ        = 1
+FILE_SHARE_WRITE       = 2
+FILE_SHARE_DELETE      = 4
+
+GENERIC_READ	       = 80000000h
+GENERIC_WRITE	       = 40000000h
+
+STD_INPUT_HANDLE       = 0FFFFFFF6h
+STD_OUTPUT_HANDLE      = 0FFFFFFF5h
+STD_ERROR_HANDLE       = 0FFFFFFF4h
+
+MEM_COMMIT	       = 1000h
+MEM_RESERVE	       = 2000h
+MEM_DECOMMIT	       = 4000h
+MEM_RELEASE	       = 8000h
+MEM_FREE	       = 10000h
+MEM_PRIVATE	       = 20000h
+MEM_MAPPED	       = 40000h
+MEM_RESET	       = 80000h
+MEM_TOP_DOWN	       = 100000h
+
+PAGE_NOACCESS	       = 1
+PAGE_READONLY	       = 2
+PAGE_READWRITE	       = 4
+PAGE_WRITECOPY	       = 8
+PAGE_EXECUTE	       = 10h
+PAGE_EXECUTE_READ      = 20h
+PAGE_EXECUTE_READWRITE = 40h
+PAGE_EXECUTE_WRITECOPY = 80h
+PAGE_GUARD	       = 100h
+PAGE_NOCACHE	       = 200h
+
+init_memory:
+	xor	eax,eax
+	mov	[memory_start],eax
+	mov	eax,esp
+	and	eax,not 0FFFh
+	add	eax,1000h-10000h
+	mov	[stack_limit],eax
+	mov	eax,[memory_setting]
+	shl	eax,10
+	jnz	allocate_memory
+	push	buffer
+	call	[GlobalMemoryStatus]
+	mov	eax,dword [buffer+20]
+	mov	edx,dword [buffer+12]
+	cmp	eax,0
+	jl	large_memory
+	cmp	edx,0
+	jl	large_memory
+	shr	eax,2
+	add	eax,edx
+	jmp	allocate_memory
+    large_memory:
+	mov	eax,80000000h
+    allocate_memory:
+	mov	edx,eax
+	shr	edx,2
+	mov	ecx,eax
+	sub	ecx,edx
+	mov	[memory_end],ecx
+	mov	[additional_memory_end],edx
+	push	PAGE_READWRITE
+	push	MEM_COMMIT
+	push	eax
+	push	0
+	call	[VirtualAlloc]
+	or	eax,eax
+	jz	not_enough_memory
+	mov	[memory_start],eax
+	add	eax,[memory_end]
+	mov	[memory_end],eax
+	mov	[additional_memory],eax
+	add	[additional_memory_end],eax
+	ret
+    not_enough_memory:
+	mov	eax,[additional_memory_end]
+	shl	eax,1
+	cmp	eax,4000h
+	jb	out_of_memory
+	jmp	allocate_memory
+
+exit_program:
+	movzx	eax,al
+	push	eax
+	mov	eax,[memory_start]
+	test	eax,eax
+	jz	do_exit
+	push	MEM_RELEASE
+	push	0
+	push	eax
+	call	[VirtualFree]
+    do_exit:
+	call	[ExitProcess]
+
+get_environment_variable:
+	mov	ecx,[memory_end]
+	sub	ecx,edi
+	cmp	ecx,4000h
+	jbe	buffer_for_variable_ok
+	mov	ecx,4000h
+    buffer_for_variable_ok:
+	push	ecx
+	push	edi
+	push	esi
+	call	[GetEnvironmentVariable]
+	add	edi,eax
+	cmp	edi,[memory_end]
+	jae	out_of_memory
+	ret
+
+open:
+	push	0
+	push	0
+	push	OPEN_EXISTING
+	push	0
+	push	FILE_SHARE_READ
+	push	GENERIC_READ
+	push	edx
+	call	[CreateFile]
+	cmp	eax,-1
+	je	file_error
+	mov	ebx,eax
+	clc
+	ret
+    file_error:
+	stc
+	ret
+create:
+	push	0
+	push	0
+	push	CREATE_ALWAYS
+	push	0
+	push	FILE_SHARE_READ
+	push	GENERIC_WRITE
+	push	edx
+	call	[CreateFile]
+	cmp	eax,-1
+	je	file_error
+	mov	ebx,eax
+	clc
+	ret
+write:
+	push	0
+	push	bytes_count
+	push	ecx
+	push	edx
+	push	ebx
+	call	[WriteFile]
+	or	eax,eax
+	jz	file_error
+	clc
+	ret
+read:
+	mov	ebp,ecx
+	push	0
+	push	bytes_count
+	push	ecx
+	push	edx
+	push	ebx
+	call	[ReadFile]
+	or	eax,eax
+	jz	file_error
+	cmp	ebp,[bytes_count]
+	jne	file_error
+	clc
+	ret
+close:
+	push	ebx
+	call	[CloseHandle]
+	ret
+lseek:
+	movzx	eax,al
+	push	eax
+	push	0
+	push	edx
+	push	ebx
+	call	[SetFilePointer]
+	ret
+
+display_string:
+	push	[con_handle]
+	call	[GetStdHandle]
+	mov	ebp,eax
+	mov	edi,esi
+	or	ecx,-1
+	xor	al,al
+	repne	scasb
+	neg	ecx
+	sub	ecx,2
+	push	0
+	push	bytes_count
+	push	ecx
+	push	esi
+	push	ebp
+	call	[WriteFile]
+	ret
+display_character:
+	push	ebx
+	mov	[character],dl
+	push	[con_handle]
+	call	[GetStdHandle]
+	mov	ebx,eax
+	push	0
+	push	bytes_count
+	push	1
+	push	character
+	push	ebx
+	call	[WriteFile]
+	pop	ebx
+	ret
+display_number:
+	push	ebx
+	mov	ecx,1000000000
+	xor	edx,edx
+	xor	bl,bl
+      display_loop:
+	div	ecx
+	push	edx
+	cmp	ecx,1
+	je	display_digit
+	or	bl,bl
+	jnz	display_digit
+	or	al,al
+	jz	digit_ok
+	not	bl
+      display_digit:
+	mov	dl,al
+	add	dl,30h
+	push	ecx
+	call	display_character
+	pop	ecx
+      digit_ok:
+	mov	eax,ecx
+	xor	edx,edx
+	mov	ecx,10
+	div	ecx
+	mov	ecx,eax
+	pop	eax
+	or	ecx,ecx
+	jnz	display_loop
+	pop	ebx
+	ret
+
+display_user_messages:
+	mov	[displayed_count],0
+	call	show_display_buffer
+	cmp	[displayed_count],1
+	jb	line_break_ok
+	je	make_line_break
+	mov	ax,word [last_displayed]
+	cmp	ax,0A0Dh
+	je	line_break_ok
+	cmp	ax,0D0Ah
+	je	line_break_ok
+      make_line_break:
+	mov	word [buffer],0A0Dh
+	push	[con_handle]
+	call	[GetStdHandle]
+	push	0
+	push	bytes_count
+	push	2
+	push	buffer
+	push	eax
+	call	[WriteFile]
+      line_break_ok:
+	ret
+display_block:
+	add	[displayed_count],ecx
+	cmp	ecx,1
+	ja	take_last_two_characters
+	jb	block_displayed
+	mov	al,[last_displayed+1]
+	mov	ah,[esi]
+	mov	word [last_displayed],ax
+	jmp	block_ok
+      take_last_two_characters:
+	mov	ax,[esi+ecx-2]
+	mov	word [last_displayed],ax
+      block_ok:
+	push	ecx
+	push	[con_handle]
+	call	[GetStdHandle]
+	pop	ecx
+	push	0
+	push	bytes_count
+	push	ecx
+	push	esi
+	push	eax
+	call	[WriteFile]
+      block_displayed:
+	ret
+
+fatal_error:
+	mov	[con_handle],STD_ERROR_HANDLE
+	mov	esi,error_prefix
+	call	display_string
+	pop	esi
+	call	display_string
+	mov	esi,error_suffix
+	call	display_string
+	mov	al,0FFh
+	jmp	exit_program
+assembler_error:
+	mov	[con_handle],STD_ERROR_HANDLE
+	call	display_user_messages
+	push	dword 0
+	mov	ebx,[current_line]
+      get_error_lines:
+	mov	eax,[ebx]
+	cmp	byte [eax],0
+	je	get_next_error_line
+	push	ebx
+	test	byte [ebx+7],80h
+	jz	display_error_line
+	mov	edx,ebx
+      find_definition_origin:
+	mov	edx,[edx+12]
+	test	byte [edx+7],80h
+	jnz	find_definition_origin
+	push	edx
+      get_next_error_line:
+	mov	ebx,[ebx+8]
+	jmp	get_error_lines
+      display_error_line:
+	mov	esi,[ebx]
+	call	display_string
+	mov	esi,line_number_start
+	call	display_string
+	mov	eax,[ebx+4]
+	and	eax,7FFFFFFFh
+	call	display_number
+	mov	dl,']'
+	call	display_character
+	pop	esi
+	cmp	ebx,esi
+	je	line_number_ok
+	mov	dl,20h
+	call	display_character
+	push	esi
+	mov	esi,[esi]
+	movzx	ecx,byte [esi]
+	inc	esi
+	call	display_block
+	mov	esi,line_number_start
+	call	display_string
+	pop	esi
+	mov	eax,[esi+4]
+	and	eax,7FFFFFFFh
+	call	display_number
+	mov	dl,']'
+	call	display_character
+      line_number_ok:
+	mov	esi,line_data_start
+	call	display_string
+	mov	esi,ebx
+	mov	edx,[esi]
+	call	open
+	mov	al,2
+	xor	edx,edx
+	call	lseek
+	mov	edx,[esi+8]
+	sub	eax,edx
+	jz	line_data_displayed
+	push	eax
+	xor	al,al
+	call	lseek
+	mov	ecx,[esp]
+	mov	edx,[additional_memory]
+	lea	eax,[edx+ecx]
+	cmp	eax,[additional_memory_end]
+	ja	out_of_memory
+	call	read
+	call	close
+	pop	ecx
+	mov	esi,[additional_memory]
+      get_line_data:
+	mov	al,[esi]
+	cmp	al,0Ah
+	je	display_line_data
+	cmp	al,0Dh
+	je	display_line_data
+	cmp	al,1Ah
+	je	display_line_data
+	or	al,al
+	jz	display_line_data
+	inc	esi
+	loop	get_line_data
+      display_line_data:
+	mov	ecx,esi
+	mov	esi,[additional_memory]
+	sub	ecx,esi
+	call	display_block
+      line_data_displayed:
+	mov	esi,cr_lf
+	call	display_string
+	pop	ebx
+	or	ebx,ebx
+	jnz	display_error_line
+	mov	esi,error_prefix
+	call	display_string
+	pop	esi
+	call	display_string
+	mov	esi,error_suffix
+	call	display_string
+	mov	al,2
+	jmp	exit_program
+
+make_timestamp:
+	push	buffer
+	call	[GetSystemTime]
+	movzx	ecx,word [buffer]
+	mov	eax,ecx
+	sub	eax,1970
+	mov	ebx,365
+	mul	ebx
+	mov	ebp,eax
+	mov	eax,ecx
+	sub	eax,1969
+	shr	eax,2
+	add	ebp,eax
+	mov	eax,ecx
+	sub	eax,1901
+	mov	ebx,100
+	div	ebx
+	sub	ebp,eax
+	mov	eax,ecx
+	xor	edx,edx
+	sub	eax,1601
+	mov	ebx,400
+	div	ebx
+	add	ebp,eax
+	movzx	ecx,word [buffer+2]
+	mov	eax,ecx
+	dec	eax
+	mov	ebx,30
+	mul	ebx
+	add	ebp,eax
+	cmp	ecx,8
+	jbe	months_correction
+	mov	eax,ecx
+	sub	eax,7
+	shr	eax,1
+	add	ebp,eax
+	mov	ecx,8
+      months_correction:
+	mov	eax,ecx
+	shr	eax,1
+	add	ebp,eax
+	cmp	ecx,2
+	jbe	day_correction_ok
+	sub	ebp,2
+	movzx	ecx,word [buffer]
+	test	ecx,11b
+	jnz	day_correction_ok
+	xor	edx,edx
+	mov	eax,ecx
+	mov	ebx,100
+	div	ebx
+	or	edx,edx
+	jnz	day_correction
+	mov	eax,ecx
+	mov	ebx,400
+	div	ebx
+	or	edx,edx
+	jnz	day_correction_ok
+      day_correction:
+	inc	ebp
+      day_correction_ok:
+	movzx	eax,word [buffer+6]
+	dec	eax
+	add	eax,ebp
+	mov	ebx,24
+	mul	ebx
+	movzx	ecx,word [buffer+8]
+	add	eax,ecx
+	mov	ebx,60
+	mul	ebx
+	movzx	ecx,word [buffer+10]
+	add	eax,ecx
+	mov	ebx,60
+	mul	ebx
+	movzx	ecx,word [buffer+12]
+	add	eax,ecx
+	adc	edx,0
+	ret
+
+error_prefix db 'error: ',0
+error_suffix db '.'
+cr_lf db 0Dh,0Ah,0
+line_number_start db ' [',0
+line_data_start db ':',0Dh,0Ah,0
diff --git a/samples/Assembly/X86_64.inc b/samples/Assembly/X86_64.inc
new file mode 100644
index 00000000..28413065
--- /dev/null
+++ b/samples/Assembly/X86_64.inc
@@ -0,0 +1,7060 @@
+
+; flat assembler core
+; Copyright (c) 1999-2014, Tomasz Grysztar.
+; All rights reserved.
+
+simple_instruction_except64:
+	cmp	[code_type],64
+	je	illegal_instruction
+simple_instruction:
+	stos	byte [edi]
+	jmp	instruction_assembled
+simple_instruction_only64:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	jmp	simple_instruction
+simple_instruction_16bit_except64:
+	cmp	[code_type],64
+	je	illegal_instruction
+simple_instruction_16bit:
+	cmp	[code_type],16
+	jne	size_prefix
+	stos	byte [edi]
+	jmp	instruction_assembled
+      size_prefix:
+	mov	ah,al
+	mov	al,66h
+	stos	word [edi]
+	jmp	instruction_assembled
+simple_instruction_32bit_except64:
+	cmp	[code_type],64
+	je	illegal_instruction
+simple_instruction_32bit:
+	cmp	[code_type],16
+	je	size_prefix
+	stos	byte [edi]
+	jmp	instruction_assembled
+iret_instruction:
+	cmp	[code_type],64
+	jne	simple_instruction
+simple_instruction_64bit:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	mov	ah,al
+	mov	al,48h
+	stos	word [edi]
+	jmp	instruction_assembled
+simple_extended_instruction_64bit:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	mov	byte [edi],48h
+	inc	edi
+simple_extended_instruction:
+	mov	ah,al
+	mov	al,0Fh
+	stos	word [edi]
+	jmp	instruction_assembled
+prefix_instruction:
+	stos	byte [edi]
+	or	[prefixed_instruction],-1
+	jmp	continue_line
+segment_prefix:
+	mov	ah,al
+	shr	ah,4
+	cmp	ah,6
+	jne	illegal_instruction
+	and	al,1111b
+	mov	[segment_register],al
+	call	store_segment_prefix
+	or	[prefixed_instruction],-1
+	jmp	continue_line
+int_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	ah,1
+	ja	invalid_operand_size
+	cmp	al,'('
+	jne	invalid_operand
+	call	get_byte_value
+	test	eax,eax
+	jns	int_imm_ok
+	call	recoverable_overflow
+      int_imm_ok:
+	mov	ah,al
+	mov	al,0CDh
+	stos	word [edi]
+	jmp	instruction_assembled
+aa_instruction:
+	cmp	[code_type],64
+	je	illegal_instruction
+	push	eax
+	mov	bl,10
+	cmp	byte [esi],'('
+	jne	aa_store
+	inc	esi
+	xor	al,al
+	xchg	al,[operand_size]
+	cmp	al,1
+	ja	invalid_operand_size
+	call	get_byte_value
+	mov	bl,al
+      aa_store:
+	cmp	[operand_size],0
+	jne	invalid_operand
+	pop	eax
+	mov	ah,bl
+	stos	word [edi]
+	jmp	instruction_assembled
+
+basic_instruction:
+	mov	[base_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	basic_reg
+	cmp	al,'['
+	jne	invalid_operand
+      basic_mem:
+	call	get_address
+	push	edx ebx ecx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	je	basic_mem_imm
+	cmp	al,10h
+	jne	invalid_operand
+      basic_mem_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	mov	al,ah
+	cmp	al,1
+	je	instruction_ready
+	call	operand_autodetect
+	inc	[base_code]
+      instruction_ready:
+	call	store_instruction
+	jmp	instruction_assembled
+      basic_mem_imm:
+	mov	al,[operand_size]
+	cmp	al,1
+	jb	basic_mem_imm_nosize
+	je	basic_mem_imm_8bit
+	cmp	al,2
+	je	basic_mem_imm_16bit
+	cmp	al,4
+	je	basic_mem_imm_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      basic_mem_imm_64bit:
+	cmp	[size_declared],0
+	jne	long_immediate_not_encodable
+	call	operand_64bit
+	call	get_simm32
+	cmp	[value_type],4
+	jae	long_immediate_not_encodable
+	jmp	basic_mem_imm_32bit_ok
+      basic_mem_imm_nosize:
+	call	recoverable_unknown_size
+      basic_mem_imm_8bit:
+	call	get_byte_value
+	mov	byte [value],al
+	mov	al,[base_code]
+	shr	al,3
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	mov	[base_code],80h
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      basic_mem_imm_16bit:
+	call	operand_16bit
+	call	get_word_value
+	mov	word [value],ax
+	mov	al,[base_code]
+	shr	al,3
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	cmp	[value_type],0
+	jne	basic_mem_imm_16bit_store
+	cmp	[size_declared],0
+	jne	basic_mem_imm_16bit_store
+	cmp	word [value],80h
+	jb	basic_mem_simm_8bit
+	cmp	word [value],-80h
+	jae	basic_mem_simm_8bit
+      basic_mem_imm_16bit_store:
+	mov	[base_code],81h
+	call	store_instruction_with_imm16
+	jmp	instruction_assembled
+      basic_mem_simm_8bit:
+	mov	[base_code],83h
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      basic_mem_imm_32bit:
+	call	operand_32bit
+	call	get_dword_value
+      basic_mem_imm_32bit_ok:
+	mov	dword [value],eax
+	mov	al,[base_code]
+	shr	al,3
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	cmp	[value_type],0
+	jne	basic_mem_imm_32bit_store
+	cmp	[size_declared],0
+	jne	basic_mem_imm_32bit_store
+	cmp	dword [value],80h
+	jb	basic_mem_simm_8bit
+	cmp	dword [value],-80h
+	jae	basic_mem_simm_8bit
+      basic_mem_imm_32bit_store:
+	mov	[base_code],81h
+	call	store_instruction_with_imm32
+	jmp	instruction_assembled
+      get_simm32:
+	call	get_qword_value
+	mov	ecx,edx
+	cdq
+	cmp	ecx,edx
+	jne	value_out_of_range
+	cmp	[value_type],4
+	jne	get_simm32_ok
+	mov	[value_type],2
+      get_simm32_ok:
+	ret
+      basic_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	basic_reg_reg
+	cmp	al,'('
+	je	basic_reg_imm
+	cmp	al,'['
+	jne	invalid_operand
+      basic_reg_mem:
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,1
+	je	basic_reg_mem_8bit
+	call	operand_autodetect
+	add	[base_code],3
+	jmp	instruction_ready
+      basic_reg_mem_8bit:
+	add	[base_code],2
+	jmp	instruction_ready
+      basic_reg_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,[postbyte_register]
+	mov	[postbyte_register],al
+	mov	al,ah
+	cmp	al,1
+	je	nomem_instruction_ready
+	call	operand_autodetect
+	inc	[base_code]
+      nomem_instruction_ready:
+	call	store_nomem_instruction
+	jmp	instruction_assembled
+      basic_reg_imm:
+	mov	al,[operand_size]
+	cmp	al,1
+	je	basic_reg_imm_8bit
+	cmp	al,2
+	je	basic_reg_imm_16bit
+	cmp	al,4
+	je	basic_reg_imm_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      basic_reg_imm_64bit:
+	cmp	[size_declared],0
+	jne	long_immediate_not_encodable
+	call	operand_64bit
+	call	get_simm32
+	cmp	[value_type],4
+	jae	long_immediate_not_encodable
+	jmp	basic_reg_imm_32bit_ok
+      basic_reg_imm_8bit:
+	call	get_byte_value
+	mov	dl,al
+	mov	bl,[base_code]
+	shr	bl,3
+	xchg	bl,[postbyte_register]
+	or	bl,bl
+	jz	basic_al_imm
+	mov	[base_code],80h
+	call	store_nomem_instruction
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      basic_al_imm:
+	mov	al,[base_code]
+	add	al,4
+	stos	byte [edi]
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      basic_reg_imm_16bit:
+	call	operand_16bit
+	call	get_word_value
+	mov	dx,ax
+	mov	bl,[base_code]
+	shr	bl,3
+	xchg	bl,[postbyte_register]
+	cmp	[value_type],0
+	jne	basic_reg_imm_16bit_store
+	cmp	[size_declared],0
+	jne	basic_reg_imm_16bit_store
+	cmp	dx,80h
+	jb	basic_reg_simm_8bit
+	cmp	dx,-80h
+	jae	basic_reg_simm_8bit
+      basic_reg_imm_16bit_store:
+	or	bl,bl
+	jz	basic_ax_imm
+	mov	[base_code],81h
+	call	store_nomem_instruction
+      basic_store_imm_16bit:
+	mov	ax,dx
+	call	mark_relocation
+	stos	word [edi]
+	jmp	instruction_assembled
+      basic_reg_simm_8bit:
+	mov	[base_code],83h
+	call	store_nomem_instruction
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      basic_ax_imm:
+	add	[base_code],5
+	call	store_instruction_code
+	jmp	basic_store_imm_16bit
+      basic_reg_imm_32bit:
+	call	operand_32bit
+	call	get_dword_value
+      basic_reg_imm_32bit_ok:
+	mov	edx,eax
+	mov	bl,[base_code]
+	shr	bl,3
+	xchg	bl,[postbyte_register]
+	cmp	[value_type],0
+	jne	basic_reg_imm_32bit_store
+	cmp	[size_declared],0
+	jne	basic_reg_imm_32bit_store
+	cmp	edx,80h
+	jb	basic_reg_simm_8bit
+	cmp	edx,-80h
+	jae	basic_reg_simm_8bit
+      basic_reg_imm_32bit_store:
+	or	bl,bl
+	jz	basic_eax_imm
+	mov	[base_code],81h
+	call	store_nomem_instruction
+      basic_store_imm_32bit:
+	mov	eax,edx
+	call	mark_relocation
+	stos	dword [edi]
+	jmp	instruction_assembled
+      basic_eax_imm:
+	add	[base_code],5
+	call	store_instruction_code
+	jmp	basic_store_imm_32bit
+      recoverable_unknown_size:
+	cmp	[error_line],0
+	jne	ignore_unknown_size
+	push	[current_line]
+	pop	[error_line]
+	mov	[error],operand_size_not_specified
+      ignore_unknown_size:
+	ret
+single_operand_instruction:
+	mov	[base_code],0F6h
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	single_reg
+	cmp	al,'['
+	jne	invalid_operand
+      single_mem:
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,1
+	je	single_mem_8bit
+	jb	single_mem_nosize
+	call	operand_autodetect
+	inc	[base_code]
+	jmp	instruction_ready
+      single_mem_nosize:
+	call	recoverable_unknown_size
+      single_mem_8bit:
+	jmp	instruction_ready
+      single_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,ah
+	cmp	al,1
+	je	single_reg_8bit
+	call	operand_autodetect
+	inc	[base_code]
+      single_reg_8bit:
+	jmp	nomem_instruction_ready
+mov_instruction:
+	mov	[base_code],88h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	mov_reg
+	cmp	al,'['
+	jne	invalid_operand
+      mov_mem:
+	call	get_address
+	push	edx ebx ecx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	je	mov_mem_imm
+	cmp	al,10h
+	jne	invalid_operand
+      mov_mem_reg:
+	lods	byte [esi]
+	cmp	al,60h
+	jb	mov_mem_general_reg
+	cmp	al,70h
+	jb	mov_mem_sreg
+      mov_mem_general_reg:
+	call	convert_register
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	cmp	ah,1
+	je	mov_mem_reg_8bit
+	mov	al,ah
+	call	operand_autodetect
+	mov	al,[postbyte_register]
+	or	al,bl
+	or	al,bh
+	jz	mov_mem_ax
+	inc	[base_code]
+	jmp	instruction_ready
+      mov_mem_reg_8bit:
+	or	al,bl
+	or	al,bh
+	jnz	instruction_ready
+      mov_mem_al:
+	test	ch,22h
+	jnz	mov_mem_address16_al
+	test	ch,44h
+	jnz	mov_mem_address32_al
+	test	ch,88h
+	jnz	mov_mem_address64_al
+	or	ch,ch
+	jnz	invalid_address_size
+	cmp	[code_type],64
+	je	mov_mem_address64_al
+	cmp	[code_type],32
+	je	mov_mem_address32_al
+	cmp	edx,10000h
+	jb	mov_mem_address16_al
+      mov_mem_address32_al:
+	call	store_segment_prefix_if_necessary
+	call	address_32bit_prefix
+	mov	[base_code],0A2h
+      store_mov_address32:
+	call	store_instruction_code
+	call	store_address_32bit_value
+	jmp	instruction_assembled
+      mov_mem_address16_al:
+	call	store_segment_prefix_if_necessary
+	call	address_16bit_prefix
+	mov	[base_code],0A2h
+      store_mov_address16:
+	cmp	[code_type],64
+	je	invalid_address
+	call	store_instruction_code
+	mov	eax,edx
+	stos	word [edi]
+	cmp	edx,10000h
+	jge	value_out_of_range
+	jmp	instruction_assembled
+      mov_mem_address64_al:
+	call	store_segment_prefix_if_necessary
+	mov	[base_code],0A2h
+      store_mov_address64:
+	call	store_instruction_code
+	call	store_address_64bit_value
+	jmp	instruction_assembled
+      mov_mem_ax:
+	test	ch,22h
+	jnz	mov_mem_address16_ax
+	test	ch,44h
+	jnz	mov_mem_address32_ax
+	test	ch,88h
+	jnz	mov_mem_address64_ax
+	or	ch,ch
+	jnz	invalid_address_size
+	cmp	[code_type],64
+	je	mov_mem_address64_ax
+	cmp	[code_type],32
+	je	mov_mem_address32_ax
+	cmp	edx,10000h
+	jb	mov_mem_address16_ax
+      mov_mem_address32_ax:
+	call	store_segment_prefix_if_necessary
+	call	address_32bit_prefix
+	mov	[base_code],0A3h
+	jmp	store_mov_address32
+      mov_mem_address16_ax:
+	call	store_segment_prefix_if_necessary
+	call	address_16bit_prefix
+	mov	[base_code],0A3h
+	jmp	store_mov_address16
+      mov_mem_address64_ax:
+	call	store_segment_prefix_if_necessary
+	mov	[base_code],0A3h
+	jmp	store_mov_address64
+      mov_mem_sreg:
+	sub	al,61h
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	mov	ah,[operand_size]
+	or	ah,ah
+	jz	mov_mem_sreg_store
+	cmp	ah,2
+	jne	invalid_operand_size
+      mov_mem_sreg_store:
+	mov	[base_code],8Ch
+	jmp	instruction_ready
+      mov_mem_imm:
+	mov	al,[operand_size]
+	cmp	al,1
+	jb	mov_mem_imm_nosize
+	je	mov_mem_imm_8bit
+	cmp	al,2
+	je	mov_mem_imm_16bit
+	cmp	al,4
+	je	mov_mem_imm_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      mov_mem_imm_64bit:
+	cmp	[size_declared],0
+	jne	long_immediate_not_encodable
+	call	operand_64bit
+	call	get_simm32
+	cmp	[value_type],4
+	jae	long_immediate_not_encodable
+	jmp	mov_mem_imm_32bit_store
+      mov_mem_imm_8bit:
+	call	get_byte_value
+	mov	byte [value],al
+	mov	[postbyte_register],0
+	mov	[base_code],0C6h
+	pop	ecx ebx edx
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      mov_mem_imm_16bit:
+	call	operand_16bit
+	call	get_word_value
+	mov	word [value],ax
+	mov	[postbyte_register],0
+	mov	[base_code],0C7h
+	pop	ecx ebx edx
+	call	store_instruction_with_imm16
+	jmp	instruction_assembled
+      mov_mem_imm_nosize:
+	call	recoverable_unknown_size
+      mov_mem_imm_32bit:
+	call	operand_32bit
+	call	get_dword_value
+      mov_mem_imm_32bit_store:
+	mov	dword [value],eax
+	mov	[postbyte_register],0
+	mov	[base_code],0C7h
+	pop	ecx ebx edx
+	call	store_instruction_with_imm32
+	jmp	instruction_assembled
+      mov_reg:
+	lods	byte [esi]
+	mov	ah,al
+	sub	ah,10h
+	and	ah,al
+	test	ah,0F0h
+	jnz	mov_sreg
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	je	mov_reg_mem
+	cmp	al,'('
+	je	mov_reg_imm
+	cmp	al,10h
+	jne	invalid_operand
+      mov_reg_reg:
+	lods	byte [esi]
+	mov	ah,al
+	sub	ah,10h
+	and	ah,al
+	test	ah,0F0h
+	jnz	mov_reg_sreg
+	call	convert_register
+	mov	bl,[postbyte_register]
+	mov	[postbyte_register],al
+	mov	al,ah
+	cmp	al,1
+	je	mov_reg_reg_8bit
+	call	operand_autodetect
+	inc	[base_code]
+      mov_reg_reg_8bit:
+	jmp	nomem_instruction_ready
+      mov_reg_sreg:
+	mov	bl,[postbyte_register]
+	mov	ah,al
+	and	al,1111b
+	mov	[postbyte_register],al
+	shr	ah,4
+	cmp	ah,5
+	je	mov_reg_creg
+	cmp	ah,7
+	je	mov_reg_dreg
+	ja	mov_reg_treg
+	dec	[postbyte_register]
+	cmp	[operand_size],8
+	je	mov_reg_sreg64
+	cmp	[operand_size],4
+	je	mov_reg_sreg32
+	cmp	[operand_size],2
+	jne	invalid_operand_size
+	call	operand_16bit
+	jmp	mov_reg_sreg_store
+      mov_reg_sreg64:
+	call	operand_64bit
+	jmp	mov_reg_sreg_store
+      mov_reg_sreg32:
+	call	operand_32bit
+      mov_reg_sreg_store:
+	mov	[base_code],8Ch
+	jmp	nomem_instruction_ready
+      mov_reg_treg:
+	cmp	ah,9
+	jne	invalid_operand
+	mov	[extended_code],24h
+	jmp	mov_reg_xrx
+      mov_reg_dreg:
+	mov	[extended_code],21h
+	jmp	mov_reg_xrx
+      mov_reg_creg:
+	mov	[extended_code],20h
+      mov_reg_xrx:
+	mov	[base_code],0Fh
+	cmp	[code_type],64
+	je	mov_reg_xrx_64bit
+	cmp	[operand_size],4
+	jne	invalid_operand_size
+	cmp	[postbyte_register],8
+	jne	mov_reg_xrx_store
+	cmp	[extended_code],20h
+	jne	mov_reg_xrx_store
+	mov	al,0F0h
+	stos	byte [edi]
+	mov	[postbyte_register],0
+      mov_reg_xrx_store:
+	jmp	nomem_instruction_ready
+      mov_reg_xrx_64bit:
+	cmp	[operand_size],8
+	jne	invalid_operand_size
+	jmp	nomem_instruction_ready
+      mov_reg_mem:
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,1
+	je	mov_reg_mem_8bit
+	call	operand_autodetect
+	mov	al,[postbyte_register]
+	or	al,bl
+	or	al,bh
+	jz	mov_ax_mem
+	add	[base_code],3
+	jmp	instruction_ready
+      mov_reg_mem_8bit:
+	mov	al,[postbyte_register]
+	or	al,bl
+	or	al,bh
+	jz	mov_al_mem
+	add	[base_code],2
+	jmp	instruction_ready
+      mov_al_mem:
+	test	ch,22h
+	jnz	mov_al_mem_address16
+	test	ch,44h
+	jnz	mov_al_mem_address32
+	test	ch,88h
+	jnz	mov_al_mem_address64
+	or	ch,ch
+	jnz	invalid_address_size
+	cmp	[code_type],64
+	je	mov_al_mem_address64
+	cmp	[code_type],32
+	je	mov_al_mem_address32
+	cmp	edx,10000h
+	jb	mov_al_mem_address16
+      mov_al_mem_address32:
+	call	store_segment_prefix_if_necessary
+	call	address_32bit_prefix
+	mov	[base_code],0A0h
+	jmp	store_mov_address32
+      mov_al_mem_address16:
+	call	store_segment_prefix_if_necessary
+	call	address_16bit_prefix
+	mov	[base_code],0A0h
+	jmp	store_mov_address16
+      mov_al_mem_address64:
+	call	store_segment_prefix_if_necessary
+	mov	[base_code],0A0h
+	jmp	store_mov_address64
+      mov_ax_mem:
+	test	ch,22h
+	jnz	mov_ax_mem_address16
+	test	ch,44h
+	jnz	mov_ax_mem_address32
+	test	ch,88h
+	jnz	mov_ax_mem_address64
+	or	ch,ch
+	jnz	invalid_address_size
+	cmp	[code_type],64
+	je	mov_ax_mem_address64
+	cmp	[code_type],32
+	je	mov_ax_mem_address32
+	cmp	edx,10000h
+	jb	mov_ax_mem_address16
+      mov_ax_mem_address32:
+	call	store_segment_prefix_if_necessary
+	call	address_32bit_prefix
+	mov	[base_code],0A1h
+	jmp	store_mov_address32
+      mov_ax_mem_address16:
+	call	store_segment_prefix_if_necessary
+	call	address_16bit_prefix
+	mov	[base_code],0A1h
+	jmp	store_mov_address16
+      mov_ax_mem_address64:
+	call	store_segment_prefix_if_necessary
+	mov	[base_code],0A1h
+	jmp	store_mov_address64
+      mov_reg_imm:
+	mov	al,[operand_size]
+	cmp	al,1
+	je	mov_reg_imm_8bit
+	cmp	al,2
+	je	mov_reg_imm_16bit
+	cmp	al,4
+	je	mov_reg_imm_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      mov_reg_imm_64bit:
+	call	operand_64bit
+	call	get_qword_value
+	mov	ecx,edx
+	cmp	[size_declared],0
+	jne	mov_reg_imm_64bit_store
+	cmp	[value_type],4
+	jae	mov_reg_imm_64bit_store
+	cdq
+	cmp	ecx,edx
+	je	mov_reg_64bit_imm_32bit
+      mov_reg_imm_64bit_store:
+	push	eax ecx
+	mov	al,0B8h
+	call	store_mov_reg_imm_code
+	pop	edx eax
+	call	mark_relocation
+	stos	dword [edi]
+	mov	eax,edx
+	stos	dword [edi]
+	jmp	instruction_assembled
+      mov_reg_imm_8bit:
+	call	get_byte_value
+	mov	dl,al
+	mov	al,0B0h
+	call	store_mov_reg_imm_code
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      mov_reg_imm_16bit:
+	call	get_word_value
+	mov	dx,ax
+	call	operand_16bit
+	mov	al,0B8h
+	call	store_mov_reg_imm_code
+	mov	ax,dx
+	call	mark_relocation
+	stos	word [edi]
+	jmp	instruction_assembled
+      mov_reg_imm_32bit:
+	call	operand_32bit
+	call	get_dword_value
+	mov	edx,eax
+	mov	al,0B8h
+	call	store_mov_reg_imm_code
+      mov_store_imm_32bit:
+	mov	eax,edx
+	call	mark_relocation
+	stos	dword [edi]
+	jmp	instruction_assembled
+      store_mov_reg_imm_code:
+	mov	ah,[postbyte_register]
+	test	ah,1000b
+	jz	mov_reg_imm_prefix_ok
+	or	[rex_prefix],41h
+      mov_reg_imm_prefix_ok:
+	and	ah,111b
+	add	al,ah
+	mov	[base_code],al
+	call	store_instruction_code
+	ret
+      mov_reg_64bit_imm_32bit:
+	mov	edx,eax
+	mov	bl,[postbyte_register]
+	mov	[postbyte_register],0
+	mov	[base_code],0C7h
+	call	store_nomem_instruction
+	jmp	mov_store_imm_32bit
+      mov_sreg:
+	mov	ah,al
+	and	al,1111b
+	mov	[postbyte_register],al
+	shr	ah,4
+	cmp	ah,5
+	je	mov_creg
+	cmp	ah,7
+	je	mov_dreg
+	ja	mov_treg
+	cmp	al,2
+	je	illegal_instruction
+	dec	[postbyte_register]
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	je	mov_sreg_mem
+	cmp	al,10h
+	jne	invalid_operand
+      mov_sreg_reg:
+	lods	byte [esi]
+	call	convert_register
+	or	ah,ah
+	jz	mov_sreg_reg_size_ok
+	cmp	ah,2
+	jne	invalid_operand_size
+	mov	bl,al
+      mov_sreg_reg_size_ok:
+	mov	[base_code],8Eh
+	jmp	nomem_instruction_ready
+      mov_sreg_mem:
+	call	get_address
+	mov	al,[operand_size]
+	or	al,al
+	jz	mov_sreg_mem_size_ok
+	cmp	al,2
+	jne	invalid_operand_size
+      mov_sreg_mem_size_ok:
+	mov	[base_code],8Eh
+	jmp	instruction_ready
+      mov_treg:
+	cmp	ah,9
+	jne	invalid_operand
+	mov	[extended_code],26h
+	jmp	mov_xrx
+      mov_dreg:
+	mov	[extended_code],23h
+	jmp	mov_xrx
+      mov_creg:
+	mov	[extended_code],22h
+      mov_xrx:
+	mov	[base_code],0Fh
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	cmp	[code_type],64
+	je	mov_xrx_64bit
+	cmp	ah,4
+	jne	invalid_operand_size
+	cmp	[postbyte_register],8
+	jne	mov_xrx_store
+	cmp	[extended_code],22h
+	jne	mov_xrx_store
+	mov	al,0F0h
+	stos	byte [edi]
+	mov	[postbyte_register],0
+      mov_xrx_store:
+	jmp	nomem_instruction_ready
+      mov_xrx_64bit:
+	cmp	ah,8
+	je	mov_xrx_store
+	jmp	invalid_operand_size
+test_instruction:
+	mov	[base_code],84h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	test_reg
+	cmp	al,'['
+	jne	invalid_operand
+      test_mem:
+	call	get_address
+	push	edx ebx ecx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	je	test_mem_imm
+	cmp	al,10h
+	jne	invalid_operand
+      test_mem_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	mov	al,ah
+	cmp	al,1
+	je	test_mem_reg_8bit
+	call	operand_autodetect
+	inc	[base_code]
+      test_mem_reg_8bit:
+	jmp	instruction_ready
+      test_mem_imm:
+	mov	al,[operand_size]
+	cmp	al,1
+	jb	test_mem_imm_nosize
+	je	test_mem_imm_8bit
+	cmp	al,2
+	je	test_mem_imm_16bit
+	cmp	al,4
+	je	test_mem_imm_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      test_mem_imm_64bit:
+	cmp	[size_declared],0
+	jne	long_immediate_not_encodable
+	call	operand_64bit
+	call	get_simm32
+	cmp	[value_type],4
+	jae	long_immediate_not_encodable
+	jmp	test_mem_imm_32bit_store
+      test_mem_imm_8bit:
+	call	get_byte_value
+	mov	byte [value],al
+	mov	[postbyte_register],0
+	mov	[base_code],0F6h
+	pop	ecx ebx edx
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      test_mem_imm_16bit:
+	call	operand_16bit
+	call	get_word_value
+	mov	word [value],ax
+	mov	[postbyte_register],0
+	mov	[base_code],0F7h
+	pop	ecx ebx edx
+	call	store_instruction_with_imm16
+	jmp	instruction_assembled
+      test_mem_imm_nosize:
+	call	recoverable_unknown_size
+      test_mem_imm_32bit:
+	call	operand_32bit
+	call	get_dword_value
+      test_mem_imm_32bit_store:
+	mov	dword [value],eax
+	mov	[postbyte_register],0
+	mov	[base_code],0F7h
+	pop	ecx ebx edx
+	call	store_instruction_with_imm32
+	jmp	instruction_assembled
+      test_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	je	test_reg_mem
+	cmp	al,'('
+	je	test_reg_imm
+	cmp	al,10h
+	jne	invalid_operand
+      test_reg_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,[postbyte_register]
+	mov	[postbyte_register],al
+	mov	al,ah
+	cmp	al,1
+	je	test_reg_reg_8bit
+	call	operand_autodetect
+	inc	[base_code]
+      test_reg_reg_8bit:
+	jmp	nomem_instruction_ready
+      test_reg_imm:
+	mov	al,[operand_size]
+	cmp	al,1
+	je	test_reg_imm_8bit
+	cmp	al,2
+	je	test_reg_imm_16bit
+	cmp	al,4
+	je	test_reg_imm_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      test_reg_imm_64bit:
+	cmp	[size_declared],0
+	jne	long_immediate_not_encodable
+	call	operand_64bit
+	call	get_simm32
+	cmp	[value_type],4
+	jae	long_immediate_not_encodable
+	jmp	test_reg_imm_32bit_store
+      test_reg_imm_8bit:
+	call	get_byte_value
+	mov	dl,al
+	mov	bl,[postbyte_register]
+	mov	[postbyte_register],0
+	mov	[base_code],0F6h
+	or	bl,bl
+	jz	test_al_imm
+	call	store_nomem_instruction
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      test_al_imm:
+	mov	[base_code],0A8h
+	call	store_instruction_code
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      test_reg_imm_16bit:
+	call	operand_16bit
+	call	get_word_value
+	mov	dx,ax
+	mov	bl,[postbyte_register]
+	mov	[postbyte_register],0
+	mov	[base_code],0F7h
+	or	bl,bl
+	jz	test_ax_imm
+	call	store_nomem_instruction
+	mov	ax,dx
+	call	mark_relocation
+	stos	word [edi]
+	jmp	instruction_assembled
+      test_ax_imm:
+	mov	[base_code],0A9h
+	call	store_instruction_code
+	mov	ax,dx
+	stos	word [edi]
+	jmp	instruction_assembled
+      test_reg_imm_32bit:
+	call	operand_32bit
+	call	get_dword_value
+      test_reg_imm_32bit_store:
+	mov	edx,eax
+	mov	bl,[postbyte_register]
+	mov	[postbyte_register],0
+	mov	[base_code],0F7h
+	or	bl,bl
+	jz	test_eax_imm
+	call	store_nomem_instruction
+	mov	eax,edx
+	call	mark_relocation
+	stos	dword [edi]
+	jmp	instruction_assembled
+      test_eax_imm:
+	mov	[base_code],0A9h
+	call	store_instruction_code
+	mov	eax,edx
+	stos	dword [edi]
+	jmp	instruction_assembled
+      test_reg_mem:
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,1
+	je	test_reg_mem_8bit
+	call	operand_autodetect
+	inc	[base_code]
+      test_reg_mem_8bit:
+	jmp	instruction_ready
+xchg_instruction:
+	mov	[base_code],86h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	xchg_reg
+	cmp	al,'['
+	jne	invalid_operand
+      xchg_mem:
+	call	get_address
+	push	edx ebx ecx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	test_mem_reg
+	jmp	invalid_operand
+      xchg_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	je	test_reg_mem
+	cmp	al,10h
+	jne	invalid_operand
+      xchg_reg_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,ah
+	cmp	al,1
+	je	xchg_reg_reg_8bit
+	call	operand_autodetect
+	cmp	[postbyte_register],0
+	je	xchg_ax_reg
+	or	bl,bl
+	jnz	xchg_reg_reg_store
+	mov	bl,[postbyte_register]
+      xchg_ax_reg:
+	cmp	[code_type],64
+	jne	xchg_ax_reg_ok
+	cmp	ah,4
+	jne	xchg_ax_reg_ok
+	or	bl,bl
+	jz	xchg_reg_reg_store
+      xchg_ax_reg_ok:
+	test	bl,1000b
+	jz	xchg_ax_reg_store
+	or	[rex_prefix],41h
+	and	bl,111b
+      xchg_ax_reg_store:
+	add	bl,90h
+	mov	[base_code],bl
+	call	store_instruction_code
+	jmp	instruction_assembled
+      xchg_reg_reg_store:
+	inc	[base_code]
+      xchg_reg_reg_8bit:
+	jmp	nomem_instruction_ready
+push_instruction:
+	mov	[push_size],al
+      push_next:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	push_reg
+	cmp	al,'('
+	je	push_imm
+	cmp	al,'['
+	jne	invalid_operand
+      push_mem:
+	call	get_address
+	mov	al,[operand_size]
+	mov	ah,[push_size]
+	cmp	al,2
+	je	push_mem_16bit
+	cmp	al,4
+	je	push_mem_32bit
+	cmp	al,8
+	je	push_mem_64bit
+	or	al,al
+	jnz	invalid_operand_size
+	cmp	ah,2
+	je	push_mem_16bit
+	cmp	ah,4
+	je	push_mem_32bit
+	cmp	ah,8
+	je	push_mem_64bit
+	call	recoverable_unknown_size
+	jmp	push_mem_store
+      push_mem_16bit:
+	test	ah,not 2
+	jnz	invalid_operand_size
+	call	operand_16bit
+	jmp	push_mem_store
+      push_mem_32bit:
+	test	ah,not 4
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	operand_32bit
+	jmp	push_mem_store
+      push_mem_64bit:
+	test	ah,not 8
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	jne	illegal_instruction
+      push_mem_store:
+	mov	[base_code],0FFh
+	mov	[postbyte_register],110b
+	call	store_instruction
+	jmp	push_done
+      push_reg:
+	lods	byte [esi]
+	mov	ah,al
+	sub	ah,10h
+	and	ah,al
+	test	ah,0F0h
+	jnz	push_sreg
+	call	convert_register
+	test	al,1000b
+	jz	push_reg_ok
+	or	[rex_prefix],41h
+	and	al,111b
+      push_reg_ok:
+	add	al,50h
+	mov	[base_code],al
+	mov	al,ah
+	mov	ah,[push_size]
+	cmp	al,2
+	je	push_reg_16bit
+	cmp	al,4
+	je	push_reg_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      push_reg_64bit:
+	test	ah,not 8
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	jne	illegal_instruction
+	jmp	push_reg_store
+      push_reg_32bit:
+	test	ah,not 4
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	operand_32bit
+	jmp	push_reg_store
+      push_reg_16bit:
+	test	ah,not 2
+	jnz	invalid_operand_size
+	call	operand_16bit
+      push_reg_store:
+	call	store_instruction_code
+	jmp	push_done
+      push_sreg:
+	mov	bl,al
+	mov	dl,[operand_size]
+	mov	dh,[push_size]
+	cmp	dl,2
+	je	push_sreg16
+	cmp	dl,4
+	je	push_sreg32
+	cmp	dl,8
+	je	push_sreg64
+	or	dl,dl
+	jnz	invalid_operand_size
+	cmp	dh,2
+	je	push_sreg16
+	cmp	dh,4
+	je	push_sreg32
+	cmp	dh,8
+	je	push_sreg64
+	jmp	push_sreg_store
+      push_sreg16:
+	test	dh,not 2
+	jnz	invalid_operand_size
+	call	operand_16bit
+	jmp	push_sreg_store
+      push_sreg32:
+	test	dh,not 4
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	operand_32bit
+	jmp	push_sreg_store
+      push_sreg64:
+	test	dh,not 8
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	jne	illegal_instruction
+      push_sreg_store:
+	mov	al,bl
+	cmp	al,70h
+	jae	invalid_operand
+	sub	al,61h
+	jc	invalid_operand
+	cmp	al,4
+	jae	push_sreg_386
+	shl	al,3
+	add	al,6
+	mov	[base_code],al
+	cmp	[code_type],64
+	je	illegal_instruction
+	jmp	push_reg_store
+      push_sreg_386:
+	sub	al,4
+	shl	al,3
+	add	al,0A0h
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	jmp	push_reg_store
+      push_imm:
+	mov	al,[operand_size]
+	mov	ah,[push_size]
+	or	al,al
+	je	push_imm_size_ok
+	or	ah,ah
+	je	push_imm_size_ok
+	cmp	al,ah
+	jne	invalid_operand_size
+      push_imm_size_ok:
+	cmp	al,2
+	je	push_imm_16bit
+	cmp	al,4
+	je	push_imm_32bit
+	cmp	al,8
+	je	push_imm_64bit
+	cmp	ah,2
+	je	push_imm_optimized_16bit
+	cmp	ah,4
+	je	push_imm_optimized_32bit
+	cmp	ah,8
+	je	push_imm_optimized_64bit
+	or	al,al
+	jnz	invalid_operand_size
+	cmp	[code_type],16
+	je	push_imm_optimized_16bit
+	cmp	[code_type],32
+	je	push_imm_optimized_32bit
+      push_imm_optimized_64bit:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	call	get_simm32
+	mov	edx,eax
+	cmp	[value_type],0
+	jne	push_imm_32bit_store
+	cmp	eax,-80h
+	jl	push_imm_32bit_store
+	cmp	eax,80h
+	jge	push_imm_32bit_store
+	jmp	push_imm_8bit
+      push_imm_optimized_32bit:
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	get_dword_value
+	mov	edx,eax
+	call	operand_32bit
+	cmp	[value_type],0
+	jne	push_imm_32bit_store
+	cmp	eax,-80h
+	jl	push_imm_32bit_store
+	cmp	eax,80h
+	jge	push_imm_32bit_store
+	jmp	push_imm_8bit
+      push_imm_optimized_16bit:
+	call	get_word_value
+	mov	dx,ax
+	call	operand_16bit
+	cmp	[value_type],0
+	jne	push_imm_16bit_store
+	cmp	ax,-80h
+	jl	push_imm_16bit_store
+	cmp	ax,80h
+	jge	push_imm_16bit_store
+      push_imm_8bit:
+	mov	ah,al
+	mov	[base_code],6Ah
+	call	store_instruction_code
+	mov	al,ah
+	stos	byte [edi]
+	jmp	push_done
+      push_imm_16bit:
+	call	get_word_value
+	mov	dx,ax
+	call	operand_16bit
+      push_imm_16bit_store:
+	mov	[base_code],68h
+	call	store_instruction_code
+	mov	ax,dx
+	call	mark_relocation
+	stos	word [edi]
+	jmp	push_done
+      push_imm_64bit:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	call	get_simm32
+	mov	edx,eax
+	jmp	push_imm_32bit_store
+      push_imm_32bit:
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	get_dword_value
+	mov	edx,eax
+	call	operand_32bit
+      push_imm_32bit_store:
+	mov	[base_code],68h
+	call	store_instruction_code
+	mov	eax,edx
+	call	mark_relocation
+	stos	dword [edi]
+      push_done:
+	lods	byte [esi]
+	dec	esi
+	cmp	al,0Fh
+	je	instruction_assembled
+	or	al,al
+	jz	instruction_assembled
+	mov	[operand_size],0
+	mov	[size_override],0
+	mov	[operand_prefix],0
+	mov	[rex_prefix],0
+	jmp	push_next
+pop_instruction:
+	mov	[push_size],al
+      pop_next:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	pop_reg
+	cmp	al,'['
+	jne	invalid_operand
+      pop_mem:
+	call	get_address
+	mov	al,[operand_size]
+	mov	ah,[push_size]
+	cmp	al,2
+	je	pop_mem_16bit
+	cmp	al,4
+	je	pop_mem_32bit
+	cmp	al,8
+	je	pop_mem_64bit
+	or	al,al
+	jnz	invalid_operand_size
+	cmp	ah,2
+	je	pop_mem_16bit
+	cmp	ah,4
+	je	pop_mem_32bit
+	cmp	ah,8
+	je	pop_mem_64bit
+	call	recoverable_unknown_size
+	jmp	pop_mem_store
+      pop_mem_16bit:
+	test	ah,not 2
+	jnz	invalid_operand_size
+	call	operand_16bit
+	jmp	pop_mem_store
+      pop_mem_32bit:
+	test	ah,not 4
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	operand_32bit
+	jmp	pop_mem_store
+      pop_mem_64bit:
+	test	ah,not 8
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	jne	illegal_instruction
+      pop_mem_store:
+	mov	[base_code],08Fh
+	mov	[postbyte_register],0
+	call	store_instruction
+	jmp	pop_done
+      pop_reg:
+	lods	byte [esi]
+	mov	ah,al
+	sub	ah,10h
+	and	ah,al
+	test	ah,0F0h
+	jnz	pop_sreg
+	call	convert_register
+	test	al,1000b
+	jz	pop_reg_ok
+	or	[rex_prefix],41h
+	and	al,111b
+      pop_reg_ok:
+	add	al,58h
+	mov	[base_code],al
+	mov	al,ah
+	mov	ah,[push_size]
+	cmp	al,2
+	je	pop_reg_16bit
+	cmp	al,4
+	je	pop_reg_32bit
+	cmp	al,8
+	je	pop_reg_64bit
+	jmp	invalid_operand_size
+      pop_reg_64bit:
+	test	ah,not 8
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	jne	illegal_instruction
+	jmp	pop_reg_store
+      pop_reg_32bit:
+	test	ah,not 4
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	operand_32bit
+	jmp	pop_reg_store
+      pop_reg_16bit:
+	test	ah,not 2
+	jnz	invalid_operand_size
+	call	operand_16bit
+      pop_reg_store:
+	call	store_instruction_code
+      pop_done:
+	lods	byte [esi]
+	dec	esi
+	cmp	al,0Fh
+	je	instruction_assembled
+	or	al,al
+	jz	instruction_assembled
+	mov	[operand_size],0
+	mov	[size_override],0
+	mov	[operand_prefix],0
+	mov	[rex_prefix],0
+	jmp	pop_next
+      pop_sreg:
+	mov	dl,[operand_size]
+	mov	dh,[push_size]
+	cmp	al,62h
+	je	pop_cs
+	mov	bl,al
+	cmp	dl,2
+	je	pop_sreg16
+	cmp	dl,4
+	je	pop_sreg32
+	cmp	dl,8
+	je	pop_sreg64
+	or	dl,dl
+	jnz	invalid_operand_size
+	cmp	dh,2
+	je	pop_sreg16
+	cmp	dh,4
+	je	pop_sreg32
+	cmp	dh,8
+	je	pop_sreg64
+	jmp	pop_sreg_store
+      pop_sreg16:
+	test	dh,not 2
+	jnz	invalid_operand_size
+	call	operand_16bit
+	jmp	pop_sreg_store
+      pop_sreg32:
+	test	dh,not 4
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	operand_32bit
+	jmp	pop_sreg_store
+      pop_sreg64:
+	test	dh,not 8
+	jnz	invalid_operand_size
+	cmp	[code_type],64
+	jne	illegal_instruction
+      pop_sreg_store:
+	mov	al,bl
+	cmp	al,70h
+	jae	invalid_operand
+	sub	al,61h
+	jc	invalid_operand
+	cmp	al,4
+	jae	pop_sreg_386
+	shl	al,3
+	add	al,7
+	mov	[base_code],al
+	cmp	[code_type],64
+	je	illegal_instruction
+	jmp	pop_reg_store
+      pop_cs:
+	cmp	[code_type],16
+	jne	illegal_instruction
+	cmp	dl,2
+	je	pop_cs_store
+	or	dl,dl
+	jnz	invalid_operand_size
+	cmp	dh,2
+	je	pop_cs_store
+	or	dh,dh
+	jnz	illegal_instruction
+      pop_cs_store:
+	test	dh,not 2
+	jnz	invalid_operand_size
+	mov	al,0Fh
+	stos	byte [edi]
+	jmp	pop_done
+      pop_sreg_386:
+	sub	al,4
+	shl	al,3
+	add	al,0A1h
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	jmp	pop_reg_store
+inc_instruction:
+	mov	[base_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	inc_reg
+	cmp	al,'['
+	je	inc_mem
+	jne	invalid_operand
+      inc_mem:
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,1
+	je	inc_mem_8bit
+	jb	inc_mem_nosize
+	call	operand_autodetect
+	mov	al,0FFh
+	xchg	al,[base_code]
+	mov	[postbyte_register],al
+	jmp	instruction_ready
+      inc_mem_nosize:
+	call	recoverable_unknown_size
+      inc_mem_8bit:
+	mov	al,0FEh
+	xchg	al,[base_code]
+	mov	[postbyte_register],al
+	jmp	instruction_ready
+      inc_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,0FEh
+	xchg	al,[base_code]
+	mov	[postbyte_register],al
+	mov	al,ah
+	cmp	al,1
+	je	inc_reg_8bit
+	call	operand_autodetect
+	cmp	[code_type],64
+	je	inc_reg_long_form
+	mov	al,[postbyte_register]
+	shl	al,3
+	add	al,bl
+	add	al,40h
+	mov	[base_code],al
+	call	store_instruction_code
+	jmp	instruction_assembled
+      inc_reg_long_form:
+	inc	[base_code]
+      inc_reg_8bit:
+	jmp	nomem_instruction_ready
+set_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	set_reg
+	cmp	al,'['
+	jne	invalid_operand
+      set_mem:
+	call	get_address
+	cmp	[operand_size],1
+	ja	invalid_operand_size
+	mov	[postbyte_register],0
+	jmp	instruction_ready
+      set_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	ah,1
+	jne	invalid_operand_size
+	mov	bl,al
+	mov	[postbyte_register],0
+	jmp	nomem_instruction_ready
+arpl_instruction:
+	cmp	[code_type],64
+	je	illegal_instruction
+	mov	[base_code],63h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	arpl_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	cmp	ah,2
+	jne	invalid_operand_size
+	jmp	instruction_ready
+      arpl_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	ah,2
+	jne	invalid_operand_size
+	mov	bl,al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	jmp	nomem_instruction_ready
+bound_instruction:
+	cmp	[code_type],64
+	je	illegal_instruction
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,2
+	je	bound_store
+	cmp	al,4
+	jne	invalid_operand_size
+      bound_store:
+	call	operand_autodetect
+	mov	[base_code],62h
+	jmp	instruction_ready
+enter_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	ah,2
+	je	enter_imm16_size_ok
+	or	ah,ah
+	jnz	invalid_operand_size
+      enter_imm16_size_ok:
+	cmp	al,'('
+	jne	invalid_operand
+	call	get_word_value
+	cmp	[next_pass_needed],0
+	jne	enter_imm16_ok
+	cmp	[value_type],0
+	jne	invalid_use_of_symbol
+	test	eax,eax
+	js	value_out_of_range
+      enter_imm16_ok:
+	push	eax
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	ah,1
+	je	enter_imm8_size_ok
+	or	ah,ah
+	jnz	invalid_operand_size
+      enter_imm8_size_ok:
+	cmp	al,'('
+	jne	invalid_operand
+	call	get_byte_value
+	cmp	[next_pass_needed],0
+	jne	enter_imm8_ok
+	test	eax,eax
+	js	value_out_of_range
+      enter_imm8_ok:
+	mov	dl,al
+	pop	ebx
+	mov	al,0C8h
+	stos	byte [edi]
+	mov	ax,bx
+	stos	word [edi]
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+ret_instruction_only64:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	jmp	ret_instruction
+ret_instruction_32bit_except64:
+	cmp	[code_type],64
+	je	illegal_instruction
+ret_instruction_32bit:
+	call	operand_32bit
+	jmp	ret_instruction
+ret_instruction_16bit:
+	call	operand_16bit
+	jmp	ret_instruction
+retf_instruction:
+	cmp	[code_type],64
+	jne	ret_instruction
+ret_instruction_64bit:
+	call	operand_64bit
+ret_instruction:
+	mov	[base_code],al
+	lods	byte [esi]
+	dec	esi
+	or	al,al
+	jz	simple_ret
+	cmp	al,0Fh
+	je	simple_ret
+	lods	byte [esi]
+	call	get_size_operator
+	or	ah,ah
+	jz	ret_imm
+	cmp	ah,2
+	je	ret_imm
+	jmp	invalid_operand_size
+      ret_imm:
+	cmp	al,'('
+	jne	invalid_operand
+	call	get_word_value
+	cmp	[next_pass_needed],0
+	jne	ret_imm_ok
+	cmp	[value_type],0
+	jne	invalid_use_of_symbol
+	test	eax,eax
+	js	value_out_of_range
+      ret_imm_ok:
+	cmp	[size_declared],0
+	jne	ret_imm_store
+	or	ax,ax
+	jz	simple_ret
+      ret_imm_store:
+	mov	dx,ax
+	call	store_instruction_code
+	mov	ax,dx
+	stos	word [edi]
+	jmp	instruction_assembled
+      simple_ret:
+	inc	[base_code]
+	call	store_instruction_code
+	jmp	instruction_assembled
+lea_instruction:
+	mov	[base_code],8Dh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	xor	al,al
+	xchg	al,[operand_size]
+	push	eax
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	mov	[size_override],-1
+	call	get_address
+	pop	eax
+	mov	[operand_size],al
+	call	operand_autodetect
+	jmp	instruction_ready
+ls_instruction:
+	or	al,al
+	jz	les_instruction
+	cmp	al,3
+	jz	lds_instruction
+	add	al,0B0h
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	jmp	ls_code_ok
+      les_instruction:
+	mov	[base_code],0C4h
+	jmp	ls_short_code
+      lds_instruction:
+	mov	[base_code],0C5h
+      ls_short_code:
+	cmp	[code_type],64
+	je	illegal_instruction
+      ls_code_ok:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	add	[operand_size],2
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,4
+	je	ls_16bit
+	cmp	al,6
+	je	ls_32bit
+	cmp	al,10
+	je	ls_64bit
+	jmp	invalid_operand_size
+      ls_16bit:
+	call	operand_16bit
+	jmp	instruction_ready
+      ls_32bit:
+	call	operand_32bit
+	jmp	instruction_ready
+      ls_64bit:
+	call	operand_64bit
+	jmp	instruction_ready
+sh_instruction:
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	sh_reg
+	cmp	al,'['
+	jne	invalid_operand
+      sh_mem:
+	call	get_address
+	push	edx ebx ecx
+	mov	al,[operand_size]
+	push	eax
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	je	sh_mem_imm
+	cmp	al,10h
+	jne	invalid_operand
+      sh_mem_reg:
+	lods	byte [esi]
+	cmp	al,11h
+	jne	invalid_operand
+	pop	eax ecx ebx edx
+	cmp	al,1
+	je	sh_mem_cl_8bit
+	jb	sh_mem_cl_nosize
+	call	operand_autodetect
+	mov	[base_code],0D3h
+	jmp	instruction_ready
+      sh_mem_cl_nosize:
+	call	recoverable_unknown_size
+      sh_mem_cl_8bit:
+	mov	[base_code],0D2h
+	jmp	instruction_ready
+      sh_mem_imm:
+	mov	al,[operand_size]
+	or	al,al
+	jz	sh_mem_imm_size_ok
+	cmp	al,1
+	jne	invalid_operand_size
+      sh_mem_imm_size_ok:
+	call	get_byte_value
+	mov	byte [value],al
+	pop	eax ecx ebx edx
+	cmp	al,1
+	je	sh_mem_imm_8bit
+	jb	sh_mem_imm_nosize
+	call	operand_autodetect
+	cmp	byte [value],1
+	je	sh_mem_1
+	mov	[base_code],0C1h
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      sh_mem_1:
+	mov	[base_code],0D1h
+	jmp	instruction_ready
+      sh_mem_imm_nosize:
+	call	recoverable_unknown_size
+      sh_mem_imm_8bit:
+	cmp	byte [value],1
+	je	sh_mem_1_8bit
+	mov	[base_code],0C0h
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      sh_mem_1_8bit:
+	mov	[base_code],0D0h
+	jmp	instruction_ready
+      sh_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bx,ax
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	je	sh_reg_imm
+	cmp	al,10h
+	jne	invalid_operand
+      sh_reg_reg:
+	lods	byte [esi]
+	cmp	al,11h
+	jne	invalid_operand
+	mov	al,bh
+	cmp	al,1
+	je	sh_reg_cl_8bit
+	call	operand_autodetect
+	mov	[base_code],0D3h
+	jmp	nomem_instruction_ready
+      sh_reg_cl_8bit:
+	mov	[base_code],0D2h
+	jmp	nomem_instruction_ready
+      sh_reg_imm:
+	mov	al,[operand_size]
+	or	al,al
+	jz	sh_reg_imm_size_ok
+	cmp	al,1
+	jne	invalid_operand_size
+      sh_reg_imm_size_ok:
+	push	ebx
+	call	get_byte_value
+	mov	dl,al
+	pop	ebx
+	mov	al,bh
+	cmp	al,1
+	je	sh_reg_imm_8bit
+	call	operand_autodetect
+	cmp	dl,1
+	je	sh_reg_1
+	mov	[base_code],0C1h
+	call	store_nomem_instruction
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      sh_reg_1:
+	mov	[base_code],0D1h
+	jmp	nomem_instruction_ready
+      sh_reg_imm_8bit:
+	cmp	dl,1
+	je	sh_reg_1_8bit
+	mov	[base_code],0C0h
+	call	store_nomem_instruction
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      sh_reg_1_8bit:
+	mov	[base_code],0D0h
+	jmp	nomem_instruction_ready
+shd_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	shd_reg
+	cmp	al,'['
+	jne	invalid_operand
+      shd_mem:
+	call	get_address
+	push	edx ebx ecx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	al,ah
+	mov	[operand_size],0
+	push	eax
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	je	shd_mem_reg_imm
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,11h
+	jne	invalid_operand
+	pop	eax ecx ebx edx
+	call	operand_autodetect
+	inc	[extended_code]
+	jmp	instruction_ready
+      shd_mem_reg_imm:
+	mov	al,[operand_size]
+	or	al,al
+	jz	shd_mem_reg_imm_size_ok
+	cmp	al,1
+	jne	invalid_operand_size
+      shd_mem_reg_imm_size_ok:
+	call	get_byte_value
+	mov	byte [value],al
+	pop	eax ecx ebx edx
+	call	operand_autodetect
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      shd_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,[postbyte_register]
+	mov	[postbyte_register],al
+	mov	al,ah
+	push	eax ebx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	je	shd_reg_reg_imm
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,11h
+	jne	invalid_operand
+	pop	ebx eax
+	call	operand_autodetect
+	inc	[extended_code]
+	jmp	nomem_instruction_ready
+      shd_reg_reg_imm:
+	mov	al,[operand_size]
+	or	al,al
+	jz	shd_reg_reg_imm_size_ok
+	cmp	al,1
+	jne	invalid_operand_size
+      shd_reg_reg_imm_size_ok:
+	call	get_byte_value
+	mov	dl,al
+	pop	ebx eax
+	call	operand_autodetect
+	call	store_nomem_instruction
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+movx_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	mov	al,ah
+	push	eax
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	movx_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	pop	eax
+	mov	ah,[operand_size]
+	or	ah,ah
+	jz	movx_unknown_size
+	cmp	ah,al
+	jae	invalid_operand_size
+	cmp	ah,1
+	je	movx_mem_store
+	cmp	ah,2
+	jne	invalid_operand_size
+	inc	[extended_code]
+      movx_mem_store:
+	call	operand_autodetect
+	jmp	instruction_ready
+      movx_unknown_size:
+	call	recoverable_unknown_size
+	jmp	movx_mem_store
+      movx_reg:
+	lods	byte [esi]
+	call	convert_register
+	pop	ebx
+	xchg	bl,al
+	cmp	ah,al
+	jae	invalid_operand_size
+	cmp	ah,1
+	je	movx_reg_8bit
+	cmp	ah,2
+	je	movx_reg_16bit
+	jmp	invalid_operand_size
+      movx_reg_8bit:
+	call	operand_autodetect
+	jmp	nomem_instruction_ready
+      movx_reg_16bit:
+	call	operand_autodetect
+	inc	[extended_code]
+	jmp	nomem_instruction_ready
+movsxd_instruction:
+	mov	[base_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	cmp	ah,8
+	jne	invalid_operand_size
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	movsxd_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],4
+	je	movsxd_mem_store
+	cmp	[operand_size],0
+	jne	invalid_operand_size
+      movsxd_mem_store:
+	call	operand_64bit
+	jmp	instruction_ready
+      movsxd_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	ah,4
+	jne	invalid_operand_size
+	mov	bl,al
+	call	operand_64bit
+	jmp	nomem_instruction_ready
+bt_instruction:
+	mov	[postbyte_register],al
+	shl	al,3
+	add	al,83h
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	bt_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	push	eax ebx ecx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	cmp	byte [esi],'('
+	je	bt_mem_imm
+	cmp	byte [esi],11h
+	jne	bt_mem_reg
+	cmp	byte [esi+2],'('
+	je	bt_mem_imm
+      bt_mem_reg:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	mov	al,ah
+	call	operand_autodetect
+	jmp	instruction_ready
+      bt_mem_imm:
+	xor	al,al
+	xchg	al,[operand_size]
+	push	eax
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	jne	invalid_operand
+	mov	al,[operand_size]
+	or	al,al
+	jz	bt_mem_imm_size_ok
+	cmp	al,1
+	jne	invalid_operand_size
+      bt_mem_imm_size_ok:
+	call	get_byte_value
+	mov	byte [value],al
+	pop	eax
+	or	al,al
+	jz	bt_mem_imm_nosize
+	call	operand_autodetect
+      bt_mem_imm_store:
+	pop	ecx ebx edx
+	mov	[extended_code],0BAh
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      bt_mem_imm_nosize:
+	call	recoverable_unknown_size
+	jmp	bt_mem_imm_store
+      bt_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	cmp	byte [esi],'('
+	je	bt_reg_imm
+	cmp	byte [esi],11h
+	jne	bt_reg_reg
+	cmp	byte [esi+2],'('
+	je	bt_reg_imm
+      bt_reg_reg:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	mov	al,ah
+	call	operand_autodetect
+	jmp	nomem_instruction_ready
+      bt_reg_imm:
+	xor	al,al
+	xchg	al,[operand_size]
+	push	eax ebx
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	jne	invalid_operand
+	mov	al,[operand_size]
+	or	al,al
+	jz	bt_reg_imm_size_ok
+	cmp	al,1
+	jne	invalid_operand_size
+      bt_reg_imm_size_ok:
+	call	get_byte_value
+	mov	byte [value],al
+	pop	ebx eax
+	call	operand_autodetect
+      bt_reg_imm_store:
+	mov	[extended_code],0BAh
+	call	store_nomem_instruction
+	mov	al,byte [value]
+	stos	byte [edi]
+	jmp	instruction_assembled
+bs_instruction:
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	call	get_reg_mem
+	jc	bs_reg_reg
+	mov	al,[operand_size]
+	call	operand_autodetect
+	jmp	instruction_ready
+      bs_reg_reg:
+	mov	al,ah
+	call	operand_autodetect
+	jmp	nomem_instruction_ready
+      get_reg_mem:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	get_reg_reg
+	cmp	al,'['
+	jne	invalid_argument
+	call	get_address
+	clc
+	ret
+      get_reg_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	stc
+	ret
+
+imul_instruction:
+	mov	[base_code],0F6h
+	mov	[postbyte_register],5
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	imul_reg
+	cmp	al,'['
+	jne	invalid_operand
+      imul_mem:
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,1
+	je	imul_mem_8bit
+	jb	imul_mem_nosize
+	call	operand_autodetect
+	inc	[base_code]
+	jmp	instruction_ready
+      imul_mem_nosize:
+	call	recoverable_unknown_size
+      imul_mem_8bit:
+	jmp	instruction_ready
+      imul_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	byte [esi],','
+	je	imul_reg_
+	mov	bl,al
+	mov	al,ah
+	cmp	al,1
+	je	imul_reg_8bit
+	call	operand_autodetect
+	inc	[base_code]
+      imul_reg_8bit:
+	jmp	nomem_instruction_ready
+      imul_reg_:
+	mov	[postbyte_register],al
+	inc	esi
+	cmp	byte [esi],'('
+	je	imul_reg_imm
+	cmp	byte [esi],11h
+	jne	imul_reg_noimm
+	cmp	byte [esi+2],'('
+	je	imul_reg_imm
+      imul_reg_noimm:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	imul_reg_reg
+	cmp	al,'['
+	jne	invalid_operand
+      imul_reg_mem:
+	call	get_address
+	push	edx ebx ecx
+	cmp	byte [esi],','
+	je	imul_reg_mem_imm
+	mov	al,[operand_size]
+	call	operand_autodetect
+	pop	ecx ebx edx
+	mov	[base_code],0Fh
+	mov	[extended_code],0AFh
+	jmp	instruction_ready
+      imul_reg_mem_imm:
+	inc	esi
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	jne	invalid_operand
+	mov	al,[operand_size]
+	cmp	al,2
+	je	imul_reg_mem_imm_16bit
+	cmp	al,4
+	je	imul_reg_mem_imm_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      imul_reg_mem_imm_64bit:
+	cmp	[size_declared],0
+	jne	long_immediate_not_encodable
+	call	operand_64bit
+	call	get_simm32
+	cmp	[value_type],4
+	jae	long_immediate_not_encodable
+	jmp	imul_reg_mem_imm_32bit_ok
+      imul_reg_mem_imm_16bit:
+	call	operand_16bit
+	call	get_word_value
+	mov	word [value],ax
+	cmp	[value_type],0
+	jne	imul_reg_mem_imm_16bit_store
+	cmp	[size_declared],0
+	jne	imul_reg_mem_imm_16bit_store
+	cmp	ax,-80h
+	jl	imul_reg_mem_imm_16bit_store
+	cmp	ax,80h
+	jl	imul_reg_mem_imm_8bit_store
+      imul_reg_mem_imm_16bit_store:
+	pop	ecx ebx edx
+	mov	[base_code],69h
+	call	store_instruction_with_imm16
+	jmp	instruction_assembled
+      imul_reg_mem_imm_32bit:
+	call	operand_32bit
+	call	get_dword_value
+      imul_reg_mem_imm_32bit_ok:
+	mov	dword [value],eax
+	cmp	[value_type],0
+	jne	imul_reg_mem_imm_32bit_store
+	cmp	[size_declared],0
+	jne	imul_reg_mem_imm_32bit_store
+	cmp	eax,-80h
+	jl	imul_reg_mem_imm_32bit_store
+	cmp	eax,80h
+	jl	imul_reg_mem_imm_8bit_store
+      imul_reg_mem_imm_32bit_store:
+	pop	ecx ebx edx
+	mov	[base_code],69h
+	call	store_instruction_with_imm32
+	jmp	instruction_assembled
+      imul_reg_mem_imm_8bit_store:
+	pop	ecx ebx edx
+	mov	[base_code],6Bh
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      imul_reg_imm:
+	mov	bl,[postbyte_register]
+	dec	esi
+	jmp	imul_reg_reg_imm
+      imul_reg_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	cmp	byte [esi],','
+	je	imul_reg_reg_imm
+	mov	al,ah
+	call	operand_autodetect
+	mov	[base_code],0Fh
+	mov	[extended_code],0AFh
+	jmp	nomem_instruction_ready
+      imul_reg_reg_imm:
+	inc	esi
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	jne	invalid_operand
+	mov	al,[operand_size]
+	cmp	al,2
+	je	imul_reg_reg_imm_16bit
+	cmp	al,4
+	je	imul_reg_reg_imm_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      imul_reg_reg_imm_64bit:
+	cmp	[size_declared],0
+	jne	long_immediate_not_encodable
+	call	operand_64bit
+	push	ebx
+	call	get_simm32
+	cmp	[value_type],4
+	jae	long_immediate_not_encodable
+	jmp	imul_reg_reg_imm_32bit_ok
+      imul_reg_reg_imm_16bit:
+	call	operand_16bit
+	push	ebx
+	call	get_word_value
+	pop	ebx
+	mov	dx,ax
+	cmp	[value_type],0
+	jne	imul_reg_reg_imm_16bit_store
+	cmp	[size_declared],0
+	jne	imul_reg_reg_imm_16bit_store
+	cmp	ax,-80h
+	jl	imul_reg_reg_imm_16bit_store
+	cmp	ax,80h
+	jl	imul_reg_reg_imm_8bit_store
+      imul_reg_reg_imm_16bit_store:
+	mov	[base_code],69h
+	call	store_nomem_instruction
+	mov	ax,dx
+	call	mark_relocation
+	stos	word [edi]
+	jmp	instruction_assembled
+      imul_reg_reg_imm_32bit:
+	call	operand_32bit
+	push	ebx
+	call	get_dword_value
+      imul_reg_reg_imm_32bit_ok:
+	pop	ebx
+	mov	edx,eax
+	cmp	[value_type],0
+	jne	imul_reg_reg_imm_32bit_store
+	cmp	[size_declared],0
+	jne	imul_reg_reg_imm_32bit_store
+	cmp	eax,-80h
+	jl	imul_reg_reg_imm_32bit_store
+	cmp	eax,80h
+	jl	imul_reg_reg_imm_8bit_store
+      imul_reg_reg_imm_32bit_store:
+	mov	[base_code],69h
+	call	store_nomem_instruction
+	mov	eax,edx
+	call	mark_relocation
+	stos	dword [edi]
+	jmp	instruction_assembled
+      imul_reg_reg_imm_8bit_store:
+	mov	[base_code],6Bh
+	call	store_nomem_instruction
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+in_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	or	al,al
+	jnz	invalid_operand
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	al,ah
+	push	eax
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	je	in_imm
+	cmp	al,10h
+	je	in_reg
+	jmp	invalid_operand
+      in_reg:
+	lods	byte [esi]
+	cmp	al,22h
+	jne	invalid_operand
+	pop	eax
+	cmp	al,1
+	je	in_al_dx
+	cmp	al,2
+	je	in_ax_dx
+	cmp	al,4
+	jne	invalid_operand_size
+      in_ax_dx:
+	call	operand_autodetect
+	mov	[base_code],0EDh
+	call	store_instruction_code
+	jmp	instruction_assembled
+      in_al_dx:
+	mov	al,0ECh
+	stos	byte [edi]
+	jmp	instruction_assembled
+      in_imm:
+	mov	al,[operand_size]
+	or	al,al
+	jz	in_imm_size_ok
+	cmp	al,1
+	jne	invalid_operand_size
+      in_imm_size_ok:
+	call	get_byte_value
+	mov	dl,al
+	pop	eax
+	cmp	al,1
+	je	in_al_imm
+	cmp	al,2
+	je	in_ax_imm
+	cmp	al,4
+	jne	invalid_operand_size
+      in_ax_imm:
+	call	operand_autodetect
+	mov	[base_code],0E5h
+	call	store_instruction_code
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      in_al_imm:
+	mov	al,0E4h
+	stos	byte [edi]
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+out_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'('
+	je	out_imm
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,22h
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	or	al,al
+	jnz	invalid_operand
+	mov	al,ah
+	cmp	al,1
+	je	out_dx_al
+	cmp	al,2
+	je	out_dx_ax
+	cmp	al,4
+	jne	invalid_operand_size
+      out_dx_ax:
+	call	operand_autodetect
+	mov	[base_code],0EFh
+	call	store_instruction_code
+	jmp	instruction_assembled
+      out_dx_al:
+	mov	al,0EEh
+	stos	byte [edi]
+	jmp	instruction_assembled
+      out_imm:
+	mov	al,[operand_size]
+	or	al,al
+	jz	out_imm_size_ok
+	cmp	al,1
+	jne	invalid_operand_size
+      out_imm_size_ok:
+	call	get_byte_value
+	mov	dl,al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	or	al,al
+	jnz	invalid_operand
+	mov	al,ah
+	cmp	al,1
+	je	out_imm_al
+	cmp	al,2
+	je	out_imm_ax
+	cmp	al,4
+	jne	invalid_operand_size
+      out_imm_ax:
+	call	operand_autodetect
+	mov	[base_code],0E7h
+	call	store_instruction_code
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+      out_imm_al:
+	mov	al,0E6h
+	stos	byte [edi]
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+
+call_instruction:
+	mov	[postbyte_register],10b
+	mov	[base_code],0E8h
+	mov	[extended_code],9Ah
+	jmp	process_jmp
+jmp_instruction:
+	mov	[postbyte_register],100b
+	mov	[base_code],0E9h
+	mov	[extended_code],0EAh
+      process_jmp:
+	lods	byte [esi]
+	call	get_jump_operator
+	call	get_size_operator
+	cmp	al,'('
+	je	jmp_imm
+	mov	[base_code],0FFh
+	cmp	al,10h
+	je	jmp_reg
+	cmp	al,'['
+	jne	invalid_operand
+      jmp_mem:
+	cmp	[jump_type],1
+	je	illegal_instruction
+	call	get_address
+	mov	edx,eax
+	mov	al,[operand_size]
+	or	al,al
+	jz	jmp_mem_size_not_specified
+	cmp	al,2
+	je	jmp_mem_16bit
+	cmp	al,4
+	je	jmp_mem_32bit
+	cmp	al,6
+	je	jmp_mem_48bit
+	cmp	al,8
+	je	jmp_mem_64bit
+	cmp	al,10
+	je	jmp_mem_80bit
+	jmp	invalid_operand_size
+      jmp_mem_size_not_specified:
+	cmp	[jump_type],3
+	je	jmp_mem_far
+	cmp	[jump_type],2
+	je	jmp_mem_near
+	call	recoverable_unknown_size
+      jmp_mem_near:
+	cmp	[code_type],16
+	je	jmp_mem_16bit
+	cmp	[code_type],32
+	je	jmp_mem_near_32bit
+      jmp_mem_64bit:
+	cmp	[jump_type],3
+	je	invalid_operand_size
+	cmp	[code_type],64
+	jne	illegal_instruction
+	jmp	instruction_ready
+      jmp_mem_far:
+	cmp	[code_type],16
+	je	jmp_mem_far_32bit
+      jmp_mem_48bit:
+	call	operand_32bit
+      jmp_mem_far_store:
+	cmp	[jump_type],2
+	je	invalid_operand_size
+	inc	[postbyte_register]
+	jmp	instruction_ready
+      jmp_mem_80bit:
+	call	operand_64bit
+	jmp	jmp_mem_far_store
+      jmp_mem_far_32bit:
+	call	operand_16bit
+	jmp	jmp_mem_far_store
+      jmp_mem_32bit:
+	cmp	[jump_type],3
+	je	jmp_mem_far_32bit
+	cmp	[jump_type],2
+	je	jmp_mem_near_32bit
+	cmp	[code_type],16
+	je	jmp_mem_far_32bit
+      jmp_mem_near_32bit:
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	operand_32bit
+	jmp	instruction_ready
+      jmp_mem_16bit:
+	cmp	[jump_type],3
+	je	invalid_operand_size
+	call	operand_16bit
+	jmp	instruction_ready
+      jmp_reg:
+	test	[jump_type],1
+	jnz	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,ah
+	cmp	al,2
+	je	jmp_reg_16bit
+	cmp	al,4
+	je	jmp_reg_32bit
+	cmp	al,8
+	jne	invalid_operand_size
+      jmp_reg_64bit:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	jmp	nomem_instruction_ready
+      jmp_reg_32bit:
+	cmp	[code_type],64
+	je	illegal_instruction
+	call	operand_32bit
+	jmp	nomem_instruction_ready
+      jmp_reg_16bit:
+	call	operand_16bit
+	jmp	nomem_instruction_ready
+      jmp_imm:
+	cmp	byte [esi],'.'
+	je	invalid_value
+	mov	ebx,esi
+	dec	esi
+	call	skip_symbol
+	xchg	esi,ebx
+	cmp	byte [ebx],':'
+	je	jmp_far
+	cmp	[jump_type],3
+	je	invalid_operand
+      jmp_near:
+	mov	al,[operand_size]
+	cmp	al,2
+	je	jmp_imm_16bit
+	cmp	al,4
+	je	jmp_imm_32bit
+	cmp	al,8
+	je	jmp_imm_64bit
+	or	al,al
+	jnz	invalid_operand_size
+	cmp	[code_type],16
+	je	jmp_imm_16bit
+	cmp	[code_type],64
+	je	jmp_imm_64bit
+      jmp_imm_32bit:
+	cmp	[code_type],64
+	je	invalid_operand_size
+	call	get_address_dword_value
+	cmp	[code_type],16
+	jne	jmp_imm_32bit_prefix_ok
+	mov	byte [edi],66h
+	inc	edi
+      jmp_imm_32bit_prefix_ok:
+	call	calculate_jump_offset
+	cdq
+	call	check_for_short_jump
+	jc	jmp_short
+      jmp_imm_32bit_store:
+	mov	edx,eax
+	sub	edx,3
+	jno	jmp_imm_32bit_ok
+	cmp	[code_type],64
+	je	relative_jump_out_of_range
+      jmp_imm_32bit_ok:
+	mov	al,[base_code]
+	stos	byte [edi]
+	mov	eax,edx
+	call	mark_relocation
+	stos	dword [edi]
+	jmp	instruction_assembled
+      jmp_imm_64bit:
+	cmp	[code_type],64
+	jne	invalid_operand_size
+	call	get_address_qword_value
+	call	calculate_jump_offset
+	mov	ecx,edx
+	cdq
+	cmp	edx,ecx
+	jne	relative_jump_out_of_range
+	call	check_for_short_jump
+	jnc	jmp_imm_32bit_store
+      jmp_short:
+	mov	ah,al
+	mov	al,0EBh
+	stos	word [edi]
+	jmp	instruction_assembled
+      jmp_imm_16bit:
+	call	get_address_word_value
+	cmp	[code_type],16
+	je	jmp_imm_16bit_prefix_ok
+	mov	byte [edi],66h
+	inc	edi
+      jmp_imm_16bit_prefix_ok:
+	call	calculate_jump_offset
+	cwde
+	cdq
+	call	check_for_short_jump
+	jc	jmp_short
+	cmp	[value_type],0
+	jne	invalid_use_of_symbol
+	mov	edx,eax
+	dec	edx
+	mov	al,[base_code]
+	stos	byte [edi]
+	mov	eax,edx
+	stos	word [edi]
+	jmp	instruction_assembled
+      calculate_jump_offset:
+	add	edi,2
+	mov	ebp,[addressing_space]
+	call	calculate_relative_offset
+	sub	edi,2
+	ret
+      check_for_short_jump:
+	cmp	[jump_type],1
+	je	forced_short
+	ja	no_short_jump
+	cmp	[base_code],0E8h
+	je	no_short_jump
+	cmp	[value_type],0
+	jne	no_short_jump
+	cmp	eax,80h
+	jb	short_jump
+	cmp	eax,-80h
+	jae	short_jump
+      no_short_jump:
+	clc
+	ret
+      forced_short:
+	cmp	[base_code],0E8h
+	je	illegal_instruction
+	cmp	[next_pass_needed],0
+	jne	jmp_short_value_type_ok
+	cmp	[value_type],0
+	jne	invalid_use_of_symbol
+      jmp_short_value_type_ok:
+	cmp	eax,-80h
+	jae	short_jump
+	cmp	eax,80h
+	jae	jump_out_of_range
+      short_jump:
+	stc
+	ret
+      jump_out_of_range:
+	cmp	[error_line],0
+	jne	instruction_assembled
+	mov	eax,[current_line]
+	mov	[error_line],eax
+	mov	[error],relative_jump_out_of_range
+	jmp	instruction_assembled
+      jmp_far:
+	cmp	[jump_type],2
+	je	invalid_operand
+	cmp	[code_type],64
+	je	illegal_instruction
+	mov	al,[extended_code]
+	mov	[base_code],al
+	call	get_word_value
+	push	eax
+	inc	esi
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_operand
+	mov	al,[value_type]
+	push	eax [symbol_identifier]
+	cmp	byte [esi],'.'
+	je	invalid_value
+	mov	al,[operand_size]
+	cmp	al,4
+	je	jmp_far_16bit
+	cmp	al,6
+	je	jmp_far_32bit
+	or	al,al
+	jnz	invalid_operand_size
+	cmp	[code_type],16
+	jne	jmp_far_32bit
+      jmp_far_16bit:
+	call	get_word_value
+	mov	ebx,eax
+	call	operand_16bit
+	call	store_instruction_code
+	mov	ax,bx
+	call	mark_relocation
+	stos	word [edi]
+      jmp_far_segment:
+	pop	[symbol_identifier] eax
+	mov	[value_type],al
+	pop	eax
+	call	mark_relocation
+	stos	word [edi]
+	jmp	instruction_assembled
+      jmp_far_32bit:
+	call	get_dword_value
+	mov	ebx,eax
+	call	operand_32bit
+	call	store_instruction_code
+	mov	eax,ebx
+	call	mark_relocation
+	stos	dword [edi]
+	jmp	jmp_far_segment
+conditional_jump:
+	mov	[base_code],al
+	lods	byte [esi]
+	call	get_jump_operator
+	cmp	[jump_type],3
+	je	invalid_operand
+	call	get_size_operator
+	cmp	al,'('
+	jne	invalid_operand
+	cmp	byte [esi],'.'
+	je	invalid_value
+	mov	al,[operand_size]
+	cmp	al,2
+	je	conditional_jump_16bit
+	cmp	al,4
+	je	conditional_jump_32bit
+	cmp	al,8
+	je	conditional_jump_64bit
+	or	al,al
+	jnz	invalid_operand_size
+	cmp	[code_type],16
+	je	conditional_jump_16bit
+	cmp	[code_type],64
+	je	conditional_jump_64bit
+      conditional_jump_32bit:
+	cmp	[code_type],64
+	je	invalid_operand_size
+	call	get_address_dword_value
+	cmp	[code_type],16
+	jne	conditional_jump_32bit_prefix_ok
+	mov	byte [edi],66h
+	inc	edi
+      conditional_jump_32bit_prefix_ok:
+	call	calculate_jump_offset
+	cdq
+	call	check_for_short_jump
+	jc	conditional_jump_short
+      conditional_jump_32bit_store:
+	mov	edx,eax
+	sub	edx,4
+	jno	conditional_jump_32bit_range_ok
+	cmp	[code_type],64
+	je	relative_jump_out_of_range
+      conditional_jump_32bit_range_ok:
+	mov	ah,[base_code]
+	add	ah,10h
+	mov	al,0Fh
+	stos	word [edi]
+	mov	eax,edx
+	call	mark_relocation
+	stos	dword [edi]
+	jmp	instruction_assembled
+      conditional_jump_64bit:
+	cmp	[code_type],64
+	jne	invalid_operand_size
+	call	get_address_qword_value
+	call	calculate_jump_offset
+	mov	ecx,edx
+	cdq
+	cmp	edx,ecx
+	jne	relative_jump_out_of_range
+	call	check_for_short_jump
+	jnc	conditional_jump_32bit_store
+      conditional_jump_short:
+	mov	ah,al
+	mov	al,[base_code]
+	stos	word [edi]
+	jmp	instruction_assembled
+      conditional_jump_16bit:
+	call	get_address_word_value
+	cmp	[code_type],16
+	je	conditional_jump_16bit_prefix_ok
+	mov	byte [edi],66h
+	inc	edi
+      conditional_jump_16bit_prefix_ok:
+	call	calculate_jump_offset
+	cwde
+	cdq
+	call	check_for_short_jump
+	jc	conditional_jump_short
+	cmp	[value_type],0
+	jne	invalid_use_of_symbol
+	mov	edx,eax
+	sub	dx,2
+	mov	ah,[base_code]
+	add	ah,10h
+	mov	al,0Fh
+	stos	word [edi]
+	mov	eax,edx
+	stos	word [edi]
+	jmp	instruction_assembled
+loop_instruction_16bit:
+	cmp	[code_type],64
+	je	illegal_instruction
+	cmp	[code_type],16
+	je	loop_instruction
+	mov	[operand_prefix],67h
+	jmp	loop_instruction
+loop_instruction_32bit:
+	cmp	[code_type],32
+	je	loop_instruction
+	mov	[operand_prefix],67h
+      jmp     loop_instruction
+loop_instruction_64bit:
+	cmp	[code_type],64
+	jne	illegal_instruction
+loop_instruction:
+	mov	[base_code],al
+	lods	byte [esi]
+	call	get_jump_operator
+	cmp	[jump_type],1
+	ja	invalid_operand
+	call	get_size_operator
+	cmp	al,'('
+	jne	invalid_operand
+	cmp	byte [esi],'.'
+	je	invalid_value
+	mov	al,[operand_size]
+	cmp	al,2
+	je	loop_jump_16bit
+	cmp	al,4
+	je	loop_jump_32bit
+	cmp	al,8
+	je	loop_jump_64bit
+	or	al,al
+	jnz	invalid_operand_size
+	cmp	[code_type],16
+	je	loop_jump_16bit
+	cmp	[code_type],64
+	je	loop_jump_64bit
+      loop_jump_32bit:
+	cmp	[code_type],64
+	je	invalid_operand_size
+	call	get_address_dword_value
+	cmp	[code_type],16
+	jne	loop_jump_32bit_prefix_ok
+	mov	byte [edi],66h
+	inc	edi
+      loop_jump_32bit_prefix_ok:
+	call	loop_counter_size
+	call	calculate_jump_offset
+	cdq
+      make_loop_jump:
+	call	check_for_short_jump
+	jc	conditional_jump_short
+	scas	word [edi]
+	jmp	jump_out_of_range
+      loop_counter_size:
+	cmp	[operand_prefix],0
+	je	loop_counter_size_ok
+	push	eax
+	mov	al,[operand_prefix]
+	stos	byte [edi]
+	pop	eax
+      loop_counter_size_ok:
+	ret
+      loop_jump_64bit:
+	cmp	[code_type],64
+	jne	invalid_operand_size
+	call	get_address_qword_value
+	call	loop_counter_size
+	call	calculate_jump_offset
+	mov	ecx,edx
+	cdq
+	cmp	edx,ecx
+	jne	relative_jump_out_of_range
+	jmp	make_loop_jump
+      loop_jump_16bit:
+	call	get_address_word_value
+	cmp	[code_type],16
+	je	loop_jump_16bit_prefix_ok
+	mov	byte [edi],66h
+	inc	edi
+      loop_jump_16bit_prefix_ok:
+	call	loop_counter_size
+	call	calculate_jump_offset
+	cwde
+	cdq
+	jmp	make_loop_jump
+
+movs_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	or	eax,eax
+	jnz	invalid_address
+	or	bl,ch
+	jnz	invalid_address
+	cmp	[segment_register],1
+	ja	invalid_address
+	push	ebx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	pop	edx
+	or	eax,eax
+	jnz	invalid_address
+	or	bl,ch
+	jnz	invalid_address
+	mov	al,dh
+	mov	ah,bh
+	shr	al,4
+	shr	ah,4
+	cmp	al,ah
+	jne	address_sizes_do_not_agree
+	and	bh,111b
+	and	dh,111b
+	cmp	bh,6
+	jne	invalid_address
+	cmp	dh,7
+	jne	invalid_address
+	cmp	al,2
+	je	movs_address_16bit
+	cmp	al,4
+	je	movs_address_32bit
+	cmp	[code_type],64
+	jne	invalid_address_size
+	jmp	movs_store
+      movs_address_32bit:
+	call	address_32bit_prefix
+	jmp	movs_store
+      movs_address_16bit:
+	cmp	[code_type],64
+	je	invalid_address_size
+	call	address_16bit_prefix
+      movs_store:
+	xor	ebx,ebx
+	call	store_segment_prefix_if_necessary
+	mov	al,0A4h
+      movs_check_size:
+	mov	bl,[operand_size]
+	cmp	bl,1
+	je	simple_instruction
+	inc	al
+	cmp	bl,2
+	je	simple_instruction_16bit
+	cmp	bl,4
+	je	simple_instruction_32bit
+	cmp	bl,8
+	je	simple_instruction_64bit
+	or	bl,bl
+	jnz	invalid_operand_size
+	call	recoverable_unknown_size
+	jmp	simple_instruction
+lods_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	or	eax,eax
+	jnz	invalid_address
+	or	bl,ch
+	jnz	invalid_address
+	cmp	bh,26h
+	je	lods_address_16bit
+	cmp	bh,46h
+	je	lods_address_32bit
+	cmp	bh,86h
+	jne	invalid_address
+	cmp	[code_type],64
+	jne	invalid_address_size
+	jmp	lods_store
+      lods_address_32bit:
+	call	address_32bit_prefix
+	jmp	lods_store
+      lods_address_16bit:
+	cmp	[code_type],64
+	je	invalid_address_size
+	call	address_16bit_prefix
+      lods_store:
+	xor	ebx,ebx
+	call	store_segment_prefix_if_necessary
+	mov	al,0ACh
+	jmp	movs_check_size
+stos_instruction:
+	mov	[base_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	or	eax,eax
+	jnz	invalid_address
+	or	bl,ch
+	jnz	invalid_address
+	cmp	bh,27h
+	je	stos_address_16bit
+	cmp	bh,47h
+	je	stos_address_32bit
+	cmp	bh,87h
+	jne	invalid_address
+	cmp	[code_type],64
+	jne	invalid_address_size
+	jmp	stos_store
+      stos_address_32bit:
+	call	address_32bit_prefix
+	jmp	stos_store
+      stos_address_16bit:
+	cmp	[code_type],64
+	je	invalid_address_size
+	call	address_16bit_prefix
+      stos_store:
+	cmp	[segment_register],1
+	ja	invalid_address
+	mov	al,[base_code]
+	jmp	movs_check_size
+cmps_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	or	eax,eax
+	jnz	invalid_address
+	or	bl,ch
+	jnz	invalid_address
+	mov	al,[segment_register]
+	push	eax ebx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	or	eax,eax
+	jnz	invalid_address
+	or	bl,ch
+	jnz	invalid_address
+	pop	edx eax
+	cmp	[segment_register],1
+	ja	invalid_address
+	mov	[segment_register],al
+	mov	al,dh
+	mov	ah,bh
+	shr	al,4
+	shr	ah,4
+	cmp	al,ah
+	jne	address_sizes_do_not_agree
+	and	bh,111b
+	and	dh,111b
+	cmp	bh,7
+	jne	invalid_address
+	cmp	dh,6
+	jne	invalid_address
+	cmp	al,2
+	je	cmps_address_16bit
+	cmp	al,4
+	je	cmps_address_32bit
+	cmp	[code_type],64
+	jne	invalid_address_size
+	jmp	cmps_store
+      cmps_address_32bit:
+	call	address_32bit_prefix
+	jmp	cmps_store
+      cmps_address_16bit:
+	cmp	[code_type],64
+	je	invalid_address_size
+	call	address_16bit_prefix
+      cmps_store:
+	xor	ebx,ebx
+	call	store_segment_prefix_if_necessary
+	mov	al,0A6h
+	jmp	movs_check_size
+ins_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	or	eax,eax
+	jnz	invalid_address
+	or	bl,ch
+	jnz	invalid_address
+	cmp	bh,27h
+	je	ins_address_16bit
+	cmp	bh,47h
+	je	ins_address_32bit
+	cmp	bh,87h
+	jne	invalid_address
+	cmp	[code_type],64
+	jne	invalid_address_size
+	jmp	ins_store
+      ins_address_32bit:
+	call	address_32bit_prefix
+	jmp	ins_store
+      ins_address_16bit:
+	cmp	[code_type],64
+	je	invalid_address_size
+	call	address_16bit_prefix
+      ins_store:
+	cmp	[segment_register],1
+	ja	invalid_address
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,22h
+	jne	invalid_operand
+	mov	al,6Ch
+      ins_check_size:
+	cmp	[operand_size],8
+	jne	movs_check_size
+	jmp	invalid_operand_size
+outs_instruction:
+	lods	byte [esi]
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,22h
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	or	eax,eax
+	jnz	invalid_address
+	or	bl,ch
+	jnz	invalid_address
+	cmp	bh,26h
+	je	outs_address_16bit
+	cmp	bh,46h
+	je	outs_address_32bit
+	cmp	bh,86h
+	jne	invalid_address
+	cmp	[code_type],64
+	jne	invalid_address_size
+	jmp	outs_store
+      outs_address_32bit:
+	call	address_32bit_prefix
+	jmp	outs_store
+      outs_address_16bit:
+	cmp	[code_type],64
+	je	invalid_address_size
+	call	address_16bit_prefix
+      outs_store:
+	xor	ebx,ebx
+	call	store_segment_prefix_if_necessary
+	mov	al,6Eh
+	jmp	ins_check_size
+xlat_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	or	eax,eax
+	jnz	invalid_address
+	or	bl,ch
+	jnz	invalid_address
+	cmp	bh,23h
+	je	xlat_address_16bit
+	cmp	bh,43h
+	je	xlat_address_32bit
+	cmp	bh,83h
+	jne	invalid_address
+	cmp	[code_type],64
+	jne	invalid_address_size
+	jmp	xlat_store
+      xlat_address_32bit:
+	call	address_32bit_prefix
+	jmp	xlat_store
+      xlat_address_16bit:
+	cmp	[code_type],64
+	je	invalid_address_size
+	call	address_16bit_prefix
+      xlat_store:
+	call	store_segment_prefix_if_necessary
+	mov	al,0D7h
+	cmp	[operand_size],1
+	jbe	simple_instruction
+	jmp	invalid_operand_size
+
+pm_word_instruction:
+	mov	ah,al
+	shr	ah,4
+	and	al,111b
+	mov	[base_code],0Fh
+	mov	[extended_code],ah
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	pm_reg
+      pm_mem:
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,2
+	je	pm_mem_store
+	or	al,al
+	jnz	invalid_operand_size
+      pm_mem_store:
+	jmp	instruction_ready
+      pm_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	cmp	ah,2
+	jne	invalid_operand_size
+	jmp	nomem_instruction_ready
+pm_store_word_instruction:
+	mov	ah,al
+	shr	ah,4
+	and	al,111b
+	mov	[base_code],0Fh
+	mov	[extended_code],ah
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	pm_mem
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,ah
+	call	operand_autodetect
+	jmp	nomem_instruction_ready
+lgdt_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],1
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,6
+	je	lgdt_mem_48bit
+	cmp	al,10
+	je	lgdt_mem_80bit
+	or	al,al
+	jnz	invalid_operand_size
+	jmp	lgdt_mem_store
+      lgdt_mem_80bit:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	jmp	lgdt_mem_store
+      lgdt_mem_48bit:
+	cmp	[code_type],64
+	je	illegal_instruction
+	cmp	[postbyte_register],2
+	jb	lgdt_mem_store
+	call	operand_32bit
+      lgdt_mem_store:
+	jmp	instruction_ready
+lar_instruction:
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	xor	al,al
+	xchg	al,[operand_size]
+	call	operand_autodetect
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	lar_reg_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	or	al,al
+	jz	lar_reg_mem
+	cmp	al,2
+	jne	invalid_operand_size
+      lar_reg_mem:
+	jmp	instruction_ready
+      lar_reg_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	ah,2
+	jne	invalid_operand_size
+	mov	bl,al
+	jmp	nomem_instruction_ready
+invlpg_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],1
+	mov	[postbyte_register],7
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	jmp	instruction_ready
+swapgs_instruction:
+	cmp	[code_type],64
+	jne	illegal_instruction
+rdtscp_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],1
+	mov	[postbyte_register],7
+	mov	bl,al
+	jmp	nomem_instruction_ready
+
+basic_486_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	basic_486_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	push	edx ebx ecx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	mov	al,ah
+	cmp	al,1
+	je	basic_486_mem_reg_8bit
+	call	operand_autodetect
+	inc	[extended_code]
+      basic_486_mem_reg_8bit:
+	jmp	instruction_ready
+      basic_486_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,[postbyte_register]
+	mov	[postbyte_register],al
+	mov	al,ah
+	cmp	al,1
+	je	basic_486_reg_reg_8bit
+	call	operand_autodetect
+	inc	[extended_code]
+      basic_486_reg_reg_8bit:
+	jmp	nomem_instruction_ready
+bswap_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	test	al,1000b
+	jz	bswap_reg_code_ok
+	or	[rex_prefix],41h
+	and	al,111b
+      bswap_reg_code_ok:
+	add	al,0C8h
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	cmp	ah,8
+	je	bswap_reg64
+	cmp	ah,4
+	jne	invalid_operand_size
+	call	operand_32bit
+	call	store_instruction_code
+	jmp	instruction_assembled
+      bswap_reg64:
+	call	operand_64bit
+	call	store_instruction_code
+	jmp	instruction_assembled
+cmpxchgx_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],0C7h
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	ah,1
+	xchg	[postbyte_register],ah
+	mov	al,[operand_size]
+	or	al,al
+	jz	cmpxchgx_size_ok
+	cmp	al,ah
+	jne	invalid_operand_size
+      cmpxchgx_size_ok:
+	cmp	ah,16
+	jne	cmpxchgx_store
+	call	operand_64bit
+      cmpxchgx_store:
+	jmp	instruction_ready
+nop_instruction:
+	mov	ah,[esi]
+	cmp	ah,10h
+	je	extended_nop
+	cmp	ah,11h
+	je	extended_nop
+	cmp	ah,'['
+	je	extended_nop
+	stos	byte [edi]
+	jmp	instruction_assembled
+      extended_nop:
+	mov	[base_code],0Fh
+	mov	[extended_code],1Fh
+	mov	[postbyte_register],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	extended_nop_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	or	al,al
+	jz	extended_nop_store
+	call	operand_autodetect
+      extended_nop_store:
+	jmp	instruction_ready
+      extended_nop_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,ah
+	call	operand_autodetect
+	jmp	nomem_instruction_ready
+
+basic_fpu_instruction:
+	mov	[postbyte_register],al
+	mov	[base_code],0D8h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	basic_fpu_streg
+	cmp	al,'['
+	je	basic_fpu_mem
+	dec	esi
+	mov	ah,[postbyte_register]
+	cmp	ah,2
+	jb	invalid_operand
+	cmp	ah,3
+	ja	invalid_operand
+	mov	bl,1
+	jmp	nomem_instruction_ready
+      basic_fpu_mem:
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,4
+	je	basic_fpu_mem_32bit
+	cmp	al,8
+	je	basic_fpu_mem_64bit
+	or	al,al
+	jnz	invalid_operand_size
+	call	recoverable_unknown_size
+      basic_fpu_mem_32bit:
+	jmp	instruction_ready
+      basic_fpu_mem_64bit:
+	mov	[base_code],0DCh
+	jmp	instruction_ready
+      basic_fpu_streg:
+	lods	byte [esi]
+	call	convert_fpu_register
+	mov	bl,al
+	mov	ah,[postbyte_register]
+	cmp	ah,2
+	je	basic_fpu_single_streg
+	cmp	ah,3
+	je	basic_fpu_single_streg
+	or	al,al
+	jz	basic_fpu_st0
+	test	ah,110b
+	jz	basic_fpu_streg_st0
+	xor	[postbyte_register],1
+      basic_fpu_streg_st0:
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_fpu_register
+	or	al,al
+	jnz	invalid_operand
+	mov	[base_code],0DCh
+	jmp	nomem_instruction_ready
+      basic_fpu_st0:
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_fpu_register
+	mov	bl,al
+      basic_fpu_single_streg:
+	mov	[base_code],0D8h
+	jmp	nomem_instruction_ready
+simple_fpu_instruction:
+	mov	ah,al
+	or	ah,11000000b
+	mov	al,0D9h
+	stos	word [edi]
+	jmp	instruction_assembled
+fi_instruction:
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,2
+	je	fi_mem_16bit
+	cmp	al,4
+	je	fi_mem_32bit
+	or	al,al
+	jnz	invalid_operand_size
+	call	recoverable_unknown_size
+      fi_mem_32bit:
+	mov	[base_code],0DAh
+	jmp	instruction_ready
+      fi_mem_16bit:
+	mov	[base_code],0DEh
+	jmp	instruction_ready
+fld_instruction:
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	fld_streg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,4
+	je	fld_mem_32bit
+	cmp	al,8
+	je	fld_mem_64bit
+	cmp	al,10
+	je	fld_mem_80bit
+	or	al,al
+	jnz	invalid_operand_size
+	call	recoverable_unknown_size
+      fld_mem_32bit:
+	mov	[base_code],0D9h
+	jmp	instruction_ready
+      fld_mem_64bit:
+	mov	[base_code],0DDh
+	jmp	instruction_ready
+      fld_mem_80bit:
+	mov	al,[postbyte_register]
+	cmp	al,0
+	je	fld_mem_80bit_store
+	dec	[postbyte_register]
+	cmp	al,3
+	je	fld_mem_80bit_store
+	jmp	invalid_operand_size
+      fld_mem_80bit_store:
+	add	[postbyte_register],5
+	mov	[base_code],0DBh
+	jmp	instruction_ready
+      fld_streg:
+	lods	byte [esi]
+	call	convert_fpu_register
+	mov	bl,al
+	cmp	[postbyte_register],2
+	jae	fst_streg
+	mov	[base_code],0D9h
+	jmp	nomem_instruction_ready
+      fst_streg:
+	mov	[base_code],0DDh
+	jmp	nomem_instruction_ready
+fild_instruction:
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,2
+	je	fild_mem_16bit
+	cmp	al,4
+	je	fild_mem_32bit
+	cmp	al,8
+	je	fild_mem_64bit
+	or	al,al
+	jnz	invalid_operand_size
+	call	recoverable_unknown_size
+      fild_mem_32bit:
+	mov	[base_code],0DBh
+	jmp	instruction_ready
+      fild_mem_16bit:
+	mov	[base_code],0DFh
+	jmp	instruction_ready
+      fild_mem_64bit:
+	mov	al,[postbyte_register]
+	cmp	al,1
+	je	fisttp_64bit_store
+	jb	fild_mem_64bit_store
+	dec	[postbyte_register]
+	cmp	al,3
+	je	fild_mem_64bit_store
+	jmp	invalid_operand_size
+      fild_mem_64bit_store:
+	add	[postbyte_register],5
+	mov	[base_code],0DFh
+	jmp	instruction_ready
+      fisttp_64bit_store:
+	mov	[base_code],0DDh
+	jmp	instruction_ready
+fbld_instruction:
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	or	al,al
+	jz	fbld_mem_80bit
+	cmp	al,10
+	je	fbld_mem_80bit
+	jmp	invalid_operand_size
+      fbld_mem_80bit:
+	mov	[base_code],0DFh
+	jmp	instruction_ready
+faddp_instruction:
+	mov	[postbyte_register],al
+	mov	[base_code],0DEh
+	mov	edx,esi
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	faddp_streg
+	mov	esi,edx
+	mov	bl,1
+	jmp	nomem_instruction_ready
+      faddp_streg:
+	lods	byte [esi]
+	call	convert_fpu_register
+	mov	bl,al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_fpu_register
+	or	al,al
+	jnz	invalid_operand
+	jmp	nomem_instruction_ready
+fcompp_instruction:
+	mov	ax,0D9DEh
+	stos	word [edi]
+	jmp	instruction_assembled
+fucompp_instruction:
+	mov	ax,0E9DAh
+	stos	word [edi]
+	jmp	instruction_assembled
+fxch_instruction:
+	mov	dx,01D9h
+	jmp	fpu_single_operand
+ffreep_instruction:
+	mov	dx,00DFh
+	jmp	fpu_single_operand
+ffree_instruction:
+	mov	dl,0DDh
+	mov	dh,al
+      fpu_single_operand:
+	mov	ebx,esi
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	fpu_streg
+	or	dh,dh
+	jz	invalid_operand
+	mov	esi,ebx
+	shl	dh,3
+	or	dh,11000001b
+	mov	ax,dx
+	stos	word [edi]
+	jmp	instruction_assembled
+      fpu_streg:
+	lods	byte [esi]
+	call	convert_fpu_register
+	shl	dh,3
+	or	dh,al
+	or	dh,11000000b
+	mov	ax,dx
+	stos	word [edi]
+	jmp	instruction_assembled
+
+fstenv_instruction:
+	mov	byte [edi],9Bh
+	inc	edi
+fldenv_instruction:
+	mov	[base_code],0D9h
+	jmp	fpu_mem
+fstenv_instruction_16bit:
+	mov	byte [edi],9Bh
+	inc	edi
+fldenv_instruction_16bit:
+	call	operand_16bit
+	jmp	fldenv_instruction
+fstenv_instruction_32bit:
+	mov	byte [edi],9Bh
+	inc	edi
+fldenv_instruction_32bit:
+	call	operand_32bit
+	jmp	fldenv_instruction
+fsave_instruction_32bit:
+	mov	byte [edi],9Bh
+	inc	edi
+fnsave_instruction_32bit:
+	call	operand_32bit
+	jmp	fnsave_instruction
+fsave_instruction_16bit:
+	mov	byte [edi],9Bh
+	inc	edi
+fnsave_instruction_16bit:
+	call	operand_16bit
+	jmp	fnsave_instruction
+fsave_instruction:
+	mov	byte [edi],9Bh
+	inc	edi
+fnsave_instruction:
+	mov	[base_code],0DDh
+      fpu_mem:
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],0
+	jne	invalid_operand_size
+	jmp	instruction_ready
+fstcw_instruction:
+	mov	byte [edi],9Bh
+	inc	edi
+fldcw_instruction:
+	mov	[postbyte_register],al
+	mov	[base_code],0D9h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	or	al,al
+	jz	fldcw_mem_16bit
+	cmp	al,2
+	je	fldcw_mem_16bit
+	jmp	invalid_operand_size
+      fldcw_mem_16bit:
+	jmp	instruction_ready
+fstsw_instruction:
+	mov	al,9Bh
+	stos	byte [edi]
+fnstsw_instruction:
+	mov	[base_code],0DDh
+	mov	[postbyte_register],7
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	fstsw_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	or	al,al
+	jz	fstsw_mem_16bit
+	cmp	al,2
+	je	fstsw_mem_16bit
+	jmp	invalid_operand_size
+      fstsw_mem_16bit:
+	jmp	instruction_ready
+      fstsw_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	ax,0200h
+	jne	invalid_operand
+	mov	ax,0E0DFh
+	stos	word [edi]
+	jmp	instruction_assembled
+finit_instruction:
+	mov	byte [edi],9Bh
+	inc	edi
+fninit_instruction:
+	mov	ah,al
+	mov	al,0DBh
+	stos	word [edi]
+	jmp	instruction_assembled
+fcmov_instruction:
+	mov	dh,0DAh
+	jmp	fcomi_streg
+fcomi_instruction:
+	mov	dh,0DBh
+	jmp	fcomi_streg
+fcomip_instruction:
+	mov	dh,0DFh
+      fcomi_streg:
+	mov	dl,al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_fpu_register
+	mov	ah,al
+	cmp	byte [esi],','
+	je	fcomi_st0_streg
+	add	ah,dl
+	mov	al,dh
+	stos	word [edi]
+	jmp	instruction_assembled
+      fcomi_st0_streg:
+	or	ah,ah
+	jnz	invalid_operand
+	inc	esi
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_fpu_register
+	mov	ah,al
+	add	ah,dl
+	mov	al,dh
+	stos	word [edi]
+	jmp	instruction_assembled
+
+basic_mmx_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+      mmx_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	call	make_mmx_prefix
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	mmx_mmreg_mmreg
+	cmp	al,'['
+	jne	invalid_operand
+      mmx_mmreg_mem:
+	call	get_address
+	jmp	instruction_ready
+      mmx_mmreg_mmreg:
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	bl,al
+	jmp	nomem_instruction_ready
+mmx_bit_shift_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	call	make_mmx_prefix
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	mmx_mmreg_mmreg
+	cmp	al,'('
+	je	mmx_ps_mmreg_imm8
+	cmp	al,'['
+	je	mmx_mmreg_mem
+	jmp	invalid_operand
+      mmx_ps_mmreg_imm8:
+	call	get_byte_value
+	mov	byte [value],al
+	test	[operand_size],not 1
+	jnz	invalid_value
+	mov	bl,[extended_code]
+	mov	al,bl
+	shr	bl,4
+	and	al,1111b
+	add	al,70h
+	mov	[extended_code],al
+	sub	bl,0Ch
+	shl	bl,1
+	xchg	bl,[postbyte_register]
+	call	store_nomem_instruction
+	mov	al,byte [value]
+	stos	byte [edi]
+	jmp	instruction_assembled
+pmovmskb_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	cmp	ah,4
+	je	pmovmskb_reg_size_ok
+	cmp	[code_type],64
+	jne	invalid_operand_size
+	cmp	ah,8
+	jnz	invalid_operand_size
+      pmovmskb_reg_size_ok:
+	mov	[postbyte_register],al
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	bl,al
+	call	make_mmx_prefix
+	cmp	[extended_code],0C5h
+	je	mmx_nomem_imm8
+	jmp	nomem_instruction_ready
+      mmx_imm8:
+	push	ebx ecx edx
+	xor	cl,cl
+	xchg	cl,[operand_size]
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	test	ah,not 1
+	jnz	invalid_operand_size
+	mov	[operand_size],cl
+	cmp	al,'('
+	jne	invalid_operand
+	call	get_byte_value
+	mov	byte [value],al
+	pop	edx ecx ebx
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      mmx_nomem_imm8:
+	call	store_nomem_instruction
+	call	append_imm8
+	jmp	instruction_assembled
+      append_imm8:
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	test	ah,not 1
+	jnz	invalid_operand_size
+	cmp	al,'('
+	jne	invalid_operand
+	call	get_byte_value
+	stosb
+	ret
+pinsrw_instruction:
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	call	make_mmx_prefix
+	mov	[postbyte_register],al
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	pinsrw_mmreg_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],0
+	je	mmx_imm8
+	cmp	[operand_size],2
+	jne	invalid_operand_size
+	jmp	mmx_imm8
+      pinsrw_mmreg_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	ah,4
+	jne	invalid_operand_size
+	mov	bl,al
+	jmp	mmx_nomem_imm8
+pshufw_instruction:
+	mov	[mmx_size],8
+	mov	[opcode_prefix],al
+	jmp	pshuf_instruction
+pshufd_instruction:
+	mov	[mmx_size],16
+	mov	[opcode_prefix],al
+      pshuf_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],70h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	cmp	ah,[mmx_size]
+	jne	invalid_operand_size
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	pshuf_mmreg_mmreg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	jmp	mmx_imm8
+      pshuf_mmreg_mmreg:
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	bl,al
+	jmp	mmx_nomem_imm8
+movd_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],7Eh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	movd_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	test	[operand_size],not 4
+	jnz	invalid_operand_size
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	call	make_mmx_prefix
+	mov	[postbyte_register],al
+	jmp	instruction_ready
+      movd_reg:
+	lods	byte [esi]
+	cmp	al,0B0h
+	jae	movd_mmreg
+	call	convert_register
+	cmp	ah,4
+	jne	invalid_operand_size
+	mov	[operand_size],0
+	mov	bl,al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	[postbyte_register],al
+	call	make_mmx_prefix
+	jmp	nomem_instruction_ready
+      movd_mmreg:
+	mov	[extended_code],6Eh
+	call	convert_mmx_register
+	call	make_mmx_prefix
+	mov	[postbyte_register],al
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	movd_mmreg_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	test	[operand_size],not 4
+	jnz	invalid_operand_size
+	jmp	instruction_ready
+      movd_mmreg_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	ah,4
+	jne	invalid_operand_size
+	mov	bl,al
+	jmp	nomem_instruction_ready
+      make_mmx_prefix:
+	cmp	[vex_required],0
+	jne	mmx_prefix_for_vex
+	cmp	[operand_size],16
+	jne	no_mmx_prefix
+	mov	[operand_prefix],66h
+      no_mmx_prefix:
+	ret
+      mmx_prefix_for_vex:
+	cmp	[operand_size],16
+	jne	invalid_operand
+	mov	[opcode_prefix],66h
+	ret
+movq_instruction:
+	mov	[base_code],0Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	movq_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	test	[operand_size],not 8
+	jnz	invalid_operand_size
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	[postbyte_register],al
+	cmp	ah,16
+	je	movq_mem_xmmreg
+	mov	[extended_code],7Fh
+	jmp	instruction_ready
+     movq_mem_xmmreg:
+	mov	[extended_code],0D6h
+	mov	[opcode_prefix],66h
+	jmp	instruction_ready
+     movq_reg:
+	lods	byte [esi]
+	cmp	al,0B0h
+	jae	movq_mmreg
+	call	convert_register
+	cmp	ah,8
+	jne	invalid_operand_size
+	mov	bl,al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	[postbyte_register],al
+	call	make_mmx_prefix
+	mov	[extended_code],7Eh
+	call	operand_64bit
+	jmp	nomem_instruction_ready
+     movq_mmreg:
+	call	convert_mmx_register
+	mov	[postbyte_register],al
+	mov	[extended_code],6Fh
+	mov	[mmx_size],ah
+	cmp	ah,16
+	jne	movq_mmreg_
+	mov	[extended_code],7Eh
+	mov	[opcode_prefix],0F3h
+      movq_mmreg_:
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	movq_mmreg_reg
+	call	get_address
+	test	[operand_size],not 8
+	jnz	invalid_operand_size
+	jmp	instruction_ready
+      movq_mmreg_reg:
+	lods	byte [esi]
+	cmp	al,0B0h
+	jae	movq_mmreg_mmreg
+	mov	[operand_size],0
+	call	convert_register
+	cmp	ah,8
+	jne	invalid_operand_size
+	mov	[extended_code],6Eh
+	mov	[opcode_prefix],0
+	mov	bl,al
+	cmp	[mmx_size],16
+	jne	movq_mmreg_reg_store
+	mov	[opcode_prefix],66h
+      movq_mmreg_reg_store:
+	call	operand_64bit
+	jmp	nomem_instruction_ready
+      movq_mmreg_mmreg:
+	call	convert_mmx_register
+	cmp	ah,[mmx_size]
+	jne	invalid_operand_size
+	mov	bl,al
+	jmp	nomem_instruction_ready
+movdq_instruction:
+	mov	[opcode_prefix],al
+	mov	[base_code],0Fh
+	mov	[extended_code],6Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	movdq_mmreg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	mov	[extended_code],7Fh
+	jmp	instruction_ready
+      movdq_mmreg:
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	movdq_mmreg_mmreg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	jmp	instruction_ready
+      movdq_mmreg_mmreg:
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	bl,al
+	jmp	nomem_instruction_ready
+lddqu_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	push	eax
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	pop	eax
+	mov	[postbyte_register],al
+	mov	[opcode_prefix],0F2h
+	mov	[base_code],0Fh
+	mov	[extended_code],0F0h
+	jmp	instruction_ready
+
+movdq2q_instruction:
+	mov	[opcode_prefix],0F2h
+	mov	[mmx_size],8
+	jmp	movq2dq_
+movq2dq_instruction:
+	mov	[opcode_prefix],0F3h
+	mov	[mmx_size],16
+      movq2dq_:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	cmp	ah,[mmx_size]
+	jne	invalid_operand_size
+	mov	[postbyte_register],al
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	xor	[mmx_size],8+16
+	cmp	ah,[mmx_size]
+	jne	invalid_operand_size
+	mov	bl,al
+	mov	[base_code],0Fh
+	mov	[extended_code],0D6h
+	jmp	nomem_instruction_ready
+
+sse_ps_instruction_imm8:
+	mov	[immediate_size],1
+sse_ps_instruction:
+	mov	[mmx_size],16
+	jmp	sse_instruction
+sse_pd_instruction_imm8:
+	mov	[immediate_size],1
+sse_pd_instruction:
+	mov	[mmx_size],16
+	mov	[opcode_prefix],66h
+	jmp	sse_instruction
+sse_ss_instruction:
+	mov	[mmx_size],4
+	mov	[opcode_prefix],0F3h
+	jmp	sse_instruction
+sse_sd_instruction:
+	mov	[mmx_size],8
+	mov	[opcode_prefix],0F2h
+	jmp	sse_instruction
+cmp_pd_instruction:
+	mov	[opcode_prefix],66h
+cmp_ps_instruction:
+	mov	[mmx_size],16
+	mov	byte [value],al
+	mov	al,0C2h
+	jmp	sse_instruction
+cmp_ss_instruction:
+	mov	[mmx_size],4
+	mov	[opcode_prefix],0F3h
+	jmp	cmp_sx_instruction
+cmpsd_instruction:
+	mov	al,0A7h
+	mov	ah,[esi]
+	or	ah,ah
+	jz	simple_instruction_32bit
+	cmp	ah,0Fh
+	je	simple_instruction_32bit
+	mov	al,-1
+cmp_sd_instruction:
+	mov	[mmx_size],8
+	mov	[opcode_prefix],0F2h
+      cmp_sx_instruction:
+	mov	byte [value],al
+	mov	al,0C2h
+	jmp	sse_instruction
+comiss_instruction:
+	mov	[mmx_size],4
+	jmp	sse_instruction
+comisd_instruction:
+	mov	[mmx_size],8
+	mov	[opcode_prefix],66h
+	jmp	sse_instruction
+cvtdq2pd_instruction:
+	mov	[opcode_prefix],0F3h
+cvtps2pd_instruction:
+	mov	[mmx_size],8
+	jmp	sse_instruction
+cvtpd2dq_instruction:
+	mov	[mmx_size],16
+	mov	[opcode_prefix],0F2h
+	jmp	sse_instruction
+movshdup_instruction:
+	mov	[mmx_size],16
+	mov	[opcode_prefix],0F3h
+sse_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+      sse_xmmreg:
+	lods	byte [esi]
+	call	convert_xmm_register
+      sse_reg:
+	mov	[postbyte_register],al
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	sse_xmmreg_xmmreg
+      sse_reg_mem:
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],0
+	je	sse_mem_size_ok
+	mov	al,[mmx_size]
+	cmp	[operand_size],al
+	jne	invalid_operand_size
+      sse_mem_size_ok:
+	mov	al,[extended_code]
+	mov	ah,[supplemental_code]
+	cmp	al,0C2h
+	je	sse_cmp_mem_ok
+	cmp	ax,443Ah
+	je	sse_cmp_mem_ok
+	cmp	[immediate_size],1
+	je	mmx_imm8
+	cmp	[immediate_size],-1
+	jne	sse_ok
+	call	take_additional_xmm0
+	mov	[immediate_size],0
+      sse_ok:
+	jmp	instruction_ready
+      sse_cmp_mem_ok:
+	cmp	byte [value],-1
+	je	mmx_imm8
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      sse_xmmreg_xmmreg:
+	cmp	[operand_prefix],66h
+	jne	sse_xmmreg_xmmreg_ok
+	cmp	[extended_code],12h
+	je	invalid_operand
+	cmp	[extended_code],16h
+	je	invalid_operand
+      sse_xmmreg_xmmreg_ok:
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	bl,al
+	mov	al,[extended_code]
+	mov	ah,[supplemental_code]
+	cmp	al,0C2h
+	je	sse_cmp_nomem_ok
+	cmp	ax,443Ah
+	je	sse_cmp_nomem_ok
+	cmp	[immediate_size],1
+	je	mmx_nomem_imm8
+	cmp	[immediate_size],-1
+	jne	sse_nomem_ok
+	call	take_additional_xmm0
+	mov	[immediate_size],0
+      sse_nomem_ok:
+	jmp	nomem_instruction_ready
+      sse_cmp_nomem_ok:
+	cmp	byte [value],-1
+	je	mmx_nomem_imm8
+	call	store_nomem_instruction
+	mov	al,byte [value]
+	stosb
+	jmp	instruction_assembled
+      take_additional_xmm0:
+	cmp	byte [esi],','
+	jne	additional_xmm0_ok
+	inc	esi
+	lods	byte [esi]
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	test	al,al
+	jnz	invalid_operand
+      additional_xmm0_ok:
+	ret
+
+pslldq_instruction:
+	mov	[postbyte_register],al
+	mov	[opcode_prefix],66h
+	mov	[base_code],0Fh
+	mov	[extended_code],73h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	bl,al
+	jmp	mmx_nomem_imm8
+movpd_instruction:
+	mov	[opcode_prefix],66h
+movps_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	mov	[mmx_size],16
+	jmp	sse_mov_instruction
+movss_instruction:
+	mov	[mmx_size],4
+	mov	[opcode_prefix],0F3h
+	jmp	sse_movs
+movsd_instruction:
+	mov	al,0A5h
+	mov	ah,[esi]
+	or	ah,ah
+	jz	simple_instruction_32bit
+	cmp	ah,0Fh
+	je	simple_instruction_32bit
+	mov	[mmx_size],8
+	mov	[opcode_prefix],0F2h
+      sse_movs:
+	mov	[base_code],0Fh
+	mov	[extended_code],10h
+	jmp	sse_mov_instruction
+sse_mov_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	sse_xmmreg
+      sse_mem:
+	cmp	al,'['
+	jne	invalid_operand
+	inc	[extended_code]
+	call	get_address
+	cmp	[operand_size],0
+	je	sse_mem_xmmreg
+	mov	al,[mmx_size]
+	cmp	[operand_size],al
+	jne	invalid_operand_size
+	mov	[operand_size],0
+      sse_mem_xmmreg:
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	jmp	instruction_ready
+movlpd_instruction:
+	mov	[opcode_prefix],66h
+movlps_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	mov	[mmx_size],8
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	sse_mem
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	jmp	sse_reg_mem
+movhlps_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	mov	[mmx_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	sse_xmmreg_xmmreg_ok
+	jmp	invalid_operand
+maskmovq_instruction:
+	mov	cl,8
+	jmp	maskmov_instruction
+maskmovdqu_instruction:
+	mov	cl,16
+	mov	[opcode_prefix],66h
+      maskmov_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],0F7h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	cmp	ah,cl
+	jne	invalid_operand_size
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	bl,al
+	jmp	nomem_instruction_ready
+movmskpd_instruction:
+	mov	[opcode_prefix],66h
+movmskps_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],50h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	cmp	ah,4
+	je	movmskps_reg_ok
+	cmp	ah,8
+	jne	invalid_operand_size
+	cmp	[code_type],64
+	jne	invalid_operand
+      movmskps_reg_ok:
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	sse_xmmreg_xmmreg_ok
+	jmp	invalid_operand
+
+cvtpi2pd_instruction:
+	mov	[opcode_prefix],66h
+cvtpi2ps_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	cvtpi_xmmreg_xmmreg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],0
+	je	cvtpi_size_ok
+	cmp	[operand_size],8
+	jne	invalid_operand_size
+      cvtpi_size_ok:
+	jmp	instruction_ready
+      cvtpi_xmmreg_xmmreg:
+	lods	byte [esi]
+	call	convert_mmx_register
+	cmp	ah,8
+	jne	invalid_operand_size
+	mov	bl,al
+	jmp	nomem_instruction_ready
+cvtsi2ss_instruction:
+	mov	[opcode_prefix],0F3h
+	jmp	cvtsi_instruction
+cvtsi2sd_instruction:
+	mov	[opcode_prefix],0F2h
+      cvtsi_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+      cvtsi_xmmreg:
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	cvtsi_xmmreg_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],0
+	je	cvtsi_size_ok
+	cmp	[operand_size],4
+	je	cvtsi_size_ok
+	cmp	[operand_size],8
+	jne	invalid_operand_size
+	call	operand_64bit
+      cvtsi_size_ok:
+	jmp	instruction_ready
+      cvtsi_xmmreg_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	ah,4
+	je	cvtsi_xmmreg_reg_store
+	cmp	ah,8
+	jne	invalid_operand_size
+	call	operand_64bit
+      cvtsi_xmmreg_reg_store:
+	mov	bl,al
+	jmp	nomem_instruction_ready
+cvtps2pi_instruction:
+	mov	[mmx_size],8
+	jmp	cvtpd_instruction
+cvtpd2pi_instruction:
+	mov	[opcode_prefix],66h
+	mov	[mmx_size],16
+      cvtpd_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	cmp	ah,8
+	jne	invalid_operand_size
+	mov	[operand_size],0
+	jmp	sse_reg
+cvtss2si_instruction:
+	mov	[opcode_prefix],0F3h
+	mov	[mmx_size],4
+	jmp	cvt2si_instruction
+cvtsd2si_instruction:
+	mov	[opcode_prefix],0F2h
+	mov	[mmx_size],8
+      cvt2si_instruction:
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[operand_size],0
+	cmp	ah,4
+	je	sse_reg
+	cmp	ah,8
+	jne	invalid_operand_size
+	call	operand_64bit
+	jmp	sse_reg
+
+ssse3_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],38h
+	mov	[supplemental_code],al
+	jmp	mmx_instruction
+palignr_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],3Ah
+	mov	[supplemental_code],0Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	call	make_mmx_prefix
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	palignr_mmreg_mmreg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	jmp	mmx_imm8
+      palignr_mmreg_mmreg:
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	bl,al
+	jmp	mmx_nomem_imm8
+amd3dnow_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],0Fh
+	mov	byte [value],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	cmp	ah,8
+	jne	invalid_operand_size
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	amd3dnow_mmreg_mmreg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	call	store_instruction_with_imm8
+	jmp	instruction_assembled
+      amd3dnow_mmreg_mmreg:
+	lods	byte [esi]
+	call	convert_mmx_register
+	cmp	ah,8
+	jne	invalid_operand_size
+	mov	bl,al
+	call	store_nomem_instruction
+	mov	al,byte [value]
+	stos	byte [edi]
+	jmp	instruction_assembled
+
+sse4_instruction_38_xmm0:
+	mov	[immediate_size],-1
+sse4_instruction_38:
+	mov	[mmx_size],16
+	mov	[opcode_prefix],66h
+	mov	[supplemental_code],al
+	mov	al,38h
+	jmp	sse_instruction
+sse4_ss_instruction_3a_imm8:
+	mov	[immediate_size],1
+	mov	[mmx_size],4
+	jmp	sse4_instruction_3a_setup
+sse4_sd_instruction_3a_imm8:
+	mov	[immediate_size],1
+	mov	[mmx_size],8
+	jmp	sse4_instruction_3a_setup
+sse4_instruction_3a_imm8:
+	mov	[immediate_size],1
+	mov	[mmx_size],16
+      sse4_instruction_3a_setup:
+	mov	[opcode_prefix],66h
+	mov	[supplemental_code],al
+	mov	al,3Ah
+	jmp	sse_instruction
+pclmulqdq_instruction:
+	mov	byte [value],al
+	mov	[mmx_size],16
+	mov	al,44h
+	jmp	sse4_instruction_3a_setup
+extractps_instruction:
+	mov	[opcode_prefix],66h
+	mov	[base_code],0Fh
+	mov	[extended_code],3Ah
+	mov	[supplemental_code],17h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	extractps_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],4
+	je	extractps_size_ok
+	cmp	[operand_size],0
+	jne	invalid_operand_size
+      extractps_size_ok:
+	push	edx ebx ecx
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	jmp	mmx_imm8
+      extractps_reg:
+	lods	byte [esi]
+	call	convert_register
+	push	eax
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	pop	ebx
+	mov	al,bh
+	cmp	al,4
+	je	mmx_nomem_imm8
+	cmp	al,8
+	jne	invalid_operand_size
+	call	operand_64bit
+	jmp	mmx_nomem_imm8
+insertps_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+      insertps_xmmreg:
+	mov	[opcode_prefix],66h
+	mov	[base_code],0Fh
+	mov	[extended_code],3Ah
+	mov	[supplemental_code],21h
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	insertps_xmmreg_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],4
+	je	insertps_size_ok
+	cmp	[operand_size],0
+	jne	invalid_operand_size
+      insertps_size_ok:
+	jmp	mmx_imm8
+      insertps_xmmreg_reg:
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	bl,al
+	jmp	mmx_nomem_imm8
+pextrq_instruction:
+	mov	[mmx_size],8
+	jmp	pextr_instruction
+pextrd_instruction:
+	mov	[mmx_size],4
+	jmp	pextr_instruction
+pextrw_instruction:
+	mov	[mmx_size],2
+	jmp	pextr_instruction
+pextrb_instruction:
+	mov	[mmx_size],1
+      pextr_instruction:
+	mov	[opcode_prefix],66h
+	mov	[base_code],0Fh
+	mov	[extended_code],3Ah
+	mov	[supplemental_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	pextr_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[mmx_size]
+	cmp	al,[operand_size]
+	je	pextr_size_ok
+	cmp	[operand_size],0
+	jne	invalid_operand_size
+      pextr_size_ok:
+	cmp	al,8
+	jne	pextr_prefix_ok
+	call	operand_64bit
+      pextr_prefix_ok:
+	push	edx ebx ecx
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	jmp	mmx_imm8
+      pextr_reg:
+	lods	byte [esi]
+	call	convert_register
+	cmp	[mmx_size],4
+	ja	pextrq_reg
+	cmp	ah,4
+	je	pextr_reg_size_ok
+	cmp	[code_type],64
+	jne	pextr_invalid_size
+	cmp	ah,8
+	je	pextr_reg_size_ok
+      pextr_invalid_size:
+	jmp	invalid_operand_size
+      pextrq_reg:
+	cmp	ah,8
+	jne	pextr_invalid_size
+	call	operand_64bit
+      pextr_reg_size_ok:
+	mov	[operand_size],0
+	push	eax
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	mov	ebx,eax
+	pop	eax
+	mov	[postbyte_register],al
+	mov	al,ah
+	cmp	[mmx_size],2
+	jne	pextr_reg_store
+	mov	[opcode_prefix],0
+	mov	[extended_code],0C5h
+	call	make_mmx_prefix
+	jmp	mmx_nomem_imm8
+      pextr_reg_store:
+	cmp	bh,16
+	jne	invalid_operand_size
+	xchg	bl,[postbyte_register]
+	call	operand_autodetect
+	jmp	mmx_nomem_imm8
+pinsrb_instruction:
+	mov	[mmx_size],1
+	jmp	pinsr_instruction
+pinsrd_instruction:
+	mov	[mmx_size],4
+	jmp	pinsr_instruction
+pinsrq_instruction:
+	mov	[mmx_size],8
+	call	operand_64bit
+      pinsr_instruction:
+	mov	[opcode_prefix],66h
+	mov	[base_code],0Fh
+	mov	[extended_code],3Ah
+	mov	[supplemental_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+      pinsr_xmmreg:
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	pinsr_xmmreg_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],0
+	je	mmx_imm8
+	mov	al,[mmx_size]
+	cmp	al,[operand_size]
+	je	mmx_imm8
+	jmp	invalid_operand_size
+      pinsr_xmmreg_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	cmp	[mmx_size],8
+	je	pinsrq_xmmreg_reg
+	cmp	ah,4
+	je	mmx_nomem_imm8
+	jmp	invalid_operand_size
+      pinsrq_xmmreg_reg:
+	cmp	ah,8
+	je	mmx_nomem_imm8
+	jmp	invalid_operand_size
+pmovsxbw_instruction:
+	mov	[mmx_size],8
+	jmp	pmovsx_instruction
+pmovsxbd_instruction:
+	mov	[mmx_size],4
+	jmp	pmovsx_instruction
+pmovsxbq_instruction:
+	mov	[mmx_size],2
+	jmp	pmovsx_instruction
+pmovsxwd_instruction:
+	mov	[mmx_size],8
+	jmp	pmovsx_instruction
+pmovsxwq_instruction:
+	mov	[mmx_size],4
+	jmp	pmovsx_instruction
+pmovsxdq_instruction:
+	mov	[mmx_size],8
+      pmovsx_instruction:
+	mov	[opcode_prefix],66h
+	mov	[base_code],0Fh
+	mov	[extended_code],38h
+	mov	[supplemental_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	pmovsx_xmmreg_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	cmp	[operand_size],0
+	je	instruction_ready
+	mov	al,[mmx_size]
+	cmp	al,[operand_size]
+	jne	invalid_operand_size
+	jmp	instruction_ready
+      pmovsx_xmmreg_reg:
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	bl,al
+	jmp	nomem_instruction_ready
+
+fxsave_instruction_64bit:
+	call	operand_64bit
+fxsave_instruction:
+	mov	[extended_code],0AEh
+	mov	[base_code],0Fh
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	ah,[operand_size]
+	or	ah,ah
+	jz	fxsave_size_ok
+	mov	al,[postbyte_register]
+	cmp	al,111b
+	je	clflush_size_check
+	cmp	al,10b
+	jb	invalid_operand_size
+	cmp	al,11b
+	ja	invalid_operand_size
+	cmp	ah,4
+	jne	invalid_operand_size
+	jmp	fxsave_size_ok
+      clflush_size_check:
+	cmp	ah,1
+	jne	invalid_operand_size
+      fxsave_size_ok:
+	jmp	instruction_ready
+prefetch_instruction:
+	mov	[extended_code],18h
+      prefetch_mem_8bit:
+	mov	[base_code],0Fh
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	or	ah,ah
+	jz	prefetch_size_ok
+	cmp	ah,1
+	jne	invalid_operand_size
+      prefetch_size_ok:
+	call	get_address
+	jmp	instruction_ready
+amd_prefetch_instruction:
+	mov	[extended_code],0Dh
+	jmp	prefetch_mem_8bit
+fence_instruction:
+	mov	bl,al
+	mov	ax,0AE0Fh
+	stos	word [edi]
+	mov	al,bl
+	stos	byte [edi]
+	jmp	instruction_assembled
+pause_instruction:
+	mov	ax,90F3h
+	stos	word [edi]
+	jmp	instruction_assembled
+movntq_instruction:
+	mov	[mmx_size],8
+	jmp	movnt_instruction
+movntpd_instruction:
+	mov	[opcode_prefix],66h
+movntps_instruction:
+	mov	[mmx_size],16
+      movnt_instruction:
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_mmx_register
+	cmp	ah,[mmx_size]
+	jne	invalid_operand_size
+	mov	[postbyte_register],al
+	jmp	instruction_ready
+
+movntsd_instruction:
+	mov	[opcode_prefix],0F2h
+	mov	[mmx_size],8
+	jmp	movnts_instruction
+movntss_instruction:
+	mov	[opcode_prefix],0F3h
+	mov	[mmx_size],4
+      movnts_instruction:
+	mov	[extended_code],al
+	mov	[base_code],0Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	cmp	al,[mmx_size]
+	je	movnts_size_ok
+	test	al,al
+	jnz	invalid_operand_size
+      movnts_size_ok:
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	jmp	instruction_ready
+
+movnti_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	cmp	ah,4
+	je	movnti_store
+	cmp	ah,8
+	jne	invalid_operand_size
+	call	operand_64bit
+      movnti_store:
+	mov	[postbyte_register],al
+	jmp	instruction_ready
+monitor_instruction:
+	mov	[postbyte_register],al
+	cmp	byte [esi],0
+	je	monitor_instruction_store
+	cmp	byte [esi],0Fh
+	je	monitor_instruction_store
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	cmp	ax,0400h
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	cmp	ax,0401h
+	jne	invalid_operand
+	cmp	[postbyte_register],0C8h
+	jne	monitor_instruction_store
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	cmp	ax,0402h
+	jne	invalid_operand
+      monitor_instruction_store:
+	mov	ax,010Fh
+	stos	word [edi]
+	mov	al,[postbyte_register]
+	stos	byte [edi]
+	jmp	instruction_assembled
+movntdqa_instruction:
+	mov	[opcode_prefix],66h
+	mov	[base_code],0Fh
+	mov	[extended_code],38h
+	mov	[supplemental_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	jmp	instruction_ready
+
+extrq_instruction:
+	mov	[opcode_prefix],66h
+	mov	[base_code],0Fh
+	mov	[extended_code],78h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	extrq_xmmreg_xmmreg
+	test	ah,not 1
+	jnz	invalid_operand_size
+	cmp	al,'('
+	jne	invalid_operand
+	xor	bl,bl
+	xchg	bl,[postbyte_register]
+	call	store_nomem_instruction
+	call	get_byte_value
+	stosb
+	call	append_imm8
+	jmp	instruction_assembled
+      extrq_xmmreg_xmmreg:
+	inc	[extended_code]
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	bl,al
+	jmp	nomem_instruction_ready
+insertq_instruction:
+	mov	[opcode_prefix],0F2h
+	mov	[base_code],0Fh
+	mov	[extended_code],78h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	[postbyte_register],al
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_xmm_register
+	mov	bl,al
+	cmp	byte [esi],','
+	je	insertq_with_imm
+	inc	[extended_code]
+	jmp	nomem_instruction_ready
+      insertq_with_imm:
+	call	store_nomem_instruction
+	call	append_imm8
+	call	append_imm8
+	jmp	instruction_assembled
+
+crc32_instruction:
+	mov	[opcode_prefix],0F2h
+	mov	[base_code],0Fh
+	mov	[extended_code],38h
+	mov	[supplemental_code],0F0h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	cmp	ah,8
+	je	crc32_reg64
+	cmp	ah,4
+	jne	invalid_operand
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	crc32_reg32_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	test	al,al
+	jz	crc32_unknown_size
+	cmp	al,1
+	je	crc32_reg32_mem_store
+	cmp	al,4
+	ja	invalid_operand_size
+	inc	[supplemental_code]
+	call	operand_autodetect
+      crc32_reg32_mem_store:
+	jmp	instruction_ready
+      crc32_unknown_size:
+	call	recoverable_unknown_size
+	jmp	crc32_reg32_mem_store
+      crc32_reg32_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,ah
+	cmp	al,1
+	je	crc32_reg32_reg_store
+	cmp	al,4
+	ja	invalid_operand_size
+	inc	[supplemental_code]
+	call	operand_autodetect
+      crc32_reg32_reg_store:
+	jmp	nomem_instruction_ready
+      crc32_reg64:
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	mov	[operand_size],0
+	call	operand_64bit
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	crc32_reg64_reg
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	ah,[operand_size]
+	mov	al,8
+	test	ah,ah
+	jz	crc32_unknown_size
+	cmp	ah,1
+	je	crc32_reg32_mem_store
+	cmp	ah,al
+	jne	invalid_operand_size
+	inc	[supplemental_code]
+	jmp	crc32_reg32_mem_store
+      crc32_reg64_reg:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,8
+	cmp	ah,1
+	je	crc32_reg32_reg_store
+	cmp	ah,al
+	jne	invalid_operand_size
+	inc	[supplemental_code]
+	jmp	crc32_reg32_reg_store
+popcnt_instruction:
+	mov	[opcode_prefix],0F3h
+	jmp	bs_instruction
+movbe_instruction:
+	mov	[supplemental_code],al
+	mov	[extended_code],38h
+	mov	[base_code],0Fh
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	je	movbe_mem
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_argument
+	call	get_address
+	mov	al,[operand_size]
+	call	operand_autodetect
+	jmp	instruction_ready
+      movbe_mem:
+	inc	[supplemental_code]
+	call	get_address
+	push	edx ebx ecx
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	pop	ecx ebx edx
+	mov	al,[operand_size]
+	call	operand_autodetect
+	jmp	instruction_ready
+adx_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],38h
+	mov	[supplemental_code],0F6h
+	mov	[operand_prefix],al
+	call	get_reg_mem
+	jc	adx_reg_reg
+	mov	al,[operand_size]
+	cmp	al,4
+	je	instruction_ready
+	cmp	al,8
+	jne	invalid_operand_size
+	call	operand_64bit
+	jmp	instruction_ready
+      adx_reg_reg:
+	cmp	ah,4
+	je	nomem_instruction_ready
+	cmp	ah,8
+	jne	invalid_operand_size
+	call	operand_64bit
+	jmp	nomem_instruction_ready
+
+simple_vmx_instruction:
+	mov	ah,al
+	mov	al,0Fh
+	stos	byte [edi]
+	mov	al,1
+	stos	word [edi]
+	jmp	instruction_assembled
+vmclear_instruction:
+	mov	[opcode_prefix],66h
+	jmp	vmx_instruction
+vmxon_instruction:
+	mov	[opcode_prefix],0F3h
+vmx_instruction:
+	mov	[postbyte_register],al
+	mov	[extended_code],0C7h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	or	al,al
+	jz	vmx_size_ok
+	cmp	al,8
+	jne	invalid_operand_size
+      vmx_size_ok:
+	mov	[base_code],0Fh
+	jmp	instruction_ready
+vmread_instruction:
+	mov	[extended_code],78h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	vmread_nomem
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	call	vmread_check_size
+	jmp	vmx_size_ok
+      vmread_nomem:
+	lods	byte [esi]
+	call	convert_register
+	push	eax
+	call	vmread_check_size
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	call	vmread_check_size
+	pop	ebx
+	mov	[base_code],0Fh
+	jmp	nomem_instruction_ready
+      vmread_check_size:
+	cmp	[code_type],64
+	je	vmread_long
+	cmp	[operand_size],4
+	jne	invalid_operand_size
+	ret
+      vmread_long:
+	cmp	[operand_size],8
+	jne	invalid_operand_size
+	ret
+vmwrite_instruction:
+	mov	[extended_code],79h
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	je	vmwrite_nomem
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	call	vmread_check_size
+	jmp	vmx_size_ok
+      vmwrite_nomem:
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	[base_code],0Fh
+	jmp	nomem_instruction_ready
+vmx_inv_instruction:
+	mov	[opcode_prefix],66h
+	mov	[extended_code],38h
+	mov	[supplemental_code],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	[postbyte_register],al
+	call	vmread_check_size
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,'['
+	jne	invalid_operand
+	call	get_address
+	mov	al,[operand_size]
+	or	al,al
+	jz	vmx_size_ok
+	cmp	al,16
+	jne	invalid_operand_size
+	jmp	vmx_size_ok
+simple_svm_instruction:
+	push	eax
+	mov	[base_code],0Fh
+	mov	[extended_code],1
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	or	al,al
+	jnz	invalid_operand
+      simple_svm_detect_size:
+	cmp	ah,2
+	je	simple_svm_16bit
+	cmp	ah,4
+	je	simple_svm_32bit
+	cmp	[code_type],64
+	jne	invalid_operand_size
+	jmp	simple_svm_store
+      simple_svm_16bit:
+	cmp	[code_type],16
+	je	simple_svm_store
+	cmp	[code_type],64
+	je	invalid_operand_size
+	jmp	prefixed_svm_store
+      simple_svm_32bit:
+	cmp	[code_type],32
+	je	simple_svm_store
+      prefixed_svm_store:
+	mov	al,67h
+	stos	byte [edi]
+      simple_svm_store:
+	call	store_instruction_code
+	pop	eax
+	stos	byte [edi]
+	jmp	instruction_assembled
+skinit_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	cmp	ax,0400h
+	jne	invalid_operand
+	mov	al,0DEh
+	jmp	simple_vmx_instruction
+invlpga_instruction:
+	push	eax
+	mov	[base_code],0Fh
+	mov	[extended_code],1
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	or	al,al
+	jnz	invalid_operand
+	mov	bl,ah
+	mov	[operand_size],0
+	lods	byte [esi]
+	cmp	al,','
+	jne	invalid_operand
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	cmp	ax,0401h
+	jne	invalid_operand
+	mov	ah,bl
+	jmp	simple_svm_detect_size
+
+rdrand_instruction:
+	mov	[base_code],0Fh
+	mov	[extended_code],0C7h
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,ah
+	call	operand_autodetect
+	jmp	nomem_instruction_ready
+rdfsbase_instruction:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	mov	[opcode_prefix],0F3h
+	mov	[base_code],0Fh
+	mov	[extended_code],0AEh
+	mov	[postbyte_register],al
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	al,10h
+	jne	invalid_operand
+	lods	byte [esi]
+	call	convert_register
+	mov	bl,al
+	mov	al,ah
+	cmp	ah,2
+	je	invalid_operand_size
+	call	operand_autodetect
+	jmp	nomem_instruction_ready
+
+xabort_instruction:
+	lods	byte [esi]
+	call	get_size_operator
+	cmp	ah,1
+	ja	invalid_operand_size
+	cmp	al,'('
+	jne	invalid_operand
+	call	get_byte_value
+	mov	dl,al
+	mov	ax,0F8C6h
+	stos	word [edi]
+	mov	al,dl
+	stos	byte [edi]
+	jmp	instruction_assembled
+xbegin_instruction:
+	lods	byte [esi]
+	cmp	al,'('
+	jne	invalid_operand
+	mov	al,[code_type]
+	cmp	al,64
+	je	xbegin_64bit
+	cmp	al,32
+	je	xbegin_32bit
+      xbegin_16bit:
+	call	get_address_word_value
+	add	edi,4
+	mov	ebp,[addressing_space]
+	call	calculate_relative_offset
+	sub	edi,4
+	shl	eax,16
+	mov	ax,0F8C7h
+	stos	dword [edi]
+	jmp	instruction_assembled
+      xbegin_32bit:
+	call	get_address_dword_value
+	jmp	xbegin_address_ok
+      xbegin_64bit:
+	call	get_address_qword_value
+      xbegin_address_ok:
+	add	edi,5
+	mov	ebp,[addressing_space]
+	call	calculate_relative_offset
+	sub	edi,5
+	mov	edx,eax
+	cwde
+	cmp	eax,edx
+	jne	xbegin_rel32
+	mov	al,66h
+	stos	byte [edi]
+	mov	eax,edx
+	shl	eax,16
+	mov	ax,0F8C7h
+	stos	dword [edi]
+	jmp	instruction_assembled
+      xbegin_rel32:
+	sub	edx,1
+	jno	xbegin_rel32_ok
+	cmp	[code_type],64
+	je	relative_jump_out_of_range
+      xbegin_rel32_ok:
+	mov	ax,0F8C7h
+	stos	word [edi]
+	mov	eax,edx
+	stos	dword [edi]
+	jmp	instruction_assembled
+
+convert_register:
+	mov	ah,al
+	shr	ah,4
+	and	al,0Fh
+	cmp	ah,8
+	je	match_register_size
+	cmp	ah,4
+	ja	invalid_operand
+	cmp	ah,1
+	ja	match_register_size
+	cmp	al,4
+	jb	match_register_size
+	or	ah,ah
+	jz	high_byte_register
+	or	[rex_prefix],40h
+      match_register_size:
+	cmp	ah,[operand_size]
+	je	register_size_ok
+	cmp	[operand_size],0
+	jne	operand_sizes_do_not_match
+	mov	[operand_size],ah
+      register_size_ok:
+	ret
+      high_byte_register:
+	mov	ah,1
+	or	[rex_prefix],80h
+	jmp	match_register_size
+convert_fpu_register:
+	mov	ah,al
+	shr	ah,4
+	and	al,111b
+	cmp	ah,10
+	jne	invalid_operand
+	jmp	match_register_size
+convert_mmx_register:
+	mov	ah,al
+	shr	ah,4
+	cmp	ah,0Ch
+	je	xmm_register
+	ja	invalid_operand
+	and	al,111b
+	cmp	ah,0Bh
+	jne	invalid_operand
+	mov	ah,8
+	cmp	[vex_required],0
+	jne	invalid_operand
+	jmp	match_register_size
+      xmm_register:
+	and	al,0Fh
+	mov	ah,16
+	cmp	al,8
+	jb	match_register_size
+	cmp	[code_type],64
+	jne	invalid_operand
+	jmp	match_register_size
+convert_xmm_register:
+	mov	ah,al
+	shr	ah,4
+	cmp	ah,0Ch
+	je	xmm_register
+	jmp	invalid_operand
+get_size_operator:
+	xor	ah,ah
+	cmp	al,11h
+	jne	no_size_operator
+	mov	[size_declared],1
+	lods	word [esi]
+	xchg	al,ah
+	mov	[size_override],1
+	cmp	ah,[operand_size]
+	je	size_operator_ok
+	cmp	[operand_size],0
+	jne	operand_sizes_do_not_match
+	mov	[operand_size],ah
+      size_operator_ok:
+	ret
+      no_size_operator:
+	mov	[size_declared],0
+	cmp	al,'['
+	jne	size_operator_ok
+	mov	[size_override],0
+	ret
+get_jump_operator:
+	mov	[jump_type],0
+	cmp	al,12h
+	jne	jump_operator_ok
+	lods	word [esi]
+	mov	[jump_type],al
+	mov	al,ah
+      jump_operator_ok:
+	ret
+get_address:
+	mov	[segment_register],0
+	mov	[address_size],0
+	mov	[free_address_range],0
+	mov	al,[code_type]
+	shr	al,3
+	mov	[value_size],al
+	mov	al,[esi]
+	and	al,11110000b
+	cmp	al,60h
+	jne	get_size_prefix
+	lods	byte [esi]
+	sub	al,60h
+	mov	[segment_register],al
+	mov	al,[esi]
+	and	al,11110000b
+      get_size_prefix:
+	cmp	al,70h
+	jne	address_size_prefix_ok
+	lods	byte [esi]
+	sub	al,70h
+	cmp	al,2
+	jb	invalid_address_size
+	cmp	al,8
+	ja	invalid_address_size
+	mov	[address_size],al
+	mov	[value_size],al
+      address_size_prefix_ok:
+	call	calculate_address
+	cmp	byte [esi-1],']'
+	jne	invalid_address
+	mov	[address_high],edx
+	mov	edx,eax
+	cmp	[code_type],64
+	jne	address_ok
+	or	bx,bx
+	jnz	address_ok
+	test	ch,0Fh
+	jnz	address_ok
+      calculate_relative_address:
+	mov	edx,[address_symbol]
+	mov	[symbol_identifier],edx
+	mov	edx,[address_high]
+	mov	ebp,[addressing_space]
+	call	calculate_relative_offset
+	mov	[address_high],edx
+	cdq
+	cmp	edx,[address_high]
+	je	address_high_ok
+	call	recoverable_overflow
+      address_high_ok:
+	mov	edx,eax
+	ror	ecx,16
+	mov	cl,[value_type]
+	rol	ecx,16
+	mov	bx,0FF00h
+      address_ok:
+	ret
+operand_16bit:
+	cmp	[code_type],16
+	je	size_prefix_ok
+	mov	[operand_prefix],66h
+	ret
+operand_32bit:
+	cmp	[code_type],16
+	jne	size_prefix_ok
+	mov	[operand_prefix],66h
+      size_prefix_ok:
+	ret
+operand_64bit:
+	cmp	[code_type],64
+	jne	illegal_instruction
+	or	[rex_prefix],48h
+	ret
+operand_autodetect:
+	cmp	al,2
+	je	operand_16bit
+	cmp	al,4
+	je	operand_32bit
+	cmp	al,8
+	je	operand_64bit
+	jmp	invalid_operand_size
+store_segment_prefix_if_necessary:
+	mov	al,[segment_register]
+	or	al,al
+	jz	segment_prefix_ok
+	cmp	al,4
+	ja	segment_prefix_386
+	cmp	[code_type],64
+	je	segment_prefix_ok
+	cmp	al,3
+	je	ss_prefix
+	jb	segment_prefix_86
+	cmp	bl,25h
+	je	segment_prefix_86
+	cmp	bh,25h
+	je	segment_prefix_86
+	cmp	bh,45h
+	je	segment_prefix_86
+	cmp	bh,44h
+	je	segment_prefix_86
+	ret
+      ss_prefix:
+	cmp	bl,25h
+	je	segment_prefix_ok
+	cmp	bh,25h
+	je	segment_prefix_ok
+	cmp	bh,45h
+	je	segment_prefix_ok
+	cmp	bh,44h
+	je	segment_prefix_ok
+	jmp	segment_prefix_86
+store_segment_prefix:
+	mov	al,[segment_register]
+	or	al,al
+	jz	segment_prefix_ok
+	cmp	al,5
+	jae	segment_prefix_386
+      segment_prefix_86:
+	dec	al
+	shl	al,3
+	add	al,26h
+	stos	byte [edi]
+	jmp	segment_prefix_ok
+      segment_prefix_386:
+	add	al,64h-5
+	stos	byte [edi]
+      segment_prefix_ok:
+	ret
+store_instruction_code:
+	cmp	[vex_required],0
+	jne	store_vex_instruction_code
+	mov	al,[operand_prefix]
+	or	al,al
+	jz	operand_prefix_ok
+	stos	byte [edi]
+      operand_prefix_ok:
+	mov	al,[opcode_prefix]
+	or	al,al
+	jz	opcode_prefix_ok
+	stos	byte [edi]
+      opcode_prefix_ok:
+	mov	al,[rex_prefix]
+	test	al,40h
+	jz	rex_prefix_ok
+	cmp	[code_type],64
+	jne	invalid_operand
+	test	al,0B0h
+	jnz	disallowed_combination_of_registers
+	stos	byte [edi]
+      rex_prefix_ok:
+	mov	al,[base_code]
+	stos	byte [edi]
+	cmp	al,0Fh
+	jne	instruction_code_ok
+      store_extended_code:
+	mov	al,[extended_code]
+	stos	byte [edi]
+	cmp	al,38h
+	je	store_supplemental_code
+	cmp	al,3Ah
+	je	store_supplemental_code
+      instruction_code_ok:
+	ret
+      store_supplemental_code:
+	mov	al,[supplemental_code]
+	stos	byte [edi]
+	ret
+store_nomem_instruction:
+	test	[postbyte_register],1000b
+	jz	nomem_reg_code_ok
+	or	[rex_prefix],44h
+	and	[postbyte_register],111b
+      nomem_reg_code_ok:
+	test	bl,1000b
+	jz	nomem_rm_code_ok
+	or	[rex_prefix],41h
+	and	bl,111b
+      nomem_rm_code_ok:
+	call	store_instruction_code
+	mov	al,[postbyte_register]
+	shl	al,3
+	or	al,bl
+	or	al,11000000b
+	stos	byte [edi]
+	ret
+store_instruction:
+	mov	[current_offset],edi
+	test	[postbyte_register],1000b
+	jz	reg_code_ok
+	or	[rex_prefix],44h
+	and	[postbyte_register],111b
+      reg_code_ok:
+	cmp	[code_type],64
+	jne	address_value_ok
+	xor	eax,eax
+	bt	edx,31
+	sbb	eax,[address_high]
+	jz	address_value_ok
+	cmp	[address_high],0
+	jne	address_value_out_of_range
+	test	ch,44h
+	jnz	address_value_ok
+	test	bx,8080h
+	jz	address_value_ok
+      address_value_out_of_range:
+	call	recoverable_overflow
+      address_value_ok:
+	call	store_segment_prefix_if_necessary
+	test	[vex_required],4
+	jnz	address_vsib
+	or	bx,bx
+	jz	address_immediate
+	cmp	bx,0F800h
+	je	address_rip_based
+	cmp	bx,0F400h
+	je	address_eip_based
+	cmp	bx,0FF00h
+	je	address_relative
+	mov	al,bl
+	or	al,bh
+	and	al,11110000b
+	cmp	al,80h
+	je	postbyte_64bit
+	cmp	al,40h
+	je	postbyte_32bit
+	cmp	al,20h
+	jne	invalid_address
+	cmp	[code_type],64
+	je	invalid_address_size
+	call	address_16bit_prefix
+	call	store_instruction_code
+	cmp	bl,bh
+	jbe	determine_16bit_address
+	xchg	bl,bh
+      determine_16bit_address:
+	cmp	bx,2600h
+	je	address_si
+	cmp	bx,2700h
+	je	address_di
+	cmp	bx,2300h
+	je	address_bx
+	cmp	bx,2500h
+	je	address_bp
+	cmp	bx,2625h
+	je	address_bp_si
+	cmp	bx,2725h
+	je	address_bp_di
+	cmp	bx,2723h
+	je	address_bx_di
+	cmp	bx,2623h
+	jne	invalid_address
+      address_bx_si:
+	xor	al,al
+	jmp	postbyte_16bit
+      address_bx_di:
+	mov	al,1
+	jmp	postbyte_16bit
+      address_bp_si:
+	mov	al,10b
+	jmp	postbyte_16bit
+      address_bp_di:
+	mov	al,11b
+	jmp	postbyte_16bit
+      address_si:
+	mov	al,100b
+	jmp	postbyte_16bit
+      address_di:
+	mov	al,101b
+	jmp	postbyte_16bit
+      address_bx:
+	mov	al,111b
+	jmp	postbyte_16bit
+      address_bp:
+	mov	al,110b
+      postbyte_16bit:
+	test	ch,22h
+	jnz	address_16bit_value
+	or	ch,ch
+	jnz	address_sizes_do_not_agree
+	cmp	edx,10000h
+	jge	value_out_of_range
+	cmp	edx,-8000h
+	jl	value_out_of_range
+	or	dx,dx
+	jz	address
+	cmp	dx,80h
+	jb	address_8bit_value
+	cmp	dx,-80h
+	jae	address_8bit_value
+      address_16bit_value:
+	or	al,10000000b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	byte [edi]
+	mov	eax,edx
+	stos	word [edi]
+	ret
+      address_8bit_value:
+	or	al,01000000b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	byte [edi]
+	mov	al,dl
+	stos	byte [edi]
+	cmp	dx,80h
+	jge	value_out_of_range
+	cmp	dx,-80h
+	jl	value_out_of_range
+	ret
+      address:
+	cmp	al,110b
+	je	address_8bit_value
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	byte [edi]
+	ret
+      address_vsib:
+	mov	al,bl
+	shr	al,4
+	cmp	al,0Ch
+	je	vector_index_ok
+	cmp	al,0Dh
+	jne	invalid_address
+      vector_index_ok:
+	mov	al,bh
+	shr	al,4
+	cmp	al,4
+	je	postbyte_32bit
+	cmp	[code_type],64
+	je	address_prefix_ok
+	test	al,al
+	jnz	invalid_address
+      postbyte_32bit:
+	call	address_32bit_prefix
+	jmp	address_prefix_ok
+      postbyte_64bit:
+	cmp	[code_type],64
+	jne	invalid_address_size
+      address_prefix_ok:
+	cmp	bl,44h
+	je	invalid_address
+	cmp	bl,84h
+	je	invalid_address
+	test	bh,1000b
+	jz	base_code_ok
+	or	[rex_prefix],41h
+      base_code_ok:
+	test	bl,1000b
+	jz	index_code_ok
+	or	[rex_prefix],42h
+      index_code_ok:
+	call	store_instruction_code
+	or	cl,cl
+	jz	only_base_register
+      base_and_index:
+	mov	al,100b
+	xor	ah,ah
+	cmp	cl,1
+	je	scale_ok
+	cmp	cl,2
+	je	scale_1
+	cmp	cl,4
+	je	scale_2
+	or	ah,11000000b
+	jmp	scale_ok
+      scale_2:
+	or	ah,10000000b
+	jmp	scale_ok
+      scale_1:
+	or	ah,01000000b
+      scale_ok:
+	or	bh,bh
+	jz	only_index_register
+	and	bl,111b
+	shl	bl,3
+	or	ah,bl
+	and	bh,111b
+	or	ah,bh
+      sib_ready:
+	test	ch,44h
+	jnz	sib_address_32bit_value
+	test	ch,88h
+	jnz	sib_address_32bit_value
+	or	ch,ch
+	jnz	address_sizes_do_not_agree
+	cmp	bh,5
+	je	address_value
+	or	edx,edx
+	jz	sib_address
+      address_value:
+	cmp	edx,80h
+	jb	sib_address_8bit_value
+	cmp	edx,-80h
+	jae	sib_address_8bit_value
+      sib_address_32bit_value:
+	or	al,10000000b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	word [edi]
+	jmp	store_address_32bit_value
+      sib_address_8bit_value:
+	or	al,01000000b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	word [edi]
+	mov	al,dl
+	stos	byte [edi]
+	cmp	edx,80h
+	jge	value_out_of_range
+	cmp	edx,-80h
+	jl	value_out_of_range
+	ret
+      sib_address:
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	word [edi]
+	ret
+      only_index_register:
+	or	ah,101b
+	and	bl,111b
+	shl	bl,3
+	or	ah,bl
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	word [edi]
+	test	ch,44h
+	jnz	store_address_32bit_value
+	test	ch,88h
+	jnz	store_address_32bit_value
+	or	ch,ch
+	jnz	invalid_address_size
+	jmp	store_address_32bit_value
+      zero_index_register:
+	mov	bl,4
+	mov	cl,1
+	jmp	base_and_index
+      only_base_register:
+	mov	al,bh
+	and	al,111b
+	cmp	al,4
+	je	zero_index_register
+	test	ch,44h
+	jnz	simple_address_32bit_value
+	test	ch,88h
+	jnz	simple_address_32bit_value
+	or	ch,ch
+	jnz	address_sizes_do_not_agree
+	or	edx,edx
+	jz	simple_address
+	cmp	edx,80h
+	jb	simple_address_8bit_value
+	cmp	edx,-80h
+	jae	simple_address_8bit_value
+      simple_address_32bit_value:
+	or	al,10000000b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	byte [edi]
+	jmp	store_address_32bit_value
+      simple_address_8bit_value:
+	or	al,01000000b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	byte [edi]
+	mov	al,dl
+	stos	byte [edi]
+	cmp	edx,80h
+	jge	value_out_of_range
+	cmp	edx,-80h
+	jl	value_out_of_range
+	ret
+      simple_address:
+	cmp	al,5
+	je	simple_address_8bit_value
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	byte [edi]
+	ret
+      address_immediate:
+	cmp	[code_type],64
+	je	address_immediate_sib
+	test	ch,44h
+	jnz	address_immediate_32bit
+	test	ch,88h
+	jnz	address_immediate_32bit
+	test	ch,22h
+	jnz	address_immediate_16bit
+	or	ch,ch
+	jnz	invalid_address_size
+	cmp	[code_type],16
+	je	addressing_16bit
+      address_immediate_32bit:
+	call	address_32bit_prefix
+	call	store_instruction_code
+      store_immediate_address:
+	mov	al,101b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	byte [edi]
+      store_address_32bit_value:
+	test	ch,0F0h
+	jz	address_32bit_relocation_ok
+	mov	eax,ecx
+	shr	eax,16
+	cmp	al,4
+	jne	address_32bit_relocation
+	mov	al,2
+      address_32bit_relocation:
+	xchg	[value_type],al
+	mov	ebx,[address_symbol]
+	xchg	ebx,[symbol_identifier]
+	call	mark_relocation
+	mov	[value_type],al
+	mov	[symbol_identifier],ebx
+      address_32bit_relocation_ok:
+	mov	eax,edx
+	stos	dword [edi]
+	ret
+      store_address_64bit_value:
+	test	ch,0F0h
+	jz	address_64bit_relocation_ok
+	mov	eax,ecx
+	shr	eax,16
+	xchg	[value_type],al
+	mov	ebx,[address_symbol]
+	xchg	ebx,[symbol_identifier]
+	call	mark_relocation
+	mov	[value_type],al
+	mov	[symbol_identifier],ebx
+      address_64bit_relocation_ok:
+	mov	eax,edx
+	stos	dword [edi]
+	mov	eax,[address_high]
+	stos	dword [edi]
+	ret
+      address_immediate_sib:
+	test	ch,44h
+	jnz	address_immediate_sib_32bit
+	test	ch,not 88h
+	jnz	invalid_address_size
+      address_immediate_sib_store:
+	call	store_instruction_code
+	mov	al,100b
+	mov	ah,100101b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	word [edi]
+	jmp	store_address_32bit_value
+      address_immediate_sib_32bit:
+	test	ecx,0FF0000h
+	jnz	address_immediate_sib_nosignextend
+	test	edx,80000000h
+	jz	address_immediate_sib_store
+      address_immediate_sib_nosignextend:
+	call	address_32bit_prefix
+	jmp	address_immediate_sib_store
+      address_eip_based:
+	mov	al,67h
+	stos	byte [edi]
+      address_rip_based:
+	cmp	[code_type],64
+	jne	invalid_address
+	call	store_instruction_code
+	jmp	store_immediate_address
+      address_relative:
+	call	store_instruction_code
+	movzx	eax,[immediate_size]
+	add	eax,edi
+	sub	eax,[current_offset]
+	add	eax,5
+	sub	edx,eax
+	jo	value_out_of_range
+	mov	al,101b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	byte [edi]
+	shr	ecx,16
+	xchg	[value_type],cl
+	mov	ebx,[address_symbol]
+	xchg	ebx,[symbol_identifier]
+	mov	eax,edx
+	call	mark_relocation
+	mov	[value_type],cl
+	mov	[symbol_identifier],ebx
+	stos	dword [edi]
+	ret
+      addressing_16bit:
+	cmp	edx,10000h
+	jge	address_immediate_32bit
+	cmp	edx,-8000h
+	jl	address_immediate_32bit
+	movzx	edx,dx
+      address_immediate_16bit:
+	call	address_16bit_prefix
+	call	store_instruction_code
+	mov	al,110b
+	mov	cl,[postbyte_register]
+	shl	cl,3
+	or	al,cl
+	stos	byte [edi]
+	mov	eax,edx
+	stos	word [edi]
+	cmp	edx,10000h
+	jge	value_out_of_range
+	cmp	edx,-8000h
+	jl	value_out_of_range
+	ret
+      address_16bit_prefix:
+	cmp	[code_type],16
+	je	instruction_prefix_ok
+	mov	al,67h
+	stos	byte [edi]
+	ret
+      address_32bit_prefix:
+	cmp	[code_type],32
+	je	instruction_prefix_ok
+	mov	al,67h
+	stos	byte [edi]
+      instruction_prefix_ok:
+	ret
+store_instruction_with_imm8:
+	mov	[immediate_size],1
+	call	store_instruction
+	mov	al,byte [value]
+	stos	byte [edi]
+	ret
+store_instruction_with_imm16:
+	mov	[immediate_size],2
+	call	store_instruction
+	mov	ax,word [value]
+	call	mark_relocation
+	stos	word [edi]
+	ret
+store_instruction_with_imm32:
+	mov	[immediate_size],4
+	call	store_instruction
+	mov	eax,dword [value]
+	call	mark_relocation
+	stos	dword [edi]
+	ret
diff --git a/samples/C#/Index.cshtml b/samples/C#/Index.cshtml
new file mode 100644
index 00000000..f7aa29c6
--- /dev/null
+++ b/samples/C#/Index.cshtml
@@ -0,0 +1,45 @@
+@{
+    ViewBag.Title = "Home Page";
+}
+@section featured {
+    <section class="featured">
+        <div class="content-wrapper">
+            <hgroup class="title">
+                <h1>@ViewBag.Title.</h1>
+                <h2>@ViewBag.Message</h2>
+            </hgroup>
+            <p>
+                To learn more about ASP.NET MVC visit
+                <a href="http://asp.net/mvc" title="ASP.NET MVC Website">http://asp.net/mvc</a>.
+                The page features <mark>videos, tutorials, and samples</mark> to help you get the most from ASP.NET MVC.
+                If you have any questions about ASP.NET MVC visit
+                <a href="http://forums.asp.net/1146.aspx/1?MVC" title="ASP.NET MVC Forum">our forums</a>.
+            </p>
+        </div>
+    </section>
+}
+<h3>We suggest the following:</h3>
+<ol class="round">
+    <li class="one">
+        <h5>Getting Started</h5>
+        ASP.NET MVC gives you a powerful, patterns-based way to build dynamic websites that
+        enables a clean separation of concerns and that gives you full control over markup
+        for enjoyable, agile development. ASP.NET MVC includes many features that enable
+        fast, TDD-friendly development for creating sophisticated applications that use
+        the latest web standards.
+        <a href="http://go.microsoft.com/fwlink/?LinkId=245151">Learn more…</a>
+    </li>
+
+    <li class="two">
+        <h5>Add NuGet packages and jump-start your coding</h5>
+        NuGet makes it easy to install and update free libraries and tools.
+        <a href="http://go.microsoft.com/fwlink/?LinkId=245153">Learn more…</a>
+    </li>
+
+    <li class="three">
+        <h5>Find Web Hosting</h5>
+        You can easily find a web hosting company that offers the right mix of features
+        and price for your applications.
+        <a href="http://go.microsoft.com/fwlink/?LinkId=245157">Learn more…</a>
+    </li>
+</ol>
diff --git a/samples/C#/Program.cs b/samples/C#/Program.cs
new file mode 100644
index 00000000..20e24850
--- /dev/null
+++ b/samples/C#/Program.cs
@@ -0,0 +1,21 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace LittleSampleApp
+{
+  /// <summary>
+  /// Just what it says on the tin. A little sample application for Linguist to try out.
+  /// 
+  /// </summary>
+  class Program
+  {
+    static void Main(string[] args)
+    {
+      Console.WriteLine("Hello, I am a little sample application to test GitHub's Linguist module.");
+      Console.WriteLine("I also include a Razor MVC file just to prove it handles cshtml files now.");
+    }
+  }
+}
diff --git a/samples/C++/CsvStreamer.h b/samples/C++/CsvStreamer.h
new file mode 100644
index 00000000..b15e648d
--- /dev/null
+++ b/samples/C++/CsvStreamer.h
@@ -0,0 +1,42 @@
+#pragma once
+#include <string>
+#include <vector>
+#include <fstream>
+#include "util.h"
+
+using namespace std;
+
+
+#define DEFAULT_DELIMITER	','
+
+
+class CsvStreamer
+{
+	private:
+		ofstream file;				// File output stream
+		vector<string> row_buffer;	// Buffer which stores a row's data before being flushed/written
+		int fields;					// Number of fields (columns)
+		long rows;					// Number of rows (records) including header row
+		char delimiter;				// Delimiter character; comma by default
+		string sanitize(string);	// Returns a string ready for output into the file
+		
+	public:
+		CsvStreamer();				// Empty CSV streamer... be sure to open the file before writing!
+		CsvStreamer(string, char);	// Same as open(string, char)...
+		CsvStreamer(string);		// Opens an output CSV file given a file path/name
+		~CsvStreamer();				// Ensures the output file is closed and saved
+		void open(string);			// Opens an output CSV file given a file path/name (default delimiter)
+		void open(string, char);	// Opens an output CSV file given a file path/name and a delimiting character (default comma)
+		void add_field(string);		// If still on first line, adds a new field to the header row
+		void save_fields();			// Call this to save the header row; all new writes should be through append()
+		void append(string);		// Appends the current row with this data for the next field; quoted only if needed (leading/trailing spaces are trimmed)
+		void append(string, bool);	// Like append(string) but can specify whether to trim spaces at either end of the data (false to keep spaces)
+		void append(float);			// Appends the current row with this number
+		void append(double);		// Appends the current row with this number
+		void append(long);			// Appends the current row with this number
+		void append(int);			// Appends the current row with this number
+		void writeln();				// Flushes what was in the row buffer into the file (writes the row)
+		void close();				// Saves and closes the file
+		int field_count();			// Gets the number of fields (columns)
+		long row_count();			// Gets the number of records (rows) -- NOT including the header row
+};
diff --git a/samples/C++/Field.h b/samples/C++/Field.h
new file mode 100644
index 00000000..201be118
--- /dev/null
+++ b/samples/C++/Field.h
@@ -0,0 +1,32 @@
+/*****************************************************************************
+* Dwarf Mine - The 13-11 Benchmark
+*
+* Copyright (c) 2013 Bünger, Thomas; Kieschnick, Christian; Kusber,
+* Michael; Lohse, Henning; Wuttke, Nikolai; Xylander, Oliver; Yao, Gary;
+* Zimmermann, Florian
+*
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to deal in the Software without restriction, including
+* without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to
+* permit persons to whom the Software is furnished to do so, subject to
+* the following conditions:
+*
+* The above copyright notice and this permission notice shall be
+* included in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*****************************************************************************/
+
+#pragma once
+
+enum Field { Free, Black, White, Illegal };
+
+typedef Field Player;
diff --git a/samples/C++/Math.inl b/samples/C++/Math.inl
new file mode 100644
index 00000000..194370a3
--- /dev/null
+++ b/samples/C++/Math.inl
@@ -0,0 +1,530 @@
+/*
+===========================================================================
+The Open Game Libraries.
+Copyright (C) 2007-2010 Lusito Software
+
+Author:  Santo Pfingsten (TTK-Bandit)
+Purpose: Math namespace
+-----------------------------------------
+
+This software is provided 'as-is', without any express or implied
+warranty. In no event will the authors be held liable for any damages
+arising from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose,
+including commercial applications, and to alter it and redistribute it
+freely, subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not
+   claim that you wrote the original software. If you use this software
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original software.
+
+3. This notice may not be removed or altered from any source distribution.
+===========================================================================
+*/
+
+#ifndef __OG_MATH_INL__
+#define __OG_MATH_INL__
+
+namespace og {
+
+/*
+==============================================================================
+
+  Math
+
+==============================================================================
+*/
+
+/*
+================
+Math::Abs
+================
+*/
+OG_INLINE int Math::Abs( int i ) {
+#if 1
+	if ( i & 0x80000000 )
+		return 0x80000000 - (i & MASK_SIGNED);
+	return i;
+#else
+   int y = x >> 31;
+   return ( ( x ^ y ) - y );
+#endif
+}
+
+/*
+================
+Math::Fabs
+================
+*/
+OG_INLINE float Math::Fabs( float f ) {
+#if 1
+	uInt *pf = reinterpret_cast<uInt*>(&f);
+	*(pf) &= MASK_SIGNED;
+	return f;
+#else
+	return fabsf( f );
+#endif
+}
+
+/*
+================
+Math::Round
+================
+*/
+OG_INLINE float Math::Round( float f ) {
+	return floorf( f + 0.5f );
+}
+
+/*
+================
+Math::Floor
+================
+*/
+OG_INLINE float Math::Floor( float f ) {
+	return floorf( f );
+}
+
+/*
+================
+Math::Ceil
+================
+*/
+OG_INLINE float Math::Ceil( float f ) {
+	return ceilf( f );
+}
+
+/*
+================
+Math::Ftoi
+
+ok since this is SSE, why should the other ftoi be the faster one ?
+and: we might need to add a check for SSE extensions..
+because sse isn't *really* faster (I actually read that GCC does not handle
+SSE extensions perfectly. I'll find the link and send it to you when you're online)
+================
+*/
+OG_INLINE int Math::Ftoi( float f ) {
+	//! @todo	needs testing
+	// note: sse function cvttss2si
+#if OG_ASM_MSVC
+	int i;
+#if defined(OG_FTOI_USE_SSE)
+	if( SysInfo::cpu.general.SSE ) {
+		__asm cvttss2si	eax, f
+		__asm mov		i, eax
+		return i;
+	} else
+#endif
+	{
+		__asm fld		f
+		__asm fistp		i
+		//__asm mov eax, i // do we need this ? O_o
+	}
+	return i;
+#elif OG_ASM_GNU
+	int i;
+#if defined(OG_FTOI_USE_SSE)
+	if( SysInfo::cpu.general.SSE ) {
+		__asm__ __volatile__( "cvttss2si %1    \n\t"
+			: "=m" (i)
+			: "m" (f)
+		);
+	} else
+#endif
+	{
+		__asm__ __volatile__( "flds %1    \n\t"
+							  "fistpl %0  \n\t"
+			: "=m" (i)
+			: "m" (f)
+		);
+	}
+	return i;
+#else
+	// we use c++ cast instead of c cast (not sure why id did that)
+	return static_cast<int>(f);
+#endif
+}
+
+/*
+================
+Math::FtoiFast
+================
+*/
+OG_INLINE int Math::FtoiFast( float f ) {
+#if OG_ASM_MSVC
+	int i;
+	__asm fld		f
+	__asm fistp		i
+	//__asm mov eax, i // do we need this ? O_o
+	return i;
+#elif OG_ASM_GNU
+	int i;
+	__asm__ __volatile__( "flds %1    \n\t"
+						  "fistpl %0  \n\t"
+		: "=m" (i)
+		: "m" (f)
+	);
+	return i;
+#else
+	// we use c++ cast instead of c cast (not sure why id did that)
+	return static_cast<int>(f);
+#endif
+}
+
+/*
+================
+Math::Ftol
+================
+*/
+OG_INLINE long Math::Ftol( float f ) {
+#if OG_ASM_MSVC
+	long i;
+	__asm fld		f
+	__asm fistp		i
+	//__asm mov eax, i // do we need this ? O_o
+	return i;
+#elif OG_ASM_GNU
+	long i;
+	__asm__ __volatile__( "flds %1    \n\t"
+						  "fistpl %0  \n\t"
+		: "=m" (i)
+		: "m" (f)
+	);
+	return i;
+#else
+	// we use c++ cast instead of c cast (not sure why id did that)
+	return static_cast<long>(f);
+#endif
+}
+
+/*
+================
+Math::Sign
+================
+*/
+OG_INLINE float Math::Sign( float f )	{
+	if ( f > 0.0f )
+		return 1.0f;
+	if ( f < 0.0f )
+		return -1.0f;
+	return 0.0f;
+}
+
+/*
+================
+Math::Fmod
+================
+*/
+OG_INLINE float Math::Fmod( float numerator, float denominator ) {
+	return fmodf( numerator, denominator );
+}
+
+/*
+================
+Math::Modf
+================
+*/
+OG_INLINE float Math::Modf( float f, float& i ) {
+	return modff( f, &i );
+}
+OG_INLINE float Math::Modf( float f ) {
+	float i;
+	return modff( f, &i );
+}
+
+/*
+================
+Math::Sqrt
+================
+*/
+OG_INLINE float Math::Sqrt( float f ) {
+	return sqrtf( f );
+}
+
+/*
+================
+Math::InvSqrt
+
+Cannot be 0.0f
+================
+*/
+OG_INLINE float Math::InvSqrt( float f ) {
+	OG_ASSERT( f != 0.0f );
+	return 1.0f / sqrtf( f );
+}
+
+/*
+================
+Math::RSqrt
+
+Can be 0.0f
+================
+*/
+OG_INLINE float Math::RSqrt( float f ) {
+	float g = 0.5f * f;
+	int i = *reinterpret_cast<int *>(&f);
+
+	// do a guess
+	i = 0x5f375a86 - ( i>>1 );
+	f = *reinterpret_cast<float *>(&i);
+
+	// Newtons calculation
+	f = f * ( 1.5f - g * f * f );
+	return f;
+}
+
+/*
+================
+Math::Log/Log2/Log10
+
+Log of 0 is bad.
+I've also heard you're not really
+supposed to do log of negatives, yet
+they work fine.
+================
+*/
+OG_INLINE float Math::Log( float f ) {
+	OG_ASSERT( f != 0.0f );
+	return logf( f );
+}
+OG_INLINE float Math::Log2( float f ) {
+	OG_ASSERT( f != 0.0f );
+	return INV_LN_2 * logf( f );
+}
+OG_INLINE float Math::Log10( float f ) {
+	OG_ASSERT( f != 0.0f );
+	return INV_LN_10 * logf( f );
+}
+
+/*
+================
+Math::Pow
+================
+*/
+OG_INLINE float Math::Pow( float base, float exp ) {
+	return powf( base, exp );
+}
+
+/*
+================
+Math::Exp
+================
+*/
+OG_INLINE float Math::Exp( float f ) {
+	return expf( f );
+}
+
+/*
+================
+Math::IsPowerOfTwo
+================
+*/
+OG_INLINE bool Math::IsPowerOfTwo( int x ) {
+	// This is the faster of the two known methods
+	// with the x > 0 check moved to the beginning
+	return x > 0 && ( x & ( x - 1 ) ) == 0;
+}
+
+/*
+================
+Math::HigherPowerOfTwo
+================
+*/
+OG_INLINE int Math::HigherPowerOfTwo( int x ) {
+	x--;
+	x |= x >> 1;
+	x |= x >> 2;
+	x |= x >> 4;
+	x |= x >> 8;
+	x |= x >> 16;
+	return x + 1;
+}
+
+/*
+================
+Math::LowerPowerOfTwo
+================
+*/
+OG_INLINE int Math::LowerPowerOfTwo( int x ) {
+	return HigherPowerOfTwo( x ) >> 1;
+}
+
+/*
+================
+Math::FloorPowerOfTwo
+================
+*/
+OG_INLINE int Math::FloorPowerOfTwo( int x ) {
+	return IsPowerOfTwo( x ) ? x : LowerPowerOfTwo( x );
+}
+
+/*
+================
+Math::CeilPowerOfTwo
+================
+*/
+OG_INLINE int Math::CeilPowerOfTwo( int x ) {
+	return IsPowerOfTwo( x ) ? x : HigherPowerOfTwo( x );
+}
+
+/*
+================
+Math::ClosestPowerOfTwo
+================
+*/
+OG_INLINE int Math::ClosestPowerOfTwo( int x ) {
+	if ( IsPowerOfTwo( x ) )
+		return x;
+	int high = HigherPowerOfTwo( x );
+	int low = high >> 1;
+	return ((high-x) < (x-low)) ? high : low;
+}
+
+/*
+================
+Math::Digits
+================
+*/
+OG_INLINE int Math::Digits( int x ) {
+	int digits = 1;
+	int step = 10;
+	while (step <= x) {
+		digits++;
+		step *= 10;
+	}
+	return digits;
+}
+
+/*
+================
+Math::Sin/ASin
+================
+*/
+OG_INLINE float Math::Sin( float f ) {
+	return sinf( f );
+}
+OG_INLINE float Math::ASin( float f ) {
+	if ( f <= -1.0f )
+		return -HALF_PI;
+	if ( f >= 1.0f )
+		return HALF_PI;
+	return asinf( f );
+}
+
+/*
+================
+Math::Cos/ACos
+================
+*/
+OG_INLINE float Math::Cos( float f ) {
+	return cosf( f );
+}
+OG_INLINE float Math::ACos( float f ) {
+	if ( f <= -1.0f )
+		return PI;
+	if ( f >= 1.0f )
+		return 0.0f;
+	return acosf( f );
+}
+
+/*
+================
+Math::Tan/ATan
+================
+*/
+OG_INLINE float Math::Tan( float f ) {
+	return tanf( f );
+}
+OG_INLINE float Math::ATan( float f ) {
+	return atanf( f );
+}
+OG_INLINE float Math::ATan( float f1, float f2 ) {
+	return atan2f( f1, f2 );
+}
+
+/*
+================
+Math::SinCos
+================
+*/
+OG_INLINE void Math::SinCos( float f, float &s, float &c ) {
+#if OG_ASM_MSVC
+	// sometimes assembler is just waaayy faster
+	_asm {
+		fld		f
+		fsincos
+		mov		ecx, c
+		mov		edx, s
+		fstp	dword ptr [ecx]
+		fstp	dword ptr [edx]
+	}
+#elif OG_ASM_GNU
+	asm ("fsincos" : "=t" (c), "=u" (s) : "0" (f));
+#else
+	s = Sin(f);
+	c = Sqrt( 1.0f - s * s ); // faster than calling Cos(f)
+#endif
+}
+
+/*
+================
+Math::Deg2Rad
+================
+*/
+OG_INLINE float Math::Deg2Rad( float f ) {
+	return f * DEG_TO_RAD;
+}
+
+/*
+================
+Math::Rad2Deg
+================
+*/
+OG_INLINE float Math::Rad2Deg( float f ) {
+	return f * RAD_TO_DEG;
+}
+
+/*
+================
+Math::Square
+================
+*/
+OG_INLINE float Math::Square( float v ) {
+	return v * v;
+}
+
+/*
+================
+Math::Cube
+================
+*/
+OG_INLINE float Math::Cube( float v ) {
+	return v * v * v;
+}
+
+/*
+================
+Math::Sec2Ms
+================
+*/
+OG_INLINE int Math::Sec2Ms( int sec ) {
+	return sec * 1000;
+}
+
+/*
+================
+Math::Ms2Sec
+================
+*/
+OG_INLINE int Math::Ms2Sec( int ms ) {
+	return FtoiFast( ms * 0.001f );
+}
+
+}
+
+#endif
diff --git a/samples/C++/Types.h b/samples/C++/Types.h
new file mode 100644
index 00000000..e2675538
--- /dev/null
+++ b/samples/C++/Types.h
@@ -0,0 +1,32 @@
+/*****************************************************************************
+* Dwarf Mine - The 13-11 Benchmark
+*
+* Copyright (c) 2013 Bünger, Thomas; Kieschnick, Christian; Kusber,
+* Michael; Lohse, Henning; Wuttke, Nikolai; Xylander, Oliver; Yao, Gary;
+* Zimmermann, Florian
+*
+* Permission is hereby granted, free of charge, to any person obtaining
+* a copy of this software and associated documentation files (the
+* "Software"), to deal in the Software without restriction, including
+* without limitation the rights to use, copy, modify, merge, publish,
+* distribute, sublicense, and/or sell copies of the Software, and to
+* permit persons to whom the Software is furnished to do so, subject to
+* the following conditions:
+*
+* The above copyright notice and this permission notice shall be
+* included in all copies or substantial portions of the Software.
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+*****************************************************************************/
+
+#pragma once
+
+#include <cstdint>
+
+typedef uint32_t smallPrime_t;
diff --git a/samples/C++/bcm2835.h b/samples/C++/bcm2835.h
new file mode 100644
index 00000000..e5330933
--- /dev/null
+++ b/samples/C++/bcm2835.h
@@ -0,0 +1,1129 @@
+// bcm2835.h
+//
+// C and C++ support for Broadcom BCM 2835 as used in Raspberry Pi
+//
+// Author: Mike McCauley
+// Copyright (C) 2011-2013 Mike McCauley
+// $Id: bcm2835.h,v 1.8 2013/02/15 22:06:09 mikem Exp mikem $
+//
+/// \mainpage C library for Broadcom BCM 2835 as used in Raspberry Pi
+///
+/// This is a C library for Raspberry Pi (RPi). It provides access to 
+/// GPIO and other IO functions on the Broadcom BCM 2835 chip,
+/// allowing access to the GPIO pins on the
+/// 26 pin IDE plug on the RPi board so you can control and interface with various external devices.
+///
+/// It provides functions for reading digital inputs and setting digital outputs, using SPI and I2C,
+/// and for accessing the system timers.
+/// Pin event detection is supported by polling (interrupts are not supported).
+///
+/// It is C++ compatible, and installs as a header file and non-shared library on 
+/// any Linux-based distro (but clearly is no use except on Raspberry Pi or another board with 
+/// BCM 2835).
+///
+/// The version of the package that this documentation refers to can be downloaded 
+/// from http://www.airspayce.com/mikem/bcm2835/bcm2835-1.26.tar.gz
+/// You can find the latest version at http://www.airspayce.com/mikem/bcm2835
+///
+/// Several example programs are provided.
+///
+/// Based on data in http://elinux.org/RPi_Low-level_peripherals and 
+/// http://www.raspberrypi.org/wp-content/uploads/2012/02/BCM2835-ARM-Peripherals.pdf
+/// and http://www.scribd.com/doc/101830961/GPIO-Pads-Control2
+///
+/// You can also find online help and discussion at http://groups.google.com/group/bcm2835
+/// Please use that group for all questions and discussions on this topic. 
+/// Do not contact the author directly, unless it is to discuss commercial licensing.
+///
+/// Tested on debian6-19-04-2012, 2012-07-15-wheezy-raspbian and Occidentalisv01
+/// CAUTION: it has been observed that when detect enables such as bcm2835_gpio_len() 
+/// are used and the pin is pulled LOW
+/// it can cause temporary hangs on 2012-07-15-wheezy-raspbian and Occidentalisv01.
+/// Reason for this is not yet determined, but suspect that an interrupt handler is
+/// hitting a hard loop on those OSs.
+/// If you must use bcm2835_gpio_len() and friends, make sure you disable the pins with 
+/// bcm2835_gpio_cler_len() and friends after use. 
+///
+/// \par Installation
+///
+/// This library consists of a single non-shared library and header file, which will be
+/// installed in the usual places by make install
+///
+/// \code
+/// # download the latest version of the library, say bcm2835-1.xx.tar.gz, then:
+/// tar zxvf bcm2835-1.xx.tar.gz
+/// cd bcm2835-1.xx
+/// ./configure
+/// make
+/// sudo make check
+/// sudo make install
+/// \endcode
+///
+/// \par Physical Addresses
+///
+/// The functions bcm2835_peri_read(), bcm2835_peri_write() and bcm2835_peri_set_bits() 
+/// are low level peripheral register access functions. They are designed to use
+/// physical addresses as described in section 1.2.3 ARM physical addresses
+/// of the BCM2835 ARM Peripherals manual. 
+/// Physical addresses range from 0x20000000 to 0x20FFFFFF for peripherals. The bus
+/// addresses for peripherals are set up to map onto the peripheral bus address range starting at
+/// 0x7E000000. Thus a peripheral advertised in the manual at bus address 0x7Ennnnnn is available at
+/// physical address 0x20nnnnnn.
+///
+/// The base address of the various peripheral registers are available with the following
+/// externals:
+/// bcm2835_gpio
+/// bcm2835_pwm
+/// bcm2835_clk
+/// bcm2835_pads
+/// bcm2835_spio0
+/// bcm2835_st
+/// bcm2835_bsc0
+/// bcm2835_bsc1
+///
+/// \par Pin Numbering
+///
+/// The GPIO pin numbering as used by RPi is different to and inconsistent with the underlying 
+/// BCM 2835 chip pin numbering. http://elinux.org/RPi_BCM2835_GPIOs
+/// 
+/// RPi has a 26 pin IDE header that provides access to some of the GPIO pins on the BCM 2835,
+/// as well as power and ground pins. Not all GPIO pins on the BCM 2835 are available on the 
+/// IDE header.
+///
+/// RPi Version 2 also has a P5 connector with 4 GPIO pins, 5V, 3.3V and Gnd.
+///
+/// The functions in this library are designed to be passed the BCM 2835 GPIO pin number and _not_ 
+/// the RPi pin number. There are symbolic definitions for each of the available pins
+/// that you should use for convenience. See \ref RPiGPIOPin.
+///
+/// \par SPI Pins
+/// 
+/// The bcm2835_spi_* functions allow you to control the BCM 2835 SPI0 interface, 
+/// allowing you to send and received data by SPI (Serial Peripheral Interface).
+/// For more information about SPI, see http://en.wikipedia.org/wiki/Serial_Peripheral_Interface_Bus
+///
+/// When bcm2835_spi_begin() is called it changes the bahaviour of the SPI interface pins from their 
+/// default GPIO behaviour in order to support SPI. While SPI is in use, you will not be able 
+/// to control the state of the SPI pins through the usual bcm2835_spi_gpio_write().
+/// When bcm2835_spi_end() is called, the SPI pins will all revert to inputs, and can then be
+/// configured and controled with the usual bcm2835_gpio_* calls.
+///
+/// The Raspberry Pi GPIO pins used for SPI are:
+/// 
+/// - P1-19 (MOSI)
+/// - P1-21 (MISO) 
+/// - P1-23 (CLK) 
+/// - P1-24 (CE0) 
+/// - P1-26 (CE1)
+///
+/// \par I2C Pins
+///
+/// The bcm2835_i2c_* functions allow you to control the BCM 2835 BSC interface,
+/// allowing you to send and received data by I2C ("eye-squared cee"; generically referred to as "two-wire interface") .
+/// For more information about I?C, see http://en.wikipedia.org/wiki/I%C2%B2C
+///
+/// The Raspberry Pi V2 GPIO pins used for I2C are:
+///
+/// - P1-03 (SDA)
+/// - P1-05 (SLC)
+///
+/// \par Real Time performance constraints
+///
+/// The bcm2835 is a library for user programs (i.e. they run in 'userland'). 
+/// Such programs are not part of the kernel and are usually
+/// subject to paging and swapping by the kernel while it does other things besides running your program. 
+/// This means that you should not expect to get real-time performance or 
+/// real-time timing constraints from such programs. In particular, there is no guarantee that the 
+/// bcm2835_delay() and bcm2835_delayMicroseconds() will return after exactly the time requested. 
+/// In fact, depending on other activity on the host, IO etc, you might get significantly longer delay times
+/// than the one you asked for. So please dont expect to get exactly the time delay you request.
+///
+/// Arjan reports that you can prevent swapping on Linux with the following code fragment:
+///
+/// \code
+///  struct sched_param sp;
+///  memset(&sp, 0, sizeof(sp));
+///  sp.sched_priority = sched_get_priority_max(SCHED_FIFO);
+///  sched_setscheduler(0, SCHED_FIFO, &sp);
+///  mlockall(MCL_CURRENT | MCL_FUTURE);
+/// \endcode
+///
+/// \par Open Source Licensing GPL V2
+///
+/// This is the appropriate option if you want to share the source code of your
+/// application with everyone you distribute it to, and you also want to give them
+/// the right to share who uses it. If you wish to use this software under Open
+/// Source Licensing, you must contribute all your source code to the open source
+/// community in accordance with the GPL Version 2 when your application is
+/// distributed. See http://www.gnu.org/copyleft/gpl.html and COPYING
+///
+/// \par Acknowledgements
+///
+/// Some of this code has been inspired by Dom and Gert.
+/// The I2C code has been inspired by Alan Barr.
+/// 
+/// \par Revision History
+///
+/// \version 1.0 Initial release
+/// \version 1.1 Minor bug fixes
+/// \version 1.2 Added support for SPI
+/// \version 1.3 Added bcm2835_spi_transfern()
+/// \version 1.4 Fixed a problem that prevented SPI CE1 being used. Reported by David Robinson.
+/// \version 1.5 Added bcm2835_close() to deinit the library. Suggested by C?sar Ortiz
+/// \version 1.6 Document testing on 2012-07-15-wheezy-raspbian and Occidentalisv01
+///              Functions bcm2835_gpio_ren(), bcm2835_gpio_fen(), bcm2835_gpio_hen()
+///               bcm2835_gpio_len(), bcm2835_gpio_aren() and bcm2835_gpio_afen() now 
+///               changes only the pin specified. Other pins that were already previously
+///               enabled stay enabled.
+///              Added  bcm2835_gpio_clr_ren(), bcm2835_gpio_clr_fen(), bcm2835_gpio_clr_hen()
+///                bcm2835_gpio_clr_len(), bcm2835_gpio_clr_aren(), bcm2835_gpio_clr_afen() 
+///                to clear the enable for individual pins, suggested by Andreas Sundstrom.
+/// \version 1.7 Added bcm2835_spi_transfernb to support different buffers for read and write.
+/// \version 1.8 Improvements to read barrier, as suggested by maddin.
+/// \version 1.9 Improvements contributed by mikew: 
+///              I noticed that it was mallocing memory for the mmaps on /dev/mem.
+///              It's not necessary to do that, you can just mmap the file directly,
+///              so I've removed the mallocs (and frees).
+///              I've also modified delayMicroseconds() to use nanosleep() for long waits,
+///              and a busy wait on a high resolution timer for the rest. This is because
+///              I've found that calling nanosleep() takes at least 100-200 us.
+///              You need to link using '-lrt' using this version.
+///              I've added some unsigned casts to the debug prints to silence compiler
+///              warnings I was getting, fixed some typos, and changed the value of
+///              BCM2835_PAD_HYSTERESIS_ENABLED to 0x08 as per Gert van Loo's doc at
+///              http://www.scribd.com/doc/101830961/GPIO-Pads-Control2
+///              Also added a define for the passwrd value that Gert says is needed to
+///              change pad control settings.
+/// \version 1.10 Changed the names of the delay functions to bcm2835_delay() 
+///              and bcm2835_delayMicroseconds() to prevent collisions with wiringPi.
+///              Macros to map delay()-> bcm2835_delay() and
+///              Macros to map delayMicroseconds()-> bcm2835_delayMicroseconds(), which
+///              can be disabled by defining BCM2835_NO_DELAY_COMPATIBILITY
+/// \version 1.11 Fixed incorrect link to download file
+/// \version 1.12 New GPIO pin definitions for RPi version 2 (which has a different GPIO mapping)             
+/// \version 1.13 New GPIO pin definitions for RPi version 2 plug P5
+///               Hardware base pointers are now available (after initialisation) externally as bcm2835_gpio
+///               bcm2835_pwm bcm2835_clk bcm2835_pads bcm2835_spi0.
+/// \version 1.14 Now compiles even if CLOCK_MONOTONIC_RAW is not available, uses CLOCK_MONOTONIC instead.
+///               Fixed errors in documentation of SPI divider frequencies based on 250MHz clock. 
+///               Reported by Ben Simpson.
+/// \version 1.15 Added bcm2835_close() to end of examples as suggested by Mark Wolfe.
+/// \version 1.16 Added bcm2835_gpio_set_multi, bcm2835_gpio_clr_multi and bcm2835_gpio_write_multi
+///               to allow a mask of pins to be set all at once. Requested by Sebastian Loncar.
+/// \version 1.17  Added bcm2835_gpio_write_mask. Requested by Sebastian Loncar.
+/// \version 1.18 Added bcm2835_i2c_* functions. Changes to bcm2835_delayMicroseconds: 
+///               now uses the RPi system timer counter, instead of clock_gettime, for improved accuracy. 
+///               No need to link with -lrt now. Contributed by Arjan van Vught.
+/// \version 1.19 Removed inlines added by previous patch since they don't seem to work everywhere. 
+///               Reported by olly.
+/// \version 1.20 Patch from Mark Dootson to close /dev/mem after access to the peripherals has been granted.
+/// \version 1.21 delayMicroseconds is now not susceptible to 32 bit timer overruns. 
+///               Patch courtesy Jeremy Mortis.
+/// \version 1.22 Fixed incorrect definition of BCM2835_GPFEN0 which broke the ability to set 
+///               falling edge events. Reported by Mark Dootson.
+/// \version 1.23 Added bcm2835_i2c_set_baudrate and bcm2835_i2c_read_register_rs. 
+///               Improvements to bcm2835_i2c_read and bcm2835_i2c_write functions
+///               to fix ocasional reads not completing. Patched by Mark Dootson.
+/// \version 1.24 Mark Dootson p[atched a problem with his previously submitted code
+///               under high load from other processes. 
+/// \version 1.25 Updated author and distribution location details to airspayce.com
+/// \version 1.26 Added missing unmapmem for pads in bcm2835_close to prevent a memory leak. 
+///               Reported by Hartmut Henkel.
+/// \author  Mike McCauley (mikem@airspayce.com) DO NOT CONTACT THE AUTHOR DIRECTLY: USE THE LISTS
+
+
+
+// Defines for BCM2835
+#ifndef BCM2835_H
+#define BCM2835_H
+
+#include <stdint.h>
+
+/// \defgroup constants Constants for passing to and from library functions
+/// The values here are designed to be passed to various functions in the bcm2835 library.
+/// @{
+
+
+/// This means pin HIGH, true, 3.3volts on a pin.
+#define HIGH 0x1
+/// This means pin LOW, false, 0volts on a pin.
+#define LOW  0x0
+
+/// Speed of the core clock core_clk
+#define BCM2835_CORE_CLK_HZ				250000000	///< 250 MHz
+
+// Physical addresses for various peripheral register sets
+/// Base Physical Address of the BCM 2835 peripheral registers
+#define BCM2835_PERI_BASE               0x20000000
+/// Base Physical Address of the System Timer registers
+#define BCM2835_ST_BASE			(BCM2835_PERI_BASE + 0x3000)
+/// Base Physical Address of the Pads registers
+#define BCM2835_GPIO_PADS               (BCM2835_PERI_BASE + 0x100000)
+/// Base Physical Address of the Clock/timer registers
+#define BCM2835_CLOCK_BASE              (BCM2835_PERI_BASE + 0x101000)
+/// Base Physical Address of the GPIO registers
+#define BCM2835_GPIO_BASE               (BCM2835_PERI_BASE + 0x200000)
+/// Base Physical Address of the SPI0 registers
+#define BCM2835_SPI0_BASE               (BCM2835_PERI_BASE + 0x204000)
+/// Base Physical Address of the BSC0 registers
+#define BCM2835_BSC0_BASE 		(BCM2835_PERI_BASE + 0x205000)
+/// Base Physical Address of the PWM registers
+#define BCM2835_GPIO_PWM                (BCM2835_PERI_BASE + 0x20C000)
+ /// Base Physical Address of the BSC1 registers
+#define BCM2835_BSC1_BASE		(BCM2835_PERI_BASE + 0x804000)
+
+
+/// Base of the ST (System Timer) registers.
+/// Available after bcm2835_init has been called
+extern volatile uint32_t *bcm2835_st;
+
+/// Base of the GPIO registers.
+/// Available after bcm2835_init has been called
+extern volatile uint32_t *bcm2835_gpio;
+
+/// Base of the PWM registers.
+/// Available after bcm2835_init has been called
+extern volatile uint32_t *bcm2835_pwm;
+
+/// Base of the CLK registers.
+/// Available after bcm2835_init has been called
+extern volatile uint32_t *bcm2835_clk;
+
+/// Base of the PADS registers.
+/// Available after bcm2835_init has been called
+extern volatile uint32_t *bcm2835_pads;
+
+/// Base of the SPI0 registers.
+/// Available after bcm2835_init has been called
+extern volatile uint32_t *bcm2835_spi0;
+
+/// Base of the BSC0 registers.
+/// Available after bcm2835_init has been called
+extern volatile uint32_t *bcm2835_bsc0;
+
+/// Base of the BSC1 registers.
+/// Available after bcm2835_init has been called
+extern volatile uint32_t *bcm2835_bsc1;
+
+/// Size of memory page on RPi
+#define BCM2835_PAGE_SIZE               (4*1024)
+/// Size of memory block on RPi
+#define BCM2835_BLOCK_SIZE              (4*1024)
+
+
+// Defines for GPIO
+// The BCM2835 has 54 GPIO pins.
+//      BCM2835 data sheet, Page 90 onwards.
+/// GPIO register offsets from BCM2835_GPIO_BASE. Offsets into the GPIO Peripheral block in bytes per 6.1 Register View
+#define BCM2835_GPFSEL0                      0x0000 ///< GPIO Function Select 0
+#define BCM2835_GPFSEL1                      0x0004 ///< GPIO Function Select 1
+#define BCM2835_GPFSEL2                      0x0008 ///< GPIO Function Select 2
+#define BCM2835_GPFSEL3                      0x000c ///< GPIO Function Select 3
+#define BCM2835_GPFSEL4                      0x0010 ///< GPIO Function Select 4
+#define BCM2835_GPFSEL5                      0x0014 ///< GPIO Function Select 5
+#define BCM2835_GPSET0                       0x001c ///< GPIO Pin Output Set 0
+#define BCM2835_GPSET1                       0x0020 ///< GPIO Pin Output Set 1
+#define BCM2835_GPCLR0                       0x0028 ///< GPIO Pin Output Clear 0
+#define BCM2835_GPCLR1                       0x002c ///< GPIO Pin Output Clear 1
+#define BCM2835_GPLEV0                       0x0034 ///< GPIO Pin Level 0
+#define BCM2835_GPLEV1                       0x0038 ///< GPIO Pin Level 1
+#define BCM2835_GPEDS0                       0x0040 ///< GPIO Pin Event Detect Status 0
+#define BCM2835_GPEDS1                       0x0044 ///< GPIO Pin Event Detect Status 1
+#define BCM2835_GPREN0                       0x004c ///< GPIO Pin Rising Edge Detect Enable 0
+#define BCM2835_GPREN1                       0x0050 ///< GPIO Pin Rising Edge Detect Enable 1
+#define BCM2835_GPFEN0                       0x0058 ///< GPIO Pin Falling Edge Detect Enable 0
+#define BCM2835_GPFEN1                       0x005c ///< GPIO Pin Falling Edge Detect Enable 1
+#define BCM2835_GPHEN0                       0x0064 ///< GPIO Pin High Detect Enable 0
+#define BCM2835_GPHEN1                       0x0068 ///< GPIO Pin High Detect Enable 1
+#define BCM2835_GPLEN0                       0x0070 ///< GPIO Pin Low Detect Enable 0
+#define BCM2835_GPLEN1                       0x0074 ///< GPIO Pin Low Detect Enable 1
+#define BCM2835_GPAREN0                      0x007c ///< GPIO Pin Async. Rising Edge Detect 0
+#define BCM2835_GPAREN1                      0x0080 ///< GPIO Pin Async. Rising Edge Detect 1
+#define BCM2835_GPAFEN0                      0x0088 ///< GPIO Pin Async. Falling Edge Detect 0
+#define BCM2835_GPAFEN1                      0x008c ///< GPIO Pin Async. Falling Edge Detect 1
+#define BCM2835_GPPUD                        0x0094 ///< GPIO Pin Pull-up/down Enable
+#define BCM2835_GPPUDCLK0                    0x0098 ///< GPIO Pin Pull-up/down Enable Clock 0
+#define BCM2835_GPPUDCLK1                    0x009c ///< GPIO Pin Pull-up/down Enable Clock 1
+
+/// \brief bcm2835PortFunction
+/// Port function select modes for bcm2835_gpio_fsel()
+typedef enum
+{
+    BCM2835_GPIO_FSEL_INPT  = 0b000,   ///< Input
+    BCM2835_GPIO_FSEL_OUTP  = 0b001,   ///< Output
+    BCM2835_GPIO_FSEL_ALT0  = 0b100,   ///< Alternate function 0
+    BCM2835_GPIO_FSEL_ALT1  = 0b101,   ///< Alternate function 1
+    BCM2835_GPIO_FSEL_ALT2  = 0b110,   ///< Alternate function 2
+    BCM2835_GPIO_FSEL_ALT3  = 0b111,   ///< Alternate function 3
+    BCM2835_GPIO_FSEL_ALT4  = 0b011,   ///< Alternate function 4
+    BCM2835_GPIO_FSEL_ALT5  = 0b010,   ///< Alternate function 5
+    BCM2835_GPIO_FSEL_MASK  = 0b111    ///< Function select bits mask
+} bcm2835FunctionSelect;
+
+/// \brief bcm2835PUDControl
+/// Pullup/Pulldown defines for bcm2835_gpio_pud()
+typedef enum
+{
+    BCM2835_GPIO_PUD_OFF     = 0b00,   ///< Off ? disable pull-up/down
+    BCM2835_GPIO_PUD_DOWN    = 0b01,   ///< Enable Pull Down control
+    BCM2835_GPIO_PUD_UP      = 0b10    ///< Enable Pull Up control
+} bcm2835PUDControl;
+
+/// Pad control register offsets from BCM2835_GPIO_PADS
+#define BCM2835_PADS_GPIO_0_27               0x002c ///< Pad control register for pads 0 to 27
+#define BCM2835_PADS_GPIO_28_45              0x0030 ///< Pad control register for pads 28 to 45
+#define BCM2835_PADS_GPIO_46_53              0x0034 ///< Pad control register for pads 46 to 53
+
+/// Pad Control masks
+#define BCM2835_PAD_PASSWRD                  (0x5A << 24)  ///< Password to enable setting pad mask
+#define BCM2835_PAD_SLEW_RATE_UNLIMITED      0x10 ///< Slew rate unlimited
+#define BCM2835_PAD_HYSTERESIS_ENABLED       0x08 ///< Hysteresis enabled
+#define BCM2835_PAD_DRIVE_2mA                0x00 ///< 2mA drive current
+#define BCM2835_PAD_DRIVE_4mA                0x01 ///< 4mA drive current
+#define BCM2835_PAD_DRIVE_6mA                0x02 ///< 6mA drive current
+#define BCM2835_PAD_DRIVE_8mA                0x03 ///< 8mA drive current
+#define BCM2835_PAD_DRIVE_10mA               0x04 ///< 10mA drive current
+#define BCM2835_PAD_DRIVE_12mA               0x05 ///< 12mA drive current
+#define BCM2835_PAD_DRIVE_14mA               0x06 ///< 14mA drive current
+#define BCM2835_PAD_DRIVE_16mA               0x07 ///< 16mA drive current
+
+/// \brief bcm2835PadGroup
+/// Pad group specification for bcm2835_gpio_pad()
+typedef enum
+{
+    BCM2835_PAD_GROUP_GPIO_0_27         = 0, ///< Pad group for GPIO pads 0 to 27
+    BCM2835_PAD_GROUP_GPIO_28_45        = 1, ///< Pad group for GPIO pads 28 to 45
+    BCM2835_PAD_GROUP_GPIO_46_53        = 2  ///< Pad group for GPIO pads 46 to 53
+} bcm2835PadGroup;
+
+/// \brief GPIO Pin Numbers
+///
+/// Here we define Raspberry Pin GPIO pins on P1 in terms of the underlying BCM GPIO pin numbers.
+/// These can be passed as a pin number to any function requiring a pin.
+/// Not all pins on the RPi 26 bin IDE plug are connected to GPIO pins
+/// and some can adopt an alternate function.
+/// RPi version 2 has some slightly different pinouts, and these are values RPI_V2_*.
+/// At bootup, pins 8 and 10 are set to UART0_TXD, UART0_RXD (ie the alt0 function) respectively
+/// When SPI0 is in use (ie after bcm2835_spi_begin()), pins 19, 21, 23, 24, 26 are dedicated to SPI
+/// and cant be controlled independently
+typedef enum
+{
+    RPI_GPIO_P1_03        =  0,  ///< Version 1, Pin P1-03
+    RPI_GPIO_P1_05        =  1,  ///< Version 1, Pin P1-05
+    RPI_GPIO_P1_07        =  4,  ///< Version 1, Pin P1-07
+    RPI_GPIO_P1_08        = 14,  ///< Version 1, Pin P1-08, defaults to alt function 0 UART0_TXD
+    RPI_GPIO_P1_10        = 15,  ///< Version 1, Pin P1-10, defaults to alt function 0 UART0_RXD
+    RPI_GPIO_P1_11        = 17,  ///< Version 1, Pin P1-11
+    RPI_GPIO_P1_12        = 18,  ///< Version 1, Pin P1-12
+    RPI_GPIO_P1_13        = 21,  ///< Version 1, Pin P1-13
+    RPI_GPIO_P1_15        = 22,  ///< Version 1, Pin P1-15
+    RPI_GPIO_P1_16        = 23,  ///< Version 1, Pin P1-16
+    RPI_GPIO_P1_18        = 24,  ///< Version 1, Pin P1-18
+    RPI_GPIO_P1_19        = 10,  ///< Version 1, Pin P1-19, MOSI when SPI0 in use
+    RPI_GPIO_P1_21        =  9,  ///< Version 1, Pin P1-21, MISO when SPI0 in use
+    RPI_GPIO_P1_22        = 25,  ///< Version 1, Pin P1-22
+    RPI_GPIO_P1_23        = 11,  ///< Version 1, Pin P1-23, CLK when SPI0 in use
+    RPI_GPIO_P1_24        =  8,  ///< Version 1, Pin P1-24, CE0 when SPI0 in use
+    RPI_GPIO_P1_26        =  7,  ///< Version 1, Pin P1-26, CE1 when SPI0 in use
+
+    // RPi Version 2
+    RPI_V2_GPIO_P1_03     =  2,  ///< Version 2, Pin P1-03
+    RPI_V2_GPIO_P1_05     =  3,  ///< Version 2, Pin P1-05
+    RPI_V2_GPIO_P1_07     =  4,  ///< Version 2, Pin P1-07
+    RPI_V2_GPIO_P1_08     = 14,  ///< Version 2, Pin P1-08, defaults to alt function 0 UART0_TXD
+    RPI_V2_GPIO_P1_10     = 15,  ///< Version 2, Pin P1-10, defaults to alt function 0 UART0_RXD
+    RPI_V2_GPIO_P1_11     = 17,  ///< Version 2, Pin P1-11
+    RPI_V2_GPIO_P1_12     = 18,  ///< Version 2, Pin P1-12
+    RPI_V2_GPIO_P1_13     = 27,  ///< Version 2, Pin P1-13
+    RPI_V2_GPIO_P1_15     = 22,  ///< Version 2, Pin P1-15
+    RPI_V2_GPIO_P1_16     = 23,  ///< Version 2, Pin P1-16
+    RPI_V2_GPIO_P1_18     = 24,  ///< Version 2, Pin P1-18
+    RPI_V2_GPIO_P1_19     = 10,  ///< Version 2, Pin P1-19, MOSI when SPI0 in use
+    RPI_V2_GPIO_P1_21     =  9,  ///< Version 2, Pin P1-21, MISO when SPI0 in use
+    RPI_V2_GPIO_P1_22     = 25,  ///< Version 2, Pin P1-22
+    RPI_V2_GPIO_P1_23     = 11,  ///< Version 2, Pin P1-23, CLK when SPI0 in use
+    RPI_V2_GPIO_P1_24     =  8,  ///< Version 2, Pin P1-24, CE0 when SPI0 in use
+    RPI_V2_GPIO_P1_26     =  7,  ///< Version 2, Pin P1-26, CE1 when SPI0 in use
+
+    // RPi Version 2, new plug P5
+    RPI_V2_GPIO_P5_03     = 28,  ///< Version 2, Pin P5-03
+    RPI_V2_GPIO_P5_04     = 29,  ///< Version 2, Pin P5-04
+    RPI_V2_GPIO_P5_05     = 30,  ///< Version 2, Pin P5-05
+    RPI_V2_GPIO_P5_06     = 31,  ///< Version 2, Pin P5-06
+
+} RPiGPIOPin;
+
+// Defines for SPI
+// GPIO register offsets from BCM2835_SPI0_BASE. 
+// Offsets into the SPI Peripheral block in bytes per 10.5 SPI Register Map
+#define BCM2835_SPI0_CS                      0x0000 ///< SPI Master Control and Status
+#define BCM2835_SPI0_FIFO                    0x0004 ///< SPI Master TX and RX FIFOs
+#define BCM2835_SPI0_CLK                     0x0008 ///< SPI Master Clock Divider
+#define BCM2835_SPI0_DLEN                    0x000c ///< SPI Master Data Length
+#define BCM2835_SPI0_LTOH                    0x0010 ///< SPI LOSSI mode TOH
+#define BCM2835_SPI0_DC                      0x0014 ///< SPI DMA DREQ Controls
+
+// Register masks for SPI0_CS
+#define BCM2835_SPI0_CS_LEN_LONG             0x02000000 ///< Enable Long data word in Lossi mode if DMA_LEN is set
+#define BCM2835_SPI0_CS_DMA_LEN              0x01000000 ///< Enable DMA mode in Lossi mode
+#define BCM2835_SPI0_CS_CSPOL2               0x00800000 ///< Chip Select 2 Polarity
+#define BCM2835_SPI0_CS_CSPOL1               0x00400000 ///< Chip Select 1 Polarity
+#define BCM2835_SPI0_CS_CSPOL0               0x00200000 ///< Chip Select 0 Polarity
+#define BCM2835_SPI0_CS_RXF                  0x00100000 ///< RXF - RX FIFO Full
+#define BCM2835_SPI0_CS_RXR                  0x00080000 ///< RXR RX FIFO needs Reading ( full)
+#define BCM2835_SPI0_CS_TXD                  0x00040000 ///< TXD TX FIFO can accept Data
+#define BCM2835_SPI0_CS_RXD                  0x00020000 ///< RXD RX FIFO contains Data
+#define BCM2835_SPI0_CS_DONE                 0x00010000 ///< Done transfer Done
+#define BCM2835_SPI0_CS_TE_EN                0x00008000 ///< Unused
+#define BCM2835_SPI0_CS_LMONO                0x00004000 ///< Unused
+#define BCM2835_SPI0_CS_LEN                  0x00002000 ///< LEN LoSSI enable
+#define BCM2835_SPI0_CS_REN                  0x00001000 ///< REN Read Enable
+#define BCM2835_SPI0_CS_ADCS                 0x00000800 ///< ADCS Automatically Deassert Chip Select
+#define BCM2835_SPI0_CS_INTR                 0x00000400 ///< INTR Interrupt on RXR
+#define BCM2835_SPI0_CS_INTD                 0x00000200 ///< INTD Interrupt on Done
+#define BCM2835_SPI0_CS_DMAEN                0x00000100 ///< DMAEN DMA Enable
+#define BCM2835_SPI0_CS_TA                   0x00000080 ///< Transfer Active
+#define BCM2835_SPI0_CS_CSPOL                0x00000040 ///< Chip Select Polarity
+#define BCM2835_SPI0_CS_CLEAR                0x00000030 ///< Clear FIFO Clear RX and TX
+#define BCM2835_SPI0_CS_CLEAR_RX             0x00000020 ///< Clear FIFO Clear RX 
+#define BCM2835_SPI0_CS_CLEAR_TX             0x00000010 ///< Clear FIFO Clear TX 
+#define BCM2835_SPI0_CS_CPOL                 0x00000008 ///< Clock Polarity
+#define BCM2835_SPI0_CS_CPHA                 0x00000004 ///< Clock Phase
+#define BCM2835_SPI0_CS_CS                   0x00000003 ///< Chip Select
+
+/// \brief bcm2835SPIBitOrder SPI Bit order
+/// Specifies the SPI data bit ordering for bcm2835_spi_setBitOrder()
+typedef enum
+{
+    BCM2835_SPI_BIT_ORDER_LSBFIRST = 0,  ///< LSB First
+    BCM2835_SPI_BIT_ORDER_MSBFIRST = 1   ///< MSB First
+}bcm2835SPIBitOrder;
+
+/// \brief SPI Data mode
+/// Specify the SPI data mode to be passed to bcm2835_spi_setDataMode()
+typedef enum
+{
+    BCM2835_SPI_MODE0 = 0,  ///< CPOL = 0, CPHA = 0
+    BCM2835_SPI_MODE1 = 1,  ///< CPOL = 0, CPHA = 1
+    BCM2835_SPI_MODE2 = 2,  ///< CPOL = 1, CPHA = 0
+    BCM2835_SPI_MODE3 = 3,  ///< CPOL = 1, CPHA = 1
+}bcm2835SPIMode;
+
+/// \brief bcm2835SPIChipSelect
+/// Specify the SPI chip select pin(s)
+typedef enum
+{
+    BCM2835_SPI_CS0 = 0,     ///< Chip Select 0
+    BCM2835_SPI_CS1 = 1,     ///< Chip Select 1
+    BCM2835_SPI_CS2 = 2,     ///< Chip Select 2 (ie pins CS1 and CS2 are asserted)
+    BCM2835_SPI_CS_NONE = 3, ///< No CS, control it yourself
+} bcm2835SPIChipSelect;
+
+/// \brief bcm2835SPIClockDivider
+/// Specifies the divider used to generate the SPI clock from the system clock.
+/// Figures below give the divider, clock period and clock frequency.
+/// Clock divided is based on nominal base clock rate of 250MHz
+/// It is reported that (contrary to the documentation) any even divider may used.
+/// The frequencies shown for each divider have been confirmed by measurement
+typedef enum
+{
+    BCM2835_SPI_CLOCK_DIVIDER_65536 = 0,       ///< 65536 = 262.144us = 3.814697260kHz
+    BCM2835_SPI_CLOCK_DIVIDER_32768 = 32768,   ///< 32768 = 131.072us = 7.629394531kHz
+    BCM2835_SPI_CLOCK_DIVIDER_16384 = 16384,   ///< 16384 = 65.536us = 15.25878906kHz
+    BCM2835_SPI_CLOCK_DIVIDER_8192  = 8192,    ///< 8192 = 32.768us = 30/51757813kHz
+    BCM2835_SPI_CLOCK_DIVIDER_4096  = 4096,    ///< 4096 = 16.384us = 61.03515625kHz
+    BCM2835_SPI_CLOCK_DIVIDER_2048  = 2048,    ///< 2048 = 8.192us = 122.0703125kHz
+    BCM2835_SPI_CLOCK_DIVIDER_1024  = 1024,    ///< 1024 = 4.096us = 244.140625kHz
+    BCM2835_SPI_CLOCK_DIVIDER_512   = 512,     ///< 512 = 2.048us = 488.28125kHz
+    BCM2835_SPI_CLOCK_DIVIDER_256   = 256,     ///< 256 = 1.024us = 976.5625MHz
+    BCM2835_SPI_CLOCK_DIVIDER_128   = 128,     ///< 128 = 512ns = = 1.953125MHz
+    BCM2835_SPI_CLOCK_DIVIDER_64    = 64,      ///< 64 = 256ns = 3.90625MHz
+    BCM2835_SPI_CLOCK_DIVIDER_32    = 32,      ///< 32 = 128ns = 7.8125MHz
+    BCM2835_SPI_CLOCK_DIVIDER_16    = 16,      ///< 16 = 64ns = 15.625MHz
+    BCM2835_SPI_CLOCK_DIVIDER_8     = 8,       ///< 8 = 32ns = 31.25MHz
+    BCM2835_SPI_CLOCK_DIVIDER_4     = 4,       ///< 4 = 16ns = 62.5MHz
+    BCM2835_SPI_CLOCK_DIVIDER_2     = 2,       ///< 2 = 8ns = 125MHz, fastest you can get
+    BCM2835_SPI_CLOCK_DIVIDER_1     = 1,       ///< 0 = 262.144us = 3.814697260kHz, same as 0/65536
+} bcm2835SPIClockDivider;
+
+// Defines for I2C
+// GPIO register offsets from BCM2835_BSC*_BASE.
+// Offsets into the BSC Peripheral block in bytes per 3.1 BSC Register Map
+#define BCM2835_BSC_C 							0x0000 ///< BSC Master Control
+#define BCM2835_BSC_S 							0x0004 ///< BSC Master Status
+#define BCM2835_BSC_DLEN						0x0008 ///< BSC Master Data Length
+#define BCM2835_BSC_A 							0x000c ///< BSC Master Slave Address
+#define BCM2835_BSC_FIFO						0x0010 ///< BSC Master Data FIFO
+#define BCM2835_BSC_DIV							0x0014 ///< BSC Master Clock Divider
+#define BCM2835_BSC_DEL							0x0018 ///< BSC Master Data Delay
+#define BCM2835_BSC_CLKT						0x001c ///< BSC Master Clock Stretch Timeout
+
+// Register masks for BSC_C
+#define BCM2835_BSC_C_I2CEN 					0x00008000 ///< I2C Enable, 0 = disabled, 1 = enabled
+#define BCM2835_BSC_C_INTR 						0x00000400 ///< Interrupt on RX
+#define BCM2835_BSC_C_INTT 						0x00000200 ///< Interrupt on TX
+#define BCM2835_BSC_C_INTD 						0x00000100 ///< Interrupt on DONE
+#define BCM2835_BSC_C_ST 						0x00000080 ///< Start transfer, 1 = Start a new transfer
+#define BCM2835_BSC_C_CLEAR_1 					0x00000020 ///< Clear FIFO Clear
+#define BCM2835_BSC_C_CLEAR_2 					0x00000010 ///< Clear FIFO Clear
+#define BCM2835_BSC_C_READ 						0x00000001 ///<	Read transfer
+
+// Register masks for BSC_S
+#define BCM2835_BSC_S_CLKT 						0x00000200 ///< Clock stretch timeout
+#define BCM2835_BSC_S_ERR 						0x00000100 ///< ACK error
+#define BCM2835_BSC_S_RXF 						0x00000080 ///< RXF FIFO full, 0 = FIFO is not full, 1 = FIFO is full
+#define BCM2835_BSC_S_TXE 						0x00000040 ///< TXE FIFO full, 0 = FIFO is not full, 1 = FIFO is full
+#define BCM2835_BSC_S_RXD 						0x00000020 ///< RXD FIFO contains data
+#define BCM2835_BSC_S_TXD 						0x00000010 ///< TXD FIFO can accept data
+#define BCM2835_BSC_S_RXR 						0x00000008 ///< RXR FIFO needs reading (full)
+#define BCM2835_BSC_S_TXW 						0x00000004 ///< TXW FIFO needs writing (full)
+#define BCM2835_BSC_S_DONE 						0x00000002 ///< Transfer DONE
+#define BCM2835_BSC_S_TA 						0x00000001 ///< Transfer Active
+
+#define BCM2835_BSC_FIFO_SIZE   				16 ///< BSC FIFO size
+
+/// \brief bcm2835I2CClockDivider
+/// Specifies the divider used to generate the I2C clock from the system clock.
+/// Clock divided is based on nominal base clock rate of 250MHz
+typedef enum
+{
+    BCM2835_I2C_CLOCK_DIVIDER_2500   = 2500,      ///< 2500 = 10us = 100 kHz
+    BCM2835_I2C_CLOCK_DIVIDER_626    = 626,       ///< 622 = 2.504us = 399.3610 kHz
+    BCM2835_I2C_CLOCK_DIVIDER_150    = 150,       ///< 150 = 60ns = 1.666 MHz (default at reset)
+    BCM2835_I2C_CLOCK_DIVIDER_148    = 148,       ///< 148 = 59ns = 1.689 MHz
+} bcm2835I2CClockDivider;
+
+/// \brief bcm2835I2CReasonCodes
+/// Specifies the reason codes for the bcm2835_i2c_write and bcm2835_i2c_read functions.
+typedef enum
+{
+    BCM2835_I2C_REASON_OK   		 = 0x00,      ///< Success
+    BCM2835_I2C_REASON_ERROR_NACK    = 0x01,      ///< Received a NACK
+    BCM2835_I2C_REASON_ERROR_CLKT    = 0x02,      ///< Received Clock Stretch Timeout
+    BCM2835_I2C_REASON_ERROR_DATA    = 0x04,      ///< Not all data is sent / received
+} bcm2835I2CReasonCodes;
+
+// Defines for ST
+// GPIO register offsets from BCM2835_ST_BASE.
+// Offsets into the ST Peripheral block in bytes per 12.1 System Timer Registers
+// The System Timer peripheral provides four 32-bit timer channels and a single 64-bit free running counter.
+// BCM2835_ST_CLO is the System Timer Counter Lower bits register.
+// The system timer free-running counter lower register is a read-only register that returns the current value
+// of the lower 32-bits of the free running counter.
+// BCM2835_ST_CHI is the System Timer Counter Upper bits register.
+// The system timer free-running counter upper register is a read-only register that returns the current value
+// of the upper 32-bits of the free running counter.
+#define BCM2835_ST_CS 							0x0000 ///< System Timer Control/Status
+#define BCM2835_ST_CLO 							0x0004 ///< System Timer Counter Lower 32 bits
+#define BCM2835_ST_CHI 							0x0008 ///< System Timer Counter Upper 32 bits
+
+/// @}
+
+
+// Defines for PWM
+#define BCM2835_PWM_CONTROL 0
+#define BCM2835_PWM_STATUS  1
+#define BCM2835_PWM0_RANGE  4
+#define BCM2835_PWM0_DATA   5
+#define BCM2835_PWM1_RANGE  8
+#define BCM2835_PWM1_DATA   9
+
+#define BCM2835_PWMCLK_CNTL     40
+#define BCM2835_PWMCLK_DIV      41
+
+#define BCM2835_PWM1_MS_MODE    0x8000  /// Run in MS mode
+#define BCM2835_PWM1_USEFIFO    0x2000  /// Data from FIFO
+#define BCM2835_PWM1_REVPOLAR   0x1000  /// Reverse polarity
+#define BCM2835_PWM1_OFFSTATE   0x0800  /// Ouput Off state
+#define BCM2835_PWM1_REPEATFF   0x0400  /// Repeat last value if FIFO empty
+#define BCM2835_PWM1_SERIAL     0x0200  /// Run in serial mode
+#define BCM2835_PWM1_ENABLE     0x0100  /// Channel Enable
+
+#define BCM2835_PWM0_MS_MODE    0x0080  /// Run in MS mode
+#define BCM2835_PWM0_USEFIFO    0x0020  /// Data from FIFO
+#define BCM2835_PWM0_REVPOLAR   0x0010  /// Reverse polarity
+#define BCM2835_PWM0_OFFSTATE   0x0008  /// Ouput Off state
+#define BCM2835_PWM0_REPEATFF   0x0004  /// Repeat last value if FIFO empty
+#define BCM2835_PWM0_SERIAL     0x0002  /// Run in serial mode
+#define BCM2835_PWM0_ENABLE     0x0001  /// Channel Enable
+
+// Historical name compatibility
+#ifndef BCM2835_NO_DELAY_COMPATIBILITY
+#define delay(x) bcm2835_delay(x)
+#define delayMicroseconds(x) bcm2835_delayMicroseconds(x)
+#endif
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+    /// \defgroup init Library initialisation and management
+    /// These functions allow you to intialise and control the bcm2835 library
+    /// @{
+
+    /// Initialise the library by opening /dev/mem and getting pointers to the 
+    /// internal memory for BCM 2835 device registers. You must call this (successfully)
+    /// before calling any other 
+    /// functions in this library (except bcm2835_set_debug). 
+    /// If bcm2835_init() fails by returning 0, 
+    /// calling any other function may result in crashes or other failures.
+    /// Prints messages to stderr in case of errors.
+    /// \return 1 if successful else 0
+    extern int bcm2835_init(void);
+
+    /// Close the library, deallocating any allocated memory and closing /dev/mem
+    /// \return 1 if successful else 0
+    extern int bcm2835_close(void);
+
+    /// Sets the debug level of the library.
+    /// A value of 1 prevents mapping to /dev/mem, and makes the library print out
+    /// what it would do, rather than accessing the GPIO registers.
+    /// A value of 0, the default, causes normal operation.
+    /// Call this before calling bcm2835_init();
+    /// \param[in] debug The new debug level. 1 means debug
+    extern void  bcm2835_set_debug(uint8_t debug);
+
+    /// @} // end of init
+
+    /// \defgroup lowlevel Low level register access
+    /// These functions provide low level register access, and should not generally
+    /// need to be used 
+    /// 
+    /// @{
+
+    /// Reads 32 bit value from a peripheral address
+    /// The read is done twice, and is therefore always safe in terms of 
+    /// manual section 1.3 Peripheral access precautions for correct memory ordering
+    /// \param[in] paddr Physical address to read from. See BCM2835_GPIO_BASE etc.
+    /// \return the value read from the 32 bit register
+    /// \sa Physical Addresses
+    extern uint32_t bcm2835_peri_read(volatile uint32_t* paddr);
+
+
+    /// Reads 32 bit value from a peripheral address without the read barrier
+    /// You should only use this when your code has previously called bcm2835_peri_read()
+    /// within the same peripheral, and no other peripheral access has occurred since.
+    /// \param[in] paddr Physical address to read from. See BCM2835_GPIO_BASE etc.
+    /// \return the value read from the 32 bit register
+    /// \sa Physical Addresses
+    extern uint32_t bcm2835_peri_read_nb(volatile uint32_t* paddr);
+
+
+    /// Writes 32 bit value from a peripheral address
+    /// The write is done twice, and is therefore always safe in terms of 
+    /// manual section 1.3 Peripheral access precautions for correct memory ordering
+    /// \param[in] paddr Physical address to read from. See BCM2835_GPIO_BASE etc.
+    /// \param[in] value The 32 bit value to write
+    /// \sa Physical Addresses
+    extern void bcm2835_peri_write(volatile uint32_t* paddr, uint32_t value);
+
+    /// Writes 32 bit value from a peripheral address without the write barrier
+    /// You should only use this when your code has previously called bcm2835_peri_write()
+    /// within the same peripheral, and no other peripheral access has occurred since.
+    /// \param[in] paddr Physical address to read from. See BCM2835_GPIO_BASE etc.
+    /// \param[in] value The 32 bit value to write
+    /// \sa Physical Addresses
+    extern void bcm2835_peri_write_nb(volatile uint32_t* paddr, uint32_t value);
+
+    /// Alters a number of bits in a 32 peripheral regsiter.
+    /// It reads the current valu and then alters the bits deines as 1 in mask, 
+    /// according to the bit value in value. 
+    /// All other bits that are 0 in the mask are unaffected.
+    /// Use this to alter a subset of the bits in a register.
+    /// The write is done twice, and is therefore always safe in terms of 
+    /// manual section 1.3 Peripheral access precautions for correct memory ordering
+    /// \param[in] paddr Physical address to read from. See BCM2835_GPIO_BASE etc.
+    /// \param[in] value The 32 bit value to write, masked in by mask.
+    /// \param[in] mask Bitmask that defines the bits that will be altered in the register.
+    /// \sa Physical Addresses
+    extern void bcm2835_peri_set_bits(volatile uint32_t* paddr, uint32_t value, uint32_t mask);
+    /// @} // end of lowlevel
+
+    /// \defgroup gpio GPIO register access
+    /// These functions allow you to control the GPIO interface. You can set the 
+    /// function of each GPIO pin, read the input state and set the output state.
+    /// @{
+
+    /// Sets the Function Select register for the given pin, which configures
+    /// the pin as Input, Output or one of the 6 alternate functions.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from RPiGPIOPin.
+    /// \param[in] mode Mode to set the pin to, one of BCM2835_GPIO_FSEL_* from \ref bcm2835FunctionSelect
+    extern void bcm2835_gpio_fsel(uint8_t pin, uint8_t mode);
+
+    /// Sets the specified pin output to 
+    /// HIGH.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    /// \sa bcm2835_gpio_write()
+    extern void bcm2835_gpio_set(uint8_t pin);
+
+    /// Sets the specified pin output to 
+    /// LOW.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    /// \sa bcm2835_gpio_write()
+    extern void bcm2835_gpio_clr(uint8_t pin);
+
+    /// Sets any of the first 32 GPIO output pins specified in the mask to 
+    /// HIGH.
+    /// \param[in] mask Mask of pins to affect. Use eg: (1 << RPI_GPIO_P1_03) | (1 << RPI_GPIO_P1_05)
+    /// \sa bcm2835_gpio_write_multi()
+    extern void bcm2835_gpio_set_multi(uint32_t mask);
+
+    /// Sets any of the first 32 GPIO output pins specified in the mask to 
+    /// LOW.
+    /// \param[in] mask Mask of pins to affect. Use eg: (1 << RPI_GPIO_P1_03) | (1 << RPI_GPIO_P1_05)
+    /// \sa bcm2835_gpio_write_multi()
+    extern void bcm2835_gpio_clr_multi(uint32_t mask);
+
+    /// Reads the current level on the specified 
+    /// pin and returns either HIGH or LOW. Works whether or not the pin
+    /// is an input or an output.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    /// \return the current level  either HIGH or LOW
+    extern uint8_t bcm2835_gpio_lev(uint8_t pin);
+
+    /// Event Detect Status.
+    /// Tests whether the specified pin has detected a level or edge
+    /// as requested by bcm2835_gpio_ren(), bcm2835_gpio_fen(), bcm2835_gpio_hen(), 
+    /// bcm2835_gpio_len(), bcm2835_gpio_aren(), bcm2835_gpio_afen().
+    /// Clear the flag for a given pin by calling bcm2835_gpio_set_eds(pin);
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    /// \return HIGH if the event detect status for th given pin is true.
+    extern uint8_t bcm2835_gpio_eds(uint8_t pin);
+
+    /// Sets the Event Detect Status register for a given pin to 1, 
+    /// which has the effect of clearing the flag. Use this afer seeing
+    /// an Event Detect Status on the pin.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_set_eds(uint8_t pin);
+
+    /// Enable Rising Edge Detect Enable for the specified pin.
+    /// When a rising edge is detected, sets the appropriate pin in Event Detect Status.
+    /// The GPRENn registers use
+    /// synchronous edge detection. This means the input signal is sampled using the
+    /// system clock and then it is looking for a ?011? pattern on the sampled signal. This
+    /// has the effect of suppressing glitches.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_ren(uint8_t pin);
+
+    /// Disable Rising Edge Detect Enable for the specified pin.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_clr_ren(uint8_t pin);
+
+    /// Enable Falling Edge Detect Enable for the specified pin.
+    /// When a falling edge is detected, sets the appropriate pin in Event Detect Status.
+    /// The GPRENn registers use
+    /// synchronous edge detection. This means the input signal is sampled using the
+    /// system clock and then it is looking for a ?100? pattern on the sampled signal. This
+    /// has the effect of suppressing glitches.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_fen(uint8_t pin);
+
+    /// Disable Falling Edge Detect Enable for the specified pin.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_clr_fen(uint8_t pin);
+
+    /// Enable High Detect Enable for the specified pin.
+    /// When a HIGH level is detected on the pin, sets the appropriate pin in Event Detect Status.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_hen(uint8_t pin);
+
+    /// Disable High Detect Enable for the specified pin.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_clr_hen(uint8_t pin);
+
+    /// Enable Low Detect Enable for the specified pin.
+    /// When a LOW level is detected on the pin, sets the appropriate pin in Event Detect Status.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_len(uint8_t pin);
+
+    /// Disable Low Detect Enable for the specified pin.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_clr_len(uint8_t pin);
+
+    /// Enable Asynchronous Rising Edge Detect Enable for the specified pin.
+    /// When a rising edge is detected, sets the appropriate pin in Event Detect Status.
+    /// Asynchronous means the incoming signal is not sampled by the system clock. As such
+    /// rising edges of very short duration can be detected.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_aren(uint8_t pin);
+
+    /// Disable Asynchronous Rising Edge Detect Enable for the specified pin.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_clr_aren(uint8_t pin);
+
+    /// Enable Asynchronous Falling Edge Detect Enable for the specified pin.
+    /// When a falling edge is detected, sets the appropriate pin in Event Detect Status.
+    /// Asynchronous means the incoming signal is not sampled by the system clock. As such
+    /// falling edges of very short duration can be detected.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_afen(uint8_t pin);
+
+    /// Disable Asynchronous Falling Edge Detect Enable for the specified pin.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    extern void bcm2835_gpio_clr_afen(uint8_t pin);
+
+    /// Sets the Pull-up/down register for the given pin. This is
+    /// used with bcm2835_gpio_pudclk() to set the  Pull-up/down resistor for the given pin.
+    /// However, it is usually more convenient to use bcm2835_gpio_set_pud().
+    /// \param[in] pud The desired Pull-up/down mode. One of BCM2835_GPIO_PUD_* from bcm2835PUDControl
+    /// \sa bcm2835_gpio_set_pud()
+    extern void bcm2835_gpio_pud(uint8_t pud);
+
+    /// Clocks the Pull-up/down value set earlier by bcm2835_gpio_pud() into the pin.
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    /// \param[in] on HIGH to clock the value from bcm2835_gpio_pud() into the pin. 
+    /// LOW to remove the clock. 
+    /// \sa bcm2835_gpio_set_pud()
+    extern void bcm2835_gpio_pudclk(uint8_t pin, uint8_t on);
+
+    /// Reads and returns the Pad Control for the given GPIO group.
+    /// \param[in] group The GPIO pad group number, one of BCM2835_PAD_GROUP_GPIO_*
+    /// \return Mask of bits from BCM2835_PAD_* from \ref bcm2835PadGroup
+    extern uint32_t bcm2835_gpio_pad(uint8_t group);
+
+    /// Sets the Pad Control for the given GPIO group.
+    /// \param[in] group The GPIO pad group number, one of BCM2835_PAD_GROUP_GPIO_*
+    /// \param[in] control Mask of bits from BCM2835_PAD_* from \ref bcm2835PadGroup
+    extern void bcm2835_gpio_set_pad(uint8_t group, uint32_t control);
+
+    /// Delays for the specified number of milliseconds.
+    /// Uses nanosleep(), and therefore does not use CPU until the time is up.
+    /// However, you are at the mercy of nanosleep(). From the manual for nanosleep():
+    /// If the interval specified in req is not an exact multiple of the granularity  
+    /// underlying  clock  (see  time(7)),  then the interval will be
+    /// rounded up to the next multiple. Furthermore, after the sleep completes, 
+    /// there may still be a delay before the CPU becomes free to once
+    /// again execute the calling thread.
+    /// \param[in] millis Delay in milliseconds
+    extern void bcm2835_delay (unsigned int millis);
+
+    /// Delays for the specified number of microseconds.
+    /// Uses a combination of nanosleep() and a busy wait loop on the BCM2835 system timers,
+    /// However, you are at the mercy of nanosleep(). From the manual for nanosleep():
+    /// If the interval specified in req is not an exact multiple of the granularity  
+    /// underlying  clock  (see  time(7)),  then the interval will be
+    /// rounded up to the next multiple. Furthermore, after the sleep completes, 
+    /// there may still be a delay before the CPU becomes free to once
+    /// again execute the calling thread.
+    /// For times less than about 450 microseconds, uses a busy wait on the System Timer.
+    /// It is reported that a delay of 0 microseconds on RaspberryPi will in fact
+    /// result in a delay of about 80 microseconds. Your mileage may vary.
+    /// \param[in] micros Delay in microseconds
+    extern void bcm2835_delayMicroseconds (uint64_t micros);
+
+    /// Sets the output state of the specified pin
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    /// \param[in] on HIGH sets the output to HIGH and LOW to LOW.
+    extern void bcm2835_gpio_write(uint8_t pin, uint8_t on);
+
+    /// Sets any of the first 32 GPIO output pins specified in the mask to the state given by on
+    /// \param[in] mask Mask of pins to affect. Use eg: (1 << RPI_GPIO_P1_03) | (1 << RPI_GPIO_P1_05)
+    /// \param[in] on HIGH sets the output to HIGH and LOW to LOW.
+    extern void bcm2835_gpio_write_multi(uint32_t mask, uint8_t on);
+
+    /// Sets the first 32 GPIO output pins specified in the mask to the value given by value
+    /// \param[in] value values required for each bit masked in by mask, eg: (1 << RPI_GPIO_P1_03) | (1 << RPI_GPIO_P1_05)
+    /// \param[in] mask Mask of pins to affect. Use eg: (1 << RPI_GPIO_P1_03) | (1 << RPI_GPIO_P1_05)
+    extern void bcm2835_gpio_write_mask(uint32_t value, uint32_t mask);
+
+    /// Sets the Pull-up/down mode for the specified pin. This is more convenient than
+    /// clocking the mode in with bcm2835_gpio_pud() and bcm2835_gpio_pudclk().
+    /// \param[in] pin GPIO number, or one of RPI_GPIO_P1_* from \ref RPiGPIOPin.
+    /// \param[in] pud The desired Pull-up/down mode. One of BCM2835_GPIO_PUD_* from bcm2835PUDControl
+    extern void bcm2835_gpio_set_pud(uint8_t pin, uint8_t pud);
+
+    /// @} 
+
+    /// \defgroup spi SPI access
+    /// These functions let you use SPI0 (Serial Peripheral Interface) to 
+    /// interface with an external SPI device.
+    /// @{
+
+    /// Start SPI operations.
+    /// Forces RPi SPI0 pins P1-19 (MOSI), P1-21 (MISO), P1-23 (CLK), P1-24 (CE0) and P1-26 (CE1)
+    /// to alternate function ALT0, which enables those pins for SPI interface.
+    /// You should call bcm2835_spi_end() when all SPI funcitons are complete to return the pins to 
+    /// their default functions
+    /// \sa  bcm2835_spi_end()
+    extern void bcm2835_spi_begin(void);
+
+    /// End SPI operations.
+    /// SPI0 pins P1-19 (MOSI), P1-21 (MISO), P1-23 (CLK), P1-24 (CE0) and P1-26 (CE1)
+    /// are returned to their default INPUT behaviour.
+    extern void bcm2835_spi_end(void);
+
+    /// Sets the SPI bit order
+    /// NOTE: has no effect. Not supported by SPI0.
+    /// Defaults to 
+    /// \param[in] order The desired bit order, one of BCM2835_SPI_BIT_ORDER_*, 
+    /// see \ref bcm2835SPIBitOrder
+    extern void bcm2835_spi_setBitOrder(uint8_t order);
+
+    /// Sets the SPI clock divider and therefore the 
+    /// SPI clock speed. 
+    /// \param[in] divider The desired SPI clock divider, one of BCM2835_SPI_CLOCK_DIVIDER_*, 
+    /// see \ref bcm2835SPIClockDivider
+    extern void bcm2835_spi_setClockDivider(uint16_t divider);
+
+    /// Sets the SPI data mode
+    /// Sets the clock polariy and phase
+    /// \param[in] mode The desired data mode, one of BCM2835_SPI_MODE*, 
+    /// see \ref bcm2835SPIMode
+    extern void bcm2835_spi_setDataMode(uint8_t mode);
+
+    /// Sets the chip select pin(s)
+    /// When an bcm2835_spi_transfer() is made, the selected pin(s) will be asserted during the
+    /// transfer.
+    /// \param[in] cs Specifies the CS pins(s) that are used to activate the desired slave. 
+    ///   One of BCM2835_SPI_CS*, see \ref bcm2835SPIChipSelect
+    extern void bcm2835_spi_chipSelect(uint8_t cs);
+
+    /// Sets the chip select pin polarity for a given pin
+    /// When an bcm2835_spi_transfer() occurs, the currently selected chip select pin(s) 
+    /// will be asserted to the 
+    /// value given by active. When transfers are not happening, the chip select pin(s) 
+    /// return to the complement (inactive) value.
+    /// \param[in] cs The chip select pin to affect
+    /// \param[in] active Whether the chip select pin is to be active HIGH
+    extern void bcm2835_spi_setChipSelectPolarity(uint8_t cs, uint8_t active);
+
+    /// Transfers one byte to and from the currently selected SPI slave.
+    /// Asserts the currently selected CS pins (as previously set by bcm2835_spi_chipSelect) 
+    /// during the transfer.
+    /// Clocks the 8 bit value out on MOSI, and simultaneously clocks in data from MISO. 
+    /// Returns the read data byte from the slave.
+    /// Uses polled transfer as per section 10.6.1 of the BCM 2835 ARM Peripherls manual
+    /// \param[in] value The 8 bit data byte to write to MOSI
+    /// \return The 8 bit byte simultaneously read from  MISO
+    /// \sa bcm2835_spi_transfern()
+    extern uint8_t bcm2835_spi_transfer(uint8_t value);
+    
+    /// Transfers any number of bytes to and from the currently selected SPI slave.
+    /// Asserts the currently selected CS pins (as previously set by bcm2835_spi_chipSelect) 
+    /// during the transfer.
+    /// Clocks the len 8 bit bytes out on MOSI, and simultaneously clocks in data from MISO. 
+    /// The data read read from the slave is placed into rbuf. rbuf must be at least len bytes long
+    /// Uses polled transfer as per section 10.6.1 of the BCM 2835 ARM Peripherls manual
+    /// \param[in] tbuf Buffer of bytes to send. 
+    /// \param[out] rbuf Received bytes will by put in this buffer
+    /// \param[in] len Number of bytes in the tbuf buffer, and the number of bytes to send/received
+    /// \sa bcm2835_spi_transfer()
+    extern void bcm2835_spi_transfernb(char* tbuf, char* rbuf, uint32_t len);
+
+    /// Transfers any number of bytes to and from the currently selected SPI slave
+    /// using bcm2835_spi_transfernb.
+    /// The returned data from the slave replaces the transmitted data in the buffer.
+    /// \param[in,out] buf Buffer of bytes to send. Received bytes will replace the contents
+    /// \param[in] len Number of bytes int eh buffer, and the number of bytes to send/received
+    /// \sa bcm2835_spi_transfer()
+    extern void bcm2835_spi_transfern(char* buf, uint32_t len);
+
+    /// Transfers any number of bytes to the currently selected SPI slave.
+    /// Asserts the currently selected CS pins (as previously set by bcm2835_spi_chipSelect)
+    /// during the transfer.
+    /// \param[in] buf Buffer of bytes to send.
+    /// \param[in] len Number of bytes in the tbuf buffer, and the number of bytes to send
+    extern void bcm2835_spi_writenb(char* buf, uint32_t len);
+
+    /// @}
+
+    /// \defgroup i2c I2C access
+    /// These functions let you use I2C (The Broadcom Serial Control bus with the Philips
+    /// I2C bus/interface version 2.1 January 2000.) to interface with an external I2C device.
+    /// @{
+
+    /// Start I2C operations.
+    /// Forces RPi I2C pins P1-03 (SDA) and P1-05 (SCL)
+    /// to alternate function ALT0, which enables those pins for I2C interface.
+    /// You should call bcm2835_i2c_end() when all I2C functions are complete to return the pins to
+    /// their default functions
+    /// \sa  bcm2835_i2c_end()
+    extern void bcm2835_i2c_begin(void);
+
+    /// End I2C operations.
+    /// I2C pins P1-03 (SDA) and P1-05 (SCL)
+    /// are returned to their default INPUT behaviour.
+    extern void bcm2835_i2c_end(void);
+
+    /// Sets the I2C slave address.
+    /// \param[in] addr The I2C slave address.
+    extern void bcm2835_i2c_setSlaveAddress(uint8_t addr);
+
+    /// Sets the I2C clock divider and therefore the I2C clock speed.
+    /// \param[in] divider The desired I2C clock divider, one of BCM2835_I2C_CLOCK_DIVIDER_*,
+    /// see \ref bcm2835I2CClockDivider
+    extern void bcm2835_i2c_setClockDivider(uint16_t divider);
+
+    /// Sets the I2C clock divider by converting the baudrate parameter to
+    /// the equivalent I2C clock divider. ( see \sa bcm2835_i2c_setClockDivider)
+    /// For the I2C standard 100khz you would set baudrate to 100000
+    /// The use of baudrate corresponds to its use in the I2C kernel device
+    /// driver. (Of course, bcm2835 has nothing to do with the kernel driver)
+    extern void bcm2835_i2c_set_baudrate(uint32_t baudrate);
+
+    /// Transfers any number of bytes to the currently selected I2C slave.
+    /// (as previously set by \sa bcm2835_i2c_setSlaveAddress)
+    /// \param[in] buf Buffer of bytes to send.
+    /// \param[in] len Number of bytes in the buf buffer, and the number of bytes to send.
+	/// \return reason see \ref bcm2835I2CReasonCodes
+    extern uint8_t bcm2835_i2c_write(const char * buf, uint32_t len);
+
+    /// Transfers any number of bytes from the currently selected I2C slave.
+    /// (as previously set by \sa bcm2835_i2c_setSlaveAddress)
+    /// \param[in] buf Buffer of bytes to receive.
+    /// \param[in] len Number of bytes in the buf buffer, and the number of bytes to received.
+	/// \return reason see \ref bcm2835I2CReasonCodes
+    extern uint8_t bcm2835_i2c_read(char* buf, uint32_t len);
+
+    /// Allows reading from I2C slaves that require a repeated start (without any prior stop)
+    /// to read after the required slave register has been set. For example, the popular
+    /// MPL3115A2 pressure and temperature sensor. Note that your device must support or
+    /// require this mode. If your device does not require this mode then the standard
+    /// combined:
+    ///   \sa bcm2835_i2c_write
+    ///   \sa bcm2835_i2c_read
+    /// are a better choice.
+    /// Will read from the slave previously set by \sa bcm2835_i2c_setSlaveAddress
+    /// \param[in] regaddr Buffer containing the slave register you wish to read from.
+    /// \param[in] buf Buffer of bytes to receive.
+    /// \param[in] len Number of bytes in the buf buffer, and the number of bytes to received.
+	/// \return reason see \ref bcm2835I2CReasonCodes
+    extern uint8_t bcm2835_i2c_read_register_rs(char* regaddr, char* buf, uint32_t len);
+
+    /// @}
+
+    /// \defgroup st System Timer access
+    /// Allows access to and delays using the System Timer Counter.
+    /// @{
+
+    /// Read the System Timer Counter register.
+    /// \return the value read from the System Timer Counter Lower 32 bits register
+    uint64_t bcm2835_st_read(void);
+
+    /// Delays for the specified number of microseconds with offset.
+    /// \param[in] offset_micros Offset in microseconds
+    /// \param[in] micros Delay in microseconds
+    extern void bcm2835_st_delay(uint64_t offset_micros, uint64_t micros);
+
+    /// @} 
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // BCM2835_H
+
+/// @example blink.c
+/// Blinks RPi GPIO pin 11 on and off
+
+/// @example input.c
+/// Reads the state of an RPi input pin
+
+/// @example event.c
+/// Shows how to use event detection on an input pin
+
+/// @example spi.c
+/// Shows how to use SPI interface to transfer a byte to and from an SPI device
+
+/// @example spin.c
+/// Shows how to use SPI interface to transfer a number of bytes to and from an SPI device
diff --git a/samples/C++/epoll_reactor.ipp b/samples/C++/epoll_reactor.ipp
new file mode 100644
index 00000000..5d592aff
--- /dev/null
+++ b/samples/C++/epoll_reactor.ipp
@@ -0,0 +1,664 @@
+//
+// detail/impl/epoll_reactor.ipp
+// ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+//
+// Copyright (c) 2003-2013 Christopher M. Kohlhoff (chris at kohlhoff dot com)
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef BOOST_ASIO_DETAIL_IMPL_EPOLL_REACTOR_IPP
+#define BOOST_ASIO_DETAIL_IMPL_EPOLL_REACTOR_IPP
+
+#if defined(_MSC_VER) && (_MSC_VER >= 1200)
+# pragma once
+#endif // defined(_MSC_VER) && (_MSC_VER >= 1200)
+
+#include <boost/asio/detail/config.hpp>
+
+#if defined(BOOST_ASIO_HAS_EPOLL)
+
+#include <cstddef>
+#include <sys/epoll.h>
+#include <boost/asio/detail/epoll_reactor.hpp>
+#include <boost/asio/detail/throw_error.hpp>
+#include <boost/asio/error.hpp>
+
+#if defined(BOOST_ASIO_HAS_TIMERFD)
+# include <sys/timerfd.h>
+#endif // defined(BOOST_ASIO_HAS_TIMERFD)
+
+#include <boost/asio/detail/push_options.hpp>
+
+namespace boost {
+namespace asio {
+namespace detail {
+
+epoll_reactor::epoll_reactor(boost::asio::io_service& io_service)
+  : boost::asio::detail::service_base<epoll_reactor>(io_service),
+    io_service_(use_service<io_service_impl>(io_service)),
+    mutex_(),
+    interrupter_(),
+    epoll_fd_(do_epoll_create()),
+    timer_fd_(do_timerfd_create()),
+    shutdown_(false)
+{
+  // Add the interrupter's descriptor to epoll.
+  epoll_event ev = { 0, { 0 } };
+  ev.events = EPOLLIN | EPOLLERR | EPOLLET;
+  ev.data.ptr = &interrupter_;
+  epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, interrupter_.read_descriptor(), &ev);
+  interrupter_.interrupt();
+
+  // Add the timer descriptor to epoll.
+  if (timer_fd_ != -1)
+  {
+    ev.events = EPOLLIN | EPOLLERR;
+    ev.data.ptr = &timer_fd_;
+    epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, timer_fd_, &ev);
+  }
+}
+
+epoll_reactor::~epoll_reactor()
+{
+  if (epoll_fd_ != -1)
+    close(epoll_fd_);
+  if (timer_fd_ != -1)
+    close(timer_fd_);
+}
+
+void epoll_reactor::shutdown_service()
+{
+  mutex::scoped_lock lock(mutex_);
+  shutdown_ = true;
+  lock.unlock();
+
+  op_queue<operation> ops;
+
+  while (descriptor_state* state = registered_descriptors_.first())
+  {
+    for (int i = 0; i < max_ops; ++i)
+      ops.push(state->op_queue_[i]);
+    state->shutdown_ = true;
+    registered_descriptors_.free(state);
+  }
+
+  timer_queues_.get_all_timers(ops);
+
+  io_service_.abandon_operations(ops);
+}
+
+void epoll_reactor::fork_service(boost::asio::io_service::fork_event fork_ev)
+{
+  if (fork_ev == boost::asio::io_service::fork_child)
+  {
+    if (epoll_fd_ != -1)
+      ::close(epoll_fd_);
+    epoll_fd_ = -1;
+    epoll_fd_ = do_epoll_create();
+
+    if (timer_fd_ != -1)
+      ::close(timer_fd_);
+    timer_fd_ = -1;
+    timer_fd_ = do_timerfd_create();
+
+    interrupter_.recreate();
+
+    // Add the interrupter's descriptor to epoll.
+    epoll_event ev = { 0, { 0 } };
+    ev.events = EPOLLIN | EPOLLERR | EPOLLET;
+    ev.data.ptr = &interrupter_;
+    epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, interrupter_.read_descriptor(), &ev);
+    interrupter_.interrupt();
+
+    // Add the timer descriptor to epoll.
+    if (timer_fd_ != -1)
+    {
+      ev.events = EPOLLIN | EPOLLERR;
+      ev.data.ptr = &timer_fd_;
+      epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, timer_fd_, &ev);
+    }
+
+    update_timeout();
+
+    // Re-register all descriptors with epoll.
+    mutex::scoped_lock descriptors_lock(registered_descriptors_mutex_);
+    for (descriptor_state* state = registered_descriptors_.first();
+        state != 0; state = state->next_)
+    {
+      ev.events = state->registered_events_;
+      ev.data.ptr = state;
+      int result = epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, state->descriptor_, &ev);
+      if (result != 0)
+      {
+        boost::system::error_code ec(errno,
+            boost::asio::error::get_system_category());
+        boost::asio::detail::throw_error(ec, "epoll re-registration");
+      }
+    }
+  }
+}
+
+void epoll_reactor::init_task()
+{
+  io_service_.init_task();
+}
+
+int epoll_reactor::register_descriptor(socket_type descriptor,
+    epoll_reactor::per_descriptor_data& descriptor_data)
+{
+  descriptor_data = allocate_descriptor_state();
+
+  {
+    mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
+
+    descriptor_data->reactor_ = this;
+    descriptor_data->descriptor_ = descriptor;
+    descriptor_data->shutdown_ = false;
+  }
+
+  epoll_event ev = { 0, { 0 } };
+  ev.events = EPOLLIN | EPOLLERR | EPOLLHUP | EPOLLPRI | EPOLLET;
+  descriptor_data->registered_events_ = ev.events;
+  ev.data.ptr = descriptor_data;
+  int result = epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, descriptor, &ev);
+  if (result != 0)
+    return errno;
+
+  return 0;
+}
+
+int epoll_reactor::register_internal_descriptor(
+    int op_type, socket_type descriptor,
+    epoll_reactor::per_descriptor_data& descriptor_data, reactor_op* op)
+{
+  descriptor_data = allocate_descriptor_state();
+
+  {
+    mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
+
+    descriptor_data->reactor_ = this;
+    descriptor_data->descriptor_ = descriptor;
+    descriptor_data->shutdown_ = false;
+    descriptor_data->op_queue_[op_type].push(op);
+  }
+
+  epoll_event ev = { 0, { 0 } };
+  ev.events = EPOLLIN | EPOLLERR | EPOLLHUP | EPOLLPRI | EPOLLET;
+  descriptor_data->registered_events_ = ev.events;
+  ev.data.ptr = descriptor_data;
+  int result = epoll_ctl(epoll_fd_, EPOLL_CTL_ADD, descriptor, &ev);
+  if (result != 0)
+    return errno;
+
+  return 0;
+}
+
+void epoll_reactor::move_descriptor(socket_type,
+    epoll_reactor::per_descriptor_data& target_descriptor_data,
+    epoll_reactor::per_descriptor_data& source_descriptor_data)
+{
+  target_descriptor_data = source_descriptor_data;
+  source_descriptor_data = 0;
+}
+
+void epoll_reactor::start_op(int op_type, socket_type descriptor,
+    epoll_reactor::per_descriptor_data& descriptor_data, reactor_op* op,
+    bool is_continuation, bool allow_speculative)
+{
+  if (!descriptor_data)
+  {
+    op->ec_ = boost::asio::error::bad_descriptor;
+    post_immediate_completion(op, is_continuation);
+    return;
+  }
+
+  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
+
+  if (descriptor_data->shutdown_)
+  {
+    post_immediate_completion(op, is_continuation);
+    return;
+  }
+
+  if (descriptor_data->op_queue_[op_type].empty())
+  {
+    if (allow_speculative
+        && (op_type != read_op
+          || descriptor_data->op_queue_[except_op].empty()))
+    {
+      if (op->perform())
+      {
+        descriptor_lock.unlock();
+        io_service_.post_immediate_completion(op, is_continuation);
+        return;
+      }
+
+      if (op_type == write_op)
+      {
+        if ((descriptor_data->registered_events_ & EPOLLOUT) == 0)
+        {
+          epoll_event ev = { 0, { 0 } };
+          ev.events = descriptor_data->registered_events_ | EPOLLOUT;
+          ev.data.ptr = descriptor_data;
+          if (epoll_ctl(epoll_fd_, EPOLL_CTL_MOD, descriptor, &ev) == 0)
+          {
+            descriptor_data->registered_events_ |= ev.events;
+          }
+          else
+          {
+            op->ec_ = boost::system::error_code(errno,
+                boost::asio::error::get_system_category());
+            io_service_.post_immediate_completion(op, is_continuation);
+            return;
+          }
+        }
+      }
+    }
+    else
+    {
+      if (op_type == write_op)
+      {
+        descriptor_data->registered_events_ |= EPOLLOUT;
+      }
+
+      epoll_event ev = { 0, { 0 } };
+      ev.events = descriptor_data->registered_events_;
+      ev.data.ptr = descriptor_data;
+      epoll_ctl(epoll_fd_, EPOLL_CTL_MOD, descriptor, &ev);
+    }
+  }
+
+  descriptor_data->op_queue_[op_type].push(op);
+  io_service_.work_started();
+}
+
+void epoll_reactor::cancel_ops(socket_type,
+    epoll_reactor::per_descriptor_data& descriptor_data)
+{
+  if (!descriptor_data)
+    return;
+
+  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
+
+  op_queue<operation> ops;
+  for (int i = 0; i < max_ops; ++i)
+  {
+    while (reactor_op* op = descriptor_data->op_queue_[i].front())
+    {
+      op->ec_ = boost::asio::error::operation_aborted;
+      descriptor_data->op_queue_[i].pop();
+      ops.push(op);
+    }
+  }
+
+  descriptor_lock.unlock();
+
+  io_service_.post_deferred_completions(ops);
+}
+
+void epoll_reactor::deregister_descriptor(socket_type descriptor,
+    epoll_reactor::per_descriptor_data& descriptor_data, bool closing)
+{
+  if (!descriptor_data)
+    return;
+
+  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
+
+  if (!descriptor_data->shutdown_)
+  {
+    if (closing)
+    {
+      // The descriptor will be automatically removed from the epoll set when
+      // it is closed.
+    }
+    else
+    {
+      epoll_event ev = { 0, { 0 } };
+      epoll_ctl(epoll_fd_, EPOLL_CTL_DEL, descriptor, &ev);
+    }
+
+    op_queue<operation> ops;
+    for (int i = 0; i < max_ops; ++i)
+    {
+      while (reactor_op* op = descriptor_data->op_queue_[i].front())
+      {
+        op->ec_ = boost::asio::error::operation_aborted;
+        descriptor_data->op_queue_[i].pop();
+        ops.push(op);
+      }
+    }
+
+    descriptor_data->descriptor_ = -1;
+    descriptor_data->shutdown_ = true;
+
+    descriptor_lock.unlock();
+
+    free_descriptor_state(descriptor_data);
+    descriptor_data = 0;
+
+    io_service_.post_deferred_completions(ops);
+  }
+}
+
+void epoll_reactor::deregister_internal_descriptor(socket_type descriptor,
+    epoll_reactor::per_descriptor_data& descriptor_data)
+{
+  if (!descriptor_data)
+    return;
+
+  mutex::scoped_lock descriptor_lock(descriptor_data->mutex_);
+
+  if (!descriptor_data->shutdown_)
+  {
+    epoll_event ev = { 0, { 0 } };
+    epoll_ctl(epoll_fd_, EPOLL_CTL_DEL, descriptor, &ev);
+
+    op_queue<operation> ops;
+    for (int i = 0; i < max_ops; ++i)
+      ops.push(descriptor_data->op_queue_[i]);
+
+    descriptor_data->descriptor_ = -1;
+    descriptor_data->shutdown_ = true;
+
+    descriptor_lock.unlock();
+
+    free_descriptor_state(descriptor_data);
+    descriptor_data = 0;
+  }
+}
+
+void epoll_reactor::run(bool block, op_queue<operation>& ops)
+{
+  // This code relies on the fact that the task_io_service queues the reactor
+  // task behind all descriptor operations generated by this function. This
+  // means, that by the time we reach this point, any previously returned
+  // descriptor operations have already been dequeued. Therefore it is now safe
+  // for us to reuse and return them for the task_io_service to queue again.
+
+  // Calculate a timeout only if timerfd is not used.
+  int timeout;
+  if (timer_fd_ != -1)
+    timeout = block ? -1 : 0;
+  else
+  {
+    mutex::scoped_lock lock(mutex_);
+    timeout = block ? get_timeout() : 0;
+  }
+
+  // Block on the epoll descriptor.
+  epoll_event events[128];
+  int num_events = epoll_wait(epoll_fd_, events, 128, timeout);
+
+#if defined(BOOST_ASIO_HAS_TIMERFD)
+  bool check_timers = (timer_fd_ == -1);
+#else // defined(BOOST_ASIO_HAS_TIMERFD)
+  bool check_timers = true;
+#endif // defined(BOOST_ASIO_HAS_TIMERFD)
+
+  // Dispatch the waiting events.
+  for (int i = 0; i < num_events; ++i)
+  {
+    void* ptr = events[i].data.ptr;
+    if (ptr == &interrupter_)
+    {
+      // No need to reset the interrupter since we're leaving the descriptor
+      // in a ready-to-read state and relying on edge-triggered notifications
+      // to make it so that we only get woken up when the descriptor's epoll
+      // registration is updated.
+
+#if defined(BOOST_ASIO_HAS_TIMERFD)
+      if (timer_fd_ == -1)
+        check_timers = true;
+#else // defined(BOOST_ASIO_HAS_TIMERFD)
+      check_timers = true;
+#endif // defined(BOOST_ASIO_HAS_TIMERFD)
+    }
+#if defined(BOOST_ASIO_HAS_TIMERFD)
+    else if (ptr == &timer_fd_)
+    {
+      check_timers = true;
+    }
+#endif // defined(BOOST_ASIO_HAS_TIMERFD)
+    else
+    {
+      // The descriptor operation doesn't count as work in and of itself, so we
+      // don't call work_started() here. This still allows the io_service to
+      // stop if the only remaining operations are descriptor operations.
+      descriptor_state* descriptor_data = static_cast<descriptor_state*>(ptr);
+      descriptor_data->set_ready_events(events[i].events);
+      ops.push(descriptor_data);
+    }
+  }
+
+  if (check_timers)
+  {
+    mutex::scoped_lock common_lock(mutex_);
+    timer_queues_.get_ready_timers(ops);
+
+#if defined(BOOST_ASIO_HAS_TIMERFD)
+    if (timer_fd_ != -1)
+    {
+      itimerspec new_timeout;
+      itimerspec old_timeout;
+      int flags = get_timeout(new_timeout);
+      timerfd_settime(timer_fd_, flags, &new_timeout, &old_timeout);
+    }
+#endif // defined(BOOST_ASIO_HAS_TIMERFD)
+  }
+}
+
+void epoll_reactor::interrupt()
+{
+  epoll_event ev = { 0, { 0 } };
+  ev.events = EPOLLIN | EPOLLERR | EPOLLET;
+  ev.data.ptr = &interrupter_;
+  epoll_ctl(epoll_fd_, EPOLL_CTL_MOD, interrupter_.read_descriptor(), &ev);
+}
+
+int epoll_reactor::do_epoll_create()
+{
+#if defined(EPOLL_CLOEXEC)
+  int fd = epoll_create1(EPOLL_CLOEXEC);
+#else // defined(EPOLL_CLOEXEC)
+  int fd = -1;
+  errno = EINVAL;
+#endif // defined(EPOLL_CLOEXEC)
+
+  if (fd == -1 && (errno == EINVAL || errno == ENOSYS))
+  {
+    fd = epoll_create(epoll_size);
+    if (fd != -1)
+      ::fcntl(fd, F_SETFD, FD_CLOEXEC);
+  }
+
+  if (fd == -1)
+  {
+    boost::system::error_code ec(errno,
+        boost::asio::error::get_system_category());
+    boost::asio::detail::throw_error(ec, "epoll");
+  }
+
+  return fd;
+}
+
+int epoll_reactor::do_timerfd_create()
+{
+#if defined(BOOST_ASIO_HAS_TIMERFD)
+# if defined(TFD_CLOEXEC)
+  int fd = timerfd_create(CLOCK_MONOTONIC, TFD_CLOEXEC);
+# else // defined(TFD_CLOEXEC)
+  int fd = -1;
+  errno = EINVAL;
+# endif // defined(TFD_CLOEXEC)
+
+  if (fd == -1 && errno == EINVAL)
+  {
+    fd = timerfd_create(CLOCK_MONOTONIC, 0);
+    if (fd != -1)
+      ::fcntl(fd, F_SETFD, FD_CLOEXEC);
+  }
+
+  return fd;
+#else // defined(BOOST_ASIO_HAS_TIMERFD)
+  return -1;
+#endif // defined(BOOST_ASIO_HAS_TIMERFD)
+}
+
+epoll_reactor::descriptor_state* epoll_reactor::allocate_descriptor_state()
+{
+  mutex::scoped_lock descriptors_lock(registered_descriptors_mutex_);
+  return registered_descriptors_.alloc();
+}
+
+void epoll_reactor::free_descriptor_state(epoll_reactor::descriptor_state* s)
+{
+  mutex::scoped_lock descriptors_lock(registered_descriptors_mutex_);
+  registered_descriptors_.free(s);
+}
+
+void epoll_reactor::do_add_timer_queue(timer_queue_base& queue)
+{
+  mutex::scoped_lock lock(mutex_);
+  timer_queues_.insert(&queue);
+}
+
+void epoll_reactor::do_remove_timer_queue(timer_queue_base& queue)
+{
+  mutex::scoped_lock lock(mutex_);
+  timer_queues_.erase(&queue);
+}
+
+void epoll_reactor::update_timeout()
+{
+#if defined(BOOST_ASIO_HAS_TIMERFD)
+  if (timer_fd_ != -1)
+  {
+    itimerspec new_timeout;
+    itimerspec old_timeout;
+    int flags = get_timeout(new_timeout);
+    timerfd_settime(timer_fd_, flags, &new_timeout, &old_timeout);
+    return;
+  }
+#endif // defined(BOOST_ASIO_HAS_TIMERFD)
+  interrupt();
+}
+
+int epoll_reactor::get_timeout()
+{
+  // By default we will wait no longer than 5 minutes. This will ensure that
+  // any changes to the system clock are detected after no longer than this.
+  return timer_queues_.wait_duration_msec(5 * 60 * 1000);
+}
+
+#if defined(BOOST_ASIO_HAS_TIMERFD)
+int epoll_reactor::get_timeout(itimerspec& ts)
+{
+  ts.it_interval.tv_sec = 0;
+  ts.it_interval.tv_nsec = 0;
+
+  long usec = timer_queues_.wait_duration_usec(5 * 60 * 1000 * 1000);
+  ts.it_value.tv_sec = usec / 1000000;
+  ts.it_value.tv_nsec = usec ? (usec % 1000000) * 1000 : 1;
+
+  return usec ? 0 : TFD_TIMER_ABSTIME;
+}
+#endif // defined(BOOST_ASIO_HAS_TIMERFD)
+
+struct epoll_reactor::perform_io_cleanup_on_block_exit
+{
+  explicit perform_io_cleanup_on_block_exit(epoll_reactor* r)
+    : reactor_(r), first_op_(0)
+  {
+  }
+
+  ~perform_io_cleanup_on_block_exit()
+  {
+    if (first_op_)
+    {
+      // Post the remaining completed operations for invocation.
+      if (!ops_.empty())
+        reactor_->io_service_.post_deferred_completions(ops_);
+
+      // A user-initiated operation has completed, but there's no need to
+      // explicitly call work_finished() here. Instead, we'll take advantage of
+      // the fact that the task_io_service will call work_finished() once we
+      // return.
+    }
+    else
+    {
+      // No user-initiated operations have completed, so we need to compensate
+      // for the work_finished() call that the task_io_service will make once
+      // this operation returns.
+      reactor_->io_service_.work_started();
+    }
+  }
+
+  epoll_reactor* reactor_;
+  op_queue<operation> ops_;
+  operation* first_op_;
+};
+
+epoll_reactor::descriptor_state::descriptor_state()
+  : operation(&epoll_reactor::descriptor_state::do_complete)
+{
+}
+
+operation* epoll_reactor::descriptor_state::perform_io(uint32_t events)
+{
+  mutex_.lock();
+  perform_io_cleanup_on_block_exit io_cleanup(reactor_);
+  mutex::scoped_lock descriptor_lock(mutex_, mutex::scoped_lock::adopt_lock);
+
+  // Exception operations must be processed first to ensure that any
+  // out-of-band data is read before normal data.
+  static const int flag[max_ops] = { EPOLLIN, EPOLLOUT, EPOLLPRI };
+  for (int j = max_ops - 1; j >= 0; --j)
+  {
+    if (events & (flag[j] | EPOLLERR | EPOLLHUP))
+    {
+      while (reactor_op* op = op_queue_[j].front())
+      {
+        if (op->perform())
+        {
+          op_queue_[j].pop();
+          io_cleanup.ops_.push(op);
+        }
+        else
+          break;
+      }
+    }
+  }
+
+  // The first operation will be returned for completion now. The others will
+  // be posted for later by the io_cleanup object's destructor.
+  io_cleanup.first_op_ = io_cleanup.ops_.front();
+  io_cleanup.ops_.pop();
+  return io_cleanup.first_op_;
+}
+
+void epoll_reactor::descriptor_state::do_complete(
+    io_service_impl* owner, operation* base,
+    const boost::system::error_code& ec, std::size_t bytes_transferred)
+{
+  if (owner)
+  {
+    descriptor_state* descriptor_data = static_cast<descriptor_state*>(base);
+    uint32_t events = static_cast<uint32_t>(bytes_transferred);
+    if (operation* op = descriptor_data->perform_io(events))
+    {
+      op->complete(*owner, ec, 0);
+    }
+  }
+}
+
+} // namespace detail
+} // namespace asio
+} // namespace boost
+
+#include <boost/asio/detail/pop_options.hpp>
+
+#endif // defined(BOOST_ASIO_HAS_EPOLL)
+
+#endif // BOOST_ASIO_DETAIL_IMPL_EPOLL_REACTOR_IPP
diff --git a/samples/C++/libcanister.h b/samples/C++/libcanister.h
new file mode 100644
index 00000000..b7d82a52
--- /dev/null
+++ b/samples/C++/libcanister.h
@@ -0,0 +1,138 @@
+#ifndef LIBCANIH
+#define LIBCANIH
+#include <iostream>
+#include <fstream>
+#include <stdlib.h>
+#include <cstring>
+
+#define int64 unsigned long long
+//#define DEBUG
+
+#ifdef DEBUG
+#define dout cout
+#else
+#define dout if (0) cerr
+#endif
+
+using namespace std;
+
+namespace libcanister
+{
+
+    //the canmem object is a generic memory container used commonly
+    //throughout the canister framework to hold memory of uncertain
+    //length which may or may not contain null bytes. 
+    class canmem
+    {
+    public:
+        char* data; //the raw memory block
+        int size; //the absolute length of the block
+        canmem(); //creates an unallocated canmem
+        canmem(int allocsize); //creates an allocated, blank canmem of size
+        canmem(char* strdata); //automates the creation of zero-limited canmems
+        ~canmem(); //cleans up the canmem
+        void zeromem(); //overwrites this canmem
+        void fragmem(); //overwrites this canmem with fragment notation
+        void countlen(); //counts length of zero-limited strings and stores it in size
+        void trim(); //removes any nulls from the end of the string
+        static canmem null(); //returns a singleton null canmem
+        
+    };
+    
+    //contains information about the canister
+    class caninfo
+    {
+    public:
+        canmem path; //physical path
+        canmem internalname; //a name for the canister
+        int numfiles; //the number of files in the canister
+    };
+    
+    //necessary for the use of this class as a type in canfile
+    class canister;
+    
+    //this object holds the definition of a 'file' within the
+    //canister 'filesystem.'
+    class canfile
+    {
+    public:
+        libcanister::canister* parent; //the canister that holds this file
+        canmem path; //internal path ('filename')
+        canmem data; //the file's decompressed contents
+        int isfrag; //0 = probably not fragment, 1 = definitely a fragment (ignore)
+        int cfid; //'canfile id' -- a unique ID for this file
+        int64 dsize; //ondisk size (compressed form size)
+        int cachestate; //0 = not in memory, 1 = in memory, 2 = in memory and needs flush
+                        //-1 = error, check the data for the message
+        void cache(); //pull the file from disk and cache it in memory
+        void cachedump(); //deletes the contents of this file from the memory cache after assuring the on disk copy is up to date
+        void cachedumpfinal(fstream& infile); //same as cachedump, but more efficient during closing procedures
+        void flush(); //updates the on disk copy, but retains the memory cache
+    };
+
+    //the primary class
+    //this defines and controls a single canister
+    class canister
+    {
+        //table of contents
+        //absolutely worthless to the control code in the canister
+        //but quite useful to programs using the API, as they may
+        //desire to enumerate the files in a canister for a user's
+        //use or for their own.
+        //contains a newline-delimited list of files in the container.
+        canfile TOC;
+    public:
+        caninfo info; //the general info about this canister
+
+        //the raw canfiles -- recommended that programs do not modify
+        //these files directly, but not enforced.
+        canfile* files;
+        bool readonly; //if true then no write routines will do anything
+        
+        //maximum number of files to have in memory at any given
+        //time, change this to whatever suits your application.
+        int cachemax;
+        int cachecnt; //number of files in the cache (should not be modified)
+
+        //both initialize the canister from a physical location
+        canister (canmem fspath);
+        canister (char* fspath);
+
+        //destroys the canister (after flushing the modded buffers, of course)
+        ~canister();
+        
+        //open the fspath
+        //does it exist?
+        // | --- yes --- opening it (return 1)
+        // | --- yes --- file is corrupted, halting (return -1)
+        // | --- no  --- making a new one (return 0)
+        int open();
+        
+        //close the canister, flush all buffers, clean up
+        int close();
+        
+        //deletes the file at path inside this canister
+        int delFile(canmem path);
+        
+        //pulls the contents of the file from disk or memory and returns it as a file
+        canfile getFile(canmem path);
+        
+        //creates a file if it does not exist, otherwise overwrites
+        //returns whether operation succeeded
+        bool writeFile(canmem path, canmem data);
+        bool writeFile(canfile file);
+        
+        //get the 'table of contents', a file containing a newline delimited
+        //list of the file paths in the container which have contents
+        canfile getTOC();
+ 
+        //brings the cache back within the cachemax limit
+        //important: sCFID is the safe CFID
+        //(the CFID of the file we want to avoid uncaching)
+        //really just used internally, but it can't do any harm.
+        void cacheclean(int sCFID, bool dFlush = false);
+    };
+
+}
+
+#endif
\ No newline at end of file
diff --git a/samples/C++/metrics.h b/samples/C++/metrics.h
new file mode 100644
index 00000000..b6da859d
--- /dev/null
+++ b/samples/C++/metrics.h
@@ -0,0 +1,92 @@
+// Copyright 2011 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef NINJA_METRICS_H_
+#define NINJA_METRICS_H_
+
+#include <string>
+#include <vector>
+using namespace std;
+
+#include "util.h"  // For int64_t.
+
+/// The Metrics module is used for the debug mode that dumps timing stats of
+/// various actions.  To use, see METRIC_RECORD below.
+
+/// A single metrics we're tracking, like "depfile load time".
+struct Metric {
+  string name;
+  /// Number of times we've hit the code path.
+  int count;
+  /// Total time (in micros) we've spent on the code path.
+  int64_t sum;
+};
+
+
+/// A scoped object for recording a metric across the body of a function.
+/// Used by the METRIC_RECORD macro.
+struct ScopedMetric {
+  explicit ScopedMetric(Metric* metric);
+  ~ScopedMetric();
+
+private:
+  Metric* metric_;
+  /// Timestamp when the measurement started.
+  /// Value is platform-dependent.
+  int64_t start_;
+};
+
+/// The singleton that stores metrics and prints the report.
+struct Metrics {
+  Metric* NewMetric(const string& name);
+
+  /// Print a summary report to stdout.
+  void Report();
+
+private:
+  vector<Metric*> metrics_;
+};
+
+/// Get the current time as relative to some epoch.
+/// Epoch varies between platforms; only useful for measuring elapsed time.
+int64_t GetTimeMillis();
+
+/// A simple stopwatch which returns the time
+/// in seconds since Restart() was called.
+struct Stopwatch {
+ public:
+  Stopwatch() : started_(0) {}
+
+  /// Seconds since Restart() call.
+  double Elapsed() const {
+    return 1e-6 * static_cast<double>(Now() - started_);
+  }
+
+  void Restart() { started_ = Now(); }
+
+ private:
+  uint64_t started_;
+  uint64_t Now() const;
+};
+
+/// The primary interface to metrics.  Use METRIC_RECORD("foobar") at the top
+/// of a function to get timing stats recorded for each call of the function.
+#define METRIC_RECORD(name)                                             \
+  static Metric* metrics_h_metric =                                     \
+      g_metrics ? g_metrics->NewMetric(name) : NULL;                    \
+  ScopedMetric metrics_h_scoped(metrics_h_metric);
+
+extern Metrics* g_metrics;
+
+#endif // NINJA_METRICS_H_
diff --git a/samples/C++/render_adapter.cpp b/samples/C++/render_adapter.cpp
new file mode 100644
index 00000000..4a18f6f6
--- /dev/null
+++ b/samples/C++/render_adapter.cpp
@@ -0,0 +1,6 @@
+#include <cstdint>
+
+namespace Gui
+{
+
+}
diff --git a/samples/C++/rpc.h b/samples/C++/rpc.h
new file mode 100644
index 00000000..ce810992
--- /dev/null
+++ b/samples/C++/rpc.h
@@ -0,0 +1,26 @@
+// Copyright (C) 2013 Simon Que
+//
+// This file is part of DuinoCube.
+//
+// DuinoCube is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// DuinoCube is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with DuinoCube.  If not, see <http://www.gnu.org/licenses/>.
+
+// DuinoCube remote procedure call functions.
+
+#include <stdint.h>
+
+// Initializes RPC system.
+void rpc_init();
+
+// Runs the RPC server loop forever.
+void rpc_server_loop();
diff --git a/samples/C/bootstrap.h b/samples/C/bootstrap.h
new file mode 100644
index 00000000..8c29de82
--- /dev/null
+++ b/samples/C/bootstrap.h
@@ -0,0 +1,102 @@
+#ifndef BOOTSTRAP_H
+#define BOOTSTRAP_H
+
+#include <stdio.h>
+#include "cxrs.h"
+
+/* If we're not using GNU C, elide __attribute__ */
+#ifndef __GNUC__
+#  define  __attribute__(x)  /*NOTHING*/
+#endif
+
+typedef struct object object;
+
+object *true;
+object *false;
+object *eof;
+object *empty_list;
+object *global_enviroment;
+
+enum obj_type {
+        scm_bool,
+        scm_empty_list,
+        scm_eof,
+        scm_char,
+        scm_int,
+        scm_pair,
+        scm_symbol,
+        scm_prim_fun,
+        scm_lambda,
+        scm_str,
+        scm_file
+};
+
+typedef object *(*prim_proc)(object *args);
+
+object *read(FILE *in);
+object *eval(object *code, object *env);
+void print(FILE *out, object *obj, int display);
+
+int check_type(enum obj_type type, object *obj, int err_on_false);
+
+static inline int is_true(object *obj)
+{
+        return obj != false;
+}
+
+object *make_int(int value);
+int obj2int(object *i);
+
+object *make_bool(int value);
+int obj2bool(object *b);
+
+object *make_char(char c);
+char obj2char(object *ch);
+
+object *make_str(char *str);
+char *obj2str(object *str);
+
+object *cons(object *car, object *cdr);
+object *car(object *pair);
+object *cdr(object *pair);
+void set_car(object *pair, object *new);
+void set_cdr(object *pair, object *new);
+
+object *make_symbol(char *name);
+char *sym2str(object *sym);
+object *get_symbol(char *name) __attribute__((pure));
+
+object *make_prim_fun(prim_proc fun);
+prim_proc obj2prim_proc(object *proc);
+
+object *make_lambda(object *args, object *code, object *env);
+object *lambda_code(object *lambda);
+object *lambda_args(object *lambda);
+
+object *make_port(FILE *handle, int direction);
+int port_direction(object *port);
+FILE *port_handle(object *port);
+void set_port_handle_to_null(object *port);
+
+/*both of these should never be called*/
+object *apply_proc(object *);
+object *eval_proc(object *);
+
+
+object *maybe_add_begin(object *code);
+
+void init_enviroment(object *env);
+
+
+void eval_err(char *msg, object *code) __attribute__((noreturn));
+
+void define_var(object *var, object *val, object *env);
+void set_var(object *var, object *val, object *env);
+object *get_var(object *var, object *env);
+
+object *cond2nested_if(object *cond);
+object *let2lambda(object *let);
+object *and2nested_if(object *and);
+object *or2nested_if(object *or);
+
+#endif /*include guard*/
diff --git a/samples/C/dynarray.cats b/samples/C/dynarray.cats
new file mode 100644
index 00000000..95ee54ba
--- /dev/null
+++ b/samples/C/dynarray.cats
@@ -0,0 +1,56 @@
+/* ******************************************************************* */
+/*                                                                     */
+/*                         Applied Type System                         */
+/*                                                                     */
+/* ******************************************************************* */
+
+/*
+** ATS/Postiats - Unleashing the Potential of Types!
+** Copyright (C) 2011-20?? Hongwei Xi, ATS Trustful Software, Inc.
+** All rights reserved
+**
+** ATS is free software;  you can  redistribute it and/or modify it under
+** the terms of  the GNU GENERAL PUBLIC LICENSE (GPL) as published by the
+** Free Software Foundation; either version 3, or (at  your  option)  any
+** later version.
+** 
+** ATS is distributed in the hope that it will be useful, but WITHOUT ANY
+** WARRANTY; without  even  the  implied  warranty  of MERCHANTABILITY or
+** FITNESS FOR A PARTICULAR PURPOSE.  See the  GNU General Public License
+** for more details.
+** 
+** You  should  have  received  a  copy of the GNU General Public License
+** along  with  ATS;  see the  file COPYING.  If not, please write to the
+** Free Software Foundation,  51 Franklin Street, Fifth Floor, Boston, MA
+** 02110-1301, USA.
+*/
+
+/* ****** ****** */
+
+/*
+(* Author: Hongwei Xi *)
+(* Authoremail: hwxi AT cs DOT bu DOT edu *)
+(* Start time: March, 2013 *)
+*/
+
+/* ****** ****** */
+
+#ifndef ATSHOME_LIBATS_DYNARRAY_CATS
+#define ATSHOME_LIBATS_DYNARRAY_CATS
+
+/* ****** ****** */
+
+#include <string.h>
+
+/* ****** ****** */
+
+#define atslib_dynarray_memcpy memcpy
+#define atslib_dynarray_memmove memmove
+
+/* ****** ****** */
+
+#endif // ifndef ATSHOME_LIBATS_DYNARRAY_CATS
+
+/* ****** ****** */
+
+/* end of [dynarray.cats] */
diff --git a/samples/C/readline.cats b/samples/C/readline.cats
new file mode 100644
index 00000000..3fad326b
--- /dev/null
+++ b/samples/C/readline.cats
@@ -0,0 +1,47 @@
+/*
+** API in ATS for GNU-readline
+*/
+
+/* ****** ****** */
+
+/*
+** Permission to use, copy, modify, and distribute this software for any
+** purpose with or without fee is hereby granted, provided that the above
+** copyright notice and this permission notice appear in all copies.
+** 
+** THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+** WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+** MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+** ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+** WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+** ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+** OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+/* ****** ****** */
+
+#ifndef READLINE_READLINE_CATS
+#define READLINE_READLINE_CATS
+
+/* ****** ****** */
+
+#include <readline/readline.h>
+
+/* ****** ****** */
+//
+#define \
+atscntrb_readline_rl_library_version() ((char*)rl_library_version)
+//
+#define atscntrb_readline_rl_readline_version() (rl_readline_version)
+//
+/* ****** ****** */
+
+#define atscntrb_readline_readline readline
+
+/* ****** ****** */
+
+#endif // ifndef READLINE_READLINE_CATS
+
+/* ****** ****** */
+
+/* end of [readline.cats] */
diff --git a/samples/Cirru/array.cirru b/samples/Cirru/array.cirru
new file mode 100644
index 00000000..9375c650
--- /dev/null
+++ b/samples/Cirru/array.cirru
@@ -0,0 +1,12 @@
+
+print $ array
+  int 1
+  string 2
+
+print $ array
+  int 1
+  array
+    int 2
+    string 3
+    array
+      string 4
\ No newline at end of file
diff --git a/samples/Cirru/block.cirru b/samples/Cirru/block.cirru
new file mode 100644
index 00000000..a9bf0c83
--- /dev/null
+++ b/samples/Cirru/block.cirru
@@ -0,0 +1,7 @@
+
+set f $ block (a b c)
+  print a b c
+
+call f (int 1) (int 2) (int 3)
+
+f (int 1) (int 2) (int 3)
\ No newline at end of file
diff --git a/samples/Cirru/bool.cirru b/samples/Cirru/bool.cirru
new file mode 100644
index 00000000..686d132e
--- /dev/null
+++ b/samples/Cirru/bool.cirru
@@ -0,0 +1,7 @@
+
+print $ bool true
+print $ bool false
+print $ bool yes
+print $ bool no
+print $ bool 1
+print $ bool 0
\ No newline at end of file
diff --git a/samples/Cirru/map.cirru b/samples/Cirru/map.cirru
new file mode 100644
index 00000000..5f445668
--- /dev/null
+++ b/samples/Cirru/map.cirru
@@ -0,0 +1,14 @@
+
+print $ map
+  a $ int 5
+  b $ array (int 1) (int 2)
+  c $ map
+    int 1
+    array (int 4)
+
+set m $ map
+  a $ int 1
+
+set m b $ int 2
+
+print m
\ No newline at end of file
diff --git a/samples/Cirru/number.cirru b/samples/Cirru/number.cirru
new file mode 100644
index 00000000..56e0ac7d
--- /dev/null
+++ b/samples/Cirru/number.cirru
@@ -0,0 +1,3 @@
+
+print $ int 1
+print $ float 1.2
\ No newline at end of file
diff --git a/samples/Cirru/require.cirru b/samples/Cirru/require.cirru
new file mode 100644
index 00000000..53283468
--- /dev/null
+++ b/samples/Cirru/require.cirru
@@ -0,0 +1,2 @@
+
+require ./stdio.cr
diff --git a/samples/Cirru/scope.cirru b/samples/Cirru/scope.cirru
new file mode 100644
index 00000000..9a6512c9
--- /dev/null
+++ b/samples/Cirru/scope.cirru
@@ -0,0 +1,23 @@
+
+set a (int 2)
+
+print (self)
+
+set c (child)
+
+under c
+  under parent
+    print a
+
+print $ get c a
+
+set c x (int 3)
+print $ get c x
+
+set just-print $ code
+  print a
+
+print just-print
+
+eval (self) just-print
+eval just-print
\ No newline at end of file
diff --git a/samples/Cirru/stdio.cirru b/samples/Cirru/stdio.cirru
new file mode 100644
index 00000000..ef5400e6
--- /dev/null
+++ b/samples/Cirru/stdio.cirru
@@ -0,0 +1,55 @@
+
+set a $ string 1
+print a
+
+print (string 1)
+
+print nothing
+
+print
+  map
+    a (int 4)
+    b $ map
+      a $ int 5
+      b $ int 6
+      c $ map
+        int 7
+
+print
+  array
+    int 1
+    int 2
+    array
+      int 3
+      int 4
+
+print
+  array
+    int 1
+    map
+      a $ int 2
+      b $ array
+        int 3
+
+print
+  int 1
+  int 2
+
+print $ code
+  set a 1
+  print (get a)
+  print $ array
+    int a
+    array
+      int a
+
+set container (map)
+set container code $ code
+  set a 1
+  print (get a)
+  print $ array
+    int a
+    array
+      int a
+
+print container
\ No newline at end of file
diff --git a/samples/Cirru/string.cirru b/samples/Cirru/string.cirru
new file mode 100644
index 00000000..d4c4331b
--- /dev/null
+++ b/samples/Cirru/string.cirru
@@ -0,0 +1,3 @@
+
+print $ string a
+print $ string "a b"
\ No newline at end of file
diff --git a/samples/Common Lisp/macros-advanced.cl b/samples/Common Lisp/macros-advanced.cl
new file mode 100644
index 00000000..b746d769
--- /dev/null
+++ b/samples/Common Lisp/macros-advanced.cl	
@@ -0,0 +1,82 @@
+;; @file macros-advanced.cl
+;;
+;; @breif Advanced macro practices - defining your own macros
+;;
+;; Macro definition skeleton:
+;; (defmacro name (parameter*)
+;;   "Optional documentation string"
+;;   body-form*)
+;;
+;; Note that backquote expression is most often used in the `body-form`
+;;
+
+; `primep` test a number for prime
+(defun primep (n)
+  "test a number for prime"
+  (if (< n 2) (return-from primep))
+  (do ((i 2 (1+ i)) (p t (not (zerop (mod n i)))))
+      ((> i (sqrt n)) p)
+    (when (not p) (return))))
+; `next-prime` return the next prime bigger than the specified number
+(defun next-prime (n)
+  "return the next prime bigger than the speicified number"
+  (do ((i (1+ n) (1+ i)))
+      ((primep i) i)))
+;
+; The recommended procedures to writting a new macro are as follows:
+; 1. Write a sample call to the macro and the code it should expand into
+(do-primes (p 0 19)
+  (format t "~d " p))
+; Expected expanded codes
+(do ((p (next-prime (- 0 1)) (next-prime p)))
+    ((> p 19))
+  (format t "~d " p))
+; 2. Write code that generate the hardwritten expansion from the arguments in
+; the sample call
+(defmacro do-primes (var-and-range &rest body)
+  (let ((var (first var-and-range))
+        (start (second var-and-range))
+        (end (third var-and-range)))
+    `(do ((,var (next-prime (- ,start 1)) (next-prime ,var)))
+         ((> ,var ,end))
+      ,@body)))
+; 2-1. More concise implementations with the 'parameter list destructuring' and
+; '&body' synonym, it also emits more friendly messages on incorrent input.
+(defmacro do-primes ((var start end) &body body)
+  `(do ((,var (next-prime (- ,start 1)) (next-prime ,var)))
+       ((> ,var ,end))
+    ,@body))
+; 2-2. Test the result of macro expansion with the `macroexpand-1` function
+(macroexpand-1 '(do-primes (p 0 19) (format t "~d " p)))
+; 3. Make sure the macro abstraction does not "leak"
+(defmacro do-primes ((var start end) &body body)
+  (let ((end-value-name (gensym)))
+    `(do ((,var (next-prime (- ,start 1)) (next-prime ,var))
+          (,end-value-name ,end))
+         ((> ,var ,end-value-name))
+      ,@body)))
+; 3-1. Rules to observe to avoid common and possible leaks
+;   a. include any subforms in the expansion in positions that will be evaluated
+;      in the same order as the subforms appear in the macro call
+;   b. make sure subforms are evaluated only once by creating a variable in the
+;      expansion to hold the value of evaluating the argument form, and then
+;      using that variable anywhere else the value is needed in the expansion
+;   c. use `gensym` at macro expansion time to create variable names used in the
+;      expansion
+;
+; Appendix I. Macro-writting macros, 'with-gensyms', to guranttee that rule c
+; gets observed.
+; Example usage of `with-gensyms`
+(defmacro do-primes-a ((var start end) &body body)
+  "do-primes implementation with macro-writting macro 'with-gensyms'"
+  (with-gensyms (end-value-name)
+    `(do ((,var (next-prime (- ,start 1)) (next-prime ,var))
+          (,end-value-name ,end))
+         ((> ,var ,end-value-name))
+      ,@body)))
+; Define the macro, note how comma is used to interpolate the value of the loop
+; expression
+(defmacro with-gensyms ((&rest names) &body body)
+  `(let ,(loop for n in names collect `(,n (gensym)))
+    ,@body)
+)
\ No newline at end of file
diff --git a/samples/Common Lisp/motor-inferencia.cl b/samples/Common Lisp/motor-inferencia.cl
new file mode 100644
index 00000000..6a2a97ea
--- /dev/null
+++ b/samples/Common Lisp/motor-inferencia.cl	
@@ -0,0 +1,475 @@
+#|
+ESCUELA POLITECNICA SUPERIOR - UNIVERSIDAD AUTONOMA DE MADRID
+INTELIGENCIA ARTIFICIAL
+
+Motor de inferencia
+Basado en parte en "Paradigms of AI Programming: Case Studies
+in Common Lisp", de Peter Norvig, 1992
+|#
+
+
+;;;;;;;;;;;;;;;;;;;;;
+;;;; Global variables
+;;;;;;;;;;;;;;;;;;;;;
+
+
+(defvar *hypothesis-list*)
+(defvar *rule-list*)
+(defvar *fact-list*)
+
+;;;;;;;;;;;;;;;;;;;;;
+;;;; Constants
+;;;;;;;;;;;;;;;;;;;;;
+
+(defconstant +fail+ nil "Indicates unification failure")
+
+(defconstant +no-bindings+ '((nil))
+  "Indicates unification success, with no variables.")
+
+(defconstant *mundo-abierto* nil)
+
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;;;;
+;;;; Functions for the user
+;;;;;;;;;;;;;;;;;;;;;;;;;;;
+
+
+;; Resets *fact-list* to NIL
+(defun erase-facts () (setq *fact-list* nil))
+
+(defun set-hypothesis-list (h) (setq *hypothesis-list* h))
+
+
+;; Returns a list of solutions, each one satisfying all the hypothesis contained
+;; in *hypothesis-list*
+(defun motor-inferencia ()
+  (consulta *hypothesis-list*))
+
+
+
+;;;;;;;;;;;;;;;;;;;;;;;;
+;;;; Auxiliary functions
+;;;;;;;;;;;;;;;;;;;;;;;;
+
+#|____________________________________________________________________________
+FUNCTION: CONSULTA
+
+COMMENTS:
+CONSULTA receives a list of hypothesis (variable <hypotheses>), and returns
+a list of binding lists (each binding list being a solution).
+
+EXAMPLES:
+hypotheses is:
+((brothers ?x ?y) (neighbours juan ?x)).
+
+That is, we are searching the brothers of the possible neighbors of Juan.
+
+The function can return in this case:
+ 
+(((?x . sergio) (?y . javier)) ((?x . julian) (?y . mario)) ((?x . julian) (?y . pedro))).
+That is, the neighbors of Juan (Sergio and Julian) have 3 brothers in total(Javier, Mario, Pedro)
+____________________________________________________________________________|#
+
+(defun consulta (hypotheses)
+  (if (null hypotheses) (list +no-bindings+)
+    (mapcan #'(lambda (b)
+                (mapcar #'(lambda (x) (une-bindings-con-bindings b x))
+                  (consulta (subst-bindings b (rest hypotheses)))))
+      (find-hypothesis-value (first hypotheses)))))
+
+
+
+#|____________________________________________________________________________
+FUNCTION: FIND-HYPOTHESIS-VALUE
+
+COMMENTS:
+This function manages the query a single query (only one hypothesis) given a binding list.
+It tries (in the following order) to:
+- Answer the query from *fact-list*
+- Answer the query from the rules in *rule-list*
+- Ask the user
+
+The function returns a list of solutions (list of binding lists).
+
+EXAMPLES:
+If hypothesis is (brothers ?x ?y)
+and the function returns:
+(((?x . sergio) (?y . javier)) ((?x . julian) (?y . maria)) ((?x . alberto) (?y . pedro))).
+
+Means that Sergio and Javier and brothers, Julian and Mario are brothers, and Alberto and Pedro are brothers.
+____________________________________________________________________________|#
+
+(defun find-hypothesis-value (hypothesis)
+  (let (rules)
+   (cond
+    ((equality? hypothesis) 
+     (value-from-equality hypothesis))
+    ((value-from-facts hypothesis))
+    ((setq good-rules (find-rules hypothesis)) 
+     (value-from-rules hypothesis good-rules))
+    (t (ask-user hypothesis)))))
+
+
+
+; une-bindings-con-bindings takes two binding lists and returns a binding list
+; Assumes that b1 and b2 are not +fail+
+(defun une-bindings-con-bindings (b1 b2)
+  (cond
+   ((equal b1 +no-bindings+) b2)
+   ((equal b2 +no-bindings+) b1)
+   (T (append b1 b2))))
+
+
+
+#|____________________________________________________________________________
+FUNCTION: VALUE-FROM-FACTS
+
+COMMENTS:
+Returns all the solutions of <hypothesis> obtained directly from *fact-list*
+
+EXAMPLES:
+> (setf *fact-list* '((man luis) (man pedro)(woman mart)(man daniel)(woman laura)))
+
+> (value-from-facts '(man ?x))
+returns:
+
+(((?X . LUIS)) ((?X . PEDRO)) ((?X . DANIEL)))
+____________________________________________________________________________|#
+
+(defun value-from-facts (hypothesis)
+  (mapcan #'(lambda(x) (let ((aux (unify hypothesis x)))
+                         (when aux (list aux)))) *fact-list*))
+
+
+
+
+#|____________________________________________________________________________
+FUNCTION: FIND-RULES
+
+COMMENTS:
+Returns the rules in *rule-list* whose THENs unify with the term given in <hypothesis>
+The variables in the rules that satisfy this requirement are renamed.
+
+EXAMPLES:
+> (setq *rule-list*
+      '((R1 (pertenece ?E (?E . ?_)))
+        (R2 (pertenece ?E (?_ . ?Xs)) :- ((pertenece ?E ?Xs)))))
+
+Then:
+> (FIND-RULES (PERTENECE 1 (2 5)))
+returns:
+((R2 (PERTENECE ?E.1 (?_ . ?XS.2)) :- ((PERTENECE ?E.1 ?XS.2))))
+That is, only the THEN of rule R2 unify with <hypothesis>
+
+However,
+> (FIND-RULES (PERTENECE 1 (1 6 7)))
+
+returns:
+((R1 (PERTENECE ?E.6 (?E.6 . ?_)))
+ (R2 (PERTENECE ?E.7 (?_ . ?XS.8)) :- ((PERTENECE ?E.7 ?XS.8))))
+So the THEN of both rules unify with <hypothesis>
+____________________________________________________________________________|#
+
+(defun find-rules (hypothesis)
+  (mapcan #'(lambda(b) (let ((renamed-rule (rename-variables b)))
+                         (when (in-then? hypothesis renamed-rule)
+                           (list renamed-rule)))) *rule-list*))
+
+(defun in-then? (hypothesis rule)
+  (unless (null (rule-then rule))
+    (not (equal +fail+ (unify hypothesis (rule-then rule))))))
+
+
+
+#|____________________________________________________________________________
+FUNCTION: VALUE-FROM-RULES
+
+COMMENTS:
+Returns all the solutions to <hypothesis> found using all the rules given in
+the list <rules>. Note that a single rule can have multiple solutions.
+____________________________________________________________________________|#
+(defun value-from-rules (hypothesis rules)
+  (mapcan #'(lambda (r) (eval-rule hypothesis r)) rules))
+
+(defun limpia-vinculos (termino bindings)
+  (unify termino (subst-bindings bindings termino)))
+
+
+#|____________________________________________________________________________
+FUNCTION: EVAL-RULE
+
+COMMENTS:
+Returns all the solutions found using the rule given as input argument.
+
+EXAMPLES:
+> (setq *rule-list*
+      '((R1 (pertenece ?E (?E . ?_)))
+        (R2 (pertenece ?E (?_ . ?Xs)) :- ((pertenece ?E ?Xs)))))
+Then:
+> (EVAL-RULE 
+   (PERTENECE 1 (1 6 7)) 
+   (R1 (PERTENECE ?E.42 (?E.42 . ?_))))
+returns:
+(((NIL)))
+That is, the query (PERTENECE 1 (1 6 7)) can be proven from the given rule, and
+no binding in the variables in the query is necessary (in fact, the query has no variables).
+On the other hand:
+> (EVAL-RULE 
+   (PERTENECE 1 (7)) 
+   (R2 (PERTENECE ?E.49 (?_ . ?XS.50)) :- ((PERTENECE ?E.49 ?XS.50))))
+returns:
+NIL
+That is, the query can not be proven from the rule R2.
+____________________________________________________________________________|#
+
+(defun eval-rule (hypothesis rule)
+  (let ((bindings-then 
+          (unify (rule-then rule) hypothesis)))
+    (unless (equal +fail+ bindings-then)
+      (if (rule-ifs rule)
+          (mapcar #'(lambda(b) (limpia-vinculos hypothesis (append bindings-then b)))
+            (consulta (subst-bindings bindings-then (rule-ifs rule))))
+        (list (limpia-vinculos hypothesis bindings-then))))))
+
+
+(defun ask-user (hypothesis)
+  (let ((question hypothesis))
+    (cond
+     ((variables-in question) +fail+)
+     ((not-in-fact-list? question) +fail+)
+     (*mundo-abierto*
+      (format t "~%Es cierto el hecho ~S? (T/nil)" question)
+      (cond
+       ((read) (add-fact question) +no-bindings+)
+       (T (add-fact (list 'NOT question)) +fail+)))
+     (T +fail+))))
+
+
+; value-from-equality:
+(defun value-from-equality (hypothesis)
+  (let ((new-bindings (unify (second hypothesis) (third hypothesis))))
+    (if (not (equal +fail+ new-bindings)) 
+	(list new-bindings))))
+
+
+
+#|____________________________________________________________________________
+FUNCTION: UNIFY
+
+COMMENTS:
+Finds the most general unifier of two input expressions, taking into account the
+bindings specified in the input <bingings>
+In case the two expressions can unify, the function returns the total bindings necessary
+for that unification. Otherwise, returns +fail+
+
+EXAMPLES:
+> (unify '1 '1)
+((NIL)) ;; which is the constant +no-bindings+
+> (unify 1 '2)
+nil     ;; which is the constant +fail+
+> (unify '?x 1)
+((?x . 1))
+> (unify '(1 1) ?x)
+((? x 1 1))
+> (unify '?_ '?x)
+((NIL))
+> (unify '(p ?x 1 2) '(p ?y ?_ ?_))
+((?x . ?y))
+> (unify '(?a . ?_) '(1 2 3)) 
+((?a . 1)) 
+> (unify '(?_ ?_) '(1 2))
+((nil))
+> (unify '(?a . ?b) '(1 2 3)) 
+((?b 2 3) (?a . 1)) 
+> (unify '(?a . ?b) '(?v . ?d)) 
+((?b . ?d) (?a . ?v)) 
+> (unify '(?eval (+ 1 1)) '1) 
+nil
+> (unify '(?eval (+ 1 1)) '2) 
+(nil)) 
+____________________________________________________________________________|#
+
+(defun unify (x y &optional (bindings +no-bindings+))
+  "See if x and y match with given bindings.  If they do,
+  return a binding list that would make them equal [p 303]."
+  (cond ((eq bindings +fail+) +fail+)
+        ((eql x y) bindings)
+        ((eval? x) (unify-eval x y bindings))
+        ((eval? y) (unify-eval y x bindings))
+        ((variable? x) (unify-var x y bindings))
+        ((variable? y) (unify-var y x bindings))
+        ((and (consp x) (consp y))
+         (unify (rest x) (rest y) 
+                (unify (first x) (first y) bindings)))
+        (t +fail+)))
+
+
+;; rename-variables: renombra ?X por ?X.1, ?Y por ?Y.2 etc. salvo ?_ que no se renombra
+(defun rename-variables (x)
+  "Replace all variables in x with new ones. Excepto ?_"
+  (sublis (mapcar #'(lambda (var) 
+		      (if (anonymous-var? var)
+			  (make-binding var var)
+			(make-binding var (new-variable var))))
+		  (variables-in x))
+	  x))
+
+
+
+;;;; Auxiliary Functions
+
+(defun unify-var (var x bindings)
+  "Unify var with x, using (and maybe extending) bindings [p 303]."
+  (cond ((or (anonymous-var? var)(anonymous-var? x)) bindings)
+	((get-binding var bindings)
+	 (unify (lookup var bindings) x bindings))
+	((and (variable? x) (get-binding x bindings))
+	 (unify var (lookup x bindings) bindings))
+	((occurs-in? var x bindings)
+	 +fail+)
+	(t (extend-bindings var x bindings))))
+
+(defun variable? (x)
+  "Is x a variable (a symbol starting with ?)?"
+  (and (symbolp x) (eql (char (symbol-name x) 0) #\?)))
+
+(defun get-binding (var bindings)
+  "Find a (variable . value) pair in a binding list."
+  (assoc var bindings))
+
+(defun binding-var (binding)
+  "Get the variable part of a single binding."
+  (car binding))
+
+(defun binding-val (binding)
+  "Get the value part of a single binding."
+  (cdr binding))
+
+(defun make-binding (var val) (cons var val))
+
+(defun lookup (var bindings)
+  "Get the value part (for var) from a binding list."
+  (binding-val (get-binding var bindings)))
+
+(defun extend-bindings (var val bindings)
+  "Add a (var . value) pair to a binding list."
+  (append 
+   (unless (eq bindings +no-bindings+) bindings)
+   (list (make-binding var val))))
+
+(defun occurs-in? (var x bindings)
+  "Does var occur anywhere inside x?"
+  (cond ((eq var x) t)
+        ((and (variable? x) (get-binding x bindings))
+         (occurs-in? var (lookup x bindings) bindings))
+        ((consp x) (or (occurs-in? var (first x) bindings)
+                       (occurs-in? var (rest x) bindings)))
+        (t nil)))
+
+(defun subst-bindings (bindings x)
+  "Substitute the value of variables in bindings into x,
+  taking recursively bound variables into account."
+  (cond ((eq bindings +fail+) +fail+)
+        ((eq bindings +no-bindings+) x)
+        ((and (listp x) (eq '?eval (car x)))
+         (subst-bindings-quote bindings x))
+        ((and (variable? x) (get-binding x bindings))
+         (subst-bindings bindings (lookup x bindings)))
+        ((atom x) x)
+        (t (cons (subst-bindings bindings (car x)) ;; s/reuse-cons/cons
+		 (subst-bindings bindings (cdr x))))))
+
+(defun unifier (x y)
+ "Return something that unifies with both x and y (or fail)."
+ (subst-bindings (unify x y) x))
+
+(defun variables-in (exp)
+  "Return a list of all the variables in EXP."
+  (unique-find-anywhere-if #'variable? exp))
+
+(defun unique-find-anywhere-if (predicate tree &optional found-so-far)
+  "Return a list of leaves of tree satisfying predicate,
+  with duplicates removed."
+  (if (atom tree)
+      (if (funcall predicate tree)
+          (pushnew tree found-so-far)
+          found-so-far)
+    (unique-find-anywhere-if
+        predicate
+        (first tree)
+        (unique-find-anywhere-if predicate (rest tree)
+                                 found-so-far))))
+
+(defun find-anywhere-if (predicate tree)
+  "Does predicate apply to any atom in the tree?"  
+  (if (atom tree)
+      (funcall predicate tree)
+      (or (find-anywhere-if predicate (first tree))
+          (find-anywhere-if predicate (rest tree)))))
+
+(defun new-variable (var)
+  "Create a new variable.  Assumes user never types variables of form ?X.9"
+  (gentemp (format nil "~S." var)))
+;  (gentemp "?") )
+;;;
+
+(defun anonymous-var? (x)
+  (eq x '?_))
+
+(defun subst-bindings-quote (bindings x)
+  "Substitute the value of variables in bindings into x,
+  taking recursively bound variables into account."
+  (cond ((eq bindings +fail+) +fail+)
+        ((eq bindings +no-bindings+) x)
+        ((and (variable? x) (get-binding x bindings))
+         (if (variable? (lookup x bindings))
+             (subst-bindings-quote bindings (lookup x bindings))
+             (subst-bindings-quote bindings (list 'quote (lookup x bindings)))
+         )
+        )     
+        ((atom x) x)
+        (t (cons (subst-bindings-quote bindings (car x)) ;; s/reuse-cons/cons
+		 (subst-bindings-quote bindings (cdr x))))))
+
+(defun eval? (x)
+  (and (consp x) (eq (first x) '?eval)))
+
+(defun unify-eval (x y bindings)
+  (let ((exp (subst-bindings-quote bindings (second x))))
+    (if (variables-in exp)
+	+fail+
+      (unify (eval exp) y bindings))))
+
+
+
+(defun rule-ifs (rule) (fourth rule))
+(defun rule-then (rule) (second rule))
+
+
+(defun equality? (term)
+  (and (consp term) (eql (first term) '?=)))
+
+
+(defun in-fact-list? (expresion)
+  (some #'(lambda(x) (equal x expresion)) *fact-list*))
+                     
+(defun not-in-fact-list? (expresion)
+  (if (eq (car expresion) 'NOT)
+      (in-fact-list? (second expresion))
+    (in-fact-list? (list 'NOT expresion))))
+
+
+;; add-fact:
+
+(defun add-fact (fact)
+  (setq *fact-list* (cons fact *fact-list*)))
+
+
+(defun variable? (x)
+  "Is x a variable (a symbol starting with ?) except ?eval and ?="
+  (and (not (equal x '?eval)) (not (equal x '?=)) 
+       (symbolp x) (eql (char (symbol-name x) 0) #\?)))
+
+
+;; EOF
\ No newline at end of file
diff --git a/samples/Component Pascal/Example.cp b/samples/Component Pascal/Example.cp
new file mode 100644
index 00000000..5bace2c4
--- /dev/null
+++ b/samples/Component Pascal/Example.cp	
@@ -0,0 +1,130 @@
+MODULE ObxControls;
+(**
+    project         = "BlackBox"
+    organization    = "www.oberon.ch"
+    contributors    = "Oberon microsystems"
+    version         = "System/Rsrc/About"
+    copyright       = "System/Rsrc/About"
+    license         = "Docu/BB-License"
+    changes         = ""
+    issues          = ""
+
+**)
+
+IMPORT Dialog, Ports, Properties, Views;
+
+CONST beginner = 0; advanced = 1; expert = 2; guru = 3;    (* user classes *)
+
+TYPE
+    View = POINTER TO RECORD (Views.View)
+        size: INTEGER    (* border size in mm *)
+    END;
+
+VAR
+    data*: RECORD
+        class*: INTEGER;    (* current user class *)
+        list*: Dialog.List;    (* list of currently available sizes, derived from class *)
+        width*: INTEGER    (* width of next view to be opened. Derived from
+                                    class, or entered through a text entry field *)
+    END;
+
+    predef: ARRAY 6 OF INTEGER;    (* table of predefined sizes *)
+
+
+PROCEDURE SetList;
+BEGIN
+    IF data.class = beginner THEN
+        data.list.SetLen(1);
+        data.list.SetItem(0, "default")
+    ELSIF data.class = advanced THEN
+        data.list.SetLen(4);
+        data.list.SetItem(0, "default");
+        data.list.SetItem(1, "small");
+        data.list.SetItem(2, "medium");
+        data.list.SetItem(3, "large");
+    ELSE
+        data.list.SetLen(6);
+        data.list.SetItem(0, "default");
+        data.list.SetItem(1, "small");
+        data.list.SetItem(2, "medium");
+        data.list.SetItem(3, "large");
+        data.list.SetItem(4, "tiny");
+        data.list.SetItem(5, "huge");
+    END
+END SetList;
+
+(* View *)
+
+PROCEDURE (v: View) CopyFromSimpleView (source: Views.View);
+BEGIN
+    v.size := source(View).size
+END CopyFromSimpleView;
+
+PROCEDURE (v: View) Restore (f: Views.Frame; l, t, r, b: INTEGER);
+BEGIN    (* fill view with a red square of size v.size *)
+    IF v.size = 0 THEN v.size := predef[0] END;    (* lazy initialization of size *)
+    f.DrawRect(0, 0, v.size, v.size, Ports.fill, Ports.red)
+END Restore;
+
+PROCEDURE (v: View) HandlePropMsg (VAR msg: Views.PropMessage);
+BEGIN
+    WITH msg: Properties.SizePref DO
+        IF v.size = 0 THEN v.size := predef[0] END;    (* lazy initialization of size *)
+        msg.w := v.size; msg.h := v.size    (* tell environment about desired width and height *)
+    ELSE    (* ignore other messages *)
+    END
+END HandlePropMsg;
+
+(* notifiers *)
+
+PROCEDURE ClassNotify* (op, from, to: INTEGER);
+BEGIN    (* react to change in data.class *)
+    IF op = Dialog.changed THEN
+        IF (to = beginner) OR (to = advanced) & (data.list.index > 3) THEN
+            (* if class is reduced, make sure that selection contains legal elements *)
+            data.list.index := 0; data.width := predef[0];    (* modify interactor *)
+            Dialog.Update(data)    (* redraw controls where necessary *)
+        END;
+        SetList;
+        Dialog.UpdateList(data.list)    (* reconstruct list box contents *)
+    END
+END ClassNotify;
+
+PROCEDURE ListNotify* (op, from, to: INTEGER);
+BEGIN    (* reacto to change in data.list (index to was selected) *)
+    IF op = Dialog.changed THEN
+        data.width := predef[to];    (* modify interactor *)
+        Dialog.Update(data)    (* redraw controls where necessary *)
+    END
+END ListNotify;
+
+(* guards *)
+
+PROCEDURE ListGuard* (VAR par: Dialog.Par);
+BEGIN    (* disable list box for a beginner *)
+    par.disabled := data.class = beginner
+END ListGuard;
+
+PROCEDURE WidthGuard* (VAR par: Dialog.Par);
+BEGIN    (* make text entry field read-only if user is not guru *)
+    par.readOnly := data.class # guru
+END WidthGuard;
+
+(* commands *)
+
+PROCEDURE Open*;
+    VAR v: View;
+BEGIN
+    NEW(v);    (* create and initialize a new view *)
+    v.size := data.width * Ports.mm;    (* define view's size in function of class *)
+    Views.OpenAux(v, "Example")    (* open the view in a window *)
+END Open;
+
+BEGIN    (* initialization of global variables *)
+    predef[0] := 40; predef[1] := 30; predef[2] := 50;    (* predefined sizes *)
+    predef[3] := 70; predef[4] := 20; predef[5] := 100;
+    data.class := beginner;    (* default values *)
+    data.list.index := 0;
+    data.width := predef[0];
+    SetList
+END ObxControls.
diff --git a/samples/Component Pascal/Example2.cps b/samples/Component Pascal/Example2.cps
new file mode 100644
index 00000000..4c4b3930
--- /dev/null
+++ b/samples/Component Pascal/Example2.cps	
@@ -0,0 +1,71 @@
+MODULE ObxFact;
+(**
+    project         = "BlackBox"
+    organization    = "www.oberon.ch"
+    contributors    = "Oberon microsystems"
+    version         = "System/Rsrc/About"
+    copyright       = "System/Rsrc/About"
+    license         = "Docu/BB-License"
+    changes         = ""
+    issues          = ""
+
+**)
+
+IMPORT
+    Stores, Models, TextModels, TextControllers, Integers;
+
+PROCEDURE Read(r: TextModels.Reader; VAR x: Integers.Integer);
+    VAR i, len, beg: INTEGER; ch: CHAR; buf: POINTER TO ARRAY OF CHAR;
+BEGIN
+    r.ReadChar(ch);
+    WHILE ~r.eot & (ch <= " ") DO r.ReadChar(ch) END;
+    ASSERT(~r.eot & (((ch >= "0") & (ch <= "9")) OR (ch = "-")));
+    beg := r.Pos() - 1; len := 0;
+    REPEAT INC(len); r.ReadChar(ch) UNTIL r.eot OR (ch < "0") OR (ch > "9");
+    NEW(buf, len + 1);
+    i := 0; r.SetPos(beg);
+    REPEAT r.ReadChar(buf[i]); INC(i) UNTIL i = len;
+    buf[i] := 0X;
+    Integers.ConvertFromString(buf^, x)
+END Read;
+
+PROCEDURE Write(w: TextModels.Writer; x: Integers.Integer);
+    VAR i: INTEGER;
+BEGIN
+    IF Integers.Sign(x) < 0 THEN w.WriteChar("-") END;
+    i := Integers.Digits10Of(x);
+    IF i # 0 THEN
+        REPEAT DEC(i); w.WriteChar(Integers.ThisDigit10(x, i)) UNTIL i = 0
+    ELSE w.WriteChar("0")
+    END
+END Write;
+
+PROCEDURE Compute*;
+    VAR beg, end, i, n: INTEGER; ch: CHAR;
+        s: Stores.Operation;
+        r: TextModels.Reader; w: TextModels.Writer; attr: TextModels.Attributes;
+        c: TextControllers.Controller;
+        x: Integers.Integer;
+BEGIN
+    c := TextControllers.Focus();
+    IF (c # NIL) & c.HasSelection() THEN
+        c.GetSelection(beg, end);
+        r := c.text.NewReader(NIL); r.SetPos(beg); r.ReadChar(ch);
+        WHILE ~r.eot & (beg < end) & (ch <= " ") DO r.ReadChar(ch); INC(beg) END;
+        IF ~r.eot & (beg < end) THEN
+            r.ReadPrev; Read(r, x);
+            end := r.Pos(); r.ReadPrev; attr :=r.attr;
+            IF (Integers.Sign(x) > 0) & (Integers.Compare(x, Integers.Long(MAX(LONGINT))) <= 0) THEN
+                n := SHORT(Integers.Short(x)); i := 2; x := Integers.Long(1);
+                WHILE i <= n DO x := Integers.Product(x, Integers.Long(i)); INC(i) END;
+                Models.BeginScript(c.text, "computation", s);
+                c.text.Delete(beg, end);
+                w := c.text.NewWriter(NIL); w.SetPos(beg); w.SetAttr(attr);
+                Write(w, x);
+                Models.EndScript(c.text, s)
+            END
+        END
+    END
+END Compute;
+
+END ObxFact.
\ No newline at end of file
diff --git a/samples/Crystal/const_spec.cr b/samples/Crystal/const_spec.cr
new file mode 100644
index 00000000..3ab20f14
--- /dev/null
+++ b/samples/Crystal/const_spec.cr
@@ -0,0 +1,169 @@
+#!/usr/bin/env bin/crystal --run
+require "../../spec_helper"
+
+describe "Codegen: const" do
+  it "define a constant" do
+    run("A = 1; A").to_i.should eq(1)
+  end
+
+  it "support nested constant" do
+    run("class B; A = 1; end; B::A").to_i.should eq(1)
+  end
+
+  it "support constant inside a def" do
+    run("
+      class Foo
+        A = 1
+
+        def foo
+          A
+        end
+      end
+
+      Foo.new.foo
+    ").to_i.should eq(1)
+  end
+
+  it "finds nearest constant first" do
+    run("
+      A = 1
+
+      class Foo
+        A = 2.5_f32
+
+        def foo
+          A
+        end
+      end
+
+      Foo.new.foo
+    ").to_f32.should eq(2.5)
+  end
+
+  it "allows constants with same name" do
+    run("
+      A = 1
+
+      class Foo
+        A = 2.5_f32
+
+        def foo
+          A
+        end
+      end
+
+      A
+      Foo.new.foo
+    ").to_f32.should eq(2.5)
+  end
+
+  it "constants with expression" do
+    run("
+      A = 1 + 1
+      A
+    ").to_i.should eq(2)
+  end
+
+  it "finds global constant" do
+    run("
+      A = 1
+
+      class Foo
+        def foo
+          A
+        end
+      end
+
+      Foo.new.foo
+    ").to_i.should eq(1)
+  end
+
+  it "define a constant in lib" do
+    run("lib Foo; A = 1; end; Foo::A").to_i.should eq(1)
+  end
+
+  it "invokes block in const" do
+    run("require \"prelude\"; A = [\"1\"].map { |x| x.to_i }; A[0]").to_i.should eq(1)
+  end
+
+  it "declare constants in right order" do
+    run("A = 1 + 1; B = true ? A : 0; B").to_i.should eq(2)
+  end
+
+  it "uses correct types lookup" do
+    run("
+      module A
+        class B
+          def foo
+            1
+          end
+        end
+
+        C = B.new;
+      end
+
+      def foo
+        A::C.foo
+      end
+
+      foo
+      ").to_i.should eq(1)
+  end
+
+  it "codegens variable assignment in const" do
+    run("
+      class Foo
+        def initialize(@x)
+        end
+
+        def x
+          @x
+        end
+      end
+
+      A = begin
+            f = Foo.new(1)
+            f
+          end
+
+      def foo
+        A.x
+      end
+
+      foo
+      ").to_i.should eq(1)
+  end
+
+  it "declaring var" do
+    run("
+      BAR = begin
+        a = 1
+        while 1 == 2
+          b = 2
+        end
+        a
+      end
+      class Foo
+        def compile
+          BAR
+        end
+      end
+
+      Foo.new.compile
+      ").to_i.should eq(1)
+  end
+
+  it "initialize const that might raise an exception" do
+    run("
+      require \"prelude\"
+      CONST = (raise \"OH NO\" if 1 == 2)
+
+      def doit
+        CONST
+      rescue
+      end
+
+      doit.nil?
+    ").to_b.should be_true
+  end
+end
diff --git a/samples/Crystal/declare_var_spec.cr b/samples/Crystal/declare_var_spec.cr
new file mode 100644
index 00000000..c6a44127
--- /dev/null
+++ b/samples/Crystal/declare_var_spec.cr
@@ -0,0 +1,79 @@
+#!/usr/bin/env bin/crystal --run
+require "../../spec_helper"
+
+describe "Type inference: declare var" do
+  it "types declare var" do
+    assert_type("a :: Int32") { int32 }
+  end
+
+  it "types declare var and reads it" do
+    assert_type("a :: Int32; a") { int32 }
+  end
+
+  it "types declare var and changes its type" do
+    assert_type("a :: Int32; while 1 == 2; a = 'a'; end; a") { union_of(int32, char) }
+  end
+
+  it "declares instance var which appears in initialize" do
+    result = assert_type("
+      class Foo
+        @x :: Int32
+      end
+
+      Foo.new") { types["Foo"] }
+
+    mod = result.program
+
+    foo = mod.types["Foo"] as NonGenericClassType
+    foo.instance_vars["@x"].type.should eq(mod.int32)
+  end
+
+  it "declares instance var of generic class" do
+    result = assert_type("
+      class Foo(T)
+        @x :: T
+      end
+
+      Foo(Int32).new") do
+        foo = types["Foo"] as GenericClassType
+        foo_i32 = foo.instantiate([int32] of Type | ASTNode)
+        foo_i32.lookup_instance_var("@x").type.should eq(int32)
+        foo_i32
+    end
+  end
+
+  it "declares instance var of generic class after reopen" do
+    result = assert_type("
+      class Foo(T)
+      end
+
+      f = Foo(Int32).new
+
+      class Foo(T)
+        @x :: T
+      end
+
+      f") do
+        foo = types["Foo"] as GenericClassType
+        foo_i32 = foo.instantiate([int32] of Type | ASTNode)
+        foo_i32.lookup_instance_var("@x").type.should eq(int32)
+        foo_i32
+    end
+  end
+
+  it "declares an instance variable in initialize" do
+    assert_type("
+      class Foo
+        def initialize
+          @x :: Int32
+        end
+
+        def x
+          @x
+        end
+      end
+
+      Foo.new.x
+      ") { int32 }
+  end
+end
diff --git a/samples/Crystal/transformer.cr b/samples/Crystal/transformer.cr
new file mode 100644
index 00000000..8bb78fbe
--- /dev/null
+++ b/samples/Crystal/transformer.cr
@@ -0,0 +1,515 @@
+module Crystal
+  class ASTNode
+    def transform(transformer)
+      transformer.before_transform self
+      node = transformer.transform self
+      transformer.after_transform self
+      node
+    end
+  end
+
+  class Transformer
+    def before_transform(node)
+    end
+
+    def after_transform(node)
+    end
+
+    def transform(node : Expressions)
+      exps = [] of ASTNode
+      node.expressions.each do |exp|
+        new_exp = exp.transform(self)
+        if new_exp
+          if new_exp.is_a?(Expressions)
+            exps.concat new_exp.expressions
+          else
+            exps << new_exp
+          end
+        end
+      end
+
+      if exps.length == 1
+        exps[0]
+      else
+        node.expressions = exps
+        node
+      end
+    end
+
+    def transform(node : Call)
+      if node_obj = node.obj
+        node.obj = node_obj.transform(self)
+      end
+      transform_many node.args
+
+      if node_block = node.block
+        node.block = node_block.transform(self)
+      end
+
+      if node_block_arg = node.block_arg
+        node.block_arg = node_block_arg.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : And)
+      node.left = node.left.transform(self)
+      node.right = node.right.transform(self)
+      node
+    end
+
+    def transform(node : Or)
+      node.left = node.left.transform(self)
+      node.right = node.right.transform(self)
+      node
+    end
+
+    def transform(node : StringInterpolation)
+      transform_many node.expressions
+      node
+    end
+
+    def transform(node : ArrayLiteral)
+      transform_many node.elements
+
+      if node_of = node.of
+        node.of = node_of.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : HashLiteral)
+      transform_many node.keys
+      transform_many node.values
+
+      if of_key = node.of_key
+        node.of_key = of_key.transform(self)
+      end
+
+      if of_value = node.of_value
+        node.of_value = of_value.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : If)
+      node.cond = node.cond.transform(self)
+      node.then = node.then.transform(self)
+      node.else = node.else.transform(self)
+      node
+    end
+
+    def transform(node : Unless)
+      node.cond = node.cond.transform(self)
+      node.then = node.then.transform(self)
+      node.else = node.else.transform(self)
+      node
+    end
+
+    def transform(node : IfDef)
+      node.cond = node.cond.transform(self)
+      node.then = node.then.transform(self)
+      node.else = node.else.transform(self)
+      node
+    end
+
+    def transform(node : MultiAssign)
+      transform_many node.targets
+      transform_many node.values
+      node
+    end
+
+    def transform(node : SimpleOr)
+      node.left = node.left.transform(self)
+      node.right = node.right.transform(self)
+      node
+    end
+
+    def transform(node : Def)
+      transform_many node.args
+      node.body = node.body.transform(self)
+
+      if receiver = node.receiver
+        node.receiver = receiver.transform(self)
+      end
+
+      if block_arg = node.block_arg
+        node.block_arg = block_arg.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : Macro)
+      transform_many node.args
+      node.body = node.body.transform(self)
+
+      if receiver = node.receiver
+        node.receiver = receiver.transform(self)
+      end
+
+      if block_arg = node.block_arg
+        node.block_arg = block_arg.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : PointerOf)
+      node.exp = node.exp.transform(self)
+      node
+    end
+
+    def transform(node : SizeOf)
+      node.exp = node.exp.transform(self)
+      node
+    end
+
+    def transform(node : InstanceSizeOf)
+      node.exp = node.exp.transform(self)
+      node
+    end
+
+    def transform(node : IsA)
+      node.obj = node.obj.transform(self)
+      node.const = node.const.transform(self)
+      node
+    end
+
+    def transform(node : RespondsTo)
+      node.obj = node.obj.transform(self)
+      node
+    end
+
+    def transform(node : Case)
+      node.cond = node.cond.transform(self)
+      transform_many node.whens
+
+      if node_else = node.else
+        node.else = node_else.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : When)
+      transform_many node.conds
+      node.body = node.body.transform(self)
+      node
+    end
+
+    def transform(node : ImplicitObj)
+      node
+    end
+
+    def transform(node : ClassDef)
+      node.body = node.body.transform(self)
+
+      if superclass = node.superclass
+        node.superclass = superclass.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : ModuleDef)
+      node.body = node.body.transform(self)
+      node
+    end
+
+    def transform(node : While)
+      node.cond = node.cond.transform(self)
+      node.body = node.body.transform(self)
+      node
+    end
+
+    def transform(node : Generic)
+      node.name = node.name.transform(self)
+      transform_many node.type_vars
+      node
+    end
+
+    def transform(node : ExceptionHandler)
+      node.body = node.body.transform(self)
+      transform_many node.rescues
+
+      if node_ensure = node.ensure
+        node.ensure = node_ensure.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : Rescue)
+      node.body = node.body.transform(self)
+      transform_many node.types
+      node
+    end
+
+    def transform(node : Union)
+      transform_many node.types
+      node
+    end
+
+    def transform(node : Hierarchy)
+      node.name = node.name.transform(self)
+      node
+    end
+
+    def transform(node : Metaclass)
+      node.name = node.name.transform(self)
+      node
+    end
+
+    def transform(node : Arg)
+      if default_value = node.default_value
+        node.default_value = default_value.transform(self)
+      end
+
+      if restriction = node.restriction
+        node.restriction = restriction.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : BlockArg)
+      node.fun = node.fun.transform(self)
+      node
+    end
+
+    def transform(node : Fun)
+      transform_many node.inputs
+
+      if output = node.output
+        node.output = output.transform(self)
+      end
+
+      node
+    end
+
+    def transform(node : Block)
+      node.args.map! { |exp| exp.transform(self) as Var }
+      node.body = node.body.transform(self)
+      node
+    end
+
+    def transform(node : FunLiteral)
+      node.def.body = node.def.body.transform(self)
+      node
+    end
+
+    def transform(node : FunPointer)
+      if obj = node.obj
+        node.obj = obj.transform(self)
+      end
+      node
+    end
+
+    def transform(node : Return)
+      transform_many node.exps
+      node
+    end
+
+    def transform(node : Break)
+      transform_many node.exps
+      node
+    end
+
+    def transform(node : Next)
+      transform_many node.exps
+      node
+    end
+
+    def transform(node : Yield)
+      if scope = node.scope
+        node.scope = scope.transform(self)
+      end
+      transform_many node.exps
+      node
+    end
+
+    def transform(node : Include)
+      node.name = node.name.transform(self)
+      node
+    end
+
+    def transform(node : Extend)
+      node.name = node.name.transform(self)
+      node
+    end
+
+    def transform(node : RangeLiteral)
+      node.from = node.from.transform(self)
+      node.to = node.to.transform(self)
+      node
+    end
+
+    def transform(node : Assign)
+      node.target = node.target.transform(self)
+      node.value = node.value.transform(self)
+      node
+    end
+
+    def transform(node : Nop)
+      node
+    end
+
+    def transform(node : NilLiteral)
+      node
+    end
+
+    def transform(node : BoolLiteral)
+      node
+    end
+
+    def transform(node : NumberLiteral)
+      node
+    end
+
+    def transform(node : CharLiteral)
+      node
+    end
+
+    def transform(node : StringLiteral)
+      node
+    end
+
+    def transform(node : SymbolLiteral)
+      node
+    end
+
+    def transform(node : RegexLiteral)
+      node
+    end
+
+    def transform(node : Var)
+      node
+    end
+
+    def transform(node : MetaVar)
+      node
+    end
+
+    def transform(node : InstanceVar)
+      node
+    end
+
+    def transform(node : ClassVar)
+      node
+    end
+
+    def transform(node : Global)
+      node
+    end
+
+    def transform(node : Require)
+      node
+    end
+
+    def transform(node : Path)
+      node
+    end
+
+    def transform(node : Self)
+      node
+    end
+
+    def transform(node : LibDef)
+      node.body = node.body.transform(self)
+      node
+    end
+
+    def transform(node : FunDef)
+      if body = node.body
+        node.body = body.transform(self)
+      end
+      node
+    end
+
+    def transform(node : TypeDef)
+      node
+    end
+
+    def transform(node : StructDef)
+      node
+    end
+
+    def transform(node : UnionDef)
+      node
+    end
+
+    def transform(node : EnumDef)
+      node
+    end
+
+    def transform(node : ExternalVar)
+      node
+    end
+
+    def transform(node : IndirectRead)
+      node.obj = node.obj.transform(self)
+      node
+    end
+
+    def transform(node : IndirectWrite)
+      node.obj = node.obj.transform(self)
+      node.value = node.value.transform(self)
+      node
+    end
+
+    def transform(node : TypeOf)
+      transform_many node.expressions
+      node
+    end
+
+    def transform(node : Primitive)
+      node
+    end
+
+    def transform(node : Not)
+      node
+    end
+
+    def transform(node : TypeFilteredNode)
+      node
+    end
+
+    def transform(node : TupleLiteral)
+      transform_many node.exps
+      node
+    end
+
+    def transform(node : Cast)
+      node.obj = node.obj.transform(self)
+      node.to = node.to.transform(self)
+      node
+    end
+
+    def transform(node : DeclareVar)
+      node.var = node.var.transform(self)
+      node.declared_type = node.declared_type.transform(self)
+      node
+    end
+
+    def transform(node : Alias)
+      node.value = node.value.transform(self)
+      node
+    end
+
+    def transform(node : TupleIndexer)
+      node
+    end
+
+    def transform(node : Attribute)
+      node
+    end
+
+    def transform_many(exps)
+      exps.map! { |exp| exp.transform(self) } if exps
+    end
+  end
+end
diff --git a/samples/Dart/point.dart b/samples/Dart/point.dart
index 5bb74b29..ee91239b 100644
--- a/samples/Dart/point.dart
+++ b/samples/Dart/point.dart
@@ -1,15 +1,19 @@
+import 'dart:math' as math;
+
 class Point {
+  num x, y;
+
   Point(this.x, this.y);
-  distanceTo(Point other) {
+
+  num distanceTo(Point other) {
     var dx = x - other.x;
     var dy = y - other.y;
-    return Math.sqrt(dx * dx + dy * dy);
+    return math.sqrt(dx * dx + dy * dy);
   }
-  var x, y;
 }
 
-main() {
-  Point p = new Point(2, 3);
-  Point q = new Point(3, 4);
+void main() {
+  var p = new Point(2, 3);
+  var q = new Point(3, 4);
   print('distance from p to q = ${p.distanceTo(q)}');
 }
diff --git a/samples/Dogescript/example.djs b/samples/Dogescript/example.djs
new file mode 100644
index 00000000..6903cc5a
--- /dev/null
+++ b/samples/Dogescript/example.djs
@@ -0,0 +1,16 @@
+quiet
+ wow 
+    such language
+  very syntax
+        github recognized wow
+loud
+
+such language much friendly
+    rly friendly is true
+        plz console.loge with 'such friend, very inclusive'
+    but
+        plz console.loge with 'no love for doge'
+    wow
+wow
+
+module.exports is language
\ No newline at end of file
diff --git a/samples/E/Extends.E b/samples/E/Extends.E
new file mode 100644
index 00000000..002a9105
--- /dev/null
+++ b/samples/E/Extends.E
@@ -0,0 +1,31 @@
+# from
+# http://wiki.erights.org/wiki/Walnut/Ordinary_Programming/Objects_and_Functions
+def makeVehicle(self) {
+    def vehicle {
+        to milesTillEmpty() {
+            return self.milesPerGallon() * self.getFuelRemaining()
+        }
+    }
+    return vehicle
+}
+
+def makeCar() {
+    var fuelRemaining := 20
+    def car extends makeVehicle(car) {
+        to milesPerGallon() {return 19}
+        to getFuelRemaining() {return fuelRemaining}
+    }
+    return car
+}
+
+def makeJet() {
+    var fuelRemaining := 2000
+    def jet extends makeVehicle(jet) {
+        to milesPerGallon() {return 2}
+        to getFuelRemaining() {return fuelRemaining}
+    }
+    return jet
+}
+
+def car := makeCar()
+println(`The car can go ${car.milesTillEmpty()} miles.`)
diff --git a/samples/E/Functions.E b/samples/E/Functions.E
new file mode 100644
index 00000000..086e4f7a
--- /dev/null
+++ b/samples/E/Functions.E
@@ -0,0 +1,21 @@
+# from
+# http://wiki.erights.org/wiki/Walnut/Ordinary_Programming/Objects_and_Functions
+def makeCar(var name) {
+    var x := 0
+    var y := 0
+    def car {
+        to moveTo(newX,newY) {
+            x := newX
+            y := newY
+        }
+        to getX() {return x}
+        to getY() {return y}
+        to setName(newName) {name := newName}
+        to getName() {return name}
+    } 
+    return car
+}
+# Now use the makeCar function to make a car, which we will move and print
+def sportsCar := makeCar("Ferrari")
+sportsCar.moveTo(10,20)
+println(`The car ${sportsCar.getName()} is at X location ${sportsCar.getX()}`)
diff --git a/samples/E/Guards.E b/samples/E/Guards.E
new file mode 100644
index 00000000..e3e841ae
--- /dev/null
+++ b/samples/E/Guards.E
@@ -0,0 +1,69 @@
+# from
+# http://wiki.erights.org/wiki/Walnut/Advanced_Topics/Build_your_Own_Guards
+def makeVOCPair(brandName :String) :near {
+
+    var myTempContents := def none {}
+
+    def brand {
+        to __printOn(out :TextWriter) :void {
+            out.print(brandName)
+        }
+    }
+
+    def ProveAuth {
+        to __printOn(out :TextWriter) :void {
+            out.print(`<$brandName prover>`)
+        }
+        to getBrand() :near { return brand }
+        to coerce(specimen, optEjector) :near {
+            def sealedBox {
+                to getBrand() :near { return brand }
+                to offerContent() :void {
+                    myTempContents := specimen
+                }
+            }
+            return sealedBox
+        }
+    }
+    def CheckAuth {
+        to __printOn(out :TextWriter) :void {
+            out.print(`<$brandName checker template>`)
+        }
+        to getBrand() :near { return brand }
+        match [`get`, authList :any[]] {
+            def checker {
+                to __printOn(out :TextWriter) :void {
+                    out.print(`<$brandName checker>`)
+                }
+                to getBrand() :near { return brand }
+                to coerce(specimenBox, optEjector) :any {
+                    myTempContents := null
+                    if (specimenBox.__respondsTo("offerContent", 0)) {
+                      # XXX Using __respondsTo/2 here is a kludge
+                        specimenBox.offerContent()
+                    } else {
+                        myTempContents := specimenBox
+                    }
+                    for auth in authList {
+                        if (auth == myTempContents) {
+                            return auth
+                        }
+                    }
+                    myTempContents := none
+                    throw.eject(optEjector,
+                                `Unmatched $brandName authorization`)
+                }
+            }
+        }
+        match [`__respondsTo`, [`get`, _]] {
+            true
+        }
+        match [`__respondsTo`, [_, _]] {
+            false
+        }
+        match [`__getAllegedType`, []] {
+            null.__getAllegedType()
+        }
+    }
+    return [ProveAuth, CheckAuth]
+}
diff --git a/samples/E/IO.E b/samples/E/IO.E
new file mode 100644
index 00000000..e96e41ad
--- /dev/null
+++ b/samples/E/IO.E
@@ -0,0 +1,14 @@
+# E sample from
+# http://wiki.erights.org/wiki/Walnut/Ordinary_Programming/InputOutput
+#File objects for hardwired files:
+def file1 := <file:myFile.txt>
+def file2 := <file:/home/marcs/myFile.txt>
+
+#Using a variable for a file name:
+def filePath := "c:\\docs\\myFile.txt"
+def file3 := <file>[filePath]
+
+#Using a single character to specify a Windows drive
+def file4 := <file:c:/docs/myFile.txt>
+def file5 := <c:/docs/myFile.txt>
+def file6 := <c:\docs\myFile.txt>
diff --git a/samples/E/Promises.E b/samples/E/Promises.E
new file mode 100644
index 00000000..ae03c6ec
--- /dev/null
+++ b/samples/E/Promises.E
@@ -0,0 +1,9 @@
+# E snippet from
+# http://wiki.erights.org/wiki/Walnut/Distributed_Computing/Promises
+when (tempVow) -> {
+    #...use tempVow
+} catch prob {
+    #.... report problem
+} finally {
+    #....log event
+}
diff --git a/samples/E/minChat.E b/samples/E/minChat.E
new file mode 100644
index 00000000..b422a71e
--- /dev/null
+++ b/samples/E/minChat.E
@@ -0,0 +1,18 @@
+# from
+# http://wiki.erights.org/wiki/Walnut/Secure_Distributed_Computing/Auditing_minChat
+pragma.syntax("0.9")
+to send(message) {
+    when (friend<-receive(message)) -> {
+        chatUI.showMessage("self", message)
+    } catch prob {chatUI.showMessage("system", "connection lost")}
+}
+to receive(message) {chatUI.showMessage("friend", message)}
+to receiveFriend(friendRcvr) {
+    bind friend := friendRcvr        
+    chatUI.showMessage("system", "friend has arrived")
+}
+to save(file) {file.setText(makeURIFromObject(chatController))}
+to load(file) {
+    bind friend := getObjectFromURI(file.getText())
+    friend <- receiveFriend(chatController)
+}
diff --git a/samples/Eagle/Eagle.brd b/samples/Eagle/Eagle.brd
new file mode 100644
index 00000000..27f3cbdd
--- /dev/null
+++ b/samples/Eagle/Eagle.brd
@@ -0,0 +1,1396 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE eagle SYSTEM "eagle.dtd">
+<eagle version="6.3">
+<drawing>
+<settings>
+<setting alwaysvectorfont="no"/>
+<setting verticaltext="up"/>
+</settings>
+<grid distance="10" unitdist="mil" unit="mil" style="lines" multiple="1" display="no" altdistance="0.025" altunitdist="inch" altunit="inch"/>
+<layers>
+<layer number="1" name="Top" color="4" fill="1" visible="yes" active="yes"/>
+<layer number="2" name="Route2" color="1" fill="3" visible="no" active="no"/>
+<layer number="3" name="Route3" color="4" fill="3" visible="no" active="no"/>
+<layer number="4" name="Route4" color="1" fill="4" visible="no" active="no"/>
+<layer number="5" name="Route5" color="4" fill="4" visible="no" active="no"/>
+<layer number="6" name="Route6" color="1" fill="8" visible="no" active="no"/>
+<layer number="7" name="Route7" color="4" fill="8" visible="no" active="no"/>
+<layer number="8" name="Route8" color="1" fill="2" visible="no" active="no"/>
+<layer number="9" name="Route9" color="4" fill="2" visible="no" active="no"/>
+<layer number="10" name="Route10" color="1" fill="7" visible="no" active="no"/>
+<layer number="11" name="Route11" color="4" fill="7" visible="no" active="no"/>
+<layer number="12" name="Route12" color="1" fill="5" visible="no" active="no"/>
+<layer number="13" name="Route13" color="4" fill="5" visible="no" active="no"/>
+<layer number="14" name="Route14" color="1" fill="6" visible="no" active="no"/>
+<layer number="15" name="Route15" color="4" fill="6" visible="no" active="no"/>
+<layer number="16" name="Bottom" color="1" fill="1" visible="yes" active="yes"/>
+<layer number="17" name="Pads" color="2" fill="1" visible="yes" active="yes"/>
+<layer number="18" name="Vias" color="2" fill="1" visible="yes" active="yes"/>
+<layer number="19" name="Unrouted" color="6" fill="1" visible="yes" active="yes"/>
+<layer number="20" name="Dimension" color="15" fill="1" visible="yes" active="yes"/>
+<layer number="21" name="tPlace" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="22" name="bPlace" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="23" name="tOrigins" color="15" fill="1" visible="yes" active="yes"/>
+<layer number="24" name="bOrigins" color="15" fill="1" visible="yes" active="yes"/>
+<layer number="25" name="tNames" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="26" name="bNames" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="27" name="tValues" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="28" name="bValues" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="29" name="tStop" color="7" fill="3" visible="no" active="yes"/>
+<layer number="30" name="bStop" color="7" fill="6" visible="no" active="yes"/>
+<layer number="31" name="tCream" color="7" fill="4" visible="no" active="yes"/>
+<layer number="32" name="bCream" color="7" fill="5" visible="no" active="yes"/>
+<layer number="33" name="tFinish" color="6" fill="3" visible="no" active="yes"/>
+<layer number="34" name="bFinish" color="6" fill="6" visible="no" active="yes"/>
+<layer number="35" name="tGlue" color="7" fill="4" visible="no" active="yes"/>
+<layer number="36" name="bGlue" color="7" fill="5" visible="no" active="yes"/>
+<layer number="37" name="tTest" color="7" fill="1" visible="no" active="yes"/>
+<layer number="38" name="bTest" color="7" fill="1" visible="no" active="yes"/>
+<layer number="39" name="tKeepout" color="4" fill="11" visible="yes" active="yes"/>
+<layer number="40" name="bKeepout" color="1" fill="11" visible="yes" active="yes"/>
+<layer number="41" name="tRestrict" color="4" fill="10" visible="yes" active="yes"/>
+<layer number="42" name="bRestrict" color="1" fill="10" visible="yes" active="yes"/>
+<layer number="43" name="vRestrict" color="2" fill="10" visible="yes" active="yes"/>
+<layer number="44" name="Drills" color="7" fill="1" visible="no" active="yes"/>
+<layer number="45" name="Holes" color="7" fill="1" visible="no" active="yes"/>
+<layer number="46" name="Milling" color="3" fill="1" visible="no" active="yes"/>
+<layer number="47" name="Measures" color="7" fill="1" visible="no" active="yes"/>
+<layer number="48" name="Document" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="49" name="Reference" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="51" name="tDocu" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="52" name="bDocu" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="91" name="Nets" color="2" fill="1" visible="no" active="no"/>
+<layer number="92" name="Busses" color="1" fill="1" visible="no" active="no"/>
+<layer number="93" name="Pins" color="2" fill="1" visible="no" active="no"/>
+<layer number="94" name="Symbols" color="4" fill="1" visible="no" active="no"/>
+<layer number="95" name="Names" color="7" fill="1" visible="no" active="no"/>
+<layer number="96" name="Values" color="7" fill="1" visible="no" active="no"/>
+<layer number="97" name="Info" color="7" fill="1" visible="no" active="no"/>
+<layer number="98" name="Guide" color="6" fill="1" visible="no" active="no"/>
+</layers>
+<board>
+<plain>
+<wire x1="0" y1="0" x2="17.76" y2="0" width="0" layer="20"/>
+<wire x1="17.76" y1="0" x2="17.76" y2="6.02" width="0" layer="20"/>
+<wire x1="17.76" y1="6.02" x2="0" y2="6.02" width="0" layer="20"/>
+<wire x1="0" y1="6.02" x2="0" y2="0" width="0" layer="20"/>
+</plain>
+<libraries>
+<library name="rcl">
+<description>&lt;b&gt;Resistors, Capacitors, Inductors&lt;/b&gt;&lt;p&gt;
+Based on the previous libraries:
+&lt;ul&gt;
+&lt;li&gt;r.lbr
+&lt;li&gt;cap.lbr 
+&lt;li&gt;cap-fe.lbr
+&lt;li&gt;captant.lbr
+&lt;li&gt;polcap.lbr
+&lt;li&gt;ipc-smd.lbr
+&lt;/ul&gt;
+All SMD packages are defined according to the IPC specifications and  CECC&lt;p&gt;
+&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;&lt;p&gt;
+&lt;p&gt;
+for Electrolyt Capacitors see also :&lt;p&gt;
+www.bccomponents.com &lt;p&gt;
+www.panasonic.com&lt;p&gt;
+www.kemet.com&lt;p&gt;
+http://www.secc.co.jp/pdf/os_e/2004/e_os_all.pdf &lt;b&gt;(SANYO)&lt;/b&gt;
+&lt;p&gt;
+for trimmer refence see : &lt;u&gt;www.electrospec-inc.com/cross_references/trimpotcrossref.asp&lt;/u&gt;&lt;p&gt;
+
+&lt;table border=0 cellspacing=0 cellpadding=0 width="100%" cellpaddding=0&gt;
+&lt;tr valign="top"&gt;
+
+&lt;! &lt;td width="10"&gt;&amp;nbsp;&lt;/td&gt;
+&lt;td width="90%"&gt;
+
+&lt;b&gt;&lt;font color="#0000FF" size="4"&gt;TRIM-POT CROSS REFERENCE&lt;/font&gt;&lt;/b&gt;
+&lt;P&gt;
+&lt;TABLE BORDER=0 CELLSPACING=1 CELLPADDING=2&gt;
+  &lt;TR&gt;
+    &lt;TD COLSPAN=8&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL&gt;&lt;B&gt;RECTANGULAR MULTI-TURN&lt;/B&gt;&lt;/FONT&gt;
+    &lt;/TD&gt;
+  &lt;/TR&gt;
+  &lt;TR&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;BOURNS&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;BI&amp;nbsp;TECH&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;DALE-VISHAY&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;PHILIPS/MEPCO&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;MURATA&lt;/FONT&gt;
+      &lt;/B&gt;
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+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;PANASONIC&lt;/FONT&gt;
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+&lt;/table&gt;</description>
+<packages>
+<package name="R0805">
+<description>&lt;b&gt;RESISTOR&lt;/b&gt;&lt;p&gt;</description>
+<wire x1="-0.41" y1="0.635" x2="0.41" y2="0.635" width="0.1524" layer="51"/>
+<wire x1="-0.41" y1="-0.635" x2="0.41" y2="-0.635" width="0.1524" layer="51"/>
+<wire x1="-1.973" y1="0.983" x2="1.973" y2="0.983" width="0.0508" layer="39"/>
+<wire x1="1.973" y1="0.983" x2="1.973" y2="-0.983" width="0.0508" layer="39"/>
+<wire x1="1.973" y1="-0.983" x2="-1.973" y2="-0.983" width="0.0508" layer="39"/>
+<wire x1="-1.973" y1="-0.983" x2="-1.973" y2="0.983" width="0.0508" layer="39"/>
+<smd name="1" x="-0.95" y="0" dx="1.3" dy="1.5" layer="1"/>
+<smd name="2" x="0.95" y="0" dx="1.3" dy="1.5" layer="1"/>
+<text x="-0.635" y="1.27" size="1.27" layer="25">&gt;NAME</text>
+<text x="-0.635" y="-2.54" size="1.27" layer="27">&gt;VALUE</text>
+<rectangle x1="0.4064" y1="-0.6985" x2="1.0564" y2="0.7015" layer="51"/>
+<rectangle x1="-1.0668" y1="-0.6985" x2="-0.4168" y2="0.7015" layer="51"/>
+<rectangle x1="-0.1999" y1="-0.5001" x2="0.1999" y2="0.5001" layer="35"/>
+</package>
+</packages>
+</library>
+<library name="pinhead">
+<description>&lt;b&gt;Pin Header Connectors&lt;/b&gt;&lt;p&gt;
+&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
+<packages>
+<package name="1X01">
+<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
+<wire x1="-0.635" y1="1.27" x2="0.635" y2="1.27" width="0.1524" layer="21"/>
+<wire x1="0.635" y1="1.27" x2="1.27" y2="0.635" width="0.1524" layer="21"/>
+<wire x1="1.27" y1="0.635" x2="1.27" y2="-0.635" width="0.1524" layer="21"/>
+<wire x1="1.27" y1="-0.635" x2="0.635" y2="-1.27" width="0.1524" layer="21"/>
+<wire x1="-1.27" y1="0.635" x2="-1.27" y2="-0.635" width="0.1524" layer="21"/>
+<wire x1="-0.635" y1="1.27" x2="-1.27" y2="0.635" width="0.1524" layer="21"/>
+<wire x1="-1.27" y1="-0.635" x2="-0.635" y2="-1.27" width="0.1524" layer="21"/>
+<wire x1="0.635" y1="-1.27" x2="-0.635" y2="-1.27" width="0.1524" layer="21"/>
+<pad name="1" x="0" y="0" drill="1.016" shape="octagon"/>
+<text x="-1.3462" y="1.8288" size="1.27" layer="25" ratio="10">&gt;NAME</text>
+<text x="-1.27" y="-3.175" size="1.27" layer="27">&gt;VALUE</text>
+<rectangle x1="-0.254" y1="-0.254" x2="0.254" y2="0.254" layer="51"/>
+</package>
+</packages>
+</library>
+</libraries>
+<attributes>
+</attributes>
+<variantdefs>
+</variantdefs>
+<classes>
+<class number="0" name="default" width="0" drill="0">
+</class>
+</classes>
+<designrules name="default">
+<description language="de">&lt;b&gt;EAGLE Design Rules&lt;/b&gt;
+&lt;p&gt;
+Die Standard-Design-Rules sind so gewählt, dass sie für 
+die meisten Anwendungen passen. Sollte ihre Platine 
+besondere Anforderungen haben, treffen Sie die erforderlichen
+Einstellungen hier und speichern die Design Rules unter 
+einem neuen Namen ab.</description>
+<description language="en">&lt;b&gt;EAGLE Design Rules&lt;/b&gt;
+&lt;p&gt;
+The default Design Rules have been set to cover
+a wide range of applications. Your particular design
+may have different requirements, so please make the
+necessary adjustments and save your customized
+design rules under a new name.</description>
+<param name="layerSetup" value="(1*16)"/>
+<param name="mtCopper" value="0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm 0.035mm"/>
+<param name="mtIsolate" value="1.5mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm 0.15mm 0.2mm"/>
+<param name="mdWireWire" value="8mil"/>
+<param name="mdWirePad" value="8mil"/>
+<param name="mdWireVia" value="8mil"/>
+<param name="mdPadPad" value="8mil"/>
+<param name="mdPadVia" value="8mil"/>
+<param name="mdViaVia" value="8mil"/>
+<param name="mdSmdPad" value="8mil"/>
+<param name="mdSmdVia" value="8mil"/>
+<param name="mdSmdSmd" value="8mil"/>
+<param name="mdViaViaSameLayer" value="8mil"/>
+<param name="mnLayersViaInSmd" value="2"/>
+<param name="mdCopperDimension" value="40mil"/>
+<param name="mdDrill" value="8mil"/>
+<param name="mdSmdStop" value="0mil"/>
+<param name="msWidth" value="10mil"/>
+<param name="msDrill" value="24mil"/>
+<param name="msMicroVia" value="9.99mm"/>
+<param name="msBlindViaRatio" value="0.5"/>
+<param name="rvPadTop" value="0.25"/>
+<param name="rvPadInner" value="0.25"/>
+<param name="rvPadBottom" value="0.25"/>
+<param name="rvViaOuter" value="0.25"/>
+<param name="rvViaInner" value="0.25"/>
+<param name="rvMicroViaOuter" value="0.25"/>
+<param name="rvMicroViaInner" value="0.25"/>
+<param name="rlMinPadTop" value="10mil"/>
+<param name="rlMaxPadTop" value="20mil"/>
+<param name="rlMinPadInner" value="10mil"/>
+<param name="rlMaxPadInner" value="20mil"/>
+<param name="rlMinPadBottom" value="10mil"/>
+<param name="rlMaxPadBottom" value="20mil"/>
+<param name="rlMinViaOuter" value="8mil"/>
+<param name="rlMaxViaOuter" value="20mil"/>
+<param name="rlMinViaInner" value="8mil"/>
+<param name="rlMaxViaInner" value="20mil"/>
+<param name="rlMinMicroViaOuter" value="4mil"/>
+<param name="rlMaxMicroViaOuter" value="20mil"/>
+<param name="rlMinMicroViaInner" value="4mil"/>
+<param name="rlMaxMicroViaInner" value="20mil"/>
+<param name="psTop" value="-1"/>
+<param name="psBottom" value="-1"/>
+<param name="psFirst" value="-1"/>
+<param name="psElongationLong" value="100"/>
+<param name="psElongationOffset" value="100"/>
+<param name="mvStopFrame" value="1"/>
+<param name="mvCreamFrame" value="0"/>
+<param name="mlMinStopFrame" value="4mil"/>
+<param name="mlMaxStopFrame" value="4mil"/>
+<param name="mlMinCreamFrame" value="0mil"/>
+<param name="mlMaxCreamFrame" value="0mil"/>
+<param name="mlViaStopLimit" value="0mil"/>
+<param name="srRoundness" value="0"/>
+<param name="srMinRoundness" value="0mil"/>
+<param name="srMaxRoundness" value="0mil"/>
+<param name="slThermalIsolate" value="10mil"/>
+<param name="slThermalsForVias" value="0"/>
+<param name="dpMaxLengthDifference" value="10mm"/>
+<param name="dpGapFactor" value="2.5"/>
+<param name="checkGrid" value="0"/>
+<param name="checkAngle" value="0"/>
+<param name="checkFont" value="1"/>
+<param name="checkRestrict" value="1"/>
+<param name="useDiameter" value="13"/>
+<param name="maxErrors" value="50"/>
+</designrules>
+<autorouter>
+<pass name="Default">
+<param name="RoutingGrid" value="50mil"/>
+<param name="tpViaShape" value="round"/>
+<param name="PrefDir.1" value="|"/>
+<param name="PrefDir.2" value="0"/>
+<param name="PrefDir.3" value="0"/>
+<param name="PrefDir.4" value="0"/>
+<param name="PrefDir.5" value="0"/>
+<param name="PrefDir.6" value="0"/>
+<param name="PrefDir.7" value="0"/>
+<param name="PrefDir.8" value="0"/>
+<param name="PrefDir.9" value="0"/>
+<param name="PrefDir.10" value="0"/>
+<param name="PrefDir.11" value="0"/>
+<param name="PrefDir.12" value="0"/>
+<param name="PrefDir.13" value="0"/>
+<param name="PrefDir.14" value="0"/>
+<param name="PrefDir.15" value="0"/>
+<param name="PrefDir.16" value="-"/>
+<param name="cfVia" value="8"/>
+<param name="cfNonPref" value="5"/>
+<param name="cfChangeDir" value="2"/>
+<param name="cfOrthStep" value="2"/>
+<param name="cfDiagStep" value="3"/>
+<param name="cfExtdStep" value="0"/>
+<param name="cfBonusStep" value="1"/>
+<param name="cfMalusStep" value="1"/>
+<param name="cfPadImpact" value="4"/>
+<param name="cfSmdImpact" value="4"/>
+<param name="cfBusImpact" value="0"/>
+<param name="cfHugging" value="3"/>
+<param name="cfAvoid" value="4"/>
+<param name="cfPolygon" value="10"/>
+<param name="cfBase.1" value="0"/>
+<param name="cfBase.2" value="1"/>
+<param name="cfBase.3" value="1"/>
+<param name="cfBase.4" value="1"/>
+<param name="cfBase.5" value="1"/>
+<param name="cfBase.6" value="1"/>
+<param name="cfBase.7" value="1"/>
+<param name="cfBase.8" value="1"/>
+<param name="cfBase.9" value="1"/>
+<param name="cfBase.10" value="1"/>
+<param name="cfBase.11" value="1"/>
+<param name="cfBase.12" value="1"/>
+<param name="cfBase.13" value="1"/>
+<param name="cfBase.14" value="1"/>
+<param name="cfBase.15" value="1"/>
+<param name="cfBase.16" value="0"/>
+<param name="mnVias" value="20"/>
+<param name="mnSegments" value="9999"/>
+<param name="mnExtdSteps" value="9999"/>
+<param name="mnRipupLevel" value="10"/>
+<param name="mnRipupSteps" value="100"/>
+<param name="mnRipupTotal" value="100"/>
+</pass>
+<pass name="Follow-me" refer="Default" active="yes">
+</pass>
+<pass name="Busses" refer="Default" active="yes">
+<param name="cfNonPref" value="4"/>
+<param name="cfBusImpact" value="4"/>
+<param name="cfHugging" value="0"/>
+<param name="mnVias" value="0"/>
+</pass>
+<pass name="Route" refer="Default" active="yes">
+</pass>
+<pass name="Optimize1" refer="Default" active="yes">
+<param name="cfVia" value="99"/>
+<param name="cfExtdStep" value="10"/>
+<param name="cfHugging" value="1"/>
+<param name="mnExtdSteps" value="1"/>
+<param name="mnRipupLevel" value="0"/>
+</pass>
+<pass name="Optimize2" refer="Optimize1" active="yes">
+<param name="cfNonPref" value="0"/>
+<param name="cfChangeDir" value="6"/>
+<param name="cfExtdStep" value="0"/>
+<param name="cfBonusStep" value="2"/>
+<param name="cfMalusStep" value="2"/>
+<param name="cfPadImpact" value="2"/>
+<param name="cfSmdImpact" value="2"/>
+<param name="cfHugging" value="0"/>
+</pass>
+<pass name="Optimize3" refer="Optimize2" active="yes">
+<param name="cfChangeDir" value="8"/>
+<param name="cfPadImpact" value="0"/>
+<param name="cfSmdImpact" value="0"/>
+</pass>
+<pass name="Optimize4" refer="Optimize3" active="yes">
+<param name="cfChangeDir" value="25"/>
+</pass>
+</autorouter>
+<elements>
+<element name="R1" library="rcl" package="R0805" value="1K" x="8.636" y="2.54" smashed="yes">
+<attribute name="NAME" x="6.223" y="4.064" size="1.27" layer="25"/>
+<attribute name="VALUE" x="9.271" y="4.064" size="1.27" layer="27"/>
+</element>
+<element name="IN" library="pinhead" package="1X01" value="" x="1.778" y="2.54" smashed="yes">
+<attribute name="NAME" x="0.6858" y="4.3688" size="1.27" layer="25" ratio="10"/>
+<attribute name="VALUE" x="0.508" y="-0.635" size="1.27" layer="27"/>
+</element>
+<element name="OUT" library="pinhead" package="1X01" value="" x="16.002" y="2.54" smashed="yes">
+<attribute name="NAME" x="13.6398" y="4.3688" size="1.27" layer="25" ratio="10"/>
+<attribute name="VALUE" x="14.732" y="-0.635" size="1.27" layer="27"/>
+</element>
+</elements>
+<signals>
+<signal name="N$2">
+<contactref element="R1" pad="2"/>
+<contactref element="OUT" pad="1"/>
+<wire x1="9.586" y1="2.54" x2="12.446" y2="2.54" width="0.4064" layer="1"/>
+<via x="12.446" y="2.54" extent="1-16" drill="0.6"/>
+<wire x1="12.446" y1="2.54" x2="16.002" y2="2.54" width="0.4064" layer="16"/>
+</signal>
+<signal name="N$1">
+<contactref element="IN" pad="1"/>
+<contactref element="R1" pad="1"/>
+<wire x1="1.778" y1="2.54" x2="7.686" y2="2.54" width="0.4064" layer="1"/>
+</signal>
+<signal name="GND">
+<polygon width="0.4064" layer="16">
+<vertex x="-0.254" y="-0.254"/>
+<vertex x="-0.254" y="6.35"/>
+<vertex x="18.034" y="6.35"/>
+<vertex x="18.034" y="-0.254"/>
+</polygon>
+<polygon width="0.4064" layer="1">
+<vertex x="-0.508" y="6.604"/>
+<vertex x="18.288" y="6.604"/>
+<vertex x="18.288" y="-0.508"/>
+<vertex x="-0.508" y="-0.508"/>
+</polygon>
+</signal>
+</signals>
+</board>
+</drawing>
+</eagle>
diff --git a/samples/Eagle/Eagle.sch b/samples/Eagle/Eagle.sch
new file mode 100644
index 00000000..5a72a868
--- /dev/null
+++ b/samples/Eagle/Eagle.sch
@@ -0,0 +1,3612 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE eagle SYSTEM "eagle.dtd">
+<eagle version="6.3">
+<drawing>
+<settings>
+<setting alwaysvectorfont="no"/>
+<setting verticaltext="up"/>
+</settings>
+<grid distance="0.1" unitdist="inch" unit="inch" style="lines" multiple="1" display="no" altdistance="0.01" altunitdist="inch" altunit="inch"/>
+<layers>
+<layer number="1" name="Top" color="4" fill="1" visible="no" active="no"/>
+<layer number="2" name="Route2" color="1" fill="3" visible="no" active="no"/>
+<layer number="3" name="Route3" color="4" fill="3" visible="no" active="no"/>
+<layer number="4" name="Route4" color="1" fill="4" visible="no" active="no"/>
+<layer number="5" name="Route5" color="4" fill="4" visible="no" active="no"/>
+<layer number="6" name="Route6" color="1" fill="8" visible="no" active="no"/>
+<layer number="7" name="Route7" color="4" fill="8" visible="no" active="no"/>
+<layer number="8" name="Route8" color="1" fill="2" visible="no" active="no"/>
+<layer number="9" name="Route9" color="4" fill="2" visible="no" active="no"/>
+<layer number="10" name="Route10" color="1" fill="7" visible="no" active="no"/>
+<layer number="11" name="Route11" color="4" fill="7" visible="no" active="no"/>
+<layer number="12" name="Route12" color="1" fill="5" visible="no" active="no"/>
+<layer number="13" name="Route13" color="4" fill="5" visible="no" active="no"/>
+<layer number="14" name="Route14" color="1" fill="6" visible="no" active="no"/>
+<layer number="15" name="Route15" color="4" fill="6" visible="no" active="no"/>
+<layer number="16" name="Bottom" color="1" fill="1" visible="no" active="no"/>
+<layer number="17" name="Pads" color="2" fill="1" visible="no" active="no"/>
+<layer number="18" name="Vias" color="2" fill="1" visible="no" active="no"/>
+<layer number="19" name="Unrouted" color="6" fill="1" visible="no" active="no"/>
+<layer number="20" name="Dimension" color="15" fill="1" visible="no" active="no"/>
+<layer number="21" name="tPlace" color="7" fill="1" visible="no" active="no"/>
+<layer number="22" name="bPlace" color="7" fill="1" visible="no" active="no"/>
+<layer number="23" name="tOrigins" color="15" fill="1" visible="no" active="no"/>
+<layer number="24" name="bOrigins" color="15" fill="1" visible="no" active="no"/>
+<layer number="25" name="tNames" color="7" fill="1" visible="no" active="no"/>
+<layer number="26" name="bNames" color="7" fill="1" visible="no" active="no"/>
+<layer number="27" name="tValues" color="7" fill="1" visible="no" active="no"/>
+<layer number="28" name="bValues" color="7" fill="1" visible="no" active="no"/>
+<layer number="29" name="tStop" color="7" fill="3" visible="no" active="no"/>
+<layer number="30" name="bStop" color="7" fill="6" visible="no" active="no"/>
+<layer number="31" name="tCream" color="7" fill="4" visible="no" active="no"/>
+<layer number="32" name="bCream" color="7" fill="5" visible="no" active="no"/>
+<layer number="33" name="tFinish" color="6" fill="3" visible="no" active="no"/>
+<layer number="34" name="bFinish" color="6" fill="6" visible="no" active="no"/>
+<layer number="35" name="tGlue" color="7" fill="4" visible="no" active="no"/>
+<layer number="36" name="bGlue" color="7" fill="5" visible="no" active="no"/>
+<layer number="37" name="tTest" color="7" fill="1" visible="no" active="no"/>
+<layer number="38" name="bTest" color="7" fill="1" visible="no" active="no"/>
+<layer number="39" name="tKeepout" color="4" fill="11" visible="no" active="no"/>
+<layer number="40" name="bKeepout" color="1" fill="11" visible="no" active="no"/>
+<layer number="41" name="tRestrict" color="4" fill="10" visible="no" active="no"/>
+<layer number="42" name="bRestrict" color="1" fill="10" visible="no" active="no"/>
+<layer number="43" name="vRestrict" color="2" fill="10" visible="no" active="no"/>
+<layer number="44" name="Drills" color="7" fill="1" visible="no" active="no"/>
+<layer number="45" name="Holes" color="7" fill="1" visible="no" active="no"/>
+<layer number="46" name="Milling" color="3" fill="1" visible="no" active="no"/>
+<layer number="47" name="Measures" color="7" fill="1" visible="no" active="no"/>
+<layer number="48" name="Document" color="7" fill="1" visible="no" active="no"/>
+<layer number="49" name="Reference" color="7" fill="1" visible="no" active="no"/>
+<layer number="51" name="tDocu" color="7" fill="1" visible="no" active="no"/>
+<layer number="52" name="bDocu" color="7" fill="1" visible="no" active="no"/>
+<layer number="91" name="Nets" color="2" fill="1" visible="yes" active="yes"/>
+<layer number="92" name="Busses" color="1" fill="1" visible="yes" active="yes"/>
+<layer number="93" name="Pins" color="2" fill="1" visible="no" active="yes"/>
+<layer number="94" name="Symbols" color="4" fill="1" visible="yes" active="yes"/>
+<layer number="95" name="Names" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="96" name="Values" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="97" name="Info" color="7" fill="1" visible="yes" active="yes"/>
+<layer number="98" name="Guide" color="6" fill="1" visible="yes" active="yes"/>
+</layers>
+<schematic xreflabel="%F%N/%S.%C%R" xrefpart="/%S.%C%R">
+<libraries>
+<library name="frames">
+<description>&lt;b&gt;Frames for Sheet and Layout&lt;/b&gt;</description>
+<packages>
+</packages>
+<symbols>
+<symbol name="A4L-LOC">
+<wire x1="256.54" y1="3.81" x2="256.54" y2="8.89" width="0.1016" layer="94"/>
+<wire x1="256.54" y1="8.89" x2="256.54" y2="13.97" width="0.1016" layer="94"/>
+<wire x1="256.54" y1="13.97" x2="256.54" y2="19.05" width="0.1016" layer="94"/>
+<wire x1="256.54" y1="19.05" x2="256.54" y2="24.13" width="0.1016" layer="94"/>
+<wire x1="161.29" y1="3.81" x2="161.29" y2="24.13" width="0.1016" layer="94"/>
+<wire x1="161.29" y1="24.13" x2="215.265" y2="24.13" width="0.1016" layer="94"/>
+<wire x1="215.265" y1="24.13" x2="256.54" y2="24.13" width="0.1016" layer="94"/>
+<wire x1="246.38" y1="3.81" x2="246.38" y2="8.89" width="0.1016" layer="94"/>
+<wire x1="246.38" y1="8.89" x2="256.54" y2="8.89" width="0.1016" layer="94"/>
+<wire x1="246.38" y1="8.89" x2="215.265" y2="8.89" width="0.1016" layer="94"/>
+<wire x1="215.265" y1="8.89" x2="215.265" y2="3.81" width="0.1016" layer="94"/>
+<wire x1="215.265" y1="8.89" x2="215.265" y2="13.97" width="0.1016" layer="94"/>
+<wire x1="215.265" y1="13.97" x2="256.54" y2="13.97" width="0.1016" layer="94"/>
+<wire x1="215.265" y1="13.97" x2="215.265" y2="19.05" width="0.1016" layer="94"/>
+<wire x1="215.265" y1="19.05" x2="256.54" y2="19.05" width="0.1016" layer="94"/>
+<wire x1="215.265" y1="19.05" x2="215.265" y2="24.13" width="0.1016" layer="94"/>
+<text x="217.17" y="15.24" size="2.54" layer="94" font="vector">&gt;DRAWING_NAME</text>
+<text x="217.17" y="10.16" size="2.286" layer="94" font="vector">&gt;LAST_DATE_TIME</text>
+<text x="230.505" y="5.08" size="2.54" layer="94" font="vector">&gt;SHEET</text>
+<text x="216.916" y="4.953" size="2.54" layer="94" font="vector">Sheet:</text>
+<frame x1="0" y1="0" x2="260.35" y2="179.07" columns="6" rows="4" layer="94"/>
+</symbol>
+</symbols>
+<devicesets>
+<deviceset name="A4L-LOC" prefix="FRAME" uservalue="yes">
+<description>&lt;b&gt;FRAME&lt;/b&gt;&lt;p&gt;
+DIN A4, landscape with location and doc. field</description>
+<gates>
+<gate name="G$1" symbol="A4L-LOC" x="0" y="0"/>
+</gates>
+<devices>
+<device name="">
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+</devices>
+</deviceset>
+</devicesets>
+</library>
+<library name="rcl">
+<description>&lt;b&gt;Resistors, Capacitors, Inductors&lt;/b&gt;&lt;p&gt;
+Based on the previous libraries:
+&lt;ul&gt;
+&lt;li&gt;r.lbr
+&lt;li&gt;cap.lbr 
+&lt;li&gt;cap-fe.lbr
+&lt;li&gt;captant.lbr
+&lt;li&gt;polcap.lbr
+&lt;li&gt;ipc-smd.lbr
+&lt;/ul&gt;
+All SMD packages are defined according to the IPC specifications and  CECC&lt;p&gt;
+&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;&lt;p&gt;
+&lt;p&gt;
+for Electrolyt Capacitors see also :&lt;p&gt;
+www.bccomponents.com &lt;p&gt;
+www.panasonic.com&lt;p&gt;
+www.kemet.com&lt;p&gt;
+http://www.secc.co.jp/pdf/os_e/2004/e_os_all.pdf &lt;b&gt;(SANYO)&lt;/b&gt;
+&lt;p&gt;
+for trimmer refence see : &lt;u&gt;www.electrospec-inc.com/cross_references/trimpotcrossref.asp&lt;/u&gt;&lt;p&gt;
+
+&lt;table border=0 cellspacing=0 cellpadding=0 width="100%" cellpaddding=0&gt;
+&lt;tr valign="top"&gt;
+
+&lt;! &lt;td width="10"&gt;&amp;nbsp;&lt;/td&gt;
+&lt;td width="90%"&gt;
+
+&lt;b&gt;&lt;font color="#0000FF" size="4"&gt;TRIM-POT CROSS REFERENCE&lt;/font&gt;&lt;/b&gt;
+&lt;P&gt;
+&lt;TABLE BORDER=0 CELLSPACING=1 CELLPADDING=2&gt;
+  &lt;TR&gt;
+    &lt;TD COLSPAN=8&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL&gt;&lt;B&gt;RECTANGULAR MULTI-TURN&lt;/B&gt;&lt;/FONT&gt;
+    &lt;/TD&gt;
+  &lt;/TR&gt;
+  &lt;TR&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;BOURNS&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;BI&amp;nbsp;TECH&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;DALE-VISHAY&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;PHILIPS/MEPCO&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;MURATA&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;PANASONIC&lt;/FONT&gt;
+      &lt;/B&gt;
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+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;SPECTROL&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;
+    &lt;TD ALIGN=CENTER&gt;
+      &lt;B&gt;
+      &lt;FONT SIZE=3 FACE=ARIAL color="#FF0000"&gt;MILSPEC&lt;/FONT&gt;
+      &lt;/B&gt;
+    &lt;/TD&gt;&lt;TD&gt;&amp;nbsp;&lt;/TD&gt;
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+    &lt;/TD&gt;
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+    &lt;TD COLSPAN=8&gt;&amp;nbsp;
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+    &lt;/TD&gt;
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+      &lt;FONT SIZE=3 FACE=ARIAL&gt;&lt;B&gt;DALE-VISHAY&lt;/B&gt;&lt;/FONT&gt;
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+<description>&lt;b&gt;RESISTOR&lt;/b&gt; chip&lt;p&gt;
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+<description>&lt;b&gt;Bulk Metal® Foil Technology&lt;/b&gt;, Tubular Axial Lead Resistors, Meets or Exceeds MIL-R-39005 Requirements&lt;p&gt;
+MIL SIZE RBR53&lt;br&gt;
+Source: VISHAY .. vta56.pdf</description>
+<wire x1="-12.065" y1="0" x2="-10.795" y2="0" width="0.6096" layer="51"/>
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+<wire x1="10.795" y1="0" x2="12.065" y2="0" width="0.6096" layer="51"/>
+<pad name="1" x="-12.065" y="0" drill="1.1" shape="octagon"/>
+<pad name="2" x="12.065" y="0" drill="1.1" shape="octagon"/>
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+<rectangle x1="9.8425" y1="-0.3048" x2="10.795" y2="0.3048" layer="21"/>
+</package>
+<package name="VTA54">
+<description>&lt;b&gt;Bulk Metal® Foil Technology&lt;/b&gt;, Tubular Axial Lead Resistors, Meets or Exceeds MIL-R-39005 Requirements&lt;p&gt;
+MIL SIZE RBR54&lt;br&gt;
+Source: VISHAY .. vta56.pdf</description>
+<wire x1="-12.065" y1="0" x2="-10.795" y2="0" width="0.6096" layer="51"/>
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+<pad name="2" x="12.065" y="0" drill="1.1" shape="octagon"/>
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+<rectangle x1="-10.795" y1="-0.3048" x2="-9.8425" y2="0.3048" layer="21"/>
+<rectangle x1="9.8425" y1="-0.3048" x2="10.795" y2="0.3048" layer="21"/>
+</package>
+<package name="VTA55">
+<description>&lt;b&gt;Bulk Metal® Foil Technology&lt;/b&gt;, Tubular Axial Lead Resistors, Meets or Exceeds MIL-R-39005 Requirements&lt;p&gt;
+MIL SIZE RBR55&lt;br&gt;
+Source: VISHAY .. vta56.pdf</description>
+<wire x1="-8.255" y1="0" x2="-6.985" y2="0" width="0.6096" layer="51"/>
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+<text x="-3.81" y="3.81" size="1.27" layer="25" ratio="10">&gt;NAME</text>
+<text x="-3.175" y="-0.635" size="1.27" layer="27" ratio="10">&gt;VALUE</text>
+<rectangle x1="-6.985" y1="-0.3048" x2="-6.35" y2="0.3048" layer="21"/>
+<rectangle x1="6.35" y1="-0.3048" x2="6.985" y2="0.3048" layer="21"/>
+</package>
+<package name="VTA56">
+<description>&lt;b&gt;Bulk Metal® Foil Technology&lt;/b&gt;, Tubular Axial Lead Resistors, Meets or Exceeds MIL-R-39005 Requirements&lt;p&gt;
+MIL SIZE RBR56&lt;br&gt;
+Source: VISHAY .. vta56.pdf</description>
+<wire x1="-6.35" y1="0" x2="-5.08" y2="0" width="0.6096" layer="51"/>
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+</package>
+<package name="R4527">
+<description>&lt;b&gt;Package 4527&lt;/b&gt;&lt;p&gt;
+Source: http://www.vishay.com/docs/31059/wsrhigh.pdf</description>
+<wire x1="-5.675" y1="-3.375" x2="5.65" y2="-3.375" width="0.2032" layer="21"/>
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+<text x="-5.715" y="-5.08" size="1.27" layer="27">&gt;VALUE</text>
+</package>
+<package name="WSC0001">
+<description>&lt;b&gt;Wirewound Resistors, Precision Power&lt;/b&gt;&lt;p&gt;
+Source: VISHAY wscwsn.pdf</description>
+<wire x1="-3.075" y1="1.8" x2="-3.075" y2="-1.8" width="0.2032" layer="51"/>
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+<text x="-2.544" y="-3.501" size="1.27" layer="27">&gt;VALUE</text>
+</package>
+<package name="WSC0002">
+<description>&lt;b&gt;Wirewound Resistors, Precision Power&lt;/b&gt;&lt;p&gt;
+Source: VISHAY wscwsn.pdf</description>
+<wire x1="-5.55" y1="3.375" x2="-5.55" y2="-3.375" width="0.2032" layer="51"/>
+<wire x1="-5.55" y1="-3.375" x2="5.55" y2="-3.375" width="0.2032" layer="21"/>
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+</package>
+<package name="WSC01/2">
+<description>&lt;b&gt;Wirewound Resistors, Precision Power&lt;/b&gt;&lt;p&gt;
+Source: VISHAY wscwsn.pdf</description>
+<wire x1="-2.45" y1="1.475" x2="-2.45" y2="-1.475" width="0.2032" layer="51"/>
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+<text x="-2.544" y="-3.176" size="1.27" layer="27">&gt;VALUE</text>
+</package>
+<package name="WSC2515">
+<description>&lt;b&gt;Wirewound Resistors, Precision Power&lt;/b&gt;&lt;p&gt;
+Source: VISHAY wscwsn.pdf</description>
+<wire x1="-3.075" y1="1.8" x2="-3.075" y2="-1.8" width="0.2032" layer="51"/>
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+<text x="-3.2" y="-3.4" size="1.27" layer="27">&gt;VALUE</text>
+</package>
+<package name="WSC4527">
+<description>&lt;b&gt;Wirewound Resistors, Precision Power&lt;/b&gt;&lt;p&gt;
+Source: VISHAY wscwsn.pdf</description>
+<wire x1="-5.675" y1="3.4" x2="-5.675" y2="-3.375" width="0.2032" layer="51"/>
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+</package>
+<package name="WSC6927">
+<description>&lt;b&gt;Wirewound Resistors, Precision Power&lt;/b&gt;&lt;p&gt;
+Source: VISHAY wscwsn.pdf</description>
+<wire x1="-8.65" y1="3.375" x2="-8.65" y2="-3.375" width="0.2032" layer="51"/>
+<wire x1="-8.65" y1="-3.375" x2="8.65" y2="-3.375" width="0.2032" layer="21"/>
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+</package>
+<package name="R1218">
+<description>&lt;b&gt;CRCW1218 Thick Film, Rectangular Chip Resistors&lt;/b&gt;&lt;p&gt;
+Source: http://www.vishay.com .. dcrcw.pdf</description>
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+<rectangle x1="0.9144" y1="-2.3" x2="1.6645" y2="2.3" layer="51"/>
+</package>
+<package name="1812X7R">
+<description>&lt;b&gt;Chip Monolithic Ceramic Capacitors&lt;/b&gt; Medium Voltage High Capacitance for General Use&lt;p&gt;
+Source: http://www.murata.com .. GRM43DR72E224KW01.pdf</description>
+<wire x1="-1.1" y1="1.5" x2="1.1" y2="1.5" width="0.2032" layer="51"/>
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+<device name="R0805" package="R0805">
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+<technologies>
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+<device name="R0805W" package="R0805W">
+<connects>
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+<technologies>
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+</device>
+<device name="R1005" package="R1005">
+<connects>
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+<technologies>
+<technology name=""/>
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+<device name="R1206" package="R1206">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
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+<technologies>
+<technology name=""/>
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+<device name="R1206W" package="R1206W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
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+<technologies>
+<technology name=""/>
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+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R1210W" package="R1210W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R2010" package="R2010">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R2010W" package="R2010W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R2012" package="R2012">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R2012W" package="R2012W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R2512" package="R2512">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R2512W" package="R2512W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R3216" package="R3216">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R3216W" package="R3216W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R3225" package="R3225">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R3225W" package="R3225W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R5025" package="R5025">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R5025W" package="R5025W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R6332" package="R6332">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R6332W" package="R6332W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="M0805" package="M0805">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="M1206" package="M1206">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="M1406" package="M1406">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="M2012" package="M2012">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="M2309" package="M2309">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="M3216" package="M3216">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="M3516" package="M3516">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="M5923" package="M5923">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0204/5" package="0204/5">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0204/7" package="0204/7">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0207/10" package="0207/10">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0207/12" package="0207/12">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0207/15" package="0207/15">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0207/2V" package="0207/2V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0207/5V" package="0207/5V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0207/7" package="0207/7">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0309/10" package="0309/10">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0309/12" package="0309/12">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0411/12" package="0411/12">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0411/15" package="0411/15">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0411/3V" package="0411V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0414/15" package="0414/15">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0414/5V" package="0414V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0617/17" package="0617/17">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0617/22" package="0617/22">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0617/5V" package="0617V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0922/22" package="0922/22">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0613/5V" package="P0613V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0613/15" package="P0613/15">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0817/22" package="P0817/22">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0817/7V" package="P0817V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="V234/12" package="V234/12">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="V235/17" package="V235/17">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="V526-0" package="V526-0">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="MELF0102AX" package="MINI_MELF-0102AX">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0922V" package="0922V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="MELF0102R" package="MINI_MELF-0102R">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="MELF0102W" package="MINI_MELF-0102W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="MELF0204R" package="MINI_MELF-0204R">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="MELF0204W" package="MINI_MELF-0204W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="MELF0207R" package="MINI_MELF-0207R">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="MELF0207W" package="MINI_MELF-0207W">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="RDH/15" package="RDH/15">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0204/2V" package="0204V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="0309/V" package="0309V">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R0201" package="R0201">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="VMTA55" package="VMTA55">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="VMTB60" package="VMTB60">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="VTA52" package="VTA52">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="VTA53" package="VTA53">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="VTA54" package="VTA54">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="VTA55" package="VTA55">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="VTA56" package="VTA56">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R4527" package="R4527">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="WSC0001" package="WSC0001">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="WSC0002" package="WSC0002">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="WSC01/2" package="WSC01/2">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="WSC2515" package="WSC2515">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="WSC4527" package="WSC4527">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="WSC6927" package="WSC6927">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="R1218" package="R1218">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+<device name="1812X7R" package="1812X7R">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+<connect gate="G$1" pin="2" pad="2"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+</devices>
+</deviceset>
+</devicesets>
+</library>
+<library name="pinhead">
+<description>&lt;b&gt;Pin Header Connectors&lt;/b&gt;&lt;p&gt;
+&lt;author&gt;Created by librarian@cadsoft.de&lt;/author&gt;</description>
+<packages>
+<package name="1X01">
+<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
+<wire x1="-0.635" y1="1.27" x2="0.635" y2="1.27" width="0.1524" layer="21"/>
+<wire x1="0.635" y1="1.27" x2="1.27" y2="0.635" width="0.1524" layer="21"/>
+<wire x1="1.27" y1="0.635" x2="1.27" y2="-0.635" width="0.1524" layer="21"/>
+<wire x1="1.27" y1="-0.635" x2="0.635" y2="-1.27" width="0.1524" layer="21"/>
+<wire x1="-1.27" y1="0.635" x2="-1.27" y2="-0.635" width="0.1524" layer="21"/>
+<wire x1="-0.635" y1="1.27" x2="-1.27" y2="0.635" width="0.1524" layer="21"/>
+<wire x1="-1.27" y1="-0.635" x2="-0.635" y2="-1.27" width="0.1524" layer="21"/>
+<wire x1="0.635" y1="-1.27" x2="-0.635" y2="-1.27" width="0.1524" layer="21"/>
+<pad name="1" x="0" y="0" drill="1.016" shape="octagon"/>
+<text x="-1.3462" y="1.8288" size="1.27" layer="25" ratio="10">&gt;NAME</text>
+<text x="-1.27" y="-3.175" size="1.27" layer="27">&gt;VALUE</text>
+<rectangle x1="-0.254" y1="-0.254" x2="0.254" y2="0.254" layer="51"/>
+</package>
+</packages>
+<symbols>
+<symbol name="PINHD1">
+<wire x1="-6.35" y1="-2.54" x2="1.27" y2="-2.54" width="0.4064" layer="94"/>
+<wire x1="1.27" y1="-2.54" x2="1.27" y2="2.54" width="0.4064" layer="94"/>
+<wire x1="1.27" y1="2.54" x2="-6.35" y2="2.54" width="0.4064" layer="94"/>
+<wire x1="-6.35" y1="2.54" x2="-6.35" y2="-2.54" width="0.4064" layer="94"/>
+<text x="-6.35" y="3.175" size="1.778" layer="95">&gt;NAME</text>
+<text x="-6.35" y="-5.08" size="1.778" layer="96">&gt;VALUE</text>
+<pin name="1" x="-2.54" y="0" visible="pad" length="short" direction="pas" function="dot"/>
+</symbol>
+</symbols>
+<devicesets>
+<deviceset name="PINHD-1X1" prefix="JP" uservalue="yes">
+<description>&lt;b&gt;PIN HEADER&lt;/b&gt;</description>
+<gates>
+<gate name="G$1" symbol="PINHD1" x="0" y="0"/>
+</gates>
+<devices>
+<device name="" package="1X01">
+<connects>
+<connect gate="G$1" pin="1" pad="1"/>
+</connects>
+<technologies>
+<technology name=""/>
+</technologies>
+</device>
+</devices>
+</deviceset>
+</devicesets>
+</library>
+</libraries>
+<attributes>
+</attributes>
+<variantdefs>
+</variantdefs>
+<classes>
+<class number="0" name="default" width="0" drill="0">
+</class>
+</classes>
+<parts>
+<part name="FRAME2" library="frames" deviceset="A4L-LOC" device=""/>
+<part name="R1" library="rcl" deviceset="R-US_" device="R0805" value="1K"/>
+<part name="IN" library="pinhead" deviceset="PINHD-1X1" device=""/>
+<part name="OUT" library="pinhead" deviceset="PINHD-1X1" device=""/>
+</parts>
+<sheets>
+<sheet>
+<plain>
+</plain>
+<instances>
+<instance part="FRAME2" gate="G$1" x="0" y="0"/>
+<instance part="R1" gate="G$1" x="127" y="93.98"/>
+<instance part="IN" gate="G$1" x="114.3" y="93.98"/>
+<instance part="OUT" gate="G$1" x="144.78" y="93.98"/>
+</instances>
+<busses>
+</busses>
+<nets>
+<net name="N$2" class="0">
+<segment>
+<pinref part="R1" gate="G$1" pin="2"/>
+<pinref part="OUT" gate="G$1" pin="1"/>
+<wire x1="132.08" y1="93.98" x2="142.24" y2="93.98" width="0.1524" layer="91"/>
+</segment>
+</net>
+<net name="N$1" class="0">
+<segment>
+<pinref part="IN" gate="G$1" pin="1"/>
+<pinref part="R1" gate="G$1" pin="1"/>
+<wire x1="111.76" y1="93.98" x2="121.92" y2="93.98" width="0.1524" layer="91"/>
+</segment>
+</net>
+</nets>
+</sheet>
+</sheets>
+</schematic>
+</drawing>
+</eagle>
diff --git a/samples/Frege/CommandLineClock.fr b/samples/Frege/CommandLineClock.fr
new file mode 100644
index 00000000..5bdde621
--- /dev/null
+++ b/samples/Frege/CommandLineClock.fr
@@ -0,0 +1,44 @@
+{-- 
+    This program displays the
+    current time on stdandard output
+    every other second.
+    -}
+    
+module examples.CommandLineClock where
+
+data Date = native java.util.Date where
+    native new :: () -> IO (MutableIO Date)     -- new Date()
+    native toString :: Mutable s Date -> ST s String    -- d.toString()
+
+--- 'IO' action to give us the current time as 'String'
+current :: IO String
+current = do
+    d <- Date.new ()
+    d.toString
+
+{- 
+    "java.lang.Thread.sleep" takes a "long" and
+    returns nothing, but may throw an InterruptedException.
+    This is without doubt an IO action.
+    
+    public static void sleep(long millis)
+                  throws InterruptedException
+    
+    Encoded in Frege:
+    - argument type  long   Long
+    - result         void   ()
+    - does IO               IO ()
+    - throws ...            throws ....
+     
+-}
+-- .... defined in frege.java.Lang
+-- native sleep java.lang.Thread.sleep :: Long -> IO () throws InterruptedException
+
+      
+main args =  
+    forever do
+        current >>= print
+        print "\r"
+        stdout.flush
+        Thread.sleep 999
+                
\ No newline at end of file
diff --git a/samples/Frege/Concurrent.fr b/samples/Frege/Concurrent.fr
new file mode 100644
index 00000000..5f9df994
--- /dev/null
+++ b/samples/Frege/Concurrent.fr
@@ -0,0 +1,147 @@
+module examples.Concurrent where
+
+import System.Random
+import Java.Net (URL)
+import Control.Concurrent as C
+
+main2 args = do
+    m <- newEmptyMVar
+    forkIO do
+        m.put 'x'
+        m.put 'y' 
+        m.put 'z'
+    replicateM_ 3 do
+        c <- m.take
+        print "got: "
+        println c  
+        
+            
+example1 = do
+    forkIO (replicateM_ 100000 (putChar 'a'))
+    replicateM_ 100000 (putChar 'b')
+
+example2 =  do
+    s <- getLine
+    case s.long of
+        Right n -> forkIO (setReminder n) >> example2
+        Left _  -> println ("exiting ...")
+    
+setReminder :: Long -> IO ()
+setReminder n = do
+        println ("Ok, I remind you in " ++ show n ++ " seconds")
+        Thread.sleep (1000L*n)
+        println (show n ++ " seconds is up!")
+
+table = "table"
+            
+mainPhil _ = do
+    [fork1,fork2,fork3,fork4,fork5] <- mapM MVar.new [1..5]
+    forkIO (philosopher "Kant" fork5 fork1)
+    forkIO (philosopher "Locke" fork1 fork2)
+    forkIO (philosopher "Wittgenstein" fork2 fork3)
+    forkIO (philosopher "Nozick" fork3 fork4)
+    forkIO (philosopher "Mises" fork4 fork5)
+    return ()    
+
+philosopher :: String -> MVar Int -> MVar Int -> IO ()
+philosopher me left right = do
+    g <- Random.newStdGen
+    let phil g  = do
+            let (tT,g1) = Random.randomR (60L, 120L) g
+                (eT, g2)  = Random.randomR (80L, 160L) g1
+                thinkTime = 300L * tT
+                eatTime   = 300L * eT
+    
+            println(me ++ " is going to the dining room and takes his seat.") 
+            fl <- left.take            
+            println (me ++ " takes up left fork (" ++ show fl ++ ")")
+            rFork <- right.poll
+            case rFork of
+                Just fr -> do 
+                    println (me ++ " takes up right fork. (" ++ show fr ++ ")") 
+                    println (me ++ " is going to eat for " ++ show eatTime ++ "ms")
+                    Thread.sleep eatTime
+                    println (me ++ " finished eating.")
+                    right.put fr
+                    println (me ++ " took down right fork.")
+                    left.put fl
+                    println (me ++ " took down left fork.")
+                    table.notifyAll 
+                    println(me ++ " is going to think for " ++ show thinkTime ++ "ms.")
+                    Thread.sleep thinkTime
+                    phil g2
+                Nothing -> do
+                    println (me ++ " finds right fork is already in use.")
+                    left.put fl
+                    println (me ++ " took down left fork.")
+                    table.notifyAll
+                    println (me ++ " is going to the bar to await notifications from table.")
+                    table.wait
+                    println (me ++ " got notice that something changed at the table.")
+                    phil g2
+            
+        inter :: InterruptedException -> IO ()
+        inter _ = return ()        
+    
+    phil g `catch` inter
+
+    
+getURL xx = do
+        url <- URL.new xx 
+        con <- url.openConnection
+        con.connect
+        is  <- con.getInputStream
+        typ <- con.getContentType
+        -- stderr.println ("content-type is " ++ show typ) 
+        ir  <- InputStreamReader.new is (fromMaybe "UTF-8" (charset typ))
+            `catch` unsupportedEncoding is 
+        br  <- BufferedReader.new ir
+        br.getLines
+    where
+        unsupportedEncoding :: InputStream -> UnsupportedEncodingException -> IO InputStreamReader
+        unsupportedEncoding is x = do
+            stderr.println x.catched
+            InputStreamReader.new is "UTF-8"
+            
+        charset ctyp = do
+            typ <- ctyp
+            case typ of
+                m~´charset=(\S+)´ -> m.group 1
+                _ -> Nothing
+
+    
+type SomeException = Throwable
+
+main ["dining"] = mainPhil []
+        
+main _ =  do
+    m1 <- MVar.newEmpty
+    m2 <- MVar.newEmpty
+    m3 <- MVar.newEmpty
+    
+    forkIO do
+        r <- (catchAll . getURL) "http://www.wikipedia.org/wiki/Haskell"
+        m1.put r
+    
+    forkIO do
+        r <- (catchAll . getURL) "htto://www.wikipedia.org/wiki/Java"
+        m2.put r
+    
+    forkIO do
+        r <- (catchAll . getURL) "http://www.wikipedia.org/wiki/Frege"
+        m3.put r
+    
+    r1 <- m1.take
+    r2 <- m2.take
+    r3 <- m3.take
+    println (result r1, result r2, result r3)
+    -- case r3 of
+    --     Right ss -> mapM_ putStrLn ss
+    --     Left _   -> return ()
+  where
+    result :: (SomeException|[String]) -> (String|Int)
+    result (Left x)  = Left x.getClass.getName
+    result (Right y) = (Right . sum . map length)  y
+    -- mapM_ putStrLn r2
+
+        
\ No newline at end of file
diff --git a/samples/Frege/Sudoku.fr b/samples/Frege/Sudoku.fr
new file mode 100644
index 00000000..88bfd966
--- /dev/null
+++ b/samples/Frege/Sudoku.fr
@@ -0,0 +1,561 @@
+package examples.Sudoku where
+
+import Data.TreeMap (Tree, keys)
+import Data.List as DL hiding (find, union)
+
+
+type Element    = Int           -- 1,2,3,4,5,6,7,8,9
+type Zelle      = [Element]     -- set of candidates
+type Position   = Int           -- 0..80
+type Feld       = (Position, Zelle)
+type Brett      = [Feld]
+
+--- data type for assumptions and conclusions
+data Assumption =
+              !ISNOT Position Element
+            | !IS    Position Element
+
+
+derive Eq Assumption
+derive Ord Assumption
+instance Show Assumption where
+    show (IS p e)    = pname p ++ "=" ++ e.show
+    show (ISNOT p e) = pname p ++ "/" ++ e.show
+
+showcs cs = joined " " (map Assumption.show cs)
+
+elements :: [Element]           -- all possible elements
+elements = [1 .. 9]
+
+{-
+    a  b  c   d  e  f   g  h  i
+     0  1  2 | 3  4  5 | 6  7  8    1
+     9 10 11 |12 13 14 |15 16 17    2
+    18 19 20 |21 22 23 |24 25 26    3
+    ---------|---------|--------
+    27 28 29 |30 31 32 |33 34 35    4
+    36 37 38 |39 40 41 |42 43 44    5
+    45 46 47 |48 49 50 |51 52 53    6
+    ---------|---------|--------
+    54 55 56 |57 58 59 |60 61 62    7
+    63 64 65 |66 67 68 |69 70 71    8
+    72 73 74 |75 76 77 |78 79 80    9
+-}
+
+positions :: [Position]         -- all possible positions
+positions = [0..80]
+rowstarts :: [Position]         -- all positions where a row is starting
+rowstarts =  [0,9,18,27,36,45,54,63,72]
+colstarts :: [Position]         -- all positions where a column is starting
+colstarts =  [0,1,2,3,4,5,6,7,8]
+boxstarts :: [Position]         -- all positions where a box is starting
+boxstarts =  [0,3,6,27,30,33,54,57,60]
+boxmuster :: [Position]         -- pattern for a box, by adding upper left position results in real box
+boxmuster =  [0,1,2,9,10,11,18,19,20]
+
+
+--- extract field for position
+getf :: Brett -> Position  -> Feld
+getf (f:fs) p
+    | fst f == p = f
+    | otherwise  = getf fs p
+getf [] p = (p,[])
+
+
+--- extract cell for position
+getc :: Brett -> Position -> Zelle
+getc b p = snd (getf b p)
+
+--- compute the list of all positions that belong to the same row as a given position
+row :: Position -> [Position]
+row p = [z..(z+8)] where z = (p `quot` 9) * 9
+
+--- compute the list of all positions that belong to the same col as a given position
+col :: Position -> [Position]
+col p = map (c+) rowstarts where c = p `mod` 9
+
+--- compute the list of all positions that belong to the same box as a given position
+box :: Position -> [Position]
+box p  = map (z+) boxmuster where
+    ri = p `div` 27 * 27    -- 0, 27 or 54, depending on row
+    ci = p `mod` 9          -- column index 0..8, 0,1,2 is left, 3,4,5 is middle, 6,7,8 is right
+    cs = ci `div` 3 * 3     -- 0, 3 or 6
+    z  = ri + cs
+
+--- check if candidate set has exactly one member, i.e. field has been solved
+single :: Zelle -> Bool
+single [_] = true
+single _   = false
+
+unsolved :: Zelle -> Bool
+unsolved [_] = false
+unsolved _   = true
+
+-- list of rows, cols, boxes
+allrows = map row rowstarts
+allcols = map col colstarts
+allboxs = map box boxstarts
+allrcb  = zip (repeat "row") allrows
+          ++ zip (repeat "col") allcols
+          ++ zip (repeat "box") allboxs
+
+
+containers :: [(Position -> [Position], String)]
+containers = [(row, "row"), (col, "col"), (box, "box")]
+
+-- ----------------- PRINTING ------------------------------------
+-- printable coordinate of field, upper left is a1, lower right is i9
+pname p = packed [chr (ord 'a' + p `mod` 9), chr (ord '1' + p `div` 9)]
+
+-- print board
+printb b = mapM_ p1line allrows >> println ""
+    where
+        p1line row = do
+                print (joined "" (map pfld line))
+            where line = map (getc b) row
+
+-- print field (brief)
+--   ? = no candidate
+--   5 = field is 5
+--   . = some candidates
+pfld [] = "?"
+pfld [x] = show x
+pfld zs = "0"
+
+-- print initial/final board
+result msg b = do
+        println ("Result: " ++ msg)
+        print   ("Board: ")
+        printb b
+        return b
+
+res012 b = case concatMap (getc b) [0,1,2] of
+    [a,b,c] -> a*100+b*10+c
+    _ -> 9999999
+
+-- -------------------------- BOARD ALTERATION ACTIONS ---------------------------------
+-- print a message about what is done to the board and return the new board
+turnoff1 :: Position -> Zelle -> Brett -> IO Brett
+turnoff1 i off b
+    | single nc = do
+            -- print (pname i)
+            -- print ": set to "
+            -- print (head nc)
+            -- println " (naked single)"
+            return newb
+    | otherwise = return newb
+    where
+        cell   = getc b i
+        nc     = filter (`notElem` off) cell
+        newb   = (i, nc) : [ f | f <- b, fst f != i ]
+
+turnoff :: Int -> Zelle -> String -> Brett -> IO Brett
+turnoff i off msg b = do
+        -- print (pname i)
+        -- print ": set to "
+        -- print nc
+        -- print " by clearing "
+        -- print off
+        -- print " "
+        -- println  msg
+        return newb
+    where
+        cell   = getc b i
+        nc     = filter (`notElem` off) cell
+        newb   = (i, nc) : [ f | f <- b, fst f != i ]
+
+turnoffh ps off msg b = foldM toh b ps
+    where
+        toh b p = turnoff p off msg b
+
+setto :: Position -> Element -> String -> Brett -> IO Brett
+setto i n cname b = do
+        -- print (pname i)
+        -- print ": set to "
+        -- print n
+        -- print " (hidden single in "
+        -- print cname
+        -- println ")"
+        return newb
+    where
+        nf     = [n]
+        newb   = (i, nf) : [ f | f <- b, fst f != i ]
+
+
+-- ----------------------------- SOLVING STRATEGIES ---------------------------------------------
+-- reduce candidate sets that contains numbers already in same row, col or box
+-- This finds (and logs) NAKED SINGLEs in passing.
+reduce b = [  turnoff1 p sss | (p,cell) <- b,               -- for each field
+                unsolved cell,                              --  with more than 1 candidate
+                --       single fields in containers that are candidates of that field
+                sss = [ s | (rcb, _) <- containers, [s] <- map (getc b) (rcb p), s `elem` cell],
+                sss != [] ]                                     -- collect field index, elements to remove from candidate set
+
+-- look for a number that appears in exactly 1 candidate set of a container
+-- this number can go in no other place (HIDDEN SINGLE)
+hiddenSingle b = [ setto i n cname |                     -- select index, number, containername
+            (cname, rcb) <- allrcb,                 -- FOR rcb IN allrcb
+            n <- elements,                          --  FOR n IN elements
+            fs     = filter (unsolved • snd) (map (getf b) rcb),
+            occurs  = filter ((n `elem`) • snd) fs,
+            length occurs == 1,
+            (i, _) <- occurs ]
+
+-- look for NAKED PAIRS, TRIPLES, QUADS
+nakedPair n b = [ turnoff p t ("(naked tuple in " ++ nm ++ ")") |           -- SELECT pos, tuple, name
+            -- n <- [2,3,4],                    //  FOR n IN [2,3,4]
+            (nm, rcb) <- allrcb,             --    FOR rcb IN containers
+            fs = map (getf b) rcb,              --      let fs = fields for rcb positions
+            u  = (fold union [] . filter unsolved . map snd) fs,   -- let u = union of non single candidates
+            t <- n `outof` u,                   --      FOR t IN n-tuples
+            hit = (filter ((`subset` t) . snd) . filter (unsolved . snd)) fs,
+            length hit == n,
+            (p, cell) <- fs,
+            p `notElem` map fst hit,
+            any (`elem` cell) t
+            ]
+
+-- look for HIDDEN PAIRS, TRIPLES or QUADS
+hiddenPair n b = [ turnoff p off ("(hidden " ++ show t ++ " in " ++ nm ++ ")") |           -- SELECT pos, tuple, name
+            -- n <- [2,3,4],                    //  FOR n IN [2,3,4]
+            (nm, rcb) <- allrcb,             --    FOR rcb IN containers
+            fs = map (getf b) rcb,              --      let fs = fields for rcb positions
+            u  = (fold union [] . filter ((>1) . length) . map snd) fs,   -- let u = union of non single candidates
+            t <- n `outof` u,                   --      FOR t IN n-tuples
+            hit = (filter (any ( `elem` t) . snd) . filter (unsolved . snd)) fs,
+            length hit == n,
+            off = (fold union [] . map snd) hit `minus` t,
+            off != [],
+            (p, cell) <- hit,
+            ! (cell `subset` t)
+            ]
+
+a `subset` b = all (`elem` b) a
+a `union`  b = uniq (sort (a ++ b))
+a `minus`  b = filter (`notElem` b) a
+a `common` b = filter (`elem` b) a
+n `outof` as
+    | length as < n = []
+    | [] <- as      = []
+    | 1 >= n        = map (:[]) as
+    | (a:bs) <- as  = map (a:) ((n-1) `outof` bs) ++ (n `outof` bs)
+    | otherwise     = undefined  -- cannot happen because either as is empty or not
+
+same f a b = b `elem` f a
+
+intersectionlist = [(allboxs, row, "box/row intersection"), (allboxs, col, "box/col intersection"),
+                    (allrows ++ allcols, box, "line/box intersection")]
+intersections b = [
+    turnoff pos [c] reason |    -- SELECT position, candidate, reson
+        (from, container, reason) <- intersectionlist,
+        rcb <- from,
+        fs = (filter (unsolved . snd) . map (getf b)) rcb,        -- fs = fields in from with more than 1 candidate
+        c <- (fold union [] • map snd) fs,                          -- FOR c IN union of candidates
+        cpos = (map fst • filter ((c `elem`) • snd)) fs,            -- cpos = positions where c occurs
+        cpos != [],                                                 -- WHERE cpos is not empty
+        all (same container (head cpos)) (tail cpos),               -- WHERE all positions are in the intersection
+        -- we can remove all occurences of c that are in container, but not in from
+        (pos, cell) <- map (getf b) (container (head cpos)),
+        c `elem` cell,
+        pos `notElem` rcb ]
+
+
+-- look for an XY Wing
+--  - there exists a cell A with candidates X and Y
+--  - there exists a cell B with candidates X and Z that shares a container with A
+--  - there exists a cell C with candidates Y and Z that shares a container with A
+-- reasoning
+--  - if A is X, B will be Z
+--  - if A is Y, C will be Z
+--  - since A will indeed be X or Y -> B or C will be Z
+--  - thus, no cell that can see B and C can be Z
+xyWing board = [ turnoff p [z] ("xy wing " ++ pname b ++ " " ++ pname c ++ " because of " ++ pname a) |
+        (a, [x,y]) <- board,                            -- there exists a cell a with candidates x and y
+        rcba = map (getf board) (row a ++ col a ++ box a),  -- rcba = all fields that share a container with a
+        (b, [b1, b2]) <- rcba,
+        b != a,
+        b1 == x && b2 != y || b2 == x && b1 != y,       -- there exists a cell B with candidates x and z
+        z = if b1 == x then b2 else b1,
+        (c, [c1, c2]) <- rcba,
+        c != a, c!= b,
+        c1 == y && c2 == z || c1 == z && c2 == y,       -- there exists a cell C with candidates y and z
+        ps = (uniq . sort) ((row b ++ col b ++ box b) `common` (row c ++ col c ++ box c)),
+        -- remove z in ps
+        (p, cs) <- map (getf board) ps,
+        p != b, p != c,
+        z `elem` cs ]
+
+-- look for a N-Fish (2: X-Wing, 3: Swordfish, 4: Jellyfish)
+-- When all candidates for a particular digit in N rows are located
+-- in only N columns, we can eliminate all candidates from those N columns
+--  which are not located on those N rows
+fish n board = fish "row" allrows row col ++ fish "col" allcols col row where
+    fishname 2 = "X-Wing"
+    fishname 3 = "Swordfish"
+    fishname 4 = "Jellyfish"
+    fishname _ = "unknown fish"
+    fish nm allrows row col = [ turnoff p [x] (fishname n ++ " in " ++ nm ++ " " ++ show (map (pname . head) rset)) |
+        rset <- n `outof` allrows,          -- take n rows (or cols)
+        x <- elements,                      -- look for certain number
+        rflds = map (filter ((>1) . length . snd) . map (getf board)) rset,       -- unsolved fields in the rowset
+        colss  = (map (map (head . col . fst) . filter ((x `elem`) . snd)) rflds),   -- where x occurs in candidates
+        all ((>1) . length) colss,         -- x must appear in at least 2 cols
+        cols = fold union [] colss,
+        length cols == n,
+        cstart <- cols,
+        (p, cell) <- map (getf board) (col cstart),
+        x `elem` cell,
+        all (p `notElem`) rset]
+
+
+-- compute immediate consequences of an assumption of the form (p `IS` e) or (p `ISNOT` e)
+conseq board (IS p e) = uniq (sort ([ p `ISNOT` x | x <- getc board p, x != e ] ++
+    [ a `ISNOT` e |
+        (a,cs) <- map (getf board) (row p ++ col p ++ box p),
+        a != p,
+        e `elem` cs
+    ]))
+conseq board (ISNOT p  e) = uniq (sort ([ p `IS` x | cs = getc board p, length cs == 2, x <- cs, x != e ] ++
+    [ a `IS` e |
+        cp <- [row p, box p, col p],
+        as = (filter ((e `elem`) . getc board) . filter (p!=)) cp,
+        length as == 1,
+        a = head as
+    ]))
+
+-- check if two assumptions contradict each other
+contradicts (IS a x)    (IS b y)    = a==b && x!=y
+contradicts (IS a x)    (ISNOT b y) = a==b && x==y
+contradicts (ISNOT a x) (IS b y)    = a==b && x==y
+contradicts (ISNOT _ _) (ISNOT _ _) = false
+
+-- get the Position of an Assumption
+aPos (IS p _)    = p
+aPos (ISNOT p _) = p
+
+-- get List of elements that must be turned off when assumption is true/false
+toClear board true  (IS p x)    = filter (x!=) (getc board p)
+toClear board false (IS p x)    = [x]
+toClear board true  (ISNOT p x) = [x]
+toClear board false (ISNOT p x) = filter (x!=) (getc board p)
+
+
+-- look for assumptions whose implications contradict themself
+chain board paths = [ solution a (head cs) (reverse cs) |
+        (a, css) <-  paths,
+        cs <- take 1 [ cs | cs <- css, contradicts a (head cs) ]
+        ]
+    where
+        solution a c cs = turnoff (aPos a) (toClear board false a) reason where
+            reason = "Assumption " ++ show a ++ " implies " ++ show c ++ "\n\t"
+                ++ showcs cs ++ "\n\t"
+                ++ "Therefore, " ++ show a ++ " must be false."
+
+-- look for an assumption that yields to contradictory implications
+-- this assumption must be false
+chainContra board paths = [ solution a (reverse pro) (reverse contra) |
+        (a, css) <- paths,          -- FOR ALL assumptions "a" with list of conlusions "css"
+        (pro, contra) <- take 1 [ (pro, contra) |
+            pro <- (uniqBy (using head) . sortBy (comparing head)) css,                 -- FOR ALL conslusion chains "pro"
+            c = head pro,               -- LET "c" BE the final conclusion
+            contra <- take 1 (filter ((contradicts c) . head) css)   -- THE FIRST conclusion that contradicts c
+        ]
+      ]
+    where
+        solution a pro con = turnoff (aPos a) (toClear board false a) reason where
+            reason = ("assumption " ++ show a ++ " leads to contradictory conclusions\n\t"
+                        ++ showcs pro ++ "\n\t" ++ showcs con)
+
+
+
+-- look for a common implication c of some assumptions ai, where at least 1 ai is true
+-- so that (a0 OR a1 OR a2 OR ...) IMPLIES c
+-- For all cells pi in same container that have x as candidate, we can construct (p0==x OR p1==x OR ... OR pi==x)
+-- For a cell p with candidates ci, we can construct (p==c0 OR p==c1)
+cellRegionChain board paths = [ solution b as (map head os) |
+        as <- cellas ++ regionas,           -- one of as must be true
+        iss = filter ((`elem` as) . fst) paths,    -- the implications for as
+        (a, ass) <- take 1 iss,             -- implications for first assumption
+        fs <- (uniqBy (using head) . sortBy (comparing head)) ass,
+        b = head fs,                        -- final conclusions of first assumption
+        os = [fs] : map (take 1 . filter ((b==) . head) . snd) (tail iss), -- look for implications with same conclusion
+        all ([]!=) os]
+    where
+        cellas   = [ map (p `IS`) candidates | (p, candidates@(_:_:_)) <- board ]
+        regionas = [ map (`IS` e) ps |
+            region <- map (map (getf board)) (allrows ++ allcols ++ allboxs),
+            e <- elements,
+            ps = map fst (filter ((e `elem`) . snd) region),
+            length ps > 1 ]
+        solution b as oss = turnoff (aPos b) (toClear board true b) reason where
+            reason = "all of the assumptions " ++ joined ", " (map show as) ++ " imply " ++ show b ++ "\n\t"
+                ++ joined "\n\t" (map (showcs . reverse) oss) ++ "\n\t"
+                ++ "One of them must be true, so " ++ show b ++ " must be true."
+
+
+{-
+    Wir brauchen für einige Funktionen eine Datenstruktur wie
+        [ (Assumption, [[Assumption]]) ]
+    d.i. eine Liste von möglichen Annahmen samt aller Schlußketten.
+    Idealerweise sollte die Schlußkette in umgekehrter Reihenfolge vorliegen,
+    dann kann man einfach finden:
+    - Annahmen, die zum Selbstwiderspruch führen.
+    - alles, was aus einer bestimmten Annahme folgt (map (map head) [[a]])
+    -...
+-}
+--- Liste aller Annahmen für ein bestimmtes Brett
+assumptions :: Brett -> [Assumption]
+assumptions board = [ a |
+                (p, cs) <- board,
+                !(single cs),
+                a <- map (ISNOT p) cs ++ map (IS p) cs ]
+
+consequences :: Brett -> [Assumption] -> [[Assumption]]
+consequences board as = map (conseq board) as
+
+acstree :: Brett -> Tree Assumption [Assumption]
+acstree board = Tree.fromList (zip as cs)
+    where
+        as = assumptions  board
+        cs = consequences board as
+
+-- bypass maybe on tree lookup
+find :: Tree Assumption [Assumption] -> Assumption -> [Assumption]
+find t a
+    | Just cs <- t.lookup a = cs
+    | otherwise = error ("no consequences for " ++ show a)
+
+-- for performance resons, we confine ourselves to implication chains of length 20 per assumption
+mkPaths :: Tree Assumption [Assumption] -> [ (Assumption, [[Assumption]]) ]
+mkPaths acst = map impl  (keys acst)   -- {[a1], [a2], [a3] ]
+    where
+        -- [Assumption] -> [(a, [chains, ordered by length]
+        impl a = (a, impls [[a]])
+        impls ns = (take 1000 • concat • takeUntil null • iterate expandchain) ns
+        -- expandchain :: [[Assumption]] -> [[Assumption]]
+        expandchain css = [ (n:a:as) |
+            (a : as) <- css,               -- list of assumptions
+            n <- find acst a,              -- consequences of a
+            n `notElem` as                 -- avoid loops
+          ]
+        -- uni (a:as) = a : uni (filter ((head a !=) • head) as)
+        -- uni [] = empty
+        -- empty = []
+
+
+-- ------------------ SOLVE A SUDOKU --------------------------
+-- Apply all available strategies until nothing changes anymore
+-- Strategy functions are supposed to return a list of
+-- functions, which, when applied to a board, give a changed board.
+-- When a strategy does not find anything to alter,
+-- it returns [], and the next strategy can be tried.
+solve b
+    | all (single . snd) b       = result "Solved" b
+    | any (([]==) . snd) b       = result "not solvable" b
+    | res@(_:_) <- reduce b       = apply b res >>=solve       -- compute smallest candidate sets
+    -- comment "candidate sets are up to date" = ()
+    | res@(_:_) <- hiddenSingle b  = apply b res >>= solve     -- find HIDDEN SINGLES
+    -- comment "no more hidden singles" = ()
+    | res@(_:_) <- intersections b = apply b res >>= solve     -- find locked candidates
+    -- comment "no more intersections" = ()
+    | res@(_:_) <- nakedPair 2 b     = apply b res >>= solve     -- find NAKED PAIRS, TRIPLES or QUADRUPELS
+    -- comment "no more naked pairs" = ()
+    | res@(_:_) <- hiddenPair  2 b   = apply b res >>= solve      -- find HIDDEN PAIRS, TRIPLES or QUADRUPELS
+    -- comment "no more hidden pairs" = ()
+    -- res@(_:_) <- nakedPair 3 b     = apply b res >>= solve       // find NAKED PAIRS, TRIPLES or QUADRUPELS
+    -- | comment "no more naked triples" = ()
+    -- res@(_:_) <- hiddenPair  3 b    = apply b res >>= solve      // find HIDDEN PAIRS, TRIPLES or QUADRUPELS
+    -- | comment "no more hidden triples" = ()
+    -- res@(_:_) <- nakedPair 4 b     = apply b res >>=solve       // find NAKED PAIRS, TRIPLES or QUADRUPELS
+    -- | comment "no more naked quadruples" = ()
+    -- res@(_:_) <- hiddenPair  4 b    = apply b res >>=solve      // find HIDDEN PAIRS, TRIPLES or QUADRUPELS
+    -- | comment "no more hidden quadruples" = ()
+    | res@(_:_) <- xyWing b            = apply b res >>=solve      -- find XY WINGS
+    -- comment "no more xy wings"       = ()
+    | res@(_:_) <- fish 2 b            = apply b res >>=solve      -- find 2-FISH
+    -- comment "no more x-wings"        = ()
+    -- res@(_:_) <- fish 3 b            = apply b res >>=solve      // find 3-FISH
+    -- | comment "no more swordfish"      = ()
+    -- res@(_:_) <- fish 4 b            = apply b res >>=solve      // find 4-FISH
+    -- | comment "no more jellyfish"      = ()
+    -- | comment pcomment                 = ()
+    | res@(_:_) <- chain b paths             = apply b (take 9 res) >>= solve  -- find forcing chains
+    | res@(_:_) <- cellRegionChain b paths   = apply b (take 9 res) >>= solve  -- find common conclusion for true assumption
+    | res@(_:_) <- chainContra b paths       = apply b (take 9 res) >>= solve  -- find assumptions that allow to infer both a and !a
+    -- comment "consistent conclusions only"       = ()
+
+    | otherwise = result "ambiguous" b
+    where
+        apply brd fs = foldM (\b\f -> f b) brd fs
+        paths = mkPaths (acstree b)
+        -- pcomment = show (length paths) ++ " assumptions with " ++ show (fold (+) 0 (map (length <~ snd) paths))
+        --    ++ " implication chains"
+
+-- comment com = do stderr << com << "\n" for false
+-- log com     = do stderr << com << "\n" for true
+
+--- turn a string into a row
+mkrow :: String -> [Zelle]
+mkrow s = mkrow1 xs
+    where
+        xs = s ++ "---------" -- make sure at least 9 elements
+        mkrow1 xs = (take 9 • filter ([]!=) • map f • unpacked) xs
+        f x | x >= '1' && x <= '9'  =  [ord x - ord '0']
+            | x == ' '  = []    -- ignored
+            | otherwise = elements
+
+main ["-h"]    = main []
+main ["-help"] = main []
+main [] = do
+        mapM_ stderr.println [
+            "usage: java Sudoku file ...",
+            "       java Sudoku position",
+            "where position is a 81 char string consisting of digits",
+            "One can get such a string by going to",
+            "http://www.sudokuoftheday.com/pages/s-o-t-d.php",
+            "Right click on the puzzle and open it in new tab",
+            "Copy the 81 digits from the URL in the address field of your browser.",
+            "",
+            "There is also a file with hard sudokus in examples/top95.txt\n"]
+        return ()
+
+
+main [s@#^[0-9\W]{81}$#] = solve board >> return ()
+    where
+        board = zip positions felder
+        felder = decode s
+
+main files = forM_ files sudoku
+    where
+        sudoku file = do
+            br <- openReader file
+            lines <- BufferedReader.getLines br
+            bs <- process lines
+            ss <- mapM (\b -> print "Puzzle: " >> printb b >> solve b) bs
+            println ("Euler: " ++ show (sum (map res012 ss)))
+            return ()
+
+-- "--3-" => [1..9, 1..9, [3], 1..9]
+decode s = map candi (unpacked s) where
+        candi c | c >= '1' && c <= '9'  = [(ord c - ord '0')]
+                | otherwise = elements
+process [] = return []
+process (s:ss)
+    | length s == 81 = consider b1
+    | length s == 9,
+      length acht == 8,
+      all ((9==) • length) acht = consider b2
+    | otherwise = do
+            stderr.println ("skipped line: " ++ s)
+            process ss
+    where
+        acht = take 8 ss
+        neun = fold (++) "" (s:acht)
+        b1 = zip positions (decode s)
+        b2 = zip positions (decode neun)
+        consider b = do
+            -- print "Puzzle: "
+            -- printb b
+            bs <- process ss
+            return (b:bs)
+
diff --git a/samples/Frege/SwingExamples.fr b/samples/Frege/SwingExamples.fr
new file mode 100644
index 00000000..73569546
--- /dev/null
+++ b/samples/Frege/SwingExamples.fr
@@ -0,0 +1,79 @@
+package examples.SwingExamples where
+
+import Java.Awt  (ActionListener)
+import Java.Swing
+
+
+main _ = do
+    rs <- mapM Runnable.new [helloWorldGUI, buttonDemoGUI, celsiusConverterGUI]
+    mapM_ invokeLater rs
+    println "Hit enter to end ...."
+    s <- getLine
+    return ()
+
+celsiusConverterGUI = do
+    tempTextField   <- JTextField.new()
+    celsiusLabel    <- JLabel.new ()
+    convertButton   <- JButton.new ()
+    fahrenheitLabel <- JLabel.new () 
+    frame           <- JFrame.new ()
+    frame.setDefaultCloseOperation JFrame.dispose_on_close
+    frame.setTitle "Celsius Converter"
+    celsiusLabel.setText  "Celsius"
+    convertButton.setText "Convert"
+    let convertButtonActionPerformed _ = do
+            celsius <- tempTextField.getText
+            case celsius.double of
+                Left _  -> fahrenheitLabel.setText ("not a valid number: " ++ celsius)
+                Right c -> fahrenheitLabel.setText (show (c*1.8 + 32.0).long ++ " Fahrenheit") 
+            return ()
+    ActionListener.new convertButtonActionPerformed >>= convertButton.addActionListener
+    fahrenheitLabel.setText "Fahrenheit"
+    contentPane <- frame.getContentPane
+    layout      <- GroupLayout.new contentPane
+    contentPane.setLayout layout
+    -- TODO continue
+    -- http://docs.oracle.com/javase/tutorial/displayCode.html?code=http://docs.oracle.com/javase/tutorial/uiswing/examples/learn/CelsiusConverterProject/src/learn/CelsiusConverterGUI.java
+    frame.pack
+    frame.setVisible true
+
+helloWorldGUI = do
+    frame <- JFrame.new "Hello World Frege"
+    frame.setDefaultCloseOperation(JFrame.dispose_on_close)
+    label <- JLabel.new "Hello World!"
+    cp <- frame.getContentPane
+    cp.add label
+    frame.pack
+    frame.setVisible true
+
+buttonDemoGUI = do
+    frame <- JFrame.new "Button Demo"
+    frame.setDefaultCloseOperation(JFrame.dispose_on_close)
+    newContentPane <- JPanel.new ()
+    b1::JButton <- JButton.new "Disable middle button"
+    b1.setVerticalTextPosition   SwingConstants.center
+    b1.setHorizontalTextPosition SwingConstants.leading
+    b2::JButton <- JButton.new "Middle button"
+    b2.setVerticalTextPosition   SwingConstants.center
+    b2.setHorizontalTextPosition SwingConstants.leading
+    b3::JButton <- JButton.new "Enable middle button"
+    b3.setVerticalTextPosition   SwingConstants.center
+    b3.setHorizontalTextPosition SwingConstants.leading
+    b3.setEnabled false
+    let action1 _ = do
+            b2.setEnabled false
+            b1.setEnabled false
+            b3.setEnabled true
+        action3 _ = do
+            b2.setEnabled true
+            b1.setEnabled true
+            b3.setEnabled false
+    ActionListener.new action1  >>= b1.addActionListener
+    ActionListener.new action3  >>= b3.addActionListener 
+    newContentPane.add b1
+    newContentPane.add b2
+    newContentPane.add b3
+    newContentPane.setOpaque true
+    frame.setContentPane newContentPane
+    frame.pack
+    frame.setVisible true
diff --git a/samples/GAMS/transport.gms b/samples/GAMS/transport.gms
new file mode 100644
index 00000000..fb6ccbc9
--- /dev/null
+++ b/samples/GAMS/transport.gms
@@ -0,0 +1,76 @@
+*Basic example of transport model from GAMS model library
+
+$Title  A Transportation Problem (TRNSPORT,SEQ=1)
+$Ontext
+
+This problem finds a least cost shipping schedule that meets
+requirements at markets and supplies at factories.
+
+
+Dantzig, G B, Chapter 3.3. In Linear Programming and Extensions.
+Princeton University Press, Princeton, New Jersey, 1963.
+
+This formulation is described in detail in:
+Rosenthal, R E, Chapter 2: A GAMS Tutorial. In GAMS: A User's Guide.
+The Scientific Press, Redwood City, California, 1988.
+
+The line numbers will not match those in the book because of these
+comments.
+
+$Offtext
+
+
+  Sets
+       i   canning plants   / seattle, san-diego /
+       j   markets          / new-york, chicago, topeka / ;
+  Parameters
+       a(i)  capacity of plant i in cases
+         /    seattle     350
+              san-diego   600  /
+       b(j)  demand at market j in cases
+         /    new-york    325
+              chicago     300
+              topeka      275  / ;
+  Table d(i,j)  distance in thousands of miles
+                    new-york       chicago      topeka
+      seattle          2.5           1.7          1.8
+      san-diego        2.5           1.8          1.4  ;
+  Scalar f  freight in dollars per case per thousand miles  /90/ ;
+  Parameter c(i,j)  transport cost in thousands of dollars per case ;
+            c(i,j) = f * d(i,j) / 1000 ;
+  Variables
+       x(i,j)  shipment quantities in cases
+       z       total transportation costs in thousands of dollars ;
+
+  Positive Variable x ;
+
+  Equations
+       cost        define objective function
+       supply(i)   observe supply limit at plant i
+       demand(j)   satisfy demand at market j ;
+
+  cost ..        z  =e=  sum((i,j), c(i,j)*x(i,j)) ;
+
+  supply(i) ..   sum(j, x(i,j))  =l=  a(i) ;
+
+  demand(j) ..   sum(i, x(i,j))  =g=  b(j) ;
+
+  Model transport /all/ ;
+
+  Solve transport using lp minimizing z ;
+
+  Display x.l, x.m ;
+
+$ontext
+#user model library stuff
+Main topic Basic GAMS
+Featured item 1 Trnsport model
+Featured item 2
+Featured item 3
+Featured item 4
+Description
+Basic example of transport model from GAMS model library
+
+
+
+$offtext
\ No newline at end of file
diff --git a/samples/GAP/Magic.gd b/samples/GAP/Magic.gd
new file mode 100644
index 00000000..cdd8baec
--- /dev/null
+++ b/samples/GAP/Magic.gd
@@ -0,0 +1,307 @@
+#############################################################################
+##
+##  Magic.gd                                         AutoDoc package
+##
+##  Copyright 2013, Max Horn, JLU Giessen
+##                  Sebastian Gutsche, University of Kaiserslautern
+##
+#############################################################################
+
+
+#! @Description
+#! This is the main function of the &AutoDoc; package. It can perform
+#! any combination of the following three tasks:
+#! <Enum>
+#! <Item>
+#!     It can (re)generate a scaffold for your package manual.
+#!     That is, it can produce two XML files in &GAPDoc; format to be used as part
+#!     of your manual: First, a file named <F>doc/PACKAGENAME.xml</F>
+#!     (with your package's name substituted) which is used as
+#!     main file for the package manual, i.e. this file sets the
+#!     XML DOCTYPE and defines various XML entities, includes
+#!     other XML files (both those generated by &AutoDoc; as well
+#!     as additional files created by other means), tells &GAPDoc;
+#!     to generate a table of content and an index, and more.
+#!     Secondly, it creates a file <F>doc/title.xml</F> containing a title
+#!     page for your documentation, with information about your package
+#!     (name, description, version), its authors and more, based
+#!     on the data in your <F>PackageInfo.g</F>.
+#! </Item>
+#! <Item>
+#!     It can scan your package for &AutoDoc; based documentation (by using &AutoDoc;
+#!     tags and the Autodoc command.
+#!     This will
+#!     produce further XML files to be used as part of the package manual.
+#! </Item>
+#! <Item>
+#!     It can use &GAPDoc; to generate PDF, text and HTML (with
+#!     MathJaX enabled) documentation from the &GAPDoc; XML files it
+#!     generated as well as additional such files provided by you. For
+#!     this, it invokes <Ref Func='MakeGAPDocDoc' BookName='gapdoc'/>
+#!     to convert the XML sources, and it also instructs &GAPDoc; to copy
+#!     supplementary files (such as CSS style files) into your doc directory
+#!     (see <Ref Func='CopyHTMLStyleFiles' BookName='gapdoc'/>).
+#! </Item>
+#! </Enum>
+#! For more information and some examples, please refer to Chapter <Ref Label='Tutorials'/>.
+#! <P/>
+#! The parameters have the following meanings:
+#! <List>
+#!
+#! <Mark><A>package_name</A></Mark>
+#! <Item>
+#!     The name of the package whose documentation should be(re)generated.
+#! </Item>
+#!
+#!
+#! <Mark><A>option_record</A></Mark>
+#! <Item>
+#!     <A>option_record</A> can be a record with some additional options.
+#!     The following are currently supported:
+#!     <List>
+#!     <Mark><A>dir</A></Mark>
+#!     <Item>
+#!         This should be a string containing a (relative) path or a
+#!         Directory() object specifying where the package documentation
+#!         (i.e. the &GAPDoc; XML files) are stored.
+#!         <Br/>
+#!         <E>Default value: <C>"doc/"</C>.</E>
+#!     </Item>
+#!     <Mark><A>scaffold</A></Mark>
+#!     <Item>
+#!         This controls whether and how to generate scaffold XML files
+#!         for the main and title page of the package's documentation. 
+#!         <P/>
+#!         The value should be either <K>true</K>, <K>false</K> or a
+#!         record. If it is a record or <K>true</K> (the latter is
+#!         equivalent to specifying an empty record), then this feature is
+#!         enabled. It is also enabled if <A>opt.scaffold</A> is missing but the
+#!         package's info record in <F>PackageInfo.g</F> has an <C>AutoDoc</C> entry.
+#!         In all other cases (in particular if <A>opt.scaffold</A> is
+#!         <K>false</K>), scaffolding is disabled.
+#!         <P/>
+#!
+#!         If <A>opt.scaffold</A> is a record, it may contain the following entries.
+#!
+#### TODO: mention merging with PackageInfo.AutoDoc!
+#!         <List>
+#!
+#!         <Mark><A>includes</A></Mark>
+#!         <Item>
+#!             A list of XML files to be included in the body of the main XML file.
+#!             If you specify this list and also are using &AutoDoc; to document
+#!             your operations with &AutoDoc; comments,
+#!             you can add <F>AutoDocMainFile.xml</F> to this list
+#!             to control at which point the documentation produced by &AutoDoc;
+#!             is inserted. If you do not do this, it will be added after the last
+#!             of your own XML files.
+#!         </Item>
+#!
+#!         <Mark><A>appendix</A></Mark>
+#!         <Item>
+#!             This entry is similar to <A>opt.scaffold.includes</A> but is used
+#!             to specify files to include after the main body of the manual,
+#!             i.e. typically appendices.
+#!         </Item>
+#!
+#!         <Mark><A>bib</A></Mark>
+#!         <Item>
+#!             The name of a bibliography file, in Bibtex or XML format.
+#!             If this key is not set, but there is a file <F>doc/PACKAGENAME.bib</F>
+#!             then it is assumed that you want to use this as your bibliography.
+#!         </Item>
+#!
+#### TODO: The 'entities' param is a bit strange. We should probably change it to be a bit more
+#### general, as one might want to define other entities... For now, we do not document it
+#### to leave us the choice of revising how it works.
+####
+####                 <Mark><A>entities</A></Mark>
+####                 <Item>
+####                     A list of package names or other entities which are used to define corresponding XML entities.
+####                     For example, if set to a list containing the string <Q>SomePackage</Q>,
+####                     then the following is added to the XML preamble:
+####                     <Listing><![CDATA[<!ENTITY SomePackage '<Package>SomePackage</Package>'>]]></Listing>
+####                     This allows you to write <Q>&amp;SomePackage;</Q> in your documentation
+####                     to reference that package. If another type of entity is desired, one can simply add,
+####                     instead of a string, add a two entry list <A>a</A> to the list. It will be handled as
+####                     <Listing><![CDATA[<!ENTITY a[ 2 ] '<a[ 1 ]>a[ 2 ]</a[ 1 ]>'>]]></Listing>,
+####                     so please be careful.
+####                 </Item>
+#!
+#!         <Mark><A>TitlePage</A></Mark>
+#!         <Item>
+#!             A record whose entries are used to embellish the generated titlepage
+#!             for the package manual with extra information, such as a copyright
+#!             statement or acknowledgments. To this end, the names of the record
+#!             components are used as XML element names, and the values of the
+#!             components are outputted as content of these XML elements. For
+#!             example, you could pass the following record to set a custom
+#!             acknowledgements text:
+#!             <Listing><![CDATA[
+#!             rec( Acknowledgements := "Many thanks to ..." )]]></Listing>
+#!             For a list of valid entries in the titlepage, please refer to the
+#!             &GAPDoc; manual, specifically section <Ref Subsect='Title' BookName='gapdoc'/>
+#!             and following.
+#!         </Item>
+#!         <Mark><A>document_class</A></Mark>
+#!         <Item>
+#!             Sets the document class of the resulting pdf. The value can either be a string
+#!             which has to be the name of the new document class, a list containing this string, or
+#!             a list of two strings. Then the first one has to be the document class name, the second one
+#!             the option string ( contained in [ ] ) in LaTeX.
+#!         </Item>
+#!         <Mark><A>latex_header_file</A></Mark>
+#!         <Item>
+#!             Replaces the standard header from &GAPDoc; completely with the header in this LaTeX file.
+#!             Please be careful here, and look at GAPDoc's latexheader.tex file for an example.
+#!         </Item>
+#!         <Mark><A>gapdoc_latex_options</A></Mark>
+#!         <Item>
+#!             Must be a record with entries which can be understood by SetGapDocLaTeXOptions. Each entry can be a string, which
+#!             will be given to &GAPDoc; directly, or a list containing of two entries: The first one must be the string "file",
+#!             the second one a filename. This file will be read and then its content is passed to &GAPDoc; as option with the name
+#!             of the entry.
+#!         </Item>
+#!
+#!         </List>
+#!     </Item>
+#!
+#!
+#!     <Mark><A>autodoc</A></Mark>
+#!     <Item>
+#!         This controls whether and how to generate addition XML documentation files
+#!         by scanning for &AutoDoc; documentation comments.
+#!         <P/>
+#!         The value should be either <K>true</K>, <K>false</K> or a
+#!         record. If it is a record or <K>true</K> (the latter is
+#!         equivalent to specifying an empty record), then this feature is
+#!         enabled. It is also enabled if <A>opt.autodoc</A> is missing but the
+#!         package depends (directly) on the &AutoDoc; package.
+#!         In all other cases (in particular if <A>opt.autodoc</A> is
+#!         <K>false</K>), this feature is disabled.
+#!         <P/>
+#!
+#!         If <A>opt.autodoc</A> is a record, it may contain the following entries.
+#!
+#!         <List>
+#!
+#!         <Mark><A>files</A></Mark>
+#!         <Item>
+#!             A list of files (given by paths relative to the package directory)
+#!             to be scanned for &AutoDoc; documentation comments.
+#!             Usually it is more convenient to use <A>autodoc.scan_dirs</A>, see below.
+#!         </Item>
+#!
+#!         <Mark><A>scan_dirs</A></Mark>
+#!         <Item>
+#!             A list of subdirectories of the package directory (given as relative paths)
+#!             which &AutoDoc; then scans for .gi, .gd and .g files; all of these files
+#!             are then scanned for &AutoDoc; documentation comments.
+#!             <Br/>
+#!             <E>Default value: <C>[ "gap", "lib", "examples", "examples/doc" ]</C>.</E>
+#!         </Item>
+#!
+#!         <Mark><A>level</A></Mark>
+#!         <Item>
+#!             This defines the level of the created documentation. The default value is 0.
+#!             When parts of the manual are declared with a higher value
+#!             they will not be printed into the manual.
+#!         </Item>
+#!
+#### TODO: Document section_intros later on.
+#### However, note that thanks to the new AutoDoc comment syntax, the only remaining
+#### use for this seems to be the ability to specify the order of chapters and
+#### sections.
+####                 <Mark><A>section_intros</A></Mark>
+####                 <Item>
+####                     TODO.
+####                 </Item>
+#!
+#!         </List>
+#!     </Item>
+#!
+#!
+#!     <Mark><A>gapdoc</A></Mark>
+#!     <Item>
+#!         This controls whether and how to invoke &GAPDoc; to create HTML, PDF and text
+#!         files from your various XML files.
+#!         <P/>
+#!         The value should be either <K>true</K>, <K>false</K> or a
+#!         record. If it is a record or <K>true</K> (the latter is
+#!         equivalent to specifying an empty record), then this feature is
+#!         enabled. It is also enabled if <A>opt.gapdoc</A> is missing.
+#!         In all other cases (in particular if <A>opt.gapdoc</A> is
+#!         <K>false</K>), this feature is disabled.
+#!         <P/>
+#!
+#!         If <A>opt.gapdoc</A> is a record, it may contain the following entries.
+#!
+#!         <List>
+#!
+#!
+#### Note: 'main' is strictly speaking also used for the scaffold.
+#### However, if one uses the scaffolding mechanism, then it is not
+#### really necessary to specify a custom name for the main XML file.
+#### Thus, the purpose of this parameter is to cater for packages
+#### that have existing documentation using a different XML name,
+#### and which do not wish to use scaffolding.
+####
+#### This explain why we only allow specifying gapdoc.main.
+#### The scaffolding code will still honor it, though, just in case.
+#!         <Mark><A>main</A></Mark>
+#!         <Item>
+#!             The name of the main XML file of the package manual.
+#!             This exists primarily to support packages with existing manual
+#!             which use a filename here which differs from the default.
+#!             In particular, specifying this is unnecessary when using scaffolding.
+#!             <Br/>
+#!             <E>Default value: <C>PACKAGENAME.xml</C></E>.
+#!         </Item>
+#!
+#!         <Mark><A>files</A></Mark>
+#!         <Item>
+#!             A list of files (given by paths relative to the package directory)
+#!             to be scanned for &GAPDoc; documentation comments.
+#!             Usually it is more convenient to use <A>gapdoc.scan_dirs</A>, see below.
+#!         </Item>
+#!
+#!         <Mark><A>scan_dirs</A></Mark>
+#!         <Item>
+#!             A list of subdirectories of the package directory (given as relative paths)
+#!             which &AutoDoc; then scans for .gi, .gd and .g files; all of these files
+#!             are then scanned for &GAPDoc; documentation comments.
+#!             <Br/>
+#!             <E>Default value: <C>[ "gap", "lib", "examples", "examples/doc" ]</C>.</E>
+#!         </Item>
+#!
+#!         </List>
+#!     </Item>
+## This is the maketest part. Still under construction.
+#!        <Mark><A>maketest</A></Mark>
+#!        <Item>
+#!          The maketest item can be true or a record. When it is true,
+#!          a simple maketest.g is created in the main package directory,
+#!          which can be used to test the examples from the manual. As a record,
+#!          the entry can have the following entries itself, to specify some options.
+#!          <List>
+#!          <Mark>filename</Mark>
+#!          <Item>
+#!            Sets the name of the test file.
+#!          </Item>
+#!          <Mark>commands</Mark>
+#!          <Item>
+#!            A list of strings, each one a command, which
+#!            will be executed at the beginning of the test file.
+#!          </Item>
+#!          </List>
+#!        </Item>
+#!
+#!     </List>
+#! </Item>
+#! </List>
+#!
+#! @Returns nothing
+#! @Arguments package_name[, option_record ]
+#! @ChapterInfo AutoDoc, The AutoDoc() function
+DeclareGlobalFunction( "AutoDoc" );
+
diff --git a/samples/GAP/Magic.gi b/samples/GAP/Magic.gi
new file mode 100644
index 00000000..5202a1de
--- /dev/null
+++ b/samples/GAP/Magic.gi
@@ -0,0 +1,534 @@
+#############################################################################
+##
+##  Magic.gi                                         AutoDoc package
+##
+##  Copyright 2013, Max Horn, JLU Giessen
+##                  Sebastian Gutsche, University of Kaiserslautern
+##
+#############################################################################
+
+# Check if a string has the given suffix or not. Another
+# name for this would "StringEndsWithOtherString".
+# For example, AUTODOC_HasSuffix("file.gi", ".gi") returns
+# true while AUTODOC_HasSuffix("file.txt", ".gi") returns false.
+BindGlobal( "AUTODOC_HasSuffix",
+function(str, suffix)
+    local n, m;
+    n := Length(str);
+    m := Length(suffix);
+    return n >= m and str{[n-m+1..n]} = suffix;
+end );
+
+# Given a string containing a ".", , return its suffix,
+# i.e. the bit after the last ".". For example, given "test.txt",
+# it returns "txt".
+BindGlobal( "AUTODOC_GetSuffix",
+function(str)
+    local i;
+    i := Length(str);
+    while i > 0 and str[i] <> '.' do i := i - 1; od;
+    if i < 0 then return ""; fi;
+    return str{[i+1..Length(str)]};
+end );
+
+# Check whether the given directory exists, and if not, attempt
+# to create it.
+BindGlobal( "AUTODOC_CreateDirIfMissing",
+function(d)
+    local tmp;
+    if not IsDirectoryPath(d) then
+        tmp := CreateDir(d); # Note: CreateDir is currently undocumented
+        if tmp = fail then
+            Error("Cannot create directory ", d, "\n",
+                  "Error message: ", LastSystemError().message, "\n");
+            return false;
+        fi;
+    fi;
+    return true;
+end );
+
+
+# Scan the given (by name) subdirs of a package dir for
+# files with one of the given extensions, and return the corresponding
+# filenames, as relative paths (relative to the package dir).
+#
+# For example, the invocation
+#   AUTODOC_FindMatchingFiles("AutoDoc", [ "gap/" ], [ "gi", "gd" ]);
+# might return a list looking like
+#  [ "gap/AutoDocMainFunction.gd", "gap/AutoDocMainFunction.gi", ... ]
+BindGlobal( "AUTODOC_FindMatchingFiles",
+function (pkg, subdirs, extensions)
+    local d_rel, d, tmp, files, result;
+
+    result := [];
+
+    for d_rel in subdirs do
+        # Get the absolute path to the directory in side the package...
+        d := DirectoriesPackageLibrary( pkg, d_rel );
+        if IsEmpty( d ) then
+            continue;
+        fi;
+        d := d[1];
+        # ... but also keep the relative path (such as "gap")
+        d_rel := Directory( d_rel );
+
+        files := DirectoryContents( d );
+        Sort( files );
+        for tmp in files do
+            if not AUTODOC_GetSuffix( tmp ) in [ "g", "gi", "gd", "autodoc" ] then
+                continue;
+            fi;
+            if not IsReadableFile( Filename( d, tmp ) ) then
+                continue;
+            fi;
+            Add( result, Filename( d_rel, tmp ) );
+        od;
+    od;
+    return result;
+end );
+
+
+# AutoDoc(pkg[, opt])
+#
+## Make this function callable with the package_name AutoDocWorksheet.
+## Which will then create a worksheet!
+InstallGlobalFunction( AutoDoc,
+function( arg )
+    local pkg, package_info, opt, scaffold, gapdoc, maketest,
+          autodoc, pkg_dir, doc_dir, doc_dir_rel, d, tmp,
+          title_page, tree, is_worksheet, position_document_class, i, gapdoc_latex_option_record;
+    
+    pkg := arg[1];
+    
+    if LowercaseString( pkg ) = "autodocworksheet" then
+        is_worksheet := true;
+        package_info := rec( );
+        pkg_dir := DirectoryCurrent( );
+    else
+        is_worksheet := false;
+        package_info := PackageInfo( pkg )[ 1 ];
+        pkg_dir := DirectoriesPackageLibrary( pkg, "" )[1];
+    fi;
+
+    if Length(arg) >= 2 then
+        opt := arg[2];
+    else
+        opt := rec();
+    fi;
+
+    # Check for certain user supplied options, and if present, add them
+    # to the opt record.
+    tmp := function( key )
+        local val;
+        val := ValueOption( key );
+        if val <> fail then
+            opt.(key) := val;
+        fi;
+    end;
+    
+    tmp( "dir" );
+    tmp( "scaffold" );
+    tmp( "autodoc" );
+    tmp( "gapdoc" );
+    tmp( "maketest" );
+    
+    #
+    # Setup the output directory
+    #
+    if not IsBound( opt.dir ) then
+        doc_dir := "doc";
+    elif IsString( opt.dir ) or IsDirectory( opt.dir ) then
+        doc_dir := opt.dir;
+    else
+        Error( "opt.dir must be a string containing a path, or a directory object" );
+    fi;
+    
+    if IsString( doc_dir ) then
+        # Record the relative version of the path
+        doc_dir_rel := Directory( doc_dir );
+
+        # We intentionally do not use
+        #   DirectoriesPackageLibrary( pkg, "doc" )
+        # because it returns an empty list if the subdirectory is missing.
+        # But we want to handle that case by creating the directory.
+        doc_dir := Filename(pkg_dir, doc_dir);
+        doc_dir := Directory(doc_dir);
+
+    else
+        # TODO: doc_dir_rel = ... ?
+    fi;
+
+    # Ensure the output directory exists, create it if necessary
+    AUTODOC_CreateDirIfMissing(Filename(doc_dir, ""));
+    
+    # Let the developer know where we are generating the documentation.
+    # This helps diagnose problems where multiple instances of a package
+    # are visible to GAP and the wrong one is used for generating the
+    # documentation.
+    # TODO: Using Info() instead of Print?
+    Print( "Generating documentation in ", doc_dir, "\n" );
+
+    #
+    # Extract scaffolding settings, which can be controlled via
+    # opt.scaffold or package_info.AutoDoc. The former has precedence.
+    #
+    if not IsBound(opt.scaffold) then
+        # Default: enable scaffolding if and only if package_info.AutoDoc is present
+        if IsBound( package_info.AutoDoc ) then
+            scaffold := rec( );
+        fi;
+    elif IsRecord(opt.scaffold) then
+        scaffold := opt.scaffold;
+    elif IsBool(opt.scaffold) then
+        if opt.scaffold = true then
+            scaffold := rec();
+        fi;
+    else
+        Error("opt.scaffold must be a bool or a record");
+    fi;
+
+    # Merge package_info.AutoDoc into scaffold
+    if IsBound(scaffold) and IsBound( package_info.AutoDoc ) then
+        AUTODOC_APPEND_RECORD_WRITEONCE( scaffold, package_info.AutoDoc );
+    fi;
+    
+    if IsBound( scaffold ) then
+        AUTODOC_WriteOnce( scaffold, "TitlePage", true );
+        AUTODOC_WriteOnce( scaffold, "MainPage", true );
+    fi;
+
+    
+    #
+    # Extract AutoDoc settings
+    #
+    if not IsBound(opt.autodoc) and not is_worksheet then
+        # Enable AutoDoc support if the package depends on AutoDoc.
+        tmp := Concatenation( package_info.Dependencies.NeededOtherPackages,
+                              package_info.Dependencies.SuggestedOtherPackages );
+        if ForAny( tmp, x -> LowercaseString(x[1]) = "autodoc" ) then
+            autodoc := rec();
+        fi;
+    elif IsRecord(opt.autodoc) then
+        autodoc := opt.autodoc;
+    elif IsBool(opt.autodoc) and opt.autodoc = true then
+        autodoc := rec();
+    fi;
+    
+    if IsBound(autodoc) then
+        if not IsBound( autodoc.files ) then
+            autodoc.files := [ ];
+        fi;
+        
+        if not IsBound( autodoc.scan_dirs ) and not is_worksheet then
+            autodoc.scan_dirs := [ "gap", "lib", "examples", "examples/doc" ];
+        elif not IsBound( autodoc.scan_dirs ) and is_worksheet then
+            autodoc.scan_dirs := [ ];
+        fi;
+        
+        if not IsBound( autodoc.level ) then
+            autodoc.level := 0;
+        fi;
+        
+        PushOptions( rec( level_value := autodoc.level ) );
+        
+        if not is_worksheet then
+            Append( autodoc.files, AUTODOC_FindMatchingFiles(pkg, autodoc.scan_dirs, [ "g", "gi", "gd" ]) );
+        fi;
+    fi;
+
+    #
+    # Extract GAPDoc settings
+    #
+    if not IsBound( opt.gapdoc ) then
+        # Enable GAPDoc support by default
+        gapdoc := rec();
+    elif IsRecord( opt.gapdoc ) then
+        gapdoc := opt.gapdoc;
+    elif IsBool( opt.gapdoc ) and opt.gapdoc = true then
+        gapdoc := rec();
+    fi;
+    
+    #
+    # Extract test settings
+    #
+    
+    if IsBound( opt.maketest ) then
+        if IsRecord( opt.maketest ) then
+            maketest := opt.maketest;
+        elif opt.maketest = true then
+            maketest := rec( );
+        fi;
+    fi;
+    
+    if IsBound( gapdoc ) then
+
+        if not IsBound( gapdoc.main ) then
+            gapdoc.main := pkg;
+        fi;
+
+        # FIXME: the following may break if a package uses more than one book
+        if IsBound( package_info.PackageDoc ) and IsBound( package_info.PackageDoc[1].BookName ) then
+            gapdoc.bookname := package_info.PackageDoc[1].BookName;
+        elif not is_worksheet then
+            # Default: book name = package name
+            gapdoc.bookname := pkg;
+
+            Print("\n");
+            Print("WARNING: PackageInfo.g is missing a PackageDoc entry!\n");
+            Print("Without this, your package manual will not be recognized by the GAP help system.\n");
+            Print("You can correct this by adding the following to your PackageInfo.g:\n");
+            Print("PackageDoc := rec(\n");
+            Print("  BookName  := ~.PackageName,\n");
+            #Print("  BookName  := \"", pkg, "\",\n");
+            Print("  ArchiveURLSubset := [\"doc\"],\n");
+            Print("  HTMLStart := \"doc/chap0.html\",\n");
+            Print("  PDFFile   := \"doc/manual.pdf\",\n");
+            Print("  SixFile   := \"doc/manual.six\",\n");
+            Print("  LongTitle := ~.Subtitle,\n");
+            Print("),\n");
+            Print("\n");
+        fi;
+
+        if not IsBound( gapdoc.files ) then
+            gapdoc.files := [];
+        fi;
+
+        if not IsBound( gapdoc.scan_dirs ) and not is_worksheet then
+            gapdoc.scan_dirs := [ "gap", "lib", "examples", "examples/doc" ];
+        fi;
+        
+        if not is_worksheet then
+            Append( gapdoc.files, AUTODOC_FindMatchingFiles(pkg, gapdoc.scan_dirs, [ "g", "gi", "gd" ]) );
+        fi;
+
+        # Attempt to weed out duplicates as they may confuse GAPDoc (this
+        # won't work if there are any non-normalized paths in the list).
+        gapdoc.files := Set( gapdoc.files );
+        
+        # Convert the file paths in gapdoc.files, which are relative to
+        # the package directory, to paths which are relative to the doc directory.
+        # For this, we assume that doc_dir_rel is normalized (e.g.
+        # it does not contains '//') and relative.
+        d := Number( Filename( doc_dir_rel, "" ), x -> x = '/' );
+        d := Concatenation( ListWithIdenticalEntries(d, "../") );
+        gapdoc.files := List( gapdoc.files, f -> Concatenation( d, f ) );
+    fi;
+    
+    
+    # read tree
+    # FIXME: shouldn't tree be declared inside of an 'if IsBound(autodoc)' section?
+    tree := DocumentationTree( );
+    
+    if IsBound( autodoc ) then
+        if IsBound( autodoc.section_intros ) then
+            AUTODOC_PROCESS_INTRO_STRINGS( autodoc.section_intros : Tree := tree );
+        fi;
+    
+        AutoDocScanFiles( autodoc.files : PackageName := pkg, Tree := tree );
+    fi;
+    
+    if is_worksheet then
+        # FIXME: We use scaffold and autodoc here without checking whether
+        # they are bound. Does that mean worksheets always use them?
+        if IsRecord( scaffold.TitlePage ) and IsBound( scaffold.TitlePage.Title ) then
+            pkg := scaffold.TitlePage.Title;
+
+        elif IsBound( tree!.TitlePage.Title ) then
+            pkg := tree!.TitlePage.Title;
+
+        elif IsBound( autodoc.files ) and Length( autodoc.files ) > 0  then
+            pkg := autodoc.files[ 1 ];
+            
+            while Position( pkg, '/' ) <> fail do
+                Remove( pkg, 1 );
+            od;
+            
+            while Position( pkg, '.' ) <> fail do
+                Remove( pkg, Length( pkg ) );
+            od;
+
+        else
+            Error( "could not figure out a title." );
+        fi;
+        
+        if not IsString( pkg ) then
+            pkg := JoinStringsWithSeparator( pkg, " " );
+        fi;
+        
+        gapdoc.main := ReplacedString( pkg, " ", "_" );
+        gapdoc.bookname := ReplacedString( pkg, " ", "_" );
+    fi;
+    
+    #
+    # Generate scaffold
+    #
+    gapdoc_latex_option_record := rec( );
+    
+    if IsBound( scaffold ) then
+        ## Syntax is [ "class", [ "options" ] ]
+        if IsBound( scaffold.document_class ) then
+            position_document_class := PositionSublist( GAPDoc2LaTeXProcs.Head, "documentclass" );
+            
+            if IsString( scaffold.document_class ) then
+                scaffold.document_class := [ scaffold.document_class ];
+            fi;
+            
+            if position_document_class = fail then
+                Error( "something is wrong with the LaTeX header" );
+            fi;
+            
+            GAPDoc2LaTeXProcs.Head := Concatenation(
+                  GAPDoc2LaTeXProcs.Head{[ 1 .. PositionSublist( GAPDoc2LaTeXProcs.Head, "{", position_document_class ) ]},
+                  scaffold.document_class[ 1 ],
+                  GAPDoc2LaTeXProcs.Head{[ PositionSublist( GAPDoc2LaTeXProcs.Head, "}", position_document_class ) .. Length( GAPDoc2LaTeXProcs.Head ) ]} );
+            
+            if Length( scaffold.document_class ) = 2 then
+                
+                GAPDoc2LaTeXProcs.Head := Concatenation(
+                      GAPDoc2LaTeXProcs.Head{[ 1 .. PositionSublist( GAPDoc2LaTeXProcs.Head, "[", position_document_class ) ]},
+                      scaffold.document_class[ 2 ],
+                      GAPDoc2LaTeXProcs.Head{[ PositionSublist( GAPDoc2LaTeXProcs.Head, "]", position_document_class ) .. Length( GAPDoc2LaTeXProcs.Head ) ]} );
+            fi;
+        fi;
+        
+        if IsBound( scaffold.latex_header_file ) then
+            GAPDoc2LaTeXProcs.Head := StringFile( scaffold.latex_header_file );
+        fi;
+        
+        if IsBound( scaffold.gapdoc_latex_options ) then
+            if IsRecord( scaffold.gapdoc_latex_options ) then
+                for i in RecNames( scaffold.gapdoc_latex_options ) do
+                    if not IsString( scaffold.gapdoc_latex_options.( i ) )
+                       and IsList( scaffold.gapdoc_latex_options.( i ) )
+                       and LowercaseString( scaffold.gapdoc_latex_options.( i )[ 1 ] ) = "file" then
+                        scaffold.gapdoc_latex_options.( i ) := StringFile( scaffold.gapdoc_latex_options.( i )[ 2 ] );
+                    fi;
+                od;
+                
+                gapdoc_latex_option_record := scaffold.gapdoc_latex_options;
+            fi;
+        fi;
+        
+        if not IsBound( scaffold.includes ) then
+            scaffold.includes := [ ];
+        fi;
+
+        if IsBound( autodoc ) then
+            # If scaffold.includes is already set, then we add
+            # AutoDocMainFile.xml to it, but *only* if it not already
+            # there. This way, package authors can control where
+            # it is put in their includes list.
+            if not "AutoDocMainFile.xml" in scaffold.includes then
+                Add( scaffold.includes, "AutoDocMainFile.xml" );
+            fi;
+        fi;
+
+        if IsBound( scaffold.bib ) and IsBool( scaffold.bib ) then
+            if scaffold.bib = true then
+                scaffold.bib := Concatenation( pkg, ".bib" );
+            else
+                Unbind( scaffold.bib );
+            fi;
+        elif not IsBound( scaffold.bib ) then
+            # If there is a doc/PKG.bib file, assume that we want to reference it in the scaffold.
+            if IsReadableFile( Filename( doc_dir, Concatenation( pkg, ".bib" ) ) ) then
+                scaffold.bib := Concatenation( pkg, ".bib" );
+            fi;
+        fi;
+        
+        AUTODOC_WriteOnce( scaffold, "index", true );
+
+        if IsBound( gapdoc ) then
+            if AUTODOC_GetSuffix( gapdoc.main ) = "xml" then
+                scaffold.main_xml_file := gapdoc.main;
+            else
+                scaffold.main_xml_file := Concatenation( gapdoc.main, ".xml" );
+            fi;
+        fi;
+
+        # TODO: It should be possible to only rebuild the title page. (Perhaps also only the main page? but this is less important)
+        if IsBound( scaffold.TitlePage ) then
+            if IsRecord( scaffold.TitlePage ) then
+                title_page := scaffold.TitlePage;
+            else
+                title_page := rec( );
+            fi;
+            
+            AUTODOC_WriteOnce( title_page, "dir", doc_dir );
+            AUTODOC_APPEND_RECORD_WRITEONCE( title_page, tree!.TitlePage );
+            
+            if not is_worksheet then
+                AUTODOC_APPEND_RECORD_WRITEONCE( title_page, ExtractTitleInfoFromPackageInfo( pkg ) );
+            fi;
+            
+            CreateTitlePage( title_page );
+        fi;
+        
+        if IsBound( scaffold.MainPage ) and scaffold.MainPage <> false then
+            scaffold.dir := doc_dir;
+            scaffold.book_name := pkg;
+            CreateMainPage( scaffold );
+        fi;
+    fi;
+    
+    #
+    # Run AutoDoc
+    #
+    if IsBound( autodoc ) then
+        WriteDocumentation( tree, doc_dir );
+    fi;
+    
+    
+    #
+    # Run GAPDoc
+    #
+    if IsBound( gapdoc ) then
+
+        # Ask GAPDoc to use UTF-8 as input encoding for LaTeX, as the XML files
+        # of the documentation are also in UTF-8 encoding, and may contain characters
+        # not contained in the default Latin 1 encoding.
+        SetGapDocLaTeXOptions( "utf8", gapdoc_latex_option_record );
+
+        MakeGAPDocDoc( doc_dir, gapdoc.main, gapdoc.files, gapdoc.bookname, "MathJax" );
+
+        CopyHTMLStyleFiles( Filename( doc_dir, "" ) );
+
+        # The following (undocumented) API is there for compatibility
+        # with old-style gapmacro.tex based package manuals. It
+        # produces a manual.lab file which those packages can use if
+        # they wish to link to things in the manual we are currently
+        # generating. This can probably be removed eventually, but for
+        # now, doing it does not hurt.
+        
+        # FIXME: It seems that this command does not work if pdflatex
+        #        is not present. Maybe we should remove it.
+        
+        if not is_worksheet then
+            GAPDocManualLab( pkg );
+        fi;
+
+    fi;
+    
+    if IsBound( maketest ) then
+        
+        AUTODOC_WriteOnce( maketest, "filename", "maketest.g" );
+        AUTODOC_WriteOnce( maketest, "folder", pkg_dir );
+        AUTODOC_WriteOnce( maketest, "scan_dir", doc_dir );
+        AUTODOC_WriteOnce( maketest, "files_to_scan", gapdoc.files );
+
+        if IsString( maketest.folder ) then
+            maketest.folder := Directory( maketest.folder );
+        fi;
+        
+        if IsString( maketest.scan_dir ) then
+            maketest.scan_dir := Directory( maketest.scan_dir );
+        fi;
+        
+        AUTODOC_WriteOnce( maketest, "commands", [ ] );
+        AUTODOC_WriteOnce( maketest, "book_name", gapdoc.main );
+        
+        CreateMakeTest( maketest );
+    fi;
+
+    return true;
+end );
diff --git a/samples/GAP/PackageInfo.g b/samples/GAP/PackageInfo.g
new file mode 100644
index 00000000..68e5ecdb
--- /dev/null
+++ b/samples/GAP/PackageInfo.g
@@ -0,0 +1,115 @@
+#############################################################################
+##  
+##  PackageInfo.g for the package `cvec'                      Max Neunhoeffer
+##
+##  (created from Frank Lübeck's PackageInfo.g template file)
+##  
+
+SetPackageInfo( rec(
+
+PackageName := "cvec",
+Subtitle := "Compact vectors over finite fields",
+Version := "2.5.1",
+Date := "04/04/2014", # dd/mm/yyyy format
+
+##  Information about authors and maintainers.
+Persons := [
+  rec( 
+    LastName      := "Neunhoeffer",
+    FirstNames    := "Max",
+    IsAuthor      := true,
+    IsMaintainer  := false,
+    Email         := "neunhoef@mcs.st-and.ac.uk",
+    WWWHome       := "http://www-groups.mcs.st-and.ac.uk/~neunhoef/",
+    PostalAddress := Concatenation( [
+                       "School of Mathematics and Statistics\n",
+                       "University of St Andrews\n",
+                       "Mathematical Institute\n",
+                       "North Haugh\n",
+                       "St Andrews, Fife KY16 9SS\n",
+                       "Scotland, UK" ] ),
+    Place         := "St Andrews",
+    Institution   := "University of St Andrews"
+  ),
+],
+
+##  Status information. Currently the following cases are recognized:
+##    "accepted"      for successfully refereed packages
+##    "deposited"     for packages for which the GAP developers agreed 
+##                    to distribute them with the core GAP system
+##    "dev"           for development versions of packages 
+##    "other"         for all other packages
+##
+# Status := "accepted",
+Status := "deposited",
+
+##  You must provide the next two entries if and only if the status is 
+##  "accepted" because is was successfully refereed:
+# format: 'name (place)'
+# CommunicatedBy := "Mike Atkinson (St. Andrews)",
+#CommunicatedBy := "",
+# format: mm/yyyy
+# AcceptDate := "08/1999",
+#AcceptDate := "",
+
+PackageWWWHome := "http://neunhoef.github.io/cvec/",
+README_URL     := Concatenation(~.PackageWWWHome, "README"),
+PackageInfoURL := Concatenation(~.PackageWWWHome, "PackageInfo.g"),
+ArchiveURL     := Concatenation("https://github.com/neunhoef/cvec/",
+                                "releases/download/v", ~.Version,
+                                "/cvec-", ~.Version),
+ArchiveFormats := ".tar.gz .tar.bz2",
+
+##  Here you  must provide a short abstract explaining the package content 
+##  in HTML format (used on the package overview Web page) and an URL 
+##  for a Webpage with more detailed information about the package
+##  (not more than a few lines, less is ok):
+##  Please, use '<span class="pkgname">GAP</span>' and
+##  '<span class="pkgname">MyPKG</span>' for specifing package names.
+##  
+AbstractHTML := 
+  "This package provides an implementation of compact vectors over finite\
+   fields. Contrary to earlier implementations no table lookups are used\
+   but only word-based processor arithmetic. This allows for bigger finite\
+   fields and higher speed.",
+
+PackageDoc := rec(
+  BookName  := "cvec",
+  ArchiveURLSubset := ["doc"],
+  HTMLStart := "doc/chap0.html",
+  PDFFile   := "doc/manual.pdf",
+  SixFile   := "doc/manual.six",
+  LongTitle := "Compact vectors over finite fields",
+),
+
+Dependencies := rec(
+  GAP := ">=4.5.5",
+  NeededOtherPackages := [
+    ["GAPDoc", ">= 1.2"],
+    ["IO", ">= 4.1"],
+    ["orb", ">= 4.2"],
+  ],
+  SuggestedOtherPackages := [],
+  ExternalConditions := []
+),
+
+AvailabilityTest := function()
+  if not "cvec" in SHOW_STAT() and
+     Filename(DirectoriesPackagePrograms("cvec"), "cvec.so") = fail then
+    #Info(InfoWarning, 1, "cvec: kernel cvec functions not available.");
+    return fail;
+  fi;
+  return true;
+end,
+
+##  *Optional*, but recommended: path relative to package root to a file which 
+##  contains as many tests of the package functionality as sensible.
+#TestFile := "tst/testall.g",
+
+##  *Optional*: Here you can list some keyword related to the topic 
+##  of the package.
+Keywords := []
+
+));
+
+
diff --git a/samples/GAP/example.gd b/samples/GAP/example.gd
new file mode 100644
index 00000000..c285ea32
--- /dev/null
+++ b/samples/GAP/example.gd
@@ -0,0 +1,23 @@
+#############################################################################
+##
+#W  example.gd
+##
+##  This file contains a sample of a GAP declaration file.
+##
+DeclareProperty( "SomeProperty", IsLeftModule );
+DeclareGlobalFunction( "SomeGlobalFunction" );
+
+
+#############################################################################
+##
+#C  IsQuuxFrobnicator(<R>)
+##
+##  <ManSection>
+##  <Filt Name="IsQuuxFrobnicator" Arg='R' Type='Category'/>
+##
+##  <Description>
+##  Tests whether R is a quux frobnicator.
+##  </Description>
+##  </ManSection>
+##
+DeclareSynonym( "IsQuuxFrobnicator", IsField and IsGroup );
diff --git a/samples/GAP/example.gi b/samples/GAP/example.gi
new file mode 100644
index 00000000..c9c5e55d
--- /dev/null
+++ b/samples/GAP/example.gi
@@ -0,0 +1,64 @@
+#############################################################################
+##
+#W  example.gd
+##
+##  This file contains a sample of a GAP implementation file.
+##
+
+
+#############################################################################
+##
+#M  SomeOperation( <val> )
+##
+##  performs some operation on <val>
+##
+InstallMethod( SomeProperty,
+    "for left modules",
+    [ IsLeftModule ], 0,
+    function( M )
+    if IsFreeLeftModule( M ) and not IsTrivial( M ) then
+      return true;
+    fi;
+    TryNextMethod();
+    end );
+
+
+
+#############################################################################
+##
+#F  SomeGlobalFunction( )
+##
+##  A global variadic funfion.
+##
+InstallGlobalFunction( SomeGlobalFunction, function( arg )
+    if Length( arg ) = 3 then
+      return arg[1] + arg[2] * arg[3];
+    elif Length( arg ) = 2 then
+      return arg[1] - arg[2]
+    else
+      Error( "usage: SomeGlobalFunction( <x>, <y>[, <z>] )" );
+    fi;
+    end );
+
+
+#
+# A plain function.
+#
+SomeFunc := function(x, y)
+    local z, func, tmp, j;
+    z := x * 1.0;
+    y := 17^17 - y;
+    func := a -> a mod 5;
+    tmp := List( [1..50], func );
+    while y > 0 do
+        for j in tmp do
+            Print(j, "\n");
+        od;
+        repeat
+            y := y - 1;
+        until 0 < 1;
+        y := y -1;
+    od;
+    return z;
+end;
+        
\ No newline at end of file
diff --git a/samples/GAP/vspc.gd b/samples/GAP/vspc.gd
new file mode 100644
index 00000000..d381e6f1
--- /dev/null
+++ b/samples/GAP/vspc.gd
@@ -0,0 +1,822 @@
+#############################################################################
+##
+#W  vspc.gd                     GAP library                     Thomas Breuer
+##
+##
+#Y  Copyright (C)  1997,  Lehrstuhl D für Mathematik,  RWTH Aachen,  Germany
+#Y  (C) 1998 School Math and Comp. Sci., University of St Andrews, Scotland
+#Y  Copyright (C) 2002 The GAP Group
+##
+##  This file declares the operations for vector spaces.
+##
+##  The operations for bases of free left modules can be found in the file
+##  <F>lib/basis.gd<F>.
+##
+
+
+#############################################################################
+##
+#C  IsLeftOperatorRing(<R>)
+##
+##  <ManSection>
+##  <Filt Name="IsLeftOperatorRing" Arg='R' Type='Category'/>
+##
+##  <Description>
+##  </Description>
+##  </ManSection>
+##
+DeclareSynonym( "IsLeftOperatorRing",
+    IsLeftOperatorAdditiveGroup and IsRing and IsAssociativeLOpDProd );
+#T really?
+
+
+#############################################################################
+##
+#C  IsLeftOperatorRingWithOne(<R>)
+##
+##  <ManSection>
+##  <Filt Name="IsLeftOperatorRingWithOne" Arg='R' Type='Category'/>
+##
+##  <Description>
+##  </Description>
+##  </ManSection>
+##
+DeclareSynonym( "IsLeftOperatorRingWithOne",
+    IsLeftOperatorAdditiveGroup and IsRingWithOne
+    and IsAssociativeLOpDProd );
+#T really?
+
+
+#############################################################################
+##
+#C  IsLeftVectorSpace( <V> )
+#C  IsVectorSpace( <V> )
+##
+##  <#GAPDoc Label="IsLeftVectorSpace">
+##  <ManSection>
+##  <Filt Name="IsLeftVectorSpace" Arg='V' Type='Category'/>
+##  <Filt Name="IsVectorSpace" Arg='V' Type='Category'/>
+##
+##  <Description>
+##  A <E>vector space</E> in &GAP; is a free left module
+##  (see&nbsp;<Ref Func="IsFreeLeftModule"/>) over a division ring
+##  (see Chapter&nbsp;<Ref Chap="Fields and Division Rings"/>).
+##  <P/>
+##  Whenever we talk about an <M>F</M>-vector space <A>V</A> then <A>V</A> is
+##  an additive group (see&nbsp;<Ref Func="IsAdditiveGroup"/>) on which the
+##  division ring <M>F</M> acts via multiplication from the left such that
+##  this action and the addition in <A>V</A> are left and right distributive.
+##  The division ring <M>F</M> can be accessed as value of the attribute
+##  <Ref Func="LeftActingDomain"/>.
+##  <P/>
+##  Vector spaces in &GAP; are always <E>left</E> vector spaces,
+##  <Ref Filt="IsLeftVectorSpace"/> and <Ref Filt="IsVectorSpace"/> are
+##  synonyms.
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonym( "IsLeftVectorSpace",
+    IsLeftModule and IsLeftActedOnByDivisionRing );
+
+DeclareSynonym( "IsVectorSpace", IsLeftVectorSpace );
+
+InstallTrueMethod( IsFreeLeftModule,
+    IsLeftModule and IsLeftActedOnByDivisionRing );
+
+
+#############################################################################
+##
+#F  IsGaussianSpace( <V> )
+##
+##  <#GAPDoc Label="IsGaussianSpace">
+##  <ManSection>
+##  <Func Name="IsGaussianSpace" Arg='V'/>
+##
+##  <Description>
+##  The filter <Ref Filt="IsGaussianSpace"/> (see&nbsp;<Ref Sect="Filters"/>)
+##  for the row space (see&nbsp;<Ref Func="IsRowSpace"/>)
+##  or matrix space (see&nbsp;<Ref Func="IsMatrixSpace"/>) <A>V</A>
+##  over the field <M>F</M>, say,
+##  indicates that the entries of all row vectors or matrices in <A>V</A>,
+##  respectively, are all contained in <M>F</M>.
+##  In this case, <A>V</A> is called a <E>Gaussian</E> vector space.
+##  Bases for Gaussian spaces can be computed using Gaussian elimination for
+##  a given list of vector space generators.
+##  <Example><![CDATA[
+##  gap> mats:= [ [[1,1],[2,2]], [[3,4],[0,1]] ];;
+##  gap> V:= VectorSpace( Rationals, mats );;
+##  gap> IsGaussianSpace( V );
+##  true
+##  gap> mats[1][1][1]:= E(4);;   # an element in an extension field
+##  gap> V:= VectorSpace( Rationals, mats );;
+##  gap> IsGaussianSpace( V );
+##  false
+##  gap> V:= VectorSpace( Field( Rationals, [ E(4) ] ), mats );;
+##  gap> IsGaussianSpace( V );
+##  true
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareFilter( "IsGaussianSpace", IsVectorSpace );
+
+InstallTrueMethod( IsGaussianSpace,
+    IsVectorSpace and IsFullMatrixModule );
+
+InstallTrueMethod( IsGaussianSpace,
+    IsVectorSpace and IsFullRowModule );
+
+
+#############################################################################
+##
+#C  IsDivisionRing( <D> )
+##
+##  <#GAPDoc Label="IsDivisionRing">
+##  <ManSection>
+##  <Filt Name="IsDivisionRing" Arg='D' Type='Category'/>
+##
+##  <Description>
+##  A <E>division ring</E> in &GAP; is a nontrivial associative algebra
+##  <A>D</A> with a multiplicative inverse for each nonzero element.
+##  In &GAP; every division ring is a vector space over a division ring
+##  (possibly over itself).
+##  Note that being a division ring is thus not a property that a ring can
+##  get, because a ring is usually not represented as a vector space.
+##  <P/>
+##  The field of coefficients is stored as the value of the attribute
+##  <Ref Func="LeftActingDomain"/> of <A>D</A>.
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonymAttr( "IsDivisionRing",
+        IsMagmaWithInversesIfNonzero
+    and IsLeftOperatorRingWithOne
+    and IsLeftVectorSpace
+    and IsNonTrivial
+    and IsAssociative
+    and IsEuclideanRing );
+
+
+#############################################################################
+##
+#A  GeneratorsOfLeftVectorSpace( <V> )
+#A  GeneratorsOfVectorSpace( <V> )
+##
+##  <#GAPDoc Label="GeneratorsOfLeftVectorSpace">
+##  <ManSection>
+##  <Attr Name="GeneratorsOfLeftVectorSpace" Arg='V'/>
+##  <Attr Name="GeneratorsOfVectorSpace" Arg='V'/>
+##
+##  <Description>
+##  For an <M>F</M>-vector space <A>V</A>,
+##  <Ref Attr="GeneratorsOfLeftVectorSpace"/> returns a list of vectors in
+##  <A>V</A> that generate <A>V</A> as an <M>F</M>-vector space.
+##  <Example><![CDATA[
+##  gap> GeneratorsOfVectorSpace( FullRowSpace( Rationals, 3 ) );
+##  [ [ 1, 0, 0 ], [ 0, 1, 0 ], [ 0, 0, 1 ] ]
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonymAttr( "GeneratorsOfLeftVectorSpace",
+    GeneratorsOfLeftOperatorAdditiveGroup );
+
+DeclareSynonymAttr( "GeneratorsOfVectorSpace",
+    GeneratorsOfLeftOperatorAdditiveGroup );
+
+
+#############################################################################
+##
+#A  CanonicalBasis( <V> )
+##
+##  <#GAPDoc Label="CanonicalBasis">
+##  <ManSection>
+##  <Attr Name="CanonicalBasis" Arg='V'/>
+##
+##  <Description>
+##  If the vector space <A>V</A> supports a <E>canonical basis</E> then
+##  <Ref Attr="CanonicalBasis"/> returns this basis,
+##  otherwise <K>fail</K> is returned.
+##  <P/>
+##  The defining property of a canonical basis is that its vectors are
+##  uniquely determined by the vector space.
+##  If canonical bases exist for two vector spaces over the same left acting
+##  domain (see&nbsp;<Ref Func="LeftActingDomain"/>) then the equality of
+##  these vector spaces can be decided by comparing the canonical bases.
+##  <P/>
+##  The exact meaning of a canonical basis depends on the type of <A>V</A>.
+##  Canonical bases are defined for example for Gaussian row and matrix
+##  spaces (see&nbsp;<Ref Sect="Row and Matrix Spaces"/>).
+##  <P/>
+##  If one designs a new kind of vector spaces
+##  (see&nbsp;<Ref Sect="How to Implement New Kinds of Vector Spaces"/>) and
+##  defines a canonical basis for these spaces then the
+##  <Ref Attr="CanonicalBasis"/> method one installs
+##  (see&nbsp;<Ref Func="InstallMethod"/>)
+##  must <E>not</E> call <Ref Func="Basis"/>.
+##  On the other hand, one probably should install a <Ref Func="Basis"/>
+##  method that simply calls <Ref Attr="CanonicalBasis"/>,
+##  the value of the method
+##  (see&nbsp;<Ref Sect="Method Installation"/> and
+##  <Ref Sect="Applicable Methods and Method Selection"/>)
+##  being <C>CANONICAL_BASIS_FLAGS</C>.
+##  <Example><![CDATA[
+##  gap> vecs:= [ [ 1, 2, 3 ], [ 1, 1, 1 ], [ 1, 1, 1 ] ];;
+##  gap> V:= VectorSpace( Rationals, vecs );;
+##  gap> B:= CanonicalBasis( V );
+##  CanonicalBasis( <vector space over Rationals, with 3 generators> )
+##  gap> BasisVectors( B );
+##  [ [ 1, 0, -1 ], [ 0, 1, 2 ] ]
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareAttribute( "CanonicalBasis", IsFreeLeftModule );
+
+
+#############################################################################
+##
+#F  IsRowSpace( <V> )
+##
+##  <#GAPDoc Label="IsRowSpace">
+##  <ManSection>
+##  <Func Name="IsRowSpace" Arg='V'/>
+##
+##  <Description>
+##  A <E>row space</E> in &GAP; is a vector space that consists of
+##  row vectors (see Chapter&nbsp;<Ref Chap="Row Vectors"/>).
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonym( "IsRowSpace", IsRowModule and IsVectorSpace );
+
+
+#############################################################################
+##
+#F  IsGaussianRowSpace( <V> )
+##
+##  <ManSection>
+##  <Func Name="IsGaussianRowSpace" Arg='V'/>
+##
+##  <Description>
+##  A row space is <E>Gaussian</E> if the left acting domain contains all
+##  scalars that occur in the vectors.
+##  Thus one can use Gaussian elimination in the calculations.
+##  <P/>
+##  (Otherwise the space is non-Gaussian.
+##  We will need a flag for this to write down methods that delegate from
+##  non-Gaussian spaces to Gaussian ones.)
+##  <!-- reformulate this when it becomes documented -->
+##  </Description>
+##  </ManSection>
+##
+DeclareSynonym( "IsGaussianRowSpace", IsGaussianSpace and IsRowSpace );
+
+
+#############################################################################
+##
+#F  IsNonGaussianRowSpace( <V> )
+##
+##  <ManSection>
+##  <Func Name="IsNonGaussianRowSpace" Arg='V'/>
+##
+##  <Description>
+##  If an <M>F</M>-vector space <A>V</A> is in the filter
+##  <Ref Func="IsNonGaussianRowSpace"/> then this expresses that <A>V</A>
+##  consists of row vectors (see&nbsp;<Ref Func="IsRowVector"/>) such
+##  that not all entries in these row vectors are contained in <M>F</M>
+##  (so Gaussian elimination cannot be used to compute an <M>F</M>-basis
+##  from a list of vector space generators),
+##  and that <A>V</A> is handled via the mechanism of nice bases
+##  (see&nbsp;<Ref ???="..."/>) in the following way.
+##  Let <M>K</M> be the field spanned by the entries of all vectors in
+##  <A>V</A>.
+##  Then the <Ref Attr="NiceFreeLeftModuleInfo"/> value of <A>V</A> is
+##  a basis <M>B</M> of the field extension <M>K / ( K \cap F )</M>,
+##  and the <Ref Func="NiceVector"/> value of <M>v \in <A>V</A></M>
+##  is defined by replacing each entry of <M>v</M> by the list of its
+##  <M>B</M>-coefficients, and then forming the concatenation.
+##  <P/>
+##  So the associated nice vector space is a Gaussian row space
+##  (see&nbsp;<Ref Func="IsGaussianRowSpace"/>).
+##  </Description>
+##  </ManSection>
+##
+DeclareHandlingByNiceBasis( "IsNonGaussianRowSpace",
+    "for non-Gaussian row spaces" );
+
+
+#############################################################################
+##
+#F  IsMatrixSpace( <V> )
+##
+##  <#GAPDoc Label="IsMatrixSpace">
+##  <ManSection>
+##  <Func Name="IsMatrixSpace" Arg='V'/>
+##
+##  <Description>
+##  A <E>matrix space</E> in &GAP; is a vector space that consists of matrices
+##  (see Chapter&nbsp;<Ref Chap="Matrices"/>).
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonym( "IsMatrixSpace", IsMatrixModule and IsVectorSpace );
+
+
+#############################################################################
+##
+#F  IsGaussianMatrixSpace( <V> )
+##
+##  <ManSection>
+##  <Func Name="IsGaussianMatrixSpace" Arg='V'/>
+##
+##  <Description>
+##  A matrix space is Gaussian if the left acting domain contains all
+##  scalars that occur in the vectors.
+##  Thus one can use Gaussian elimination in the calculations.
+##  <P/>
+##  (Otherwise the space is non-Gaussian.
+##  We will need a flag for this to write down methods that delegate from
+##  non-Gaussian spaces to Gaussian ones.)
+##  </Description>
+##  </ManSection>
+##
+DeclareSynonym( "IsGaussianMatrixSpace", IsGaussianSpace and IsMatrixSpace );
+
+
+#############################################################################
+##
+#F  IsNonGaussianMatrixSpace( <V> )
+##
+##  <ManSection>
+##  <Func Name="IsNonGaussianMatrixSpace" Arg='V'/>
+##
+##  <Description>
+##  If an <M>F</M>-vector space <A>V</A> is in the filter
+##  <Ref Func="IsNonGaussianMatrixSpace"/>
+##  then this expresses that <A>V</A> consists of matrices
+##  (see&nbsp;<Ref Func="IsMatrix"/>)
+##  such that not all entries in these matrices are contained in <M>F</M>
+##  (so Gaussian elimination cannot be used to compute an <M>F</M>-basis
+##  from a list of vector space generators),
+##  and that <A>V</A> is handled via the mechanism of nice bases
+##  (see&nbsp;<Ref ???="..."/>) in the following way.
+##  Let <M>K</M> be the field spanned by the entries of all vectors in <A>V</A>.
+##  The <Ref Attr="NiceFreeLeftModuleInfo"/> value of <A>V</A> is irrelevant,
+##  and the <Ref Func="NiceVector"/> value of <M>v \in <A>V</A></M>
+##  is defined as the concatenation of the rows of <M>v</M>.
+##  <P/>
+##  So the associated nice vector space is a (not necessarily Gaussian)
+##  row space (see&nbsp;<Ref Func="IsRowSpace"/>).
+##  </Description>
+##  </ManSection>
+##
+DeclareHandlingByNiceBasis( "IsNonGaussianMatrixSpace",
+    "for non-Gaussian matrix spaces" );
+
+
+#############################################################################
+##
+#A  NormedRowVectors( <V> ) . . .  normed vectors in a Gaussian row space <V>
+##
+##  <#GAPDoc Label="NormedRowVectors">
+##  <ManSection>
+##  <Attr Name="NormedRowVectors" Arg='V'/>
+##
+##  <Description>
+##  For a finite Gaussian row space <A>V</A>
+##  (see&nbsp;<Ref Func="IsRowSpace"/>, <Ref Func="IsGaussianSpace"/>),
+##  <Ref Attr="NormedRowVectors"/> returns a list of those nonzero
+##  vectors in <A>V</A> that have a one in the first nonzero component.
+##  <P/>
+##  The result list can be used as action domain for the action of a matrix
+##  group via <Ref Func="OnLines"/>, which yields the natural action on
+##  one-dimensional subspaces of <A>V</A>
+##  (see also&nbsp;<Ref Func="Subspaces"/>).
+##  <Example><![CDATA[
+##  gap> vecs:= NormedRowVectors( GF(3)^2 );
+##  [ [ 0*Z(3), Z(3)^0 ], [ Z(3)^0, 0*Z(3) ], [ Z(3)^0, Z(3)^0 ], 
+##    [ Z(3)^0, Z(3) ] ]
+##  gap> Action( GL(2,3), vecs, OnLines );
+##  Group([ (3,4), (1,2,4) ])
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareAttribute( "NormedRowVectors", IsGaussianSpace );
+
+
+#############################################################################
+##
+#A  TrivialSubspace( <V> )
+##
+##  <#GAPDoc Label="TrivialSubspace">
+##  <ManSection>
+##  <Attr Name="TrivialSubspace" Arg='V'/>
+##
+##  <Description>
+##  For a vector space <A>V</A>, <Ref Attr="TrivialSubspace"/> returns the
+##  subspace of <A>V</A> that consists of the zero vector in <A>V</A>.
+##  <Example><![CDATA[
+##  gap> V:= GF(3)^3;;
+##  gap> triv:= TrivialSubspace( V );
+##  <vector space over GF(3), with 0 generators>
+##  gap> AsSet( triv );
+##  [ [ 0*Z(3), 0*Z(3), 0*Z(3) ] ]
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonymAttr( "TrivialSubspace", TrivialSubmodule );
+
+
+#############################################################################
+##
+#F  VectorSpace( <F>, <gens>[, <zero>][, "basis"] )
+##
+##  <#GAPDoc Label="VectorSpace">
+##  <ManSection>
+##  <Func Name="VectorSpace" Arg='F, gens[, zero][, "basis"]'/>
+##
+##  <Description>
+##  For a field <A>F</A> and a collection <A>gens</A> of vectors,
+##  <Ref Func="VectorSpace"/> returns the <A>F</A>-vector space spanned by
+##  the elements in <A>gens</A>.
+##  <P/>
+##  The optional argument <A>zero</A> can be used to specify the zero element
+##  of the space; <A>zero</A> <E>must</E> be given if <A>gens</A> is empty.
+##  The optional string <C>"basis"</C> indicates that <A>gens</A> is known to
+##  be linearly independent over <A>F</A>, in particular the dimension of the
+##  vector space is immediately set;
+##  note that <Ref Func="Basis"/> need <E>not</E> return the basis formed by
+##  <A>gens</A> if the string <C>"basis"</C> is given as an argument.
+##  <!-- crossref. to <C>FreeLeftModule</C> as soon as the modules chapter
+##       is reliable!-->
+##  <Example><![CDATA[
+##  gap> V:= VectorSpace( Rationals, [ [ 1, 2, 3 ], [ 1, 1, 1 ] ] );
+##  <vector space over Rationals, with 2 generators>
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareGlobalFunction( "VectorSpace" );
+
+
+#############################################################################
+##
+#F  Subspace( <V>, <gens>[, "basis"] )  . subspace of <V> generated by <gens>
+#F  SubspaceNC( <V>, <gens>[, "basis"] )
+##
+##  <#GAPDoc Label="Subspace">
+##  <ManSection>
+##  <Func Name="Subspace" Arg='V, gens[, "basis"]'/>
+##  <Func Name="SubspaceNC" Arg='V, gens[, "basis"]'/>
+##
+##  <Description>
+##  For an <M>F</M>-vector space <A>V</A> and a list or collection
+##  <A>gens</A> that is a subset of <A>V</A>,
+##  <Ref Func="Subspace"/> returns the <M>F</M>-vector space spanned by
+##  <A>gens</A>; if <A>gens</A> is empty then the trivial subspace
+##  (see&nbsp;<Ref Func="TrivialSubspace"/>) of <A>V</A> is returned.
+##  The parent (see&nbsp;<Ref Sect="Parents"/>) of the returned vector space
+##  is set to <A>V</A>.
+##  <P/>
+##  <Ref Func="SubspaceNC"/> does the same as <Ref Func="Subspace"/>,
+##  except that it omits the check whether <A>gens</A> is a subset of
+##  <A>V</A>.
+##  <P/>
+##  The optional string <A>"basis"</A> indicates that <A>gens</A> is known to
+##  be linearly independent over <M>F</M>.
+##  In this case the dimension of the subspace is immediately set,
+##  and both <Ref Func="Subspace"/> and <Ref Func="SubspaceNC"/> do
+##  <E>not</E> check whether <A>gens</A> really is linearly independent and
+##  whether <A>gens</A> is a subset of <A>V</A>.
+##  <!-- crossref. to <C>Submodule</C> as soon as the modules chapter
+##       is reliable!-->
+##  <Example><![CDATA[
+##  gap> V:= VectorSpace( Rationals, [ [ 1, 2, 3 ], [ 1, 1, 1 ] ] );;
+##  gap> W:= Subspace( V, [ [ 0, 1, 2 ] ] );
+##  <vector space over Rationals, with 1 generators>
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonym( "Subspace", Submodule );
+
+DeclareSynonym( "SubspaceNC", SubmoduleNC );
+
+
+#############################################################################
+##
+#O  AsVectorSpace( <F>, <D> ) . . . . . . . . .  view <D> as <F>-vector space
+##
+##  <#GAPDoc Label="AsVectorSpace">
+##  <ManSection>
+##  <Oper Name="AsVectorSpace" Arg='F, D'/>
+##
+##  <Description>
+##  Let <A>F</A> be a division ring and <A>D</A> a domain.
+##  If the elements in <A>D</A> form an <A>F</A>-vector space then
+##  <Ref Oper="AsVectorSpace"/> returns this <A>F</A>-vector space,
+##  otherwise <K>fail</K> is returned.
+##  <P/>
+##  <Ref Oper="AsVectorSpace"/> can be used for example to view a given
+##  vector space as a vector space over a smaller or larger division ring.
+##  <Example><![CDATA[
+##  gap> V:= FullRowSpace( GF( 27 ), 3 );
+##  ( GF(3^3)^3 )
+##  gap> Dimension( V );  LeftActingDomain( V );
+##  3
+##  GF(3^3)
+##  gap> W:= AsVectorSpace( GF( 3 ), V );
+##  <vector space over GF(3), with 9 generators>
+##  gap> Dimension( W );  LeftActingDomain( W );
+##  9
+##  GF(3)
+##  gap> AsVectorSpace( GF( 9 ), V );
+##  fail
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonym( "AsVectorSpace", AsLeftModule );
+
+
+#############################################################################
+##
+#O  AsSubspace( <V>, <U> )  . . . . . . . . . . . view <U> as subspace of <V>
+##
+##  <#GAPDoc Label="AsSubspace">
+##  <ManSection>
+##  <Oper Name="AsSubspace" Arg='V, U'/>
+##
+##  <Description>
+##  Let <A>V</A> be an <M>F</M>-vector space, and <A>U</A> a collection.
+##  If <A>U</A> is a subset of <A>V</A> such that the elements of <A>U</A>
+##  form an <M>F</M>-vector space then <Ref Oper="AsSubspace"/> returns this
+##  vector space, with parent set to <A>V</A>
+##  (see&nbsp;<Ref Func="AsVectorSpace"/>).
+##  Otherwise <K>fail</K> is returned.
+##  <Example><![CDATA[
+##  gap> V:= VectorSpace( Rationals, [ [ 1, 2, 3 ], [ 1, 1, 1 ] ] );;
+##  gap> W:= VectorSpace( Rationals, [ [ 1/2, 1/2, 1/2 ] ] );;
+##  gap> U:= AsSubspace( V, W );
+##  <vector space over Rationals, with 1 generators>
+##  gap> Parent( U ) = V;
+##  true
+##  gap> AsSubspace( V, [ [ 1, 1, 1 ] ] );
+##  fail
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareOperation( "AsSubspace", [ IsVectorSpace, IsCollection ] );
+
+
+#############################################################################
+##
+#F  Intersection2Spaces( <AsStruct>, <Substruct>, <Struct> )
+##
+##  <ManSection>
+##  <Func Name="Intersection2Spaces" Arg='AsStruct, Substruct, Struct'/>
+##
+##  <Description>
+##  is a function that takes two arguments <A>V</A> and <A>W</A> which must
+##  be finite dimensional vector spaces,
+##  and returns the intersection of <A>V</A> and <A>W</A>.
+##  <P/>
+##  If the left acting domains are different then let <M>F</M> be their
+##  intersection.
+##  The intersection of <A>V</A> and <A>W</A> is computed as intersection of
+##  <C><A>AsStruct</A>( <A>F</A>, <A>V</A> )</C> and
+##  <C><A>AsStruct</A>( <A>F</A>, <A>V</A> )</C>.
+##  <P/>
+##  If the left acting domains are equal to <M>F</M> then the intersection of
+##  <A>V</A> and <A>W</A> is returned either as <M>F</M>-<A>Substruct</A>
+##  with the common parent of <A>V</A> and <A>W</A> or as
+##  <M>F</M>-<A>Struct</A>, in both cases with known basis.
+##  <P/>
+##  This function is used to handle the intersections of two vector spaces,
+##  two algebras, two algebras-with-one, two left ideals, two right ideals,
+##  two two-sided ideals.
+##  </Description>
+##  </ManSection>
+##
+DeclareGlobalFunction( "Intersection2Spaces" );
+
+
+#############################################################################
+##
+#F  FullRowSpace( <F>, <n> )
+##
+##  <#GAPDoc Label="FullRowSpace">
+##  <ManSection>
+##  <Func Name="FullRowSpace" Arg='F, n'/>
+##  <Meth Name="\^" Arg='F, n' Label="for a field and an integer"/>
+##
+##  <Description>
+##  For a field <A>F</A> and a nonnegative integer <A>n</A>,
+##  <Ref Func="FullRowSpace"/> returns the <A>F</A>-vector space that
+##  consists of all row vectors (see&nbsp;<Ref Func="IsRowVector"/>) of
+##  length <A>n</A> with entries in <A>F</A>.
+##  <P/>
+##  An alternative to construct this vector space is via
+##  <A>F</A><C>^</C><A>n</A>.
+##  <Example><![CDATA[
+##  gap> FullRowSpace( GF( 9 ), 3 );
+##  ( GF(3^2)^3 )
+##  gap> GF(9)^3;           # the same as above
+##  ( GF(3^2)^3 )
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonym( "FullRowSpace", FullRowModule );
+DeclareSynonym( "RowSpace", FullRowModule );
+
+
+#############################################################################
+##
+#F  FullMatrixSpace( <F>, <m>, <n> )
+##
+##  <#GAPDoc Label="FullMatrixSpace">
+##  <ManSection>
+##  <Func Name="FullMatrixSpace" Arg='F, m, n'/>
+##  <Meth Name="\^" Arg='F, dims'
+##   Label="for a field and a pair of integers"/>
+##
+##  <Description>
+##  For a field <A>F</A> and two positive integers <A>m</A> and <A>n</A>,
+##  <Ref Func="FullMatrixSpace"/> returns the <A>F</A>-vector space that
+##  consists of all <A>m</A> by <A>n</A> matrices
+##  (see&nbsp;<Ref Func="IsMatrix"/>) with entries in <A>F</A>.
+##  <P/>
+##  If <A>m</A><C> = </C><A>n</A> then the result is in fact an algebra
+##  (see&nbsp;<Ref Func="FullMatrixAlgebra"/>).
+##  <P/>
+##  An alternative to construct this vector space is via
+##  <A>F</A><C>^[</C><A>m</A>,<A>n</A><C>]</C>.
+##  <Example><![CDATA[
+##  gap> FullMatrixSpace( GF(2), 4, 5 );
+##  ( GF(2)^[ 4, 5 ] )
+##  gap> GF(2)^[ 4, 5 ];    # the same as above
+##  ( GF(2)^[ 4, 5 ] )
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareSynonym( "FullMatrixSpace", FullMatrixModule );
+DeclareSynonym( "MatrixSpace", FullMatrixModule );
+DeclareSynonym( "MatSpace", FullMatrixModule );
+
+
+#############################################################################
+##
+#C  IsSubspacesVectorSpace( <D> )
+##
+##  <#GAPDoc Label="IsSubspacesVectorSpace">
+##  <ManSection>
+##  <Filt Name="IsSubspacesVectorSpace" Arg='D' Type='Category'/>
+##
+##  <Description>
+##  The domain of all subspaces of a (finite) vector space or of all
+##  subspaces of fixed dimension, as returned by <Ref Func="Subspaces"/>
+##  (see&nbsp;<Ref Func="Subspaces"/>) lies in the category
+##  <Ref Filt="IsSubspacesVectorSpace"/>.
+##  <Example><![CDATA[
+##  gap> D:= Subspaces( GF(3)^3 );
+##  Subspaces( ( GF(3)^3 ) )
+##  gap> Size( D );
+##  28
+##  gap> iter:= Iterator( D );;
+##  gap> NextIterator( iter );
+##  <vector space over GF(3), with 0 generators>
+##  gap> NextIterator( iter );
+##  <vector space of dimension 1 over GF(3)>
+##  gap> IsSubspacesVectorSpace( D );
+##  true
+##  ]]></Example>
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareCategory( "IsSubspacesVectorSpace", IsDomain );
+
+
+#############################################################################
+##
+#M  IsFinite( <D> ) . . . . . . . . . . . . . . . . .  for a subspaces domain
+##
+##  Returns `true' if <D> is finite.
+##  We allow subspaces domains in `IsSubspacesVectorSpace' only for finite
+##  vector spaces.
+##
+InstallTrueMethod( IsFinite, IsSubspacesVectorSpace );
+
+
+#############################################################################
+##
+#A  Subspaces( <V>[, <k>] )
+##
+##  <#GAPDoc Label="Subspaces">
+##  <ManSection>
+##  <Attr Name="Subspaces" Arg='V[, k]'/>
+##
+##  <Description>
+##  Called with a finite vector space <A>v</A>,
+##  <Ref Oper="Subspaces"/> returns the domain of all subspaces of <A>V</A>.
+##  <P/>
+##  Called with <A>V</A> and a nonnegative integer <A>k</A>,
+##  <Ref Oper="Subspaces"/> returns the domain of all <A>k</A>-dimensional
+##  subspaces of <A>V</A>.
+##  <P/>
+##  Special <Ref Attr="Size"/> and <Ref Oper="Iterator"/> methods are
+##  provided for these domains.
+##  <!-- <C>Enumerator</C> would also be good ...
+##       (special treatment for full row spaces,
+##       other spaces delegate to this)-->
+##  </Description>
+##  </ManSection>
+##  <#/GAPDoc>
+##
+DeclareAttribute( "Subspaces", IsLeftModule );
+DeclareOperation( "Subspaces", [ IsLeftModule, IsInt ] );
+
+
+#############################################################################
+##
+#F  IsSubspace( <V>, <U> )
+##
+##  <ManSection>
+##  <Func Name="IsSubspace" Arg='V, U'/>
+##
+##  <Description>
+##  check that <A>U</A> is a vector space that is contained in <A>V</A>
+##  <!-- Must also <A>V</A> be a vector space?
+##       If yes then must <A>V</A> and <A>U</A> have same left acting domain?
+##       (Is this function useful at all?) -->
+##  </Description>
+##  </ManSection>
+##
+DeclareGlobalFunction( "IsSubspace" );
+
+
+#############################################################################
+##
+#A  OrthogonalSpaceInFullRowSpace( <U> )
+##
+##  <ManSection>
+##  <Attr Name="OrthogonalSpaceInFullRowSpace" Arg='U'/>
+##
+##  <Description>
+##  For a Gaussian row space <A>U</A> over <M>F</M>,
+##  <Ref Attr="OrthogonalSpaceInFullRowSpace"/>
+##  returns a complement of <A>U</A> in the full row space of same vector
+##  dimension as <A>U</A> over <M>F</M>.
+##  </Description>
+##  </ManSection>
+##
+DeclareAttribute( "OrthogonalSpaceInFullRowSpace", IsGaussianSpace );
+
+
+#############################################################################
+##
+#P  IsVectorSpaceHomomorphism( <map> )
+##
+##  <ManSection>
+##  <Prop Name="IsVectorSpaceHomomorphism" Arg='map'/>
+##
+##  <Description>
+##  A mapping <M>f</M> is a vector space homomorphism (or linear mapping)
+##  if the source and range are vector spaces
+##  (see&nbsp;<Ref Func="IsVectorSpace"/>)
+##  over the same division ring <M>D</M>
+##  (see&nbsp;<Ref Func="LeftActingDomain"/>),
+##  and if <M>f( a + b ) = f(a) + f(b)</M> and <M>f( s * a ) = s * f(a)</M>
+##  hold for all elements <M>a</M>, <M>b</M> in the source of <M>f</M> and
+##  <M>s \in D</M>.
+##  </Description>
+##  </ManSection>
+##
+DeclareProperty( "IsVectorSpaceHomomorphism", IsGeneralMapping );
+
+
+#############################################################################
+##
+#E
+
diff --git a/samples/GAP/vspc.gi b/samples/GAP/vspc.gi
new file mode 100644
index 00000000..b7a88871
--- /dev/null
+++ b/samples/GAP/vspc.gi
@@ -0,0 +1,651 @@
+#############################################################################
+##
+#W  vspc.gi                     GAP library                     Thomas Breuer
+##
+##
+#Y  Copyright (C)  1997,  Lehrstuhl D für Mathematik,  RWTH Aachen,  Germany
+#Y  (C) 1998 School Math and Comp. Sci., University of St Andrews, Scotland
+#Y  Copyright (C) 2002 The GAP Group
+##
+##  This file contains generic methods for vector spaces.
+##
+
+
+#############################################################################
+##
+#M  SetLeftActingDomain( <extL>, <D> )
+##
+##  check whether the left acting domain <D> of the external left set <extL>
+##  knows that it is a division ring.
+##  This is used, e.g.,  to tell a free module over a division ring
+##  that it is a vector space.
+##
+InstallOtherMethod( SetLeftActingDomain,
+    "method to set also 'IsLeftActedOnByDivisionRing'",
+    [ IsAttributeStoringRep and IsLeftActedOnByRing, IsObject ],0,
+    function( extL, D )
+    if HasIsDivisionRing( D ) and IsDivisionRing( D ) then
+      SetIsLeftActedOnByDivisionRing( extL, true );
+    fi;
+    TryNextMethod();
+    end );
+
+
+#############################################################################
+##
+#M  IsLeftActedOnByDivisionRing( <M> )
+##
+InstallMethod( IsLeftActedOnByDivisionRing,
+    "method for external left set that is left acted on by a ring",
+    [ IsExtLSet and IsLeftActedOnByRing ],
+    function( M )
+    if IsIdenticalObj( M, LeftActingDomain( M ) ) then
+      TryNextMethod();
+    else
+      return IsDivisionRing( LeftActingDomain( M ) );
+    fi;
+    end );
+
+
+#############################################################################
+##
+#F  VectorSpace( <F>, <gens>[, <zero>][, "basis"] )
+##
+##  The only difference between `VectorSpace' and `FreeLeftModule' shall be
+##  that the left acting domain of a vector space must be a division ring.
+##
+InstallGlobalFunction( VectorSpace, function( arg )
+    if Length( arg ) = 0 or not IsDivisionRing( arg[1] ) then
+      Error( "usage: VectorSpace( <F>, <gens>[, <zero>][, \"basis\"] )" );
+    fi;
+    return CallFuncList( FreeLeftModule, arg );
+    end );
+
+
+#############################################################################
+##
+#M  AsSubspace( <V>, <C> )  . . . . . . . for a vector space and a collection
+##
+InstallMethod( AsSubspace,
+    "for a vector space and a collection",
+    [ IsVectorSpace, IsCollection ],
+    function( V, C )
+    local newC;
+
+    if not IsSubset( V, C ) then
+      return fail;
+    fi;
+    newC:= AsVectorSpace( LeftActingDomain( V ), C );
+    if newC = fail then
+      return fail;
+    fi;
+    SetParent( newC, V );
+    UseIsomorphismRelation( C, newC );
+    UseSubsetRelation( C, newC );
+
+    return newC;
+    end );
+
+
+#############################################################################
+##
+#M  AsLeftModule( <F>, <V> )  . . . . . .  for division ring and vector space
+##
+##  View the vector space <V> as a vector space over the division ring <F>.
+##
+InstallMethod( AsLeftModule,
+    "method for a division ring and a vector space",
+    [ IsDivisionRing, IsVectorSpace ],
+    function( F, V )
+
+    local W,        # the space, result
+          base,     # basis vectors of field extension
+          gen,      # loop over generators of 'V'
+          b,        # loop over 'base'
+          gens,     # generators of 'V'
+          newgens;  # extended list of generators
+
+    if Characteristic( F ) <> Characteristic( LeftActingDomain( V ) ) then
+
+      # This is impossible.
+      return fail;
+
+    elif F = LeftActingDomain( V ) then
+
+      # No change of the left acting domain is necessary.
+      return V;
+
+    elif IsSubset( F, LeftActingDomain( V ) ) then
+
+      # Check whether 'V' is really a space over the bigger field,
+      # that is, whether the set of elements does not change.
+      base:= BasisVectors( Basis( AsField( LeftActingDomain( V ), F ) ) );
+      for gen in GeneratorsOfLeftModule( V ) do
+        for b in base do
+          if not b * gen in V then
+
+            # The field extension would change the set of elements.
+            return fail;
+
+          fi;
+        od;
+      od;
+
+      # Construct the space.
+      W:= LeftModuleByGenerators( F, GeneratorsOfLeftModule(V), Zero(V) );
+
+    elif IsSubset( LeftActingDomain( V ), F ) then
+
+      # View 'V' as a space over a smaller field.
+      # For that, the list of generators must be extended.
+      gens:= GeneratorsOfLeftModule( V );
+      if IsEmpty( gens ) then
+        W:= LeftModuleByGenerators( F, [], Zero( V ) );
+      else
+
+        base:= BasisVectors( Basis( AsField( F, LeftActingDomain( V ) ) ) );
+        newgens:= [];
+        for b in base do
+          for gen in gens do
+            Add( newgens, b * gen );
+          od;
+        od;
+        W:= LeftModuleByGenerators( F, newgens );
+
+      fi;
+
+    else
+
+      # View 'V' first as space over the intersection of fields,
+      # and then over the desired field.
+      return AsLeftModule( F,
+                 AsLeftModule( Intersection( F,
+                     LeftActingDomain( V ) ), V ) );
+
+    fi;
+
+    UseIsomorphismRelation( V, W );
+    UseSubsetRelation( V, W );
+    return W;
+    end );
+
+
+#############################################################################
+##
+#M  ViewObj( <V> )  . . . . . . . . . . . . . . . . . . . view a vector space
+##
+##  print left acting domain, if known also dimension or no. of generators
+##
+InstallMethod( ViewObj,
+    "for vector space with known generators",
+    [ IsVectorSpace and HasGeneratorsOfLeftModule ],
+    function( V )
+    Print( "<vector space over ", LeftActingDomain( V ), ", with ",
+           Length( GeneratorsOfLeftModule( V ) ), " generators>" );
+    end );
+
+InstallMethod( ViewObj,
+    "for vector space with known dimension",
+    [ IsVectorSpace and HasDimension ],
+    1, # override method for known generators
+    function( V )
+    Print( "<vector space of dimension ", Dimension( V ),
+           " over ", LeftActingDomain( V ), ">" );
+    end );
+
+InstallMethod( ViewObj,
+    "for vector space",
+    [ IsVectorSpace ],
+    function( V )
+    Print( "<vector space over ", LeftActingDomain( V ), ">" );
+    end );
+
+
+#############################################################################
+##
+#M  PrintObj( <V> ) . . . . . . . . . . . . . . . . . . .  for a vector space
+##
+InstallMethod( PrintObj,
+    "method for vector space with left module generators",
+    [ IsVectorSpace and HasGeneratorsOfLeftModule ],
+    function( V )
+    Print( "VectorSpace( ", LeftActingDomain( V ), ", ",
+           GeneratorsOfLeftModule( V ) );
+    if IsEmpty( GeneratorsOfLeftModule( V ) ) and HasZero( V ) then
+      Print( ", ", Zero( V ), " )" );
+    else
+      Print( " )" );
+    fi;
+    end );
+
+InstallMethod( PrintObj,
+    "method for vector space",
+    [ IsVectorSpace ],
+    function( V )
+    Print( "VectorSpace( ", LeftActingDomain( V ), ", ... )" );
+    end );
+
+
+#############################################################################
+##
+#M  \/( <V>, <W> )  . . . . . . . . .  factor of a vector space by a subspace
+#M  \/( <V>, <vectors> )  . . . . . .  factor of a vector space by a subspace
+##
+InstallOtherMethod( \/,
+    "method for vector space and collection",
+    IsIdenticalObj,
+    [ IsVectorSpace, IsCollection ],
+    function( V, vectors )
+    if IsVectorSpace( vectors ) then
+      TryNextMethod();
+    else
+      return V / Subspace( V, vectors );
+    fi;
+    end );
+
+InstallOtherMethod( \/,
+    "generic method for two vector spaces",
+    IsIdenticalObj,
+    [ IsVectorSpace, IsVectorSpace ],
+    function( V, W )
+    return ImagesSource( NaturalHomomorphismBySubspace( V, W ) );
+    end );
+
+
+#############################################################################
+##
+#M  Intersection2Spaces( <AsStruct>, <Substruct>, <Struct> )
+##
+InstallGlobalFunction( Intersection2Spaces,
+    function( AsStructure, Substructure, Structure )
+    return function( V, W )
+    local inters,  # intersection, result
+          F,       # coefficients field
+          gensV,   # list of generators of 'V'
+          gensW,   # list of generators of 'W'
+          VW,      # sum of 'V' and 'W'
+          B;       # basis of 'VW'
+
+    if LeftActingDomain( V ) <> LeftActingDomain( W ) then
+
+      # Compute the intersection as vector space over the intersection
+      # of the coefficients fields.
+      # (Note that the characteristic is the same.)
+      F:= Intersection2( LeftActingDomain( V ), LeftActingDomain( W ) );
+      return Intersection2( AsStructure( F, V ), AsStructure( F, W ) );
+
+    elif IsFiniteDimensional( V ) and IsFiniteDimensional( W ) then
+
+      # Compute the intersection of two spaces over the same field.
+      gensV:= GeneratorsOfLeftModule( V );
+      gensW:= GeneratorsOfLeftModule( W );
+      if   IsEmpty( gensV ) then
+        if Zero( V ) in W then
+          inters:= V;
+        else
+          inters:= [];
+        fi;
+      elif IsEmpty( gensW ) then
+        if Zero( V ) in W then
+          inters:= W;
+        else
+          inters:= [];
+        fi;
+      else
+        # Compute a common coefficient space.
+        VW:= LeftModuleByGenerators( LeftActingDomain( V ),
+                                     Concatenation( gensV, gensW ) );
+        B:= Basis( VW );
+
+        # Construct the coefficient subspaces corresponding to 'V' and 'W'.
+        gensV:= List( gensV, x -> Coefficients( B, x ) );
+        gensW:= List( gensW, x -> Coefficients( B, x ) );
+
+        # Construct the intersection of row spaces, and carry back to VW.
+        inters:= List( SumIntersectionMat( gensV, gensW )[2],
+                       x -> LinearCombination( B, x ) );
+
+        # Construct the intersection space, if possible with a parent.
+        if     HasParent( V ) and HasParent( W )
+           and IsIdenticalObj( Parent( V ), Parent( W ) ) then
+          inters:= Substructure( Parent( V ), inters, "basis" );
+        elif IsEmpty( inters ) then
+          inters:= Substructure( V, inters, "basis" );
+          SetIsTrivial( inters, true );
+        else
+          inters:= Structure( LeftActingDomain( V ), inters, "basis" );
+        fi;
+
+        # Run implications by the subset relation.
+        UseSubsetRelation( V, inters );
+        UseSubsetRelation( W, inters );
+      fi;
+
+      # Return the result.
+      return inters;
+
+    else
+      TryNextMethod();
+    fi;
+    end;
+end );
+
+
+#############################################################################
+##
+#M  Intersection2( <V>, <W> ) . . . . . . . . . . . . . for two vector spaces
+##
+InstallMethod( Intersection2,
+    "method for two vector spaces",
+    IsIdenticalObj,
+    [ IsVectorSpace, IsVectorSpace ],
+    Intersection2Spaces( AsLeftModule, SubspaceNC, VectorSpace ) );
+
+
+#############################################################################
+##
+#M  ClosureLeftModule( <V>, <a> ) . . . . . . . . . closure of a vector space
+##
+InstallMethod( ClosureLeftModule,
+    "method for a vector space with basis, and a vector",
+    IsCollsElms,
+    [ IsVectorSpace and HasBasis, IsVector ],
+    function( V, w )
+    local   B; # basis of 'V'
+
+    # We can test membership easily.
+    B:= Basis( V );
+#T why easily?
+    if Coefficients( B, w ) = fail then
+
+      # In the case of a vector space, we know a basis of the closure.
+      B:= Concatenation( BasisVectors( B ), [ w ] );
+      V:= LeftModuleByGenerators( LeftActingDomain( V ), B );
+      UseBasis( V, B );
+
+    fi;
+    return V;
+    end );
+
+
+#############################################################################
+##
+##  Methods for collections of subspaces of a vector space
+##
+
+
+#############################################################################
+##
+#R  IsSubspacesVectorSpaceDefaultRep( <D> )
+##
+##  is the representation of domains of subspaces of a vector space <V>,
+##  with the components 'structure' (with value <V>) and 'dimension'
+##  (with value either the dimension of the subspaces in the domain
+##  or the string '\"all\"', which means that the domain contains all
+##  subspaces of <V>).
+##
+DeclareRepresentation(
+    "IsSubspacesVectorSpaceDefaultRep",
+    IsComponentObjectRep,
+    [ "dimension", "structure" ] );
+#T not IsAttributeStoringRep?
+
+
+#############################################################################
+##
+#M  PrintObj( <D> )  . . . . . . . . . . . . . . . . . for a subspaces domain
+##
+InstallMethod( PrintObj,
+    "method for a subspaces domain",
+    [ IsSubspacesVectorSpace and IsSubspacesVectorSpaceDefaultRep ],
+    function( D )
+    if IsInt( D!.dimension ) then
+      Print( "Subspaces( ", D!.structure, ", ", D!.dimension, " )" );
+    else
+      Print( "Subspaces( ", D!.structure, " )" );
+    fi;
+    end );
+
+
+#############################################################################
+##
+#M  Size( <D> ) . . . . . . . . . . . . . . . . . . .  for a subspaces domain
+##
+##  The number of $k$-dimensional subspaces in a $n$-dimensional space over
+##  the field with $q$ elements is
+##  $$
+##  a(n,k) = \prod_{i=0}^{k-1} \frac{q^n-q^i}{q^k-q^i} =
+##           \prod_{i=0}^{k-1} \frac{q^{n-i}-1}{q^{k-i}-1}.
+##  $$
+##  We have the recursion
+##  $$
+##  a(n,k+1) = a(n,k) \frac{q^{n-i}-1}{q^{i+1}-1}.
+##  $$
+##
+##  (The number of all subspaces is $\sum_{k=0}^n a(n,k)$.)
+##
+InstallMethod( Size,
+    "method for a subspaces domain",
+    [ IsSubspacesVectorSpace and IsSubspacesVectorSpaceDefaultRep ],
+    function( D )
+
+    local k,
+          n,
+          q,
+          size,
+          qn,
+          qd,
+          ank,
+          i;
+
+    if D!.dimension = "all" then
+
+      # all subspaces of the space
+      n:= Dimension( D!.structure );
+
+      q:= Size( LeftActingDomain( D!.structure ) );
+      size:= 1;
+      qn:= q^n;
+      qd:= q;
+
+      # $a(n,0)$
+      ank:= 1;
+
+      for k in [ 1 .. Int( (n-1)/2 ) ] do
+
+        # Compute $a(n,k)$.
+        ank:= ank * ( qn - 1 ) / ( qd - 1 );
+        qn:= qn / q;
+        qd:= qd * q;
+
+        size:= size + ank;
+
+      od;
+
+      size:= 2 * size;
+
+      if n mod 2 = 0 then
+
+        # Add the number of spaces of dimension $n/2$.
+        size:= size + ank * ( qn - 1 ) / ( qd - 1 );
+      fi;
+
+    else
+
+      # number of spaces of dimension 'k' only
+      n:= Dimension( D!.structure );
+      if   D!.dimension < 0 or
+           n < D!.dimension then
+        return 0;
+      elif n / 2 < D!.dimension then
+        k:= n - D!.dimension;
+      else
+        k:= D!.dimension;
+      fi;
+
+      q:= Size( LeftActingDomain( D!.structure ) );
+      size:= 1;
+
+      qn:= q^n;
+      qd:= q;
+      for i in [ 1 .. k ] do
+        size:= size * ( qn - 1 ) / ( qd - 1 );
+        qn:= qn / q;
+        qd:= qd * q;
+      od;
+
+    fi;
+
+    # Return the result.
+    return size;
+    end );
+
+
+#############################################################################
+##
+#M  Enumerator( <D> ) . . . . . . . . . . . . . . . .  for a subspaces domain
+##
+##  Use the iterator to compute the elements list.
+#T This is not allowed!
+##
+InstallMethod( Enumerator,
+    "method for a subspaces domain",
+    [ IsSubspacesVectorSpace and IsSubspacesVectorSpaceDefaultRep ],
+    function( D )
+    local iter,    # iterator for 'D'
+          elms;    # elements list, result
+
+    iter:= Iterator( D );
+    elms:= [];
+    while not IsDoneIterator( iter ) do
+      Add( elms, NextIterator( iter ) );
+    od;
+    return elms;
+    end );
+#T necessary?
+
+
+#############################################################################
+##
+#M  Iterator( <D> ) . . . . . . . . . . . . . . . . .  for a subspaces domain
+##
+##  uses the subspaces iterator for full row spaces and the mechanism of
+##  associated row spaces.
+##
+BindGlobal( "IsDoneIterator_Subspaces",
+    iter -> IsDoneIterator( iter!.associatedIterator ) );
+
+BindGlobal( "NextIterator_Subspaces", function( iter )
+    local next;
+    next:= NextIterator( iter!.associatedIterator );
+    next:= List( GeneratorsOfLeftModule( next ),
+                 x -> LinearCombination( iter!.basis, x ) );
+    return Subspace( iter!.structure, next, "basis" );
+    end );
+
+BindGlobal( "ShallowCopy_Subspaces",
+    iter -> rec( structure          := iter!.structure,
+                 basis              := iter!.basis,
+                 associatedIterator := ShallowCopy(
+                                           iter!.associatedIterator ) ) );
+
+InstallMethod( Iterator,
+    "for a subspaces domain",
+    [ IsSubspacesVectorSpace and IsSubspacesVectorSpaceDefaultRep ],
+    function( D )
+    local V;      # the vector space
+
+    V:= D!.structure;
+    return IteratorByFunctions( rec(
+               IsDoneIterator     := IsDoneIterator_Subspaces,
+               NextIterator       := NextIterator_Subspaces,
+               ShallowCopy        := ShallowCopy_Subspaces,
+               structure          := V,
+               basis              := Basis( V ),
+               associatedIterator := Iterator(
+                      Subspaces( FullRowSpace( LeftActingDomain( V ),
+                                               Dimension( V ) ),
+                                 D!.dimension ) ) ) );
+    end );
+
+
+#############################################################################
+##
+#M  Subspaces( <V>, <dim> )
+##
+InstallMethod( Subspaces,
+    "for a vector space, and an integer",
+    [ IsVectorSpace, IsInt ],
+    function( V, dim )
+    if IsFinite( V ) then
+      return Objectify( NewType( CollectionsFamily( FamilyObj( V ) ),
+                                     IsSubspacesVectorSpace
+                                 and IsSubspacesVectorSpaceDefaultRep ),
+                        rec(
+                             structure  := V,
+                             dimension  := dim
+                           )
+                      );
+    else
+      TryNextMethod();
+    fi;
+    end );
+
+
+#############################################################################
+##
+#M  Subspaces( <V> )
+##
+InstallMethod( Subspaces,
+    "for a vector space",
+    [ IsVectorSpace ],
+    function( V )
+    if IsFinite( V ) then
+      return Objectify( NewType( CollectionsFamily( FamilyObj( V ) ),
+                                     IsSubspacesVectorSpace
+                                 and IsSubspacesVectorSpaceDefaultRep ),
+                        rec(
+                             structure  := V,
+                             dimension  := "all"
+                           )
+                      );
+    else
+      TryNextMethod();
+    fi;
+    end );
+
+
+#############################################################################
+##
+#F  IsSubspace( <V>, <U> ) . . . . . . . . . . . . . . . . . check <U> <= <V>
+##
+InstallGlobalFunction( IsSubspace, function( V, U )
+    return IsVectorSpace( U ) and IsSubset( V, U );
+end );
+
+
+#############################################################################
+##
+#M  IsVectorSpaceHomomorphism( <map> )
+##
+InstallMethod( IsVectorSpaceHomomorphism,
+    [ IsGeneralMapping ],
+    function( map )
+    local S, R, F;
+    S:= Source( map );
+    if not IsVectorSpace( S ) then
+      return false;
+    fi;
+    R:= Range( map );
+    if not IsVectorSpace( R ) then
+      return false;
+    fi;
+    F:= LeftActingDomain( S );
+    return ( F = LeftActingDomain( R ) ) and IsLinearMapping( F, map );
+    end );
+
+
+#############################################################################
+##
+#E
+
diff --git a/samples/GLSL/SimpleLighting.gl2.frag b/samples/GLSL/SimpleLighting.gl2.frag
new file mode 100644
index 00000000..bb851f86
--- /dev/null
+++ b/samples/GLSL/SimpleLighting.gl2.frag
@@ -0,0 +1,9 @@
+static const char* SimpleFragmentShader = STRINGIFY(
+
+varying vec4 FrontColor;
+
+void main(void)
+{
+    gl_FragColor = FrontColor;
+}
+);
diff --git a/samples/GLSL/recurse1.frag b/samples/GLSL/recurse1.frag
new file mode 100644
index 00000000..66b4c3fe
--- /dev/null
+++ b/samples/GLSL/recurse1.frag
@@ -0,0 +1,48 @@
+#version 330 core
+
+// cross-unit recursion
+
+void main() {}
+
+// two-level recursion
+
+float cbar(int);
+
+void cfoo(float)
+{
+	cbar(2);
+}
+
+// four-level, out of order
+
+void CB();
+void CD();
+void CA() { CB(); }
+void CC() { CD(); }
+
+// high degree
+
+void CBT();
+void CDT();
+void CAT() { CBT(); CBT(); CBT(); }
+void CCT() { CDT(); CDT(); CBT(); }
+
+// not recursive
+
+void norA() {}
+void norB() { norA(); }
+void norC() { norA(); }
+void norD() { norA(); }
+void norE() { norB(); }
+void norF() { norB(); }
+void norG() { norE(); }
+void norH() { norE(); }
+void norI() { norE(); }
+
+// not recursive, but with a call leading into a cycle if ignoring direction
+
+void norcA() { }
+void norcB() { norcA(); }
+void norcC() { norcB(); }
+void norcD() { norcC(); norcB(); } // head of cycle
+void norcE() { norcD(); } // lead into cycle
diff --git a/samples/Game Maker Language/ClientBeginStep.gml b/samples/Game Maker Language/ClientBeginStep.gml
new file mode 100644
index 00000000..64d14110
--- /dev/null
+++ b/samples/Game Maker Language/ClientBeginStep.gml	
@@ -0,0 +1,642 @@
+/*
+    Originally from /Source/gg2/Scripts/Client/ClientBeginStep.gml in Gang Garrison 2
+
+    Copyright (C) 2008-2013 Faucet Software
+    http://www.ganggarrison.com
+
+    This program is free software; 
+    you can redistribute it and/or modify it under the terms of the GNU General Public License
+    as published by the Free Software Foundation; either version 3 of the License, or (at your option)
+    any later version.
+    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
+    without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+    See the GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License along with this program; if not,
+    see <http://www.gnu.org/licenses>.
+
+    Additional permission under GNU GPL version 3 section 7
+    If you modify this Program, or any covered work, by linking or combining it with the Game Maker runtime library, 
+    the 39dll library/extension, Hobbel's Download Manager DLL, or modified versions of these libraries,
+    the licensors of this Program grant you additional permission to convey the resulting work.
+*/
+
+// receive and interpret the server's message(s)
+var i, playerObject, playerID, player, otherPlayerID, otherPlayer, sameVersion, buffer, plugins, pluginsRequired, usePlugins;
+
+if(tcp_eof(global.serverSocket)) {
+    if(gotServerHello)
+        show_message("You have been disconnected from the server.");
+    else
+        show_message("Unable to connect to the server.");
+    instance_destroy();
+    exit;
+}
+
+if(room == DownloadRoom and keyboard_check(vk_escape))
+{
+    instance_destroy();
+    exit;
+}
+
+if(downloadingMap)
+{
+    while(tcp_receive(global.serverSocket, min(1024, downloadMapBytes-buffer_size(downloadMapBuffer))))
+    {
+        write_buffer(downloadMapBuffer, global.serverSocket);
+        if(buffer_size(downloadMapBuffer) == downloadMapBytes)
+        {
+            write_buffer_to_file(downloadMapBuffer, "Maps/" + downloadMapName + ".png");
+            downloadingMap = false;
+            buffer_destroy(downloadMapBuffer);
+            downloadMapBuffer = -1;
+            exit;
+        }
+    }
+    exit;
+}
+
+roomchange = false;
+do {
+    if(tcp_receive(global.serverSocket,1)) {
+        switch(read_ubyte(global.serverSocket)) {
+        case HELLO:
+            gotServerHello = true;
+            global.joinedServerName = receivestring(global.serverSocket, 1);
+            downloadMapName = receivestring(global.serverSocket, 1);
+            advertisedMapMd5 = receivestring(global.serverSocket, 1);
+            receiveCompleteMessage(global.serverSocket, 1, global.tempBuffer);
+            pluginsRequired = read_ubyte(global.tempBuffer);
+            plugins = receivestring(global.serverSocket, 1);
+            if(string_pos("/", downloadMapName) != 0 or string_pos("\", downloadMapName) != 0)
+            {
+                show_message("Server sent illegal map name: "+downloadMapName);
+                instance_destroy();
+                exit;
+            }
+
+            if (!noReloadPlugins && string_length(plugins))
+            {
+                usePlugins = pluginsRequired || !global.serverPluginsPrompt;
+                if (global.serverPluginsPrompt)
+                {
+                    var prompt;
+                    if (pluginsRequired)
+                    {
+                        prompt = show_question(
+                            "This server requires the following plugins to play on it: "
+                            + string_replace_all(plugins, ",", "#")
+                            + '#They are downloaded from the source: "'
+                            + PLUGIN_SOURCE
+                            + '"#The source states: "'
+                            + PLUGIN_SOURCE_NOTICE
+                            + '"#Do you wish to download them and continue connecting?'
+                        );
+                        if (!prompt)
+                        {
+                            instance_destroy();
+                            exit;
+                        }
+                    }
+                    else
+                    {
+                        prompt = show_question(
+                            "This server suggests the following optional plugins to play on it: "
+                            + string_replace_all(plugins, ",", "#")
+                            + '#They are downloaded from the source: "'
+                            + PLUGIN_SOURCE
+                            + '"#The source states: "'
+                            + PLUGIN_SOURCE_NOTICE
+                            + '"#Do you wish to download them and use them?'
+                        );
+                        if (prompt)
+                        {
+                            usePlugins = true;
+                        }
+                    }
+                }
+                if (usePlugins)
+                {
+                    if (!loadserverplugins(plugins))
+                    {
+                        show_message("Error ocurred loading server-sent plugins.");
+                        instance_destroy();
+                        exit;
+                    }
+                    global.serverPluginsInUse = true;
+                }
+            }
+            noReloadPlugins = false;
+            
+            if(advertisedMapMd5 != "")
+            {
+                var download;
+                download = not file_exists("Maps/" + downloadMapName + ".png");
+                if(!download and CustomMapGetMapMD5(downloadMapName) != advertisedMapMd5)
+                {
+                    if(show_question("The server's copy of the map (" + downloadMapName + ") differs from ours.#Would you like to download this server's version of the map?"))
+                        download = true;
+                    else
+                    {
+                        instance_destroy();
+                        exit;
+                    }
+                }
+                
+                if(download)
+                {
+                    write_ubyte(global.serverSocket, DOWNLOAD_MAP);
+                    socket_send(global.serverSocket);
+                    receiveCompleteMessage(global.serverSocket,4,global.tempBuffer);
+                    downloadMapBytes = read_uint(global.tempBuffer);
+                    downloadMapBuffer = buffer_create();
+                    downloadingMap = true;
+                    roomchange=true;
+                }
+            }
+            ClientPlayerJoin(global.serverSocket);
+            if(global.rewardKey != "" and global.rewardId != "")
+            {
+                var rewardId;
+                rewardId = string_copy(global.rewardId, 0, 255);
+                write_ubyte(global.serverSocket, REWARD_REQUEST);
+                write_ubyte(global.serverSocket, string_length(rewardId));
+                write_string(global.serverSocket, rewardId);
+            }
+            if(global.queueJumping == true)
+            {
+                write_ubyte(global.serverSocket, CLIENT_SETTINGS);
+                write_ubyte(global.serverSocket, global.queueJumping);
+            }
+            socket_send(global.serverSocket);
+            break;
+            
+        case JOIN_UPDATE:
+            receiveCompleteMessage(global.serverSocket,2,global.tempBuffer);
+            global.playerID = read_ubyte(global.tempBuffer);
+            global.currentMapArea = read_ubyte(global.tempBuffer);
+            break;
+        
+        case FULL_UPDATE:
+            deserializeState(FULL_UPDATE);
+            break;
+        
+        case QUICK_UPDATE:
+            deserializeState(QUICK_UPDATE);
+            break;
+             
+        case CAPS_UPDATE:
+            deserializeState(CAPS_UPDATE);
+            break;
+                  
+        case INPUTSTATE:
+            deserializeState(INPUTSTATE);
+            break;             
+        
+        case PLAYER_JOIN:
+            player = instance_create(0,0,Player);
+            player.name = receivestring(global.serverSocket, 1);
+                  
+            ds_list_add(global.players, player);
+            if(ds_list_size(global.players)-1 == global.playerID) {
+                global.myself = player;
+                instance_create(0,0,PlayerControl);
+            }
+            break;
+            
+        case PLAYER_LEAVE:
+            // Delete player from the game, adjust own ID accordingly
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            playerID = read_ubyte(global.tempBuffer);
+            player = ds_list_find_value(global.players, playerID);
+            removePlayer(player);
+            if(playerID < global.playerID) {
+                global.playerID -= 1;
+            }
+            break;
+                                   
+        case PLAYER_DEATH:
+            var causeOfDeath, assistantPlayerID, assistantPlayer;
+            receiveCompleteMessage(global.serverSocket,4,global.tempBuffer);
+            playerID = read_ubyte(global.tempBuffer);
+            otherPlayerID = read_ubyte(global.tempBuffer);
+            assistantPlayerID = read_ubyte(global.tempBuffer);
+            causeOfDeath = read_ubyte(global.tempBuffer);
+                  
+            player = ds_list_find_value(global.players, playerID);
+            
+            otherPlayer = noone;
+            if(otherPlayerID != 255)
+                otherPlayer = ds_list_find_value(global.players, otherPlayerID);
+            
+            assistantPlayer = noone;
+            if(assistantPlayerID != 255)
+                assistantPlayer = ds_list_find_value(global.players, assistantPlayerID);
+            
+            doEventPlayerDeath(player, otherPlayer, assistantPlayer, causeOfDeath);
+            break;
+             
+        case BALANCE:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            balanceplayer=read_ubyte(global.tempBuffer);
+            if balanceplayer == 255 {
+                if !instance_exists(Balancer) instance_create(x,y,Balancer);
+                with(Balancer) notice=0;
+            } else {
+                player = ds_list_find_value(global.players, balanceplayer);
+                if(player.object != -1) {
+                    with(player.object) {
+                        instance_destroy();
+                    }
+                    player.object = -1;
+                }
+                if(player.team==TEAM_RED) {
+                    player.team = TEAM_BLUE;
+                } else {
+                    player.team = TEAM_RED;
+                }
+                if !instance_exists(Balancer) instance_create(x,y,Balancer);
+                Balancer.name=player.name;
+                with (Balancer) notice=1;
+            }
+            break;
+                  
+        case PLAYER_CHANGETEAM:
+            receiveCompleteMessage(global.serverSocket,2,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            if(player.object != -1) {
+                with(player.object) {
+                    instance_destroy();
+                }
+                player.object = -1;
+            }
+            player.team = read_ubyte(global.tempBuffer);
+            break;
+             
+        case PLAYER_CHANGECLASS:
+            receiveCompleteMessage(global.serverSocket,2,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            if(player.object != -1) {
+                with(player.object) {
+                    instance_destroy();
+                }
+                player.object = -1;
+            }
+            player.class = read_ubyte(global.tempBuffer);
+            break;             
+        
+        case PLAYER_CHANGENAME:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            player.name = receivestring(global.serverSocket, 1);
+            if player=global.myself {
+                global.playerName=player.name
+            }
+            break;
+                 
+        case PLAYER_SPAWN:
+            receiveCompleteMessage(global.serverSocket,3,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            doEventSpawn(player, read_ubyte(global.tempBuffer), read_ubyte(global.tempBuffer));
+            break;
+              
+        case CHAT_BUBBLE:
+            var bubbleImage;
+            receiveCompleteMessage(global.serverSocket,2,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            setChatBubble(player, read_ubyte(global.tempBuffer));
+            break;
+             
+        case BUILD_SENTRY:
+            receiveCompleteMessage(global.serverSocket,6,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            buildSentry(player, read_ushort(global.tempBuffer)/5, read_ushort(global.tempBuffer)/5, read_byte(global.tempBuffer));
+            break;
+              
+        case DESTROY_SENTRY:
+            receiveCompleteMessage(global.serverSocket,4,global.tempBuffer);
+            playerID = read_ubyte(global.tempBuffer);
+            otherPlayerID = read_ubyte(global.tempBuffer);
+            assistantPlayerID = read_ubyte(global.tempBuffer);
+            causeOfDeath = read_ubyte(global.tempBuffer);
+            
+            player = ds_list_find_value(global.players, playerID);
+            if(otherPlayerID == 255) {
+                doEventDestruction(player, noone, noone, causeOfDeath);
+            } else {
+                otherPlayer = ds_list_find_value(global.players, otherPlayerID);
+                if (assistantPlayerID == 255) {
+                    doEventDestruction(player, otherPlayer, noone, causeOfDeath);
+                } else {
+                    assistantPlayer = ds_list_find_value(global.players, assistantPlayerID);
+                    doEventDestruction(player, otherPlayer, assistantPlayer, causeOfDeath);
+                }
+            }
+            break;
+                      
+        case GRAB_INTEL:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            doEventGrabIntel(player);
+            break;
+      
+        case SCORE_INTEL:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            doEventScoreIntel(player);
+            break;
+      
+        case DROP_INTEL:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            doEventDropIntel(player); 
+            break;
+            
+        case RETURN_INTEL:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            doEventReturnIntel(read_ubyte(global.tempBuffer));
+            break;
+  
+        case GENERATOR_DESTROY:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            team = read_ubyte(global.tempBuffer);
+            doEventGeneratorDestroy(team);
+            break;
+      
+        case UBER_CHARGED:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            doEventUberReady(player);
+            break;
+  
+        case UBER:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            doEventUber(player);
+            break;    
+  
+        case OMNOMNOMNOM:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            if(player.object != -1) {
+                with(player.object) {
+                    omnomnomnom=true;
+                    if(hp < 200)
+                    {
+                        canEat = false;
+                        alarm[6] = eatCooldown; //10 second cooldown
+                    }
+                    if(player.team == TEAM_RED) {
+                        omnomnomnomindex=0;
+                        omnomnomnomend=31;
+                    } else if(player.team==TEAM_BLUE) {
+                        omnomnomnomindex=32;
+                        omnomnomnomend=63;
+                    }
+                    xscale=image_xscale; 
+                } 
+            }
+            break;
+      
+        case TOGGLE_ZOOM:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            if player.object != -1 {
+                toggleZoom(player.object);
+            }
+            break;
+                                         
+        case PASSWORD_REQUEST:
+            if(!usePreviousPwd)
+                global.clientPassword = get_string("Enter Password:", "");
+            write_ubyte(global.serverSocket, string_length(global.clientPassword));
+            write_string(global.serverSocket, global.clientPassword);
+            socket_send(global.serverSocket);
+            break;
+       
+        case PASSWORD_WRONG:                                    
+            show_message("Incorrect Password.");
+            instance_destroy();
+            exit;
+        
+        case INCOMPATIBLE_PROTOCOL:
+            show_message("Incompatible server protocol version.");
+            instance_destroy();
+            exit;
+            
+        case KICK:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            reason = read_ubyte(global.tempBuffer);
+            if reason == KICK_NAME kickReason = "Name Exploit";
+            else if reason == KICK_BAD_PLUGIN_PACKET kickReason = "Invalid plugin packet ID";
+            else if reason == KICK_MULTI_CLIENT kickReason = "There are too many connections from your IP";
+            else kickReason = "";
+            show_message("You have been kicked from the server. "+kickReason+".");
+            instance_destroy();
+            exit;
+              
+        case ARENA_STARTROUND:
+            doEventArenaStartRound();
+            break;
+            
+        case ARENA_ENDROUND:
+            with ArenaHUD clientArenaEndRound();
+            break;   
+        
+        case ARENA_RESTART:
+            doEventArenaRestart();
+            break;
+            
+        case UNLOCKCP:
+            doEventUnlockCP();
+            break;
+                   
+        case MAP_END:
+            global.nextMap=receivestring(global.serverSocket, 1);
+            receiveCompleteMessage(global.serverSocket,2,global.tempBuffer);
+            global.winners=read_ubyte(global.tempBuffer);
+            global.currentMapArea=read_ubyte(global.tempBuffer);
+            global.mapchanging = true;
+            if !instance_exists(ScoreTableController) instance_create(0,0,ScoreTableController);
+            instance_create(0,0,WinBanner);
+            break;
+
+        case CHANGE_MAP:
+            roomchange=true;
+            global.mapchanging = false;
+            global.currentMap = receivestring(global.serverSocket, 1);
+            global.currentMapMD5 = receivestring(global.serverSocket, 1);
+            if(global.currentMapMD5 == "") { // if this is an internal map (signified by the lack of an md5)
+                if(findInternalMapRoom(global.currentMap))
+                    room_goto_fix(findInternalMapRoom(global.currentMap));
+                else
+                {
+                    show_message("Error:#Server went to invalid internal map: " + global.currentMap + "#Exiting.");
+                    instance_destroy();
+                    exit;
+                }
+            } else { // it's an external map
+                if(string_pos("/", global.currentMap) != 0 or string_pos("\", global.currentMap) != 0)
+                {
+                    show_message("Server sent illegal map name: "+global.currentMap);
+                    instance_destroy();
+                    exit;
+                }
+                if(!file_exists("Maps/" + global.currentMap + ".png") or CustomMapGetMapMD5(global.currentMap) != global.currentMapMD5)
+                {   // Reconnect to the server to download the map
+                    var oldReturnRoom;
+                    oldReturnRoom = returnRoom;
+                    returnRoom = DownloadRoom;
+                    if (global.serverPluginsInUse)
+                        noUnloadPlugins = true;
+                    event_perform(ev_destroy,0);
+                    ClientCreate();
+                    if (global.serverPluginsInUse)
+                        noReloadPlugins = true;
+                    returnRoom = oldReturnRoom;
+                    usePreviousPwd = true;
+                    exit;
+                }
+                room_goto_fix(CustomMapRoom);
+            }
+                 
+            for(i=0; i<ds_list_size(global.players); i+=1) {
+                player = ds_list_find_value(global.players, i);
+                if global.currentMapArea == 1 { 
+                    player.stats[KILLS] = 0;
+                    player.stats[DEATHS] = 0;
+                    player.stats[CAPS] = 0;
+                    player.stats[ASSISTS] = 0;
+                    player.stats[DESTRUCTION] = 0;
+                    player.stats[STABS] = 0;
+                    player.stats[HEALING] = 0;
+                    player.stats[DEFENSES] = 0;
+                    player.stats[INVULNS] = 0;
+                    player.stats[BONUS] = 0;
+                    player.stats[DOMINATIONS] = 0;
+                    player.stats[REVENGE] = 0;
+                    player.stats[POINTS] = 0;
+                    player.roundStats[KILLS] = 0;
+                    player.roundStats[DEATHS] = 0;
+                    player.roundStats[CAPS] = 0;
+                    player.roundStats[ASSISTS] = 0;
+                    player.roundStats[DESTRUCTION] = 0;
+                    player.roundStats[STABS] = 0;
+                    player.roundStats[HEALING] = 0;
+                    player.roundStats[DEFENSES] = 0;
+                    player.roundStats[INVULNS] = 0;
+                    player.roundStats[BONUS] = 0;
+                    player.roundStats[DOMINATIONS] = 0;
+                    player.roundStats[REVENGE] = 0;
+                    player.roundStats[POINTS] = 0;
+                    player.team = TEAM_SPECTATOR;
+                }
+            }
+            break;
+        
+        case SERVER_FULL:
+            show_message("The server is full.");
+            instance_destroy();
+            exit;
+        
+        case REWARD_CHALLENGE_CODE:
+            var challengeData;
+            receiveCompleteMessage(global.serverSocket,16,global.tempBuffer);
+            challengeData = read_binstring(global.tempBuffer, buffer_size(global.tempBuffer));
+            challengeData += socket_remote_ip(global.serverSocket);
+
+            write_ubyte(global.serverSocket, REWARD_CHALLENGE_RESPONSE);
+            write_binstring(global.serverSocket, hmac_md5_bin(global.rewardKey, challengeData));
+            socket_send(global.serverSocket);
+            break;
+
+        case REWARD_UPDATE:
+            receiveCompleteMessage(global.serverSocket,1,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            var rewardString;
+            rewardString = receivestring(global.serverSocket, 2);
+            doEventUpdateRewards(player, rewardString);
+            break;
+            
+        case MESSAGE_STRING:
+            var message, notice;
+            message = receivestring(global.serverSocket, 1);
+            with NoticeO instance_destroy();
+            notice = instance_create(0, 0, NoticeO);
+            notice.notice = NOTICE_CUSTOM;
+            notice.message = message;
+            break;
+        
+        case SENTRY_POSITION:
+            receiveCompleteMessage(global.serverSocket,5,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            if(player.sentry)
+            {
+                player.sentry.x = read_ushort(global.tempBuffer) / 5;
+                player.sentry.y = read_ushort(global.tempBuffer) / 5;
+                player.sentry.xprevious = player.sentry.x;
+                player.sentry.yprevious = player.sentry.y;
+                player.sentry.vspeed = 0;
+            }
+            break;
+          
+        case WEAPON_FIRE:
+            receiveCompleteMessage(global.serverSocket,9,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            
+            if(player.object)
+            {
+                with(player.object)
+                {
+                    x = read_ushort(global.tempBuffer)/5;
+                    y = read_ushort(global.tempBuffer)/5;
+                    hspeed = read_byte(global.tempBuffer)/8.5;
+                    vspeed = read_byte(global.tempBuffer)/8.5;
+                    xprevious = x;
+                    yprevious = y;
+                }
+                
+                doEventFireWeapon(player, read_ushort(global.tempBuffer));
+            }
+            break;
+
+        case PLUGIN_PACKET:
+            var packetID, packetLen, buf, success;
+
+            // fetch full packet
+            receiveCompleteMessage(global.serverSocket, 2, global.tempBuffer);
+            packetLen = read_ushort(global.tempBuffer);
+            receiveCompleteMessage(global.serverSocket, packetLen, global.tempBuffer);
+
+            packetID = read_ubyte(global.tempBuffer);
+
+            // get packet data
+            buf = buffer_create();
+            write_buffer_part(buf, global.tempBuffer, packetLen - 1);
+
+            // try to enqueue
+            // give "noone" value for client since received from server
+            success = _PluginPacketPush(packetID, buf, noone);
+            
+            // if it returned false, packetID was invalid
+            if (!success)
+            {
+                // clear up buffer
+                buffer_destroy(buf);
+                show_error("ERROR when reading plugin packet: no such plugin packet ID " + string(packetID), true);
+            }
+            break;
+        
+        case CLIENT_SETTINGS:
+            receiveCompleteMessage(global.serverSocket,2,global.tempBuffer);
+            player = ds_list_find_value(global.players, read_ubyte(global.tempBuffer));
+            player.queueJump = read_ubyte(global.tempBuffer);
+            break;
+
+        default:
+            promptRestartOrQuit("The Server sent unexpected data.");
+            exit;
+        }
+    } else {
+        break;
+    }
+} until(roomchange);
diff --git a/samples/Game Maker Language/Create.gml b/samples/Game Maker Language/Create.gml
new file mode 100644
index 00000000..0a034735
--- /dev/null
+++ b/samples/Game Maker Language/Create.gml	
@@ -0,0 +1,141 @@
+/*
+    Originally from /Source/gg2/Objects/Updater.events/Create.xml in Gang Garrison 2
+
+    Copyright (C) 2008-2013 Faucet Software
+    http://www.ganggarrison.com
+
+    This program is free software; 
+    you can redistribute it and/or modify it under the terms of the GNU General Public License
+    as published by the Free Software Foundation; either version 3 of the License, or (at your option)
+    any later version.
+    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
+    without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+    See the GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License along with this program; if not,
+    see <http://www.gnu.org/licenses>.
+
+    Additional permission under GNU GPL version 3 section 7
+    If you modify this Program, or any covered work, by linking or combining it with the Game Maker runtime library, 
+    the 39dll library/extension, Hobbel's Download Manager DLL, or modified versions of these libraries,
+    the licensors of this Program grant you additional permission to convey the resulting work.
+*/
+// Downloading code. 
+
+var downloadHandle, url, tmpfile, window_oldshowborder, window_oldfullscreen;
+timeLeft = 0;
+counter = 0;
+AudioControlPlaySong(-1, false);
+window_oldshowborder = window_get_showborder();
+window_oldfullscreen = window_get_fullscreen();
+window_set_fullscreen(false);
+window_set_showborder(false);
+
+if(global.updaterBetaChannel)
+    url = UPDATE_SOURCE_BETA;
+else
+    url = UPDATE_SOURCE;
+
+tmpfile = temp_directory + "\gg2update.zip";
+    
+downloadHandle = httpGet(url, -1);
+
+while(!httpRequestStatus(downloadHandle)) 
+{ // while download isn't finished
+    sleep(floor(1000/30)); // sleep for the equivalent of one frame
+    io_handle(); // this prevents GameMaker from appearing locked-up
+    httpRequestStep(downloadHandle);
+    
+    // check if the user cancelled the download with the esc key
+    if(keyboard_check(vk_escape)) 
+    {
+        httpRequestDestroy(downloadHandle);
+        window_set_showborder(window_oldshowborder);
+        window_set_fullscreen(window_oldfullscreen);
+        room_goto_fix(Menu);
+        exit;
+    }
+     
+    if(counter == 0 || counter mod 60 == 0)
+        timer = random(359)+1;
+    draw_sprite(UpdaterBackgroundS,0,0,0);
+    draw_set_color(c_white);
+    draw_set_halign(fa_left);
+    draw_set_valign(fa_center);
+    minutes=floor(timer/60);
+    seconds=floor(timer-minutes*60);
+    draw_text(x,y-20,string(minutes) + " minutes " + string(seconds) + " seconds Remaining...");
+    counter+=1;
+    var progress, size;
+    progress = httpRequestResponseBodyProgress(downloadHandle);
+    size = httpRequestResponseBodySize(downloadHandle);
+    if (size != -1)
+    {
+        progressBar = floor((progress/size) * 20);
+        offset = 3;
+        for(i=0;i<progressBar;i+=1){
+            draw_sprite(UpdaterProgressS,0,x+offset,y);
+            offset+=12;
+        }
+    }
+    screen_refresh();
+}
+// Errored
+if (httpRequestStatus(downloadHandle) == 2)
+{
+    show_message("Downloading update failed!#" + httpRequestError(downloadHandle));
+    httpRequestDestroy(downloadHandle);
+    window_set_showborder(window_oldshowborder);
+    window_set_fullscreen(window_oldfullscreen);
+    room_goto_fix(Menu);
+    exit;
+}
+// Request failed
+if (httpRequestStatusCode(downloadHandle) != 200)
+{
+    show_message("Downloading update failed!#" + string(httpRequestStatusCode(downloadHandle)) + " " + httpRequestReasonPhrase(downloadHandle));
+    httpRequestDestroy(downloadHandle);
+    window_set_showborder(window_oldshowborder);
+    window_set_fullscreen(window_oldfullscreen);
+    room_goto_fix(Menu);
+    exit;
+}
+
+write_buffer_to_file(httpRequestResponseBody(downloadHandle), tmpfile);
+httpRequestDestroy(downloadHandle);
+
+if(!file_exists(tmpfile))
+{
+    window_set_showborder(window_oldshowborder);
+    window_set_fullscreen(window_oldfullscreen);
+    show_message("Error updating: Missing gg2update.zip in temp directory, download failed(?)");
+    room_goto_fix(Menu);
+    exit;
+}
+
+// rename existing "Gang Garrison 2.exe" to avoid conflict when extracting
+if (file_exists("Gang Garrison 2.exe"))
+{
+    var newName, n;
+    n = 1;
+    
+    // increment until unused name found
+    do
+    {
+        newName = "gg2-old.delete.me." + string(n);
+        n += 1;
+    }
+    until(!file_exists(newName));
+
+    file_rename("Gang Garrison 2.exe", newName);
+}
+
+
+
+// let's extract the downloaded file now.
+extractzip(tmpfile, working_directory);
+
+// run new version    
+execute_program("Gang Garrison 2.exe", "", false);
+
+// exit
+game_end();
diff --git a/samples/Game Maker Language/Draw.gml b/samples/Game Maker Language/Draw.gml
new file mode 100644
index 00000000..e6d1c3b7
--- /dev/null
+++ b/samples/Game Maker Language/Draw.gml	
@@ -0,0 +1,161 @@
+/*
+    Originally from /Source/gg2/Objects/InGameElements/Character.events/Draw.xml in Gang Garrison 2
+
+    Copyright (C) 2008-2013 Faucet Software
+    http://www.ganggarrison.com
+
+    This program is free software; 
+    you can redistribute it and/or modify it under the terms of the GNU General Public License
+    as published by the Free Software Foundation; either version 3 of the License, or (at your option)
+    any later version.
+    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
+    without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+    See the GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License along with this program; if not,
+    see <http://www.gnu.org/licenses>.
+
+    Additional permission under GNU GPL version 3 section 7
+    If you modify this Program, or any covered work, by linking or combining it with the Game Maker runtime library, 
+    the 39dll library/extension, Hobbel's Download Manager DLL, or modified versions of these libraries,
+    the licensors of this Program grant you additional permission to convey the resulting work.
+*/
+
+xoffset = view_xview[0];
+yoffset = view_yview[0];
+xsize = view_wview[0];
+ysize = view_hview[0];
+
+if (distance_to_point(xoffset+xsize/2,yoffset+ysize/2) > 800)
+    exit;
+
+var xr, yr;
+xr = round(x);
+yr = round(y);
+    
+image_alpha = cloakAlpha;
+
+if (global.myself.team == team and canCloak)
+    image_alpha = cloakAlpha/2 + 0.5;
+
+if (invisible)
+    exit;
+
+if(stabbing)
+    image_alpha -= power(currentWeapon.stab.alpha, 2);
+
+if team == global.myself.team && (player != global.myself || global.showHealthBar == 1){
+    draw_set_alpha(1);
+    draw_healthbar(xr-10, yr-30, xr+10, yr-25,hp*100/maxHp,c_black,c_red,c_green,0,true,true);
+}    
+if(distance_to_point(mouse_x, mouse_y)<25) {
+    if cloak && team!=global.myself.team exit;
+    draw_set_alpha(1);
+    draw_set_halign(fa_center);
+    draw_set_valign(fa_bottom);
+    if(team==TEAM_RED) {
+        draw_set_color(c_red);
+    } else {
+        draw_set_color(c_blue);
+    }
+    draw_text(xr, yr-35, player.name);
+    
+    if(team == global.myself.team && global.showTeammateStats)
+    {
+        if(weapons[0] == Medigun)
+            draw_text(xr,yr+50, "Superburst: " + string(currentWeapon.uberCharge/20) + "%");
+        else if(weapons[0] == Shotgun)
+            draw_text(xr,yr+50, "Nuts 'N' Bolts: " + string(nutsNBolts));
+        else if(weapons[0] == Minegun)
+            draw_text(xr,yr+50, "Lobbed Mines: " + string(currentWeapon.lobbed));
+    }
+}  
+
+draw_set_alpha(1);
+if team == TEAM_RED ubercolour = c_red;
+if team == TEAM_BLUE ubercolour = c_blue;
+
+var sprite, overlaySprite;
+if zoomed
+{
+    if (team == TEAM_RED)
+        sprite = SniperCrouchRedS;
+    else
+        sprite = SniperCrouchBlueS;
+    overlaySprite = sniperCrouchOverlay;
+}
+else
+{
+    sprite = sprite_index;
+    overlaySprite = overlay;
+}
+    
+if (omnomnomnom)
+{
+    draw_sprite_ext_overlay(omnomnomnomSprite,omnomnomnomOverlay,omnomnomnomindex,xr,yr,image_xscale,image_yscale,image_angle,c_white,1);
+    if (ubered)
+        draw_sprite_ext_overlay(omnomnomnomSprite,omnomnomnomOverlay,omnomnomnomindex,xr,yr,image_xscale,image_yscale,image_angle,ubercolour,0.7);
+}
+else if (taunting)
+{
+    draw_sprite_ext_overlay(tauntsprite,tauntOverlay,tauntindex,xr,yr,image_xscale,image_yscale,image_angle,c_white,1);
+    if (ubered)
+        draw_sprite_ext_overlay(tauntsprite,tauntOverlay,tauntindex,xr,yr,image_xscale,image_yscale,image_angle,ubercolour,0.7);
+}
+else if (player.humiliated)
+    draw_sprite_ext(humiliationPoses,floor(animationImage)+humiliationOffset,xr,yr,image_xscale,image_yscale,image_angle,c_white,image_alpha);
+else if (!taunting)
+{
+    if (cloak)
+    {
+        if (!ubered)
+            draw_sprite_ext(sprite,floor(animationImage+animationOffset),xr,yr,image_xscale,image_yscale,image_angle,c_white,image_alpha);
+        else if (ubered)
+        {
+            draw_sprite_ext(sprite,floor(animationImage+animationOffset),xr,yr,image_xscale,image_yscale,image_angle,c_white,1);
+            draw_sprite_ext(sprite,floor(animationImage+animationOffset),xr,yr,image_xscale,image_yscale,image_angle,ubercolour,0.7);
+        }
+    }
+    else
+    {
+        if (!ubered)
+            draw_sprite_ext_overlay(sprite,overlaySprite,floor(animationImage+animationOffset),xr,yr,image_xscale,image_yscale,image_angle,c_white,image_alpha);
+        else if (ubered)
+        {
+            draw_sprite_ext_overlay(sprite,overlaySprite,floor(animationImage+animationOffset),xr,yr,image_xscale,image_yscale,image_angle,c_white,1);
+            draw_sprite_ext_overlay(sprite,overlaySprite,floor(animationImage+animationOffset),xr,yr,image_xscale,image_yscale,image_angle,ubercolour,0.7);
+        }
+    }
+}
+if (burnDuration > 0 or burnIntensity > 0) {
+    for(i = 0; i < numFlames * burnIntensity / maxIntensity; i += 1)
+    {
+        draw_sprite_ext(FlameS, alarm[5] + i + random(2), x + flameArray_x[i], y + flameArray_y[i], 1, 1, 0, c_white, burnDuration / maxDuration * 0.71 + 0.35);
+    }  
+}
+
+// Copied from Lorgan's itemserver "angels" with slight modifications
+// All credit be upon him
+if (demon != -1)
+{
+    demonX = median(x-40,demonX,x+40);
+    demonY = median(y-40,demonY,y);
+    demonOffset += demonDir;
+    if (abs(demonOffset) > 15)
+        demonDir *= -1;
+
+    var dir;
+    if (demonX > x)
+        dir = -1;
+    else
+        dir = 1;
+
+    if (demonFrame > sprite_get_number(demon))
+        demonFrame = 0;
+
+    if (stabbing || ubered)
+        draw_sprite_ext(demon,demonFrame+floor(animationImage)+7*player.team,demonX,demonY+demonOffset,dir*1,1,0,c_white,1);
+    else
+        draw_sprite_ext(demon,demonFrame+floor(animationImage)+7*player.team,demonX,demonY+demonOffset,dir*1,1,0,c_white,image_alpha);
+
+    demonFrame += 1;
+}
diff --git a/samples/Game Maker Language/characterDrawEvent.gml b/samples/Game Maker Language/characterDrawEvent.gml
new file mode 100644
index 00000000..6dcd8fcc
--- /dev/null
+++ b/samples/Game Maker Language/characterDrawEvent.gml	
@@ -0,0 +1,80 @@
+// Originally from /spelunky/Scripts/Platform Engine/characterDrawEvent.gml in the Spelunky Community Update Project
+
+/**********************************************************************************
+    Copyright (c) 2008, 2009 Derek Yu and Mossmouth, LLC
+    
+    This file is part of Spelunky.
+
+    You can redistribute and/or modify Spelunky, including its source code, under
+    the terms of the Spelunky User License.
+
+    Spelunky is distributed in the hope that it will be entertaining and useful,
+    but WITHOUT WARRANTY. Please see the Spelunky User License for more details.
+
+    The Spelunky User License should be available in "Game Information", which
+    can be found in the Resource Explorer, or as an external file called COPYING.
+    If not, please obtain a new copy of Spelunky from <http://spelunkyworld.com/>
+    
+***********************************************************************************/
+
+/*
+This event should be placed in the draw event of the platform character.
+*/
+//draws the sprite
+draw = true;
+if (facing == RIGHT) image_xscale = -1;
+else image_xscale = 1;
+
+if (blinkToggle != 1)
+{
+    if ((state == CLIMBING or (sprite_index == sPExit or sprite_index == sDamselExit or sprite_index == sTunnelExit)) and global.hasJetpack and not whipping)
+    {
+        draw_sprite_ext(sprite_index, -1, x, y, image_xscale, image_yscale, image_angle, image_blend, image_alpha);
+        //draw_sprite(sprite_index,-1,x,y);
+        draw_sprite(sJetpackBack,-1,x,y);
+        draw = false;
+    }
+    else if (global.hasJetpack and facing == RIGHT) draw_sprite(sJetpackRight,-1,x-4,y-1);
+    else if (global.hasJetpack) draw_sprite(sJetpackLeft,-1,x+4,y-1);
+    if (draw)
+    {
+        if (redColor > 0) draw_sprite_ext(sprite_index, -1, x, y, image_xscale, image_yscale, image_angle, make_color_rgb(200 + redColor,0,0), image_alpha);
+        else draw_sprite_ext(sprite_index, -1, x, y, image_xscale, image_yscale, image_angle, image_blend, image_alpha);
+    }
+    if (facing == RIGHT)
+    {
+        if (holdArrow == ARROW_NORM)
+        {
+            draw_sprite(sArrowRight, -1, x+4, y+1);
+        }
+        else if (holdArrow == ARROW_BOMB)
+        {
+            if (holdArrowToggle) draw_sprite(sBombArrowRight, 0, x+4, y+2);
+            else draw_sprite(sBombArrowRight, 1, x+4, y+2);
+        }
+    }
+    else if (facing == LEFT)
+    {
+        if (holdArrow == ARROW_NORM)
+        {
+            draw_sprite(sArrowLeft, -1, x-4, y+1);
+        }
+        else if (holdArrow == ARROW_BOMB)
+        {
+            if (holdArrowToggle) draw_sprite(sBombArrowLeft, 0, x-4, y+2);
+            else draw_sprite(sBombArrowLeft, 1, x-4, y+2);
+        }
+    }
+}
+/*
+if canRun
+{
+  xOffset=80
+  if player=1
+    yOffset=120
+  else
+    yOffset=143
+  //draw the "flySpeed" bar, which shows how much speed the character has acquired while holding the "run" button
+  //draw_healthbar(view_xview[0]+224+xOffset,view_yview[0]+432+yOffset,view_xview[0]+400+xOffset,view_yview[0]+450+yOffset,flySpeed,make_color_rgb(0,64,128),c_blue,c_aqua,0,1,1)
+}
+*/
diff --git a/samples/Game Maker Language/characterStepEvent.gml b/samples/Game Maker Language/characterStepEvent.gml
new file mode 100644
index 00000000..7416df80
--- /dev/null
+++ b/samples/Game Maker Language/characterStepEvent.gml	
@@ -0,0 +1,1050 @@
+// Originally from /spelunky/Scripts/Platform Engine/characterStepEvent.gml in the Spelunky Community Update Project
+
+/**********************************************************************************
+    Copyright (c) 2008, 2009 Derek Yu and Mossmouth, LLC
+    
+    This file is part of Spelunky.
+
+    You can redistribute and/or modify Spelunky, including its source code, under
+    the terms of the Spelunky User License.
+
+    Spelunky is distributed in the hope that it will be entertaining and useful,
+    but WITHOUT WARRANTY. Please see the Spelunky User License for more details.
+
+    The Spelunky User License should be available in "Game Information", which
+    can be found in the Resource Explorer, or as an external file called COPYING.
+    If not, please obtain a new copy of Spelunky from <http://spelunkyworld.com/>
+    
+***********************************************************************************/
+
+/*
+This script should be placed in the step event for the platform character.
+It updates the keys used by the character, moves all of the solids, moves the
+character, sets the sprite index, and sets the animation speed for the sprite.
+*/
+hangCountMax = 3;
+
+//////////////////////////////////////
+// KEYS
+//////////////////////////////////////
+
+kLeft = checkLeft();
+
+if (kLeft) kLeftPushedSteps += 1;
+else kLeftPushedSteps = 0;
+  
+kLeftPressed = checkLeftPressed();
+kLeftReleased = checkLeftReleased();
+  
+kRight = checkRight();
+  
+if (kRight) kRightPushedSteps += 1;
+else kRightPushedSteps = 0;
+  
+kRightPressed = checkRightPressed();
+kRightReleased = checkRightReleased();
+  
+kUp = checkUp();
+kDown = checkDown();
+  
+//key "run"
+if canRun
+    kRun = 0;
+// kRun=runKey
+else
+    kRun=0
+  
+kJump = checkJump();
+kJumpPressed = checkJumpPressed();
+kJumpReleased = checkJumpReleased();
+  
+if (cantJump > 0)
+{
+    kJump = 0;
+    kJumpPressed = 0;
+    kJumpReleased = 0;
+    cantJump -= 1;
+}
+else
+{
+    if (global.isTunnelMan and
+        sprite_index == sTunnelAttackL and
+        !holdItem)
+    {
+        kJump = 0;
+        kJumpPressed = 0;
+        kJumpReleased = 0;
+        cantJump -= 1;
+    }
+}
+
+kAttack = checkAttack();
+kAttackPressed = checkAttackPressed();
+kAttackReleased = checkAttackReleased();
+
+kItemPressed = checkItemPressed();
+
+xPrev = x;
+yPrev = y;
+
+if (stunned or dead)
+{
+    kLeft = false;
+    kLeftPressed = false;
+    kLeftReleased = false;
+    kRight = false;
+    kRightPressed = false;
+    kRightReleased = false;
+    kUp = false;
+    kDown = false;
+    kJump = false;
+    kJumpPressed = false;
+    kJumpReleased = false;
+    kAttack = false;
+    kAttackPressed = false;
+    kAttackReleased = false;
+    kItemPressed = false;
+}
+
+//////////////////////////////////////////
+// Collisions
+//////////////////////////////////////////
+
+colSolidLeft = false;
+colSolidRight = false;
+colLeft = false;
+colRight = false;
+colTop = false;
+colBot = false;
+colLadder = false;
+colPlatBot = false;
+colPlat = false;
+colWaterTop = false;
+colIceBot = false;
+runKey = false;
+if (isCollisionMoveableSolidLeft(1)) colSolidLeft = true;
+if (isCollisionMoveableSolidRight(1)) colSolidRight = true;
+if (isCollisionLeft(1)) colLeft = true;
+if (isCollisionRight(1)) colRight = true;
+if (isCollisionTop(1)) colTop = true;
+if (isCollisionBottom(1)) colBot = true;
+if (isCollisionLadder()) colLadder = true;
+if (isCollisionPlatformBottom(1)) colPlatBot = true;
+if (isCollisionPlatform()) colPlat = true;
+if (isCollisionWaterTop(1)) colWaterTop = true;
+if (collision_point(x, y+8, oIce, 0, 0)) colIceBot = true;
+if (checkRun())
+{
+    runHeld = 100;
+    runKey = true;
+}
+
+if (checkAttack() and not whipping)
+{
+    runHeld += 1;
+    runKey = true;
+}
+
+if (not runKey or (not kLeft and not kRight)) runHeld = 0;
+
+// allows the character to run left and right
+// if state!=DUCKING and state!=LOOKING_UP and state!=CLIMBING
+if (state != CLIMBING and state != HANGING)
+{
+    if (kLeftReleased and approximatelyZero(xVel)) xAcc -= 0.5
+    if (kRightReleased and approximatelyZero(xVel)) xAcc += 0.5
+    
+    if (kLeft and not kRight)
+    {
+        if (colSolidLeft)
+        {
+            // xVel = 3;
+            if (platformCharacterIs(ON_GROUND) and state != DUCKING)
+            {
+                xAcc -= 1;
+                pushTimer += 10;
+                //if (not SS_IsSoundPlaying(global.sndPush)) playSound(global.sndPush);
+            }
+        }
+        else if (kLeftPushedSteps > 2) and (facing=LEFT or approximatelyZero(xVel))
+        {
+            xAcc -= runAcc;
+        }
+        facing = LEFT;
+        //if (platformCharacterIs(ON_GROUND) and abs(xVel) > 0 and alarm[3] < 1) alarm[3] = floor(16/-xVel);
+    }
+  
+    if (kRight and not kLeft)
+    {
+        if (colSolidRight)
+        {
+            // xVel = 3;
+            if (platformCharacterIs(ON_GROUND) and state != DUCKING)
+            {
+                xAcc += 1;
+                pushTimer += 10;
+                //if (not SS_IsSoundPlaying(global.sndPush)) playSound(global.sndPush);
+            }
+        }
+        else if (kRightPushedSteps > 2 or colSolidLeft) and (facing=RIGHT or approximatelyZero(xVel))
+        {
+            xAcc += runAcc;
+        }
+        facing = RIGHT;
+        //if (platformCharacterIs(ON_GROUND) and abs(xVel) > 0 and alarm[3] < 1) alarm[3] = floor(16/xVel);
+    }
+}
+
+/******************************************
+
+  LADDERS
+  
+*******************************************/
+
+if (state == CLIMBING)
+{
+    if (instance_exists(oCape))
+    {
+        oCape.open = false;
+    }
+    kJumped = false;
+    ladderTimer = 10;
+    ladder = collision_point(x, y, oLadder, 0, 0);
+    if (ladder) x = ladder.x + 8;
+
+    if (kLeft) facing = LEFT;
+    else if (kRight) facing = RIGHT;
+    if (kUp)
+    {
+        if (collision_point(x, y-8, oLadder, 0, 0) or collision_point(x, y-8, oLadderTop, 0, 0))
+        {
+            yAcc -= climbAcc;
+            if (alarm[2] < 1) alarm[2] = 8;
+        }
+    }
+    else if (kDown)
+    {
+        if (collision_point(x, y+8, oLadder, 0, 0) or collision_point(x, y+8, oLadderTop, 0, 0))
+        {
+            yAcc += climbAcc;
+            if (alarm[2] < 1) alarm[2] = 8;
+        }
+        else
+            state = FALLING;
+        if (colBot) state = STANDING;
+    }
+    
+    if (kJumpPressed and not whipping)
+    {
+        if (kLeft)
+            xVel = -departLadderXVel;
+        else if (kRight)
+            xVel = departLadderXVel;
+        else
+            xVel = 0;
+        yAcc += departLadderYVel;
+        state = JUMPING;
+        jumpButtonReleased = 0;
+        jumpTime = 0;
+        ladderTimer = 5;
+    }
+}
+else
+{
+     if (ladderTimer > 0) ladderTimer -= 1;
+}
+
+if (platformCharacterIs(IN_AIR) and state != HANGING)
+{
+    yAcc += gravityIntensity;
+}
+
+// Player has landed
+if ((colBot or colPlatBot) and platformCharacterIs(IN_AIR) and yVel >= 0)
+{
+    if (not colPlat or colBot)
+    {
+        yVel = 0;
+        yAcc = 0;
+        state = RUNNING;
+        jumps = 0;
+    }
+    //playSound(global.sndLand);
+}
+if ((colBot or colPlatBot) and not colPlat) yVel = 0;
+
+// Player has just walked off of the edge of a solid
+if (colBot == 0 and (not colPlatBot or colPlat) and platformCharacterIs(ON_GROUND))
+{
+    state = FALLING;
+    yAcc += grav;
+    kJumped = true;
+    if (global.hasGloves) hangCount = 5;
+}
+
+if (colTop)
+{
+    if (dead or stunned) yVel = -yVel * 0.8;
+    else if (state == JUMPING) yVel = abs(yVel*0.3)
+}
+
+if (colLeft and facing == LEFT) or (colRight and facing == RIGHT)
+{
+    if (dead or stunned) xVel = -xVel * 0.5;
+    else xVel = 0;
+}
+
+/******************************************
+
+  JUMPING
+  
+*******************************************/
+
+if (kJumpReleased and platformCharacterIs(IN_AIR))
+{
+    kJumped = true;
+}
+else if (platformCharacterIs(ON_GROUND))
+{
+    oCape.open = false;
+    kJumped = false;
+}
+
+if (kJumpPressed and collision_point(x, y, oWeb, 0, 0))
+{
+    obj = instance_place(x, y, oWeb);
+    obj.life -= 1;
+    yAcc += initialJumpAcc * 2;
+    yVel -= 3;
+    xAcc += xVel/2;
+    
+    state = JUMPING;
+    jumpButtonReleased = 0;
+    jumpTime = 0;
+    
+    grav = gravNorm;
+}
+else if (kJumpPressed and colWaterTop)
+{
+    yAcc += initialJumpAcc * 2;
+    yVel -= 3;
+    xAcc += xVel/2;
+    
+    state = JUMPING;
+    jumpButtonReleased = 0;
+    jumpTime = 0;
+    
+    grav = gravNorm;
+}
+else if (global.hasCape and kJumpPressed and kJumped and platformCharacterIs(IN_AIR))
+{
+    if (not oCape.open) oCape.open = true;
+    else oCape.open = false;
+}
+else if (global.hasJetpack and kJump and kJumped and platformCharacterIs(IN_AIR) and jetpackFuel > 0)
+{
+    yAcc += initialJumpAcc;
+    yVel = -1;
+    jetpackFuel -= 1;
+    if (alarm[10] < 1) alarm[10] = 3;
+    
+    state = JUMPING;
+    jumpButtonReleased = 0;
+    jumpTime = 0;
+    
+    grav = 0;
+}
+else if (platformCharacterIs(ON_GROUND) and kJumpPressed and fallTimer == 0)
+{
+    if (xVel > 3 or xVel < -3)
+    {
+        yAcc += initialJumpAcc * 2;
+        xAcc += xVel * 2;
+    }
+    else
+    {
+        yAcc += initialJumpAcc * 2;
+        xAcc += xVel/2;
+    }
+    
+    if (global.hasJordans)
+    {
+        yAcc *= 3;
+        yAccLimit = 12;
+        grav = 0.5;
+    }
+    else if (global.hasSpringShoes) yAcc *= 1.5;
+    else
+    {
+        yAccLimit = 6;
+        grav = gravNorm;
+    }
+    
+    playSound(global.sndJump);
+    
+    pushTimer = 0;
+
+    // the "state" gets changed to JUMPING later on in the code
+    state = FALLING;
+    // "variable jumping" states
+    jumpButtonReleased = 0;
+    jumpTime = 0;
+}
+
+if (jumpTime < jumpTimeTotal) jumpTime += 1;
+//let the character continue to jump
+if (kJump == 0) jumpButtonReleased = 1;
+if (jumpButtonReleased) jumpTime = jumpTimeTotal;
+
+gravityIntensity = (jumpTime/jumpTimeTotal) * grav;
+
+if (kUp and platformCharacterIs(ON_GROUND) and not colLadder)
+{
+    looking = UP;
+    if (xVel == 0 and xAcc == 0) state = LOOKING_UP;
+}
+else looking = 0;
+
+if (not kUp and state == LOOKING_UP)
+{
+    state=STANDING
+}
+
+/******************************************
+
+  HANGING
+  
+*******************************************/
+
+if (not colTop)
+{
+if (global.hasGloves and yVel > 0)
+{
+    if (hangCount == 0 and y > 16 and !platformCharacterIs(ON_GROUND) and kRight and colRight and
+        (collision_point(x+9, y-5, oSolid, 0, 0) or collision_point(x+9, y-6, oSolid, 0, 0)))
+    {
+        state = HANGING;
+        move_snap(1, 8);
+        yVel = 0;
+        yAcc = 0;
+        grav = 0;
+    }
+    else if (hangCount == 0 and y > 16 and !platformCharacterIs(ON_GROUND) and kLeft and colLeft and
+        (collision_point(x-9, y-5, oSolid, 0, 0) or collision_point(x-9, y-6, oSolid, 0, 0)))
+    {
+        state = HANGING;
+        move_snap(1, 8);
+        yVel = 0;
+        yAcc = 0;
+        grav = 0;
+    }
+}
+else if (hangCount == 0 and y > 16 and !platformCharacterIs(ON_GROUND) and kRight and colRight and
+        (collision_point(x+9, y-5, oTree, 0, 0) or collision_point(x+9, y-6, oTree, 0, 0)))
+{
+    state = HANGING;
+    move_snap(1, 8);
+    yVel = 0;
+    yAcc = 0;
+    grav = 0;
+}
+else if (hangCount == 0 and y > 16 and !platformCharacterIs(ON_GROUND) and kLeft and colLeft and
+        (collision_point(x-9, y-5, oTree, 0, 0) or collision_point(x-9, y-6, oTree, 0, 0)))
+{
+    state = HANGING;
+    move_snap(1, 8);
+    yVel = 0;
+    yAcc = 0;
+    grav = 0;
+}
+else if (hangCount == 0 and y > 16 and !platformCharacterIs(ON_GROUND) and kRight and colRight and
+    (collision_point(x+9, y-5, oSolid, 0, 0) or collision_point(x+9, y-6, oSolid, 0, 0)) and
+    not collision_point(x+9, y-9, oSolid, 0, 0) and not collision_point(x, y+9, oSolid, 0, 0))
+{
+  state = HANGING;
+  move_snap(1, 8);
+  yVel = 0;
+  yAcc = 0;
+  grav = 0;
+}
+else if (hangCount == 0 and y > 16 and !platformCharacterIs(ON_GROUND) and kLeft and colLeft and
+    (collision_point(x-9, y-5, oSolid, 0, 0) or collision_point(x-9, y-6, oSolid, 0, 0)) and
+    not collision_point(x-9, y-9, oSolid, 0, 0) and not collision_point(x, y+9, oSolid, 0, 0))
+{
+  state = HANGING;
+  move_snap(1, 8);
+  yVel = 0;
+  yAcc = 0;
+  grav = 0;
+}
+
+if (hangCount == 0 and y > 16 and !platformCharacterIs(ON_GROUND) and state == FALLING and
+    (collision_point(x, y-5, oArrow, 0, 0) or collision_point(x, y-6, oArrow, 0, 0)) and
+    not collision_point(x, y-9, oArrow, 0, 0) and not collision_point(x, y+9, oArrow, 0, 0))
+{
+    obj = instance_nearest(x, y-5, oArrow);
+    if (obj.stuck)
+    {
+        state = HANGING;
+        // move_snap(1, 8);
+        yVel = 0;
+        yAcc = 0;
+        grav = 0;
+    }
+}
+
+/*
+if (hangCount == 0 and y > 16 and !platformCharacterIs(ON_GROUND) and state == FALLING and
+    (collision_point(x, y-5, oTreeBranch, 0, 0) or collision_point(x, y-6, oTreeBranch, 0, 0)) and
+    not collision_point(x, y-9, oTreeBranch, 0, 0) and not collision_point(x, y+9, oTreeBranch, 0, 0))
+{
+  state = HANGING;
+  // move_snap(1, 8);
+  yVel = 0;
+  yAcc = 0;
+  grav = 0;
+}
+*/
+
+}
+
+if (hangCount > 0) hangCount -= 1;
+
+if (state == HANGING)
+{
+    if (instance_exists(oCape)) oCape.open = false;
+    kJumped = false;
+    
+    if (kDown and kJumpPressed)
+    {
+        grav = gravNorm;
+        state = FALLING;
+        yAcc -= grav;
+        hangCount = 5;
+        if (global.hasGloves) hangCount = 10;
+    }
+    else if (kJumpPressed)
+    {
+        grav = gravNorm;
+        if ((facing == RIGHT and kLeft) or (facing == LEFT and kRight))
+        {
+            state = FALLING;
+            yAcc -= grav;
+        }
+        else
+        {
+            state = JUMPING;
+            yAcc += initialJumpAcc * 2;
+            if (facing == RIGHT) x -= 2;
+            else x += 2;
+        }
+        hangCount = hangCountMax;
+    }
+    
+    if ((facing == LEFT and not isCollisionLeft(2)) or
+        (facing == RIGHT and not isCollisionRight(2)))
+    {
+        grav = gravNorm;
+        state = FALLING;
+        yAcc -= grav;
+        hangCount = 4;
+    }
+}
+else
+{
+    grav = gravNorm;
+}
+
+// pressing down while standing
+if (kDown and platformCharacterIs(ON_GROUND) and not whipping)
+{
+    if (colBot)
+    {
+        state = DUCKING;
+    }
+    else if colPlatBot
+    {
+        // climb down ladder if possible, else jump down
+        fallTimer = 0;
+        if (not colBot)
+        {
+            ladder = 0;
+            ladder = instance_place(x, y+16, oLadder);
+            if (instance_exists(ladder))
+            {
+                if (abs(x-(ladder.x+8)) < 4)
+                {
+                    x = ladder.x + 8;
+
+                    xVel = 0;
+                    yVel = 0;
+                    xAcc = 0;
+                    yAcc = 0;
+                    state = CLIMBING;
+                }
+            }
+            else
+            {
+                y += 1;
+                state = FALLING;
+                yAcc += grav;
+            }
+        }
+        else
+        {
+            //the character can't move down because there is a solid in the way
+            state = RUNNING;
+        }
+    }
+}
+if (not kDown and state == DUCKING)
+{
+    state = STANDING;
+    xVel = 0;
+    xAcc = 0;
+}
+if (xVel == 0 and xAcc == 0 and state == RUNNING)
+{
+    state = STANDING;
+}
+if (xAcc != 0 and state == STANDING)
+{
+    state = RUNNING;
+}
+if (yVel < 0 and platformCharacterIs(IN_AIR) and state != HANGING)
+{
+    state = JUMPING;
+}
+if (yVel > 0 and platformCharacterIs(IN_AIR) and state != HANGING)
+{
+    state = FALLING;
+    setCollisionBounds(-5, -6, 5, 8);
+}
+else setCollisionBounds(-5, -8, 5, 8);
+
+// CLIMB LADDER
+colPointLadder = collision_point(x, y, oLadder, 0, 0) or collision_point(x, y, oLadderTop, 0, 0);
+
+if ((kUp and platformCharacterIs(IN_AIR) and collision_point(x, y-8, oLadder, 0, 0) and ladderTimer == 0) or
+    (kUp and colPointLadder and ladderTimer == 0) or
+    (kDown and colPointLadder and ladderTimer == 0 and platformCharacterIs(ON_GROUND) and collision_point(x, y+9, oLadderTop, 0, 0) and xVel == 0))
+{
+    ladder = 0;
+    ladder = instance_place(x, y-8, oLadder);
+    if (instance_exists(ladder))
+    {
+        if (abs(x-(ladder.x+8)) < 4)
+        {
+            x = ladder.x + 8;
+            if (not collision_point(x, y, oLadder, 0, 0) and
+                not collision_point(x, y, oLadderTop, 0, 0))
+            {
+                y = ladder.y + 14;
+            }
+
+            xVel = 0;
+            yVel = 0;
+            xAcc = 0;
+            yAcc = 0;
+            state = CLIMBING;
+        }
+    }
+}
+
+/*
+if (sprite_index == sDuckToHangL or sprite_index == sDamselDtHL)
+{
+    ladder = 0;
+    if (facing == LEFT and collision_rectangle(x-8, y, x, y+16, oLadder, 0, 0) and not collision_point(x-4, y+16, oSolid, 0, 0))
+    {
+        ladder = instance_nearest(x-4, y+16, oLadder);
+    }
+    else if (facing == RIGHT and collision_rectangle(x, y, x+8, y+16, oLadder, 0, 0) and not collision_point(x+4, y+16, oSolid, 0, 0))
+    {
+        ladder = instance_nearest(x+4, y+16, oLadder);
+    }
+    
+    if (ladder)
+    {
+        x = ladder.x + 8;
+
+        xVel = 0;
+        yVel = 0;
+        xAcc = 0;
+        yAcc = 0;
+        state = CLIMBING;
+    }
+}
+*/
+/*
+if (colLadder and state == CLIMBING and kJumpPressed and not whipping)
+{
+    if (kLeft)
+        xVel = -departLadderXVel;
+    else if (kRight)
+        xVel = departLadderXVel;
+    else
+        xVel = 0;
+    yAcc += departLadderYVel;
+    state = JUMPING;
+    jumpButtonReleased = 0;
+    jumpTime = 0;
+    ladderTimer = 5;
+}
+*/
+
+// Calculate horizontal/vertical friction
+if (state == CLIMBING)
+{
+    xFric = frictionClimbingX;
+    yFric = frictionClimbingY;
+}
+else
+{
+    if (runKey and platformCharacterIs(ON_GROUND) and runHeld >= 10)
+    {
+        if (kLeft) // run
+        {
+            xVel -= 0.1;
+            xVelLimit = 6;
+            xFric = frictionRunningFastX;
+        }
+        else if (kRight)
+        {
+            xVel += 0.1;
+            xVelLimit = 6;
+            xFric = frictionRunningFastX;
+        }
+    }
+    else if (state == DUCKING)
+    {
+        if (xVel<2 and xVel>-2)
+        {
+            xFric = 0.2
+            xVelLimit = 3;
+            image_speed = 0.8;
+        }
+        else if (kLeft and global.downToRun) // run
+        {
+            xVel -= 0.1;
+            xVelLimit = 6;
+            xFric = frictionRunningFastX;
+        }
+        else if (kRight and global.downToRun)
+        {
+            xVel += 0.1;
+            xVelLimit = 6;
+            xFric = frictionRunningFastX;
+        }
+        else
+        {
+            xVel *= 0.8;
+            if (xVel < 0.5) xVel = 0;
+            xFric = 0.2
+            xVelLimit = 3;
+            image_speed = 0.8;
+        }
+    }
+    else
+    {
+        //decrease the friction when the character is "flying"
+        if (platformCharacterIs(IN_AIR))
+        {
+            if (dead or stunned) xFric = 1.0;
+            else xFric = 0.8;
+        }
+        else
+        {
+            xFric = frictionRunningX;
+        }
+    }
+    
+    // Stuck on web or underwater
+    if (collision_point(x, y, oWeb, 0, 0))
+    {
+        xFric = 0.2;
+        yFric = 0.2;
+        fallTimer = 0;
+    }
+    else if (collision_point(x, y, oWater, -1, -1))
+    {
+        if (instance_exists(oCape)) oCape.open = false;
+    
+        if (state == FALLING and yVel > 0)
+        {
+            yFric = 0.5;
+        }
+        else if (not collision_point(x, y-9, oWater, -1, -1))
+        {
+            yFric = 1;
+        }
+        else
+        {
+            yFric = 0.9;
+        }
+    }
+    else
+    {
+        swimming = false;
+        yFric = 1;
+    }
+}
+
+if (colIceBot and state != DUCKING and not global.hasSpikeShoes)
+{
+    xFric = 0.98;
+    yFric = 1;
+}
+
+// RUNNING
+
+if (platformCharacterIs(ON_GROUND))
+{
+    if (state == RUNNING and kLeft and colLeft)
+    {
+        pushTimer += 1;
+    }
+    else if (state == RUNNING and kRight and colRight)
+    {
+        pushTimer += 1;
+    }
+    else
+    {
+        pushTimer = 0;
+    }
+    
+    if (platformCharacterIs(ON_GROUND) and not kJump and not kDown and not runKey)
+    {   
+        xVelLimit = 3;
+    }
+    
+    
+    // ledge flip
+    if (state == DUCKING and abs(xVel) < 3 and facing == LEFT and
+        collision_point(x, y+9, oSolid, 0, 0) and not collision_line(x-1, y+9, x-10, y+9, oSolid, 0, 0) and kLeft)
+    {
+        state = DUCKTOHANG;
+        
+        if (holdItem)
+        {
+            holdItem.held = false;
+            if (holdItem.type == "Gold Idol") holdItem.y -= 8;
+            scrDropItem(-1, -4);
+        }
+        
+        with oMonkey
+        {
+            // knock off monkeys that grabbed you
+            if (status == 7)
+            {
+                xVel = -1;
+                yVel = -4;
+                status = 1;
+                vineCounter = 20;
+                grabCounter = 60;
+            }
+        }
+    }
+    else if (state == DUCKING and abs(xVel) < 3 and facing == RIGHT and
+        collision_point(x, y+9, oSolid, 0, 0) and not collision_line(x+1, y+9, x+10, y+9, oSolid, 0, 0) and kRight)
+    {
+        state = DUCKTOHANG;
+        
+        if (holdItem)
+        {
+            // holdItem.held = false;
+            if (holdItem.type == "Gold Idol") holdItem.y -= 8;
+            scrDropItem(1, -4);
+        }
+        
+        with oMonkey
+        {
+            // knock off monkeys that grabbed you
+            if (status == 7)
+            {
+                xVel = 1;
+                yVel = -4;
+                status = 1;
+                vineCounter = 20;
+                grabCounter = 60;
+            }
+        }
+    }
+}
+
+if (state == DUCKTOHANG)
+{
+    x = xPrev;
+    y = yPrev;
+    xVel = 0;
+    yVel = 0;
+    xAcc = 0;
+    yAcc = 0;
+    grav = 0;
+}
+
+// PARACHUTE AND CAPE
+if (instance_exists(oParachute))
+{
+    yFric = 0.5;
+}
+if (instance_exists(oCape))
+{
+    if (oCape.open) yFric = 0.5;
+}
+
+if (pushTimer > 100) pushTimer = 100;
+
+// limits the acceleration if it is too extreme
+if (xAcc > xAccLimit) xAcc = xAccLimit;
+else if (xAcc < -xAccLimit) xAcc = -xAccLimit;
+if (yAcc > yAccLimit) yAcc = yAccLimit;
+else if (yAcc < -yAccLimit) yAcc = -yAccLimit;
+
+// applies the acceleration
+xVel += xAcc;
+if (dead or stunned) yVel += 0.6;
+else yVel += yAcc;
+
+// nullifies the acceleration
+xAcc = 0;
+yAcc = 0;
+
+// applies the friction to the velocity, now that the velocity has been calculated
+xVel *= xFric;
+yVel *= yFric;
+
+// apply ball and chain
+if (instance_exists(oBall))
+{
+    if (distance_to_object(oBall) >= 24)
+    {
+        if (xVel > 0 and oBall.x < x and abs(oBall.x-x) > 24) xVel = 0;
+        if (xVel < 0 and oBall.x > x and abs(oBall.x-x) > 24) xVel = 0;
+        if (yVel > 0 and oBall.y < y and abs(oBall.y-y) > 24)
+        {
+            if (abs(oBall.x-x) < 1)
+            {
+                x = oBall.x;
+            }
+            else if (oBall.x < x and not kRight)
+            {
+                if (xVel > 0) xVel *= -0.25;
+                else if (xVel == 0) xVel -= 1;
+            }
+            else if (oBall.x > x and not kLeft)
+            {
+                if (xVel < 0) xVel *= -0.25;
+                else if (xVel == 0) xVel += 1;
+            }
+            yVel = 0;
+            fallTimer = 0;
+        }
+        if (yVel < 0 and oBall.y > y and abs(oBall.y-y) > 24) yVel = 0;
+    }
+}
+
+// apply the limits since the velocity may be too extreme
+if (not dead and not stunned)
+{
+    if (xVel > xVelLimit) xVel = xVelLimit;
+    else if (xVel < -xVelLimit) xVel = -xVelLimit;
+}
+if (yVel > yVelLimit) yVel = yVelLimit;
+else if (yVel < -yVelLimit) yVel = -yVelLimit;
+    
+// approximates the "active" variables
+if approximatelyZero(xVel) xVel=0
+if approximatelyZero(yVel) yVel=0
+if approximatelyZero(xAcc) xAcc=0
+if approximatelyZero(yAcc) yAcc=0
+
+// prepares the character to move up a hill
+// we need to use the "slopeYPrev" variable later to know the "true" y previous value
+// keep this condition the same
+if maxSlope>0 and platformCharacterIs(ON_GROUND) and xVel!=0
+{
+  slopeYPrev=y
+  for(y=y;y>=slopeYPrev-maxSlope;y-=1)
+    if colTop
+      break
+  slopeChangeInY=slopeYPrev-y
+}
+else
+  slopeChangeInY=0
+
+// moves the character, and balances out the effects caused by other processes
+// keep this condition the same
+if maxSlope*abs(xVel)>0 and platformCharacterIs(ON_GROUND)
+{
+  // we need to check if we should dampen out the speed as the character runs on upward slopes
+  xPrev=x
+  yPrev=slopeYPrev       // we don't want to use y, because y is too high
+  yPrevHigh=y            // we'll use the higher previous variable later
+  moveTo(xVel,yVel+slopeChangeInY)
+  dist=point_distance(xPrev,yPrev,x,y)// overall distance that has been traveled
+  // we should have only ran at xVel
+  if dist>abs(xVelInteger)
+  {
+    // show_message(string(dist)+ " "+string(abs(xVelInteger)))
+    excess=dist-abs(xVelInteger)
+    if(xVelInteger<0)
+      excess*=-1
+    // move back since the character moved too far
+    x=xPrev
+    y=yPrevHigh     // we need the character to be high so the character can move down
+    // this time we'll move the correct distance, but we need to shorten out the xVel a little
+    // these lines can be changed for different types of slowing down when running up hills
+    ratio=abs(xVelInteger)/dist*0.9        //can be changed
+    moveTo( round(xVelInteger*ratio),round(yVelInteger*ratio+slopeChangeInY) )
+  }
+}
+else
+{
+  // we simply move xVel and yVel while in the air or on a ladder
+  moveTo(xVel,yVel)
+}
+// move the character downhill if possible
+// we need to multiply maxDownSlope by the absolute value of xVel since the character normally runs at an xVel larger than 1
+if not colBot and maxDownSlope>0 and xVelInteger!=0 and platformCharacterIs(ON_GROUND)
+{
+  //the character is floating just above the slope, so move the character down
+  upYPrev=y
+  for(y=y;y<=upYPrev+maxDownSlope;y+=1)
+    if colBot             // we hit a solid below
+    {
+      upYPrev=y           // I know that this doesn't seem to make sense, because of the name of the variable, but it all works out correctly after we break out of this loop
+      break
+    }
+  y=upYPrev
+}
+
+//figures out what the sprite index of the character should be
+characterSprite();
+
+//sets the previous state and the previously previous state
+statePrevPrev = statePrev;
+statePrev = state;
+
+//calculates the image_speed based on the character's velocity
+if (state == RUNNING or state == DUCKING or state == LOOKING_UP)
+{
+    if (state == RUNNING or state == LOOKING_UP) image_speed = abs(xVel) * runAnimSpeed + 0.1;
+}
+
+if (state == CLIMBING) image_speed = sqrt(sqr(abs(xVel))+sqr(abs(yVel))) * climbAnimSpeed
+if (xVel >= 4 or xVel <= -4)
+{
+    image_speed = 1;
+    if (platformCharacterIs(ON_GROUND)) setCollisionBounds(-8, -8, 8, 8);
+    else setCollisionBounds(-5, -8, 5, 8);
+}
+else setCollisionBounds(-5, -8, 5, 8);
+if (whipping) image_speed = 1;
+if (state == DUCKTOHANG)
+{
+    image_index = 0;
+    image_speed = 0.8;
+}
+//limit the image_speed at 1 so the animation always looks good
+if (image_speed > 1) image_speed = 1;
diff --git a/samples/Game Maker Language/doEventPlayerDeath.gml b/samples/Game Maker Language/doEventPlayerDeath.gml
new file mode 100644
index 00000000..47ee7780
--- /dev/null
+++ b/samples/Game Maker Language/doEventPlayerDeath.gml	
@@ -0,0 +1,251 @@
+/*
+    Originally from /Source/gg2/Scripts/Events/doEventPlayerDeath.gml in Gang Garrison 2
+
+    Copyright (C) 2008-2013 Faucet Software
+    http://www.ganggarrison.com
+
+    This program is free software; 
+    you can redistribute it and/or modify it under the terms of the GNU General Public License
+    as published by the Free Software Foundation; either version 3 of the License, or (at your option)
+    any later version.
+    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
+    without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+    See the GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License along with this program; if not,
+    see <http://www.gnu.org/licenses>.
+
+    Additional permission under GNU GPL version 3 section 7
+    If you modify this Program, or any covered work, by linking or combining it with the Game Maker runtime library, 
+    the 39dll library/extension, Hobbel's Download Manager DLL, or modified versions of these libraries,
+    the licensors of this Program grant you additional permission to convey the resulting work.
+*/
+
+/**
+ * Perform the "player death" event, i.e. change the appropriate scores,
+ * destroy the character object to much splattering and so on.
+ *
+ * argument0: The player whose character died
+ * argument1: The player who inflicted the fatal damage (or noone for unknown)
+ * argument2: The player who assisted the kill (or noone for no assist)
+ * argument3: The source of the fatal damage
+ */
+var victim, killer, assistant, damageSource;
+victim = argument0;
+killer = argument1;
+assistant = argument2;
+damageSource = argument3;
+
+if(!instance_exists(killer))
+    killer = noone;
+
+if(!instance_exists(assistant))
+    assistant = noone;
+
+//*************************************
+//*      Scoring and Kill log
+//*************************************
+ 
+
+recordKillInLog(victim, killer, assistant, damageSource);
+
+victim.stats[DEATHS] += 1;
+if(killer)
+{
+    if(damageSource == WEAPON_KNIFE || damageSource == WEAPON_BACKSTAB)
+    {
+        killer.stats[STABS] += 1;
+        killer.roundStats[STABS] += 1;
+        killer.stats[POINTS] += 1;
+        killer.roundStats[POINTS] +=1;
+    }
+    
+    if (victim.object.currentWeapon.object_index == Medigun)
+    {
+        if (victim.object.currentWeapon.uberReady)
+        {
+            killer.stats[BONUS] += 1;
+            killer.roundStats[BONUS] += 1;
+            killer.stats[POINTS] += 1;
+            killer.roundStats[POINTS] += 1;
+        }
+    }
+        
+    if (killer != victim)
+    {
+        killer.stats[KILLS] += 1;
+        killer.roundStats[KILLS] += 1;
+        killer.stats[POINTS] += 1;
+        killer.roundStats[POINTS] += 1;
+        if(victim.object.intel)
+        {
+            killer.stats[DEFENSES] += 1;
+            killer.roundStats[DEFENSES] += 1;
+            killer.stats[POINTS] += 1;
+            killer.roundStats[POINTS] += 1;
+            recordEventInLog(4, killer.team, killer.name, global.myself == killer);
+        }
+    }
+}
+
+if (assistant)
+{
+    assistant.stats[ASSISTS] += 1;
+    assistant.roundStats[ASSISTS] += 1;
+    assistant.stats[POINTS] += .5;
+    assistant.roundStats[POINTS] += .5;
+}
+
+//SPEC
+if (victim == global.myself)
+    instance_create(victim.object.x, victim.object.y, Spectator);
+
+//*************************************
+//*         Gibbing
+//*************************************
+var xoffset, yoffset, xsize, ysize;
+
+xoffset = view_xview[0];
+yoffset = view_yview[0];
+xsize = view_wview[0];
+ysize = view_hview[0];
+
+randomize();
+with(victim.object) {
+    if((damageSource == WEAPON_ROCKETLAUNCHER 
+    or damageSource == WEAPON_MINEGUN or damageSource == FRAG_BOX 
+    or damageSource == WEAPON_REFLECTED_STICKY or damageSource == WEAPON_REFLECTED_ROCKET 
+    or damageSource == FINISHED_OFF_GIB or damageSource == GENERATOR_EXPLOSION) 
+    and (player.class != CLASS_QUOTE) and (global.gibLevel>1) 
+    and distance_to_point(xoffset+xsize/2,yoffset+ysize/2) < 900) {
+        if (hasReward(victim, 'PumpkinGibs'))
+        {
+            repeat(global.gibLevel * 2) {
+                createGib(x,y,PumpkinGib,hspeed,vspeed,random(145)-72, choose(0,1,1,2,2,3), false, true)
+            }
+        }
+        else
+        {
+            repeat(global.gibLevel) {
+                createGib(x,y,Gib,hspeed,vspeed,random(145)-72, 0, false)
+            }
+            switch(player.team)
+            {
+            case TEAM_BLUE :
+                repeat(global.gibLevel - 1) {
+                    createGib(x,y,BlueClump,hspeed,vspeed,random(145)-72, 0, false)
+                }
+                break;
+            case TEAM_RED :
+                repeat(global.gibLevel - 1) {
+                    createGib(x,y,RedClump,hspeed,vspeed,random(145)-72, 0, false)
+                }
+                break;
+            }
+        }
+
+        repeat(global.gibLevel * 14) {
+            var blood;
+            blood = instance_create(x+random(23)-11,y+random(23)-11,BloodDrop);
+            blood.hspeed=(random(21)-10);
+            blood.vspeed=(random(21)-13);
+            if (hasReward(victim, 'PumpkinGibs'))
+            {
+                blood.sprite_index = PumpkinJuiceS;
+            }
+        }
+        if (!hasReward(victim, 'PumpkinGibs'))
+        {
+            //All Classes gib head, hands, and feet
+            if(global.gibLevel > 2 || choose(0,1) == 1)
+                createGib(x,y,Headgib,0,0,random(105)-52, player.class, false);
+            repeat(global.gibLevel -1){
+                //Medic has specially colored hands
+                if (player.class == CLASS_MEDIC){
+                    if (player.team == TEAM_RED)
+                        createGib(x,y,Hand, hspeed, vspeed, random(105)-52 , 9, false);
+                    else
+                        createGib(x,y,Hand, hspeed, vspeed, random(105)-52 , 10, false);
+                }else{
+                    createGib(x,y,Hand, hspeed, vspeed, random(105)-52 , player.class, false);
+                }
+                createGib(x,y,Feet,random(5)-2,random(3),random(13)-6 , player.class, true);
+            }
+        }
+
+        //Class specific gibs
+        switch(player.class) {
+        case CLASS_PYRO :
+            if(global.gibLevel > 2 || choose(0,1) == 1)
+                createGib(x,y,Accesory,hspeed,vspeed,random(105)-52, 4, false)
+            break;
+        case CLASS_SOLDIER :
+            if(global.gibLevel > 2 || choose(0,1) == 1){
+                switch(player.team) {
+                    case TEAM_BLUE :
+                        createGib(x,y,Accesory,hspeed,vspeed,random(105)-52, 2, false);
+                        break;
+                    case TEAM_RED :
+                        createGib(x,y,Accesory,hspeed,vspeed,random(105)-52, 1, false);
+                        break;
+                    }
+            }
+            break;
+        case CLASS_ENGINEER :
+            if(global.gibLevel > 2 || choose(0,1) == 1)
+                createGib(x,y,Accesory,hspeed,vspeed,random(105)-52, 3, false)
+            break;
+        case CLASS_SNIPER :
+            if(global.gibLevel > 2 || choose(0,1) == 1)
+                createGib(x,y,Accesory,hspeed,vspeed,random(105)-52, 0, false)
+            break;
+        }
+        playsound(x,y,Gibbing);
+    } else {
+        var deadbody;
+        if player.class != CLASS_QUOTE playsound(x,y,choose(DeathSnd1, DeathSnd2));
+        deadbody = instance_create(x,y-30,DeadGuy);
+        // 'GS' reward - *G*olden *S*tatue
+        if(hasReward(player, 'GS'))
+        {
+            deadbody.sprite_index = haxxyStatue;
+            deadbody.image_index = 0;
+        }
+        else
+        { 
+            deadbody.sprite_index = sprite_index;
+            deadbody.image_index = CHARACTER_ANIMATION_DEAD;
+        }
+        deadbody.hspeed=hspeed;
+        deadbody.vspeed=vspeed;
+        if(hspeed>0) {
+            deadbody.image_xscale = -1;  
+        }
+    }
+}
+
+if (global.gg_birthday){
+    myHat = instance_create(victim.object.x,victim.object.y,PartyHat);
+    myHat.image_index = victim.team;
+}
+if (global.xmas){
+    myHat = instance_create(victim.object.x,victim.object.y,XmasHat);
+    myHat.image_index = victim.team;
+}
+
+
+with(victim.object) {       
+    instance_destroy();
+}
+
+//*************************************
+//*         Deathcam
+//*************************************
+if( global.killCam and victim == global.myself and killer and killer != victim and !(damageSource == KILL_BOX || damageSource == FRAG_BOX || damageSource == FINISHED_OFF || damageSource == FINISHED_OFF_GIB || damageSource == GENERATOR_EXPLOSION)) {
+    instance_create(0,0,DeathCam);
+    DeathCam.killedby=killer;
+    DeathCam.name=killer.name;
+    DeathCam.oldxview=view_xview[0];
+    DeathCam.oldyview=view_yview[0];
+    DeathCam.lastDamageSource=damageSource;
+    DeathCam.team = global.myself.team;
+}
diff --git a/samples/Game Maker Language/faucet-http.gml b/samples/Game Maker Language/faucet-http.gml
new file mode 100644
index 00000000..c9b4d0f5
--- /dev/null
+++ b/samples/Game Maker Language/faucet-http.gml	
@@ -0,0 +1,1469 @@
+#define __http_init
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Creates global.__HttpClient
+// real __http_init()
+
+global.__HttpClient = object_add();
+object_set_persistent(global.__HttpClient, true);
+
+#define __http_split
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// real __http_split(string text, delimeter delimeter, real limit)
+// Splits string into items
+
+// text - string comma-separated values
+// delimeter - delimeter to split by
+// limit  if non-zero, maximum times to split text
+// When limited, the remaining text will be left as the last item.
+// E.g. splitting "1,2,3,4,5" with delimeter "," and limit 2 yields this list:
+// "1", "2", "3,4,5"
+
+// return value - ds_list containing strings of values
+
+var text, delimeter, limit;
+text = argument0;
+delimeter = argument1;
+limit = argument2;
+
+var list, count;
+list = ds_list_create();
+count = 0;
+
+while (string_pos(delimeter, text) != 0)
+{
+    ds_list_add(list, string_copy(text, 1, string_pos(delimeter,text) - 1));
+    text = string_copy(text, string_pos(delimeter, text) + string_length(delimeter), string_length(text) - string_pos(delimeter, text));
+
+    count += 1;
+    if (limit and count == limit)
+        break;
+}
+ds_list_add(list, text);
+
+return list;
+
+#define __http_parse_url
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Parses a URL into its components
+// real __http_parse_url(string url)
+
+// Return value is a ds_map containing keys for the different URL parts: (or -1 on failure)
+// "url" - the URL which was passed in
+// "scheme" - the URL scheme (e.g. "http")
+// "host" - the hostname (e.g. "example.com" or "127.0.0.1")
+// "port" - the port (e.g. 8000) - this is a real, unlike the others
+// "abs_path" - the absolute path (e.g. "/" or "/index.html")
+// "query" - the query string (e.g. "a=b&c=3")
+// Parts which are not included will not be in the map
+// e.g. http://example.com will not have the "port", "path" or "query" keys
+
+// This will *only* work properly for URLs of format:
+// scheme ":" "//" host [ ":" port ] [ abs_path [ "?" query ]]"
+// where [] denotes an optional component
+// file: URLs will *not* work as they lack the authority (host:port) component
+// It will not work correctly for IPv6 host values
+
+var url;
+url = argument0;
+
+var map;
+map = ds_map_create();
+ds_map_add(map, 'url', url);
+
+// before scheme
+var colonPos;
+// Find colon for end of scheme
+colonPos = string_pos(':', url);
+// No colon - bad URL
+if (colonPos == 0)
+    return -1;
+ds_map_add(map, 'scheme', string_copy(url, 1, colonPos - 1));
+url = string_copy(url, colonPos + 1, string_length(url) - colonPos);
+
+// before double slash
+// remove slashes (yes this will screw up file:// but who cares)
+while (string_char_at(url, 1) == '/')
+    url = string_copy(url, 2, string_length(url) - 1);
+
+// before hostname
+var slashPos, colonPos;
+// Find slash for beginning of path
+slashPos = string_pos('/', url);
+// No slash ahead - http://host format with no ending slash
+if (slashPos == 0)
+{
+    // Find : for beginning of port
+    colonPos = string_pos(':', url);
+}
+else
+{
+    // Find : for beginning of port prior to /
+    colonPos = string_pos(':', string_copy(url, 1, slashPos - 1));
+}
+// No colon - no port
+if (colonPos == 0)
+{
+    // There was no slash
+    if (slashPos == 0)
+    {
+        ds_map_add(map, 'host', url);
+        return map;
+    }
+    // There was a slash
+    else
+    {
+        ds_map_add(map, 'host', string_copy(url, 1, slashPos - 1));
+        url = string_copy(url, slashPos, string_length(url) - slashPos + 1);
+    }
+}
+// There's a colon - port specified
+else
+{
+    // There was no slash
+    if (slashPos == 0)
+    {
+        ds_map_add(map, 'host', string_copy(url, 1, colonPos - 1));
+        ds_map_add(map, 'port', real(string_copy(url, colonPos + 1, string_length(url) - colonPos)));
+        return map;
+    }
+    // There was a slash
+    else
+    {
+        ds_map_add(map, 'host', string_copy(url, 1, colonPos - 1));
+        url = string_copy(url, colonPos + 1, string_length(url) - colonPos);
+        slashPos = string_pos('/', url);
+        ds_map_add(map, 'port', real(string_copy(url, 1, slashPos - 1)));
+        url = string_copy(url, slashPos, string_length(url) - slashPos + 1); 
+    }
+}
+
+// before path
+var queryPos;
+queryPos = string_pos('?', url);
+// There's no ? - no query
+if (queryPos == 0)
+{
+    ds_map_add(map, 'abs_path', url);
+    return map;
+}
+else
+{
+    ds_map_add(map, 'abs_path', string_copy(url, 1, queryPos - 1));
+    ds_map_add(map, 'query', string_copy(url, queryPos + 1, string_length(url) - queryPos));
+    return map;
+}
+
+// Return -1 upon unlikely error
+ds_map_destroy(map);
+return -1;
+
+#define __http_resolve_url
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Takes a base URL and a URL reference and applies it to the base URL
+// Returns resulting absolute URL
+// string __http_resolve_url(string baseUrl, string refUrl)
+
+// Return value is a string containing the new absolute URL, or "" on failure
+
+// Works only for restricted URL syntax as understood by by http_resolve_url
+// The sole restriction of which is that only scheme://authority/path URLs work
+// This notably excludes file: URLs which lack the authority component
+
+// As described by RFC3986:
+//      URI-reference = URI / relative-ref
+//      relative-ref  = relative-part [ "?" query ] [ "#" fragment ]
+//      relative-part = "//" authority path-abempty
+//                    / path-absolute
+//                    / path-noscheme
+//                    / path-empty
+// However http_resolve_url does *not* deal with fragments
+
+// Algorithm based on that of section 5.2.2 of RFC 3986
+
+var baseUrl, refUrl;
+baseUrl = argument0;
+refUrl = argument1;
+
+// Parse base URL
+var urlParts;
+urlParts = __http_parse_url(baseUrl);
+if (urlParts == -1)
+    return '';
+
+// Try to parse reference URL
+var refUrlParts, canParseRefUrl;
+refUrlParts = __http_parse_url(refUrl);
+canParseRefUrl = (refUrlParts != -1);
+if (refUrlParts != -1)
+    ds_map_destroy(refUrlParts);
+
+var result;
+result = '';
+
+// Parsing of reference URL succeeded - it's absolute and we're done
+if (canParseRefUrl)
+{
+    result = refUrl;
+}
+// Begins with '//' - scheme-relative URL
+else if (string_copy(refUrl, 1, 2) == '//' and string_length(refUrl) > 2)
+{
+    result = ds_map_find_value(urlParts, 'scheme') + ':' + refUrl;
+}
+// Is or begins with '/' - absolute path relative URL
+else if (((string_char_at(refUrl, 1) == '/' and string_length(refUrl) > 1) or refUrl == '/')
+// Doesn't begin with ':' and is not blank - relative path relative URL
+    or (string_char_at(refUrl, 1) != ':' and string_length(refUrl) > 0)) 
+{
+    // Find '?' for query
+    var queryPos;
+    queryPos = string_pos('?', refUrl);
+    // No query
+    if (queryPos == 0)
+    {
+        refUrl = __http_resolve_path(ds_map_find_value(urlParts, 'abs_path'), refUrl);
+        ds_map_replace(urlParts, 'abs_path', refUrl);
+        if (ds_map_exists(urlParts, 'query'))
+            ds_map_delete(urlParts, 'query');
+    }
+    // Query exists, split
+    else
+    {
+        var path, query;
+        path = string_copy(refUrl, 1, queryPos - 1);
+        query = string_copy(refUrl, queryPos + 1, string_length(relUrl) - queryPos);
+        path = __http_resolve_path(ds_map_find_value(urlParts, 'abs_path'), path);
+        ds_map_replace(urlParts, 'abs_path', path);
+        if (ds_map_exists(urlParts, 'query'))
+            ds_map_replace(urlParts, 'query', query);
+        else
+            ds_map_add(urlParts, 'query', query);
+    }
+    result = __http_construct_url(urlParts);
+}
+
+ds_map_destroy(urlParts);
+return result;
+
+#define __http_resolve_path
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Takes a base path and a path reference and applies it to the base path
+// Returns resulting absolute path
+// string __http_resolve_path(string basePath, string refPath)
+
+// Return value is a string containing the new absolute path
+
+// Deals with UNIX-style / paths, not Windows-style \ paths
+// Can be used to clean up .. and . in non-absolute paths too ('' as basePath)
+
+var basePath, refPath;
+basePath = argument0;
+refPath = argument1;
+
+// refPath begins with '/' (is absolute), we can ignore all of basePath
+if (string_char_at(refPath, 1) == '/')
+{
+    basePath = refPath;
+    refPath = '';
+}
+
+var parts, refParts;
+parts = __http_split(basePath, '/', 0);
+refParts = __http_split(refPath, '/', 0);
+
+if (refPath != '')
+{
+    // Find last part of base path
+    var lastPart;
+    lastPart = ds_list_find_value(parts, ds_list_size(parts) - 1);
+
+    // If it's not blank (points to a file), remove it
+    if (lastPart != '')
+    {
+        ds_list_delete(parts, ds_list_size(parts) - 1);
+    }
+    
+    // Concatenate refParts to end of parts
+    var i;
+    for (i = 0; i < ds_list_size(refParts); i += 1)
+        ds_list_add(parts, ds_list_find_value(refParts, i));
+}
+
+// We now don't need refParts any more
+ds_list_destroy(refParts);
+
+// Deal with '..' and '.'
+for (i = 0; i < ds_list_size(parts); i += 1)
+{
+    var part;
+    part = ds_list_find_value(parts, i);
+
+    if (part == '.')
+    {
+        if (i == 1 or i == ds_list_size(parts) - 1)
+            ds_list_replace(parts, i, '');
+        else
+            ds_list_delete(parts, i);
+        i -= 1;
+        continue;
+    }
+    else if (part == '..')
+    {
+        if (i > 1)
+        {
+            ds_list_delete(parts, i - 1);
+            ds_list_delete(part, i);
+            i -= 2;
+        }
+        else
+        {
+            ds_list_replace(parts, i, '');
+            i -= 1;
+        }
+        continue;
+    }
+    else if (part == '' and i != 0 and i != ds_list_size(parts) - 1)
+    {
+        ds_list_delete(parts, i);
+        i -= 1;
+        continue;
+    }
+}
+
+// Reconstruct path from parts
+var path;
+path = '';
+for (i = 0; i < ds_list_size(parts); i += 1)
+{
+    if (i != 0)
+        path += '/';
+    path += ds_list_find_value(parts, i);
+}
+
+ds_map_destroy(parts);
+return path;
+
+#define __http_parse_hex
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Takes a lowercase hexadecimal string and returns its integer value
+// real __http_parse_hex(string hexString)
+
+// Return value is the whole number value (or -1 if invalid)
+// Only works for whole numbers (non-fractional numbers >= 0) and lowercase hex
+
+var hexString;
+hexString = argument0;
+
+var result, hexValues;
+result = 0;
+hexValues = "0123456789abcdef";
+
+var i;
+for (i = 1; i <= string_length(hexString); i += 1) {
+    result *= 16;
+    var digit;
+    digit = string_pos(string_char_at(hexString, i), hexValues) - 1;
+    if (digit == -1)
+        return -1;
+    result += digit;
+}
+
+return result;
+
+#define __http_construct_url
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Constructs an URL from its components (as http_parse_url would return)
+// string __http_construct_url(real parts)
+
+// Return value is the string of the constructed URL
+// Keys of parts map:
+// "scheme" - the URL scheme (e.g. "http")
+// "host" - the hostname (e.g. "example.com" or "127.0.0.1")
+// "port" - the port (e.g. 8000) - this is a real, unlike the others
+// "abs_path" - the absolute path (e.g. "/" or "/index.html")
+// "query" - the query string (e.g. "a=b&c=3")
+// Parts which are omitted will be omitted in the URL
+// e.g. http://example.com lacks "port", "path" or "query" keys
+
+// This will *only* work properly for URLs of format:
+// scheme ":" "//" host [ ":" port ] [ abs_path [ "?" query ]]"
+// where [] denotes an optional component
+// file: URLs will *not* work as they lack the authority (host:port) component
+// Should work correctly for IPv6 host values, but bare in mind parse_url won't
+
+var parts;
+parts = argument0;
+
+var url;
+url = '';
+
+url += ds_map_find_value(parts, 'scheme');
+url += '://';
+url += ds_map_find_value(parts, 'host');
+if (ds_map_exists(parts, 'port'))
+    url += ':' + string(ds_map_find_value(parts, 'port'));
+if (ds_map_exists(parts, 'abs_path'))
+{
+    url += ds_map_find_value(parts, 'abs_path');
+    if (ds_map_exists(parts, 'query'))
+        url += '?' + ds_map_find_value(parts, 'query');
+}
+
+return url;
+
+#define __http_prepare_request
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Internal function - prepares request
+// void __http_prepare_request(real client, string url, real headers)
+
+// client - HttpClient object to prepare
+// url - URL to send GET request to
+// headers - ds_map of extra headers to send, -1 if none
+
+var client, url, headers;
+client = argument0;
+url = argument1;
+headers = argument2;
+
+var parsed;
+parsed = __http_parse_url(url);
+
+if (parsed == -1)
+    show_error("Error when making HTTP GET request - can't parse URL: " + url, true);
+
+if (!ds_map_exists(parsed, 'port'))
+    ds_map_add(parsed, 'port', 80);
+if (!ds_map_exists(parsed, 'abs_path'))
+    ds_map_add(parsed, 'abs_path', '/');
+
+with (client)
+{
+    destroyed = false;
+    CR = chr(13);
+    LF = chr(10);
+    CRLF = CR + LF;
+    socket = tcp_connect(ds_map_find_value(parsed, 'host'), ds_map_find_value(parsed, 'port'));
+    state = 0;
+    errored = false;
+    error = '';
+    linebuf = '';
+    line = 0;
+    statusCode = -1;
+    reasonPhrase = '';
+    responseBody = buffer_create();
+    responseBodySize = -1;
+    responseBodyProgress = -1;
+    responseHeaders = ds_map_create();
+    requestUrl = url;
+    requestHeaders = headers;
+
+    //  Request       = Request-Line              ; Section 5.1
+    //                  *(( general-header        ; Section 4.5
+    //                   | request-header         ; Section 5.3
+    //                   | entity-header ) CRLF)  ; Section 7.1
+    //                  CRLF
+    //                  [ message-body ]          ; Section 4.3
+
+    // "The Request-Line begins with a method token, followed by the
+    // Request-URI and the protocol version, and ending with CRLF. The
+    // elements are separated by SP characters. No CR or LF is allowed
+    // except in the final CRLF sequence."
+    if (ds_map_exists(parsed, 'query'))
+        write_string(socket, 'GET ' + ds_map_find_value(parsed, 'abs_path') + '?' + ds_map_find_value(parsed, 'query') + ' HTTP/1.1' + CRLF);
+    else
+        write_string(socket, 'GET ' + ds_map_find_value(parsed, 'abs_path') + ' HTTP/1.1' + CRLF);
+
+    // "A client MUST include a Host header field in all HTTP/1.1 request
+    // messages."
+    // "A "host" without any trailing port information implies the default
+    // port for the service requested (e.g., "80" for an HTTP URL)."
+    if (ds_map_find_value(parsed, 'port') == 80)
+        write_string(socket, 'Host: ' + ds_map_find_value(parsed, 'host') + CRLF);
+    else
+        write_string(socket, 'Host: ' + ds_map_find_value(parsed, 'host')
+            + ':' + string(ds_map_find_value(parsed, 'port')) + CRLF);
+
+    // "An HTTP/1.1 server MAY assume that a HTTP/1.1 client intends to
+    // maintain a persistent connection unless a Connection header including
+    // the connection-token "close" was sent in the request."
+    write_string(socket, 'Connection: close' + CRLF);
+
+    // "If no Accept-Encoding field is present in a request, the server MAY
+    // assume that the client will accept any content coding."
+    write_string(socket, 'Accept-Encoding:' + CRLF);
+    
+    // If headers specified
+    if (headers != -1)
+    {
+        var key;
+        // Iterate over headers map
+        for (key = ds_map_find_first(headers); is_string(key); key = ds_map_find_next(headers, key))
+        {
+            write_string(socket, key + ': ' + ds_map_find_value(headers, key) + CRLF);
+        }
+    }
+    
+    // Send extra CRLF to terminate request
+    write_string(socket, CRLF);
+    
+    socket_send(socket);
+
+    ds_map_destroy(parsed);
+}
+
+#define __http_parse_header
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Internal function - parses header
+// real __http_parse_header(string linebuf, real line)
+// Returns false if it errored (caller should return and destroy)
+
+var linebuf, line;
+linebuf = argument0;
+line = argument1;
+
+// "HTTP/1.1 header field values can be folded onto multiple lines if the
+// continuation line begins with a space or horizontal tab."
+if ((string_char_at(linebuf, 1) == ' ' or ord(string_char_at(linebuf, 1)) == 9))
+{
+    if (line == 1)
+    {
+        errored = true;
+        error = "First header line of response can't be a continuation, right?";
+        return false;
+    }
+    headerValue = ds_map_find_value(responseHeaders, string_lower(headerName))
+        + string_copy(linebuf, 2, string_length(linebuf) - 1);
+}
+// "Each header field consists
+// of a name followed by a colon (":") and the field value. Field names
+// are case-insensitive. The field value MAY be preceded by any amount
+// of LWS, though a single SP is preferred."
+else
+{
+    var colonPos;
+    colonPos = string_pos(':', linebuf);
+    if (colonPos == 0)
+    {
+        errored = true;
+        error = "No colon in a header line of response";
+        return false;
+    }
+    headerName = string_copy(linebuf, 1, colonPos - 1);
+    headerValue = string_copy(linebuf, colonPos + 1, string_length(linebuf) - colonPos);
+    // "The field-content does not include any leading or trailing LWS:
+    // linear white space occurring before the first non-whitespace
+    // character of the field-value or after the last non-whitespace
+    // character of the field-value. Such leading or trailing LWS MAY be
+    // removed without changing the semantics of the field value."
+    while (string_char_at(headerValue, 1) == ' ' or ord(string_char_at(headerValue, 1)) == 9)
+        headerValue = string_copy(headerValue, 2, string_length(headerValue) - 1);
+}
+
+ds_map_add(responseHeaders, string_lower(headerName), headerValue);
+
+if (string_lower(headerName) == 'content-length')
+{
+    responseBodySize = real(headerValue);
+    responseBodyProgress = 0;
+}
+
+return true;
+
+#define __http_client_step
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Steps the HTTP client (needs to be called each step or so)
+
+var client;
+client = argument0;
+
+with (client)
+{
+    if (errored)
+        exit;
+    
+    // Socket error
+    if (socket_has_error(socket))
+    {
+        errored = true;
+        error = "Socket error: " + socket_error(socket);
+        return __http_client_destroy();
+    }
+    
+    var available;
+    available = tcp_receive_available(socket);
+    
+    switch (state)
+    {
+    // Receiving lines
+    case 0:
+        if (!available && tcp_eof(socket))
+        {
+            errored = true;
+            error = "Unexpected EOF when receiving headers/status code";
+            return __http_client_destroy();
+        }
+    
+        var bytesRead, c;
+        for (bytesRead = 1; bytesRead <= available; bytesRead += 1)
+        {
+            c = read_string(socket, 1);
+            // Reached end of line
+            // "HTTP/1.1 defines the sequence CR LF as the end-of-line marker for all
+            // protocol elements except the entity-body (see appendix 19.3 for
+            // tolerant applications)."
+            if (c == LF and string_char_at(linebuf, string_length(linebuf)) == CR)
+            {
+                // Strip trailing CR
+                linebuf = string_copy(linebuf, 1, string_length(linebuf) - 1);
+                // First line - status code
+                if (line == 0)
+                {
+                    // "The first line of a Response message is the Status-Line, consisting
+                    // of the protocol version followed by a numeric status code and its
+                    // associated textual phrase, with each element separated by SP
+                    // characters. No CR or LF is allowed except in the final CRLF sequence."
+                    var httpVer, spacePos;
+                    spacePos = string_pos(' ', linebuf);
+                    if (spacePos == 0)
+                    {
+                        errored = true;
+                        error = "No space in first line of response";
+                        return __http_client_destroy();
+                    }
+                    httpVer = string_copy(linebuf, 1, spacePos);
+                    linebuf = string_copy(linebuf, spacePos + 1, string_length(linebuf) - spacePos);
+    
+                    spacePos = string_pos(' ', linebuf);
+                    if (spacePos == 0)
+                    {
+                        errored = true;
+                        error = "No second space in first line of response";
+                        return __http_client_destroy();
+                    }
+                    statusCode = real(string_copy(linebuf, 1, spacePos));
+                    reasonPhrase = string_copy(linebuf, spacePos + 1, string_length(linebuf) - spacePos);
+                }
+                // Other line
+                else
+                {
+                    // Blank line, end of response headers
+                    if (linebuf == '')
+                    {
+                        state = 1;
+                        // write remainder
+                        write_buffer_part(responseBody, socket, available - bytesRead);
+                        responseBodyProgress = available - bytesRead;
+                        break;
+                    }
+                    // Header
+                    else
+                    {
+                        if (!__http_parse_header(linebuf, line))
+                            return __http_client_destroy();
+                    }
+                }
+    
+                linebuf = '';
+                line += 1;
+            }
+            else
+                linebuf += c;
+        }
+        break;
+    // Receiving response body
+    case 1:
+        write_buffer(responseBody, socket);
+        responseBodyProgress += available;
+        if (tcp_eof(socket))
+        {
+            if (ds_map_exists(responseHeaders, 'transfer-encoding'))
+            {
+                if (ds_map_find_value(responseHeaders, 'transfer-encoding') == 'chunked')
+                {
+                    // Chunked transfer, let's decode it
+                    var actualResponseBody, actualResponseSize;
+                    actualResponseBody = buffer_create();
+                    actualResponseBodySize = 0;
+
+                    // Parse chunks
+                    // chunk          = chunk-size [ chunk-extension ] CRLF
+                    //                  chunk-data CRLF
+                    // chunk-size     = 1*HEX
+                    while (buffer_bytes_left(responseBody))
+                    {
+                        var chunkSize, c;
+                        chunkSize = '';
+                        
+                        // Read chunk size byte by byte 
+                        while (buffer_bytes_left(responseBody))
+                        {
+                            c = read_string(responseBody, 1);
+                            if (c == CR or c == ';')
+                                break;
+                            else
+                                chunkSize += c;
+                        }
+                        
+                        // We found a semicolon - beginning of chunk-extension
+                        if (c == ';')
+                        {
+                            // skip all extension stuff
+                            while (buffer_bytes_left(responseBody) && c != CR)
+                            {
+                                c = read_string(responseBody, 1);
+                            }
+                        }
+                        // Reached end of header
+                        if (c == CR)
+                        {
+                            c += read_string(responseBody, 1);
+                            // Doesn't end in CRLF
+                            if (c != CRLF)
+                            {
+                                errored = true;
+                                error = 'header of chunk in chunked transfer did not end in CRLF';
+                                buffer_destroy(actualResponseBody);
+                                return __http_client_destroy();
+                            }
+                            // chunk-size is empty - something's up!
+                            if (chunkSize == '')
+                            {
+                                errored = true;
+                                error = 'empty chunk-size in a chunked transfer';
+                                buffer_destroy(actualResponseBody);
+                                return __http_client_destroy();
+                            }
+                            chunkSize = __http_parse_hex(chunkSize);
+                            // Parsing of size failed - not hex?
+                            if (chunkSize == -1)
+                            {
+                                errored = true;
+                                error = 'chunk-size was not hexadecimal in a chunked transfer';
+                                buffer_destroy(actualResponseBody);
+                                return __http_client_destroy();
+                            }
+                            // Is the chunk bigger than the remaining response?
+                            if (chunkSize + 2 > buffer_bytes_left(responseBody))
+                            {
+                                errored = true;
+                                error = 'chunk-size was greater than remaining data in a chunked transfer';
+                                buffer_destroy(actualResponseBody);
+                                return __http_client_destroy();
+                            }
+                            // OK, everything's good, read the chunk
+                            write_buffer_part(actualResponseBody, responseBody, chunkSize);
+                            actualResponseBodySize += chunkSize;
+                            // Check for CRLF
+                            if (read_string(responseBody, 2) != CRLF)
+                            {
+                                errored = true;
+                                error = 'chunk did not end in CRLF in a chunked transfer';
+                                return __http_client_destroy();
+                            }
+                        }
+                        else
+                        {
+                            errored = true;
+                            error = 'did not find CR after reading chunk header in a chunked transfer, Faucet HTTP bug?';
+                            return __http_client_destroy();
+                        }
+                        // if the chunk size is zero, then it was the last chunk
+                        if (chunkSize == 0
+                            // trailer headers will be present
+                            and ds_map_exists(responseHeaders, 'trailer'))
+                        {
+                            // Parse header lines
+                            var line;
+                            line = 1;
+                            while (buffer_bytes_left(responseBody))
+                            {
+                                var linebuf;
+                                linebuf = '';
+                                while (buffer_bytes_left(responseBody))
+                                {
+                                    c = read_string(responseBody, 1);
+                                    if (c != CR)
+                                        linebuf += c;
+                                    else
+                                        break;
+                                }
+                                c += read_string(responseBody, 1);
+                                if (c != CRLF)
+                                {
+                                    errored = true;
+                                    error = 'trailer header did not end in CRLF in a chunked transfer';
+                                    return __http_client_destroy();
+                                }
+                                if (!__http_parse_header(linebuf, line))
+                                    return __http_client_destroy();
+                                line += 1;
+                            }
+                        }
+                    }
+                    responseBodySize = actualResponseBodySize;
+                    buffer_destroy(responseBody);
+                    responseBody = actualResponseBody;
+                }
+                else
+                {
+                    errored = true;
+                    error = 'Unsupported Transfer-Encoding: "' + ds_map_find_value(responseHaders, 'transfer-encoding') + '"';
+                    return __http_client_destroy();
+                }
+            }
+            else if (responseBodySize != -1)
+            {
+                if (responseBodyProgress < responseBodySize)
+                {
+                    errored = true;
+                    error = "Unexpected EOF, response body size is less than expected";
+                    return __http_client_destroy();
+                }
+            }
+            // 301 Moved Permanently/302 Found/303 See Other/307 Moved Temporarily
+            if (statusCode == 301 or statusCode == 302 or statusCode == 303 or statusCode == 307)
+            {
+                if (ds_map_exists(responseHeaders, 'location'))
+                {
+                    var location, resolved;
+                    location = ds_map_find_value(responseHeaders, 'location');
+                    resolved = __http_resolve_url(requestUrl, location);
+                    // Resolving URL didn't fail and it's http://
+                    if (resolved != '' and string_copy(resolved, 1, 7) == 'http://')
+                    {
+                        // Restart request
+                        __http_client_destroy();
+                        __http_prepare_request(client, resolved, requestHeaders);
+                    }
+                    else
+                    {
+                        errored = true;
+                        error = "301, 302, 303 or 307 response with invalid or unsupported Location URL ('" + location +  "') - can't redirect";
+                        return __http_client_destroy();
+                    }
+                    exit;
+                }
+                else
+                {
+                    errored = true;
+                    error = "301, 302, 303 or 307 response without Location header - can't redirect";
+                    return __http_client_destroy();
+                }
+            }
+            else
+                state = 2;
+        }
+        break;
+    // Done.
+    case 2:
+        break;
+    }
+}
+
+#define __http_client_destroy
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Clears up contents of an httpClient prior to destruction or after error
+
+if (!destroyed) {
+    socket_destroy(socket);
+    buffer_destroy(responseBody);
+    ds_map_destroy(responseHeaders);
+}
+destroyed = true;
+
+#define http_new_get
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Makes a GET HTTP request
+// real http_new_get(string url)
+
+// url - URL to send GET request to
+
+// Return value is an HttpClient instance that can be passed to
+// fct_http_request_status etc.
+// (errors on failure to parse URL)
+
+var url, client;
+
+url = argument0;
+
+if (!variable_global_exists('__HttpClient'))
+    __http_init();
+
+client = instance_create(0, 0, global.__HttpClient);
+__http_prepare_request(client, url, -1);
+return client;
+
+#define http_new_get_ex
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Makes a GET HTTP request with custom headers
+// real http_new_get_ex(string url, real headers)
+
+// url - URL to send GET request to
+// headers - ds_map of extra headers to send
+
+// Return value is an HttpClient instance that can be passed to
+// fct_http_request_status etc.
+// (errors on failure to parse URL)
+
+var url, headers, client;
+
+url = argument0;
+headers = argument1;
+
+if (!variable_global_exists('__HttpClient'))
+    __http_init();
+
+client = instance_create(0, 0, global.__HttpClient);
+__http_prepare_request(client, url, headers);
+return client;
+
+#define http_step
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Steps the HTTP client. This is what makes everything actually happen.
+// Call it each step. Returns whether or not the request has finished.
+// real http_step(real client)
+
+// client - HttpClient object
+
+// Return value is either:
+// 0 - In progress
+// 1 - Done or Errored
+
+// Example usage:
+// req = http_new_get("http://example.com/x.txt");
+// while (http_step(req)) {}
+// if (http_status_code(req) != 200) {
+//     // Errored!
+// } else {
+//     // Hasn't errored, do stuff here.
+// }
+
+var client;
+client = argument0;
+
+__http_client_step(client);
+
+if (client.errored || client.state == 2)
+    return 1;
+else
+    return 0;
+
+#define http_status_code
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Gets the status code
+// real http_status_code(real client)
+
+// client - HttpClient object
+
+// Return value is either:
+// * 0, if the request has not yet finished
+// * a negative value, if there was an internal Faucet HTTP error
+// * a positive value, the status code of the HTTP request
+
+// "The Status-Code element is a 3-digit integer result code of the
+// attempt to understand and satisfy the request. These codes are fully
+// defined in section 10. The Reason-Phrase is intended to give a short
+// textual description of the Status-Code. The Status-Code is intended
+// for use by automata and the Reason-Phrase is intended for the human
+// user. The client is not required to examine or display the Reason-
+// Phrase."
+
+// See also: http_reason_phrase, gets the Reason-Phrase
+
+var client;
+client = argument0;
+
+if (client.errored)
+    return -1;
+else if (client.state == 2)
+    return client.statusCode;
+else
+    return 0;
+
+#define http_reason_phrase
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Gets the reason phrase
+// string http_reason_phrase(real client)
+
+// client - HttpClient object
+// Return value is either:
+// * "", if the request has not yet finished
+// * an internal Faucet HTTP error message, if there was one
+// * the reason phrase of the HTTP request
+
+// "The Status-Code element is a 3-digit integer result code of the
+// attempt to understand and satisfy the request. These codes are fully
+// defined in section 10. The Reason-Phrase is intended to give a short
+// textual description of the Status-Code. The Status-Code is intended
+// for use by automata and the Reason-Phrase is intended for the human
+// user. The client is not required to examine or display the Reason-
+// Phrase."
+
+// See also: http_status_code, gets the Status-Code
+
+var client;
+client = argument0;
+
+if (client.errored)
+    return client.error;
+else if (client.state == 2)
+    return client.reasonPhrase;
+else
+    return "";
+
+#define http_response_body
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Gets the response body returned by an HTTP request as a buffer
+// real http_response_body(real client)
+
+// client - HttpClient object
+
+// Return value is a buffer if client hasn't errored and is finished
+
+var client;
+client = argument0;
+
+return client.responseBody;
+
+#define http_response_body_size
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Gets the size of response body returned by an HTTP request
+// real http_response_body_size(real client)
+
+// client - HttpClient object
+
+// Return value is the size in bytes, or -1 if we don't know or don't know yet
+
+// Call this each time you use the size - it may have changed in the case of redirect
+
+var client;
+client = argument0;
+
+return client.responseBodySize;
+
+#define http_response_body_progress
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Gets the size of response body returned by an HTTP request which is so far downloaded 
+// real http_response_body_progress(real client)
+
+// client - HttpClient object
+
+// Return value is the size in bytes, or -1 if we haven't started yet or client has errored
+
+var client;
+client = argument0;
+
+return client.responseBodyProgress;
+
+#define http_response_headers
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Gets the response headers returned by an HTTP request as a ds_map
+// real http_response_headers(real client)
+
+// client - HttpClient object
+
+// Return value is a ds_map if client hasn't errored and is finished
+
+// All headers will have lowercase keys
+// The ds_map is owned by the HttpClient, do not use ds_map_destroy() yourself
+// Call when the request has finished - otherwise may be incomplete or missing
+
+var client;
+client = argument0;
+
+return client.responseHeaders;
+
+#define http_destroy
+// ***
+// This function forms part of Faucet HTTP v1.0
+// https://github.com/TazeTSchnitzel/Faucet-HTTP-Extension
+// 
+// Copyright (c) 2013-2014, Andrea Faulds <ajf@ajf.me>
+// 
+// Permission to use, copy, modify, and/or distribute this software for any
+// purpose with or without fee is hereby granted, provided that the above
+// copyright notice and this permission notice appear in all copies.
+// 
+// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+// ***
+
+// Cleans up HttpClient
+// void http_destroy(real client)
+
+// client - HttpClient object
+
+var client;
+client = argument0;
+
+with (client)
+{
+    __http_client_destroy();
+    instance_destroy();
+}
+
diff --git a/samples/Game Maker Language/game_init.gml b/samples/Game Maker Language/game_init.gml
new file mode 100644
index 00000000..4f5012d2
--- /dev/null
+++ b/samples/Game Maker Language/game_init.gml	
@@ -0,0 +1,484 @@
+/*
+    Originally from /Source/gg2/Scripts/game_init.gml in Gang Garrison 2
+
+    Copyright (C) 2008-2013 Faucet Software
+    http://www.ganggarrison.com
+
+    This program is free software; 
+    you can redistribute it and/or modify it under the terms of the GNU General Public License
+    as published by the Free Software Foundation; either version 3 of the License, or (at your option)
+    any later version.
+    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
+    without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+    See the GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License along with this program; if not,
+    see <http://www.gnu.org/licenses>.
+
+    Additional permission under GNU GPL version 3 section 7
+    If you modify this Program, or any covered work, by linking or combining it with the Game Maker runtime library, 
+    the 39dll library/extension, Hobbel's Download Manager DLL, or modified versions of these libraries,
+    the licensors of this Program grant you additional permission to convey the resulting work.
+*/
+
+// Returns true if the game is successfully initialized, false if there was an error and we should quit.
+{
+    instance_create(0,0,RoomChangeObserver);
+    set_little_endian_global(true);
+    if file_exists("game_errors.log") file_delete("game_errors.log");
+    if file_exists("last_plugin.log") file_delete("last_plugin.log");
+    
+    // Delete old left-over files created by the updater
+    var backupFilename;
+    backupFilename = file_find_first("gg2-old.delete.me.*", 0);
+    while(backupFilename != "")
+    {
+        file_delete(backupFilename);
+        backupFilename = file_find_next();
+    }
+    file_find_close();
+    
+    var customMapRotationFile, restart;
+    restart = false;
+
+    //import wav files for music
+    global.MenuMusic=sound_add(choose("Music/menumusic1.wav","Music/menumusic2.wav","Music/menumusic3.wav","Music/menumusic4.wav","Music/menumusic5.wav","Music/menumusic6.wav"), 1, true);
+    global.IngameMusic=sound_add("Music/ingamemusic.wav", 1, true);
+    global.FaucetMusic=sound_add("Music/faucetmusic.wav", 1, true);
+    if(global.MenuMusic != -1)
+        sound_volume(global.MenuMusic, 0.8);
+    if(global.IngameMusic != -1)
+        sound_volume(global.IngameMusic, 0.8);
+    if(global.FaucetMusic != -1)
+        sound_volume(global.FaucetMusic, 0.8);
+        
+    global.sendBuffer = buffer_create();
+    global.tempBuffer = buffer_create();
+    global.HudCheck = false;
+    global.map_rotation = ds_list_create();
+    
+    global.CustomMapCollisionSprite = -1;
+    
+    window_set_region_scale(-1, false);
+    
+    ini_open("gg2.ini");
+    global.playerName = ini_read_string("Settings", "PlayerName", "Player");
+    if string_count("#",global.playerName) > 0 global.playerName = "Player";
+    global.playerName = string_copy(global.playerName, 0, min(string_length(global.playerName), MAX_PLAYERNAME_LENGTH));
+    global.fullscreen = ini_read_real("Settings", "Fullscreen", 0);
+    global.useLobbyServer = ini_read_real("Settings", "UseLobby", 1);
+    global.hostingPort = ini_read_real("Settings", "HostingPort", 8190);
+    global.music = ini_read_real("Settings", "Music", ini_read_real("Settings", "IngameMusic", MUSIC_BOTH));
+    global.playerLimit = ini_read_real("Settings", "PlayerLimit", 10);
+    //thy playerlimit shalt not exceed 48!
+    if (global.playerLimit > 48)
+    {
+        if (global.dedicatedMode != 1)
+            show_message("Warning: Player Limit cannot exceed 48. It has been set to 48");
+        global.playerLimit = 48;
+        ini_write_real("Settings", "PlayerLimit", 48);
+    }
+    global.multiClientLimit = ini_read_real("Settings", "MultiClientLimit", 3);
+    global.particles =  ini_read_real("Settings", "Particles", PARTICLES_NORMAL);
+    global.gibLevel = ini_read_real("Settings", "Gib Level", 3);
+    global.killCam = ini_read_real("Settings", "Kill Cam", 1);
+    global.monitorSync = ini_read_real("Settings", "Monitor Sync", 0);
+    if global.monitorSync == 1 set_synchronization(true);
+    else set_synchronization(false);
+    global.medicRadar = ini_read_real("Settings", "Healer Radar", 1);
+    global.showHealer = ini_read_real("Settings", "Show Healer", 1);
+    global.showHealing = ini_read_real("Settings", "Show Healing", 1);
+    global.showHealthBar = ini_read_real("Settings", "Show Healthbar", 0);
+    global.showTeammateStats = ini_read_real("Settings", "Show Extra Teammate Stats", 0);
+    global.serverPluginsPrompt = ini_read_real("Settings", "ServerPluginsPrompt", 1);
+    global.restartPrompt = ini_read_real("Settings", "RestartPrompt", 1);
+    //user HUD settings
+    global.timerPos=ini_read_real("Settings","Timer Position", 0)
+    global.killLogPos=ini_read_real("Settings","Kill Log Position", 0)
+    global.kothHudPos=ini_read_real("Settings","KoTH HUD Position", 0)
+    global.clientPassword = "";
+    // for admin menu
+    customMapRotationFile = ini_read_string("Server", "MapRotation", "");
+    global.shuffleRotation = ini_read_real("Server", "ShuffleRotation", 1);
+    global.timeLimitMins = max(1, min(255, ini_read_real("Server", "Time Limit", 15)));
+    global.serverPassword = ini_read_string("Server", "Password", "");
+    global.mapRotationFile = customMapRotationFile;
+    global.dedicatedMode = ini_read_real("Server", "Dedicated", 0);
+    global.serverName = ini_read_string("Server", "ServerName", "My Server");
+    global.welcomeMessage = ini_read_string("Server", "WelcomeMessage", "");
+    global.caplimit = max(1, min(255, ini_read_real("Server", "CapLimit", 5)));
+    global.caplimitBkup = global.caplimit;
+    global.autobalance = ini_read_real("Server", "AutoBalance",1);
+    global.Server_RespawntimeSec = ini_read_real("Server", "Respawn Time", 5);
+    global.rewardKey = unhex(ini_read_string("Haxxy", "RewardKey", ""));
+    global.rewardId = ini_read_string("Haxxy", "RewardId", "");
+    global.mapdownloadLimitBps = ini_read_real("Server", "Total bandwidth limit for map downloads in bytes per second", 50000);
+    global.updaterBetaChannel = ini_read_real("General", "UpdaterBetaChannel", isBetaVersion());
+    global.attemptPortForward = ini_read_real("Server", "Attempt UPnP Forwarding", 0); 
+    global.serverPluginList = ini_read_string("Server", "ServerPluginList", "");
+    global.serverPluginsRequired = ini_read_real("Server", "ServerPluginsRequired", 0);
+    if (string_length(global.serverPluginList) > 254) {
+        show_message("Error: Server plugin list cannot exceed 254 characters");
+        return false;
+    }
+    var CrosshairFilename, CrosshairRemoveBG;
+    CrosshairFilename = ini_read_string("Settings", "CrosshairFilename", "");
+    CrosshairRemoveBG = ini_read_real("Settings", "CrosshairRemoveBG", 1);
+    global.queueJumping = ini_read_real("Settings", "Queued Jumping", 0);
+
+    global.backgroundHash = ini_read_string("Background", "BackgroundHash", "default");
+    global.backgroundTitle = ini_read_string("Background", "BackgroundTitle", "");
+    global.backgroundURL = ini_read_string("Background", "BackgroundURL", "");
+    global.backgroundShowVersion = ini_read_real("Background", "BackgroundShowVersion", true);
+    
+    readClasslimitsFromIni();
+
+    global.currentMapArea=1;
+    global.totalMapAreas=1;
+    global.setupTimer=1800;
+    global.joinedServerName="";
+    global.serverPluginsInUse=false;
+    // Create plugin packet maps
+    global.pluginPacketBuffers = ds_map_create();
+    global.pluginPacketPlayers = ds_map_create();
+        
+    ini_write_string("Settings", "PlayerName", global.playerName);
+    ini_write_real("Settings", "Fullscreen", global.fullscreen);
+    ini_write_real("Settings", "UseLobby", global.useLobbyServer);
+    ini_write_real("Settings", "HostingPort", global.hostingPort);
+    ini_key_delete("Settings", "IngameMusic");
+    ini_write_real("Settings", "Music", global.music);
+    ini_write_real("Settings", "PlayerLimit", global.playerLimit);
+    ini_write_real("Settings", "MultiClientLimit", global.multiClientLimit);
+    ini_write_real("Settings", "Particles", global.particles);
+    ini_write_real("Settings", "Gib Level", global.gibLevel);
+    ini_write_real("Settings", "Kill Cam", global.killCam);
+    ini_write_real("Settings", "Monitor Sync", global.monitorSync);
+    ini_write_real("Settings", "Healer Radar", global.medicRadar);
+    ini_write_real("Settings", "Show Healer", global.showHealer);
+    ini_write_real("Settings", "Show Healing", global.showHealing);
+    ini_write_real("Settings", "Show Healthbar", global.showHealthBar);
+    ini_write_real("Settings", "Show Extra Teammate Stats", global.showTeammateStats);
+    ini_write_real("Settings", "Timer Position", global.timerPos);
+    ini_write_real("Settings", "Kill Log Position", global.killLogPos);
+    ini_write_real("Settings", "KoTH HUD Position", global.kothHudPos);
+    ini_write_real("Settings", "ServerPluginsPrompt", global.serverPluginsPrompt);
+    ini_write_real("Settings", "RestartPrompt", global.restartPrompt);
+    ini_write_string("Server", "MapRotation", customMapRotationFile);
+    ini_write_real("Server", "ShuffleRotation", global.shuffleRotation);
+    ini_write_real("Server", "Dedicated", global.dedicatedMode);
+    ini_write_string("Server", "ServerName", global.serverName);
+    ini_write_string("Server", "WelcomeMessage", global.welcomeMessage);
+    ini_write_real("Server", "CapLimit", global.caplimit);
+    ini_write_real("Server", "AutoBalance", global.autobalance);
+    ini_write_real("Server", "Respawn Time", global.Server_RespawntimeSec);
+    ini_write_real("Server", "Total bandwidth limit for map downloads in bytes per second", global.mapdownloadLimitBps);
+    ini_write_real("Server", "Time Limit", global.timeLimitMins);
+    ini_write_string("Server", "Password", global.serverPassword);
+    ini_write_real("General", "UpdaterBetaChannel", global.updaterBetaChannel);
+    ini_write_real("Server", "Attempt UPnP Forwarding", global.attemptPortForward); 
+    ini_write_string("Server", "ServerPluginList", global.serverPluginList); 
+    ini_write_real("Server", "ServerPluginsRequired", global.serverPluginsRequired); 
+    ini_write_string("Settings", "CrosshairFilename", CrosshairFilename);
+    ini_write_real("Settings", "CrosshairRemoveBG", CrosshairRemoveBG);
+    ini_write_real("Settings", "Queued Jumping", global.queueJumping);
+
+    ini_write_string("Background", "BackgroundHash", global.backgroundHash);
+    ini_write_string("Background", "BackgroundTitle", global.backgroundTitle);
+    ini_write_string("Background", "BackgroundURL", global.backgroundURL);
+    ini_write_real("Background", "BackgroundShowVersion", global.backgroundShowVersion);
+    
+    ini_write_real("Classlimits", "Scout", global.classlimits[CLASS_SCOUT])
+    ini_write_real("Classlimits", "Pyro", global.classlimits[CLASS_PYRO])
+    ini_write_real("Classlimits", "Soldier", global.classlimits[CLASS_SOLDIER])
+    ini_write_real("Classlimits", "Heavy", global.classlimits[CLASS_HEAVY])
+    ini_write_real("Classlimits", "Demoman", global.classlimits[CLASS_DEMOMAN])
+    ini_write_real("Classlimits", "Medic", global.classlimits[CLASS_MEDIC])
+    ini_write_real("Classlimits", "Engineer", global.classlimits[CLASS_ENGINEER])
+    ini_write_real("Classlimits", "Spy", global.classlimits[CLASS_SPY])
+    ini_write_real("Classlimits", "Sniper", global.classlimits[CLASS_SNIPER])
+    ini_write_real("Classlimits", "Quote", global.classlimits[CLASS_QUOTE])
+
+    //screw the 0 index we will start with 1
+    //map_truefort 
+    maps[1] = ini_read_real("Maps", "ctf_truefort", 1);
+    //map_2dfort 
+    maps[2] = ini_read_real("Maps", "ctf_2dfort", 2);
+    //map_conflict 
+    maps[3] = ini_read_real("Maps", "ctf_conflict", 3);
+    //map_classicwell 
+    maps[4] = ini_read_real("Maps", "ctf_classicwell", 4);
+    //map_waterway 
+    maps[5] = ini_read_real("Maps", "ctf_waterway", 5);
+    //map_orange 
+    maps[6] = ini_read_real("Maps", "ctf_orange", 6);
+    //map_dirtbowl
+    maps[7] = ini_read_real("Maps", "cp_dirtbowl", 7);
+    //map_egypt
+    maps[8] = ini_read_real("Maps", "cp_egypt", 8);
+    //arena_montane
+    maps[9] = ini_read_real("Maps", "arena_montane", 9);
+    //arena_lumberyard
+    maps[10] = ini_read_real("Maps", "arena_lumberyard", 10);
+    //gen_destroy
+    maps[11] = ini_read_real("Maps", "gen_destroy", 11);
+    //koth_valley
+    maps[12] = ini_read_real("Maps", "koth_valley", 12);
+    //koth_corinth
+    maps[13] = ini_read_real("Maps", "koth_corinth", 13);
+    //koth_harvest
+    maps[14] = ini_read_real("Maps", "koth_harvest", 14);
+    //dkoth_atalia
+    maps[15] = ini_read_real("Maps", "dkoth_atalia", 15);
+    //dkoth_sixties
+    maps[16] = ini_read_real("Maps", "dkoth_sixties", 16);
+    
+    //Server respawn time calculator. Converts each second to a frame. (read: multiply by 30 :hehe:)
+    if (global.Server_RespawntimeSec == 0)
+    {
+        global.Server_Respawntime = 1;
+    }    
+    else
+    {
+        global.Server_Respawntime = global.Server_RespawntimeSec * 30;    
+    }    
+    
+    // I have to include this, or the client'll complain about an unknown variable.
+    global.mapchanging = false;
+    
+    ini_write_real("Maps", "ctf_truefort", maps[1]);
+    ini_write_real("Maps", "ctf_2dfort", maps[2]);
+    ini_write_real("Maps", "ctf_conflict", maps[3]);
+    ini_write_real("Maps", "ctf_classicwell", maps[4]);
+    ini_write_real("Maps", "ctf_waterway", maps[5]);
+    ini_write_real("Maps", "ctf_orange", maps[6]);
+    ini_write_real("Maps", "cp_dirtbowl", maps[7]);
+    ini_write_real("Maps", "cp_egypt", maps[8]);
+    ini_write_real("Maps", "arena_montane", maps[9]);
+    ini_write_real("Maps", "arena_lumberyard", maps[10]);
+    ini_write_real("Maps", "gen_destroy", maps[11]);
+    ini_write_real("Maps", "koth_valley", maps[12]);
+    ini_write_real("Maps", "koth_corinth", maps[13]);
+    ini_write_real("Maps", "koth_harvest", maps[14]);
+    ini_write_real("Maps", "dkoth_atalia", maps[15]);
+    ini_write_real("Maps", "dkoth_sixties", maps[16]);
+
+    ini_close();
+    
+    // parse the protocol version UUID for later use
+    global.protocolUuid = buffer_create();
+    parseUuid(PROTOCOL_UUID, global.protocolUuid);
+
+    global.gg2lobbyId = buffer_create();
+    parseUuid(GG2_LOBBY_UUID, global.gg2lobbyId);
+
+    // Create abbreviations array for rewards use
+    initRewards()
+    
+var a, IPRaw, portRaw;
+doubleCheck=0;
+global.launchMap = "";
+
+    for(a = 1; a <= parameter_count(); a += 1) 
+    {
+        if (parameter_string(a) == "-dedicated")
+        {
+            global.dedicatedMode = 1;
+        }
+        else if (parameter_string(a) == "-restart")
+        {
+            restart = true;
+        }
+        else if (parameter_string(a) == "-server")
+        {
+            IPRaw = parameter_string(a+1);
+            if (doubleCheck == 1)
+            {
+                doubleCheck = 2;
+            }
+            else
+            {
+                doubleCheck = 1;
+            }
+        }
+        else if (parameter_string(a) == "-port")
+        {
+            portRaw = parameter_string(a+1);
+            if (doubleCheck == 1)
+            {
+                doubleCheck = 2;
+            }
+            else
+            {
+                doubleCheck = 1;
+            }
+        }
+        else if (parameter_string(a) == "-map")
+        {
+            global.launchMap = parameter_string(a+1);
+            global.dedicatedMode = 1;
+        }
+    }
+    
+    if (doubleCheck == 2)
+    {
+        global.serverPort = real(portRaw);
+        global.serverIP = IPRaw;
+        global.isHost = false;
+        instance_create(0,0,Client);
+    }   
+    
+    global.customMapdesginated = 0;    
+    
+    // if the user defined a valid map rotation file, then load from there
+
+    if(customMapRotationFile != "" && file_exists(customMapRotationFile) && global.launchMap == "") {
+        global.customMapdesginated = 1;
+        var fileHandle, i, mapname;
+        fileHandle = file_text_open_read(customMapRotationFile);
+        for(i = 1; !file_text_eof(fileHandle); i += 1) {
+            mapname = file_text_read_string(fileHandle);
+            // remove leading whitespace from the string
+            while(string_char_at(mapname, 0) == " " || string_char_at(mapname, 0) == chr(9)) { // while it starts with a space or tab
+              mapname = string_delete(mapname, 0, 1); // delete that space or tab
+            }
+            if(mapname != "" && string_char_at(mapname, 0) != "#") { // if it's not blank and it's not a comment (starting with #)
+                ds_list_add(global.map_rotation, mapname);
+            }
+            file_text_readln(fileHandle);
+        }
+        file_text_close(fileHandle);
+    }
+    
+     else if (global.launchMap != "") && (global.dedicatedMode == 1)
+        {  
+        ds_list_add(global.map_rotation, global.launchMap);
+        }
+    
+     else { // else load from the ini file Maps section
+        //Set up the map rotation stuff
+        var i, sort_list;
+        sort_list = ds_list_create();
+        for(i=1; i <= 16; i += 1) {
+            if(maps[i] != 0) ds_list_add(sort_list, ((100*maps[i])+i));
+        }
+        ds_list_sort(sort_list, 1);
+        
+        // translate the numbers back into the names they represent
+        for(i=0; i < ds_list_size(sort_list); i += 1) {
+            switch(ds_list_find_value(sort_list, i) mod 100) {
+                case 1:
+                    ds_list_add(global.map_rotation, "ctf_truefort");
+                break;
+                case 2:
+                    ds_list_add(global.map_rotation, "ctf_2dfort");
+                break;
+                case 3:
+                    ds_list_add(global.map_rotation, "ctf_conflict");
+                break;
+                case 4:
+                    ds_list_add(global.map_rotation, "ctf_classicwell");
+                break;
+                case 5:
+                    ds_list_add(global.map_rotation, "ctf_waterway");
+                break;
+                case 6:
+                    ds_list_add(global.map_rotation, "ctf_orange");
+                break;
+                case 7:
+                    ds_list_add(global.map_rotation, "cp_dirtbowl");
+                break;
+                case 8:
+                    ds_list_add(global.map_rotation, "cp_egypt");
+                break;
+                case 9:
+                    ds_list_add(global.map_rotation, "arena_montane");
+                break;
+                case 10:
+                    ds_list_add(global.map_rotation, "arena_lumberyard");
+                break;
+                case 11:
+                    ds_list_add(global.map_rotation, "gen_destroy");
+                break;
+                case 12:
+                    ds_list_add(global.map_rotation, "koth_valley");
+                break;
+                case 13:
+                    ds_list_add(global.map_rotation, "koth_corinth");
+                break;
+                case 14:
+                    ds_list_add(global.map_rotation, "koth_harvest");
+                break;
+                case 15:
+                    ds_list_add(global.map_rotation, "dkoth_atalia");
+                break;
+                case 16:
+                    ds_list_add(global.map_rotation, "dkoth_sixties");
+                break;
+                    
+            }
+        }
+        ds_list_destroy(sort_list);
+    }
+    
+    window_set_fullscreen(global.fullscreen);
+    
+    global.gg2Font = font_add_sprite(gg2FontS,ord("!"),false,0);
+    global.countFont = font_add_sprite(countFontS, ord("0"),false,2);
+    draw_set_font(global.gg2Font);
+    cursor_sprite = CrosshairS;
+    
+    if(!directory_exists(working_directory + "\Maps")) directory_create(working_directory + "\Maps");
+    
+    instance_create(0, 0, AudioControl);
+    instance_create(0, 0, SSControl);
+    
+    // custom dialog box graphics
+    message_background(popupBackgroundB);
+    message_button(popupButtonS);
+    message_text_font("Century",9,c_white,1);
+    message_button_font("Century",9,c_white,1);
+    message_input_font("Century",9,c_white,0);
+    
+    //Key Mapping
+    ini_open("controls.gg2");
+    global.jump = ini_read_real("Controls", "jump", ord("W"));
+    global.down = ini_read_real("Controls", "down", ord("S"));
+    global.left = ini_read_real("Controls", "left", ord("A"));
+    global.right = ini_read_real("Controls", "right", ord("D"));
+    global.attack = ini_read_real("Controls", "attack", MOUSE_LEFT);
+    global.special = ini_read_real("Controls", "special", MOUSE_RIGHT);
+    global.taunt = ini_read_real("Controls", "taunt", ord("F"));
+    global.chat1 = ini_read_real("Controls", "chat1", ord("Z"));
+    global.chat2 = ini_read_real("Controls", "chat2", ord("X"));
+    global.chat3 = ini_read_real("Controls", "chat3", ord("C"));
+    global.medic = ini_read_real("Controls", "medic", ord("E"));
+    global.drop = ini_read_real("Controls", "drop", ord("B"));
+    global.changeTeam = ini_read_real("Controls", "changeTeam", ord("N"));
+    global.changeClass = ini_read_real("Controls", "changeClass", ord("M"));
+    global.showScores = ini_read_real("Controls", "showScores", vk_shift);
+    ini_close();
+    
+    calculateMonthAndDay();
+
+    if(!directory_exists(working_directory + "\Plugins")) directory_create(working_directory + "\Plugins");
+    loadplugins();
+    
+    /* Windows 8 is known to crash GM when more than three (?) sounds play at once
+     * We'll store the kernel version (Win8 is 6.2, Win7 is 6.1) and check it there.
+     ***/
+    registry_set_root(1); // HKLM
+    global.NTKernelVersion = real(registry_read_string_ext("\SOFTWARE\Microsoft\Windows NT\CurrentVersion\", "CurrentVersion")); // SIC
+
+    if (file_exists(CrosshairFilename))
+    {
+        sprite_replace(CrosshairS,CrosshairFilename,1,CrosshairRemoveBG,false,0,0);
+        sprite_set_offset(CrosshairS,sprite_get_width(CrosshairS)/2,sprite_get_height(CrosshairS)/2);
+    }
+    if(global.dedicatedMode == 1) {
+        AudioControlToggleMute();
+        room_goto_fix(Menu);
+    } else if(restart) {
+        room_goto_fix(Menu);
+    }
+    return true;
+}
diff --git a/samples/Game Maker Language/jsonion.gml b/samples/Game Maker Language/jsonion.gml
new file mode 100644
index 00000000..e4d2a6cb
--- /dev/null
+++ b/samples/Game Maker Language/jsonion.gml	
@@ -0,0 +1,1861 @@
+// Originally from /jsonion.gml in JSOnion
+// JSOnion v1.0.0d is licensed under the MIT licence. You may freely adapt and use this library in commercial and non-commercial projects.
+
+#define __jso_gmt_tuple
+{
+
+  /**
+  tuple(>element_0<, >element_1<, ..., >element_n<): Return an n-tuple
+  @author: GameGeisha
+  @version: 1.2 (GMTuple)
+  */
+
+  //Position, address table and data
+  var pos, addr_table, data;
+  pos = 6*argument_count+4;
+  addr_table = "";
+  data = "";
+  
+  //Build the tuple element-by-element
+  var i, ca, isstr, datastr;
+  for (i=0; i<argument_count; i+=1) {
+    //Check the argument's type
+    ca = argument[i];
+    isstr = is_string(ca);
+    if (isstr) { //Save strings as-is
+      datastr = ca;
+    }
+    else { //Save reals in scientific notation, 15 significant digits
+      datastr = __jso_gmt_numtostr(ca);
+    }
+    //Add entry in address table and data
+    addr_table += chr(isstr+$30)
+    addr_table += string_format(pos, 5, 0);
+    pos += string_length(datastr);
+    data += datastr;
+  }
+  
+  //Return the tuple, with size header character, address table and data
+  return string_format(argument_count, 3, 0)+addr_table+data;
+  
+}
+
+#define __jso_gmt_elem
+{
+
+  /**
+  elem(tuple_source, n): Return the <n>th element of <tuple_source>
+  @author: GameGeisha
+  @version: 1.2 (GMTuple)
+  */
+
+  //Capture arguments
+  var t, n, size;
+  t = argument0;
+  n = argument1;
+  size = __jso_gmt_size(t);
+  
+  //Search for the bounding positions for the <n>th element in the address table
+  var start, afterend, isstr;
+  isstr = ord(string_char_at(t, 4+6*n))-$30;
+  start = real(string_copy(t, 5+6*n, 5));
+  if (n < size-1) {
+    afterend = real(string_copy(t, 11+6*n, 5));
+  } else {
+    afterend = string_length(t)+1;
+  }
+  
+  //Return the <n>th element with the correct type
+  if (isstr) {
+    return string_copy(t, start, afterend-start);
+  }
+  else {
+    return real(string_copy(t, start, afterend-start));
+  }
+
+}
+
+#define __jso_gmt_size
+{
+  
+  /**
+  size(tuple_source): Return the size of <tuple_source>
+  @author: GameGeisha
+  @version: 1.2 (GMTuple)
+  */
+
+  return real(string_copy(argument0, 1, 3));
+
+}
+
+#define __jso_gmt_numtostr
+{
+
+  /**
+  __gmt_numtostr(num): Return string representation of <num>. Decimal numbers expressed as scientific notation
+  with double precision (i.e. 15 digits)
+  @author: GameGeisha
+  @version: 1.2 (edited)
+  */
+  if (frac(argument0) == 0) {
+    return string(argument0);
+  }
+  
+    var mantissa, exponent;
+    exponent = floor(log10(abs(argument0)));
+    mantissa = string_format(argument0/power(10,exponent), 15, 14);
+    var i, ca;
+    i = string_length(mantissa);
+    do {
+      ca = string_char_at(mantissa, i);
+      i -= 1;
+    } until (ca != "0")
+    if (ca != ".") {
+        mantissa = string_copy(mantissa, 1, i+1);
+    }
+    else {
+        mantissa = string_copy(mantissa, 1, i);
+    }
+    if (exponent != 0) {
+      return mantissa + "e" + string(exponent);
+    }
+    else {
+      return mantissa;
+    }
+
+}
+
+#define __jso_gmt_test_all
+{
+
+  /**
+  test_all(): Runs all test suites
+  @author: GameGeisha
+  @version: 1.2 (GMTuple)
+  */
+  
+  //Automated testing sequence
+  __jso_gmt_test_elem();
+  __jso_gmt_test_size();
+  __jso_gmt_test_numtostr();
+
+}
+
+#define __jso_gmt_test_numtostr
+{
+  
+  /**
+  _test_numtostr(): Runs number-to-string tests
+  @author: GameGeisha
+  @version: 1.2 (GMTuple)
+  */
+
+  var tolerance;
+  tolerance = 1/10000000000;
+
+  if (real(__jso_gmt_numtostr(9)) != 9) {
+    show_message("Scientific notation conversion failed for 1-digit integer! Result: " + __jso_gmt_numtostr(9));
+  }
+  if (real(__jso_gmt_numtostr(500)) != 500) {
+    show_message("Scientific notation conversion failed for 3-digit integer! Result: " + __jso_gmt_numtostr(500));
+  }
+  if (abs(real(__jso_gmt_numtostr(pi))-pi) > tolerance) {
+    show_message("Scientific notation conversion failed for pi! Result: " + __jso_gmt_numtostr(pi));
+  }
+  if (abs(real(__jso_gmt_numtostr(104729.903455))-104729.903455) > tolerance) {
+    show_message("Scientific notation conversion failed for large decimal number! Result: " + __jso_gmt_numtostr(104729.903455));
+  }
+  if (abs(real(__jso_gmt_numtostr(-pi))+pi) > tolerance) {
+    show_message("Scientific notation conversion failed for -pi! Result: " + __jso_gmt_numtostr(-pi));
+  }
+  if (abs(real(__jso_gmt_numtostr(1/pi))-1/pi) > tolerance) {
+    show_message("Scientific notation conversion failed for 1/pi! Result: " + __jso_gmt_numtostr(1/pi));
+  }
+
+}
+
+#define __jso_gmt_test_elem
+{
+
+  /**
+  _test_elem(): Runs tuple element retrieval tests
+  @author: GameGeisha
+  @version: 1.2 (GMTuple)
+  */
+
+  if (__jso_gmt_elem(__jso_gmt_tuple("Qblock", "kll"), 0) != "Qblock") {
+    show_message("Element retrieval failed for simple string. #Should be:Qblock#Actual:" + __jso_gmt_elem(__jso_gmt_tuple("Qblock"), 0));
+  }
+  if (__jso_gmt_elem(__jso_gmt_tuple(9, "Q", -7), 0) != 9) {
+    show_message("Element retrieval failed for simple number. #Should be 9#Actual:" + string(__jso_gmt_elem(__jso_gmt_tuple(9, "Q", 7), 0)));
+  }
+  if (__jso_gmt_elem(__jso_gmt_tuple("Qblock", "", "Negg"), 1) != "") {
+    show_message("Element retrieval failed for empty string#Should be empty string#Actual:"+string(__jso_gmt_elem(__jso_gmt_tuple("Qblock", "", "Negg"), 0)));
+  }
+  
+  if (__jso_gmt_elem(__jso_gmt_elem(__jso_gmt_tuple("Not this", __jso_gmt_tuple(0, 1, 2, 3), "Waahoo"), 1), 3) != 3) {
+    show_message("Element retrieval failed in nested tuple. #Should be 3#Actual:" + string(__jso_gmt_elem(__jso_gmt_elem(__jso_gmt_tuple("Not this", __jso_gmt_tuple(0, 1, 2, 3), "Waahoo"), 1), 3)));
+  }  
+
+}
+
+#define __jso_gmt_test_size
+{
+
+  /**
+  _test_size(): Runs tuple size tests
+  @author: GameGeisha
+  @version: 1.2 (GMTuple)
+  */
+
+  if (__jso_gmt_size(__jso_gmt_tuple("Waahoo", "Negg", 0)) != 3) {
+    show_message("Bad size for 3-tuple");
+  }
+  if (__jso_gmt_size(__jso_gmt_tuple()) != 0) {
+    show_message("Bad size for null tuple");
+  }
+  if (__jso_gmt_size(__jso_gmt_tuple(7)) != 1) {
+    show_message("Bad size for 1-tuple");
+  }
+  if (__jso_gmt_size(__jso_gmt_tuple(1,2,3,4,5,6,7,8,9,10)) != 10) {
+    show_message("Bad size for 10-tuple");
+  }
+
+}
+
+#define jso_new_map
+{
+    /**
+    jso_new_map(): Create a new map.
+    JSOnion version: 1.0.0d
+    */
+    return ds_map_create();
+}
+
+#define jso_new_list
+{
+    /**
+    jso_new_list(): Create a new list.
+    JSOnion version: 1.0.0d
+    */
+    return ds_list_create();
+}
+
+#define jso_map_add_real
+{
+    /**
+    jso_map_add_real(map, key, val): Add the key-value pair <key>:<val> to <map>, where <val> is a real value.
+    JSOnion version: 1.0.0d
+    */
+    ds_map_add(argument0, argument1, argument2);
+}
+
+#define jso_map_add_string
+{
+    /**
+    jso_map_add_string(map, key, str): Add the key-value pair <key>:<str> to <map>, where <str> is a string value.
+    JSOnion version: 1.0.0d
+    */
+    ds_map_add(argument0, argument1, "s" + argument2);
+}
+
+#define jso_map_add_sublist
+{
+    /**
+    jso_map_add_sublist(map, key, sublist): Add the key-value pair <key>:<sublist> to <map>, where <sublist> is a list.
+    JSOnion version: 1.0.0d
+    */
+    ds_map_add(argument0, argument1, "l" + string(argument2));
+}
+
+#define jso_map_add_submap
+{
+    /**
+    jso_map_add_submap(map, key, submap): Add the key-value pair <key>:<submap> to <map>, where <submap> is a map.
+    JSOnion version: 1.0.0d
+    */
+    ds_map_add(argument0, argument1, "m" + string(argument2));
+}
+
+#define jso_map_add_integer
+{
+    /**
+    jso_map_add_integer(map, key, int): Add the key-value pair <key>:<int> to <map>, where <int> is a integer value.
+    JSOnion version: 1.0.0d
+    */
+    ds_map_add(argument0, argument1, floor(argument2));
+}
+
+#define jso_map_add_boolean
+{
+    /**
+    jso_map_add_boolean(map, key, bool): Add the key-value pair <key>:<bool> to <map>, where <bool> is a boolean value.
+    JSOnion version: 1.0.0d
+    */
+    if (argument2) {
+        ds_map_add(argument0, argument1, "btrue");
+    } else {
+        ds_map_add(argument0, argument1, "bfalse");
+    }
+}
+
+#define jso_list_add_real
+{
+    /**
+    jso_list_add_real(list, val): Append the real value <val> to <list>.
+    JSOnion version: 1.0.0d
+    */
+    ds_list_add(argument0, argument1);
+}
+
+#define jso_list_add_string
+{
+    /**
+    jso_list_add_string(list, str): Append the string value <str> to <list>.
+    JSOnion version: 1.0.0d
+    */
+    ds_list_add(argument0, "s" + argument1);
+}
+
+#define jso_list_add_sublist
+{
+    /**
+    jso_list_add_sublist(list, sublist): Append the list <sublist> to <list>.
+    JSOnion version: 1.0.0d
+    */
+    ds_list_add(argument0, "l" + string(argument1));
+}
+
+#define jso_list_add_submap
+{
+    /**
+    jso_list_add_submap(list, submap): Append the map <submap> to <list>.
+    JSOnion version: 1.0.0d
+    */
+    ds_list_add(argument0, "m" + string(argument1));
+}
+
+#define jso_list_add_integer
+{
+    /**
+    jso_list_add_integer(list, int): Append the integer <int> to <list>.
+    JSOnion version: 1.0.0d
+    */
+    ds_list_add(argument0, floor(argument1));
+}
+
+#define jso_list_add_boolean
+{
+    /**
+    jso_list_add_boolean(list, bool): Append the boolean value <bool> to <list>.
+    JSOnion version: 1.0.0d
+    */
+    if (argument1) {
+        ds_list_add(argument0, "btrue");
+    } else {
+        ds_list_add(argument0, "bfalse");
+    }
+}
+
+#define jso_map_get
+{
+    /**
+    jso_map_get(map, key): Retrieve the value stored in <map> with the key value <key>, with the correct type.
+    JSOnion version: 1.0.0d
+    */
+
+    //Grab the value
+    var v;
+    v = ds_map_find_value(argument0, argument1);
+    
+    //String; could be string, map or list
+    if (is_string(v)) {
+        switch (string_char_at(v, 1)) {
+            case "s":
+                return string_delete(v, 1, 1);
+            break;
+            case "l": case "m":
+                return real(string_delete(v, 1, 1));
+            break;
+            case "b":
+                if (v == "btrue") {
+                    return true;
+                }
+                else if (v == "bfalse") {
+                    return false;
+                }
+                else {
+                    show_error("Invalid boolean value.", true);
+                }
+            break;
+            default: show_error("Invalid map contents.", true); break;
+        }    
+    }
+    
+    //Real; return real value as-is
+    else {
+        return v;
+    }
+}
+
+#define jso_map_get_type
+{
+    /**
+    jso_map_get_type(map, key): Return the type of value to which the key value <key> is mapped to in <map>.
+    JSOnion version: 1.0.0d
+    */
+
+    //Grab the value
+    var v;
+    v = ds_map_find_value(argument0, argument1);
+    
+    //String; could be string, map or list
+    if (is_string(v)) {
+        switch (string_char_at(v, 1)) {
+            case "s":
+                return jso_type_string;
+            break;
+            case "l":
+                return jso_type_list;
+            break;
+            case "m":
+                return jso_type_map;
+            break;
+            case "b":
+                return jso_type_boolean;
+            break;
+            default: show_error("Invalid map content type.", true); break;
+        }    
+    }
+    
+    //Real
+    else {
+        return jso_type_real;
+    }
+}
+
+#define jso_list_get
+{
+    /**
+    jso_list_get(list, index): Retrieve the value stored in <list> at position <index>, with the correct type.
+    JSOnion version: 1.0.0d
+    */
+
+    //Grab the value
+    var v;
+    v = ds_list_find_value(argument0, argument1);
+    
+    //String; could be string, map or list
+    if (is_string(v)) {
+        switch (string_char_at(v, 1)) {
+            case "s":
+                return string_delete(v, 1, 1);
+            break;
+            case "l": case "m":
+                return real(string_delete(v, 1, 1));
+            break;
+            case "b":
+                if (v == "btrue") {
+                    return true;
+                }
+                else if (v == "bfalse") {
+                    return false;
+                }
+                else {
+                    show_error("Invalid boolean value.", true);
+                }
+            break;
+            default: show_error("Invalid list contents.", true); break;
+        }    
+    }
+    
+    //Real; return real value as-is
+    else {
+        return v;
+    }
+}
+
+#define jso_list_get_type
+{
+    /**
+    jso_list_get_type(list, index): Retrieve the type of value found at position <index> of <list>.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Grab the value
+    var v;
+    v = ds_list_find_value(argument0, argument1);
+    
+    //String; could be string, map or list
+    if (is_string(v)) {
+        switch (string_char_at(v, 1)) {
+            case "s":
+                return jso_type_string;
+            break;
+            case "l":
+                return jso_type_list;
+            break;
+            case "m":
+                return jso_type_map;
+            break;
+            case "b":
+                return jso_type_boolean;
+            break;
+            default: show_error("Invalid list content type.", true); break;
+        }    
+    }
+    
+    //Real
+    else {
+        return jso_type_real;
+    }
+}
+
+#define jso_cleanup_map
+{
+    /**
+    jso_cleanup_map(map): Recursively free up <map>.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Loop through all keys
+    var i, l, k;
+    l = ds_map_size(argument0);
+    k = ds_map_find_first(argument0);
+    for (i=0; i<l; i+=1) {
+    
+        //Look for values that need to be recursed    
+        switch (jso_map_get_type(argument0, k)) {
+            //Maps
+            case jso_type_map:
+                jso_cleanup_map(jso_map_get(argument0, k));
+            break;
+            //Lists
+            case jso_type_list:
+                jso_cleanup_list(jso_map_get(argument0, k));
+            break;
+        }
+        
+        //Find next key
+        k = ds_map_find_next(argument0, k);
+    }
+    
+    //Done, clean up
+    ds_map_destroy(argument0);
+}
+
+#define jso_cleanup_list
+{
+    /**
+    jso_cleanup_list(list): Recursively free up <list>.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Loop through all elements
+    var i, l, v;
+    l = ds_list_size(argument0);
+    for (i=0; i<l; i+=1) {
+        //Look for elements that need to be recursed
+        switch (jso_list_get_type(argument0, i)) {
+            //Maps
+            case jso_type_map:
+                jso_cleanup_map(jso_list_get(argument0, i));
+            break;
+            //Lists
+            case jso_type_list:
+                jso_cleanup_list(jso_list_get(argument0, i));
+            break;
+        }
+    }
+    
+    //Done, clean up
+    ds_list_destroy(argument0);
+}
+
+#define jso_encode_real
+{
+    /**
+    jso_encode_real(<real>): Return a JSON-encoded version of real value <real>.
+    This uses scientific notation with up to 15 significant digits for decimal values.
+    For integers, it just uses string().
+    This is adapted from the same algorithm used in GMTuple.
+    JSOnion version: 1.0.0d
+    */
+    
+    return __jso_gmt_numtostr(argument0);
+}
+
+#define jso_encode_string
+{
+    /**
+    jso_encode_string(str): Return a JSON-encoded version of string <str>.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Iteratively reconstruct the string
+    var i, l, s, c;
+    s = "";
+    l = string_length(argument0);
+    for (i=1; i<=l; i+=1) {
+        //Replace escape characters
+        c = string_char_at(argument0, i);
+        switch (ord(c)) {
+            case 34: case 92: case 47: //Double quotes, backslashes and slashes
+                s += "\" + c;
+            break;
+            case 8: //Backspace
+                s += "\b";
+            break;
+            case 12: //Form feed
+                s += "\f";
+            break;
+            case 10: //New line
+                s += "\n";
+            break;
+            case 13: //Carriage return
+                s += "\r";
+            break;
+            case 9: //Horizontal tab
+                s += "\t";
+            break;
+            default: //Not an escape character
+                s += c;
+            break;
+        }
+    }
+
+    //Add quotes
+    return '"' + s + '"';
+}
+
+#define jso_encode_list
+{
+    /**
+    jso_encode_list(list): Return a JSON-encoded version of list <list>.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Iteratively encode each element
+    var i, l, s;
+    s = "";
+    l = ds_list_size(argument0);
+    for (i=0; i<l; i+=1) {
+        //Prepend comma except for the first element
+        if (i > 0) {
+            s += ",";
+        }
+        //Select correct encoding for each element, then recursively encode each
+        switch (jso_list_get_type(argument0, i)) {
+            case jso_type_real:
+                s += jso_encode_real(jso_list_get(argument0, i));
+            break;
+            case jso_type_string:
+                s += jso_encode_string(jso_list_get(argument0, i));
+            break;
+            case jso_type_map:
+                s += jso_encode_map(jso_list_get(argument0, i));
+            break;
+            case jso_type_list:
+                s += jso_encode_list(jso_list_get(argument0, i));
+            break;
+            case jso_type_boolean:
+                s += jso_encode_boolean(jso_list_get(argument0, i));
+            break;
+        }
+    }
+    
+    //Done, add square brackets
+    return "[" + s + "]";
+}
+
+#define jso_encode_map
+{
+    /**
+    jso_encode_map(map): Return a JSON-encoded version of map <map>.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Go through every key-value pair
+    var i, l, k, s;
+    s = "";
+    l = ds_map_size(argument0);
+    k = ds_map_find_first(argument0);
+    for (i=0; i<l; i+=1) {
+        //Prefix , if there is preceding item
+        if (i > 0) {
+            s += ",";
+        }
+        //Find the key and encode it
+        if (is_real(k)) {
+            s += jso_encode_real(k);
+        } else {
+            s += jso_encode_string(k);
+        }
+        //Add the : separator
+        s += ":";
+        //Select correct encoding for each value, then recursively encode each   
+        switch (jso_map_get_type(argument0, k)) {
+            case jso_type_real:
+                s += jso_encode_real(jso_map_get(argument0, k));
+            break;
+            case jso_type_string:
+                s += jso_encode_string(jso_map_get(argument0, k));
+            break;
+            case jso_type_map:
+                s += jso_encode_map(jso_map_get(argument0, k));
+            break;
+            case jso_type_list:
+                s += jso_encode_list(jso_map_get(argument0, k));
+            break;
+            case jso_type_boolean:
+                s += jso_encode_boolean(jso_map_get(argument0, k));
+            break;
+        }
+        //Get next key
+        k = ds_map_find_next(argument0, k);
+    }
+    
+    //Done, add braces
+    return "{" + s + "}";
+}
+
+#define jso_encode_integer
+{
+    /**
+    jso_encode_integer(int): Return a JSON-encoded version of the integer value <int>.
+    JSOnion version: 1.0.0d
+    */
+    return string(floor(argument0));
+}
+
+#define jso_encode_boolean
+{
+    /**
+    jso_encode_boolean(bool): Return a JSON-encoded version of the boolean value <bool>.
+    JSOnion version: 1.0.0d
+    */
+    if (argument0) {
+        return "true";
+    } else {
+        return "false";
+    }
+}
+
+#define jso_decode_map
+{
+    /**
+    jso_decode_map(json): Return a JSOnion-compatible map representing the JSON string <json>.
+    JSOnion version: 1.0.0d
+    */
+    return __jso_gmt_elem(_jso_decode_map(argument0, 1), 0);
+}
+
+#define jso_decode_list
+{
+    /**
+    jso_decode_list(json): Return a JSOnion-compatible list representing the JSON string <json>.
+    JSOnion version: 1.0.0d
+    */
+    return __jso_gmt_elem(_jso_decode_list(argument0, 1), 0);
+}
+
+#define jso_decode_string
+{
+    /**
+    jso_decode_string(json): Return a string representing the JSON string <json>.
+    JSOnion version: 1.0.0d
+    */
+    return __jso_gmt_elem(_jso_decode_string(argument0, 1), 0);
+}
+
+#define jso_decode_boolean
+{
+    /**
+    jso_decode_boolean(json): Return a boolean value representing the JSON string <json>.
+    JSOnion version: 1.0.0d
+    */
+    return __jso_gmt_elem(_jso_decode_boolean(argument0, 1), 0);
+}
+
+#define jso_decode_real
+{
+    /**
+    jso_decode_real(json): Return a real value representing the JSON string <json>.
+    JSOnion version: 1.0.0d
+    */
+    return __jso_gmt_elem(_jso_decode_real(argument0, 1), 0);
+}
+
+#define jso_decode_integer
+{
+    /**
+    jso_decode_integer(json): Return an integer value representing the JSON string <json>.
+    JSOnion version: 1.0.0d
+    */
+    return __jso_gmt_elem(_jso_decode_integer(argument0, 1), 0);
+}
+
+#define _jso_decode_map
+{
+    /**
+    _jso_decode_map(json, startindex): Extract a map from JSON string <json> starting at position <startindex>.
+    Return a 2-tuple of the extracted map handle and the position after the ending }.
+    JSOnion version: 1.0.0d
+    */
+    var i, len, map;
+    i = argument1;
+    len = string_length(argument0);
+    map = jso_new_map();
+    
+    //Seek to first {
+    var c;
+    c = string_char_at(argument0, i);
+    if (c != "{") {
+        do {
+            i += 1;
+            c = string_char_at(argument0, i);
+            if (!_jso_is_whitespace_char(c)) && (c != "{") {
+                show_error("Cannot parse map at position " + string(i), true);
+            }
+        } until (c == "{")
+    }
+    i += 1;
+    
+    //Read until end of JSON or ending }
+    var found_end, state, found, current_key;
+    found_end = false;
+    state = 0;
+    for (i=i; i<=len && !found_end; i+=1) {
+        c = string_char_at(argument0, i);
+        switch (state) {
+            //0: Looking for a key or closing }
+            case 0:
+                switch (c) {
+                    case "}":
+                        found_end = true;
+                    break;
+                    case '"':
+                        found = _jso_decode_string(argument0, i);
+                        current_key = __jso_gmt_elem(found, 0);
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 1;
+                    break;
+                    case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9": case "+": case "-":
+                        found = _jso_decode_real(argument0, i);
+                        current_key = __jso_gmt_elem(found, 0);
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 1;
+                    break;
+                    default:
+                        if (!_jso_is_whitespace_char(c)) {
+                            show_error("Unexpected character at position " + string(i) + ".", true);
+                        }
+                    break;
+                }
+            break;
+            //1: Looking for the : separator
+            case 1:
+                switch (c) {
+                    case ":":
+                        state = 2;
+                    break;
+                    default:
+                        if (!_jso_is_whitespace_char(c)) {
+                            show_error("Unexpected character at position " + string(i) + ".", true);
+                        }
+                    break;
+                }
+            break;
+            //2: Looking for a value
+            case 2:
+                switch (c) {
+                    case "[":
+                        found = _jso_decode_list(argument0, i);
+                        jso_map_add_sublist(map, current_key, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 3;
+                    break;
+                    case "{":
+                        found = _jso_decode_map(argument0, i);
+                        jso_map_add_submap(map, current_key, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 3;
+                    break;
+                    case '"':
+                        found = _jso_decode_string(argument0, i);
+                        jso_map_add_string(map, current_key, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 3;
+                    break;
+                    case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9": case "+": case "-":
+                        found = _jso_decode_real(argument0, i);
+                        jso_map_add_real(map, current_key, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 3;
+                    break;
+                    case "t": case "f":
+                        found = _jso_decode_boolean(argument0, i);
+                        jso_map_add_boolean(map, current_key, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 3;
+                    break;
+                    default:
+                        if (!_jso_is_whitespace_char(c)) {
+                            show_error("Unexpected character at position " + string(i) + ".", true);
+                        }
+                    break;
+                }
+            break;
+            //3: Done looking for an entry, want comma or }
+            case 3:
+                switch (c) {
+                    case "}":
+                        found_end = true;
+                    break;
+                    case ",":
+                        state = 0;
+                    break;
+                    default:
+                        if (!_jso_is_whitespace_char(c)) {
+                            show_error("Unexpected character at position " + string(i) + ".", true);
+                        }
+                    break;
+                }
+            break;
+        }
+    }
+    
+    //Return extracted map with ending position if the ending } is found
+    if (found_end) {
+        return __jso_gmt_tuple(map, i);
+    }
+    //Ended too early, throw error
+    else {
+        show_error("Unexpected end of map in JSON string.", true);
+    }
+}
+
+#define _jso_decode_list
+{
+    /**
+    _jso_decode_list(json, startindex): Extract a list from JSON string <json> starting at position <startindex>.
+    Return a 2-tuple of the extracted list handle and the position after the ending ].
+    JSOnion version: 1.0.0d
+    */
+    var i, len, list;
+    i = argument1;
+    len = string_length(argument0);
+    list = jso_new_list();
+    
+    //Seek to first [
+    var c;
+    c = string_char_at(argument0, i);
+    if (c != "[") {
+        do {
+            i += 1;
+            c = string_char_at(argument0, i);
+            if (!_jso_is_whitespace_char(c)) && (c != "[") {
+                show_error("Cannot parse list at position " + string(i), true);
+            }
+        } until (c == "[")
+    }
+    i += 1;
+    
+    //Read until end of JSON or ending ]
+    var found_end, state, found;
+    found_end = false;
+    state = 0;
+    for (i=i; i<=len && !found_end; i+=1) {
+        c = string_char_at(argument0, i);
+        switch (state) {
+            //0: Looking for an item
+            case 0:
+                switch (c) {
+                    case "]":
+                        found_end = true;
+                    break;
+                    case "[":
+                        found = _jso_decode_list(argument0, i);
+                        jso_list_add_sublist(list, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 1;
+                    break;
+                    case "{":
+                        found = _jso_decode_map(argument0, i);
+                        jso_list_add_submap(list, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 1;
+                    break;
+                    case '"':
+                        found = _jso_decode_string(argument0, i);
+                        jso_list_add_string(list, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 1;
+                    break;
+                    case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9": case "+": case "-":
+                        found = _jso_decode_real(argument0, i);
+                        jso_list_add_real(list, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 1;
+                    break;
+                    case "t": case "f":
+                        found = _jso_decode_boolean(argument0, i);
+                        jso_list_add_boolean(list, __jso_gmt_elem(found, 0));
+                        i = __jso_gmt_elem(found, 1)-1;
+                        state = 1;
+                    break;
+                    default:
+                        if (!_jso_is_whitespace_char(c)) {
+                            show_error("Unexpected character at position " + string(i) + ".", true);
+                        }
+                    break;
+                }
+            break;
+            //1: Done looking for an item, want comma or ]
+            case 1:
+                switch (c) {
+                    case "]":
+                        found_end = true;
+                    break;
+                    case ",":
+                        state = 0;
+                    break;
+                    default:
+                        if (!_jso_is_whitespace_char(c)) {
+                            show_error("Unexpected character at position " + string(i) + ".", true);
+                        }
+                    break;
+                }
+            break;
+        }
+    }
+    
+    //Return extracted list with ending position if the ending ] is found
+    if (found_end) {
+        return __jso_gmt_tuple(list, i);
+    }
+    //Ended too early, throw error
+    else {
+        show_error("Unexpected end of list in JSON string.", true);
+    }
+}
+
+#define _jso_decode_string
+{
+    /**
+    _jso_decode_string(json, startindex): Extract a string from JSON string <json> starting at position <startindex>.
+    Return a 2-tuple of the extracted string and the position after the ending double quote.
+    JSOnion version: 1.0.0d
+    */
+    var i, len, str;
+    i = argument1;
+    len = string_length(argument0);
+    str = "";
+    
+    //Seek to first double quote
+    var c;
+    c = string_char_at(argument0, i);
+    if (c != '"') {
+        do {
+            i += 1;
+            c = string_char_at(argument0, i);
+        } until (c == '"')
+    }
+    i += 1;
+    
+    //Read until end of JSON or ending double quote
+    var found_end, escape_mode;
+    found_end = false;
+    escape_mode = false;
+    for (i=i; i<=len && !found_end; i+=1) {
+        c = string_char_at(argument0, i);
+        //Escape mode
+        if (escape_mode) {
+            switch (c) {
+                case '"': case "\": case "/":
+                    str += c;
+                    escape_mode = false;
+                break;
+                case "b":
+                    str += chr(8);
+                    escape_mode = false;
+                break;
+                case "f":
+                    str += chr(12);
+                    escape_mode = false;
+                break;
+                case "n":
+                    str += chr(10);
+                    escape_mode = false;
+                break;
+                case "r":
+                    str += chr(13);
+                    escape_mode = false;
+                break;
+                case "t":
+                    str += chr(9);
+                    escape_mode = false;
+                break;
+                case "u":
+                    var u;
+                    if (len-i < 5) {
+                        show_error("Invalid escape character at position " + string(i) + ".", true);
+                    } else {
+                        str += chr(_jso_hex_to_decimal(string_copy(argument0, i+1, 4)));
+                        escape_mode = false;
+                        i += 4;
+                    }
+                break;
+                default:
+                    show_error("Invalid escape character at position " + string(i) + ".", true);
+                break;
+            }
+        }
+        //Regular mode
+        else {
+            switch (c) {
+                case '"': found_end = true; break;
+                case "\": escape_mode = true; break;
+                default: str += c; break;
+            }
+        }
+    }
+    
+    //Return extracted string with ending position if the ending double quote is found
+    if (found_end) {
+        return __jso_gmt_tuple(str, i);
+    }
+    //Ended too early, throw error
+    else {
+        show_error("Unexpected end of string in JSON string.", true);
+    }
+}
+
+#define _jso_decode_boolean
+{
+    /**
+    _jso_decode_boolean(json, startindex): Extract a boolean from JSON string <json> starting at position <startindex>.
+    Return a 2-tuple of the extracted boolean and the position after the last e.
+    JSOnion version: 1.0.0d
+    */
+    var i, len, str;
+    i = argument1;
+    len = string_length(argument0);
+    
+    //Seek to first t or f that can be found
+    var c;
+    c = string_char_at(argument0, i);
+    if (c != "t") && (c != "f") {
+        do {
+            i += 1;
+            c = string_char_at(argument0, i);
+            if (!_jso_is_whitespace_char(c)) && (c != "t") && (c != "f") {
+                show_error("Cannot parse boolean value at position " + string(i), true);
+            }
+        } until (c == "t") || (c == "f")
+    }
+    
+    //Look for true if t is found
+    if (c == "t") && (string_copy(argument0, i, 4) == "true") {
+        return __jso_gmt_tuple(true, i+4);
+    }
+    //Look for false if f is found
+    else if (c == "f") && (string_copy(argument0, i, 5) == "false") {
+        return __jso_gmt_tuple(false, i+5);
+    }
+    //Error: unexpected ending
+    else {
+        show_error("Unexpected end of boolean in JSON string.", true);
+    }
+}
+
+#define _jso_decode_real
+{
+    /**
+    _jso_decode_real(json, startindex): Extract a real value from JSON string <json> starting at position <startindex>.
+    Return a 2-tuple of the extracted real value and the position after the real value.
+    JSOnion version: 1.0.0d
+    */
+    var i, len, str;
+    i = argument1;
+    len = string_length(argument0);
+    str = "";
+    
+    //Seek to first character: +, -, or 0-9
+    var c;
+    c = string_char_at(argument0, i);
+    if (string_pos(c, "0123456789+-") == 0) {
+        do {
+            i += 1;
+            c = string_char_at(argument0, i);
+            if (!_jso_is_whitespace_char(c)) && (string_pos(c, "0123456789+-") == 0) {
+                show_error("Cannot parse real value at position " + string(i), true);
+            }
+        } until (string_pos(c, "0123456789+-") > 0)
+    }
+    
+    //Determine starting state
+    var state;
+    switch (c) {
+        case "+": case "-":
+            state = 0;
+        break;
+        default:
+            state = 1;
+        break;
+    }
+    str += c;
+    i += 1;
+    
+    //Loop until no more digits found
+    var done;
+    done = false;
+    for (i=i; i<=len && !done; i+=1) {
+        c = string_char_at(argument0, i);
+        switch (state) {
+            //0: Found a sign, looking for a starting number
+            case 0:
+                switch (c) {
+                    case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9":
+                        str += c;
+                        state = 1;
+                    break;
+                    default:
+                        show_error("Unexpected character at position " + string(i) + ", expecting a digit.", true);
+                    break;
+                }
+            break;
+            //1: Found a starting digit, looking for decimal dot, e, E, or more digits
+            case 1:
+                if (_jso_is_whitespace_char(c)) || (string_pos(c, ":,]}") > 0) {
+                    done = true;
+                    i -= 1;
+                } else {
+                    switch (c) {
+                        case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9":
+                            str += c;
+                        break;
+                        case ".":
+                            str += c;
+                            state = 2;
+                        break;
+                        case "e": case "E":
+                            str += c;
+                            state = 3;
+                        break;
+                        default:
+                            show_error("Unexpected character at position " + string(i) + ", expecting a dot, e, E or a digit.", true);
+                        break;
+                    }
+                }
+            break;
+            //2: Found a decimal dot, looking for more digits
+            case 2:
+                switch (c) {
+                    case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9":
+                        str += c;
+                        state = -2;
+                    break;
+                    default:
+                        show_error("Unexpected character at position " + string(i) + ", expecting a digit.", true);
+                    break;
+                }
+            break;
+            //-2: Found a decimal dot and a digit after it, looking for more digits, e, or E
+            case -2:
+                if (_jso_is_whitespace_char(c)) || (string_pos(c, ":,]}") > 0) {
+                    done = true;
+                    i -= 1;
+                } else {
+                    switch (c) {
+                        case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9":
+                            str += c;
+                        break;
+                        case "e": case "E":
+                            str += c;
+                            state = 3;
+                        break;
+                        default:
+                            show_error("Unexpected character at position " + string(i) + ", expecting an e, E or a digit.", true);
+                        break;
+                    }
+                }
+            break;
+            //3: Found an e/E, looking for +, - or more digits
+            case 3:
+                switch (c) {
+                    case "+": case "-":
+                        str += c;
+                        state = 4;
+                    break;
+                    case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9":
+                        str += c;
+                        state = 5;
+                    break;
+                    default:
+                        show_error("Unexpected character at position " + string(i) + ", expecting a +, - or a digit.", true);
+                    break;
+                }
+            break;
+            //4: Found an e/E exponent sign, looking for more digits
+            case 4:
+                switch (c) {
+                    case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9":
+                        str += c;
+                        state = 5;
+                    break;
+                    default:
+                        show_error("Unexpected character at position " + string(i) + ", expecting a digit.", true);
+                    break;
+                }
+            break;
+            //5: Looking for final digits of the exponent
+            case 5:
+                if (_jso_is_whitespace_char(c)) || (string_pos(c, ":,]}") > 0) {
+                    done = true;
+                    i -= 1;
+                } else {
+                    switch (c) {
+                        case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9":
+                            str += c;
+                            state = 5;
+                        break;
+                        default:
+                            show_error("Unexpected character at position " + string(i) + ", expecting a digit.", true);
+                        break;
+                    }
+                }
+            break;
+        }
+    }
+    
+    //Am I still expecting more characters?
+    if (done) || (state == 1) || (state == -2) || (state == 5) {
+        return __jso_gmt_tuple(real(str), i);
+    }
+    //Error: unexpected ending
+    else {
+        show_error("Unexpected end of real in JSON string.", true);
+    }
+}
+
+#define _jso_decode_integer
+{
+    /**
+    _jso_decode_real(json, startindex): Extract a real value from JSON string <json> starting at position <startindex>.
+    Return a 2-tuple of the extracted integer value (with leading i) and the position after the real value.
+    JSOnion version: 1.0.0d
+    */
+    var i, len, str;
+    i = argument1;
+    len = string_length(argument0);
+    str = "";
+    
+    //Seek to first character: +, -, or 0-9
+    var c;
+    c = string_char_at(argument0, i);
+    if (string_pos(c, "0123456789+-") == 0) {
+        do {
+            i += 1;
+            c = string_char_at(argument0, i);
+            if (!_jso_is_whitespace_char(c)) && (string_pos(c, "0123456789+-") == 0) {
+                show_error("Cannot parse integer value at position " + string(i), true);
+            }
+        } until (string_pos(c, "0123456789+-") > 0)
+    }
+    
+    //Determine starting state
+    var state;
+    switch (c) {
+        case "+": case "-":
+            state = 0;
+        break;
+        default:
+            state = 1;
+        break;
+    }
+    str += c;
+    i += 1;
+    
+    //Loop until no more digits found
+    var done;
+    done = false;
+    for (i=i; i<=len && !done; i+=1) {
+        c = string_char_at(argument0, i);
+        switch (state) {
+            //0: Found a sign, looking for a starting number
+            case 0:
+                switch (c) {
+                    case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9":
+                        str += c;
+                        state = 1;
+                    break;
+                    default:
+                        show_error("Unexpected character at position " + string(i) + ", expecting a digit.", true);
+                    break;
+                }
+            break;
+            //1: Found a starting digit, looking for decimal dot, e, E, or more digits
+            case 1:
+                if (_jso_is_whitespace_char(c)) || (string_pos(c, ":,]}") > 0) {
+                    done = true;
+                    i -= 1;
+                } else {
+                    switch (c) {
+                        case "0": case "1": case "2": case "3": case "4": case "5": case "6": case "7": case "8": case "9":
+                            str += c;
+                        break;
+                        default:
+                            show_error("Unexpected character at position " + string(i) + ", expecting a digit.", true);
+                        break;
+                    }
+                }
+            break;
+        }
+    }
+    
+    //Am I still expecting more characters?
+    if (done) || (state == 1) {
+        return __jso_gmt_tuple(floor(real(str)), i);
+    }
+    //Error: unexpected ending
+    else {
+        show_error("Unexpected end of integer in JSON string.", true);
+    }
+}
+
+#define jso_compare_maps
+{
+    /**
+    jso_compare_maps(map1, map2): Return whether the contents of JSOnion-compatible maps <map1> and <map2> are the same.
+    JSOnion version: 1.0.0d
+    */
+    
+    //If they aren't the same size, they can't be the same
+    var size;
+    size = ds_map_size(argument0);
+    if (size != ds_map_size(argument1)) {
+        return false;
+    }
+    
+    //Compare contents pairwise
+    var i, k, type, a, b;
+    k = ds_map_find_first(argument0);
+    for (i=0; i<size; i+=1) {
+        //Check that key exists on both sides
+        if (!ds_map_exists(argument1, k)) {
+            return false;
+        }
+        //Check type
+        type = jso_map_get_type(argument0, k);
+        if (jso_map_get_type(argument1, k) != type) {
+            return false;
+        }
+        //Check content
+        a = jso_map_get(argument0, k);
+        b = jso_map_get(argument1, k);
+        switch (type) {
+            case jso_type_map:
+                if (!jso_compare_maps(a, b)) {
+                    return false;
+                }
+            break;
+            case jso_type_list:
+                if (!jso_compare_lists(a, b)) {
+                    return false;
+                }
+            break;
+            default:
+                if (a != b) {
+                    return false;
+                }
+            break;
+        }
+        //Advance to next key
+        k = ds_map_find_next(argument0, k);
+    }
+    
+    //No mismatches, return true
+    return true;
+}
+
+#define jso_compare_lists
+{
+    /**
+    jso_compare_lists(list1, list2): Return whether the contents of JSOnion-compatible lists <list1> and <list2> are the same.
+    JSOnion version: 1.0.0d
+    */
+    
+    //If they aren't the same size, they can't be the same
+    var size;
+    size = ds_list_size(argument0);
+    if (size != ds_list_size(argument1)) {
+        return false;
+    }
+    
+    //Compare contents pairwise
+    var i, type, a, b;
+    for (i=0; i<size; i+=1) {
+        //Check type
+        type = jso_list_get_type(argument0, i);
+        if (jso_list_get_type(argument1, i) != type) {
+            return false;
+        }
+        //Check content
+        a = jso_list_get(argument0, i);
+        b = jso_list_get(argument1, i);
+        switch (type) {
+            case jso_type_map:
+                if (!jso_compare_maps(a, b)) {
+                    return false;
+                }
+            break;
+            case jso_type_list:
+                if (!jso_compare_lists(a, b)) {
+                    return false;
+                }
+            break;
+            default:
+                if (a != b) {
+                    return false;
+                }
+            break;
+        }
+    }
+    
+    //No mismatches, return true
+    return true;
+}
+
+#define jso_map_check
+{
+    /**
+    jso_map_check(map, key1, key2, ...): Recursively look up keys/indices in the top-level map <map>, return whether a value exists there.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Catch empty calls
+    if (argument_count < 2) {
+        show_error("Expected at least 2 arguments, got " + string(argument_count) + ".", true);
+    }
+    
+    //Build list of keys/indices
+    var i, key_list;
+    key_list = ds_list_create();
+    for (i=1; i<argument_count; i+=1) {
+        ds_list_add(key_list, argument[i]);
+    }
+    
+    //Call lookup kernel and cleanup
+    var result;
+    result = _jso_lookup_kernel(argument[0], jso_type_map, 0, key_list);
+    ds_list_destroy(key_list);
+    
+    //Done
+    return result;
+}
+
+#define jso_list_check
+{
+    /**
+    jso_list_check(list, key1, key2, ...): Recursively look up keys/indices in the top-level list <list>, return whether a value exists there.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Catch empty calls
+    if (argument_count < 2) {
+        show_error("Expected at least 2 arguments, got " + string(argument_count) + ".", true);
+    }
+    
+    //Build list of keys/indices
+    var i, key_list;
+    key_list = ds_list_create();
+    for (i=1; i<argument_count; i+=1) {
+        ds_list_add(key_list, argument[i]);
+    }
+    
+    //Call lookup kernel and cleanup
+    var result;
+    result = _jso_lookup_kernel(argument[0], jso_type_list, 0, key_list);
+    ds_list_destroy(key_list);
+    
+    //Done
+    return result;
+}
+
+#define jso_map_lookup
+{
+    /**
+    jso_map_lookup(map, key1, key2, ...): Recursively look up keys/indices in the top-level map <map>, return the value that exists there.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Catch empty calls
+    if (argument_count < 2) {
+        show_error("Expected at least 2 arguments, got " + string(argument_count) + ".", true);
+    }
+    
+    //Build list of keys/indices
+    var i, key_list;
+    key_list = ds_list_create();
+    for (i=1; i<argument_count; i+=1) {
+        ds_list_add(key_list, argument[i]);
+    }
+    
+    //Call lookup kernel and cleanup
+    var result;
+    result = _jso_lookup_kernel(argument[0], jso_type_map, 1, key_list);
+    ds_list_destroy(key_list);
+    
+    //Done
+    return result;
+}
+
+#define jso_map_lookup_type
+{
+    /**
+    jso_map_lookup_type(map, key1, key2, ...): Recursively look up keys/indices in the top-level map <map>, return the type of value that exists there.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Catch empty calls
+    if (argument_count < 2) {
+        show_error("Expected at least 2 arguments, got " + string(argument_count) + ".", true);
+    }
+    
+    //Build list of keys/indices
+    var i, key_list;
+    key_list = ds_list_create();
+    for (i=1; i<argument_count; i+=1) {
+        ds_list_add(key_list, argument[i]);
+    }
+    
+    //Call lookup kernel and cleanup
+    var result;
+    result = _jso_lookup_kernel(argument[0], jso_type_map, 2, key_list);
+    ds_list_destroy(key_list);
+    
+    //Done
+    return result;
+}
+
+#define jso_list_lookup
+{
+    /**
+    jso_list_lookup(list, key1, key2, ...): Recursively look up keys/indices in the top-level list <list>, return the value that exists there.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Catch empty calls
+    if (argument_count < 2) {
+        show_error("Expected at least 2 arguments, got " + string(argument_count) + ".", true);
+    }
+    
+    //Build list of keys/indices
+    var i, key_list;
+    key_list = ds_list_create();
+    for (i=1; i<argument_count; i+=1) {
+        ds_list_add(key_list, argument[i]);
+    }
+    
+    //Call lookup kernel and cleanup
+    var result;
+    result = _jso_lookup_kernel(argument[0], jso_type_list, 1, key_list);
+    ds_list_destroy(key_list);
+    
+    //Done
+    return result;
+}
+
+#define jso_list_lookup_type
+{
+    /**
+    jso_list_lookup_type(list, key1, key2, ...): Recursively look up keys/indices in the top-level list <list>, return the type of value that exists there.
+    JSOnion version: 1.0.0d
+    */
+    
+    //Catch empty calls
+    if (argument_count < 2) {
+        show_error("Expected at least 2 arguments, got " + string(argument_count) + ".", true);
+    }
+    
+    //Build list of keys/indices
+    var i, key_list;
+    key_list = ds_list_create();
+    for (i=1; i<argument_count; i+=1) {
+        ds_list_add(key_list, argument[i]);
+    }
+    
+    //Call lookup kernel and cleanup
+    var result;
+    result = _jso_lookup_kernel(argument[0], jso_type_list, 2, key_list);
+    ds_list_destroy(key_list);
+    
+    //Done
+    return result;
+}
+
+#define _jso_lookup_kernel
+{
+    /**
+    _jso_lookup_kernel(jso_ds, jso_type, task_type, ds_args_list): Kernel of the check and lookup functions.
+    - jso_ds: The JSOnion-compatible data structure handle.
+    - jso_type: The type of the JSOnion-compatible (jso_type_list or jso_type_map)
+    - task_type: 0=check, 1=lookup, 2=lookup type
+    - ds_args_list: ds_list of arguments passed in.
+    
+    PLEASE DO NOT CALL DIRECTLY --- use regular jso_*() functions.
+    JSOnion version: 1.0.0d
+    */
+    
+    var i, k, data, type, type_string, task_type, keys_size, ds_args_list;
+    data = argument0;
+    type = argument1;
+    if (type == jso_type_map) {
+        type_string = "map";
+    } else {
+        type_string = "list";
+    }
+    task_type = argument2;
+    ds_args_list = argument3;
+    keys_size = ds_list_size(ds_args_list);
+    
+    //Iteratively go through arguments in ds_args_list
+    for (i=0; i<keys_size; i+=1) {
+        k = ds_list_find_value(argument3, i);
+        switch (type) {
+            //Check for existence of the key in the current map
+            case jso_type_map:
+                if (!ds_map_exists(data, k)) {
+                    switch (task_type) {
+                        case 0:
+                            return false;
+                        break;
+                        default:
+                            show_error("Cannot find value in " + type_string + " lookup.", true);
+                        break;
+                    }
+                }
+                type = jso_map_get_type(data, k);
+                data = jso_map_get(data, k);
+            break;
+            //Check for existence of the index in the current list
+            case jso_type_list:
+                if (is_string(k)) {
+                    switch (task_type) {
+                        case 0:
+                            return false;
+                        break;
+                        default:
+                            show_error("Cannot use string indices for nested lists in " + type_string + " lookup.", true);
+                        break;
+                    }
+                }
+                if (k >= ds_list_size(data)) {
+                    switch (task_type) {
+                        case 0:
+                            return false;
+                        break;
+                        default:
+                            show_error("Index overflow for nested lists in " + type_string + " lookup.", true);
+                        break;
+                    }
+                }
+                type = jso_list_get_type(data, k);
+                data = jso_list_get(data, k);
+            break;
+            //Trying to go through a leaf; don't attempt to look further
+            default:
+                switch (task_type) {
+                    case 0:
+                        return false;
+                    break;
+                    default:
+                        show_error("Recursive overflow in " + type_string + " lookup.", true);
+                    break;
+                }
+            break;
+        }
+    }
+    
+    //Can find something, return the value requested by the task
+    switch (task_type) {
+        case 0:
+            return true;
+        break;
+        case 1:
+            return data;
+        break;
+        case 2:
+            return type;
+        break;
+    }
+}
+
+#define _jso_is_whitespace_char
+{
+    /**
+    _jso_is_whitespace_char(char): Return whether <char> is a whitespace character.
+    Definition of whitespace is given by Unicode 6.0, Chapter 4.6.
+    JSOnion version: 1.0.0d
+    */
+    switch (ord(argument0)) {
+        case $0009:
+        case $000A:
+        case $000B:
+        case $000C:
+        case $000D:
+        case $0020:
+        case $0085:
+        case $00A0:
+        case $1680:
+        case $180E:
+        case $2000:
+        case $2001:
+        case $2002:
+        case $2003:
+        case $2004:
+        case $2005:
+        case $2006:
+        case $2007:
+        case $2008:
+        case $2009:
+        case $200A:
+        case $2028:
+        case $2029:
+        case $202F:
+        case $205F:
+        case $3000:
+            return true;
+    }
+    return false;
+}
+
+#define _jso_hex_to_decimal
+{
+    /**
+    _jso_hex_to_decimal(hex_string): Return the decimal value of the hex number represented by <hex_string>
+    JSOnion version: 1.0.0d
+    */
+    var hex_string, hex_digits;
+    hex_string = string_lower(argument0);
+    hex_digits = "0123456789abcdef";
+    
+    //Convert digit-by-digit
+    var i, len, digit_value, num;
+    len = string_length(hex_string);
+    num = 0;
+    for (i=1; i<=len; i+=1) {
+        digit_value = string_pos(string_char_at(hex_string, i), hex_digits)-1;
+        if (digit_value >= 0) {
+            num *= 16;
+            num += digit_value;
+        } 
+        //Unknown character
+        else {
+            show_error("Invalid hex number: " + argument0, true);
+        }
+    }
+    return num;
+}
+
diff --git a/samples/Game Maker Language/jsonion_test.gml b/samples/Game Maker Language/jsonion_test.gml
new file mode 100644
index 00000000..3cf0d423
--- /dev/null
+++ b/samples/Game Maker Language/jsonion_test.gml	
@@ -0,0 +1,1169 @@
+// Originally from /jsonion_test.gml in JSOnion
+// JSOnion v1.0.0d is licensed under the MIT licence. You may freely adapt and use this library in commercial and non-commercial projects.
+
+#define assert_true
+{
+    /**
+    assert_true(result, errormsg): Display error <errormsg> unless <result> is true.
+    */
+    
+    if (!argument0) {
+        _assert_error_popup(argument1 + string_repeat(_assert_newline(), 2) + "Expected true, got false.");
+    }
+}
+
+#define assert_false
+{
+    /**
+    assert_false(result, errormsg): Display error <errormsg> unless <result> is false.
+    */
+    
+    if (argument0) {
+        _assert_error_popup(argument1 + string_repeat(_assert_newline(), 2) + "Expected false, got true.");
+    }
+}
+
+#define assert_equal
+{
+    /**
+    assert_equal(expected, result, errormsg): Display error <errormsg> unless <expected> and <result> are equal.
+    */
+    
+    //Safe equality check; won't crash even if the two are different types
+    var match;
+    match = is_string(argument0) == is_string(argument1);
+    if (match) {
+        match = argument0 == argument1;
+    }
+
+    //No match?
+    if (!match) {
+        //Data types
+        var type;
+        type[0] = "(Real)";
+        type[1] = "(String)";
+        
+        //Construct message
+        var msg;
+        msg = argument2;
+        //Add expected value
+        msg += string_repeat(_assert_newline(), 2);
+        msg += "Expected " + type[is_string(argument0)] + ":" + _assert_newline();
+        msg += _assert_debug_value(argument0);
+        //Add actual value
+        msg += string_repeat(_assert_newline(), 2);
+        msg += "Actual " + type[is_string(argument1)] + ":" + _assert_newline();
+        msg += _assert_debug_value(argument1);
+        
+        //Display message
+        _assert_error_popup(msg);
+    }
+}
+
+#define _assert_error_popup
+{
+    /**
+    _assert_error_popup(msg): Display an assertion error.
+    */
+    
+    //Display message
+    if (os_browser == browser_not_a_browser) {
+        show_error(argument0, false); //Full-fledged error message for non-browser environments
+    } else {
+        show_message(argument0); //Browsers don't support show_error(), use show_message() instead
+    }
+}
+
+#define _assert_debug_value
+{
+    /**
+    _assert_debug_value(val): Returns a low-level debug value for the value <val>.
+    <val> can be a string or a real value.
+    */
+    
+    //String
+    if (is_string(argument0)) {
+        if (os_browser == browser_not_a_browser) {
+            return argument0;
+        } else {
+            return string_replace_all(argument0, "#", "\#");
+        }
+    }
+    
+    //Numeric --- use GMTuple's algorithm
+    else {
+    
+        //Integers
+        if (frac(argument0) == 0) {
+            return string(argument0);
+        }
+        
+        //Decimal numbers; get exponent and mantissa  
+        var mantissa, exponent;
+        exponent = floor(log10(abs(argument0)));
+        mantissa = string_format(argument0/power(10,exponent), 15, 14);
+        //Look for trailing zeros in the mantissa
+        var i, ca;
+        i = string_length(mantissa);
+        do {
+            ca = string_char_at(mantissa, i);
+            i -= 1;
+        } until (ca != "0")
+        //Remove the dot if only the first digit of the normalized mantissa is nonzero
+        if (ca != ".") {
+            mantissa = string_copy(mantissa, 1, i+1);
+        }
+        else {
+            mantissa = string_copy(mantissa, 1, i);
+        }
+        //Remove the exponent if it is 0
+        if (exponent != 0) {
+            return mantissa + "e" + string(exponent);
+        } else {
+            return mantissa;
+        }
+    
+    //GMTuple algorithm done
+    }
+}
+
+#define _assert_newline
+{
+    /**
+    _assert_newline(): Returns a system-appropriate newline character sequence.
+    */
+    
+    if (os_browser == browser_not_a_browser) {
+        return chr(13) + chr(10);
+    } else {
+        return "#";
+    }
+}
+
+#define jso_test_all
+{
+    /**
+    jso_test_all(): Run the test suite for the JSOnion library.
+    JSOnion version: 1.0.0d
+    */
+    var a, b;
+    a = current_time;
+    _test_jso_new();
+    _test_jso_map_add();
+    _test_jso_list_add();
+    _test_jso_encode();
+    _test_jso_compare();
+    _test_jso_decode();
+    _test_jso_lookup();
+    _test_jso_bugs();
+    __jso_gmt_test_all();
+    b = current_time;
+    show_debug_message("JSOnion: Tests completed in " + string(b-a) + "ms.");
+}
+
+#define _test_jso_new
+{
+    /**
+    _test_jso_new(): Test jso_new_*() functions.
+    JSOnion version: 1.0.0d
+    */
+    
+    var expected, actual;
+    
+    //jso_new_map()
+    actual = jso_new_map();
+    assert_true(actual >= 0, "jso_new_map() failed to create a new map.");
+    ds_map_destroy(actual);
+    
+    //jso_new_list()
+    actual = jso_new_list();
+    assert_true(actual >= 0, "jso_new_list() failed to create a new list.");
+    ds_list_destroy(actual);
+}
+
+#define _test_jso_map_add
+{
+    /**
+    _test_jso_map_add(): Test jso_map_add_*() functions.
+    JSOnion version: 1.0.0d
+    */
+    
+    var expected, actual, key, map;
+    map = jso_new_map();
+    
+    //jso_map_add_real()
+    expected = pi;
+    key = "pi";
+    jso_map_add_real(map, key, expected);
+    actual = jso_map_get(map, key);
+    assert_true(ds_map_exists(map, key), "jso_map_add_real() failed to add the number.");
+    assert_equal(expected, actual, "jso_map_add_real() added the wrong number.");
+    ds_map_delete(map, key);
+    
+    //jso_map_add_string()
+    expected = "waahoo";
+    key = "str";
+    jso_map_add_string(map, key, expected);
+    actual = jso_map_get(map, key);
+    assert_true(ds_map_exists(map, key), "jso_map_add_string() failed to add the string.");
+    assert_equal(expected, actual, "jso_map_add_string() added the wrong string.");
+    ds_map_delete(map, key);
+    
+    //jso_map_add_sublist()
+    expected = jso_new_list();
+    key = "sublist";
+    jso_map_add_sublist(map, key, expected);
+    actual = jso_map_get(map, key);
+    assert_true(ds_map_exists(map, key), "jso_map_add_sublist() failed to add the new sublist.");
+    assert_equal(expected, actual, "jso_map_add_sublist() added the wrong sublist.");
+    ds_map_delete(map, key);
+    ds_list_destroy(expected);
+    
+    //jso_map_add_submap()
+    expected = jso_new_map();
+    key = "sublist";
+    jso_map_add_sublist(map, key, expected);
+    actual = jso_map_get(map, key);
+    assert_true(ds_map_exists(map, key), "jso_map_add_submap() failed to add the new submap.");
+    assert_equal(expected, actual, "jso_map_add_submap() added the wrong submap.");
+    ds_map_delete(map, key);
+    ds_map_destroy(expected);
+    
+    //jso_map_add_integer()
+    expected = 2345;
+    key = "integer";
+    jso_map_add_integer(map, key, expected);
+    actual = jso_map_get(map, key);
+    assert_true(ds_map_exists(map, key), "jso_map_add_integer() failed to add the new integer.");
+    assert_equal(expected, actual, "jso_map_add_integer() added the wrong integer.");
+    ds_map_delete(map, key);
+    
+    //jso_map_add_boolean() --- true
+    expected = true;
+    key = "booleantrue";
+    jso_map_add_boolean(map, key, expected);
+    actual = jso_map_get(map, key);
+    assert_true(ds_map_exists(map, key), "jso_map_add_boolean() failed to add true.");
+    assert_true(actual, "jso_map_add_boolean() added the wrong true.");
+    ds_map_delete(map, key);
+    
+    //jso_map_add_boolean() --- false
+    expected = false;
+    key = "booleanfalse";
+    jso_map_add_boolean(map, key, expected);
+    actual = jso_map_get(map, key)
+    assert_true(ds_map_exists(map, key), "jso_map_add_boolean() failed to add false.");
+    assert_false(actual, "jso_map_add_boolean() added the wrong false.");
+    ds_map_delete(map, key);
+    
+    //Cleanup
+    ds_map_destroy(map);
+}
+
+#define _test_jso_list_add
+{
+    /**
+    _test_jso_list_add(): Test jso_list_add_*() functions.
+    JSOnion version: 1.0.0d
+    */
+    
+    var expected, actual, list;
+    list = jso_new_list();
+    
+    //jso_list_add_real()
+    expected = pi;
+    jso_list_add_real(list, expected);
+    actual = jso_list_get(list, 0);
+    assert_false(ds_list_empty(list), "jso_list_add_real() failed to add the number.");
+    assert_equal(expected, actual, "jso_list_add_real() added the wrong number.");
+    ds_list_clear(list);
+    
+    //jso_list_add_string()
+    expected = "waahoo";
+    jso_list_add_string(list, expected);
+    actual = jso_list_get(list, 0);
+    assert_false(ds_list_empty(list), "jso_list_add_string() failed to add the string.");
+    assert_equal(expected, actual, "jso_list_add_string() added the wrong string.");
+    ds_list_clear(list);
+    
+    //jso_list_add_sublist()
+    expected = jso_new_list();
+    jso_list_add_sublist(list, expected);
+    actual = jso_list_get(list, 0);
+    assert_false(ds_list_empty(list), "jso_list_add_sublist() failed to add the sublist.");
+    assert_equal(expected, actual, "jso_list_add_sublist() added the wrong sublist.");
+    ds_list_clear(list);
+    ds_list_destroy(expected);
+    
+    //jso_list_add_submap()
+    expected = jso_new_map();
+    jso_list_add_submap(list, expected);
+    actual = jso_list_get(list, 0);
+    assert_false(ds_list_empty(list), "jso_list_add_submap() failed to add the submap.");
+    assert_equal(expected, actual, "jso_list_add_submap() added the wrong submap.");
+    ds_list_clear(list);
+    ds_map_destroy(expected);
+    
+    //jso_list_add_integer()
+    expected = 2345;
+    jso_list_add_integer(list, expected);
+    actual = jso_list_get(list, 0);
+    assert_false(ds_list_empty(list), "jso_list_add_integer() failed to add integer.");
+    assert_equal(expected, actual, "jso_list_add_integer() added the wrong integer.");
+    ds_list_clear(list);
+    
+    //jso_list_add_boolean() --- true
+    expected = true;
+    jso_list_add_boolean(list, expected);
+    actual = jso_list_get(list, 0);
+    assert_false(ds_list_empty(list), "jso_list_add_boolean() failed to add boolean true.");
+    assert_true(actual, "jso_list_add_boolean() added the wrong boolean true.");
+    ds_list_clear(list);
+    
+    //jso_list_add_boolean() --- false
+    expected = false;
+    jso_list_add_boolean(list, expected);
+    actual = jso_list_get(list, 0);
+    assert_false(ds_list_empty(list), "jso_list_add_boolean() failed to add boolean false.");
+    assert_false(actual, "jso_list_add_boolean() added the wrong boolean false.");
+    ds_list_clear(list);
+    
+    //Cleanup
+    ds_list_destroy(list);
+}
+
+#define _test_jso_encode
+{
+    /**
+    _test_jso_encode(): Tests jso_encode_*() functions.
+    JSOnion version: 1.0.0d
+    */
+    
+    var original, expected, actual;
+    
+    //jso_encode_real() --- Positive
+    expected = 3.1415;
+    actual = jso_encode_real(3.1415);
+    assert_equal(expected, real(actual), "jso_encode_real() failed to encode positive real!");
+    
+    //jso_encode_real() --- Negative
+    expected = -2.71828;
+    actual = jso_encode_real(-2.71828);
+    assert_equal(expected, real(actual), "jso_encode_real() failed to encode negative real!");
+    
+    //jso_encode_real() --- Zero
+    expected = 0;
+    actual = jso_encode_integer(0);
+    assert_equal(expected, real(actual), "jso_encode_real() failed to encode zero!");
+    
+    //jso_encode_integer() --- Positive
+    expected = "2345";
+    actual = jso_encode_integer(2345);
+    assert_equal(expected, actual, "jso_encode_integer() failed to encode positive integer!");
+    
+    //jso_encode_integer() --- Negative
+    expected = "-45";
+    actual = jso_encode_integer(-45);
+    assert_equal(expected, actual, "jso_encode_integer() failed to encode negative integer!");
+    
+    //jso_encode_integer() --- Zero
+    expected = "0";
+    actual = jso_encode_integer(0);
+    assert_equal(expected, actual, "jso_encode_integer() failed to encode zero!");
+    
+    //jso_encode_boolean() --- true
+    expected = "true";
+    actual = jso_encode_boolean(true);
+    assert_equal(expected, actual, "jso_encode_boolean() failed to encode true!");
+    
+    //jso_encode_boolean() --- false
+    expected = "false";
+    actual = jso_encode_boolean(false);
+    assert_equal(expected, actual, "jso_encode_boolean() failed to encode false!");
+    
+    //jso_encode_string() --- Simple string
+    expected = '"waahoo"';
+    actual = jso_encode_string("waahoo");
+    assert_equal(expected, actual, "jso_encode_string() failed to encode simple string!");
+    
+    //jso_encode_string() --- Empty string
+    expected = '""';
+    actual = jso_encode_string("");
+    assert_equal(expected, actual, "jso_encode_string() failed to encode empty string!");
+    
+    //jso_encode_string() --- Basic escape characters
+    expected = '"\\\"\b\f\n\r\t"';
+    actual = jso_encode_string('\"' + chr(8) + chr(12) + chr(10) + chr(13) + chr(9));
+    assert_equal(expected, actual, "jso_encode_string() failed to encode escape character string!");
+    
+    //jso_encode_map() --- Empty map
+    var empty_map;
+    empty_map = jso_new_map();
+    expected = "{}";
+    actual = jso_encode_map(empty_map);
+    assert_equal(expected, actual, "jso_encode_map() failed to encode empty map!");
+    jso_cleanup_map(empty_map);
+    
+    //jso_encode_map() --- One-element map
+    var one_map;
+    one_map = jso_new_map();
+    jso_map_add_string(one_map, "key", "value");
+    expected = '{"key":"value"}';
+    actual = jso_encode_map(one_map);
+    assert_equal(expected, actual, "jso_encode_map() failed to encode one-element map!");
+    jso_cleanup_map(one_map);
+    
+    //jso_encode_map() --- Multi-element map
+    var multi_map, ok1, ok2;
+    multi_map = jso_new_map();
+    jso_map_add_string(multi_map, "key1", "value\1");
+    jso_map_add_integer(multi_map, "key2", 2);
+    ok1 = '{"key1":"value\\1","key2":2}';
+    ok2 = '{"key2":2,"key1":"value\\1"}';
+    actual = jso_encode_map(multi_map);
+    assert_true((actual == ok1) || (actual == ok2), "jso_encode_map() failed to encode multi-element map!");
+    jso_cleanup_map(multi_map);
+    
+    //jso_encode_list() --- Empty list
+    var empty_list;
+    empty_list = jso_new_list();
+    expected = "[]";
+    actual = jso_encode_list(empty_list);
+    assert_equal(expected, actual, "jso_encode_list() failed to encode empty list!");
+    jso_cleanup_list(empty_list);
+    
+    //jso_encode_list() --- One-element nested list
+    var one_list;
+    one_list = jso_new_list();
+    jso_list_add_submap(one_list, jso_new_map());
+    expected = "[{}]";
+    actual = jso_encode_list(one_list);
+    assert_equal(expected, actual, "jso_encode_list() failed to encode one-element nested list!");
+    jso_cleanup_list(one_list);
+    
+    //jso_encode_list() --- Multi-element nested list
+    var multi_list, submap, sublist;
+    multi_list = jso_new_list();
+    submap = jso_new_map();
+        jso_map_add_string(submap, "1", "one");
+    jso_list_add_submap(multi_list, submap);
+    jso_list_add_integer(multi_list, 2);
+    sublist = jso_new_list();
+        jso_list_add_string(sublist, "three");
+        jso_list_add_boolean(sublist, true);
+    jso_list_add_sublist(multi_list, sublist);
+    expected = '[{"1":"one"},2,["three",true]]';
+    actual = jso_encode_list(multi_list);
+    assert_equal(expected, actual, "jso_encode_list() failed to encode one-element nested list!");
+    jso_cleanup_list(multi_list);
+}
+
+#define _test_jso_decode
+{
+    /**
+    _test_jso_decode(): Test core _jso_decode_*() functions.
+    The formatting is intentionally erratic here to simulate actual formatting deviations.
+    JSOnion version: 1.0.0d
+    */
+    var json, expected, actual, expected_structure, actual_structure;
+    
+    ////Primitives
+    
+    //_jso_decode_string(): Empty string
+    json = '""';
+    expected = __jso_gmt_tuple("", 3);
+    actual = _jso_decode_string(json, 1);
+    assert_equal(expected, actual, "_jso_decode_string() failed to decode an empty string!");
+    
+    //_jso_decode_string(): Small string
+    json = '"key"  ';
+    expected = __jso_gmt_tuple("key", 6);
+    actual = _jso_decode_string(json, 1);
+    assert_equal(expected, actual, "_jso_decode_string() failed to decode a small string!");
+    
+    //_jso_decode_string(): Simple string
+    json = '  "The quick brown fox jumps over the lazy dog." ';
+    expected = __jso_gmt_tuple("The quick brown fox jumps over the lazy dog.", 49);
+    actual = _jso_decode_string(json, 1);
+    assert_equal(expected, actual, "_jso_decode_string() failed to decode a simple string!");
+    
+    //_jso_decode_string(): Escape characters
+    json = ' "\"\\\b\f\n\r\t\u003A"';
+    expected = __jso_gmt_tuple('"\' + chr(8) + chr(12) + chr(10) + chr(13) + chr(9) + chr($003a), 24);
+    actual = _jso_decode_string(json, 1);
+    assert_equal(expected, actual, "_jso_decode_string() failed to decode a string with escape characters!");
+    
+    //_jso_decode_string(): Mixed characters
+    json = ' "\"\\\bWaahoo\f\n\r\tnegg\u003a"';
+    expected = __jso_gmt_tuple('"\' + chr(8) + "Waahoo" + chr(12) + chr(10) + chr(13) + chr(9) + "negg" + chr($003a), 34);
+    actual = _jso_decode_string(json, 1);
+    assert_equal(expected, actual, "_jso_decode_string() failed to decode a string with mixed characters!");
+    
+    //_jso_decode_boolean(): True
+    json = 'true';
+    expected = __jso_gmt_tuple(true, 5);
+    actual = _jso_decode_boolean(json, 1);
+    assert_equal(expected, actual, "_jso_decode_boolean() failed to decode true!");
+    
+    //_jso_decode_boolean(): False
+    json = '  false  ';
+    expected = __jso_gmt_tuple(false, 8);
+    actual = _jso_decode_boolean(json, 1);
+    assert_equal(expected, actual, "_jso_decode_boolean() failed to decode false!");
+    
+    //_jso_decode_real(): Zero
+    json = '0';
+    expected = __jso_gmt_tuple(0, 2);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode standard zero!");
+    
+    //_jso_decode_real(): Signed zero
+    json = '  +0 ';
+    expected = __jso_gmt_tuple(0, 5);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode signed zero!");
+    
+    //_jso_decode_real(): Signed zero with decimal digits
+    json = ' -0.000';
+    expected = __jso_gmt_tuple(0, 8);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode signed zero with decimal digits!");
+    
+    //_jso_decode_real(): Positive real
+    json = '3.14159';
+    expected = __jso_gmt_tuple(3.14159, 8);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode positive real number!");
+    
+    //_jso_decode_real(): Negative real
+    json = ' -2.71828';
+    expected = __jso_gmt_tuple(-2.71828, 10);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode negative real number!");
+    
+    //_jso_decode_real(): Positive real with positive exponent
+    json = ' 3.14159e2';
+    expected = __jso_gmt_tuple(3.14159*100, 11);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode positive real number with positive exponent!");
+    
+    //_jso_decode_real(): Negative real with positive exponent
+    json = ' -2.71828E2';
+    expected = __jso_gmt_tuple(-2.71828*100, 12);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode negative real number with positive exponent!");
+    
+    //_jso_decode_real(): Positive real with negative exponent
+    json = ' 314.159e-2';
+    expected = __jso_gmt_tuple(3.14159, 12);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode positive real number with negative exponent!");
+    
+    //_jso_decode_real(): Negative real with negative exponent
+    json = ' -271.828E-2';
+    expected = __jso_gmt_tuple(-2.71828, 13);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode negative real number with negative exponent!");
+    
+    //_jso_decode_real(): Positive integer
+    json = ' +1729';
+    expected = __jso_gmt_tuple(1729, 7);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode positive integer!");
+    
+    //_jso_decode_real(): Negative integer
+    json = '-583';
+    expected = __jso_gmt_tuple(-583, 5);
+    actual = _jso_decode_real(json, 1);
+    assert_equal(expected, actual, "_jso_decode_real() failed to decode negative integer!");
+    
+    //_jso_decode_integer(): Zero
+    json = ' 0  ';
+    expected = __jso_gmt_tuple(0, 3);
+    actual = _jso_decode_integer(json, 1);
+    assert_equal(expected, actual, "_jso_decode_integer() failed to decode zero!");
+    
+    //_jso_decode_integer(): Positive integer
+    json = ' 1729   ';
+    expected = __jso_gmt_tuple(1729, 6);
+    actual = _jso_decode_integer(json, 1);
+    assert_equal(expected, actual, "_jso_decode_integer() failed to decode positive integer!");
+    
+    //_jso_decode_integer(): Negative integer
+    json = '   -583';
+    expected = __jso_gmt_tuple(-583, 8);
+    actual = _jso_decode_integer(json, 1);
+    assert_equal(expected, actual, "_jso_decode_integer() failed to decode negative integer!");
+    
+    
+    ////Data structures
+    
+    //_jso_decode_map(): Empty map #1
+    json = '{}';
+    expected_structure = jso_new_map();
+    expected = __jso_gmt_tuple(expected_structure, 3);
+    actual = _jso_decode_map(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_map() didn't stop at the right place! (#1)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_map() didn't include the right prefix! (#1)");
+    assert_true(jso_compare_maps(expected_structure, actual_structure), "_jso_decode_map() failed to decode an empty map! (#1)");
+    jso_cleanup_map(expected_structure);
+    jso_cleanup_map(actual_structure);
+    
+    //_jso_decode_map(): Empty map #2
+    json = '  {  }  ';
+    expected_structure = jso_new_map();
+    expected = __jso_gmt_tuple(expected_structure, 7);
+    actual = _jso_decode_map(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_map() didn't stop at the right place! (#2)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_map() didn't include the right prefix! (#2)");
+    assert_true(jso_compare_maps(expected_structure, actual_structure), "_jso_decode_map() failed to decode an empty map! (#2)");
+    jso_cleanup_map(expected_structure);
+    jso_cleanup_map(actual_structure);
+    
+    //_jso_decode_map(): One-entry map
+    json = ' {"key": "value"} ';
+    expected_structure = jso_new_map();
+    expected = __jso_gmt_tuple(expected_structure, 18);
+    jso_map_add_string(expected_structure, "key", "value");
+    actual = _jso_decode_map(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_map() didn't stop at the right place! (one-entry map)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_map() didn't include the right prefix! (one-entry map)");
+    assert_true(jso_compare_maps(expected_structure, actual_structure), "_jso_decode_map() failed to decode a one-entry map!");
+    jso_cleanup_map(expected_structure);
+    jso_cleanup_map(actual_structure);
+    
+    //_jso_decode_map(): Multi-entry map
+    json = ' {"key"  :  "value", "pi":3.14,  "bool" : true} ';
+    expected_structure = jso_new_map();
+    expected = __jso_gmt_tuple(expected_structure, 48);
+    jso_map_add_string(expected_structure, "key", "value");
+    jso_map_add_real(expected_structure, "pi", 3.14);
+    jso_map_add_boolean(expected_structure, "bool", true);
+    actual = _jso_decode_map(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_map() didn't stop at the right place! (multi-entry map)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_map() didn't include the right prefix! (multi-entry map)");
+    assert_true(jso_compare_maps(expected_structure, actual_structure), "_jso_decode_map() failed to decode a multi-entry map!");
+    jso_cleanup_map(expected_structure);
+    jso_cleanup_map(actual_structure);
+    
+    //_jso_decode_map(): Nested maps
+    var submap;
+    json = '{ "waahoo" : { "woohah" : 3 } , "woohah" : 4 }';
+    expected_structure = jso_new_map();
+    expected = __jso_gmt_tuple(expected_structure, 47);
+    jso_map_add_integer(expected_structure, "woohah", 4);
+    submap = jso_new_map();
+    jso_map_add_integer(submap, "woohah", 3);
+    jso_map_add_submap(expected_structure, "waahoo", submap);
+    actual = _jso_decode_map(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_map() didn't stop at the right place! (nested map)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_map() didn't include the right prefix! (nested map)");
+    assert_true(jso_compare_maps(expected_structure, actual_structure), "_jso_decode_map() failed to decode a nested map!");
+    jso_cleanup_map(expected_structure);
+    jso_cleanup_map(actual_structure);
+    
+    //_jso_decode_map(): Map with nested lists
+    var sublist, subsublist;
+    json = '{ "waahoo" : [ "woohah", [true] ] , "woohah" : 4 }';
+    expected_structure = jso_new_map();
+    expected = __jso_gmt_tuple(expected_structure, 51);
+    jso_map_add_real(expected_structure, "woohah", 4);
+    sublist = jso_new_list();
+    jso_list_add_string(sublist, "woohah");
+    subsublist = jso_new_list();
+    jso_list_add_boolean(subsublist, true);
+    jso_list_add_sublist(sublist, subsublist);
+    jso_map_add_sublist(expected_structure, "waahoo", sublist);
+    actual = _jso_decode_map(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_map() didn't stop at the right place! (map with nested lists)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_map() didn't include the right prefix! (map with nested lists)");
+    assert_true(jso_compare_maps(expected_structure, actual_structure), "_jso_decode_map() failed to decode a map with nested lists!");
+    jso_cleanup_map(expected_structure);
+    jso_cleanup_map(actual_structure);
+    
+    //_jso_decode_map(): Mix-up nested map
+    var sublist;
+    json = ' { "waahoo" : [{}, "a", 1]  }';
+    expected_structure = jso_new_map();
+    expected = __jso_gmt_tuple(expected_structure, 30);
+    sublist = jso_new_list();
+    jso_list_add_submap(sublist, jso_new_map());
+    jso_list_add_string(sublist, "a");
+    jso_list_add_real(sublist, 1);
+    jso_map_add_sublist(expected_structure, "waahoo", sublist);
+    actual = _jso_decode_map(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_map() didn't stop at the right place! (mix-up nested map)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_map() didn't include the right prefix! (mix-up nested map)");
+    assert_true(jso_compare_maps(expected_structure, actual_structure), "_jso_decode_map() failed to decode a mix-up nested map!");
+    jso_cleanup_map(expected_structure);
+    jso_cleanup_map(actual_structure);
+    
+    //_jso_decode_list(): Empty list #1
+    json = '[]';
+    expected_structure = jso_new_list();
+    expected = __jso_gmt_tuple(expected_structure, 3);
+    actual = _jso_decode_list(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_list() didn't stop at the right place! (#1)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_list() didn't include the right prefix! (#1)");
+    assert_true(jso_compare_lists(expected_structure, actual_structure), "_jso_decode_list() failed to decode an empty list! (#1)");
+    jso_cleanup_list(expected_structure);
+    jso_cleanup_list(actual_structure)
+    
+    //_jso_decode_list(): Empty list #2
+    json = ' [  ] ';
+    expected_structure = jso_new_list();
+    expected = __jso_gmt_tuple(expected_structure, 6);
+    actual = _jso_decode_list(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_list() didn't stop at the right place! (#2)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_list() didn't include the right prefix! (#2)");
+    assert_true(jso_compare_lists(expected_structure, actual_structure), "_jso_decode_list() failed to decode an empty list! (#2)");
+    jso_cleanup_list(expected_structure);
+    jso_cleanup_list(actual_structure);
+    
+    //_jso_decode_list(): One-entry list
+    json = '[3]';
+    expected_structure = jso_new_list();
+    expected = __jso_gmt_tuple(expected_structure, 4);
+    jso_list_add_integer(expected_structure, 3);
+    actual = _jso_decode_list(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_list() didn't stop at the right place! (one-entry list)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_list() didn't include the right prefix! (one-entry list)");
+    assert_true(jso_compare_lists(expected_structure, actual_structure), "_jso_decode_list() failed to decode a one-entry list!");
+    jso_cleanup_list(expected_structure);
+    jso_cleanup_list(actual_structure);
+   
+    //_jso_decode_list(): Multi-entry list
+    json = ' [4,"multi-entry",true]';
+    expected_structure = jso_new_list();
+    expected = __jso_gmt_tuple(expected_structure, 24);
+    jso_list_add_real(expected_structure, 4);
+    jso_list_add_string(expected_structure, "multi-entry");
+    jso_list_add_boolean(expected_structure, true);
+    actual = _jso_decode_list(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_list() didn't stop at the right place! (multi-entry list)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_list() didn't include the right prefix! (multi-entry list)");
+    assert_true(jso_compare_lists(expected_structure, actual_structure), "_jso_decode_list() failed to decode a multi-entry list!");
+    jso_cleanup_list(expected_structure);
+    jso_cleanup_list(actual_structure);
+    
+    //_jso_decode_list(): Nested list
+    var sublist;
+    json = ' [ [], 3, false, ["waahoo"]]';
+    expected_structure = jso_new_list();
+    expected = __jso_gmt_tuple(expected_structure, 29);
+    jso_list_add_sublist(expected_structure, jso_new_list());
+    jso_list_add_integer(expected_structure, 3);
+    jso_list_add_boolean(expected_structure, false);
+    sublist = jso_new_list();
+    jso_list_add_string(sublist, "waahoo");
+    jso_list_add_sublist(expected_structure, sublist);
+    actual = _jso_decode_list(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_list() didn't stop at the right place! (nested list)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_list() didn't include the right prefix! (nested list)");
+    assert_true(jso_compare_lists(expected_structure, actual_structure), "_jso_decode_list() failed to decode a nested list!");
+    jso_cleanup_list(expected_structure);
+    jso_cleanup_list(actual_structure);
+    
+    //_jso_decode_list(): List with nested maps
+    var submap;
+    json = ' [3, false, { "waahoo":"woo"}]';
+    expected_structure = jso_new_list();
+    expected = __jso_gmt_tuple(expected_structure, 31);
+    jso_list_add_integer(expected_structure, 3);
+    jso_list_add_boolean(expected_structure, false);
+    submap = jso_new_map();
+    jso_map_add_string(submap, "waahoo", "woo");
+    jso_list_add_submap(expected_structure, submap);
+    actual = _jso_decode_list(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_list() didn't stop at the right place! (list with nested maps)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_list() didn't include the right prefix! (list with nested maps)");
+    assert_true(jso_compare_lists(expected_structure, actual_structure), "_jso_decode_list() failed to decode a list with nested maps!");
+    jso_cleanup_list(expected_structure);
+    jso_cleanup_list(actual_structure);
+    
+    //_jso_decode_list(): Mix-up nested list
+    var submap;
+    json = '[{}, {"a":[]}]';
+    expected_structure = jso_new_list();
+    expected = __jso_gmt_tuple(expected_structure, 15);
+    jso_list_add_submap(expected_structure, jso_new_map());
+    submap = jso_new_map();
+    jso_map_add_sublist(submap, "a", jso_new_list());
+    jso_list_add_submap(expected_structure, submap);
+    actual = _jso_decode_list(json, 1);
+    actual_structure = __jso_gmt_elem(actual, 0);
+    assert_equal(__jso_gmt_elem(expected, 1), __jso_gmt_elem(actual, 1), "_jso_decode_list() didn't stop at the right place! (mix-up nested list)");
+    assert_equal(actual_structure, __jso_gmt_elem(actual, 0), "_jso_decode_list() didn't include the right prefix! (mix-up nested list)");
+    assert_true(jso_compare_lists(expected_structure, actual_structure), "_jso_decode_list() failed to decode a mix-up nested list!");
+    jso_cleanup_list(expected_structure);
+    jso_cleanup_list(actual_structure);
+}
+
+#define _test_jso_compare
+{
+    /**
+    _test_jso_compare(): Test basic jso_compare_*() functions.
+    JSOnion version: 1.0.0d
+    */
+    var a, b;
+    
+    //jso_compare_maps(): Empty maps should equal each other
+    a = jso_new_map();
+    b = jso_new_map();
+    assert_true(jso_compare_maps(a, b), "Empty maps should equal each other. (#1)");
+    assert_true(jso_compare_maps(b, a), "Empty maps should equal each other. (#2)");
+    jso_cleanup_map(a);
+    jso_cleanup_map(b);
+    
+    //jso_compare_maps(): An empty map should not equal a filled map
+    a = jso_new_map();
+    b = jso_new_map();
+    jso_map_add_string(b, "junk", "info");
+    jso_map_add_integer(b, "taxi", 1729);
+    assert_false(jso_compare_maps(a, b), "An empty map should not equal a filled map. (#1)");
+    assert_false(jso_compare_maps(b, a), "An empty map should not equal a filled map. (#2)");
+    jso_cleanup_map(a);
+    jso_cleanup_map(b);
+    
+    //jso_compare_maps(): Maps with same content entered in different orders should equal each other
+    a = jso_new_map();
+    b = jso_new_map();
+    jso_map_add_real(a, "A", 1);
+    jso_map_add_real(a, "B", 2);
+    jso_map_add_real(a, "C", 3);
+    jso_map_add_real(b, "C", 3);
+    jso_map_add_real(b, "A", 1);
+    jso_map_add_real(b, "B", 2);
+    assert_true(jso_compare_maps(a, b), "Maps with same content entered in different orders should equal each other. (#1)");
+    assert_true(jso_compare_maps(b, a), "Maps with same content entered in different orders should equal each other. (#2)");
+    jso_cleanup_map(a);
+    jso_cleanup_map(b);
+    
+    //jso_compare_maps(): Maps with different keys should not equal each other
+    a = jso_new_map();
+    b = jso_new_map();
+    jso_map_add_real(a, "A", 1);
+    jso_map_add_real(a, "B", 2);
+    jso_map_add_real(a, "C", 3);
+    jso_map_add_real(b, "D", 3);
+    jso_map_add_real(b, "A", 1);
+    jso_map_add_real(b, "B", 2);
+    assert_false(jso_compare_maps(a, b), "Maps with different keys should not equal each other. (#1)");
+    assert_false(jso_compare_maps(b, a), "Maps with different keys should not equal each other. (#2)");
+    jso_cleanup_map(a);
+    jso_cleanup_map(b);
+    
+    //jso_compare_maps(): Maps with different values should not equal each other
+    a = jso_new_map();
+    b = jso_new_map();
+    jso_map_add_real(a, "A", 5);
+    jso_map_add_real(a, "B", 6);
+    jso_map_add_real(a, "C", 9);
+    jso_map_add_real(b, "A", 5);
+    jso_map_add_real(b, "B", 6);
+    jso_map_add_real(b, "C", 8);
+    assert_false(jso_compare_maps(a, b), "Maps with different values should not equal each other. (#1)");
+    assert_false(jso_compare_maps(b, a), "Maps with different values should not equal each other. (#2)");
+    jso_cleanup_map(a);
+    jso_cleanup_map(b);
+    
+    //jso_compare_maps(): Maps with corresponding values of different types should not equal each other, and should not crash.
+    a = jso_new_map();
+    b = jso_new_map();
+    jso_map_add_real(a, "A", 5);
+    jso_map_add_real(a, "B", 6);
+    jso_map_add_real(a, "C", 8);
+    jso_map_add_real(b, "A", 5);
+    jso_map_add_string(b, "B", "six");
+    jso_map_add_real(b, "C", 8);
+    assert_false(jso_compare_maps(a, b), "Maps with corresponding values of different types should not equal each other, and should not crash. (#1)");
+    assert_false(jso_compare_maps(b, a), "Maps with corresponding values of different types should not equal each other, and should not crash. (#2)");
+    jso_cleanup_map(a);
+    jso_cleanup_map(b);
+    
+    //jso_compare_lists(): Empty lists should equal each other
+    a = jso_new_list();
+    b = jso_new_list();
+    assert_true(jso_compare_lists(a, b), "Empty lists should equal each other. (#1)");
+    assert_true(jso_compare_lists(b, a), "Empty lists should equal each other. (#2)");
+    jso_cleanup_list(a);
+    jso_cleanup_list(b);
+    
+    //jso_compare_lists(): An empty list should not equal a filled list
+    a = jso_new_list();
+    b = jso_new_list();
+    jso_list_add_string(b, "junk");
+    jso_list_add_integer(b, 1729);
+    assert_false(jso_compare_lists(a, b), "An empty list should not equal a filled list. (#1)");
+    assert_false(jso_compare_lists(b, a), "An empty list should not equal a filled list. (#2)");
+    jso_cleanup_list(a);
+    jso_cleanup_list(b);
+    
+    //jso_compare_lists(): Lists with same content entered in different orders should not equal each other
+    a = jso_new_list();
+    b = jso_new_list();
+    jso_list_add_real(a, 1);
+    jso_list_add_real(a, 2);
+    jso_list_add_real(a, 3);
+    jso_list_add_real(b, 3);
+    jso_list_add_real(b, 1);
+    jso_list_add_real(b, 2);
+    assert_false(jso_compare_lists(a, b), "Lists with same content entered in different orders should not equal each other. (#1)");
+    assert_false(jso_compare_lists(b, a), "Lists with same content entered in different orders should not equal each other. (#2)");
+    jso_cleanup_list(a);
+    jso_cleanup_list(b);
+    
+    //jso_compare_lists(): Lists with corresponding entries of different types should not equal each other, should also not crash.
+    a = jso_new_list();
+    b = jso_new_list();
+    jso_list_add_real(a, 1);
+    jso_list_add_real(a, 2);
+    jso_list_add_real(a, 3);
+    jso_list_add_real(b, 1);
+    jso_list_add_string(b, "two");
+    jso_list_add_real(b, 3);
+    assert_false(jso_compare_lists(a, b), "Lists with corresponding entries of different types should not equal each other, should also not crash. (#1)");
+    assert_false(jso_compare_lists(b, a), "Lists with corresponding entries of different types should not equal each other, should also not crash. (#2)");
+    jso_cleanup_list(a);
+    jso_cleanup_list(b);
+}
+
+#define _test_jso_lookup
+{
+    /**
+    _test_jso_lookup(): Test core jso_*_lookup() and jso_*_check() functions for nested structures.
+    JSOnion version: 1.0.0d
+    */
+    var json, structure, expected, actual;
+    
+    //jso_map_check(): Single argument --- exists
+    json = '{ "one" : 1, "two" : 2, "three" : 3 }';
+    structure = jso_decode_map(json);
+    assert_true(jso_map_check(structure, "one"), "jso_map_check() failed to find existing entry! (single argument)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_lookup(): Single argument --- exists
+    json = '{ "one" : 1, "two" : 2, "three" : 3 }';
+    structure = jso_decode_map(json);
+    expected = 1;
+    actual = jso_map_lookup(structure, "one")
+    assert_equal(expected, actual, "jso_map_lookup() found the wrong entry! (single argument)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_lookup_type(): Single argument --- exists
+    json = '{ "one" : -1, "two" : true, "three" : "trap" }';
+    structure = jso_decode_map(json);
+    expected = jso_type_real;
+    actual = jso_map_lookup_type(structure, "one")
+    assert_equal(expected, actual, "jso_map_lookup_type() found the wrong type! (single argument)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_check(): Single argument --- doesn't exist
+    json = '{ "one" : 1, "two" : 2, "three" : 3 }';
+    structure = jso_decode_map(json);
+    assert_false(jso_map_check(structure, "four"), "jso_map_check() found an inexistent entry! (single argument)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_check(): Single argument --- doesn't exist
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : { "A":true, "B":false } }';
+    structure = jso_decode_map(json);
+    assert_false(jso_map_check(structure, "A"), "jso_map_check() found an inexistent entry! (single argument, nested)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_check(): Multiple arguments (recurse) --- exists
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : { "A":true, "B":false } }';
+    structure = jso_decode_map(json);
+    assert_true(jso_map_check(structure, "four", "A"), "jso_map_check() failed to find existing entry! (multiple arguments)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_lookup(): Multiple arguments (recurse) --- exists
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : { "A":true, "B":false } }';
+    structure = jso_decode_map(json);
+    expected = true;
+    actual = jso_map_lookup(structure, "four", "A");
+    assert_equal(expected, actual, "jso_map_lookup() found the wrong entry! (multiple arguments)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_lookup_type(): Multiple arguments (recurse) --- exists
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : { "A":true, "B":"trap" } }';
+    structure = jso_decode_map(json);
+    expected = jso_type_boolean;
+    actual = jso_map_lookup_type(structure, "four", "A");
+    assert_equal(expected, actual, "jso_map_lookup_type() found the wrong type! (multiple arguments)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_check(): Multiple arguments (recurse) --- doesn't exist
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : { "A":true, "B":false } }';
+    structure = jso_decode_map(json);
+    assert_false(jso_map_check(structure, "four", "C"), "jso_map_check() found an inexistent entry! (multiple arguments, 1)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_check(): Multiple arguments (recurse) --- doesn't exist
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : { "A":true, "B":false } }';
+    structure = jso_decode_map(json);
+    assert_false(jso_map_check(structure, "three", ""), "jso_map_check() found an inexistent entry! (multiple arguments, 2)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_check(): Multiple arguments with nested list --- exists
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : [ "A", true, ["B", false] ] }';
+    structure = jso_decode_map(json);
+    assert_true(jso_map_check(structure, "four", 2, 1), "jso_map_check() failed to find an existing entry! (multiple arguments, nested)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_lookup(): Multiple arguments with nested list --- exists
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : [ "A", true, ["B", false] ] }';
+    structure = jso_decode_map(json);
+    expected = false;
+    actual = jso_map_lookup(structure, "four", 2, 1);
+    assert_equal(expected, actual, "jso_map_lookup() failed to find an existing entry! (multiple arguments, nested)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_lookup_type(): Multiple arguments with nested list --- exists
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : [ "A", true, [false, "false"] ] }';
+    structure = jso_decode_map(json);
+    expected = jso_type_string;
+    actual = jso_map_lookup_type(structure, "four", 2, 1);
+    assert_equal(expected, actual, "jso_map_lookup_type() found the wrong type! (multiple arguments, nested)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_check(): Multiple arguments with nested list --- wrong type
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : [ "A", true, ["B", false] ] }';
+    structure = jso_decode_map(json);
+    assert_false(jso_map_check(structure, "four", "A", 1), "jso_map_check() found an inexistent entry! (multiple arguments, nested, wrong type)");
+    jso_cleanup_map(structure);
+    
+    //jso_map_check(): Multiple arguments with nested list --- index overflow
+    json = '{ "one" : 1, "two" : 2, "three" : 3, "four" : [ "A", true, ["B", false] ] }';
+    structure = jso_decode_map(json);
+    assert_false(jso_map_check(structure, "four", 2, 3), "jso_map_check() found an inexistent entry! (multiple arguments, nested, index overflow)");
+    jso_cleanup_map(structure);
+    
+    //jso_list_check(): Single argument --- exists
+    json = '["one", 2, "three", true, 5]';
+    structure = jso_decode_list(json);
+    assert_true(jso_list_check(structure, 2), "jso_list_check() failed to find an existing index! (single argument)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_lookup(): Single argument --- exists
+    json = '["one", 2, "three", true, 5]';
+    structure = jso_decode_list(json);
+    expected = "three";
+    actual = jso_list_lookup(structure, 2);
+    assert_equal(expected, actual, "jso_list_lookup() found the wrong index! (single argument)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_lookup_type(): Single argument --- exists
+    json = '["one", 2, "three", true, 5]';
+    structure = jso_decode_list(json);
+    expected = jso_type_string;
+    actual = jso_list_lookup_type(structure, 2);
+    assert_equal(expected, actual, "jso_list_lookup_type() found the wrong type! (single argument)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_check(): Single argument --- doesn't exist
+    json = '["one", 2, "three", true, 5]';
+    structure = jso_decode_list(json);
+    assert_false(jso_list_check(structure, 5), "jso_list_check() found an inexistent index! (single argument)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_check(): Multiple arguments (recurse) --- exists
+    json = '["one", 2, ["three", 3], true, 5]';
+    structure = jso_decode_list(json);
+    assert_true(jso_list_check(structure, 2, 1), "jso_list_check() failed to find an existing index! (multiple arguments)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_lookup(): Multiple arguments (recurse) --- exists
+    json = '["one", 2, ["three", 3], true, 5]';
+    structure = jso_decode_list(json);
+    expected = 3;
+    actual = jso_list_lookup(structure, 2, 1);
+    assert_equal(expected, actual, "jso_list_lookup() failed to find an existing index! (multiple arguments)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_lookup_type(): Multiple arguments (recurse) --- exists
+    json = '["one", 2, ["three", 3], true, 5]';
+    structure = jso_decode_list(json);
+    expected = jso_type_real;
+    actual = jso_list_lookup_type(structure, 2, 1);
+    assert_equal(expected, actual, "jso_list_lookup_type() found the wrong type! (multiple arguments)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_check(): Multiple arguments (recurse) --- doesn't exist, inner index overflow
+    json = '["one", 2, ["three", 3], true, 5]';
+    structure = jso_decode_list(json);
+    assert_false(jso_list_check(structure, 2, 2), "jso_list_check() found an inexistent index! (multiple arguments, inner index overflow)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_check(): Multiple arguments (recurse) --- doesn't exist, trying to index single entry
+    json = '["one", 2, ["three", 3], true, 5]';
+    structure = jso_decode_list(json);
+    assert_false(jso_list_check(structure, 1, 0), "jso_list_check() found an inexistent index! (multiple arguments, indexing single entry)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_check(): Multiple arguments with nested map --- exists
+    json = '["one", 2, {"three":3}, true, 5]';
+    structure = jso_decode_list(json);
+    assert_true(jso_list_check(structure, 2, "three"), "jso_list_check() failed to find an existing entry! (multiple arguments, nested map)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_lookup(): Multiple arguments with nested map --- exists
+    json = '["one", 2, {"three":3}, true, 5]';
+    structure = jso_decode_list(json);
+    expected = 3;
+    actual = jso_list_lookup(structure, 2, "three");
+    assert_equal(expected, actual, "jso_list_lookup() failed to find an existing entry! (multiple arguments, nested map)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_lookup_type(): Multiple arguments with nested map --- exists
+    json = '["one", 2, {"three":false}, true, 5]';
+    structure = jso_decode_list(json);
+    expected = jso_type_boolean;
+    actual = jso_list_lookup_type(structure, 2, "three");
+    assert_equal(expected, actual, "jso_list_lookup_type() found the wrong type! (multiple arguments, nested map)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_exists(): Multiple arguments with nested map --- doesn't exist, key on single entry
+    json = '["one", 2, {"three":3}, true, 5]';
+    structure = jso_decode_list(json);
+    assert_false(jso_list_check(structure, 1, ""), "jso_list_check() found an inexistent entry! (multiple arguments, nested map, key on single entry)");
+    jso_cleanup_list(structure);
+    
+    //jso_list_exists(): Multiple arguments with nested map --- doesn't exist, bad key
+    json = '["one", 2, {"three":3}, true, 5]';
+    structure = jso_decode_list(json);
+    assert_false(jso_list_check(structure, 2, ""), "jso_list_check() found an inexistent entry! (multiple arguments, nested map, bad key)");
+    jso_cleanup_list(structure);
+}
+
+#define _test_jso_bugs
+{
+    /**
+    _test_jso_bugs(): Test reported bugs.
+    JSOnion version: 1.0.0d
+    */
+    var expected, actual;
+    
+    //jso_encode_map() --- One-element map
+    //Bug 1: Crash when encoding boolean-valued entries in maps, unknown variable jso_type_integer
+    var one_map;
+    one_map = jso_new_map();
+    jso_map_add_boolean(one_map, "true", true);
+    expected = '{"true":true}';
+    actual = jso_encode_map(one_map);
+    assert_equal(expected, actual, "jso_encode_map() failed to encode one-element map with boolean entry!");
+    jso_cleanup_map(one_map);
+}
+
diff --git a/samples/Game Maker Language/loadserverplugins.gml b/samples/Game Maker Language/loadserverplugins.gml
new file mode 100644
index 00000000..26a26758
--- /dev/null
+++ b/samples/Game Maker Language/loadserverplugins.gml	
@@ -0,0 +1,252 @@
+/*
+    Originally from /Source/gg2/Scripts/Plugins/loadserverplugins.gml in Gang Garrison 2
+
+    Copyright (C) 2008-2013 Faucet Software
+    http://www.ganggarrison.com
+
+    This program is free software; 
+    you can redistribute it and/or modify it under the terms of the GNU General Public License
+    as published by the Free Software Foundation; either version 3 of the License, or (at your option)
+    any later version.
+    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
+    without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+    See the GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License along with this program; if not,
+    see <http://www.gnu.org/licenses>.
+
+    Additional permission under GNU GPL version 3 section 7
+    If you modify this Program, or any covered work, by linking or combining it with the Game Maker runtime library, 
+    the 39dll library/extension, Hobbel's Download Manager DLL, or modified versions of these libraries,
+    the licensors of this Program grant you additional permission to convey the resulting work.
+*/
+
+// loads plugins from ganggarrison.com asked for by server
+// argument0 - comma separated plugin list (pluginname@md5hash)
+// returns true on success, false on failure
+var list, hashList, text, i, pluginname, pluginhash, realhash, url, handle, filesize, progress, tempfile, tempdir, failed, lastContact, isCached;
+
+failed = false;
+list = ds_list_create();
+lastContact = 0;
+isCached = false;
+isDebug = false;
+hashList = ds_list_create();
+
+// split plugin list string
+list = split(argument0, ',');
+
+// Split hashes from plugin names
+for (i = 0; i < ds_list_size(list); i += 1)
+{
+    text = ds_list_find_value(list, i);
+    pluginname = string_copy(text, 0, string_pos("@", text) - 1);
+    pluginhash = string_copy(text, string_pos("@", text) + 1, string_length(text) - string_pos("@", text));
+    ds_list_replace(list, i, pluginname);
+    ds_list_add(hashList, pluginhash);
+}
+
+// Check plugin names and check for duplicates
+for (i = 0; i < ds_list_size(list); i += 1)
+{
+    pluginname = ds_list_find_value(list, i);
+    
+    // invalid plugin name
+    if (!checkpluginname(pluginname))
+    {
+        show_message('Error loading server-sent plugins - invalid plugin name:#"' + pluginname + '"');
+        return false;
+    }
+    // is duplicate
+    else if (ds_list_find_index(list, pluginname) != i)
+    {
+        show_message('Error loading server-sent plugins - duplicate plugin:#"' + pluginname + '"');
+        return false;
+    }
+}
+
+// Download plugins
+for (i = 0; i < ds_list_size(list); i += 1)
+{
+    pluginname = ds_list_find_value(list, i);
+    pluginhash = ds_list_find_value(hashList, i);
+    isDebug = file_exists(working_directory + "\ServerPluginsDebug\" + pluginname + ".zip");
+    isCached = file_exists(working_directory + "\ServerPluginsCache\" + pluginname + "@" + pluginhash);
+    tempfile = temp_directory + "\" + pluginname + ".zip.tmp";
+    tempdir = temp_directory + "\" + pluginname + ".tmp";
+
+    // check to see if we have a local copy for debugging
+    if (isDebug)
+    {
+        file_copy(working_directory + "\ServerPluginsDebug\" + pluginname + ".zip", tempfile);
+        // show warning
+        if (global.isHost)
+        {
+            show_message(
+                "Warning: server-sent plugin '"
+                + pluginname
+                + "' is being loaded from ServerPluginsDebug. Make sure clients have the same version, else they may be unable to connect."
+            );
+        }
+        else
+        {
+            show_message(
+                "Warning: server-sent plugin '"
+                + pluginname
+                + "' is being loaded from ServerPluginsDebug. Make sure the server has the same version, else you may be unable to connect."
+            );
+        }
+    }
+    // otherwise, check if we have it cached
+    else if (isCached)
+    {
+        file_copy(working_directory + "\ServerPluginsCache\" + pluginname + "@" + pluginhash, tempfile);
+    }
+    // otherwise, download as usual
+    else
+    {
+        // construct the URL
+        // http://www.ganggarrison.com/plugins/$PLUGINNAME$@$PLUGINHASH$.zip)
+        url = PLUGIN_SOURCE + pluginname + "@" + pluginhash + ".zip";
+        
+        // let's make the download handle
+        handle = httpGet(url, -1);
+        
+        // download it
+        while (!httpRequestStatus(handle)) {
+            // prevent game locking up
+            io_handle();
+
+            httpRequestStep(handle);
+            
+            if (!global.isHost) {
+                // send ping if we haven't contacted server in 20 seconds
+                // we need to do this to keep the connection open
+                if (current_time-lastContact > 20000) {
+                    write_byte(global.serverSocket, PING);
+                    socket_send(global.serverSocket);
+                    lastContact = current_time;
+                }
+            }
+
+            // draw progress bar since they may be waiting a while
+            filesize = httpRequestResponseBodySize(handle);
+            progress = httpRequestResponseBodyProgress(handle);
+            draw_background_ext(background_index[0], 0, 0, background_xscale[0], background_yscale[0], 0, c_white, 1);
+            draw_set_color(c_white);
+            draw_set_alpha(1);
+            draw_set_halign(fa_left);
+            draw_rectangle(50, 550, 300, 560, 2);
+            draw_text(50, 530, "Downloading server-sent plugin " + string(i + 1) + "/" + string(ds_list_size(list)) + ' - "' + pluginname + '"');
+            if (filesize != -1)
+                draw_rectangle(50, 550, 50 + progress / filesize * 250, 560, 0);
+            screen_refresh();
+        }
+
+        // errored
+        if (httpRequestStatus(handle) == 2)
+        {
+            show_message('Error loading server-sent plugins - download failed for "' + pluginname + '":#' + httpRequestError(handle));
+            failed = true;
+            break;
+        }
+
+        // request failed
+        if (httpRequestStatusCode(handle) != 200)
+        {
+            show_message('Error loading server-sent plugins - download failed for "' + pluginname + '":#' + string(httpRequestStatusCode(handle)) + ' ' + httpRequestReasonPhrase(handle));
+            failed = true;
+            break;
+        }
+        else
+        {
+            write_buffer_to_file(httpRequestResponseBody(handle), tempfile);
+            if (!file_exists(tempfile))
+            {
+                show_message('Error loading server-sent plugins - download failed for "' + pluginname + '":# No such file?');
+                failed = true;
+                break;
+            }
+        }
+
+        httpRequestDestroy(handle);
+    }
+
+    // check file integrity
+    realhash = GG2DLL_compute_MD5(tempfile);
+    if (realhash != pluginhash)
+    {
+        show_message('Error loading server-sent plugins - integrity check failed (MD5 hash mismatch) for:#"' + pluginname + '"');
+        failed = true;
+        break;
+    }
+    
+    // don't try to cache debug plugins
+    if (!isDebug)
+    {
+        // add to cache if we don't already have it
+        if (!file_exists(working_directory + "\ServerPluginsCache\" + pluginname + "@" + pluginhash))
+        {
+            // make sure directory exists
+            if (!directory_exists(working_directory + "\ServerPluginsCache"))
+            {
+                directory_create(working_directory + "\ServerPluginsCache");
+            }
+            // store in cache
+            file_copy(tempfile, working_directory + "\ServerPluginsCache\" + pluginname + "@" + pluginhash);
+        }
+    }
+
+    // let's get 7-zip to extract the files
+    extractzip(tempfile, tempdir);
+    
+    // if the directory doesn't exist, extracting presumably failed
+    if (!directory_exists(tempdir))
+    {
+        show_message('Error loading server-sent plugins - extracting zip failed for:#"' + pluginname + '"');
+        failed = true;
+        break;
+    }
+}
+
+if (!failed)
+{
+    // Execute plugins
+    for (i = 0; i < ds_list_size(list); i += 1)
+    {
+        pluginname = ds_list_find_value(list, i);
+        tempdir = temp_directory + "\" + pluginname + ".tmp";
+        
+        // Debugging facility, so we know *which* plugin caused compile/execute error
+        fp = file_text_open_write(working_directory + "\last_plugin.log");
+        file_text_write_string(fp, pluginname);
+        file_text_close(fp);
+
+        // packetID is (i), so make queues for it
+        ds_map_add(global.pluginPacketBuffers, i, ds_queue_create());
+        ds_map_add(global.pluginPacketPlayers, i, ds_queue_create());
+
+        // Execute plugin
+        execute_file(
+            // the plugin's main gml file must be in the root of the zip
+            // it is called plugin.gml
+            tempdir + "\plugin.gml",
+            // the plugin needs to know where it is
+            // so the temporary directory is passed as first argument
+            tempdir,
+            // the plugin needs to know its packetID
+            // so it is passed as the second argument
+            i
+        );
+    }
+}
+
+// Delete last plugin log
+file_delete(working_directory + "\last_plugin.log");
+
+// Get rid of plugin list
+ds_list_destroy(list);
+
+// Get rid of plugin hash list
+ds_list_destroy(hashList);
+
+return !failed;
diff --git a/samples/Game Maker Language/processClientCommands.gml b/samples/Game Maker Language/processClientCommands.gml
new file mode 100644
index 00000000..6c241d4b
--- /dev/null
+++ b/samples/Game Maker Language/processClientCommands.gml	
@@ -0,0 +1,384 @@
+/*
+    Originally from /Source/gg2/Scripts/GameServer/processClientCommands.gml in Gang Garrison 2
+
+    Copyright (C) 2008-2013 Faucet Software
+    http://www.ganggarrison.com
+
+    This program is free software; 
+    you can redistribute it and/or modify it under the terms of the GNU General Public License
+    as published by the Free Software Foundation; either version 3 of the License, or (at your option)
+    any later version.
+    This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
+    without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+    See the GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License along with this program; if not,
+    see <http://www.gnu.org/licenses>.
+
+    Additional permission under GNU GPL version 3 section 7
+    If you modify this Program, or any covered work, by linking or combining it with the Game Maker runtime library, 
+    the 39dll library/extension, Hobbel's Download Manager DLL, or modified versions of these libraries,
+    the licensors of this Program grant you additional permission to convey the resulting work.
+*/
+
+var player, playerId, commandLimitRemaining;
+
+player = argument0;
+playerId = argument1;
+
+// To prevent players from flooding the server, limit the number of commands to process per step and player.
+commandLimitRemaining = 10;
+
+with(player) {
+    if(!variable_local_exists("commandReceiveState")) {
+        // 0: waiting for command byte.
+        // 1: waiting for command data length (1 byte)
+        // 2: waiting for command data.
+        commandReceiveState = 0;
+        commandReceiveExpectedBytes = 1;
+        commandReceiveCommand = 0;
+    }
+}
+
+while(commandLimitRemaining > 0) {
+    var socket;
+    socket = player.socket;
+    if(!tcp_receive(socket, player.commandReceiveExpectedBytes)) {
+        return 0;
+    }
+    
+    switch(player.commandReceiveState)
+    {
+    case 0:
+        player.commandReceiveCommand = read_ubyte(socket);
+        switch(commandBytes[player.commandReceiveCommand]) {
+        case commandBytesInvalidCommand:
+            // Invalid byte received. Wait for another command byte.
+            break;
+            
+        case commandBytesPrefixLength1:
+            player.commandReceiveState = 1;
+            player.commandReceiveExpectedBytes = 1;
+            break;
+
+        case commandBytesPrefixLength2:
+            player.commandReceiveState = 3;
+            player.commandReceiveExpectedBytes = 2;
+            break;
+
+        default:
+            player.commandReceiveState = 2;
+            player.commandReceiveExpectedBytes = commandBytes[player.commandReceiveCommand];
+            break;
+        }
+        break;
+        
+    case 1:
+        player.commandReceiveState = 2;
+        player.commandReceiveExpectedBytes = read_ubyte(socket);
+        break;
+
+    case 3:
+        player.commandReceiveState = 2;
+        player.commandReceiveExpectedBytes = read_ushort(socket);
+        break;
+        
+    case 2:
+        player.commandReceiveState = 0;
+        player.commandReceiveExpectedBytes = 1;
+        commandLimitRemaining -= 1;
+        
+        switch(player.commandReceiveCommand)
+        {
+        case PLAYER_LEAVE:
+            socket_destroy(player.socket);
+            player.socket = -1;
+            break;
+            
+        case PLAYER_CHANGECLASS:
+            var class;
+            class = read_ubyte(socket);
+            if(getCharacterObject(player.team, class) != -1)
+            {
+                if(player.object != -1)
+                {
+                    with(player.object)
+                    {
+                        if (collision_point(x,y,SpawnRoom,0,0) < 0)
+                        {
+                            if (!instance_exists(lastDamageDealer) || lastDamageDealer == player)
+                            {
+                                sendEventPlayerDeath(player, player, noone, BID_FAREWELL);
+                                doEventPlayerDeath(player, player, noone, BID_FAREWELL);
+                            }
+                            else
+                            {
+                                var assistant;
+                                assistant = secondToLastDamageDealer;
+                                if (lastDamageDealer.object)
+                                    if (lastDamageDealer.object.healer)
+                                        assistant = lastDamageDealer.object.healer;
+                                sendEventPlayerDeath(player, lastDamageDealer, assistant, FINISHED_OFF);
+                                doEventPlayerDeath(player, lastDamageDealer, assistant, FINISHED_OFF);
+                            }
+                        }
+                        else 
+                        instance_destroy(); 
+                        
+                    }
+                }
+                else if(player.alarm[5]<=0)
+                    player.alarm[5] = 1;
+                class = checkClasslimits(player, player.team, class);
+                player.class = class;
+                ServerPlayerChangeclass(playerId, player.class, global.sendBuffer);
+            }
+            break;
+            
+        case PLAYER_CHANGETEAM:
+            var newTeam, balance, redSuperiority;
+            newTeam = read_ubyte(socket);
+            
+            redSuperiority = 0   //calculate which team is bigger
+            with(Player)
+            {
+                if(team == TEAM_RED)
+                    redSuperiority += 1;
+                else if(team == TEAM_BLUE)
+                    redSuperiority -= 1;
+            }
+            if(redSuperiority > 0)
+                balance = TEAM_RED;
+            else if(redSuperiority < 0)
+                balance = TEAM_BLUE;
+            else
+                balance = -1;
+            
+            if(balance != newTeam)
+            {
+                if(getCharacterObject(newTeam, player.class) != -1 or newTeam==TEAM_SPECTATOR)
+                {  
+                    if(player.object != -1)
+                    {
+                        with(player.object)
+                        {
+                            if (!instance_exists(lastDamageDealer) || lastDamageDealer == player)
+                            {
+                                sendEventPlayerDeath(player, player, noone, BID_FAREWELL);
+                                doEventPlayerDeath(player, player, noone, BID_FAREWELL);
+                            }
+                            else
+                            {
+                                var assistant;
+                                assistant = secondToLastDamageDealer;
+                                if (lastDamageDealer.object)
+                                    if (lastDamageDealer.object.healer)
+                                        assistant = lastDamageDealer.object.healer;
+                                sendEventPlayerDeath(player, lastDamageDealer, assistant, FINISHED_OFF);
+                                doEventPlayerDeath(player, lastDamageDealer, assistant, FINISHED_OFF);
+                            }
+                        }
+                        player.alarm[5] = global.Server_Respawntime;
+                    }
+                    else if(player.alarm[5]<=0)
+                        player.alarm[5] = 1;                    
+                    var newClass;
+                    newClass = checkClasslimits(player, newTeam, player.class);
+                    if newClass != player.class
+                    {
+                        player.class = newClass;
+                        ServerPlayerChangeclass(playerId, player.class, global.sendBuffer);
+                    }
+                    player.team = newTeam;
+                    ServerPlayerChangeteam(playerId, player.team, global.sendBuffer);
+                    ServerBalanceTeams();
+                }
+            }
+            break;                   
+            
+        case CHAT_BUBBLE:
+            var bubbleImage;
+            bubbleImage = read_ubyte(socket);
+            if(global.aFirst) {
+                bubbleImage = 0;
+            }
+            write_ubyte(global.sendBuffer, CHAT_BUBBLE);
+            write_ubyte(global.sendBuffer, playerId);
+            write_ubyte(global.sendBuffer, bubbleImage);
+            
+            setChatBubble(player, bubbleImage);
+            break;
+            
+        case BUILD_SENTRY:
+            if(player.object != -1)
+            {
+                if(player.class == CLASS_ENGINEER
+                        and collision_circle(player.object.x, player.object.y, 50, Sentry, false, true) < 0
+                        and player.object.nutsNBolts == 100
+                        and (collision_point(player.object.x,player.object.y,SpawnRoom,0,0) < 0)
+                        and !player.sentry
+                        and !player.object.onCabinet)
+                {
+                    write_ubyte(global.sendBuffer, BUILD_SENTRY);
+                    write_ubyte(global.sendBuffer, playerId);
+                    write_ushort(global.serializeBuffer, round(player.object.x*5));
+                    write_ushort(global.serializeBuffer, round(player.object.y*5));
+                    write_byte(global.serializeBuffer, player.object.image_xscale);
+                    buildSentry(player, player.object.x, player.object.y, player.object.image_xscale);
+                }
+            }
+            break;                                       
+
+        case DESTROY_SENTRY:
+            with(player.sentry)
+                instance_destroy();
+            break;                     
+        
+        case DROP_INTEL:
+            if (player.object != -1)
+            {
+                if (player.object.intel)
+                {
+                    sendEventDropIntel(player);
+                    doEventDropIntel(player);
+                }
+            }
+            break;     
+              
+        case OMNOMNOMNOM:
+            if(player.object != -1) {
+                if(!player.humiliated
+                    and !player.object.taunting
+                    and !player.object.omnomnomnom
+                    and player.object.canEat
+                    and player.class==CLASS_HEAVY)
+                {                            
+                    write_ubyte(global.sendBuffer, OMNOMNOMNOM);
+                    write_ubyte(global.sendBuffer, playerId);
+                    with(player.object)
+                    {
+                        omnomnomnom = true;
+                        if player.team == TEAM_RED {
+                            omnomnomnomindex=0;
+                            omnomnomnomend=31;
+                        } else if player.team==TEAM_BLUE {
+                            omnomnomnomindex=32;
+                            omnomnomnomend=63;
+                        } 
+                        xscale=image_xscale;
+                    }             
+                }
+            }
+            break;
+             
+        case TOGGLE_ZOOM:
+            if player.object != -1 {
+                if player.class == CLASS_SNIPER {
+                    write_ubyte(global.sendBuffer, TOGGLE_ZOOM);
+                    write_ubyte(global.sendBuffer, playerId);
+                    toggleZoom(player.object);
+                }
+            }
+            break;
+                                                      
+        case PLAYER_CHANGENAME:
+            var nameLength;
+            nameLength = socket_receivebuffer_size(socket);
+            if(nameLength > MAX_PLAYERNAME_LENGTH)
+            {
+                write_ubyte(player.socket, KICK);
+                write_ubyte(player.socket, KICK_NAME);
+                socket_destroy(player.socket);
+                player.socket = -1;
+            }
+            else
+            {
+                with(player)
+                {
+                    if(variable_local_exists("lastNamechange")) 
+                        if(current_time - lastNamechange < 1000)
+                            break;
+                    lastNamechange = current_time;
+                    name = read_string(socket, nameLength);
+                    if(string_count("#",name) > 0)
+                    {
+                        name = "I <3 Bacon";
+                    }
+                    write_ubyte(global.sendBuffer, PLAYER_CHANGENAME);
+                    write_ubyte(global.sendBuffer, playerId);
+                    write_ubyte(global.sendBuffer, string_length(name));
+                    write_string(global.sendBuffer, name);
+                }
+            }
+            break;
+            
+        case INPUTSTATE:
+            if(player.object != -1)
+            {
+                with(player.object)
+                {
+                    keyState = read_ubyte(socket);
+                    netAimDirection = read_ushort(socket);
+                    aimDirection = netAimDirection*360/65536;
+                    event_user(1);
+                }
+            }
+            break;
+        
+        case REWARD_REQUEST:
+            player.rewardId = read_string(socket, socket_receivebuffer_size(socket));
+            player.challenge = rewardCreateChallenge();
+            
+            write_ubyte(socket, REWARD_CHALLENGE_CODE);
+            write_binstring(socket, player.challenge);
+            break;
+            
+        case REWARD_CHALLENGE_RESPONSE:
+            var answer, i, authbuffer;
+            answer = read_binstring(socket, 16);
+            
+            with(player)
+                if(variable_local_exists("challenge") and variable_local_exists("rewardId"))
+                    rewardAuthStart(player, answer, challenge, true, rewardId);
+           
+            break;
+
+        case PLUGIN_PACKET:
+            var packetID, buf, success;
+
+            packetID = read_ubyte(socket);
+            
+            // get packet data
+            buf = buffer_create();
+            write_buffer_part(buf, socket, socket_receivebuffer_size(socket));
+
+            // try to enqueue
+            success = _PluginPacketPush(packetID, buf, player);
+            
+            // if it returned false, packetID was invalid
+            if (!success)
+            {
+                // clear up buffer
+                buffer_destroy(buf);
+
+                // kick player
+                write_ubyte(player.socket, KICK);
+                write_ubyte(player.socket, KICK_BAD_PLUGIN_PACKET);
+                socket_destroy(player.socket);
+                player.socket = -1;
+            }
+            break;
+            
+        case CLIENT_SETTINGS:
+            var mirror;
+            mirror = read_ubyte(player.socket);
+            player.queueJump = mirror;
+            
+            write_ubyte(global.sendBuffer, CLIENT_SETTINGS);
+            write_ubyte(global.sendBuffer, playerId);
+            write_ubyte(global.sendBuffer, mirror);
+            break;
+        
+        }
+        break;
+    } 
+}
diff --git a/samples/Game Maker Language/scrInitLevel.gml b/samples/Game Maker Language/scrInitLevel.gml
new file mode 100644
index 00000000..af0cf274
--- /dev/null
+++ b/samples/Game Maker Language/scrInitLevel.gml	
@@ -0,0 +1,298 @@
+// Originally from /spelunky/Scripts/Level Generation/scrInitLevel.gml in the Spelunky Community Update Project
+
+//
+// scrInitLevel()
+//
+// Calls scrLevelGen(), scrRoomGen*(), and scrEntityGen() to build level.
+//
+
+/**********************************************************************************
+    Copyright (c) 2008, 2009 Derek Yu and Mossmouth, LLC
+    
+    This file is part of Spelunky.
+
+    You can redistribute and/or modify Spelunky, including its source code, under
+    the terms of the Spelunky User License.
+
+    Spelunky is distributed in the hope that it will be entertaining and useful,
+    but WITHOUT WARRANTY.  Please see the Spelunky User License for more details.
+
+    The Spelunky User License should be available in "Game Information", which
+    can be found in the Resource Explorer, or as an external file called COPYING.
+    If not, please obtain a new copy of Spelunky from <http://spelunkyworld.com/>
+    
+***********************************************************************************/
+
+global.levelType = 0;
+//global.currLevel = 16;
+if (global.currLevel > 4 and global.currLevel < 9) global.levelType = 1;
+if (global.currLevel > 8 and global.currLevel < 13) global.levelType = 2;
+if (global.currLevel > 12 and global.currLevel < 16) global.levelType = 3;
+if (global.currLevel == 16) global.levelType = 4;
+
+if (global.currLevel <= 1 or
+    global.currLevel == 5 or
+    global.currLevel == 9 or
+    global.currLevel == 13)
+{
+    global.hadDarkLevel = false;
+}
+
+// global.levelType = 3; // debug
+
+// DEBUG MODE //
+/*
+if (global.currLevel == 2) global.levelType = 4;
+if (global.currLevel == 3) global.levelType = 2;
+if (global.currLevel == 4) global.levelType = 3;
+if (global.currLevel == 5) global.levelType = 4;
+*/
+
+// global.levelType = 0;
+
+global.startRoomX = 0;
+global.startRoomY = 0;
+global.endRoomX = 0;
+global.endRoomY = 0;
+oGame.levelGen = false;
+
+// this is used to determine the path to the exit (generally no bombs required)
+for (i = 0; i < 4; i += 1)
+{
+    for (j = 0; j < 4; j += 1)
+    {
+        global.roomPath[i,j] = 0;
+    }
+}
+
+// side walls
+if (global.levelType == 4)
+    k = 54;
+else if (global.levelType == 2)
+    k = 38;
+else if (global.lake)
+    k = 41;
+else
+    k = 33;
+for (i = 0; i <= 42; i += 1)
+{
+    for (j = 0; j <= k; j += 1)
+    {
+        if (not isLevel())
+        {
+            i = 999;
+            j = 999;
+        }
+        else if (global.levelType == 2)
+        {
+            if (i*16 == 0 or
+                i*16 == 656 or
+                j*16 == 0)
+            {
+                obj = instance_create(i*16, j*16, oDark);
+                obj.invincible = true;
+                obj.sprite_index = sDark;
+            }
+        }
+        else if (global.levelType == 4)
+        {
+            if (i*16 == 0 or
+                i*16 == 656 or
+                j*16 == 0)
+            {
+                obj = instance_create(i*16, j*16, oTemple);
+                obj.invincible = true;
+                if (not global.cityOfGold) obj.sprite_index = sTemple;
+            }
+        }
+        else if (global.lake)
+        {
+            if (i*16 == 0 or
+                i*16 == 656 or
+                j*16 == 0 or
+                j*16 >= 656)
+            {
+                obj = instance_create(i*16, j*16, oLush); obj.sprite_index = sLush;
+                obj.invincible = true;
+            }
+        }
+        else if (i*16 == 0 or
+            i*16 == 656 or
+            j*16 == 0 or
+            j*16 >= 528)
+        {
+            if (global.levelType == 0) { obj = instance_create(i*16, j*16, oBrick); obj.sprite_index = sBrick; }
+            else if (global.levelType == 1) { obj = instance_create(i*16, j*16, oLush); obj.sprite_index = sLush; }
+            else { obj = instance_create(i*16, j*16, oTemple); if (not global.cityOfGold) obj.sprite_index = sTemple; }
+            obj.invincible = true;
+        }
+    }
+}
+
+if (global.levelType == 2)
+{
+    for (i = 0; i <= 42; i += 1)
+    {
+        instance_create(i*16, 40*16, oDark);
+        //instance_create(i*16, 35*16, oSpikes);
+    }
+}
+
+if (global.levelType == 3)
+{
+    background_index = bgTemple;
+}
+
+global.temp1 = global.gameStart;
+scrLevelGen();
+
+global.cemetary = false;
+if (global.levelType == 1 and rand(1,global.probCemetary) == 1) global.cemetary = true;
+
+with oRoom
+{
+    if (global.levelType == 0) scrRoomGen();
+    else if (global.levelType == 1)
+    {
+        if (global.blackMarket) scrRoomGenMarket();
+        else scrRoomGen2();
+    }
+    else if (global.levelType == 2)
+    {
+        if (global.yetiLair) scrRoomGenYeti();
+        else scrRoomGen3();
+    }
+    else if (global.levelType == 3) scrRoomGen4();
+    else scrRoomGen5();
+}
+
+global.darkLevel = false;
+//if (not global.hadDarkLevel and global.currLevel != 0 and global.levelType != 2 and global.currLevel != 16 and rand(1,1) == 1)
+if (not global.hadDarkLevel and not global.noDarkLevel and global.currLevel != 0 and global.currLevel != 1 and global.levelType != 2 and global.currLevel != 16 and rand(1,global.probDarkLevel) == 1)
+{
+    global.darkLevel = true;
+    global.hadDarkLevel = true;
+    //instance_create(oPlayer1.x, oPlayer1.y, oFlare);
+}
+
+if (global.blackMarket) global.darkLevel = false;
+
+global.genUdjatEye = false;
+if (not global.madeUdjatEye)
+{
+    if (global.currLevel == 2 and rand(1,3) == 1) global.genUdjatEye = true;
+    else if (global.currLevel == 3 and rand(1,2) == 1) global.genUdjatEye = true;
+    else if (global.currLevel == 4) global.genUdjatEye = true;
+}
+
+global.genMarketEntrance = false;
+if (not global.madeMarketEntrance)
+{
+    if (global.currLevel == 5 and rand(1,3) == 1) global.genMarketEntrance = true;
+    else if (global.currLevel == 6 and rand(1,2) == 1) global.genMarketEntrance = true;
+    else if (global.currLevel == 7) global.genMarketEntrance = true;
+}
+
+////////////////////////////
+// ENTITY / TREASURES
+////////////////////////////
+global.temp2 = global.gameStart;
+if (not isRoom("rTutorial") and not isRoom("rLoadLevel")) scrEntityGen();
+
+if (instance_exists(oEntrance) and not global.customLevel)
+{
+    oPlayer1.x = oEntrance.x+8;
+    oPlayer1.y = oEntrance.y+8;
+}
+
+if (global.darkLevel or
+    global.blackMarket or
+    global.snakePit or
+    global.cemetary or
+    global.lake or
+    global.yetiLair or
+    global.alienCraft or
+    global.sacrificePit or
+    global.cityOfGold)
+{
+    if (not isRoom("rLoadLevel"))
+    {
+        with oPlayer1 { alarm[0] = 10; }
+    }
+}
+
+if (global.levelType == 4) scrSetupWalls(864);
+else if (global.lake) scrSetupWalls(656);
+else scrSetupWalls(528);
+
+// add background details
+if (global.graphicsHigh)
+{
+    repeat(20)
+    {
+        // bg = instance_create(16*rand(1,42), 16*rand(1,33), oCaveBG);
+        if (global.levelType == 1 and rand(1,3) < 3)
+            tile_add(bgExtrasLush, 32*rand(0,1), 0, 32, 32, 16*rand(1,42), 16*rand(1,33), 10002);
+        else if (global.levelType == 2 and rand(1,3) < 3)
+            tile_add(bgExtrasIce, 32*rand(0,1), 0, 32, 32, 16*rand(1,42), 16*rand(1,33), 10002);
+        else if (global.levelType == 3 and rand(1,3) < 3)
+            tile_add(bgExtrasTemple, 32*rand(0,1), 0, 32, 32, 16*rand(1,42), 16*rand(1,33), 10002);
+        else
+            tile_add(bgExtras, 32*rand(0,1), 0, 32, 32, 16*rand(1,42), 16*rand(1,33), 10002);
+    }
+}
+
+oGame.levelGen = true;
+
+// generate angry shopkeeper at exit if murderer or thief
+if ((global.murderer or global.thiefLevel > 0) and isRealLevel())
+{
+    with oExit
+    {
+        if (type == "Exit")
+        {
+            obj = instance_create(x, y, oShopkeeper);
+            obj.status = 4;
+        }
+    }
+    // global.thiefLevel -= 1;
+}
+
+with oTreasure
+{
+    if (collision_point(x, y, oSolid, 0, 0))
+    {
+        obj = instance_place(x, y, oSolid);
+        if (obj.invincible) instance_destroy();
+    }
+}
+
+with oWater
+{
+    if (sprite_index == sWaterTop or sprite_index == sLavaTop)
+    {
+        scrCheckWaterTop();
+    }
+    /*
+        obj = instance_place(x-16, y, oWater);
+        if (instance_exists(obj))
+        {
+            if (obj.sprite_index == sWaterTop or obj.sprite_index == sLavaTop)
+            {
+                if (type == "Lava") sprite_index = sLavaTop;
+                else sprite_index = sWaterTop;
+            }
+        }
+        obj = instance_place(x+16, y, oWater);
+        if (instance_exists(obj))
+        {
+            if (obj.sprite_index == sWaterTop or obj.sprite_index == sLavaTop)
+            {
+                if (type == "Lava") sprite_index = sLavaTop;
+                else sprite_index = sWaterTop;
+            }
+        }
+    */
+}
+
+global.temp3 = global.gameStart;
diff --git a/samples/Gnuplot/dashcolor.1.gnu b/samples/Gnuplot/dashcolor.1.gnu
new file mode 100644
index 00000000..291747bd
--- /dev/null
+++ b/samples/Gnuplot/dashcolor.1.gnu
@@ -0,0 +1,22 @@
+# set terminal pngcairo  background "#ffffff" fontscale 1.0 dashed size 640, 480 
+# set output 'dashcolor.1.png'
+set label 1 "set style line 1 lt 2 lc rgb \"red\" lw 3" at -0.4, -0.25, 0 left norotate back textcolor rgb "red"  nopoint offset character 0, 0, 0
+set label 2 "set style line 2 lt 2 lc rgb \"orange\" lw 2" at -0.4, -0.35, 0 left norotate back textcolor rgb "orange"  nopoint offset character 0, 0, 0
+set label 3 "set style line 3 lt 2 lc rgb \"yellow\" lw 3" at -0.4, -0.45, 0 left norotate back textcolor rgb "yellow"  nopoint offset character 0, 0, 0
+set label 4 "set style line 4 lt 2 lc rgb \"green\" lw 2" at -0.4, -0.55, 0 left norotate back textcolor rgb "green"  nopoint offset character 0, 0, 0
+set label 5 "plot ... lt 1 lc 3 " at -0.4, -0.65, 0 left norotate back textcolor lt 3 nopoint offset character 0, 0, 0
+set label 6 "plot ... lt 3 lc 3 " at -0.4, -0.75, 0 left norotate back textcolor lt 3 nopoint offset character 0, 0, 0
+set label 7 "plot ... lt 5 lc 3 " at -0.4, -0.85, 0 left norotate back textcolor lt 3 nopoint offset character 0, 0, 0
+set style line 1  linetype 2 linecolor rgb "red"  linewidth 3.000 pointtype 2 pointsize default pointinterval 0
+set style line 2  linetype 2 linecolor rgb "orange"  linewidth 2.000 pointtype 2 pointsize default pointinterval 0
+set style line 3  linetype 2 linecolor rgb "yellow"  linewidth 3.000 pointtype 2 pointsize default pointinterval 0
+set style line 4  linetype 2 linecolor rgb "green"  linewidth 2.000 pointtype 2 pointsize default pointinterval 0
+set noxtics
+set noytics
+set title "Independent colors and dot/dash styles" 
+set xlabel "You will only see dashed lines if your current terminal setting permits it" 
+set xrange [ -0.500000 : 3.50000 ] noreverse nowriteback
+set yrange [ -1.00000 : 1.40000 ] noreverse nowriteback
+set bmargin  7
+unset colorbox
+plot cos(x)     ls 1 title 'ls 1',        cos(x-.2)  ls 2 title 'ls 2',     cos(x-.4)  ls 3 title 'ls 3',     cos(x-.6)  ls 4 title 'ls 4',      cos(x-.8)  lt 1 lc 3 title 'lt 1 lc 3',       cos(x-1.)  lt 3 lc 3 title 'lt 3 lc 3',       cos(x-1.2) lt 5 lc 3 title 'lt 5 lc 3'
diff --git a/samples/Gnuplot/histograms.2.gnu b/samples/Gnuplot/histograms.2.gnu
new file mode 100644
index 00000000..e268ce01
--- /dev/null
+++ b/samples/Gnuplot/histograms.2.gnu
@@ -0,0 +1,15 @@
+# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 
+# set output 'histograms.2.png'
+set boxwidth 0.9 absolute
+set style fill   solid 1.00 border lt -1
+set key inside right top vertical Right noreverse noenhanced autotitles nobox
+set style histogram clustered gap 1 title  offset character 0, 0, 0
+set datafile missing '-'
+set style data histograms
+set xtics border in scale 0,0 nomirror rotate by -45  offset character 0, 0, 0 autojustify
+set xtics  norangelimit font ",8"
+set xtics   ()
+set title "US immigration from Northern Europe\nPlot selected data columns as histogram of clustered boxes" 
+set yrange [ 0.00000 : 300000. ] noreverse nowriteback
+i = 22
+plot 'immigration.dat' using 6:xtic(1) ti col, '' u 12 ti col, '' u 13 ti col, '' u 14 ti col
diff --git a/samples/Gnuplot/rates.gp b/samples/Gnuplot/rates.gp
new file mode 100644
index 00000000..aad2a52e
--- /dev/null
+++ b/samples/Gnuplot/rates.gp
@@ -0,0 +1,14 @@
+#!/usr/bin/env gnuplot
+
+reset
+
+set terminal png
+set output 'rates100.png'
+
+set xlabel "A2A price"
+set ylabel "Response Rate"
+
+#set xr [0:5]
+#set yr [0:6]
+
+plot 'rates100.dat' pt 7 notitle
diff --git a/samples/Gnuplot/surface1.16.gnu b/samples/Gnuplot/surface1.16.gnu
new file mode 100644
index 00000000..dd1ffefa
--- /dev/null
+++ b/samples/Gnuplot/surface1.16.gnu
@@ -0,0 +1,40 @@
+# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 
+# set output 'surface1.16.png'
+set dummy u,v
+set label 1 "increasing v" at 6, 0, -1 left norotate back nopoint offset character 0, 0, 0
+set label 2 "u=0" at 5, 6.5, -1 left norotate back nopoint offset character 0, 0, 0
+set label 3 "u=1" at 5, 6.5, 0.100248 left norotate back nopoint offset character 0, 0, 0
+set arrow 1 from 5, -5, -1.2 to 5, 5, -1.2 head back nofilled linetype -1 linewidth 1.000
+set arrow 2 from 5, 6, -1 to 5, 5, -1 head back nofilled linetype -1 linewidth 1.000
+set arrow 3 from 5, 6, 0.100248 to 5, 5, 0.100248 head back nofilled linetype -1 linewidth 1.000
+set parametric
+set view 70, 20, 1, 1
+set samples 51, 51
+set isosamples 2, 33
+set hidden3d back offset 1 trianglepattern 3 undefined 1 altdiagonal bentover
+set ztics -1.00000,0.25,1.00000 norangelimit
+set title "\"fence plot\" using separate parametric surfaces" 
+set xlabel "X axis" 
+set xlabel  offset character -3, -2, 0 font "" textcolor lt -1 norotate
+set xrange [ -5.00000 : 5.00000 ] noreverse nowriteback
+set ylabel "Y axis" 
+set ylabel  offset character 3, -2, 0 font "" textcolor lt -1 rotate by -270
+set yrange [ -5.00000 : 5.00000 ] noreverse nowriteback
+set zlabel "Z axis" 
+set zlabel  offset character -5, 0, 0 font "" textcolor lt -1 norotate
+set zrange [ -1.00000 : 1.00000 ] noreverse nowriteback
+sinc(u,v) = sin(sqrt(u**2+v**2)) / sqrt(u**2+v**2)
+GPFUN_sinc = "sinc(u,v) = sin(sqrt(u**2+v**2)) / sqrt(u**2+v**2)"
+xx = 6.08888888888889
+dx = 1.10888888888889
+x0 = -5
+x1 = -3.89111111111111
+x2 = -2.78222222222222
+x3 = -1.67333333333333
+x4 = -0.564444444444444
+x5 = 0.544444444444445
+x6 = 1.65333333333333
+x7 = 2.76222222222222
+x8 = 3.87111111111111
+x9 = 4.98
+splot [u=0:1][v=-4.99:4.99] 	x0, v, (u<0.5) ? -1 : sinc(x0,v) notitle, 	x1, v, (u<0.5) ? -1 : sinc(x1,v) notitle, 	x2, v, (u<0.5) ? -1 : sinc(x2,v) notitle, 	x3, v, (u<0.5) ? -1 : sinc(x3,v) notitle, 	x4, v, (u<0.5) ? -1 : sinc(x4,v) notitle, 	x5, v, (u<0.5) ? -1 : sinc(x5,v) notitle, 	x6, v, (u<0.5) ? -1 : sinc(x6,v) notitle, 	x7, v, (u<0.5) ? -1 : sinc(x7,v) notitle, 	x8, v, (u<0.5) ? -1 : sinc(x8,v) notitle, 	x9, v, (u<0.5) ? -1 : sinc(x9,v) notitle
diff --git a/samples/Gnuplot/surface1.17.gnu b/samples/Gnuplot/surface1.17.gnu
new file mode 100644
index 00000000..3d272bc7
--- /dev/null
+++ b/samples/Gnuplot/surface1.17.gnu
@@ -0,0 +1,46 @@
+# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 
+# set output 'surface1.17.png'
+set dummy u,v
+set label 1 "increasing v" at 6, 0, -1 left norotate back nopoint offset character 0, 0, 0
+set label 2 "increasing u" at 0, -5, -1.5 left norotate back nopoint offset character 0, 0, 0
+set label 3 "floor(u)%3=0" at 5, 6.5, -1 left norotate back nopoint offset character 0, 0, 0
+set label 4 "floor(u)%3=1" at 5, 6.5, 0.100248 left norotate back nopoint offset character 0, 0, 0
+set arrow 1 from 5, -5, -1.2 to 5, 5, -1.2 head back nofilled linetype -1 linewidth 1.000
+set arrow 2 from -5, -5, -1.2 to 5, -5, -1.2 head back nofilled linetype -1 linewidth 1.000
+set arrow 3 from 5, 6, -1 to 5, 5, -1 head back nofilled linetype -1 linewidth 1.000
+set arrow 4 from 5, 6, 0.100248 to 5, 5, 0.100248 head back nofilled linetype -1 linewidth 1.000
+set parametric
+set view 70, 20, 1, 1
+set samples 51, 51
+set isosamples 30, 33
+set hidden3d back offset 1 trianglepattern 3 undefined 1 altdiagonal bentover
+set ztics -1.00000,0.25,1.00000 norangelimit
+set title "\"fence plot\" using single parametric surface with undefined points" 
+set xlabel "X axis" 
+set xlabel  offset character -3, -2, 0 font "" textcolor lt -1 norotate
+set xrange [ -5.00000 : 5.00000 ] noreverse nowriteback
+set ylabel "Y axis" 
+set ylabel  offset character 3, -2, 0 font "" textcolor lt -1 rotate by -270
+set yrange [ -5.00000 : 5.00000 ] noreverse nowriteback
+set zlabel "Z axis" 
+set zlabel  offset character -5, 0, 0 font "" textcolor lt -1 norotate
+set zrange [ -1.00000 : 1.00000 ] noreverse nowriteback
+sinc(u,v) = sin(sqrt(u**2+v**2)) / sqrt(u**2+v**2)
+GPFUN_sinc = "sinc(u,v) = sin(sqrt(u**2+v**2)) / sqrt(u**2+v**2)"
+xx = 6.08888888888889
+dx = 1.11
+x0 = -5
+x1 = -3.89111111111111
+x2 = -2.78222222222222
+x3 = -1.67333333333333
+x4 = -0.564444444444444
+x5 = 0.544444444444445
+x6 = 1.65333333333333
+x7 = 2.76222222222222
+x8 = 3.87111111111111
+x9 = 4.98
+xmin = -4.99
+xmax = 5
+n = 10
+zbase = -1
+splot [u=.5:3*n-.5][v=-4.99:4.99] 	 xmin+floor(u/3)*dx, v, ((floor(u)%3)==0) ? zbase : 			 (((floor(u)%3)==1) ? sinc(xmin+u/3.*dx,v) : 1/0) notitle
diff --git a/samples/Gnuplot/world2.1.gnu b/samples/Gnuplot/world2.1.gnu
new file mode 100644
index 00000000..53dc22b6
--- /dev/null
+++ b/samples/Gnuplot/world2.1.gnu
@@ -0,0 +1,21 @@
+# set terminal pngcairo  transparent enhanced font "arial,10" fontscale 1.0 size 500, 350 
+# set output 'world2.1.png'
+unset border
+set dummy u,v
+set angles degrees
+set parametric
+set view 60, 136, 1.22, 1.26
+set samples 64, 64
+set isosamples 13, 13
+set mapping spherical
+set noxtics
+set noytics
+set noztics
+set title "Labels colored by GeV plotted in spherical coordinate system" 
+set urange [ -90.0000 : 90.0000 ] noreverse nowriteback
+set vrange [ 0.00000 : 360.000 ] noreverse nowriteback
+set cblabel "GeV" 
+set cbrange [ 0.00000 : 8.00000 ] noreverse nowriteback
+set colorbox user
+set colorbox vertical origin screen 0.9, 0.2, 0 size screen 0.02, 0.75, 0 front bdefault
+splot cos(u)*cos(v),cos(u)*sin(v),sin(u) notitle with lines lt 5,       'world.dat' notitle with lines lt 2,       'srl.dat' using 3:2:(1):1:4 with labels notitle point pt 6 lw .1 left offset 1,0 font "Helvetica,7" tc pal
diff --git a/samples/Gosu/hello.gsp b/samples/Gosu/hello.gsp
deleted file mode 100644
index ce47b771..00000000
--- a/samples/Gosu/hello.gsp
+++ /dev/null
@@ -1 +0,0 @@
-print("hello")
\ No newline at end of file
diff --git a/samples/Grammatical Framework/Foods.gf b/samples/Grammatical Framework/Foods.gf
new file mode 100644
index 00000000..8ea02f39
--- /dev/null
+++ b/samples/Grammatical Framework/Foods.gf	
@@ -0,0 +1,15 @@
+-- (c) 2009 Aarne Ranta under LGPL
+
+abstract Foods = {
+  flags startcat = Comment ;
+  cat
+    Comment ; Item ; Kind ; Quality ;
+  fun
+    Pred : Item -> Quality -> Comment ;
+    This, That, These, Those : Kind -> Item ;
+    Mod : Quality -> Kind -> Kind ;
+    Wine, Cheese, Fish, Pizza : Kind ;
+    Very : Quality -> Quality ;
+    Fresh, Warm, Italian, 
+      Expensive, Delicious, Boring : Quality ;
+}
diff --git a/samples/Grammatical Framework/FoodsAfr.gf b/samples/Grammatical Framework/FoodsAfr.gf
new file mode 100644
index 00000000..d0226710
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsAfr.gf	
@@ -0,0 +1,79 @@
+-- (c) 2009 Laurette Pretorius Sr & Jr and Ansu Berg under LGPL
+
+concrete FoodsAfr of Foods = open Prelude, Predef in{
+
+	flags coding=utf8;
+
+	lincat
+		Comment = {s: Str} ;
+		Kind = {s: Number => Str} ;
+		Item = {s: Str ; n: Number} ;
+		Quality = {s: AdjAP => Str} ;
+
+	lin
+		Pred item quality = {s = item.s ++ "is" ++ (quality.s ! Predic)};
+		This kind = {s = "hierdie" ++ (kind.s ! Sg); n = Sg};
+		That kind = {s = "daardie" ++ (kind.s ! Sg); n = Sg};
+		These kind = {s = "hierdie" ++ (kind.s ! Pl); n = Pl};
+		Those kind = {s = "daardie" ++ (kind.s ! Pl); n = Pl};
+		Mod quality kind = {s = table{n => (quality.s ! Attr) ++ (kind.s!n)}};
+
+		Wine = declNoun_e "wyn";
+		Cheese = declNoun_aa "kaas";
+		Fish = declNoun_ss "vis";
+		Pizza = declNoun_s "pizza";
+
+		Very quality = veryAdj quality;
+
+		Fresh = regAdj "vars";
+		Warm = regAdj "warm";
+		Italian = smartAdj_e "Italiaans";
+		Expensive = regAdj "duur";
+		Delicious = smartAdj_e "heerlik";
+		Boring = smartAdj_e "vervelig";
+
+	param
+		AdjAP = Attr | Predic ;
+		Number = Sg | Pl ;
+
+	oper
+		--Noun operations (wyn, kaas, vis, pizza)
+
+		declNoun_aa: Str -> {s: Number => Str} = \x ->
+		let v = tk 2 x
+		in
+		{s = table{Sg => x ; Pl => v + (last x) +"e"}};
+
+		declNoun_e: Str -> {s: Number => Str} = \x -> {s = table{Sg => x ; Pl => x + "e"}} ;
+		declNoun_s: Str -> {s: Number => Str} = \x -> {s = table{Sg => x ; Pl => x + "s"}} ;
+
+		declNoun_ss: Str -> {s: Number => Str} = \x -> {s = table{Sg => x ; Pl => x + (last x) + "e"}} ;
+
+
+		--Adjective operations
+
+		mkAdj : Str -> Str -> {s: AdjAP => Str} = \x,y -> {s = table{Attr => x; Predic => y}};
+
+		declAdj_e : Str -> {s : AdjAP=> Str} = \x -> mkAdj (x + "e") x;
+		declAdj_g : Str -> {s : AdjAP=> Str} = \w ->
+			let v = init w
+			in mkAdj (v + "ë") w ;
+
+		declAdj_oog : Str -> {s : AdjAP=> Str} = \w ->
+			let v = init w
+			in
+				let i = init v
+				in mkAdj (i + "ë") w ;
+
+		regAdj : Str -> {s : AdjAP=> Str} = \x -> mkAdj x x;
+
+		veryAdj : {s: AdjAP => Str} -> {s : AdjAP=> Str} =  \x -> {s = table{a => "baie" ++ (x.s!a)}};
+
+
+		smartAdj_e : Str -> {s : AdjAP=> Str} = \a -> case a of
+		{
+			_ + "oog" 			   		=> declAdj_oog a ;
+			_ + ("e" | "ie" | "o" | "oe") + "g" 	=> declAdj_g a ;
+			_					   	=> declAdj_e a
+		};
+}
diff --git a/samples/Grammatical Framework/FoodsAmh.gf b/samples/Grammatical Framework/FoodsAmh.gf
new file mode 100644
index 00000000..e8915d86
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsAmh.gf	
@@ -0,0 +1,21 @@
+concrete FoodsAmh of Foods ={
+ flags coding = utf8;
+ lincat
+  Comment,Item,Kind,Quality = Str;
+ lin
+  Pred item quality = item ++ quality++ "ነው::" ;
+  This kind = "ይህ" ++ kind;
+  That kind = "ያ" ++ kind;
+  Mod quality kind = quality ++ kind;
+  Wine = "ወይን";
+  Cheese = "አይብ";
+  Fish = "ዓሳ";
+  Very quality = "በጣም" ++ quality;
+  Fresh = "አዲስ";
+  Warm = "ትኩስ";
+  Italian = "የጥልያን";
+  Expensive = "ውድ";
+  Delicious = "ጣፋጭ";
+  Boring = "አስቀያሚ";
+  
+}   
\ No newline at end of file
diff --git a/samples/Grammatical Framework/FoodsBul.gf b/samples/Grammatical Framework/FoodsBul.gf
new file mode 100644
index 00000000..ac912766
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsBul.gf	
@@ -0,0 +1,43 @@
+-- (c) 2009 Krasimir Angelov under LGPL
+
+concrete FoodsBul of Foods = {
+  
+  flags
+    coding = utf8;
+
+  param
+    Gender = Masc | Fem | Neutr;
+    Number = Sg | Pl;
+    Agr    = ASg Gender | APl ;
+
+  lincat
+    Comment = Str ;
+    Quality = {s : Agr => Str} ;
+    Item = {s : Str; a : Agr} ;
+    Kind = {s : Number => Str; g : Gender} ;
+
+  lin
+    Pred item qual = item.s ++ case item.a of {ASg _ => "е"; APl => "са"} ++ qual.s ! item.a ;
+    
+    This  kind = {s=case kind.g of {Masc=>"този"; Fem=>"тази";  Neutr=>"това" } ++ kind.s ! Sg; a=ASg kind.g} ;
+    That  kind = {s=case kind.g of {Masc=>"онзи"; Fem=>"онази"; Neutr=>"онова"} ++ kind.s ! Sg; a=ASg kind.g} ;
+    These kind = {s="тези"  ++ kind.s ! Pl; a=APl} ;
+    Those kind = {s="онези" ++ kind.s ! Pl; a=APl} ;
+    
+    Mod qual kind = {s=\\n => qual.s ! (case n of {Sg => ASg kind.g; Pl => APl}) ++ kind.s ! n; g=kind.g} ;
+
+    Wine   = {s = table {Sg => "вино";   Pl => "вина"};   g = Neutr};
+    Cheese = {s = table {Sg => "сирене"; Pl => "сирена"}; g = Neutr};
+    Fish   = {s = table {Sg => "риба";   Pl => "риби"};   g = Fem};
+    Pizza  = {s = table {Sg => "пица";   Pl => "пици"};   g = Fem};
+
+    Very qual = {s = \\g => "много" ++ qual.s ! g};
+
+    Fresh     = {s = table {ASg Masc => "свеж";        ASg Fem => "свежа";       ASg Neutr => "свежо";       APl => "свежи"}};
+    Warm      = {s = table {ASg Masc => "горещ";       ASg Fem => "гореща";      ASg Neutr => "горещо";      APl => "горещи"}};
+    Italian   = {s = table {ASg Masc => "италиански";  ASg Fem => "италианска";  ASg Neutr => "италианско";  APl => "италиански"}}; 
+    Expensive = {s = table {ASg Masc => "скъп";        ASg Fem => "скъпа";       ASg Neutr => "скъпо";       APl => "скъпи"}};
+    Delicious = {s = table {ASg Masc => "превъзходен"; ASg Fem => "превъзходна"; ASg Neutr => "превъзходно"; APl => "превъзходни"}};
+    Boring    = {s = table {ASg Masc => "еднообразен"; ASg Fem => "еднообразна"; ASg Neutr => "еднообразно"; APl => "еднообразни"}};
+    
+}
diff --git a/samples/Grammatical Framework/FoodsCat.gf b/samples/Grammatical Framework/FoodsCat.gf
new file mode 100644
index 00000000..5ad38d0d
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsCat.gf	
@@ -0,0 +1,7 @@
+--# -path=.:present
+
+-- (c) 2009 Jordi Saludes under LGPL
+
+concrete FoodsCat of Foods = FoodsI with 
+  (Syntax = SyntaxCat),
+  (LexFoods = LexFoodsCat) ;
diff --git a/samples/Grammatical Framework/FoodsChi.gf b/samples/Grammatical Framework/FoodsChi.gf
new file mode 100644
index 00000000..163aa0eb
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsChi.gf	
@@ -0,0 +1,35 @@
+concrete FoodsChi of Foods = {
+flags coding = utf8 ;
+lincat
+    Comment, Item = Str ;
+    Kind = {s,c : Str} ; 
+    Quality = {s,p : Str} ;
+lin
+    Pred item quality = item ++ "是" ++ quality.s ++ quality.p ;
+    This kind = "这" ++ kind.c ++ kind.s ;
+    That kind = "那" ++ kind.c ++ kind.s ;
+    These kind = "这" ++ "些" ++ kind.s ;
+    Those kind = "那" ++ "些" ++ kind.s ;
+    Mod quality kind = {
+      s = quality.s ++ quality.p ++ kind.s ;
+      c = kind.c
+      } ;
+    Wine  = geKind "酒" ;
+    Pizza = geKind "比 萨 饼" ;
+    Cheese  = geKind "奶 酪" ;
+    Fish  = geKind "鱼" ;
+    Very quality = longQuality ("非 常" ++ quality.s) ;
+    Fresh  = longQuality "新 鲜" ;
+    Warm  = longQuality "温 热" ;
+    Italian  = longQuality "意 大 利 式" ;
+    Expensive  = longQuality "昂 贵" ;
+    Delicious  = longQuality "美 味" ;
+    Boring  = longQuality "难 吃" ;
+oper
+    mkKind : Str -> Str -> {s,c : Str} = \s,c ->
+      {s = s ; c = c} ;
+    geKind : Str -> {s,c : Str} = \s ->
+      mkKind s "个" ;
+    longQuality : Str -> {s,p : Str} = \s ->
+      {s = s ; p = "的"} ;
+}
diff --git a/samples/Grammatical Framework/FoodsCze.gf b/samples/Grammatical Framework/FoodsCze.gf
new file mode 100644
index 00000000..3fec6814
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsCze.gf	
@@ -0,0 +1,35 @@
+-- (c) 2011 Katerina Bohmova under LGPL
+
+concrete FoodsCze of Foods = open ResCze in {
+  flags 
+    coding = utf8 ;
+  lincat
+    Comment = {s : Str} ; 
+    Quality = Adjective ; 
+    Kind = Noun ; 
+    Item = NounPhrase ;
+  lin
+    Pred item quality = 
+      {s = item.s ++ copula ! item.n ++ 
+           quality.s ! item.g ! item.n} ;
+    This  = det Sg "tento" "tato" "toto" ;
+    That  = det Sg "tamten" "tamta" "tamto" ;
+    These = det Pl "tyto" "tyto" "tato" ;
+    Those = det Pl "tamty" "tamty" "tamta" ;
+    Mod quality kind = {
+      s = \\n => quality.s ! kind.g ! n ++ kind.s ! n ;
+      g = kind.g
+      } ;
+    Wine = noun "víno" "vína" Neutr ;
+    Cheese = noun "sýr" "sýry" Masc ;
+    Fish = noun "ryba" "ryby" Fem ;
+    Pizza = noun "pizza" "pizzy" Fem ;
+    Very qual = {s = \\g,n => "velmi" ++ qual.s ! g ! n} ;
+    Fresh = regAdj "čerstv" ;
+    Warm = regAdj "tepl" ;
+    Italian = regAdj "italsk" ;
+    Expensive = regAdj "drah" ;
+    Delicious = regnfAdj "vynikající" ;
+    Boring = regAdj "nudn" ;
+}
+
diff --git a/samples/Grammatical Framework/FoodsDut.gf b/samples/Grammatical Framework/FoodsDut.gf
new file mode 100644
index 00000000..d4855e5c
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsDut.gf	
@@ -0,0 +1,58 @@
+-- (c) 2009 Femke Johansson under LGPL
+
+concrete FoodsDut of Foods = {
+
+	lincat
+		Comment = {s : Str};
+		Quality = {s : AForm => Str};
+		Kind = { s : Number => Str};
+		Item = {s : Str ; n : Number};
+	
+	lin
+		Pred item quality = 
+			{s = item.s ++ copula ! item.n ++ quality.s ! APred};
+		This = det Sg "deze";
+		These = det Pl "deze";
+		That = det Sg "die";
+		Those = det Pl "die";
+		
+		Mod quality kind =
+			{s = \\n => quality.s ! AAttr ++ kind.s ! n};
+			Wine = regNoun "wijn";
+			Cheese = noun "kaas" "kazen";
+			Fish = noun "vis" "vissen";
+			Pizza = noun "pizza" "pizza's";
+			
+			Very a = {s = \\f => "erg" ++ a.s ! f};
+			
+			Fresh = regadj "vers";
+			Warm = regadj "warm";
+			Italian = regadj "Italiaans";
+			Expensive = adj "duur" "dure";
+			Delicious = regadj "lekker";
+			Boring = regadj "saai";
+		
+		param
+			Number = Sg | Pl;
+			AForm = APred | AAttr;
+		
+		oper
+			det : Number -> Str ->
+				{s : Number => Str} -> {s : Str ; n: Number} =
+				\n,det,noun -> {s = det ++ noun.s ! n ; n=n};
+				
+			noun : Str -> Str -> {s : Number => Str} = 
+				\man,men -> {s = table {Sg => man; Pl => men}};
+				
+			regNoun : Str -> {s : Number => Str} =
+				\wijn -> noun wijn (wijn + "en");
+				
+			regadj : Str -> {s : AForm => Str} =
+				\koud -> adj koud (koud+"e");
+			
+			adj : Str -> Str -> {s : AForm => Str} =
+				\duur, dure -> {s = table {APred => duur; AAttr => dure}};
+				
+			copula : Number => Str =
+				table {Sg => "is" ; Pl => "zijn"};
+}
diff --git a/samples/Grammatical Framework/FoodsEng.gf b/samples/Grammatical Framework/FoodsEng.gf
new file mode 100644
index 00000000..e7359a4f
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsEng.gf	
@@ -0,0 +1,43 @@
+-- (c) 2009 Aarne Ranta under LGPL
+
+concrete FoodsEng of Foods = {
+  flags language = en_US;
+  lincat
+    Comment, Quality = {s : Str} ; 
+    Kind = {s : Number => Str} ; 
+    Item = {s : Str ; n : Number} ; 
+  lin
+    Pred item quality = 
+      {s = item.s ++ copula ! item.n ++ quality.s} ;
+    This  = det Sg "this" ;
+    That  = det Sg "that" ;
+    These = det Pl "these" ;
+    Those = det Pl "those" ;
+    Mod quality kind = 
+      {s = \\n => quality.s ++ kind.s ! n} ;
+    Wine = regNoun "wine" ;
+    Cheese = regNoun "cheese" ;
+    Fish = noun "fish" "fish" ;
+    Pizza = regNoun "pizza" ;
+    Very a = {s = "very" ++ a.s} ;
+    Fresh = adj "fresh" ;
+    Warm = adj "warm" ;
+    Italian = adj "Italian" ;
+    Expensive = adj "expensive" ;
+    Delicious = adj "delicious" ;
+    Boring = adj "boring" ;
+  param
+    Number = Sg | Pl ;
+  oper
+    det : Number -> Str -> 
+      {s : Number => Str} -> {s : Str ; n : Number} = 
+        \n,det,noun -> {s = det ++ noun.s ! n ; n = n} ;
+    noun : Str -> Str -> {s : Number => Str} = 
+      \man,men -> {s = table {Sg => man ; Pl => men}} ;
+    regNoun : Str -> {s : Number => Str} = 
+      \car -> noun car (car + "s") ;
+    adj : Str -> {s : Str} = 
+      \cold -> {s = cold} ;
+    copula : Number => Str = 
+      table {Sg => "is" ; Pl => "are"} ;
+}
diff --git a/samples/Grammatical Framework/FoodsEpo.gf b/samples/Grammatical Framework/FoodsEpo.gf
new file mode 100644
index 00000000..dd2400fe
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsEpo.gf	
@@ -0,0 +1,48 @@
+-- (c) 2009 Julia Hammar under LGPL
+
+concrete FoodsEpo of Foods = open Prelude in {
+
+  flags coding =utf8 ;
+
+  lincat
+    Comment = SS ; 
+    Kind, Quality = {s : Number => Str} ; 
+    Item = {s : Str ; n : Number} ; 
+
+  lin
+    Pred item quality = ss (item.s ++ copula ! item.n ++ quality.s ! item.n) ;
+    This = det Sg "ĉi tiu" ;
+    That  = det Sg "tiu" ;
+    These = det Pl "ĉi tiuj" ;
+    Those = det Pl "tiuj" ;
+    Mod quality kind = {s = \\n => quality.s ! n ++ kind.s ! n} ;
+    Wine = regNoun "vino" ;
+    Cheese = regNoun "fromaĝo" ;
+    Fish = regNoun "fiŝo" ;
+    Pizza = regNoun "pico" ;
+    Very quality = {s = \\n => "tre" ++ quality.s ! n} ;
+    Fresh = regAdj "freŝa" ;
+    Warm = regAdj "varma" ;
+    Italian = regAdj "itala" ;
+    Expensive = regAdj "altekosta" ;
+    Delicious = regAdj "bongusta" ;
+    Boring = regAdj "enuiga" ;
+
+  param
+    Number = Sg | Pl ;
+
+  oper
+    det : Number -> Str -> {s : Number => Str} -> {s : Str ; n : Number} = 
+      \n,d,cn -> {
+        s = d ++ cn.s ! n ;
+        n = n
+      } ;
+    regNoun : Str -> {s : Number => Str} = 
+      \vino -> {s = table {Sg => vino ; Pl => vino + "j"}
+	} ;
+    regAdj : Str -> {s : Number => Str} =
+      \nova -> {s = table {Sg => nova ; Pl => nova + "j"}
+      } ;
+    copula : Number => Str = \\_ => "estas" ;
+}
+    
diff --git a/samples/Grammatical Framework/FoodsFin.gf b/samples/Grammatical Framework/FoodsFin.gf
new file mode 100644
index 00000000..34da5764
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsFin.gf	
@@ -0,0 +1,7 @@
+--# -path=.:present
+
+-- (c) 2009 Aarne Ranta under LGPL
+
+concrete FoodsFin of Foods = FoodsI with 
+  (Syntax = SyntaxFin),
+  (LexFoods = LexFoodsFin) ;
diff --git a/samples/Grammatical Framework/FoodsFre.gf b/samples/Grammatical Framework/FoodsFre.gf
new file mode 100644
index 00000000..ac6c8c63
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsFre.gf	
@@ -0,0 +1,32 @@
+--# -path=.:../foods:present
+
+concrete FoodsFre of Foods = open SyntaxFre, ParadigmsFre in {
+
+	flags coding = utf8 ;
+	
+	lincat
+		Comment = Utt ;
+		Item = NP ;
+		Kind = CN ;
+		Quality = AP ;
+	
+	lin
+		Pred item quality = mkUtt (mkCl item quality) ;
+		This kind = mkNP this_QuantSg kind ;
+		That kind = mkNP that_QuantSg kind ;
+		These kind = mkNP these_QuantPl kind ;
+		Those kind = mkNP those_QuantPl kind ;
+		Mod quality kind = mkCN quality kind ;
+		Very quality = mkAP very_AdA quality ;
+		
+		Wine = mkCN (mkN "vin" masculine) ;
+		Pizza = mkCN (mkN "pizza" feminine) ;
+		Cheese = mkCN (mkN "fromage" masculine) ;
+		Fish = mkCN (mkN "poisson" masculine) ;
+		Fresh = mkAP (mkA "frais" "fraîche" "frais" "fraîchement") ;
+		Warm = mkAP (mkA "chaud") ;
+		Italian = mkAP (mkA "italien") ;
+		Expensive = mkAP (mkA "cher") ;
+		Delicious = mkAP (mkA "délicieux") ;
+		Boring = mkAP (mkA "ennuyeux") ;
+	}
\ No newline at end of file
diff --git a/samples/Grammatical Framework/FoodsGer.gf b/samples/Grammatical Framework/FoodsGer.gf
new file mode 100644
index 00000000..934cefb9
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsGer.gf	
@@ -0,0 +1,7 @@
+--# -path=.:present
+
+-- (c) 2009 Aarne Ranta under LGPL
+
+concrete FoodsGer of Foods = FoodsI with 
+  (Syntax = SyntaxGer),
+  (LexFoods = LexFoodsGer) ;
diff --git a/samples/Grammatical Framework/FoodsHeb.gf b/samples/Grammatical Framework/FoodsHeb.gf
new file mode 100644
index 00000000..3d76b639
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsHeb.gf	
@@ -0,0 +1,108 @@
+--# -path=alltenses
+
+--(c) 2009 Dana Dannells
+-- Licensed under LGPL
+
+concrete FoodsHeb of Foods = open Prelude in {
+  
+  flags coding=utf8 ;
+
+    lincat
+      Comment = SS ;
+      Quality = {s: Number => Species => Gender =>  Str} ;  
+      Kind = {s : Number => Species => Str ; g : Gender ; mod : Modified} ; 
+      Item = {s : Str ; g : Gender ; n : Number ; sp : Species ; mod : Modified} ; 
+  
+ 
+    lin
+      Pred item quality = ss (item.s ++ quality.s ! item.n ! Indef ! item.g ) ; 
+      This  = det Sg Def "הזה" "הזאת"; 
+      That  = det Sg Def "ההוא" "ההיא" ; 
+      These = det Pl Def "האלה" "האלה" ; 
+      Those = det Pl Def "ההם" "ההן" ; 
+      Mod quality kind = {
+	s = \\n,sp => kind.s ! n ! sp ++ quality.s ! n ! sp ! kind.g;
+	g = kind.g ;
+	mod = T
+	} ;     
+      Wine = regNoun "יין" "יינות" Masc ; 
+      Cheese = regNoun "גבינה" "גבינות" Fem ;  
+      Fish = regNoun "דג" "דגים" Masc ; 
+      Pizza = regNoun "פיצה" "פיצות" Fem ; 
+      Very qual = {s = \\g,n,sp => "מאוד" ++  qual.s ! g ! n ! sp} ;
+      Fresh = regAdj "טרי" ; 
+      Warm = regAdj "חם" ;
+      Italian = regAdj2 "איטלקי" ;
+      Expensive = regAdj "יקר" ; 
+      Delicious = regAdj "טעים" ; 
+      Boring = regAdj2 "משעמם"; 
+
+    param 
+      Number = Sg | Pl ;
+      Gender = Masc | Fem ;
+      Species = Def | Indef ;  
+      Modified = T | F ;
+
+    oper
+	Noun : Type = {s : Number => Species => Str ; g : Gender ; mod : Modified } ;
+  	Adj : Type = {s : Number => Species => Gender => Str} ;
+
+      det : Number -> Species -> Str -> Str -> Noun -> 
+	{s : Str ; g :Gender ; n : Number ; sp : Species ; mod : Modified} = 
+        \n,sp,m,f,cn -> {
+	  s = case cn.mod of { _ => cn.s ! n ! sp ++ case cn.g of {Masc => m ; Fem  => f} };
+	  g = cn.g ; 
+          n = n ;
+	  sp = sp ;
+	  mod = cn.mod
+        } ;
+      
+	noun : (gvina,hagvina,gvinot,hagvinot : Str) ->  Gender -> Noun =  
+      		\gvina,hagvina,gvinot,hagvinot,g -> {
+        	s = table {
+          		Sg  => table {
+             			Indef => gvina ;
+             			Def =>  hagvina 
+            		} ;
+          		Pl => table {
+             			Indef => gvinot ;
+             			Def => hagvinot  
+            		} 
+       	  	} ;
+        	g = g ;
+		mod = F 
+      } ;
+
+	regNoun : Str -> Str -> Gender -> Noun = 
+	        \gvina,gvinot, g -> 
+		noun gvina (defH gvina) gvinot (defH gvinot) g ; 
+
+      defH : Str -> Str = \cn ->
+	case cn of {_ => "ה" + cn};	
+
+      replaceLastLetter : Str -> Str = \c ->
+	 case c of {"ף" => "פ" ; "ם" => "מ" ; "ן" => "נ" ; "ץ" => "צ" ; "ך" => "כ"; _ => c} ;
+	      
+      adjective : (_,_,_,_ : Str) -> Adj = 
+       \tov,tova,tovim,tovot -> {
+        s = table {
+          Sg => table { 
+			Indef => table { Masc => tov ; Fem => tova } ; 
+			Def => table { Masc => defH tov ; Fem => defH tova }  
+            		} ; 
+          Pl => table { 
+			Indef => table {Masc => tovim ; Fem  => tovot } ; 
+			Def => table { Masc => defH tovim ; Fem  => defH tovot }  
+            		}
+	}
+      } ;
+    
+      regAdj : Str -> Adj = \tov ->
+	case tov of { to + c@? =>
+	adjective tov (to + replaceLastLetter (c) + "ה" ) (to + replaceLastLetter (c) +"ים" ) (to + replaceLastLetter (c) + "ות" )};	 
+     
+     regAdj2 : Str -> Adj = \italki ->
+ 	case italki of { italk+ c@? => 
+    adjective italki (italk + replaceLastLetter (c)  +"ת" )  (italk + replaceLastLetter (c)+ "ים" ) (italk + replaceLastLetter (c)  + "ות" )};
+
+}  -- FoodsHeb  
diff --git a/samples/Grammatical Framework/FoodsHin.gf b/samples/Grammatical Framework/FoodsHin.gf
new file mode 100644
index 00000000..67c29df8
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsHin.gf	
@@ -0,0 +1,75 @@
+-- (c) 2010 Vikash Rauniyar under LGPL
+
+concrete FoodsHin of Foods = {
+
+  flags coding=utf8 ;
+
+  param
+    Gender = Masc | Fem ;
+    Number = Sg | Pl ;
+  lincat
+    Comment = {s : Str} ;
+    Item    = {s : Str ; g : Gender ; n : Number} ;
+    Kind    = {s : Number => Str ; g : Gender} ;
+    Quality = {s : Gender => Number => Str} ;
+  lin
+    Pred item quality = {
+      s = item.s ++ quality.s ! item.g ! item.n ++ copula item.n
+      } ;
+    This kind = {s = "यह" ++ kind.s ! Sg ; g = kind.g ; n = Sg} ;
+    That kind = {s = "वह" ++ kind.s ! Sg ; g = kind.g ; n = Sg} ;
+    These kind = {s = "ये" ++ kind.s ! Pl ; g = kind.g ; n = Pl} ;
+    Those kind = {s = "वे" ++ kind.s ! Pl ; g = kind.g ; n = Pl} ;
+    Mod quality kind = {
+      s = \\n => quality.s ! kind.g ! n ++ kind.s ! n ; 
+      g = kind.g
+      } ;
+    Wine = regN "मदिरा" ;
+    Cheese = regN "पनीर" ;
+    Fish = regN "मछली" ;
+    Pizza = regN "पिज़्ज़ा" ;
+    Very quality = {s = \\g,n => "अति" ++ quality.s ! g ! n} ;
+    Fresh = regAdj "ताज़ा" ;
+    Warm = regAdj "गरम" ;
+    Italian = regAdj "इटली" ; 
+    Expensive = regAdj "बहुमूल्य" ;
+    Delicious = regAdj "स्वादिष्ट" ;
+    Boring = regAdj "अरुचिकर" ;
+
+  oper
+    mkN : Str -> Str -> Gender -> {s : Number => Str ; g : Gender} = 
+      \s,p,g -> {
+        s = table {
+          Sg => s ;
+          Pl => p
+          } ;
+        g = g
+      } ;
+
+    regN : Str -> {s : Number => Str ; g : Gender} = \s -> case s of {
+      lark + "ा" => mkN s (lark + "े") Masc ;
+      lark + "ी" => mkN s (lark + "ीयँा") Fem ;
+      _           => mkN s s Masc 
+      } ;
+
+    mkAdj : Str -> Str -> Str -> {s : Gender => Number => Str} = \ms,mp,f -> {
+      s = table {
+        Masc => table {
+          Sg => ms ;
+          Pl => mp
+          } ;
+        Fem  => \\_ => f
+        }
+      } ;
+
+    regAdj : Str -> {s : Gender => Number => Str} = \a -> case a of {
+      acch + "ा" => mkAdj a (acch + "े") (acch + "ी") ;
+      _          => mkAdj a a a
+      } ;
+
+    copula : Number -> Str = \n -> case n of {
+      Sg => "है" ;
+      Pl => "हैं"
+      } ;
+
+  }
diff --git a/samples/Grammatical Framework/FoodsI.gf b/samples/Grammatical Framework/FoodsI.gf
new file mode 100644
index 00000000..f4113b72
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsI.gf	
@@ -0,0 +1,29 @@
+-- (c) 2009 Aarne Ranta under LGPL
+
+incomplete concrete FoodsI of Foods = 
+    open Syntax, LexFoods in {
+  lincat
+    Comment = Utt ; 
+    Item = NP ;
+    Kind = CN ;
+    Quality = AP ;
+  lin
+    Pred item quality = mkUtt (mkCl item quality) ;
+    This kind = mkNP this_Det kind ;
+    That kind = mkNP that_Det kind ;
+    These kind = mkNP these_Det kind ;
+    Those kind = mkNP those_Det kind ;
+    Mod quality kind = mkCN quality kind ;
+    Very quality = mkAP very_AdA quality ;
+
+    Wine = mkCN wine_N ;
+    Pizza = mkCN pizza_N ;
+    Cheese = mkCN cheese_N ;
+    Fish = mkCN fish_N ;
+    Fresh = mkAP fresh_A ;
+    Warm = mkAP warm_A ;
+    Italian = mkAP italian_A ;
+    Expensive = mkAP expensive_A ;
+    Delicious = mkAP delicious_A ;
+    Boring = mkAP boring_A ;
+}
diff --git a/samples/Grammatical Framework/FoodsIce.gf b/samples/Grammatical Framework/FoodsIce.gf
new file mode 100644
index 00000000..ab1297c7
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsIce.gf	
@@ -0,0 +1,84 @@
+--# -path=.:prelude
+
+-- (c) 2009 Martha Dis Brandt under LGPL
+
+concrete FoodsIce of Foods = open Prelude in {
+
+  flags coding=utf8;
+
+  lincat
+    Comment = SS ;
+    Quality = {s : Gender => Number => Defin => Str} ;
+    Kind = {s : Number => Str ; g : Gender} ;
+    Item = {s : Str ; g : Gender ; n : Number} ;
+
+  lin
+    Pred item quality =  ss (item.s ++ copula item.n ++ quality.s ! item.g ! item.n ! Ind) ;
+         This, That  = det Sg "þessi"   "þessi"  "þetta" ;
+         These, Those = det Pl "þessir" "þessar" "þessi" ;
+    Mod quality kind = { s = \\n => quality.s ! kind.g ! n ! Def ++ kind.s ! n ; g = kind.g } ;
+         Wine = noun "vín" "vín" Neutr ;
+         Cheese = noun "ostur" "ostar" Masc ;
+         Fish = noun "fiskur" "fiskar" Masc ;
+         -- the word "pizza" is more commonly used in Iceland, but "flatbaka" is the Icelandic word for it
+         Pizza = noun "flatbaka" "flatbökur" Fem ;
+    Very qual = {s = \\g,n,defOrInd => "mjög" ++ qual.s ! g ! n ! defOrInd } ;
+         Fresh = regAdj "ferskur" ;
+         Warm = regAdj "heitur" ;
+         Boring = regAdj "leiðinlegur" ;
+         -- the order of the given adj forms is: mSg fSg nSg mPl fPl nPl mSgDef f/nSgDef _PlDef
+         Italian = adjective "ítalskur" "ítölsk" "ítalskt" "ítalskir" "ítalskar" "ítölsk" "ítalski" "ítalska" "ítalsku" ;
+         Expensive = adjective "dýr" "dýr" "dýrt" "dýrir" "dýrar" "dýr" "dýri" "dýra" "dýru" ;
+         Delicious = adjective "ljúffengur" "ljúffeng" "ljúffengt" "ljúffengir" "ljúffengar" "ljúffeng" "ljúffengi" "ljúffenga" "ljúffengu" ;
+
+  param
+    Number = Sg | Pl ;
+    Gender = Masc | Fem | Neutr ;
+    Defin = Ind | Def ;
+
+  oper
+    det : Number -> Str -> Str -> Str -> {s : Number => Str ; g : Gender} ->
+        {s : Str ; g : Gender ; n : Number} =
+      \n,masc,fem,neutr,cn -> {
+        s = case cn.g of {Masc => masc ; Fem => fem; Neutr => neutr } ++ cn.s ! n ;
+        g = cn.g ;
+        n = n
+      } ;
+
+    noun : Str -> Str -> Gender -> {s : Number => Str ; g : Gender} =
+      \man,men,g -> {
+        s = table {
+          Sg => man ;
+          Pl => men
+          } ;
+        g = g
+      } ;
+
+    adjective : (x1,_,_,_,_,_,_,_,x9 : Str) -> {s : Gender => Number => Defin => Str} =
+      \ferskur,fersk,ferskt,ferskir,ferskar,fersk_pl,ferski,ferska,fersku -> {
+         s = \\g,n,t => case <g,n,t> of {
+            < Masc, Sg, Ind > => ferskur ;
+            < Masc, Pl, Ind > => ferskir ;
+            < Fem, Sg, Ind > => fersk ;
+            < Fem, Pl, Ind > => ferskar ;
+            < Neutr, Sg, Ind > => ferskt ;
+            < Neutr, Pl, Ind > => fersk_pl;
+            < Masc, Sg, Def > => ferski ;
+            < Fem, Sg, Def > | < Neutr, Sg, Def > => ferska ;
+            < _ , Pl, Def > => fersku
+            }
+          } ;
+
+    regAdj : Str -> {s : Gender => Number => Defin => Str} = \ferskur ->
+      let fersk = Predef.tk 2 ferskur
+      in adjective
+        ferskur fersk (fersk + "t")
+        (fersk + "ir") (fersk + "ar") fersk
+        (fersk + "i") (fersk + "a") (fersk + "u") ;
+
+    copula : Number -> Str =
+      \n -> case n of {
+        Sg => "er" ;
+        Pl => "eru"
+        } ;
+}
diff --git a/samples/Grammatical Framework/FoodsIta.gf b/samples/Grammatical Framework/FoodsIta.gf
new file mode 100644
index 00000000..51baf9d7
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsIta.gf	
@@ -0,0 +1,8 @@
+--# -path=.:present
+
+-- (c) 2009 Aarne Ranta under LGPL
+
+concrete FoodsIta of Foods = FoodsI with 
+  (Syntax = SyntaxIta),
+  (LexFoods = LexFoodsIta) ;
+
diff --git a/samples/Grammatical Framework/FoodsJpn.gf b/samples/Grammatical Framework/FoodsJpn.gf
new file mode 100644
index 00000000..9525ff16
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsJpn.gf	
@@ -0,0 +1,72 @@
+--# -path=.:../lib/src/prelude
+
+-- (c) 2009 Zofia Stankiewicz under LGPL
+
+concrete FoodsJpn of Foods = open Prelude in {
+
+flags coding=utf8 ;
+
+  lincat
+    Comment = {s: Style => Str};
+    Quality = {s: AdjUse => Str ; t: AdjType} ;
+    Kind = {s : Number => Str} ; 
+    Item = {s : Str ; n : Number} ; 
+
+  lin
+    Pred item quality = {s = case quality.t of {
+      IAdj => table {Plain => item.s ++ quality.s ! APred ; Polite => item.s ++ quality.s ! APred ++ copula ! Polite ! item.n } ;
+      NaAdj => \\p => item.s ++ quality.s ! APred ++ copula ! p ! item.n } 
+      } ;
+    This  = det Sg "この" ;
+    That  = det Sg "その" ;
+    These = det Pl "この" ;
+    Those = det Pl "その" ;
+    Mod quality kind = {s = \\n => quality.s ! Attr ++ kind.s ! n} ;
+    Wine = regNoun "ワインは" ;
+    Cheese = regNoun "チーズは" ;
+    Fish = regNoun "魚は" ;
+    Pizza = regNoun "ピザは" ;
+    Very quality =  {s = \\a => "とても" ++ quality.s ! a ; t = quality.t } ;
+    Fresh = adj "新鮮な" "新鮮";
+    Warm = regAdj "あたたかい" ;
+    Italian = adj "イタリアの" "イタリアのもの";
+    Expensive = regAdj "たかい" ;
+    Delicious = regAdj "おいしい" ;
+    Boring = regAdj "つまらない" ;
+
+  param
+    Number = Sg | Pl ;
+    AdjUse = Attr | APred ;        -- na-adjectives have different forms as noun attributes and predicates
+    Style = Plain | Polite ;      -- for phrase types
+    AdjType = IAdj | NaAdj ;      -- IAdj can form predicates without the copula, NaAdj cannot
+
+  oper
+    det : Number -> Str -> {s : Number => Str} -> {s : Str ; n : Number} = 
+      \n,d,cn -> {
+        s = d ++ cn.s ! n ;
+        n = n
+      } ;
+   noun : Str -> Str -> {s : Number => Str} = 
+      \sakana,sakana -> {s = \\_ => sakana } ;
+
+   regNoun : Str -> {s : Number => Str} = 
+      \sakana -> noun sakana sakana ;
+
+   adj : Str -> Str -> {s : AdjUse => Str ; t : AdjType} =
+      \chosenna, chosen -> {
+       s = table { 
+         Attr => chosenna ;
+         APred => chosen
+       } ;
+       t = NaAdj 
+      } ;
+   
+   regAdj : Str -> {s: AdjUse => Str ; t : AdjType} =\akai -> {
+     s = \\_ => akai ; t = IAdj} ;
+
+    copula : Style => Number => Str = 
+      table { 
+        Plain => \\_ => "だ" ;
+        Polite => \\_ => "です" } ;
+
+}   
diff --git a/samples/Grammatical Framework/FoodsLav.gf b/samples/Grammatical Framework/FoodsLav.gf
new file mode 100644
index 00000000..efab6345
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsLav.gf	
@@ -0,0 +1,91 @@
+--# -path=.:prelude
+
+-- (c) 2009 Inese Bernsone under LGPL
+
+concrete FoodsLav of Foods = open Prelude in {
+
+  flags
+    coding=utf8 ;
+    
+  lincat
+    Comment = SS ; 
+    Quality = {s : Q => Gender => Number => Defin => Str } ; 
+    Kind = {s : Number => Str ; g : Gender} ; 
+    Item = {s : Str ; g : Gender ; n : Number } ; 
+
+  lin
+    Pred item quality = ss (item.s ++ {- copula item.n -} "ir" ++ quality.s ! Q1 ! item.g ! item.n ! Ind ) ;
+      This  = det Sg "šis" "šī" ;
+      That  = det Sg "tas" "tā" ;
+      These = det Pl "šie" "šīs" ;
+      Those = det Pl "tie" "tās" ;
+    Mod quality kind = {s = \\n => quality.s ! Q1 ! kind.g ! n ! Def ++ kind.s ! n ; g = kind.g } ;
+      Wine = noun "vīns" "vīni" Masc ;
+      Cheese = noun "siers" "sieri" Masc ;
+      Fish = noun "zivs" "zivis" Fem ;
+      Pizza = noun "pica" "picas" Fem ;
+    Very qual = {s = \\q,g,n,spec => "ļoti" ++ qual.s ! Q2 ! g ! n ! spec }; 
+ 
+      Fresh = adjective "svaigs" "svaiga" "svaigi" "svaigas" "svaigais" "svaigā" "svaigie" "svaigās" ;
+      Warm = regAdj "silts" ;
+      Italian = specAdj "itāļu" (regAdj "itālisks") ;
+      Expensive = regAdj "dārgs" ;
+      Delicious = regAdj "garšīgs" ;
+      Boring = regAdj "garlaicīgs" ;
+
+  param
+    Number = Sg | Pl ;
+    Gender = Masc | Fem ;
+    Defin = Ind | Def ;
+    Q = Q1 | Q2 ;
+
+  oper
+   det : Number -> Str -> Str -> {s : Number => Str ; g : Gender} -> 
+        {s : Str ; g : Gender ; n : Number} = 
+      \n,m,f,cn -> {
+        s = case cn.g of {Masc => m ; Fem => f} ++ cn.s ! n ;
+        g = cn.g ;
+        n = n
+      } ;
+    noun : Str -> Str -> Gender -> {s : Number => Str ; g : Gender} = 
+      \man,men,g -> {
+        s = table {
+          Sg => man ;
+          Pl => men 
+          } ;
+        g = g
+      } ;
+    adjective : (_,_,_,_,_,_,_,_ : Str) -> {s : Q => Gender => Number => Defin => Str} = 
+      \skaists,skaista,skaisti,skaistas,skaistais,skaistaa,skaistie,skaistaas -> {
+        s = table {
+		  _ => table {
+            Masc => table {
+              Sg => table {Ind => skaists ; Def => skaistais} ;
+              Pl => table {Ind => skaisti ; Def => skaistie}
+              } ; 
+            Fem => table {
+              Sg => table {Ind => skaista ; Def => skaistaa} ;
+              Pl => table {Ind => skaistas ; Def => skaistaas} 
+              }
+            } 
+		  }
+        } ;
+      
+ {-   irregAdj : Str -> {s : Gender => Number => Defin => Str} = \itaalju ->
+     let itaalju = itaalju
+     in adjective itaalju (itaalju) (itaalju) (itaalju) (itaalju) (itaalju) (itaalju) (itaalju) ; -}
+     
+    regAdj : Str -> {s : Q => Gender => Number => Defin => Str} = \skaists ->
+      let skaist = init skaists 
+      in adjective skaists (skaist + "a") (skaist + "i") (skaist + "as") (skaist + "ais") (skaist + "ā") (skaist + "ie") (skaist + "ās");
+
+    Adjective : Type = {s : Q => Gender => Number => Defin => Str} ;
+
+	specAdj : Str -> Adjective -> Adjective = \s,a -> {
+      s = table {
+        Q2 => a.s ! Q1 ;
+        Q1 => \\_,_,_ => s
+        }		
+	  } ;
+	
+	}
diff --git a/samples/Grammatical Framework/FoodsMlt.gf b/samples/Grammatical Framework/FoodsMlt.gf
new file mode 100644
index 00000000..5fcd4de7
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsMlt.gf	
@@ -0,0 +1,105 @@
+-- (c) 2013 John J. Camilleri under LGPL
+
+concrete FoodsMlt of Foods = open Prelude in {
+  flags coding=utf8 ;
+
+  lincat
+    Comment = SS ;
+    Quality = {s : Gender => Number => Str} ;
+    Kind = {s : Number => Str ; g : Gender} ;
+    Item = {s : Str ; g : Gender ; n : Number} ;
+
+  lin
+    -- Pred item quality = ss (item.s ++ copula item.n item.g ++ quality.s ! item.g ! item.n) ;
+    Pred item quality = ss (item.s ++ quality.s ! item.g ! item.n) ;
+
+    This kind = det Sg "dan" "din" kind ;
+    That kind = det Sg "dak" "dik" kind ;
+    These kind = det Pl "dawn" "" kind ;
+    Those kind = det Pl "dawk" "" kind ;
+
+    Mod quality kind = {
+      s = \\n => kind.s ! n ++ quality.s ! kind.g ! n ;
+      g = kind.g
+      } ;
+
+    Wine = noun "inbid" "inbejjed" Masc ;
+    Cheese = noun "ġobon" "ġobniet" Masc ;
+    Fish = noun "ħuta" "ħut" Fem ;
+    Pizza = noun "pizza" "pizzez" Fem ;
+
+    Very qual = {s = \\g,n => qual.s ! g ! n ++ "ħafna"} ;
+
+    Warm = adjective "sħun" "sħuna" "sħan" ;
+    Expensive = adjective "għali" "għalja" "għaljin" ;
+    Delicious = adjective "tajjeb" "tajba" "tajbin" ;
+    Boring = uniAdj "tad-dwejjaq" ;
+    Fresh = regAdj "frisk" ;
+    Italian = regAdj "Taljan" ;
+
+  param
+    Number = Sg | Pl ;
+    Gender = Masc | Fem ;
+
+  oper
+    --Create an adjective (full function)
+    --Params: Sing Masc, Sing Fem, Plural
+    adjective : (_,_,_ : Str) -> {s : Gender => Number => Str} = \iswed,sewda,suwed -> {
+      s = table {
+	Masc => table {
+	  Sg => iswed ;
+	  Pl => suwed
+	  } ;
+	Fem => table {
+	  Sg => sewda ;
+	  Pl => suwed
+	  }
+	}
+      } ;
+
+    --Create a regular adjective
+    --Param: Sing Masc
+    regAdj : Str -> {s : Gender => Number => Str} = \frisk ->
+      adjective frisk (frisk + "a") (frisk + "i") ;
+
+    --Create a "uni-adjective" eg tal-buzz
+    --Param: Sing Masc
+    uniAdj : Str -> {s : Gender => Number => Str} = \uni ->
+      adjective uni uni uni ;
+
+    --Create a noun
+    --Params: Singular, Plural, Gender (inherent)
+    noun : Str -> Str -> Gender -> {s : Number => Str ; g : Gender} = \ktieb,kotba,g -> {
+      s = table {
+	Sg => ktieb ;
+	Pl => kotba
+	} ;
+      g = g
+      } ;
+
+    --Copula is a linking verb
+    --Params: Number, Gender
+    -- copula : Number -> Gender -> Str = \n,g -> case n of {
+    --   Sg => case g of { Masc => "huwa" ; Fem => "hija" } ;
+    --   Pl => "huma"
+    --   } ;
+
+    --Create an article, taking into account first letter of next word
+    article = pre {
+      "a"|"e"|"i"|"o"|"u" => "l-" ;
+      --cons@("ċ"|"d"|"n"|"r"|"s"|"t"|"x"|"ż") => "i" + cons + "-" ;
+      _ => "il-"
+      } ;
+
+    --Create a determinant
+    --Params: Sg/Pl, Masc, Fem
+    det : Number -> Str -> Str -> {s : Number => Str ; g : Gender} -> {s : Str ; g : Gender ; n : Number} = \n,m,f,cn -> {
+      s = case n of {
+	Sg => case cn.g of {Masc => m ; Fem => f}; --string
+	Pl => m --default to masc
+	} ++ article ++ cn.s ! n ;
+      g = cn.g ; --gender
+      n = n --number
+      } ;
+
+}
diff --git a/samples/Grammatical Framework/FoodsMon.gf b/samples/Grammatical Framework/FoodsMon.gf
new file mode 100644
index 00000000..eda2012f
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsMon.gf	
@@ -0,0 +1,49 @@
+--# -path=.:/GF/lib/src/prelude
+
+-- (c) 2009 Nyamsuren Erdenebadrakh under LGPL
+
+concrete FoodsMon of Foods = open Prelude in {
+  flags coding=utf8;
+
+  lincat
+    Comment, Quality = SS ; 
+	Kind = {s : Number => Str} ; 
+    Item = {s : Str ; n : Number} ; 
+
+  lin
+	Pred item quality = ss (item.s ++ "бол" ++ quality.s) ;
+	This  = det Sg "энэ" ;
+	That  = det Sg "тэр" ;
+	These = det Pl "эдгээр" ;
+	Those = det Pl "тэдгээр" ;
+	Mod quality kind = {s = \\n => quality.s ++ kind.s ! n} ;
+	Wine = regNoun "дарс" ;
+	Cheese = regNoun "бяслаг" ;
+	Fish = regNoun "загас" ;
+	Pizza = regNoun "пицца" ;
+	Very = prefixSS "маш" ;
+	Fresh = ss "шинэ" ;
+	Warm = ss "халуун" ;
+	Italian = ss "итали" ;
+	Expensive = ss "үнэтэй" ;
+	Delicious = ss "амттай" ;
+	Boring = ss "амтгүй" ;
+
+  param
+    Number = Sg | Pl ;
+
+  oper
+	det : Number -> Str -> {s : Number => Str} -> {s : Str ; n : Number} = 
+	\n,d,cn -> {
+		s = d ++ cn.s ! n ;
+		n = n
+	} ;
+  	
+	regNoun : Str -> {s : Number => Str} = 
+	\x -> {s = table {
+		Sg => x ; 
+		Pl => x + "нууд"}
+		} ;
+	}
+	 
+    
diff --git a/samples/Grammatical Framework/FoodsNep.gf b/samples/Grammatical Framework/FoodsNep.gf
new file mode 100644
index 00000000..ea02e64a
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsNep.gf	
@@ -0,0 +1,60 @@
+-- (c) 2011 Dinesh Simkhada under LGPL
+
+concrete FoodsNep of Foods = {
+
+  flags coding = utf8 ;
+
+  lincat
+    Comment, Quality = {s : Str} ; 
+    Kind = {s : Number => Str} ; 
+    Item = {s : Str ; n : Number} ; 
+    
+  lin
+    Pred item quality = 
+      {s = item.s ++ quality.s ++ copula ! item.n} ;
+      
+    This  = det Sg "यो" ;
+    That  = det Sg "त्यो" ;
+    These = det Pl "यी" ;
+    Those = det Pl "ती" ;
+    Mod quality kind = 
+      {s = \\n => quality.s ++ kind.s ! n} ;
+      
+    Wine = regNoun "रक्सी" ;
+    Cheese = regNoun "चिज" ;
+    Fish = regNoun "माछा" ;
+    Pizza = regNoun "पिज्जा" ;
+    Very a = {s = "धेरै" ++ a.s} ;
+    Fresh = adj "ताजा" ;
+    Warm = adj "तातो" ;
+    Italian = adj "इटालियन" ;
+    Expensive = adj "महँगो" | adj "बहुमूल्य" ;
+    Delicious = adj "स्वादिष्ट" | adj "मीठो" ;
+    Boring = adjPl "नमिठो" ;
+  
+  param
+    Number = Sg | Pl ;
+    
+  oper
+    det : Number -> Str -> 
+      {s : Number => Str} -> {s : Str ; n : Number} = 
+        \n,det,noun -> {s = det ++ noun.s ! n ; n = n} ;
+    
+    noun : Str -> Str -> {s : Number => Str} = 
+      \man,men -> {s = table {Sg => man ; Pl => men}} ;
+    
+    regNoun : Str -> {s : Number => Str} = 
+      \car -> noun car (car + "हरु") ;
+    
+    adjPl : Str -> {s : Str} = \a -> case a of {
+      bor + "ठो" => adj (bor + "ठा") ;
+      _ => adj a
+      } ;
+      
+    adj : Str -> {s : Str} = 
+      \cold -> {s = cold} ;
+    
+    copula : Number => Str = 
+      table {Sg => "छ" ; Pl => "छन्"} ;
+}
+
diff --git a/samples/Grammatical Framework/FoodsOri.gf b/samples/Grammatical Framework/FoodsOri.gf
new file mode 100644
index 00000000..ad4f492f
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsOri.gf	
@@ -0,0 +1,30 @@
+concrete FoodsOri of Foods = {
+
+flags coding = utf8 ;
+
+lincat
+    Comment = Str;
+    Item = Str;
+    Kind = Str;
+    Quality = Str;
+
+lin
+    Pred item quality = item ++ quality ++ "ଅଟେ";
+    This kind = "ଏଇ" ++ kind;
+    That kind = "ସେଇ" ++ kind;
+    These kind = "ଏଇ" ++ kind ++ "ଗୁଡିକ" ;
+    Those kind = "ସେଇ" ++ kind ++ "ଗୁଡିକ" ;
+    Mod quality kind = quality ++ kind;
+    Wine  = "ମଦ";
+    Cheese  = "ଛେନା";
+    Fish  = "ମାଛ";
+    Pizza = "ପିଜଜ଼ା" ;
+    Very quality = "ଅତି" ++ quality;
+    Fresh  = "ତାଜା";
+    Warm  = "ଗରମ";
+    Italian  = "ଇଟାଲି";
+    Expensive  = "ମୁଲ୍ୟବାନ୍";
+    Delicious  = "ସ୍ଵାଦିସ୍ଟ ";
+    Boring  = "ଅରୁଚିକର";
+
+}
diff --git a/samples/Grammatical Framework/FoodsPes.gf b/samples/Grammatical Framework/FoodsPes.gf
new file mode 100644
index 00000000..c2e631e8
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsPes.gf	
@@ -0,0 +1,65 @@
+concrete FoodsPes of Foods = {
+
+      flags optimize=noexpand ; coding=utf8 ;
+	  
+      lincat
+        Comment = {s : Str} ;
+		Quality = {s : Add => Str; prep : Str} ;
+        Kind = {s : Add => Number => Str ; prep : Str};
+        Item = {s : Str ; n : Number};
+      lin
+        Pred item quality = {s = item.s ++ quality.s ! Indep ++ copula ! item.n} ;
+        This = det Sg "این" ;
+        That = det Sg "آن" ;
+        These = det Pl "این" ;
+        Those = det Pl "آن" ;
+        
+        Mod quality kind = {s = \\a,n =>  kind.s ! Attr ! n ++ kind.prep ++ quality.s ! a ;                                  
+                            prep = quality.prep             
+                            };
+        Wine = regN "شراب" ; 
+        Cheese = regN "پنیر" ;
+        Fish = regN "ماهى" ;
+        Pizza = regN "پیتزا" ;
+        Very a = {s = \\at => "خیلی" ++ a.s ! at ; prep = a.prep} ;
+        Fresh = adj "تازه" ;
+        Warm = adj "گرم" ;
+        Italian = adj "ایتالیایی" ;
+        Expensive = adj "گران" ;
+        Delicious = adj "لذىذ" ;
+        Boring = adj "ملال آور" ;  -- it must be written as ملال آور. 
+     
+     param
+        Number = Sg | Pl ;
+		Add = Indep | Attr ;
+     oper
+        det : Number -> Str -> {s: Add => Number => Str ; prep : Str} -> {s : Str ; n: Number} =
+           \n,det,noun -> {s = det ++ noun.s ! Indep ! n ; n = n };
+           
+        noun : (x1,_,_,x4 : Str) -> {s : Add => Number => Str ; prep : Str} = \pytzA, pytzAy, pytzAhA,pr -> 
+         {s = \\a,n => case <a,n> of
+		        {<Indep,Sg> => pytzA ; <Indep,Pl> => pytzAhA ;
+  				 <Attr,Sg>  =>pytzA ; <Attr,Pl>  => pytzAhA + "ى" };
+		 prep = pr
+		 };		 
+         
+        regN : Str -> {s: Add => Number => Str ; prep : Str} = \mrd -> 
+		case mrd of 
+		{ _ + ("ا"|"ه"|"ى"|"و"|"") => noun mrd (mrd+"ى") (mrd + "ها") "";
+		  _                        => noun mrd mrd (mrd + "ها") "e"
+		};
+        
+        adj : Str -> {s : Add => Str; prep : Str} = \tAzh -> 
+		case tAzh of 
+		{ _ + ("ا"|"ه"|"ى"|"و"|"") => mkAdj tAzh (tAzh ++ "ى") "" ;
+		  _                        => mkAdj tAzh tAzh "ه"
+        };
+		
+		mkAdj : Str -> Str -> Str -> {s : Add => Str; prep : Str} = \tAzh, tAzhy, pr  ->
+		{s = table {Indep => tAzh;
+		            Attr => tAzhy};
+		 prep = pr 			
+		};
+        copula : Number => Str = table {Sg => "است"; Pl => "هستند"};
+      
+}
\ No newline at end of file
diff --git a/samples/Grammatical Framework/FoodsPor.gf b/samples/Grammatical Framework/FoodsPor.gf
new file mode 100644
index 00000000..6171c707
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsPor.gf	
@@ -0,0 +1,79 @@
+-- (c) 2009 Rami Shashati under LGPL
+
+concrete FoodsPor of Foods = open Prelude in {
+  flags coding=utf8;
+
+	lincat
+	  Comment = {s : Str} ;
+	  Quality = {s : Gender => Number => Str} ;
+	  Kind = {s : Number => Str ; g : Gender} ;
+	  Item = {s : Str ; n : Number ; g : Gender } ;
+
+	lin
+	  Pred item quality =
+	    {s = item.s ++ copula ! item.n ++ quality.s ! item.g ! item.n } ;
+	  This = det Sg (table {Masc => "este" ; Fem => "esta"}) ;
+	  That = det Sg (table {Masc => "esse" ; Fem => "essa"}) ;
+	  These = det Pl (table {Masc => "estes" ; Fem => "estas"}) ;
+	  Those = det Pl (table {Masc => "esses" ; Fem => "essas"}) ;
+
+	  Mod quality kind = { s = \\n => kind.s ! n ++ quality.s ! kind.g ! n ; g = kind.g } ;
+
+	  Wine = regNoun "vinho" Masc ;
+	  Cheese = regNoun "queijo" Masc ;
+	  Fish = regNoun "peixe" Masc ;
+	  Pizza = regNoun "pizza" Fem ;
+
+      Very a = { s = \\g,n => "muito" ++ a.s ! g ! n } ;
+
+      Fresh = mkAdjReg "fresco" ;
+      Warm = mkAdjReg "quente" ;
+      Italian = mkAdjReg "Italiano" ;
+      Expensive = mkAdjReg "caro" ;
+      Delicious = mkAdjReg "delicioso" ;
+      Boring = mkAdjReg "chato" ;
+
+	param
+	  Number = Sg | Pl ;
+	  Gender = Masc | Fem ;
+
+	oper
+	  QualityT : Type = {s : Gender => Number => Str} ;
+
+	  mkAdj : (_,_,_,_ : Str) -> QualityT = \bonito,bonita,bonitos,bonitas -> {
+	  	s = table {
+	  		Masc => table { Sg => bonito ; Pl => bonitos } ;
+	  		Fem => table { Sg => bonita ; Pl => bonitas }
+	    } ;
+	  } ;
+
+	  -- regular pattern
+	  adjSozinho : Str -> QualityT = \sozinho ->
+        let sozinh = Predef.tk 1 sozinho
+        in mkAdj sozinho (sozinh + "a") (sozinh + "os") (sozinh + "as") ;
+
+      -- for gender-independent adjectives
+      adjUtil : Str -> Str -> QualityT = \util,uteis ->
+        mkAdj util util uteis uteis ;
+
+      -- smart paradigm for adjcetives
+      mkAdjReg : Str -> QualityT = \a -> case last a of {
+      	"o" => adjSozinho a ;
+        "e" => adjUtil a (a + "s")
+      } ;
+
+      ItemT : Type = {s : Str ; n : Number ; g : Gender } ;
+
+      det : Number -> (Gender => Str) -> KindT -> ItemT =
+        \num,det,noun -> {s = det ! noun.g ++ noun.s ! num ; n = num ; g = noun.g } ;
+
+	  KindT : Type = {s : Number => Str ; g : Gender} ;
+
+	  noun : Str -> Str -> Gender -> KindT =
+	    \animal,animais,gen -> {s = table {Sg => animal ; Pl => animais} ; g = gen } ;
+
+	  regNoun : Str -> Gender -> KindT =
+	    \carro,gen -> noun carro (carro + "s") gen ;
+
+	  copula : Number => Str = table {Sg => "é" ; Pl => "são"} ;
+}
diff --git a/samples/Grammatical Framework/FoodsRon.gf b/samples/Grammatical Framework/FoodsRon.gf
new file mode 100644
index 00000000..d7d917ff
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsRon.gf	
@@ -0,0 +1,72 @@
+-- (c) 2009 Ramona Enache under LGPL
+
+concrete FoodsRon of Foods = 
+{
+flags coding=utf8 ;
+
+param Number = Sg | Pl ;
+      Gender = Masc | Fem ;
+      NGender = NMasc | NFem | NNeut ;
+lincat 
+Comment = {s : Str};
+Quality = {s : Number => Gender => Str};
+Kind = {s : Number => Str; g : NGender};
+Item = {s : Str ; n : Number; g : Gender};
+
+lin
+
+This = det Sg (mkTab "acest" "această");
+That = det Sg (mkTab "acel" "acea");
+These = det Pl (mkTab "acești" "aceste");
+Those = det Pl (mkTab "acei" "acele");
+
+Wine = mkNoun "vin" "vinuri" NNeut ;
+Cheese = mkNoun "brânză" "brânzeturi" NFem ;
+Fish = mkNoun "peşte" "peşti" NMasc ;
+Pizza = mkNoun "pizza" "pizze" NFem;
+
+Very a = {s = \\n,g => "foarte" ++ a.s ! n ! g};
+
+Fresh = mkAdj "proaspăt" "proaspătă" "proaspeţi" "proaspete" ;
+Warm = mkAdj "cald" "caldă" "calzi" "calde" ;
+Italian = mkAdj "italian" "italiană" "italieni" "italiene" ;
+Expensive = mkAdj "scump" "scumpă" "scumpi" "scumpe" ;
+Delicious = mkAdj "delicios" "delcioasă" "delicioşi" "delicioase" ;
+Boring = mkAdj "plictisitor" "plictisitoare" "plictisitori" "plictisitoare" ;
+
+Pred item quality = {s = item.s ++ copula ! item.n ++ quality.s ! item.n ! item.g} ;
+
+Mod quality kind = {s = \\n => kind.s ! n ++ quality.s ! n ! (getAgrGender kind.g n) ; g = kind.g};
+
+oper 
+
+mkTab : Str -> Str -> {s : Gender => Str} = \acesta, aceasta ->
+{s = table{Masc => acesta;
+      Fem  => aceasta}};
+
+det : Number -> {s : Gender => Str} -> {s : Number => Str ; g : NGender} -> {s : Str; n : Number; g : Gender} =
+\n,det,noun -> let gg = getAgrGender noun.g n 
+  in
+   {s =  det.s ! gg  ++ noun.s ! n  ; n = n ; g = gg};
+
+mkNoun : Str -> Str -> NGender -> {s : Number => Str; g : NGender} = \peste, pesti,g ->
+{s = table {Sg => peste;
+            Pl => pesti};
+ g = g
+};
+
+oper mkAdj : (x1,_,_,x4 : Str) -> {s : Number => Gender => Str} = \scump, scumpa, scumpi, scumpe ->
+{s = \\n,g => case <n,g> of
+{<Sg,Masc> => scump ; <Sg,Fem> => scumpa;
+<Pl,Masc> => scumpi ; <Pl,Fem> => scumpe
+}};
+
+copula : Number => Str = table {Sg => "este" ; Pl => "sunt"};
+
+getAgrGender : NGender -> Number -> Gender = \ng,n ->
+case <ng,n> of
+{<NMasc,_> => Masc ; <NFem,_> => Fem;
+<NNeut,Sg> => Masc ; <NNeut,Pl> => Fem
+};
+
+}
diff --git a/samples/Grammatical Framework/FoodsSpa.gf b/samples/Grammatical Framework/FoodsSpa.gf
new file mode 100644
index 00000000..972282ae
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsSpa.gf	
@@ -0,0 +1,31 @@
+--# -path=.:present
+
+concrete FoodsSpa of Foods = open SyntaxSpa, StructuralSpa, ParadigmsSpa in {
+
+	lincat
+		Comment = Utt ;
+		Item = NP ;
+		Kind = CN ;
+		Quality = AP ;
+
+	lin
+		Pred item quality = mkUtt (mkCl item quality) ;
+		This kind = mkNP this_QuantSg kind ;
+		That kind = mkNP that_QuantSg kind ;
+		These kind = mkNP these_QuantPl kind ;
+		Those kind = mkNP those_QuantPl kind ;
+		Mod quality kind = mkCN quality kind ;
+		Very quality = mkAP very_AdA quality ;
+		Wine = mkCN (mkN "vino") ;
+                Pizza = mkCN (mkN "pizza") ;
+                Cheese = mkCN (mkN "queso") ;
+                Fish = mkCN (mkN "pescado") ;
+                Fresh = mkAP (mkA "fresco") ;
+                Warm = mkAP (mkA "caliente") ;
+                Italian = mkAP (mkA "italiano") ;
+                Expensive = mkAP (mkA "caro") ;
+                Delicious = mkAP (mkA "delicioso") ;
+                Boring = mkAP (mkA "aburrido") ;
+
+}
+
diff --git a/samples/Grammatical Framework/FoodsSwe.gf b/samples/Grammatical Framework/FoodsSwe.gf
new file mode 100644
index 00000000..cbb35fb9
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsSwe.gf	
@@ -0,0 +1,7 @@
+--# -path=.:present
+
+-- (c) 2009 Aarne Ranta under LGPL
+
+concrete FoodsSwe of Foods = FoodsI with 
+  (Syntax = SyntaxSwe),
+  (LexFoods = LexFoodsSwe) ** {flags language = sv_SE;} ;
diff --git a/samples/Grammatical Framework/FoodsTha.gf b/samples/Grammatical Framework/FoodsTha.gf
new file mode 100644
index 00000000..b031a7e2
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsTha.gf	
@@ -0,0 +1,33 @@
+--# -path=.:alltenses
+
+concrete FoodsTha of Foods = open SyntaxTha, LexiconTha,
+  ParadigmsTha, (R=ResTha) in {
+
+        flags coding = utf8 ;
+
+	lincat
+		Comment = Utt ;
+		Item = NP ;
+		Kind = CN ;
+		Quality = AP ;
+
+	lin
+		Pred item quality = mkUtt (mkCl item quality) ;
+		This kind = mkNP this_Det kind ;
+		That kind = mkNP that_Det kind ;
+		These kind = mkNP these_Det kind ;
+		Those kind = mkNP those_Det kind ;
+		Mod quality kind = mkCN quality kind ;
+		Very quality = mkAP very_AdA quality ;
+		Wine = mkCN (mkN (R.thword "เหล้าอ" "งุ่น") "ขวด") ;
+                Pizza = mkCN (mkN (R.thword "พิซ" "ซา") "ถาด") ;
+                Cheese = mkCN (mkN (R.thword "เนย" "แข็ง") "ก้อน") ;
+                Fish = mkCN fish_N ;
+                Fresh = mkAP (mkA "สด") ;
+                Warm = mkAP warm_A ;
+                Italian = mkAP (mkA " อิตาลี") ;
+                Expensive = mkAP (mkA "แพง") ;
+                Delicious = mkAP (mkA "อร่อย") ;
+                Boring = mkAP (mkA (R.thword "น่า" "เบิ่อ")) ;
+
+}
diff --git a/samples/Grammatical Framework/FoodsTsn.gf b/samples/Grammatical Framework/FoodsTsn.gf
new file mode 100644
index 00000000..a7a69a1a
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsTsn.gf	
@@ -0,0 +1,178 @@
+--# -path=alltenses
+
+-- (c) 2009 Laurette Pretorius Sr & Jr and Ansu Berg under LGPL
+
+concrete FoodsTsn of Foods = open Prelude, Predef in {
+	flags coding = utf8;
+	lincat
+		Comment = {s:Str};
+		Item = {s:Str; c:NounClass; n:Number};
+		Kind = {w: Number => Str; r: Str; c: NounClass; q: Number => Str; b: Bool};
+		Quality = {s: NounClass => Number => Str; p_form: Str; t: TType};
+	lin	
+		Pred item quality = {s = item.s ++ ((mkPredDescrCop quality.t) ! item.c ! item.n) ++ quality.p_form};
+
+		This kind = {s = (kind.w ! Sg) ++ (mkDemPron1 ! kind.c ! Sg) ++ (kind.q ! Sg); c = kind.c; n = Sg};
+		That kind = {s = (kind.w ! Sg) ++ (mkDemPron2 ! kind.c ! Sg) ++ (kind.q ! Sg); c = kind.c; n = Sg};
+		These kind = {s = (kind.w ! Pl) ++ (mkDemPron1 ! kind.c ! Pl) ++ (kind.q ! Pl); c = kind.c; n = Pl};
+		Those kind = {s = (kind.w ! Pl) ++ (mkDemPron2 ! kind.c ! Pl) ++ (kind.q ! Pl); c = kind.c; n = Pl};	
+		
+		Mod quality kind = mkMod quality kind;
+
+	-- Lexicon
+		Wine = mkNounNC14_6 "jalwa";
+		Cheese = mkNounNC9_10 "kase";
+		Fish = mkNounNC9_10 "thlapi";
+		Pizza = mkNounNC9_10 "pizza";
+		Very quality = smartVery quality; 
+		Fresh = mkVarAdj "ntsha";
+		Warm = mkOrdAdj "bothitho";
+		Italian = mkPerAdj "Itali";
+		Expensive = mkVerbRel "tura"; 
+		Delicious = mkOrdAdj "monate";
+		Boring = mkOrdAdj "bosula";
+		
+	param
+		NounClass = NC9_10 | NC14_6;
+		Number = Sg | Pl;
+		TType = P | V | ModV | R ;				
+	oper
+		mkMod : {s: NounClass => Number => Str; p_form: Str; t: TType} -> {w: Number => Str; r: Str; c: NounClass; q: Number => Str; b: Bool} -> {w: Number => Str; r: Str; c: NounClass; q: Number => Str; 
+		b: Bool} = \x,y -> case y.b of
+		{
+			True => {w = y.w; r = y.r; c = y.c; 
+				q = table {
+				Sg => ((y.q ! Sg) ++ "le" ++ ((smartQualRelPart (x.t)) ! y.c ! Sg) ++ ((smartDescrCop (x.t)) ! 					y.c ! Sg) ++ (x.s ! y.c ! Sg)); 
+				Pl => ((y.q ! Pl) ++ "le" ++ ((smartQualRelPart (x.t))! y.c ! Pl) ++ ((smartDescrCop (x.t)) ! 					y.c ! Pl) ++(x.s ! y.c ! Pl))
+				  }; b = True
+				};
+			False => {w = y.w; r = y.r; c = y.c; 
+				q = table {
+				Sg => ((y.q ! Sg) ++ ((smartQualRelPart (x.t)) ! y.c ! Sg) ++ ((smartDescrCop (x.t)) ! y.c ! Sg) 					++ (x.s ! y.c ! Sg)); 
+				Pl => ((y.q ! Pl) ++ ((smartQualRelPart (x.t)) ! y.c ! Pl) ++ ((smartDescrCop (x.t)) ! y.c ! Pl) 					++(x.s ! y.c ! Pl))
+				  }; b = True
+				}
+		};
+
+		mkNounNC14_6 : Str -> {w: Number => Str; r: Str; c: NounClass; q: Number => Str; b: Bool} = \x -> {w = table {Sg => "bo" + x; Pl => "ma" + x}; r = x; c = NC14_6; 
+		q = table {Sg => ""; Pl => ""}; b = False};
+		
+		mkNounNC9_10 : Str -> {w: Number => Str; r: Str; c: NounClass; q: Number => Str; b: Bool} = \x -> {w = table {Sg => "" + x; Pl => "di" + x}; r = x; c = NC9_10; 
+		q = table {Sg => ""; Pl => ""}; b = False};
+
+		mkVarAdj : Str -> {s: NounClass => Number => Str; p_form: Str; t: TType} = \x -> 
+		{
+			s = table {
+				NC9_10 => table {Sg => "" + x; Pl => "di" + x};
+				NC14_6 => table {Sg => "bo" + x; Pl => "ma" + x}
+				};
+			p_form = x;
+			t = R;
+		};
+
+		mkOrdAdj : Str -> {s: NounClass => Number => Str; p_form: Str; t: TType} = \x -> 
+		{
+			s = table {
+				NC9_10 => table {Sg => "" + x; Pl => "" + x};
+				NC14_6 => table {Sg => "" + x; Pl => "" + x}
+				};
+			p_form = x;
+			t = R;
+		};
+
+		mkVerbRel : Str -> {s: NounClass => Number => Str; p_form: Str; t: TType} = \x -> 
+		{
+			s = table {
+				NC9_10 => table {Sg => x + "ng"; Pl => x + "ng"};
+				NC14_6 => table {Sg => x + "ng"; Pl => x + "ng"}
+				};
+			p_form = x;
+			t = V;
+		};
+
+		mkPerAdj : Str -> {s: NounClass => Number => Str; p_form: Str; t: TType} = \x -> 
+		{
+			s = table {
+				NC9_10 => table {Sg => "" + x; Pl => "" + x};
+				NC14_6 => table {Sg => "" + x; Pl => "" + x}
+				};
+			p_form = "mo" ++ x;
+			t = P;
+		};
+
+		mkVeryAdj : {s: NounClass => Number => Str; p_form: Str; t: TType} -> {s: NounClass => Number => Str; p_form: Str; t: TType} = \x ->
+		{
+			s = table{c => table{n => (x.s!c!n) ++ "thata"}}; p_form = x.p_form ++ "thata"; t = x.t
+		};
+
+		mkVeryVerb : {s: NounClass => Number => Str; p_form: Str; t: TType} -> {s: NounClass => Number => Str; p_form: Str; t: TType} = \x ->
+		{
+			s = table{c => table{n => (x.s!c!n) ++ "thata"}}; p_form = x.p_form ++ "thata"; t = ModV
+		};
+
+		smartVery : {s: NounClass => Number => Str; p_form: Str; t: TType} -> {s: NounClass => Number => Str; p_form: Str; t: TType} = 
+\x -> case x.t of --(x.s!c!n)
+		{
+			(V | ModV)	=>	mkVeryVerb x;
+			--ModV	=>	mkVeryVerb x;
+			_	=>	mkVeryAdj x
+		};
+
+		mkDemPron1 : NounClass => Number => Str = table
+			{
+				NC9_10 => table {Sg => "e"; Pl => "tse"};
+				NC14_6 => table {Sg => "bo"; Pl => "a"}
+			};
+		
+		mkDemPron2 : NounClass => Number => Str = table
+			{
+				NC9_10 => table {Sg => "eo"; Pl => "tseo"};
+				NC14_6 => table {Sg => "boo"; Pl => "ao"}
+			};
+
+		smartQualRelPart : TType -> (NounClass => Number => Str) = \x -> case x of 
+		{
+			P	=> mkQualRelPart_PName;
+			_	=> mkQualRelPart
+		};
+
+		mkQualRelPart : NounClass => Number => Str = table
+			{
+				NC9_10 => table {Sg => "e"; Pl => "tse"};
+				NC14_6 => table {Sg => "bo"; Pl => "a"}
+			};
+
+		mkQualRelPart_PName : NounClass => Number => Str = table
+			{
+				NC9_10 => table {Sg => "ya"; Pl => "tsa"};
+				NC14_6 => table {Sg => "ba"; Pl => "a"}
+			};
+
+		smartDescrCop : TType -> (NounClass => Number => Str) = \x -> case x of
+		{
+			P	=> mkDescrCop_PName;
+			_	=> mkDescrCop
+		};
+
+		mkDescrCop : NounClass => Number => Str = table
+			{
+				NC9_10 => table {Sg => "e"; Pl => "di"};
+				NC14_6 => table {Sg => "bo"; Pl => "a"}
+			};
+
+		mkDescrCop_PName : NounClass => Number => Str = table
+			{
+				NC9_10 => table {Sg => "ga"; Pl => "ga"};
+				NC14_6 => table {Sg => "ga"; Pl => "ga"}
+			};
+
+		mkPredDescrCop : TType -> (NounClass => Number => Str) = \x -> case x of
+			{
+				V => table 	{NC9_10 => table {Sg => "e" ++ "a"; Pl => "di" ++ "a"};
+						NC14_6 => table {Sg => "bo" ++ "a"; Pl => "a" ++ "a"}};
+
+				_ => table	{NC9_10 => table {Sg => "e"; Pl => "di"};
+						NC14_6 => table {Sg => "bo"; Pl => "a"}}
+			};
+
+}
diff --git a/samples/Grammatical Framework/FoodsTur.gf b/samples/Grammatical Framework/FoodsTur.gf
new file mode 100644
index 00000000..9d6cd035
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsTur.gf	
@@ -0,0 +1,140 @@
+{-
+  File      : FoodsTur.gf
+  Author    : Server Çimen
+  Version   : 1.0
+  Created on: August 26, 2009
+
+  This file contains concrete grammar of Foods abstract grammar for Turkish Language.
+  This grammar is to be used for Fridge demo and developed in the scope of GF Resource
+  Grammar Summer School.
+
+-}
+
+concrete FoodsTur of Foods = open Predef in {
+  flags
+    coding=utf8 ;
+  lincat
+    Comment = {s : Str} ;
+    Quality = {s : Str ; c : Case; softness : Softness; h : Harmony} ;
+    Kind = {s : Case => Number => Str} ;
+    Item = {s : Str; n : Number} ;
+  lin
+    This = det Sg "bu" ;
+    That = det Sg "şu" ;
+    These = det Pl "bu" ;
+    Those = det Pl "şu" ;
+    -- Reason for excluding plural form of copula: In Turkish if subject is not a human being,
+    -- then singular form of copula is used regardless of the number of subject. Since all
+    -- possible subjects are non human, copula do not need to have plural form.
+    Pred item quality = {s = item.s ++ quality.s ++ "&+" ++ copula ! quality.softness ! quality.h} ;--! item.n} ;
+    Mod quality kind = {s = case quality.c of {
+                              Nom => \\t,n => quality.s ++ kind.s ! t ! n ;
+                              Gen => \\t,n => quality.s ++ kind.s ! Gen ! n
+                            }
+                       } ;
+    Wine = mkN "şarap" "şaraplar" "şarabı" "şarapları" ;
+    Cheese = mkN "peynir" "peynirler" "peyniri" "peynirleri" ;
+    Fish = mkN "balık" "balıklar" "balığı" "balıkları" ;
+    Pizza = mkN "pizza" "pizzalar" "pizzası" "pizzaları" ;
+    Very a = {s = "çok" ++ a.s ; c = a.c; softness = a.softness; h = a.h} ;
+    Fresh = adj "taze" Nom;
+    Warm = adj "ılık" Nom;
+    Italian = adj "İtalyan" Gen ;
+    Expensive = adj "pahalı" Nom;
+    Delicious = adj "lezzetli" Nom;
+    Boring = adj "sıkıcı" Nom;
+  param
+    Number = Sg | Pl ;
+    Case = Nom | Gen ;
+    Harmony = I_Har | Ih_Har | U_Har | Uh_Har ; --Ih = İ; Uh = Ü
+    Softness = Soft | Hard ;
+  oper
+    det : Number -> Str -> {s : Case => Number => Str} -> {s : Str; n : Number} =
+      \num,det,noun -> {s = det ++ noun.s ! Nom ! num; n = num} ;
+    mkN = overload {
+      mkN : Str -> Str -> {s : Case => Number => Str} = regNoun ;
+      mkn : Str -> Str -> Str -> Str-> {s : Case => Number => Str} = noun ;
+    } ;
+    regNoun : Str -> Str -> {s : Case => Number => Str} =
+      \peynir,peynirler -> noun peynir peynirler [] [] ;
+    noun : Str -> Str -> Str -> Str-> {s : Case => Number => Str} = 
+      \sarap,saraplar,sarabi,saraplari -> {
+        s = table {
+	      Nom =>  table {
+			Sg => sarap ;
+			Pl => saraplar
+	              } ;
+              Gen =>  table {
+                        Sg => sarabi ;
+			Pl => saraplari
+	              }
+              }
+      };
+  {-
+    Since there is a bug in overloading, this overload is useless.
+
+    mkA = overload {
+      mkA : Str -> {s : Str; c : Case; softness : Softness; h : Harmony} = \base -> adj base Nom ;
+      mkA : Str -> Case -> {s : Str; c : Case; softness : Softness; h : Harmony} = adj ;
+    } ;
+  -}
+    adj : Str -> Case -> {s : Str; c : Case; softness : Softness; h : Harmony} =
+      \italyan,ca -> {s = italyan ; c = ca; softness = (getSoftness italyan); h = (getHarmony italyan)} ;
+    -- See the comment at lines 26 and 27 for excluded plural form of copula.
+    copula : Softness => Harmony {-=> Number-} => Str =
+      table {
+        Soft => table {
+                  I_Har => "dır" ;--table {
+			   -- Sg => "dır" ;
+			   -- Pl => "dırlar"
+		  --} ;
+		  Ih_Har => "dir" ;--table {
+			    --Sg => "dir" ;
+			    --Pl => "dirler"
+		  --} ;
+		  U_Har => "dur" ;--table {
+			   -- Sg => "dur" ;
+			   -- Pl => "durlar"
+		  --} ;
+		  Uh_Har => "dür" --table {
+			    --Sg => "dür" ;
+			    --Pl => "dürler"
+		  --}
+        } ;
+        Hard => table {
+                  I_Har => "tır" ;--table {
+			    --Sg => "tır" ;
+			    --Pl => "tırlar"
+		  --} ;
+		  Ih_Har => "tir" ;--table {
+			    --Sg => "tir" ;
+			    --Pl => "tirler"
+		  --} ;
+		  U_Har => "tur" ;--table {
+			   -- Sg => "tur" ;
+			   -- Pl => "turlar"
+		  --} ;
+		  Uh_Har => "tür"--table {
+			    --Sg => "tür" ;
+			    --Pl => "türler"
+		  --}
+        }
+      } ;
+
+    getHarmony : Str -> Harmony
+      = \base -> case base of {
+                 _+c@("ı"|"a"|"i"|"e"|"u"|"o"|"ü"|"ö")+
+                 ("b"|"v"|"d"|"z"|"j"|"c"|"g"|"ğ"|"l"|"r"|"m"|"n"|"y"|"p"|"f"|"t"|"s"|"ş"|"ç"|"k"|"h")* =>
+                    case c of {
+                      ("ı"|"a") => I_Har ;
+                      ("i"|"e") => Ih_Har ;
+                      ("u"|"o") => U_Har  ;
+                      ("ü"|"ö") => Uh_Har
+                    }
+        } ;
+    getSoftness : Str -> Softness
+      = \base -> case base of {
+		   _+("f"|"s"|"t"|"k"|"ç"|"ş"|"h"|"p") => Hard ;
+		   _ => Soft
+		 } ;
+}
\ No newline at end of file
diff --git a/samples/Grammatical Framework/FoodsUrd.gf b/samples/Grammatical Framework/FoodsUrd.gf
new file mode 100644
index 00000000..186b2f92
--- /dev/null
+++ b/samples/Grammatical Framework/FoodsUrd.gf	
@@ -0,0 +1,53 @@
+-- (c) 2009 Shafqat Virk under LGPL
+
+concrete FoodsUrd of Foods = {
+
+  flags coding=utf8 ;
+
+  
+	  param Number = Sg | Pl ;
+        param Gender = Masc | Fem;
+	  
+	 oper coupla : Number -> Str =\n -> case n of {Sg => "ہے" ; Pl => "ہیں"};
+	  
+	 	  
+      lincat
+        Comment = {s : Str} ; 
+	  Item = {s: Str ; n: Number ; g:Gender};
+	  Kind = {s: Number => Str ; g:Gender};
+        Quality = {s: Gender => Number => Str};
+  
+   lin
+    Pred item quality = {s = item.s ++ quality.s ! item.g ! item.n ++  coupla item.n} ;
+	This kind = {s = "یھ" ++ kind.s ! Sg; n= Sg ; g = kind.g } ;
+	These kind = {s = "یھ" ++ kind.s ! Pl; n = Pl ; g = kind.g} ;
+    That kind = {s = "وہ"  ++ kind.s ! Sg; n= Sg ; g = kind.g} ;
+	Those kind = {s = "وہ" ++ kind.s ! Pl; n=Pl ; g = kind.g} ;
+    Mod quality kind = {s = \\n => quality.s ! kind.g ! n  ++ kind.s ! n ;  g = kind.g};
+	Wine = {s = table { Sg => "شراب" ; Pl => "شرابیں"} ; g = Fem};
+    Cheese = {s = table { Sg => "پنیر" ; Pl => "پنیریں"} ; g = Fem};
+    Fish = {s = table { Sg => "مچھلی" ; Pl => "مچھلیاں"} ; g = Fem};
+    Pizza = {s = table { Sg => "پیزہ" ; Pl => "پیزے"} ; g = Masc};
+	Very quality = {s = \\g,n => "بہت" ++ quality.s ! g ! n} ;
+    Fresh = regAdj "تازہ" ;
+    Warm = regAdj "گرم" ;
+    Italian = regAdj "اٹا لوی" ;
+    Expensive = regAdj "مہنگا" ;
+    Delicious = regAdj "مزیدار" ;
+    Boring = regAdj "فضول" ;
+   
+   oper
+    regAdj : Str -> {s: Gender => Number => Str} = \a -> case a of {
+        x + "ا" => mkAdj a (x+"ے") (x+"ی");
+        _      => mkAdj a a a
+       };
+    mkAdj : Str -> Str -> Str -> {s: Gender => Number => Str} = \s,p,f -> {
+      s = table {
+           Masc => table {
+              Sg => s;
+              Pl => p
+              };
+           Fem => \\_ => f
+         }
+       };
+	}  
\ No newline at end of file
diff --git a/samples/Grammatical Framework/LexFoods.gf b/samples/Grammatical Framework/LexFoods.gf
new file mode 100644
index 00000000..12ace208
--- /dev/null
+++ b/samples/Grammatical Framework/LexFoods.gf	
@@ -0,0 +1,15 @@
+-- (c) 2009 Aarne Ranta under LGPL
+
+interface LexFoods = open Syntax in {
+  oper
+    wine_N : N ;
+    pizza_N : N ;
+    cheese_N : N ;
+    fish_N : N ;
+    fresh_A : A ;
+    warm_A : A ;
+    italian_A : A ;
+    expensive_A : A ;
+    delicious_A : A ;
+    boring_A : A ;
+}
diff --git a/samples/Grammatical Framework/LexFoodsCat.gf b/samples/Grammatical Framework/LexFoodsCat.gf
new file mode 100644
index 00000000..624fc98c
--- /dev/null
+++ b/samples/Grammatical Framework/LexFoodsCat.gf	
@@ -0,0 +1,18 @@
+-- (c) 2009 Jordi Saludes under LGPL
+
+instance LexFoodsCat of LexFoods = 
+    open SyntaxCat, ParadigmsCat, (M = MorphoCat) in {
+  flags
+	coding = utf8 ;
+  oper
+    wine_N = mkN "vi" "vins" M.Masc ;
+    pizza_N = mkN "pizza" ;
+    cheese_N = mkN "formatge" ;
+    fish_N = mkN "peix" "peixos" M.Masc;
+    fresh_A = mkA "fresc" "fresca" "frescos" "fresques" "frescament";
+    warm_A = mkA "calent" ;
+    italian_A = mkA "italià" "italiana" "italians" "italianes" "italianament" ;
+    expensive_A = mkA "car" ;
+    delicious_A = mkA "deliciós" "deliciosa" "deliciosos" "delicioses" "deliciosament";
+    boring_A = mkA "aburrit" "aburrida" "aburrits" "aburrides" "aburridament" ;
+}
diff --git a/samples/Grammatical Framework/LexFoodsFin.gf b/samples/Grammatical Framework/LexFoodsFin.gf
new file mode 100644
index 00000000..dbf8af6b
--- /dev/null
+++ b/samples/Grammatical Framework/LexFoodsFin.gf	
@@ -0,0 +1,21 @@
+-- (c) 2009 Aarne Ranta under LGPL
+
+instance LexFoodsFin of LexFoods =
+    open SyntaxFin, ParadigmsFin in {
+  flags coding=utf8;
+  oper
+    wine_N = mkN "viini" ;
+    pizza_N = mkN "pizza" ;
+    cheese_N = mkN "juusto" ;
+    fish_N = mkN "kala" ;
+    fresh_A = mkA "tuore" ;
+    warm_A = mkA
+    (mkN "lämmin" "lämpimän" "lämmintä" "lämpimänä" "lämpimään"
+         "lämpiminä" "lämpimiä" "lämpimien" "lämpimissä" "lämpimiin"
+	 )
+    "lämpimämpi" "lämpimin" ;
+    italian_A = mkA "italialainen" ;
+    expensive_A = mkA "kallis" ;
+    delicious_A = mkA "herkullinen" ;
+    boring_A = mkA "tylsä" ;
+}
diff --git a/samples/Grammatical Framework/LexFoodsGer.gf b/samples/Grammatical Framework/LexFoodsGer.gf
new file mode 100644
index 00000000..253384f2
--- /dev/null
+++ b/samples/Grammatical Framework/LexFoodsGer.gf	
@@ -0,0 +1,17 @@
+-- (c) 2009 Aarne Ranta under LGPL
+
+instance LexFoodsGer of LexFoods =
+    open SyntaxGer, ParadigmsGer in {
+  flags coding=utf8;
+  oper
+    wine_N = mkN "Wein" ;
+    pizza_N = mkN "Pizza" "Pizzen" feminine ;
+    cheese_N = mkN "Käse" "Käse" masculine ;
+    fish_N = mkN "Fisch" ;
+    fresh_A = mkA "frisch" ;
+    warm_A = mkA "warm" "wärmer" "wärmste" ;
+    italian_A = mkA "italienisch" ;
+    expensive_A = mkA "teuer" ;
+    delicious_A = mkA "köstlich" ;
+    boring_A = mkA "langweilig" ;
+}
diff --git a/samples/Grammatical Framework/LexFoodsIta.gf b/samples/Grammatical Framework/LexFoodsIta.gf
new file mode 100644
index 00000000..11de5fcd
--- /dev/null
+++ b/samples/Grammatical Framework/LexFoodsIta.gf	
@@ -0,0 +1,16 @@
+-- (c) 2009 Aarne Ranta under LGPL
+
+instance LexFoodsIta of LexFoods = 
+    open SyntaxIta, ParadigmsIta in {
+  oper
+    wine_N = mkN "vino" ;
+    pizza_N = mkN "pizza" ;
+    cheese_N = mkN "formaggio" ;
+    fish_N = mkN "pesce" ;
+    fresh_A = mkA "fresco" ;
+    warm_A = mkA "caldo" ;
+    italian_A = mkA "italiano" ;
+    expensive_A = mkA "caro" ;
+    delicious_A = mkA "delizioso" ;
+    boring_A = mkA "noioso" ;
+}
diff --git a/samples/Grammatical Framework/LexFoodsSwe.gf b/samples/Grammatical Framework/LexFoodsSwe.gf
new file mode 100644
index 00000000..f9f02c33
--- /dev/null
+++ b/samples/Grammatical Framework/LexFoodsSwe.gf	
@@ -0,0 +1,17 @@
+-- (c) 2009 Aarne Ranta under LGPL
+
+instance LexFoodsSwe of LexFoods =
+    open SyntaxSwe, ParadigmsSwe in {
+  flags coding=utf8;
+  oper
+    wine_N = mkN "vin" "vinet" "viner" "vinerna" ;
+    pizza_N = mkN "pizza" ;
+    cheese_N = mkN "ost" ;
+    fish_N = mkN "fisk" ;
+    fresh_A = mkA "färsk" ;
+    warm_A = mkA "varm" ;
+    italian_A = mkA "italiensk" ;
+    expensive_A = mkA "dyr" ;
+    delicious_A = mkA "läcker" ;
+    boring_A = mkA "tråkig" ;
+}
diff --git a/samples/Grammatical Framework/ResCze.gf b/samples/Grammatical Framework/ResCze.gf
new file mode 100644
index 00000000..56b4aa6e
--- /dev/null
+++ b/samples/Grammatical Framework/ResCze.gf	
@@ -0,0 +1,46 @@
+-- (c) 2011 Katerina Bohmova under LGPL
+
+resource ResCze = open Prelude in {
+  flags 
+    coding = utf8 ;
+  param
+    Number = Sg | Pl ;
+    Gender = Masc | Fem | Neutr;
+  oper
+    NounPhrase : Type = 
+      {s : Str ; g : Gender ; n : Number} ; 
+    Noun : Type = {s : Number => Str ; g : Gender} ;
+    Adjective : Type = {s : Gender => Number => Str} ;
+
+    det : Number -> Str -> Str -> Str -> Noun -> NounPhrase =
+      \n,m,f,ne,cn -> {
+        s = table {Masc => m ; Fem => f; Neutr => ne} ! cn.g ++ 
+            cn.s ! n ;
+        g = cn.g ;
+        n = n
+      } ;
+    noun : Str -> Str -> Gender -> Noun =
+      \muz,muzi,g -> {
+        s = table {Sg => muz ; Pl => muzi} ;
+        g = g
+      } ;
+    adjective : (msg,fsg,nsg,mpl,fpl,npl : Str) -> Adjective =
+      \msg,fsg,nsg,mpl,fpl,npl -> {
+        s = table {
+          Masc => table {Sg => msg ; Pl => mpl} ; 
+          Fem => table {Sg => fsg ; Pl => fpl}  ;
+          Neutr => table {Sg => nsg ; Pl => npl}
+          }
+        } ;
+    regAdj : Str -> Adjective = 
+      \mlad ->
+      adjective (mlad+"ý") (mlad+"á") (mlad+"é")
+		 (mlad+"é") (mlad+"é") (mlad+"á") ;
+    regnfAdj : Str -> Adjective = 
+      \vynikajici ->
+      adjective vynikajici vynikajici vynikajici 
+		vynikajici vynikajici vynikajici;
+    copula : Number => Str = 
+      table {Sg => "je" ; Pl => "jsou"} ;
+}
+
diff --git a/samples/Grammatical Framework/transFoodsHin.gf b/samples/Grammatical Framework/transFoodsHin.gf
new file mode 100644
index 00000000..21d1d2ac
--- /dev/null
+++ b/samples/Grammatical Framework/transFoodsHin.gf	
@@ -0,0 +1,75 @@
+-- (c) 2009 Aarne Ranta under LGPL
+
+concrete FoodsHin of Foods = {
+
+  flags coding=utf8 ;
+
+  param
+    Gender = Masc | Fem ;
+    Number = Sg | Pl ;
+  lincat
+    Comment = {s : Str} ;
+    Item    = {s : Str ; g : Gender ; n : Number} ;
+    Kind    = {s : Number => Str ; g : Gender} ;
+    Quality = {s : Gender => Number => Str} ;
+  lin
+    Pred item quality = {
+      s = item.s ++ quality.s ! item.g ! item.n ++ copula item.n
+      } ;
+    This kind = {s = "yah" ++ kind.s ! Sg ; g = kind.g ; n = Sg} ;
+    That kind = {s = "vah" ++ kind.s ! Sg ; g = kind.g ; n = Sg} ;
+    These kind = {s = "ye" ++ kind.s ! Pl ; g = kind.g ; n = Pl} ;
+    Those kind = {s = "ve" ++ kind.s ! Pl ; g = kind.g ; n = Pl} ;
+    Mod quality kind = {
+      s = \\n => quality.s ! kind.g ! n ++ kind.s ! n ; 
+      g = kind.g
+      } ;
+    Wine = regN "madirA" ;
+    Cheese = regN "panIr" ;
+    Fish = regN "maClI" ;
+    Pizza = regN "pijjA" ;
+    Very quality = {s = \\g,n => "bahut" ++ quality.s ! g ! n} ;
+    Fresh = regAdj "tAzA" ;
+    Warm = regAdj "garam" ;
+    Italian = regAdj "i-t.alI" ; 
+    Expensive = regAdj "mahaNgA" ;
+    Delicious = regAdj "rucikar" ;
+    Boring = regAdj "pEriyA" ;
+
+  oper
+    mkN : Str -> Str -> Gender -> {s : Number => Str ; g : Gender} = 
+      \s,p,g -> {
+        s = table {
+          Sg => s ;
+          Pl => p
+          } ;
+        g = g
+      } ;
+
+    regN : Str -> {s : Number => Str ; g : Gender} = \s -> case s of {
+      lark + "A" => mkN s (lark + "e") Masc ;
+      lark + "I" => mkN s (lark + "iyaM") Fem ;
+      _           => mkN s s Masc 
+      } ;
+
+    mkAdj : Str -> Str -> Str -> {s : Gender => Number => Str} = \ms,mp,f -> {
+      s = table {
+        Masc => table {
+          Sg => ms ;
+          Pl => mp
+          } ;
+        Fem  => \\_ => f
+        }
+      } ;
+
+    regAdj : Str -> {s : Gender => Number => Str} = \a -> case a of {
+      acch + "A" => mkAdj a (acch + "e") (acch + "I") ;
+      _          => mkAdj a a a
+      } ;
+
+    copula : Number -> Str = \n -> case n of {
+      Sg => "hE" ;
+      Pl => "hEN"
+      } ;
+
+  }
diff --git a/samples/Groovy/script.gvy b/samples/Groovy/script.gvy
new file mode 100644
index 00000000..25ef2eab
--- /dev/null
+++ b/samples/Groovy/script.gvy
@@ -0,0 +1,2 @@
+#!/usr/bin/env groovy
+println "Hello World"
diff --git a/samples/Groovy/template.grt b/samples/Groovy/template.grt
new file mode 100644
index 00000000..59bb9c22
--- /dev/null
+++ b/samples/Groovy/template.grt
@@ -0,0 +1,9 @@
+html {
+  head {
+    component "bootstrap"
+    title "Bootstrap Template"
+  }
+  
+  html {
+  }
+}
diff --git a/samples/Groovy/template.gtpl b/samples/Groovy/template.gtpl
new file mode 100644
index 00000000..f2e594d1
--- /dev/null
+++ b/samples/Groovy/template.gtpl
@@ -0,0 +1,9 @@
+html {
+  head {
+    title "Example Template"
+  }
+  
+  body {
+    p "This is a quick template example"
+  }
+}
diff --git a/samples/HTML/ApiOverviewPage.st b/samples/HTML/ApiOverviewPage.st
new file mode 100644
index 00000000..4faa1935
--- /dev/null
+++ b/samples/HTML/ApiOverviewPage.st
@@ -0,0 +1,60 @@
+<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Frameset//EN""http://www.w3.org/TR/REC-html40/frameset.dtd">
+<html>
+<head>
+$Common_meta()$
+<title>
+Android API Differences Report
+</title>
+<body>
+<div class="body">
+
+$Header()$
+
+
+<div class="content">
+<h2>Android API Differences Report</h2>
+<p>This document details the changes in the Android framework API. It shows 
+additions, modifications, and removals for packages, classes, methods, and 
+fields. Each reference to an API change includes a brief description of the 
+API and an explanation of the change and suggested workaround, where available.</p>
+
+<p>The differences described in this report are based a comparison of the APIs 
+whose versions are specified in the upper-right corner of this page. It compares a 
+newer "to" API to an older "from" version, noting any changes relative to the 
+older API. So, for example, indicated API removals are no longer present in the "to" 
+API.</p>
+<p>For more information about the Android framework API and SDK, 
+see the <a href="http://code.google.com/android/index.html" target="_top">Android product site</a>.</p>
+
+$if(no_delta)$
+<h3>Congratulation!</h3>
+No differences were detected between the two provided APIs.
+$endif$
+
+
+$if(removed_packages)$
+$Table(name="Removed Packages", rows=removed_packages:{$it.from:ModelElementRow()$})$
+<br/>
+$endif$
+
+
+$if(added_packages)$
+$Table(name="Added Packages", rows=added_packages:{$it.to:PackageAddedLink()$}:SimpleTableRow())$
+<br/>
+$endif$
+
+$if(changed_packages)$
+$Table(name="Changed Packages", rows=changed_packages:{$it.to:PackageChangedLink()$}:SimpleTableRow())$
+<br/>
+$endif$
+</div>
+
+
+</div>
+</body>
+</html>
+
+
+
+
+
diff --git a/samples/HTML/pages.html b/samples/HTML/pages.html
new file mode 100644
index 00000000..e068e4fa
--- /dev/null
+++ b/samples/HTML/pages.html
@@ -0,0 +1,31 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
+<title>Related Pages</title>
+<link href="qt.css" rel="stylesheet" type="text/css"/>
+</head>
+<body>
+<div class=header>
+<a class=headerLink  href="index.html">Main Page</a> &middot;
+<a class=headerLink  href="classoverview.html">Class Overview</a> &middot;
+<a class=headerLink  href="hierarchy.html">Hierarchy</a> &middot;
+<a class=headerLink  href="annotated.html">All Classes</a>
+</div>
+<!-- Generated by Doxygen 1.8.1.2 -->
+</div><!-- top -->
+<div class="header">
+  <div class="headertitle">
+<div class="title">Related Pages</div>  </div>
+</div><!--header-->
+<div class="contents">
+<div class="textblock">Here is a list of all related documentation pages:</div><div class="directory">
+<table class="directory">
+<tr id="row_0_" class="even"><td class="entry"><img src="ftv2node.png" alt="o" width="16" height="22" /><a class="el" href="classoverview.html" target="_self">Class Overview</a></td><td class="desc"></td></tr>
+<tr id="row_1_"><td class="entry"><img src="ftv2lastnode.png" alt="\" width="16" height="22" /><a class="el" href="thelayoutsystem.html" target="_self">The Layout System</a></td><td class="desc"></td></tr>
+</table>
+</div><!-- directory -->
+</div><!-- contents -->
+<div class="footer" />Generated with <a href="http://www.doxygen.org/index.html">Doxygen</a> 1.8.1.2</div>
+</body>
+</html>
diff --git a/samples/Haskell/Hello.hs b/samples/Haskell/Hello.hs
new file mode 100644
index 00000000..cef0b4a9
--- /dev/null
+++ b/samples/Haskell/Hello.hs
@@ -0,0 +1,6 @@
+import Data.Char
+
+main :: IO ()
+main = do
+	let hello = "hello world"
+	putStrLn $ map toUpper hello
\ No newline at end of file
diff --git a/samples/Haskell/Main.hs b/samples/Haskell/Main.hs
new file mode 100644
index 00000000..4a37a8c0
--- /dev/null
+++ b/samples/Haskell/Main.hs
@@ -0,0 +1,33 @@
+module Main where
+
+import Sudoku
+import Data.Maybe
+
+
+sudoku :: Sudoku
+sudoku = [8, 0, 1, 3, 4, 0, 0, 0, 0,
+          4, 3, 0, 8, 0, 0, 1, 0, 7,
+          0, 0, 0, 0, 6, 0, 0, 0, 3,
+          2, 0, 8, 0, 5, 0, 0, 0, 9,
+          0, 0, 9, 0, 0, 0, 7, 0, 0,
+          6, 0, 0, 0, 7, 0, 8, 0, 4,
+          3, 0, 0, 0, 1, 0, 0, 0, 0,
+          1, 0, 5, 0, 0, 6, 0, 4, 2,
+          0, 0, 0, 0, 2, 4, 3, 0, 8]
+
+{-
+sudoku :: Sudoku
+sudoku = [8, 6, 1, 3, 4, 7, 2, 9, 5,
+		  4, 3, 2, 8, 9, 5, 1, 6, 7,
+		  9, 5, 7, 1, 6, 2, 4, 8, 3,
+		  2, 7, 8, 4, 5, 1, 6, 3, 9,
+		  5, 4, 9, 6, 8, 3, 7, 2, 1,
+		  6, 1, 3, 2, 7, 9, 8, 5, 4,
+		  3, 2, 4, 9, 1, 8, 5, 7, 6,
+		  1, 8, 5, 7, 3, 6, 9, 4, 2,
+		  7, 9, 6, 5, 2, 4, 3, 1, 8]
+-}
+main :: IO ()
+main = do
+	putStrLn $ pPrint sudoku ++ "\n\n"
+	putStrLn $ pPrint $ fromMaybe [] $ solve sudoku
\ No newline at end of file
diff --git a/samples/Haskell/Sudoku.hs b/samples/Haskell/Sudoku.hs
new file mode 100644
index 00000000..ca6122e3
--- /dev/null
+++ b/samples/Haskell/Sudoku.hs
@@ -0,0 +1,46 @@
+module Sudoku
+(
+  Sudoku,
+  solve,
+  isSolved,
+  pPrint
+) where
+
+import Data.Maybe
+import Data.List
+import Data.List.Split
+
+type Sudoku = [Int]
+
+solve :: Sudoku -> Maybe Sudoku
+solve sudoku
+  | isSolved sudoku = Just sudoku
+  | otherwise = do
+    index <- elemIndex 0 sudoku
+    let sudokus = [nextTest sudoku index i | i <- [1..9],
+                                  checkRow (nextTest sudoku index i) index,
+                                  checkColumn (nextTest sudoku index i) index,
+                                  checkBox (nextTest sudoku index i) index]
+    listToMaybe $ mapMaybe solve sudokus
+  where nextTest sudoku index i = take index sudoku ++ [i] ++ drop (index+1) sudoku
+        checkRow sudoku index = (length $ getRow sudoku index) == (length $ nub $ getRow sudoku index)
+        checkColumn sudoku index = (length $ getColumn sudoku index) == (length $ nub $ getColumn sudoku index)
+        checkBox sudoku index = (length $ getBox sudoku index) == (length $ nub $ getBox sudoku index)
+        getRow sudoku index = filter (/=0) $ (chunksOf 9 sudoku) !! (quot index 9)
+        getColumn sudoku index = filter (/=0) $ (transpose $ chunksOf 9 sudoku) !! (mod index 9)
+        getBox sudoku index = filter (/=0) $ (map concat $ concatMap transpose $ chunksOf 3 $ map (chunksOf 3) $ chunksOf 9 sudoku)
+                                                                                !! (3 * (quot index 27) + (quot (mod index 9) 3))
+
+isSolved :: Sudoku -> Bool
+isSolved sudoku
+  | product sudoku == 0 = False
+  | map (length . nub) sudokuRows /= map length sudokuRows = False
+  | map (length . nub) sudokuColumns /= map length sudokuColumns = False
+  | map (length . nub) sudokuBoxes /= map length sudokuBoxes = False
+  | otherwise = True
+  where sudokuRows = chunksOf 9 sudoku
+        sudokuColumns = transpose sudokuRows
+        sudokuBoxes = map concat $ concatMap transpose $ chunksOf 3 $ map (chunksOf 3) $ chunksOf 9 sudoku
+
+pPrint :: Sudoku -> String
+pPrint sudoku = intercalate "\n" $ map (intercalate " " . map show) $ chunksOf 9 sudoku
\ No newline at end of file
diff --git a/samples/Hy/fibonacci.hy b/samples/Hy/fibonacci.hy
new file mode 100644
index 00000000..9ccdd76c
--- /dev/null
+++ b/samples/Hy/fibonacci.hy
@@ -0,0 +1,9 @@
+;; Fibonacci example in Hy.
+
+(defn fib [n]
+  (if (<= n 2) n
+      (+ (fib (- n 1)) (fib (- n 2)))))
+
+(if (= __name__ "__main__")
+  (for [x [1 2 3 4 5 6 7 8]]
+    (print (fib x))))
diff --git a/samples/Hy/hello-world.hy b/samples/Hy/hello-world.hy
new file mode 100644
index 00000000..181095e1
--- /dev/null
+++ b/samples/Hy/hello-world.hy
@@ -0,0 +1,13 @@
+;; The concurrent.futures example in Hy.
+
+(import [concurrent.futures [ThreadPoolExecutor as-completed]]
+        [random [randint]]
+        [sh [sleep]])
+
+(defn task-to-do []
+  (sleep (randint 1 5)))
+
+(with-as (ThreadPoolExecutor 10) executor
+  (setv jobs (list-comp (.submit executor task-to-do) (x (range 0 10))))
+  (for (future (as-completed jobs))
+    (.result future)))
diff --git a/samples/IDL/mg_acosh.pro b/samples/IDL/mg_acosh.pro
new file mode 100644
index 00000000..1510f09f
--- /dev/null
+++ b/samples/IDL/mg_acosh.pro
@@ -0,0 +1,29 @@
+; docformat = 'rst'
+
+;+
+; Inverse hyperbolic cosine. Uses the formula:
+; 
+; $$\text{acosh}(z) = \ln(z + \sqrt{z + 1} \sqrt{z - 1})$$
+;
+; :Examples:
+;    The arc hyperbolic sine function looks like::
+;
+;       IDL> x = 2.5 * findgen(1000) / 999. + 1.
+;       IDL> plot, x, mg_acosh(x), xstyle=1
+;
+;    This should look like:
+;
+;    .. image:: acosh.png
+;
+; :Returns:
+;    float, double, complex, or double complex depending on the input
+;
+; :Params:
+;    z : in, required, type=numeric
+;       input
+;-
+function mg_acosh, z
+  compile_opt strictarr
+  
+  return, alog(z + sqrt(z + 1) * sqrt(z - 1))
+end
\ No newline at end of file
diff --git a/samples/IDL/mg_analysis.dlm b/samples/IDL/mg_analysis.dlm
new file mode 100644
index 00000000..6cb7881f
--- /dev/null
+++ b/samples/IDL/mg_analysis.dlm
@@ -0,0 +1,9 @@
+MODULE mg_analysis
+DESCRIPTION Tools for analysis
+VERSION 1.0
+SOURCE mgalloy
+BUILD_DATE January 18, 2011
+
+FUNCTION MG_ARRAY_EQUAL      2 2 KEYWORDS
+FUNCTION MG_TOTAL            1 1
+
diff --git a/samples/IDL/mg_gcd.pro b/samples/IDL/mg_gcd.pro
new file mode 100644
index 00000000..2287723f
--- /dev/null
+++ b/samples/IDL/mg_gcd.pro
@@ -0,0 +1,35 @@
+; docformat = 'rst'
+
+;+
+; Find the greatest common denominator (GCD) for two positive integers.
+; 
+; :Returns:
+;    integer
+;
+; :Params:
+;    a : in, required, type=integer
+;       first integer
+;    b : in, required, type=integer
+;       second integer
+;-
+function mg_gcd, a, b
+  compile_opt strictarr
+  on_error, 2
+  
+  if (n_params() ne 2) then message, 'incorrect number of arguments'
+  if (~mg_isinteger(a) || ~mg_isinteger(b)) then begin
+    message, 'integer arguments required'
+  endif
+  
+  _a = abs(a)
+  _b = abs(b)
+  minArg = _a < _b
+  maxArg = _a > _b
+  
+  if (minArg eq 0) then return, maxArg
+  
+  remainder = maxArg mod minArg
+  if (remainder eq 0) then return, minArg
+  
+  return, mg_gcd(minArg, remainder)
+end
diff --git a/samples/IDL/mg_trunc.pro b/samples/IDL/mg_trunc.pro
new file mode 100644
index 00000000..c5288908
--- /dev/null
+++ b/samples/IDL/mg_trunc.pro
@@ -0,0 +1,42 @@
+; docformat = 'rst'
+
+;+
+; Truncate argument towards 0.0, i.e., takes the `FLOOR` of positive values
+; and the `CEIL` of negative values.
+;
+; :Examples:
+;   Try the main-level program at the end of this file. It does::
+;
+;      IDL> print, mg_trunc([1.2, -1.2, 0.0])
+;                 1          -1           0
+;      IDL> print, floor([1.2, -1.2, 0.0])
+;                 1          -2           0
+;      IDL> print, ceil([1.2, -1.2, 0.0])
+;                 2          -1           0
+;
+; :Returns:
+;    array of same type as argument
+;
+; :Params:
+;    x : in, required, type=float/double
+;       array containing values to truncate
+;-
+function mg_trunc, x
+  compile_opt strictarr
+  
+  result = ceil(x)
+  posInd = where(x gt 0, nposInd)
+  
+  if (nposInd gt 0L) then begin
+    result[posInd] = floor(x[posInd])
+  endif
+  
+  return, result
+end
+
+
+; main-level example program
+
+print, mg_trunc([1.2, -1.2, 0.0])
+
+end
diff --git a/samples/Inform 7/Trivial Extension.i7x b/samples/Inform 7/Trivial Extension.i7x
new file mode 100644
index 00000000..1aae1b85
--- /dev/null
+++ b/samples/Inform 7/Trivial Extension.i7x	
@@ -0,0 +1,6 @@
+Version 1 of Trivial Extension by Andrew Plotkin begins here.
+
+A cow is a kind of animal. A cow can be purple.
+
+Trivial Extension ends here.
+
diff --git a/samples/Inform 7/story.ni b/samples/Inform 7/story.ni
new file mode 100644
index 00000000..f8873369
--- /dev/null
+++ b/samples/Inform 7/story.ni	
@@ -0,0 +1,12 @@
+"Test Case" by Andrew Plotkin.
+
+Include Trivial Extension by Andrew Plotkin.
+
+The Kitchen is a room.
+
+[This kitchen is modelled after the one in Zork, although it lacks the detail to establish this to the player.]
+
+A purple cow called Gelett is in the Kitchen.
+
+Instead of examining Gelett:
+	say "You'd rather see than be one."
diff --git a/samples/Isabelle/HelloWorld.thy b/samples/Isabelle/HelloWorld.thy
new file mode 100644
index 00000000..7c814dae
--- /dev/null
+++ b/samples/Isabelle/HelloWorld.thy
@@ -0,0 +1,46 @@
+theory HelloWorld
+imports Main
+begin
+
+section{*Playing around with Isabelle*}
+
+text{* creating a lemma with the name hello_world*}
+lemma hello_world: "True" by simp
+
+(*inspecting it*)
+thm hello_world
+
+text{* defining a string constant HelloWorld *}
+
+definition HelloWorld :: "string" where
+  "HelloWorld \<equiv> ''Hello World!''"
+
+(*reversing HelloWorld twice yilds HelloWorld again*)
+theorem "rev (rev HelloWorld) = HelloWorld"
+  by (fact List.rev_rev_ident)
+
+text{*now we delete the already proven List.rev_rev_ident lema and show it by hand*}
+declare List.rev_rev_ident[simp del]
+hide_fact List.rev_rev_ident
+
+(*It's trivial since we can just 'execute' it*)
+corollary "rev (rev HelloWorld) = HelloWorld"
+  apply(simp add: HelloWorld_def)
+  done
+
+text{*does it hold in general?*}
+theorem rev_rev_ident:"rev (rev l) = l"
+  proof(induction l)
+  case Nil thus ?case by simp
+  next
+  case (Cons l ls)
+    assume IH: "rev (rev ls) = ls"
+    have "rev (l#ls) = (rev ls) @ [l]" by simp
+    hence "rev (rev (l#ls)) = rev ((rev ls) @ [l])" by simp
+    also have "\<dots> = [l] @ rev (rev ls)" by simp
+    finally show "rev (rev (l#ls)) = l#ls" using IH by simp
+  qed
+
+corollary "\<forall>(l::string). rev (rev l) = l" by(fastforce intro: rev_rev_ident)
+
+end
diff --git a/samples/JSON5/example.json5 b/samples/JSON5/example.json5
new file mode 100644
index 00000000..95f12408
--- /dev/null
+++ b/samples/JSON5/example.json5
@@ -0,0 +1,29 @@
+/*
+ * The following is a contrived example, but it illustrates most of the features:
+ */
+
+{
+    foo: 'bar',
+    while: true,
+
+    this: 'is a \
+multi-line string',
+
+    // this is an inline comment
+    here: 'is another', // inline comment
+
+    /* this is a block comment
+       that continues on another line */
+
+    hex: 0xDEADbeef,
+    half: .5,
+    delta: +10,
+    to: Infinity,   // and beyond!
+
+    finally: 'a trailing comma',
+    oh: [
+        "we shouldn't forget",
+        'arrays can have',
+        'trailing commas too',
+    ],
+}
diff --git a/samples/JSON5/package.json5 b/samples/JSON5/package.json5
new file mode 100644
index 00000000..9e52ed24
--- /dev/null
+++ b/samples/JSON5/package.json5
@@ -0,0 +1,28 @@
+// This file is written in JSON5 syntax, naturally, but npm needs a regular
+// JSON file, so compile via `npm run build`. Be sure to keep both in sync!
+
+{
+    name: 'json5',
+    version: '0.2.0',
+    description: 'JSON for the ES5 era.',
+    keywords: ['json', 'es5'],
+    author: 'Aseem Kishore <aseem.kishore@gmail.com>',
+    contributors: [
+        'Max Nanasy <max.nanasy@gmail.com>',
+    ],
+    main: 'lib/json5.js',
+    bin: 'lib/cli.js',
+    dependencies: {},
+    devDependencies: {
+        mocha: '~1.0.3',
+    },
+    scripts: {
+        build: './lib/cli.js -c package.json5',
+        test: 'mocha --ui exports --reporter spec',
+    },
+    homepage: 'http://json5.org/',
+    repository: {
+        type: 'git',
+        url: 'https://github.com/aseemk/json5.git',
+    },
+}
diff --git a/samples/JSONLD/sample.jsonld b/samples/JSONLD/sample.jsonld
new file mode 100644
index 00000000..dbae017a
--- /dev/null
+++ b/samples/JSONLD/sample.jsonld
@@ -0,0 +1,30 @@
+{
+  "@context": {
+    "property": "http://example.com/vocab#property"
+  },
+  "@id": "../document-relative",
+  "@type": "#document-relative",
+  "property": {
+    "@context": {
+      "@base": "http://example.org/test/"
+    },
+    "@id": "../document-base-overwritten",
+    "@type": "#document-base-overwritten",
+    "property": [
+      {
+        "@context": null,
+        "@id": "../document-relative",
+        "@type": "#document-relative",
+        "property": "context completely reset, drops property"
+      },
+      {
+        "@context": {
+          "@base": null
+        },
+        "@id": "../document-relative",
+        "@type": "#document-relative",
+        "property": "only @base is cleared"
+      }
+    ]
+  }
+}
diff --git a/samples/JSONiq/detail.jq b/samples/JSONiq/detail.jq
new file mode 100644
index 00000000..9ae43f8b
--- /dev/null
+++ b/samples/JSONiq/detail.jq
@@ -0,0 +1,9 @@
+(: Query for returning one database entry :) 
+
+import module namespace req = "http://www.28msec.com/modules/http-request";
+import module namespace catalog = "http://guide.com/catalog";
+
+variable $id := (req:param-values("id"), "London")[1];
+variable $part := (req:param-values("part"), "main")[1];
+
+catalog:get-data-by-key($id, $part)
diff --git a/samples/JSONiq/query.jq b/samples/JSONiq/query.jq
new file mode 100644
index 00000000..d1abbaba
--- /dev/null
+++ b/samples/JSONiq/query.jq
@@ -0,0 +1,17 @@
+(: Query for searching the database for keywords :)
+
+import module namespace index = "http://guide.com/index";
+import module namespace catalog = "http://guide.com/catalog";
+
+import module namespace req = "http://www.28msec.com/modules/http-request";
+
+variable $phrase := (req:param-values("q"), "London")[1];
+variable $limit := integer((req:param-values("limit"), 5)[1]);
+
+[
+for $result at $idx in index:index-search($phrase)
+where $idx le $limit
+let $data := catalog:get-data-by-id($result.s, $result.p)
+return 
+    {| { score : $result.r } , $data |}  
+]
diff --git a/samples/JavaScript/intro.js.frag b/samples/JavaScript/intro.js.frag
new file mode 100644
index 00000000..a4e06b08
--- /dev/null
+++ b/samples/JavaScript/intro.js.frag
@@ -0,0 +1,7 @@
+(function(window, angular) {
+
+Array.prototype.last = function() {
+    return this[this.length-1];
+};
+
+var app = angular.module('ConwayGameOfLife', []);
diff --git a/samples/JavaScript/outro.js.frag b/samples/JavaScript/outro.js.frag
new file mode 100644
index 00000000..8634f6ed
--- /dev/null
+++ b/samples/JavaScript/outro.js.frag
@@ -0,0 +1,3 @@
+
+})(window, window.angular);
+
diff --git a/samples/Kit/demo.kit b/samples/Kit/demo.kit
new file mode 100644
index 00000000..7c948f16
--- /dev/null
+++ b/samples/Kit/demo.kit
@@ -0,0 +1,8 @@
+<!-- $pageTitle: The Kit Language -->
+
+<section>
+	<h1><!-- $pageTitle --></h1>
+	<p>
+		<!-- @include "loremipsum" -->
+	</p>
+</section>
\ No newline at end of file
diff --git a/samples/Latte/layout.latte b/samples/Latte/layout.latte
new file mode 100644
index 00000000..5e94975f
--- /dev/null
+++ b/samples/Latte/layout.latte
@@ -0,0 +1,59 @@
+{**
+ * @param string $basePath web base path
+ * @param string $robots tell robots how to index the content of a page (optional)
+ * @param array $flashes flash messages
+ *}
+<!DOCTYPE html>
+<html>
+<head>
+	<meta charset="utf-8">
+	<meta name="description" content="">
+	<meta name="author" content="">
+	<meta name="robots" content="{$robots}" n:ifset="$robots">
+	<meta http-equiv="X-UA-Compatible" content="IE=edge">
+	<meta name="viewport" content="width=device-width, initial-scale=1.0">
+
+	<title>{ifset $title}{$title} › {/ifset}Translation report</title>
+
+	<link rel="stylesheet" media="screen,projection,tv" href="{$cdnUrl}/css/style.css?v={$cssHash}">
+	<link rel="shortcut icon" href="{$cdnUrl}/favicon.png">
+	<!-- HTML5 shim and Respond.js IE8 support of HTML5 elements and media queries -->
+    <!--[if lt IE 9]>
+		<script src="https://oss.maxcdn.com/libs/html5shiv/3.7.0/html5shiv.js"></script>
+		<script src="https://oss.maxcdn.com/libs/respond.js/1.3.0/respond.min.js"></script>
+    <![endif]-->
+    <script n:syntax="off">
+		(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
+		(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
+		m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
+		})(window,document,'script','//www.google-analytics.com/analytics.js','ga');
+		ga('create', 'UA-33892654-4', 'khanovaskola.cz');
+		ga('send', 'pageview');
+    </script>
+	{block #head}{/block}
+</head>
+
+<body class="amara-guest history-empty">
+	<script> document.documentElement.className+=' js' </script>
+
+	{block #navbar}
+		{include _navbar.latte}
+	{/block}
+
+	<div class="container">
+		<div class="row">
+			<div class="col-md-8 col-md-offset-2" n:inner-foreach="$flashes as $flash">
+				{include _flash.latte, flash => $flash}
+			</div>
+		</div>
+
+		{include #content}
+	</div>
+
+	<footer>
+	</footer>
+
+	<script src="{$cdnUrl}/js/compiled.js?v={$jsHash}"></script>
+	{block #scripts}{/block}
+</body>
+</html>
diff --git a/samples/Latte/template.latte b/samples/Latte/template.latte
new file mode 100644
index 00000000..1718045a
--- /dev/null
+++ b/samples/Latte/template.latte
@@ -0,0 +1,243 @@
+{var $title => "⚐ {$new->title}"}
+{define author}
+	<a n:href="Author: authorId => $author->id" class="black">
+		<img src="{$author->avatar}" width="32" height="32" class="img-rounded">
+		<span class="{$class}">{$author->name|trim}</span>
+	</a>
+	<span data-toggle="tooltip" title="Total time {$author->shortName} translated on all videos.">
+		{$author->estimatedTimeTranslated|secondsToTime}{*
+	*}</span>{if $author->joined}, {/if}
+	{if $author->joined}joined {$author->joined|timeAgo}{/if}{*
+	*}{ifset $postfix}, {$postfix}{/ifset}
+{/define}
+{block #scripts}
+	<script src="{$amaraCallbackLink}"></script>
+{/block}
+{block #content}
+
+{if isset($old)}
+	<h1>Diffing revision #{$old->revision} and #{$new->revision}</h1>
+{else}
+	<h1>First revision</h1>
+{/if}
+
+{var $editor = $user->loggedIn && $new->language === 'cs'}
+{var $rev = $new->video->siteRevision}
+<div class="row">
+	<div class="col-md-7">
+		<p>
+			published <b>{$new->publishedAt|timeAgo}</b>{*
+			*}{ifset $old},
+				<span>
+					{$new->textChange * 100|number}&thinsp;% text change{*
+				*}</span>{*
+				*}{if $new->timeChange},
+					<span>
+						{$new->timeChange * 100|number}&thinsp;% timing change
+					</span>
+				{/if}
+			{/ifset}
+		</p>
+		{cache $new->id, expires => '+4 hours'}
+			<p>
+				{if isset($old) && $old->author->name !== $new->author->name}
+					{include author, author => $old->author, class => 'author-old'}
+					&mdash;
+					{include author, author => $new->author, class => 'author-new'}
+				{elseif isset($old)}
+					{include author, author => $new->author, class => 'author-new', postfix => 'authored both revisions'}
+				{else}
+					{include author, author => $new->author, class => 'author-new'}
+				{/if}
+			</p>
+		{/cache}
+
+		{var $threshold = 10}
+		{cache $new->id}
+			{var $done = $new->timeTranslated}
+			{var $outOf = $new->video->canonicalTimeTranslated}
+			{if $outOf}
+				<p n:if="$outOf > $done + $threshold" class="alert alert-warning">
+					Only {$done|time} translated out of {$outOf|time},
+					{(1-$done/$outOf) * 100|number}&thinsp;% ({$outOf - $done|time}) left
+				</p>
+				<p n:if="$outOf <= $done + $threshold" class="alert alert-success">
+					Seems complete: {$done|time} translated out of {$outOf|time}
+				</p>
+			{elseif $done}
+				<p n:if="$outOf <= $done + $threshold" class="alert alert-info">
+					Although {$done|time} is translated, there are no English subtitles for comparison.
+				</p>
+			{/if}
+		{/cache}
+
+		{if $editor}
+			{var $ksid = $new->video->siteId}
+			{if $ksid}
+				<a href="https://khanovaskola.cz/watch/default/?vid={$ksid}">
+					Video on khanovaskola.cz
+					{if $new->revision === $rev}
+						(on this revision)
+					{elseif $new->revision > $rev}
+						(on older revision #{$rev})
+					{else}
+						(on newer revision #{$rev})
+					{/if}
+				</a>
+			{/if}
+		{/if}
+
+		<h3 class="diff">{$diffs->title|noescape}</h3>
+		<div class="lead diff">{$diffs->description|noescape}</div>
+		<div class="diff subtitles">
+			<div n:foreach="$diffs->text as $line" class="line" data-context="{$line->context}">
+				{$line->text|noescape}&nbsp;
+			</div>
+			<div class="splitter template">
+				<span data-toggle="tooltip" data-placement="bottom" title="Expand">
+					<i class="fa fa-sort"></i> <i class="fa fa-ellipsis-h"></i>
+				</span>
+			</div>
+		</div>
+
+		{if $editor}
+			{if $new->approved}
+				<span class="text-success">
+					Revision has been approved{if $new->editor} by {$new->editor->name}{/if}.
+				</span>
+				<a n:href="amaraEdit, amaraId => $new->video->amaraId" n:block="editButton" class="btn btn-default">
+					<i class="fa fa-edit"></i>
+					Edit on Amara
+				</a>
+				<a n:href="khanAcademy" n:block="kaButton" class="btn btn-link">
+					on Khan Academy
+				</a>
+
+			{elseif $new->incomplete}
+				<span class="text-info">
+					Revision has been marked as incomplete by {if $new->editor}{$new->editor->name}{/if}.
+				</span>
+				{include editButton}
+				{include kaButton}
+
+			{* else $new->status === UNSET: *}
+			{elseif $new->video->siteId}
+				<div class="btn-group">
+					<a n:href="approve!" class="btn btn-default">
+						<i class="fa fa-thumbs-o-up"></i>
+						Approve (update kš)
+					</a>
+					<a n:href="markIncomplete!" class="btn btn-default">
+						<i class="fa fa-thumbs-o-down"></i>
+						Mark as incomplete
+					</a>
+					{include editButton}
+				</div>
+				{include kaButton}
+
+			{else}
+				<div class="btn-group">
+					<a n:href="redirectToAdd!" class="btn btn-default">
+						<i class="fa fa-plus-square-o"></i>
+						Approve (add to kš)
+					</a>
+					<a n:href="markIncomplete!" class="btn btn-default">
+						<i class="fa fa-thumbs-o-down"></i>
+						Mark as incomplete
+					</a>
+					{include editButton}
+				</div>
+				{include kaButton}
+				<div>
+					<h5>Filed under category:</h5>
+					{foreach $new->video->categories as $list}
+						&mdash; {$list|implode:' › '}{sep}<br>{/sep}
+					{/foreach}
+				</div>
+			{/if}
+		{/if}
+	</div>
+	<div class="col-md-5">
+		<h4>All revisions:</h4>
+		<table class="table table-condensed revisions">
+			{foreach $new->video->getRevisionsIn($new->language) as $revision}
+				<tr n:class="$revision->revision === $new->revision ? 'active'">
+					<td class="revision">
+						<a n:href="this, revId => $revision->id">#{$revision->revision}</a>
+					</td>
+					<td>
+						<a n:href="Author: authorId => $revision->author->id" class="black">
+							<img src="{$revision->author->avatar}" width="32" height="32" class="img-rounded">
+							{$revision->author->name}
+						</a>
+					</td>
+					<td>
+						<span class="secondary">
+							{$revision->publishedAt|timeAgo}
+						</span>
+					</td>
+					<td>
+						{* vars $outOf, $threshold already set *}
+						{default $outOf = $new->video->canonicalTimeTranslated}
+						{if $outOf} {* ignore if canonical time not set *}
+							{var $done = $revision->timeTranslated}
+							<span n:if="$outOf > $done + $threshold" class="text-warning"
+								data-toggle="tooltip" title="Percent of lines translated">
+								{$done/$outOf * 100|number}&thinsp;%
+							</span>
+							<span n:if="$outOf <= $done + $threshold" class="text-success">
+								~100&thinsp;%
+							</span>
+						{/if}
+					</td>
+					<td>
+						{if $revision->incomplete || $revision->approved}
+							{var $i = $revision->incomplete}
+							<span n:class="$i ? 'text-warning' : 'text-success'">
+								{if $i}incomplete{else}approved{/if}
+							</span>
+						{/if}
+					</td>
+					{if $user->loggedIn && $revision->comments->count()}
+						</tr>
+						<tr class="row-noborder">
+							<td colspan="99">
+								<table class="comments">
+									<tr n:foreach="$revision->comments as $comment">
+										<td class="col-comment-author">
+											<span class="secondary" data-toggle="tooltip" data-placement="left"
+												title="{$comment->createdAt|timeAgo}">
+												{$comment->user->name}:
+											</span>
+										</td>
+										<td>
+											<span>
+												{$comment->text}
+											</span>
+										</td>
+									</tr>
+								</table>
+							</td>
+					{/if}
+					{if $user->loggedIn && $new->id === $revision->id}
+						</tr>
+						<tr class="row-noborder">
+							<td colspan="99">
+								{form commentForm}
+									<div class="input-group comment-input">
+										{input text, class => "form-control", placeholder => "Comment this revision (only visible to other editors)"}
+										<span class="input-group-btn">
+											<button class="btn btn-default" n:name="save">
+												<i class="fa fa-share"></i>
+											</button>
+										</span>
+									</div>
+								{/form}
+							</td>
+					{/if}
+				</tr>
+			{/foreach}
+		</table>
+
+	</div>
+</div>
diff --git a/samples/Liquid/layout.liquid b/samples/Liquid/layout.liquid
new file mode 100644
index 00000000..7954c7ec
--- /dev/null
+++ b/samples/Liquid/layout.liquid
@@ -0,0 +1,104 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+
+<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
+<head>
+  <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
+  <title>{{shop.name}} - {{page_title}}</title>
+
+  {{ 'textile.css'  | global_asset_url | stylesheet_tag }}
+  {{ 'lightbox/v204/lightbox.css' | global_asset_url | stylesheet_tag }}
+
+  {{ 'prototype/1.6/prototype.js' | global_asset_url  | script_tag }}
+  {{ 'scriptaculous/1.8.2/scriptaculous.js' | global_asset_url  | script_tag }}
+  {{ 'lightbox/v204/lightbox.js'  | global_asset_url  | script_tag }}
+  {{ 'option_selection.js'        | shopify_asset_url | script_tag }}
+
+  {{ 'layout.css'   | asset_url | stylesheet_tag }}
+  {{ 'shop.js'      | asset_url | script_tag }}
+
+  {{ content_for_header }}
+</head>
+
+<body id="page-{{template}}">
+
+  <p class="hide"><a href="#rightsiders">Skip to navigation.</a></p>
+    <!-- mini cart -->
+        {% if cart.item_count > 0 %}
+      <div id="minicart" style="display:none;"><div id="minicart-inner">
+      <div id="minicart-items">
+      <h2>There {{ cart.item_count | pluralize: 'is', 'are' }} {{ cart.item_count }} {{ cart.item_count | pluralize: 'item', 'items' }} in <a href="/cart" title="View your cart">your cart</a>!</h2><h4 style="font-size: 16px; margin: 0 0 10px 0; padding: 0;">Your subtotal is {{ cart.total_price | money }}.</h4>
+        {% for item in cart.items %}
+        <div class="thumb">
+          <div class="prodimage"><a href="{{item.product.url}}" onMouseover="tooltip('{{ item.quantity }} x {{ item.title }} ({{ item.variant.title }})', 200)"; onMouseout="hidetooltip()"><img src="{{ item.product.featured_image | product_img_url: 'thumb' }}" /></a></div>
+        </div>
+        {% endfor %}
+        </div>
+       <br style="clear:both;" />
+      </div></div>
+        {% endif %}
+
+  <div id="container">
+    <div id="header">
+      <!-- Begin Header -->
+        <h1 id="logo"><a href="/" title="Go Home">{{shop.name}}</a></h1>
+      <div id="cartlinks">
+        {% if cart.item_count > 0 %}
+          <h2 id="cartcount"><a href="/cart" onMouseover="tooltip('There {{ cart.item_count | pluralize: 'is', 'are' }} {{ cart.item_count }} {{ cart.item_count | pluralize: 'item', 'items' }} in your cart!', 200)"; onMouseout="hidetooltip()">{{ cart.item_count }} {{ cart.item_count | pluralize: 'thing', 'things' }}!</a></h2>
+      <a href="/cart" id="minicartswitch" onclick="superSwitch(this, 'minicart', 'Close Mini Cart'); return false;" id="cartswitch">View Mini Cart ({{ cart.total_price | money }})</a>
+        {% endif %}
+      </div>
+      <!-- End Header -->
+
+    </div>
+  <hr />
+<div id="main">
+
+    <div id="content">
+    <div id="innercontent">
+      {{ content_for_layout }}
+      </div>
+    </div>
+
+  <hr />
+    <div id="rightsiders">
+
+      <ul class="rightlinks">
+        {% for link in linklists.main-menu.links %}
+           <li>{{ link.title | link_to: link.url }}</li>
+        {% endfor %}
+      </ul>
+
+        {% if tags %}
+        <ul class="rightlinks">
+          {% for tag in collection.tags %}
+            <li><span class="add-link">{{ '+' | link_to_add_tag: tag }}</span>{{ tag | highlight_active_tag | link_to_tag: tag }}</li>
+          {% endfor %}
+        </ul>
+        {% endif %}
+
+      <ul class="rightlinks">
+        {% for link in linklists.footer.links %}
+           <li>{{ link.title | link_to: link.url }}</li>
+        {% endfor %}
+      </ul>
+
+    </div>
+
+  <hr /><br style="clear:both;" />
+
+    <div id="footer">
+      <div class="footerinner">
+      All prices are in {{ shop.currency }}.
+      Powered by <a href="http://www.shopify.com" title="Shopify, Hosted E-Commerce">Shopify</a>.
+    </div>
+    </div>
+
+  </div>
+</div>
+
+<div id="tooltip"></div>
+<img id="pointer" src="{{ 'arrow2.gif' | asset_url }}" />
+
+</body>
+</html>
diff --git a/samples/Liquid/template.liquid b/samples/Liquid/template.liquid
new file mode 100644
index 00000000..5502c2e7
--- /dev/null
+++ b/samples/Liquid/template.liquid
@@ -0,0 +1,70 @@
+<h3>We have wonderful products!</h3>
+<ul id="products">
+  <div id="productpage">
+    <div id="productimages"><div id="productimages-top"><div id="productimages-bottom">
+      {% for image in product.images %}
+        {% if forloop.first %}
+          <a href="{{ image | product_img_url: 'large' }}" class="productimage" rel="lightbox">
+            <img src="{{ image | product_img_url: 'medium'}}" alt="{{product.title | escape }}" />
+          </a>
+        {% else %}
+          <a href="{{ image | product_img_url: 'large' }}" class="productimage-small" rel="lightbox">
+            <img src="{{ image | product_img_url: 'small'}}" alt="{{product.title | escape }}" />
+          </a>
+        {% endif %}
+      {% endfor %}
+    </div></div></div>
+
+    <h2>{{ product.title }}</h2>
+
+    <ul id="details" class="hlist">
+      <li>Vendor: {{ product.vendor | link_to_vendor }}</li>
+      <li>Type: {{ product.type | link_to_type }}</li>
+    </ul>
+
+    <small>{{ product.price_min | money }}{% if product.price_varies %} - {{ product.price_max | money }}{% endif %}</small>
+
+    <div id="variant-add">
+      <form action="/cart/add" method="post">
+
+        <select id="variant-select" name="id" class="product-info-options">
+          {% for variant in product.variants %}
+            <option value="{{ variant.id }}">{{ variant.title }} - {{ variant.price | money }}</option>
+          {% endfor %}
+        </select>
+
+        <div id="price-field" class="price"></div>
+
+      <div style="text-align:center;"><input type="image" name="add" value="Add to Cart" id="add" src="{{ 'addtocart.gif' | asset_url }}" /></div>
+      </form>
+    </div>
+
+    <div class="description textile">
+      {{ product.description }}
+    </div>
+  </div>
+
+  <script type="text/javascript">
+  <!--
+    // prototype callback for multi variants dropdown selector
+    var selectCallback = function(variant, selector) {
+      if (variant && variant.available == true) {
+        // selected a valid variant
+        $('add').removeClassName('disabled'); // remove unavailable class from add-to-cart button
+        $('add').disabled = false;           // reenable add-to-cart button
+        $('price-field').innerHTML = Shopify.formatMoney(variant.price, "{{shop.money_with_currency_format}}");  // update price field
+      } else {
+        // variant doesn't exist
+        $('add').addClassName('disabled');      // set add-to-cart button to unavailable class
+        $('add').disabled = true;              // disable add-to-cart button
+        $('price-field').innerHTML = (variant) ? "Sold Out" : "Unavailable"; // update price-field message
+      }
+    };
+
+    // initialize multi selector for product
+    Event.observe(document, 'dom:loaded', function() {
+      new Shopify.OptionSelectors("variant-select", { product: {{ product | json }}, onVariantSelected: selectCallback });
+    });
+  -->
+  </script>
+</ul>
diff --git a/samples/M/Comment.m b/samples/M/Comment.m
new file mode 100644
index 00000000..6ddd7653
--- /dev/null
+++ b/samples/M/Comment.m
@@ -0,0 +1,36 @@
+Comment ;
+  ; this is a comment block
+  ; comments always start with a semicolon
+  ; the next line, while not a comment, is a legal blank line
+  
+  ;whitespace alone is a valid line in a routine
+  ;** Comments can have any graphic character, but no "control"
+  ;** characters
+  
+  ;graphic characters such as: !@#$%^&*()_+=-{}[]|\:"?/>.<,
+  ;the space character is considered a graphic character, even 
+  ;though you can't see it.
+  ; ASCII characters whose numeric code is above 128 and below 32
+  ; are NOT allowed on a line in a routine.
+  ;; multiple semicolons are okay
+  ; a line that has a tag must have whitespace after the tag, bug
+  ; does not have to have a comment or a command on it
+Tag1  
+  ;
+  ;Tags can start with % or an uppercase or lowercase alphabetic
+  ; or can be a series of numeric characters
+%HELO ;
+ ;
+0123 ;
+  ;
+%987  ;
+  ; the most common label is uppercase alphabetic
+LABEL ;
+  ; 
+  ; Tags can be followed directly by an open parenthesis and a
+  ; formal list of variables, and a close parenthesis
+ANOTHER(X) ;
+  ;
+  ;Normally, a subroutine would be ended by a QUIT command, but we
+  ; are taking advantage of the rule that the END of routine is an
+  ; implicit QUIT
diff --git a/samples/MTML/categories_to_columns.mtml b/samples/MTML/categories_to_columns.mtml
new file mode 100644
index 00000000..a46c0674
--- /dev/null
+++ b/samples/MTML/categories_to_columns.mtml
@@ -0,0 +1,35 @@
+<$mt:Var name="num_cols" value="6"$>
+<$mt:Var name="index" value="0"$>
+<mt:Categories>
+  <$mt:Var name="index" op="++" setvar="index"$>
+  <mt:SetVarBlock name="categories{$index}">
+    <a href="<$mt:CategoryArchiveLink$>"><$mt:CategoryLabel remove_html="1"$></a>
+  </mt:SetVarBlock>
+</mt:Categories>
+<$mt:Var name="categories" function="count" setvar="cat_count"$>
+<$mt:Var name="cat_count" op="%" value="$num_cols" setvar="modulus"$>
+<mt:If name="modulus" gt="0">
+  <$mt:Var name="cat_count" op="-" value="$modulus" setvar="cat_count_minus_mod"$>
+  <$mt:Var name="cat_count_minus_mod" op="/" value="$num_cols" setvar="cats_per_col"$>
+  <$mt:Var name="cats_per_col" op="+" value="1" setvar="cats_per_col"$>
+<mt:Else>
+  <$mt:Var name="cat_count" op="/" value="$num_cols" setvar="cats_per_col"$>
+</mt:If>
+<mt:SetVarTemplate name="for_inner">
+  <$mt:Var name="index" op="++" setvar="index"$>
+  <mt:Unless name="index" gt="$cat_count">
+    <$mt:Var name="categories{$index}"$>
+  </mt:Unless>
+</mt:SetVarTemplate>
+
+<$mt:Var name="index" value="0"$>
+<$mt:Var name="col_num" value="1"$>
+<mt:For from="1" to="$num_cols">
+  <div class="col<$mt:Var name="col_num"$>">
+    <mt:For from="1" to="$cats_per_col">
+      <$mt:Var name="for_inner"$>
+    </mt:For>
+  </div>
+  <$mt:Var name="col_num" op="++" setvar="col_num"$>
+</mt:For>
+
diff --git a/samples/Mask/view.mask b/samples/Mask/view.mask
new file mode 100644
index 00000000..521273e6
--- /dev/null
+++ b/samples/Mask/view.mask
@@ -0,0 +1,61 @@
+
+// HTML Elements
+header {
+    
+    img .logo src='/images/~[currentLogo].png' alt=logo;
+    
+    h4 > 'Bar View'
+    
+    if (currentUser) {
+        
+        .account >
+            a href='/acount' >
+                'Hello, ~[currentUser.username]'
+    }
+}
+
+.view {
+    ul {
+       
+        // Iteration
+        for ((user, index) of users) {
+            
+            li.user data-id='~[user.id]' {
+                
+                // interpolation
+                .name > '~[ user.username ]'
+                
+                // expression
+                .count > '~[: user.level.toFixed(2) ]'
+                
+                // util
+                /* Localization sample
+                 * lastActivity: "Am {0:dd. MM} war der letzte Eintrag"
+                 */
+                .date > '~[ L: "lastActivity",  user.date]'
+            }
+        }
+    }
+    
+    // Component
+    :countdownComponent {
+        input type = text >
+            :dualbind value='number';
+            
+        button x-signal='click: countdownStart' > 'Start';
+        
+        h5 {
+            '~[bind: number]'
+            
+            :animation x-slot='countdownStart' {
+                @model > 'transition | scale(0) > scale(1) | 500ms'
+                @next  > 'background-color | red > blue | 2s linear'
+            }
+        }
+    }
+}
+
+footer > :bazCompo {
+    
+    'Component generated at ~[: $u.format($c.date, "HH-mm") ]'
+}
\ No newline at end of file
diff --git a/samples/Mathematica/Init.m b/samples/Mathematica/Init.m
new file mode 100644
index 00000000..720d6100
--- /dev/null
+++ b/samples/Mathematica/Init.m
@@ -0,0 +1,3 @@
+(* Mathematica Init File *)
+
+Get[ "Foobar`Foobar`"]
diff --git a/samples/Mathematica/MiscCalculations.nb b/samples/Mathematica/MiscCalculations.nb
new file mode 100644
index 00000000..5e34ac95
--- /dev/null
+++ b/samples/Mathematica/MiscCalculations.nb
@@ -0,0 +1,232 @@
+(* Content-type: application/vnd.wolfram.mathematica *)
+
+(*** Wolfram Notebook File ***)
+(* http://www.wolfram.com/nb *)
+
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diff --git a/samples/Mathematica/MiscCalculations2.nb b/samples/Mathematica/MiscCalculations2.nb
new file mode 100644
index 00000000..84960c53
--- /dev/null
+++ b/samples/Mathematica/MiscCalculations2.nb
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diff --git a/samples/Mathematica/PacletInfo.m b/samples/Mathematica/PacletInfo.m
new file mode 100644
index 00000000..489b58c7
--- /dev/null
+++ b/samples/Mathematica/PacletInfo.m
@@ -0,0 +1,17 @@
+(* Paclet Info File *)
+
+(* created 2014/02/07*)
+
+Paclet[
+    Name -> "Foobar",
+    Version -> "0.0.1",
+    MathematicaVersion -> "8+",
+    Description -> "Example of an automatically generated PacletInfo file.",
+    Creator -> "Chris Granade",
+    Extensions -> 
+        {
+            {"Documentation", Language -> "English", MainPage -> "Guides/Foobar"}
+        }
+]
+
+
diff --git a/samples/Mathematica/Predicates.m b/samples/Mathematica/Predicates.m
new file mode 100644
index 00000000..3c569691
--- /dev/null
+++ b/samples/Mathematica/Predicates.m
@@ -0,0 +1,150 @@
+(* ::Package:: *)
+
+BeginPackage["Predicates`"];
+
+
+(* ::Title:: *)
+(*Predicates*)
+
+
+(* ::Section::Closed:: *)
+(*Fuzzy Logic*)
+
+
+(* ::Subsection:: *)
+(*Documentation*)
+
+
+PossiblyTrueQ::usage="Returns True if the argument is not definitely False.";
+PossiblyFalseQ::usage="Returns True if the argument is not definitely True.";
+PossiblyNonzeroQ::usage="Returns True if and only if its argument is not definitely zero.";
+
+
+(* ::Subsection:: *)
+(*Implimentation*)
+
+
+Begin["`Private`"];
+
+
+PossiblyTrueQ[expr_]:=\[Not]TrueQ[\[Not]expr]
+
+
+PossiblyFalseQ[expr_]:=\[Not]TrueQ[expr]
+
+
+End[];
+
+
+(* ::Section::Closed:: *)
+(*Numbers and Lists*)
+
+
+(* ::Subsection:: *)
+(*Documentation*)
+
+
+AnyQ::usage="Given a predicate and a list, retuns True if and only if that predicate is True for at least one element of the list.";
+AnyElementQ::usage="Returns True if cond matches any element of L.";
+AllQ::usage="Given a predicate and a list, retuns True if and only if that predicate is True for all elements of the list.";
+AllElementQ::usage="Returns True if cond matches any element of L.";
+
+
+AnyNonzeroQ::usage="Returns True if L is a list such that at least one element is definitely not zero.";
+AnyPossiblyNonzeroQ::usage="Returns True if expr is a list such that at least one element is not definitely zero.";
+
+
+RealQ::usage="Returns True if and only if the argument is a real number";
+PositiveQ::usage="Returns True if and only if the argument is a positive real number";
+NonnegativeQ::usage="Returns True if and only if the argument is a non-negative real number";
+PositiveIntegerQ::usage="Returns True if and only if the argument is a positive integer";
+NonnegativeIntegerQ::usage="Returns True if and only if the argument is a non-negative integer";
+
+
+IntegerListQ::usage="Returns True if and only if the input is a list of integers.";
+PositiveIntegerListQ::usage="Returns True if and only if the input is a list of positive integers.";
+NonnegativeIntegerListQ::usage="Returns True if and only if the input is a list of non-negative integers.";
+IntegerOrListQ::usage="Returns True if and only if the input is a list of integers or an integer.";
+PositiveIntegerOrListQ::usage="Returns True if and only if the input is a list of positive integers or a positive integer.";
+NonnegativeIntegerOrListQ::usage="Returns True if and only if the input is a list of positive integers or a positive integer.";
+
+
+SymbolQ::usage="Returns True if argument is an unassigned symbol.";
+SymbolOrNumberQ::usage="Returns True if argument is a number of has head 'Symbol'";
+
+
+(* ::Subsection:: *)
+(*Implimentation*)
+
+
+Begin["`Private`"];
+
+
+AnyQ[cond_, L_] := Fold[Or, False, cond /@ L]
+
+
+AnyElementQ[cond_,L_]:=AnyQ[cond,Flatten[L]]
+
+
+AllQ[cond_, L_] := Fold[And, True, cond /@ L]
+
+
+AllElementQ[cond_, L_] := Fold[And, True, cond /@ L]
+
+
+AnyNonzeroQ[L_]:=AnyElementQ[#!=0&,L]
+
+
+PossiblyNonzeroQ[expr_]:=PossiblyTrueQ[expr!=0]
+
+
+AnyPossiblyNonzeroQ[expr_]:=AnyElementQ[PossiblyNonzeroQ,expr]
+
+
+RealQ[n_]:=TrueQ[Im[n]==0];
+
+
+PositiveQ[n_]:=Positive[n];
+
+
+PositiveIntegerQ[n_]:=PositiveQ[n]\[And]IntegerQ[n];
+
+
+NonnegativeQ[n_]:=TrueQ[RealQ[n]&&n>=0];
+
+
+NonnegativeIntegerQ[n_]:=NonnegativeQ[n]\[And]IntegerQ[n];
+
+
+IntegerListQ[input_]:=ListQ[input]&&Not[MemberQ[IntegerQ/@input,False]];
+
+
+IntegerOrListQ[input_]:=IntegerListQ[input]||IntegerQ[input];
+
+
+PositiveIntegerListQ[input_]:=IntegerListQ[input]&&Not[MemberQ[Positive[input],False]];
+
+
+PositiveIntegerOrListQ[input_]:=PositiveIntegerListQ[input]||PositiveIntegerQ[input];
+
+
+NonnegativeIntegerListQ[input_]:=IntegerListQ[input]&&Not[MemberQ[NonnegativeIntegerQ[input],False]];
+
+
+NonnegativeIntegerOrListQ[input_]:=NonnegativeIntegerListQ[input]||NonnegativeIntegerQ[input];
+
+
+SymbolQ[a_]:=Head[a]===Symbol;
+
+
+SymbolOrNumberQ[a_]:=NumericQ[a]||Head[a]===Symbol;
+
+
+End[];
+
+
+(* ::Section:: *)
+(*Epilogue*)
+
+
+EndPackage[];
diff --git a/samples/Mathematica/Problem12.m b/samples/Mathematica/Problem12.m
new file mode 100644
index 00000000..2e8e0ac7
--- /dev/null
+++ b/samples/Mathematica/Problem12.m
@@ -0,0 +1,8 @@
+(* ::Package:: *)
+
+(* Problem12.m *)
+(* Author: William Woodruff *)
+(* Problem: What is the value of the first triangle number to have over five hundred divisors? *)
+
+Do[If[Length[Divisors[Binomial[i + 1, 2]]] > 500, 
+  Print[Binomial[i + 1, 2]]; Break[]], {i, 1000000}]
diff --git a/samples/Mercury/code_info.m b/samples/Mercury/code_info.m
new file mode 100644
index 00000000..59f8eee4
--- /dev/null
+++ b/samples/Mercury/code_info.m
@@ -0,0 +1,4843 @@
+%---------------------------------------------------------------------------%
+% vim: ft=mercury ts=4 sw=4 et
+%---------------------------------------------------------------------------%
+% Copyright (C) 1994-2012 The University of Melbourne.
+% This file may only be copied under the terms of the GNU General
+% Public License - see the file COPYING in the Mercury distribution.
+%---------------------------------------------------------------------------%
+%
+% File: code_info.m.
+% Main authors: conway, zs.
+%
+% This file defines the code_info type and various operations on it.
+% The code_info structure is the 'state' of the code generator.
+%
+% This file is organized into ten submodules:
+%
+%   - the code_info structure and its access predicates
+%   - simple wrappers around access predicates
+%   - handling branched control structures
+%   - handling failure continuations
+%   - handling liveness issues
+%   - saving and restoring heap pointers, trail tickets etc
+%   - interfacing to var_locn
+%   - managing the info required by garbage collection and value numbering
+%   - managing stack slots
+%   - support for debugging the code generator itself.
+%
+%---------------------------------------------------------------------------%
+
+:- module ll_backend.code_info.
+:- interface.
+
+:- import_module check_hlds.type_util.
+:- import_module hlds.code_model.
+:- import_module hlds.hlds_data.
+:- import_module hlds.hlds_goal.
+:- import_module hlds.hlds_llds.
+:- import_module hlds.hlds_module.
+:- import_module hlds.hlds_pred.
+:- import_module hlds.instmap.
+:- import_module libs.globals.
+:- import_module ll_backend.continuation_info.
+:- import_module ll_backend.global_data.
+:- import_module ll_backend.layout.
+:- import_module ll_backend.llds.
+:- import_module ll_backend.trace_gen.
+:- import_module mdbcomp.prim_data.
+:- import_module mdbcomp.goal_path.
+:- import_module parse_tree.prog_data.
+:- import_module parse_tree.set_of_var.
+
+:- import_module assoc_list.
+:- import_module bool.
+:- import_module counter.
+:- import_module io.
+:- import_module list.
+:- import_module map.
+:- import_module maybe.
+:- import_module set.
+:- import_module set_tree234.
+:- import_module term.
+
+%----------------------------------------------------------------------------%
+%----------------------------------------------------------------------------%
+
+:- implementation.
+
+:- import_module backend_libs.builtin_ops.
+:- import_module backend_libs.proc_label.
+:- import_module hlds.arg_info.
+:- import_module hlds.hlds_desc.
+:- import_module hlds.hlds_rtti.
+:- import_module libs.options.
+:- import_module libs.trace_params.
+:- import_module ll_backend.code_util.
+:- import_module ll_backend.opt_debug.
+:- import_module ll_backend.var_locn.
+:- import_module parse_tree.builtin_lib_types.
+:- import_module parse_tree.prog_type.
+:- import_module parse_tree.mercury_to_mercury.
+
+:- import_module cord.
+:- import_module int.
+:- import_module pair.
+:- import_module require.
+:- import_module set.
+:- import_module stack.
+:- import_module string.
+:- import_module varset.
+
+%---------------------------------------------------------------------------%
+
+    % Submodule for the code_info type and its access predicates.
+    %
+    % This submodule has the following components:
+    %
+    %   declarations for exported access predicates
+    %   declarations for non-exported access predicates
+    %   the definition of the type and the init predicate
+    %   the definition of the get access predicates
+    %   the definition of the set access predicates
+    %
+    % Please keep the order of mention of the various fields
+    % consistent in each of these five components.
+
+:- interface.
+
+:- type code_info.
+
+    % Create a new code_info structure. Also return the
+    % outermost resumption point, and info about the non-fixed
+    % stack slots used for tracing purposes.
+    %
+:- pred code_info_init(bool::in, globals::in, pred_id::in, proc_id::in,
+    pred_info::in, proc_info::in, abs_follow_vars::in, module_info::in,
+    static_cell_info::in, const_struct_map::in, resume_point_info::out,
+    trace_slot_info::out, maybe(containing_goal_map)::in,
+    list(string)::in, int::in, code_info::out) is det.
+
+    % Get the globals table.
+    %
+:- pred get_globals(code_info::in, globals::out) is det.
+
+    % Get the exprn_opts.
+    %
+:- pred get_exprn_opts(code_info::in, exprn_opts::out) is det.
+
+    % Get the HLDS of the entire module.
+    %
+:- pred get_module_info(code_info::in, module_info::out) is det.
+
+    % Get the id of the predicate we are generating code for.
+    %
+:- pred get_pred_id(code_info::in, pred_id::out) is det.
+
+    % Get the id of the procedure we are generating code for.
+    %
+:- pred get_proc_id(code_info::in, proc_id::out) is det.
+
+    % Get the HLDS of the predicate containing the procedure
+    % we are generating code for.
+    %
+:- pred get_pred_info(code_info::in, pred_info::out) is det.
+
+    % Get the HLDS of the procedure we are generating code for.
+    %
+:- pred get_proc_info(code_info::in, proc_info::out) is det.
+
+    % Get the variables for the current procedure.
+    %
+:- pred get_varset(code_info::in, prog_varset::out) is det.
+
+:- func get_var_types(code_info) = vartypes.
+
+:- pred get_maybe_trace_info(code_info::in, maybe(trace_info)::out) is det.
+
+:- pred get_emit_trail_ops(code_info::in, add_trail_ops::out) is det.
+
+:- pred get_emit_region_ops(code_info::in, add_region_ops::out) is det.
+
+    % Get the set of currently forward-live variables.
+    %
+:- pred get_forward_live_vars(code_info::in, set_of_progvar::out) is det.
+
+    % Set the set of currently forward-live variables.
+    %
+:- pred set_forward_live_vars(set_of_progvar::in,
+    code_info::in, code_info::out) is det.
+
+    % Get the table mapping variables to the current
+    % instantiation states.
+    %
+:- pred get_instmap(code_info::in, instmap::out) is det.
+
+    % Set the table mapping variables to the current
+    % instantiation states.
+    %
+:- pred set_instmap(instmap::in, code_info::in, code_info::out) is det.
+
+    % Get the current nesting depth for parallel conjunctions.
+    %
+:- pred get_par_conj_depth(code_info::in, int::out) is det.
+
+    % Set the current nesting depth for parallel conjunctions.
+    %
+:- pred set_par_conj_depth(int::in, code_info::in, code_info::out) is det.
+
+    % The number of the last local label allocated.
+    %
+:- pred get_label_counter(code_info::in, counter::out) is det.
+
+    % Get the flag that indicates whether succip is used or not.
+    %
+:- pred get_succip_used(code_info::in, bool::out) is det.
+
+    % Get the label layout information created by tracing
+    % during code generation.
+    %
+:- pred get_layout_info(code_info::in, proc_label_layout_info::out) is det.
+
+:- pred get_proc_trace_events(code_info::in, bool::out) is det.
+
+:- pred set_proc_trace_events(bool::in, code_info::in, code_info::out) is det.
+
+    % Get the global static data structures that have
+    % been created during code generation for closure layouts.
+    %
+:- pred get_closure_layouts(code_info::in, list(closure_proc_id_data)::out)
+    is det.
+
+:- pred get_max_reg_in_use_at_trace(code_info::in, int::out, int::out) is det.
+
+:- pred set_max_reg_in_use_at_trace(int::in, int::in,
+    code_info::in, code_info::out) is det.
+
+    % Get the flag which is true iff the procedure has so far
+    % emitted code that creates a temporary nondet stack frame.
+    %
+:- pred get_created_temp_frame(code_info::in, bool::out) is det.
+
+:- pred get_static_cell_info(code_info::in, static_cell_info::out) is det.
+
+:- pred set_static_cell_info(static_cell_info::in,
+    code_info::in, code_info::out) is det.
+
+:- pred get_alloc_sites(code_info::in, set_tree234(alloc_site_info)::out)
+    is det.
+
+:- pred set_alloc_sites(set_tree234(alloc_site_info)::in,
+    code_info::in, code_info::out) is det.
+
+:- pred get_used_env_vars(code_info::in, set(string)::out) is det.
+
+:- pred set_used_env_vars(set(string)::in, code_info::in, code_info::out)
+    is det.
+
+:- pred get_opt_trail_ops(code_info::in, bool::out) is det.
+
+:- pred get_opt_region_ops(code_info::in, bool::out) is det.
+
+:- pred get_auto_comments(code_info::in, bool::out) is det.
+
+:- pred get_lcmc_null(code_info::in, bool::out) is det.
+
+:- pred get_containing_goal_map(code_info::in, maybe(containing_goal_map)::out)
+    is det.
+
+:- pred get_containing_goal_map_det(code_info::in, containing_goal_map::out)
+    is det.
+
+:- pred get_const_struct_map(code_info::in, const_struct_map::out) is det.
+
+:- pred add_out_of_line_code(llds_code::in, code_info::in, code_info::out)
+    is det.
+
+:- pred get_out_of_line_code(code_info::in, llds_code::out) is det.
+
+%---------------------------------------------------------------------------%
+
+:- implementation.
+
+:- pred get_var_slot_count(code_info::in, int::out) is det.
+
+:- pred set_maybe_trace_info(maybe(trace_info)::in,
+    code_info::in, code_info::out) is det.
+
+:- pred get_opt_no_return_calls(code_info::in, bool::out) is det.
+
+:- pred get_zombies(code_info::in, set_of_progvar::out) is det.
+
+:- pred set_zombies(set_of_progvar::in, code_info::in, code_info::out) is det.
+
+:- pred get_var_locn_info(code_info::in, var_locn_info::out) is det.
+
+:- pred set_var_locn_info(var_locn_info::in,
+    code_info::in, code_info::out) is det.
+
+:- pred get_temps_in_use(code_info::in, set(lval)::out) is det.
+
+:- pred set_temps_in_use(set(lval)::in, code_info::in, code_info::out) is det.
+
+:- pred get_fail_info(code_info::in, fail_info::out) is det.
+
+:- pred set_fail_info(fail_info::in, code_info::in, code_info::out) is det.
+
+:- pred set_label_counter(counter::in, code_info::in, code_info::out) is det.
+
+:- pred set_succip_used(bool::in, code_info::in, code_info::out) is det.
+
+:- pred set_layout_info(proc_label_layout_info::in,
+    code_info::in, code_info::out) is det.
+
+:- pred get_max_temp_slot_count(code_info::in, int::out) is det.
+
+:- pred set_max_temp_slot_count(int::in, code_info::in, code_info::out) is det.
+
+:- pred get_temp_content_map(code_info::in,
+    map(lval, slot_contents)::out) is det.
+
+:- pred set_temp_content_map(map(lval, slot_contents)::in,
+    code_info::in, code_info::out) is det.
+
+:- pred get_persistent_temps(code_info::in, set(lval)::out) is det.
+
+:- pred set_persistent_temps(set(lval)::in,
+    code_info::in, code_info::out) is det.
+
+:- pred set_closure_layouts(list(closure_proc_id_data)::in,
+    code_info::in, code_info::out) is det.
+
+:- pred get_closure_seq_counter(code_info::in, counter::out) is det.
+
+:- pred set_closure_seq_counter(counter::in,
+    code_info::in, code_info::out) is det.
+
+:- pred set_created_temp_frame(bool::in, code_info::in, code_info::out) is det.
+
+%---------------------------------------------------------------------------%
+
+    % The code_info structure has three groups of fields.
+    %
+    % Some fields are static; they are set when the code_info structure
+    % is initialized, and never changed afterwards.
+    %
+    % Some fields record information about the state of the code generator
+    % at a particular location in the HLDS code of the current procedure.
+    % At the start of the branched control structure, the code generator
+    % remembers the values of these fields, and starts generating code
+    % for each branch from the same location-dependent state.
+    %
+    % Some fields record persistent information that does not depend
+    % on a code location. Updates to these fields must remain effective
+    % even when the code generator resets its location-dependent state.
+
+:- type code_info
+    --->    code_info(
+                code_info_static        :: code_info_static,
+                code_info_loc_dep       :: code_info_loc_dep,
+                code_info_persistent    :: code_info_persistent
+            ).
+
+:- type code_info_static
+    --->    code_info_static(
+                % For the code generation options.
+                cis_globals             :: globals,
+                cis_exprn_opts          :: exprn_opts,
+
+                % The module_info structure - you just never know
+                % when you might need it.
+                cis_module_info         :: module_info,
+
+                % The id of the current predicate.
+                cis_pred_id             :: pred_id,
+
+                % The id of the current procedure.
+                cis_proc_id             :: proc_id,
+
+                % The pred_info for the predicate containing this procedure.
+                cis_pred_info           :: pred_info,
+
+                % The proc_info for this procedure.
+                cis_proc_info           :: proc_info,
+
+                % The proc_label for this procedure.
+                cis_proc_label          :: proc_label,
+
+                % The variables in this procedure.
+                cis_varset              :: prog_varset,
+
+                % The number of stack slots allocated. for storing variables.
+                % (Some extra stack slots are used for saving and restoring
+                % registers.)
+                cis_var_slot_count      :: int,
+
+                % Information about which stack slots the call sequence number
+                % and depth are stored in, provided tracing is switched on.
+                cis_maybe_trace_info    :: maybe(trace_info),
+
+                % Should we optimize calls that cannot return?
+                cis_opt_no_resume_calls :: bool,
+
+                % Should we emit trail operations?
+                cis_emit_trail_ops      :: add_trail_ops,
+
+                % Should we try to avoid generating trail operations?
+                cis_opt_trail_ops       :: bool,
+
+                % Should we emit region operations?
+                cis_emit_region_ops     :: add_region_ops,
+
+                % Should we try to avoid generating region operations?
+                cis_opt_region_ops      :: bool,
+
+                % The setting of --auto-comments.
+                cis_auto_comments       :: bool,
+
+                % The setting of --optimize-constructor-last-call-null.
+                cis_lcmc_null           :: bool,
+
+                cis_containing_goal_map :: maybe(containing_goal_map),
+
+                % Maps the number of an entry in the module's const_struct_db
+                % to its rval.
+                cis_const_struct_map    :: const_struct_map
+            ).
+
+:- type code_info_loc_dep
+    --->    code_info_loc_dep(
+                % Variables that are forward live after this goal.
+                cild_forward_live_vars  :: set_of_progvar,
+
+                % Current insts of the live variables.
+                cild_instmap            :: instmap,
+
+                % Zombie variables; variables that are not forward live
+                % but which are protected by an enclosing resume point.
+                cild_zombies            :: set_of_progvar,
+
+                % A map storing the information about the status of each known
+                % variable. (Known vars = forward live vars + zombies.)
+                cild_var_locn_info      :: var_locn_info,
+
+                % The set of temporary locations currently in use. These lvals
+                % must be all be keys in the map of temporary locations ever
+                % used, which is one of the persistent fields below. Any keys
+                % in that map which are not in this set are free for reuse.
+                cild_temps_in_use       :: set(lval),
+
+                % Information about how to manage failures.
+                cild_fail_info          :: fail_info,
+
+                % How deep in a nested parallel conjunction we are.
+                % This is zero at the beginning of a procedure and
+                % is incremented as we enter parallel conjunctions.
+                cild_par_conj_depth     :: int
+            ).
+
+:- type code_info_persistent
+    --->    code_info_persistent(
+                % Counter for the local labels used by this procedure.
+                cip_label_num_src           :: counter,
+
+                % do we need to store succip?
+                cip_store_succip            :: bool,
+
+                % Information on which values are live and where at which
+                % labels, for tracing and/or accurate gc.
+                cip_label_info              :: proc_label_layout_info,
+
+                % Did the procedure have any trace events?
+                cip_proc_trace_events       :: bool,
+
+                % The maximum number of extra temporary stackslots that
+                % have been used during the procedure.
+                cip_stackslot_max           :: int,
+
+                % The temporary locations that have ever been used on the
+                % stack, and what they contain. Once we have used a stack slot
+                % to store e.g. a ticket, we never reuse that slot to hold
+                % something else, e.g. a saved hp. This policy prevents us
+                % from making such conflicting choices in parallel branches,
+                % which would make it impossible to describe to gc what the
+                % slot contains after the end of the branched control
+                % structure.
+                cip_temp_contents           :: map(lval, slot_contents),
+
+                % Stack slot locations that should not be released even when
+                % the code generator resets its location-dependent state.
+                cip_persistent_temps        :: set(lval),
+
+                cip_closure_layout_seq      :: counter,
+
+                % Closure layout structures generated by this procedure.
+                cip_closure_layouts         :: list(closure_proc_id_data),
+
+                % At each call to MR_trace, we compute the highest rN and fN
+                % registers that contain useful values. These slot contain the
+                % maximum of these highest values. Therefore at all calls to
+                % MR_trace in the procedure, we need only save the registers
+                % whose numbers are equal to or smaller than this field.
+                % This slot contains -1 if tracing is not enabled.
+                cip_max_reg_r_used          :: int,
+                cip_max_reg_f_used          :: int,
+
+                % True iff the procedure has created one or more temporary
+                % nondet frames.
+                cip_created_temp_frame      :: bool,
+
+                cip_static_cell_info        :: static_cell_info,
+
+                cip_alloc_sites             :: set_tree234(alloc_site_info),
+
+                cip_used_env_vars           :: set(string),
+
+                % A counter and table for allocating and maintaining slots
+                % where string IDs will be placed at runtime for threadscope
+                % profiling.  The actual string IDs are allocated at runtime
+                % and their IDs are placed in an array slot which can be
+                % referred to statically.
+                cip_ts_string_table_size    :: int,
+                cip_ts_rev_string_table     :: list(string),
+
+                % Code that is part of this procedure, but that can be placed
+                % after the procedure without a cache penalty.  For example,
+                % code that is spawned off by loop control is placed here.
+                cip_out_of_line_code        :: llds_code
+            ).
+
+%---------------------------------------------------------------------------%
+
+code_info_init(SaveSuccip, Globals, PredId, ProcId, PredInfo, ProcInfo,
+        FollowVars, ModuleInfo, StaticCellInfo, ConstStructMap, ResumePoint,
+        TraceSlotInfo, MaybeContainingGoalMap,
+        TSRevStringTable, TSStringTableSize, CodeInfo) :-
+    ProcLabel = make_proc_label(ModuleInfo, PredId, ProcId),
+    proc_info_get_initial_instmap(ProcInfo, ModuleInfo, InstMap),
+    proc_info_get_liveness_info(ProcInfo, Liveness),
+    CodeModel = proc_info_interface_code_model(ProcInfo),
+    build_input_arg_list(ProcInfo, ArgList),
+    proc_info_get_varset(ProcInfo, VarSet),
+    proc_info_get_vartypes(ProcInfo, VarTypes),
+    proc_info_get_stack_slots(ProcInfo, StackSlots),
+    ExprnOpts = init_exprn_opts(Globals),
+    globals.lookup_bool_option(Globals, use_float_registers, UseFloatRegs),
+    (
+        UseFloatRegs = yes,
+        FloatRegType = reg_f
+    ;
+        UseFloatRegs = no,
+        FloatRegType = reg_r
+    ),
+    globals.get_trace_level(Globals, TraceLevel),
+    (
+        eff_trace_level_is_none(ModuleInfo, PredInfo, ProcInfo, TraceLevel)
+            = no
+    ->
+        trace_fail_vars(ModuleInfo, ProcInfo, FailVars),
+        MaybeFailVars = yes(FailVars),
+        set_of_var.union(Liveness, FailVars, EffLiveness)
+    ;
+        MaybeFailVars = no,
+        EffLiveness = Liveness
+    ),
+    init_var_locn_state(ArgList, EffLiveness, VarSet, VarTypes, FloatRegType,
+        StackSlots, FollowVars, VarLocnInfo),
+    stack.init(ResumePoints),
+    globals.lookup_bool_option(Globals, allow_hijacks, AllowHijack),
+    (
+        AllowHijack = yes,
+        Hijack = allowed
+    ;
+        AllowHijack = no,
+        Hijack = not_allowed
+    ),
+    DummyFailInfo = fail_info(ResumePoints, resume_point_unknown,
+        may_be_different, not_inside_non_condition, Hijack),
+    map.init(TempContentMap),
+    set.init(PersistentTemps),
+    set.init(TempsInUse),
+    Zombies = set_of_var.init,
+    map.init(LayoutMap),
+    max_var_slot(StackSlots, VarSlotMax),
+    trace_reserved_slots(ModuleInfo, PredInfo, ProcInfo, Globals,
+        FixedSlots, _),
+    int.max(VarSlotMax, FixedSlots, SlotMax),
+    globals.lookup_bool_option(Globals, opt_no_return_calls,
+        OptNoReturnCalls),
+    globals.lookup_bool_option(Globals, use_trail, UseTrail),
+    globals.lookup_bool_option(Globals, disable_trail_ops, DisableTrailOps),
+    (
+        UseTrail = yes,
+        DisableTrailOps = no
+    ->
+        EmitTrailOps = add_trail_ops
+    ;
+        EmitTrailOps = do_not_add_trail_ops
+    ),
+    globals.lookup_bool_option(Globals, optimize_trail_usage, OptTrailOps),
+    globals.lookup_bool_option(Globals, optimize_region_ops, OptRegionOps),
+    globals.lookup_bool_option(Globals, region_analysis, UseRegions),
+    (
+        UseRegions = yes,
+        EmitRegionOps = add_region_ops
+    ;
+        UseRegions = no,
+        EmitRegionOps = do_not_add_region_ops
+    ),
+    globals.lookup_bool_option(Globals, auto_comments, AutoComments),
+    globals.lookup_bool_option(Globals, optimize_constructor_last_call_null,
+        LCMCNull),
+    CodeInfo0 = code_info(
+        code_info_static(
+            Globals,
+            ExprnOpts,
+            ModuleInfo,
+            PredId,
+            ProcId,
+            PredInfo,
+            ProcInfo,
+            ProcLabel,
+            VarSet,
+            SlotMax,
+            no,
+            OptNoReturnCalls,
+            EmitTrailOps,
+            OptTrailOps,
+            EmitRegionOps,
+            OptRegionOps,
+            AutoComments,
+            LCMCNull,
+            MaybeContainingGoalMap,
+            ConstStructMap
+        ),
+        code_info_loc_dep(
+            Liveness,
+            InstMap,
+            Zombies,
+            VarLocnInfo,
+            TempsInUse,
+            DummyFailInfo,  % init_fail_info will override this dummy value
+            0               % nested parallel conjunction depth
+        ),
+        code_info_persistent(
+            counter.init(1),
+            SaveSuccip,
+            LayoutMap,
+            no,
+            0,
+            TempContentMap,
+            PersistentTemps,
+            counter.init(1),
+            [],
+            -1,
+            -1,
+            no,
+            StaticCellInfo,
+            set_tree234.init,
+            set.init,
+            TSStringTableSize,
+            TSRevStringTable,
+            cord.empty
+        )
+    ),
+    init_maybe_trace_info(TraceLevel, Globals, ModuleInfo,
+        PredInfo, ProcInfo, TraceSlotInfo, CodeInfo0, CodeInfo1),
+    init_fail_info(CodeModel, MaybeFailVars, ResumePoint,
+        CodeInfo1, CodeInfo).
+
+:- func init_exprn_opts(globals) = exprn_opts.
+
+init_exprn_opts(Globals) = ExprnOpts :-
+    globals.lookup_bool_option(Globals, gcc_non_local_gotos, OptNLG),
+    (
+        OptNLG = yes,
+        NLG = have_non_local_gotos
+    ;
+        OptNLG = no,
+        NLG = do_not_have_non_local_gotos
+    ),
+    globals.lookup_bool_option(Globals, asm_labels, OptASM),
+    (
+        OptASM = yes,
+        ASM = have_asm_labels
+    ;
+        OptASM = no,
+        ASM = do_not_have_asm_labels
+    ),
+    globals.lookup_bool_option(Globals, static_ground_cells, OptSGCell),
+    (
+        OptSGCell = yes,
+        SGCell = have_static_ground_cells
+    ;
+        OptSGCell = no,
+        SGCell = do_not_have_static_ground_cells
+    ),
+    globals.lookup_bool_option(Globals, unboxed_float, OptUBF),
+    (
+        OptUBF = yes,
+        UBF = have_unboxed_floats
+    ;
+        OptUBF = no,
+        UBF = do_not_have_unboxed_floats
+    ),
+    globals.lookup_bool_option(Globals, use_float_registers, OptFloatRegs),
+    (
+        OptFloatRegs = yes,
+        UseFloatRegs = use_float_registers
+    ;
+        OptFloatRegs = no,
+        UseFloatRegs = do_not_use_float_registers
+    ),
+    globals.lookup_bool_option(Globals, static_ground_floats, OptSGFloat),
+    (
+        OptSGFloat = yes,
+        SGFloat = have_static_ground_floats
+    ;
+        OptSGFloat = no,
+        SGFloat = do_not_have_static_ground_floats
+    ),
+    globals.lookup_bool_option(Globals, static_code_addresses,
+        OptStaticCodeAddr),
+    (
+        OptStaticCodeAddr = yes,
+        StaticCodeAddrs = have_static_code_addresses
+    ;
+        OptStaticCodeAddr = no,
+        StaticCodeAddrs = do_not_have_static_code_addresses
+    ),
+    ExprnOpts = exprn_opts(NLG, ASM, UBF, UseFloatRegs, SGCell, SGFloat,
+        StaticCodeAddrs).
+
+:- pred init_maybe_trace_info(trace_level::in, globals::in,
+    module_info::in, pred_info::in, proc_info::in, trace_slot_info::out,
+    code_info::in, code_info::out) is det.
+
+init_maybe_trace_info(TraceLevel, Globals, ModuleInfo, PredInfo,
+        ProcInfo, TraceSlotInfo, !CI) :-
+    (
+        eff_trace_level_is_none(ModuleInfo, PredInfo, ProcInfo, TraceLevel)
+            = no
+    ->
+        proc_info_get_has_tail_call_events(ProcInfo, HasTailCallEvents),
+        (
+            HasTailCallEvents = tail_call_events,
+            get_next_label(TailRecLabel, !CI),
+            MaybeTailRecLabel = yes(TailRecLabel)
+        ;
+            HasTailCallEvents = no_tail_call_events,
+            MaybeTailRecLabel = no
+        ),
+        trace_setup(ModuleInfo, PredInfo, ProcInfo, Globals, MaybeTailRecLabel,
+            TraceSlotInfo, TraceInfo, !CI),
+        set_maybe_trace_info(yes(TraceInfo), !CI)
+    ;
+        TraceSlotInfo = trace_slot_info(no, no, no, no, no, no)
+    ).
+
+%---------------------------------------------------------------------------%
+
+get_globals(CI, CI ^ code_info_static ^ cis_globals).
+get_module_info(CI, CI ^ code_info_static ^ cis_module_info).
+get_exprn_opts(CI, CI ^ code_info_static ^ cis_exprn_opts).
+get_pred_id(CI, CI ^ code_info_static ^ cis_pred_id).
+get_proc_id(CI, CI ^ code_info_static ^ cis_proc_id).
+get_pred_info(CI, CI ^ code_info_static ^ cis_pred_info).
+get_proc_info(CI, CI ^ code_info_static ^ cis_proc_info).
+get_varset(CI, CI ^ code_info_static ^ cis_varset).
+get_var_slot_count(CI, CI ^ code_info_static ^ cis_var_slot_count).
+get_maybe_trace_info(CI, CI ^ code_info_static ^ cis_maybe_trace_info).
+get_opt_no_return_calls(CI, CI ^ code_info_static ^ cis_opt_no_resume_calls).
+get_emit_trail_ops(CI, CI ^ code_info_static ^ cis_emit_trail_ops).
+get_opt_trail_ops(CI, CI ^ code_info_static ^ cis_opt_trail_ops).
+get_emit_region_ops(CI, CI ^ code_info_static ^ cis_emit_region_ops).
+get_opt_region_ops(CI, CI ^ code_info_static ^ cis_opt_region_ops).
+get_auto_comments(CI, CI ^ code_info_static ^ cis_auto_comments).
+get_lcmc_null(CI, CI ^ code_info_static ^ cis_lcmc_null).
+get_containing_goal_map(CI, CI ^ code_info_static ^ cis_containing_goal_map).
+get_const_struct_map(CI, CI ^ code_info_static ^ cis_const_struct_map).
+get_forward_live_vars(CI, CI ^ code_info_loc_dep ^ cild_forward_live_vars).
+get_instmap(CI, CI ^ code_info_loc_dep ^ cild_instmap).
+get_zombies(CI, CI ^ code_info_loc_dep ^ cild_zombies).
+get_var_locn_info(CI, CI ^ code_info_loc_dep ^ cild_var_locn_info).
+get_temps_in_use(CI, CI ^ code_info_loc_dep ^ cild_temps_in_use).
+get_fail_info(CI, CI ^ code_info_loc_dep ^ cild_fail_info).
+get_par_conj_depth(CI, CI ^ code_info_loc_dep ^ cild_par_conj_depth).
+get_label_counter(CI, CI ^ code_info_persistent ^ cip_label_num_src).
+get_succip_used(CI, CI ^ code_info_persistent ^ cip_store_succip).
+get_layout_info(CI, CI ^ code_info_persistent ^ cip_label_info).
+get_proc_trace_events(CI, CI ^ code_info_persistent ^ cip_proc_trace_events).
+get_max_temp_slot_count(CI, CI ^ code_info_persistent ^ cip_stackslot_max).
+get_temp_content_map(CI, CI ^ code_info_persistent ^ cip_temp_contents).
+get_persistent_temps(CI, CI ^ code_info_persistent ^ cip_persistent_temps).
+get_closure_seq_counter(CI,
+    CI ^ code_info_persistent ^ cip_closure_layout_seq).
+get_closure_layouts(CI, CI ^ code_info_persistent ^ cip_closure_layouts).
+get_max_reg_in_use_at_trace(CI, MaxRegR, MaxRegF) :-
+    MaxRegR = CI ^ code_info_persistent ^ cip_max_reg_r_used,
+    MaxRegF = CI ^ code_info_persistent ^ cip_max_reg_f_used.
+get_created_temp_frame(CI, CI ^ code_info_persistent ^ cip_created_temp_frame).
+get_static_cell_info(CI, CI ^ code_info_persistent ^ cip_static_cell_info).
+get_alloc_sites(CI, CI ^ code_info_persistent ^ cip_alloc_sites).
+get_used_env_vars(CI, CI ^ code_info_persistent ^ cip_used_env_vars).
+
+%---------------------------------------------------------------------------%
+
+set_maybe_trace_info(TI, CI,
+    CI ^ code_info_static ^ cis_maybe_trace_info := TI).
+set_forward_live_vars(LV, CI,
+    CI ^ code_info_loc_dep ^ cild_forward_live_vars := LV).
+set_instmap(IM, CI, CI ^ code_info_loc_dep ^ cild_instmap := IM).
+set_zombies(Zs, CI, CI ^ code_info_loc_dep ^ cild_zombies := Zs).
+set_var_locn_info(EI, CI, CI ^ code_info_loc_dep ^ cild_var_locn_info := EI).
+set_temps_in_use(TI, CI, CI ^ code_info_loc_dep ^ cild_temps_in_use := TI).
+set_fail_info(FI, CI, CI ^ code_info_loc_dep ^ cild_fail_info := FI).
+set_par_conj_depth(N, CI, CI ^ code_info_loc_dep ^ cild_par_conj_depth := N).
+set_label_counter(LC, CI, CI ^ code_info_persistent ^ cip_label_num_src := LC).
+set_succip_used(SU, CI, CI ^ code_info_persistent ^ cip_store_succip := SU).
+set_layout_info(LI, CI, CI ^ code_info_persistent ^ cip_label_info := LI).
+set_proc_trace_events(PTE, CI,
+    CI ^ code_info_persistent ^ cip_proc_trace_events := PTE).
+set_max_temp_slot_count(TM, CI,
+    CI ^ code_info_persistent ^ cip_stackslot_max := TM).
+set_temp_content_map(CM, CI,
+    CI ^ code_info_persistent ^ cip_temp_contents := CM).
+set_persistent_temps(PT, CI,
+    CI ^ code_info_persistent ^ cip_persistent_temps := PT).
+set_closure_seq_counter(CLS, CI,
+    CI ^ code_info_persistent ^ cip_closure_layout_seq := CLS).
+set_closure_layouts(CG, CI,
+    CI ^ code_info_persistent ^ cip_closure_layouts := CG).
+set_max_reg_in_use_at_trace(MR, MF, !CI) :-
+    !CI ^ code_info_persistent ^ cip_max_reg_r_used := MR,
+    !CI ^ code_info_persistent ^ cip_max_reg_f_used := MF.
+set_created_temp_frame(MR, CI,
+    CI ^ code_info_persistent ^ cip_created_temp_frame := MR).
+set_static_cell_info(SCI, CI,
+    CI ^ code_info_persistent ^ cip_static_cell_info := SCI).
+set_alloc_sites(ASI, CI,
+    CI ^ code_info_persistent ^ cip_alloc_sites := ASI).
+set_used_env_vars(UEV, CI,
+    CI ^ code_info_persistent ^ cip_used_env_vars := UEV).
+
+get_containing_goal_map_det(CI, ContainingGoalMap) :-
+    get_containing_goal_map(CI, MaybeContainingGoalMap),
+    (
+        MaybeContainingGoalMap = yes(ContainingGoalMap)
+    ;
+        MaybeContainingGoalMap = no,
+        unexpected($module, $pred, "no map")
+    ).
+
+add_out_of_line_code(NewCode, !CI) :-
+    Code0 = !.CI ^ code_info_persistent ^ cip_out_of_line_code,
+    Code = Code0 ++ NewCode,
+    !CI ^ code_info_persistent ^ cip_out_of_line_code := Code.
+
+get_out_of_line_code(CI, CI ^ code_info_persistent ^ cip_out_of_line_code).
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+    % Submodule for simple wrappers around access predicates.
+
+:- interface.
+
+    % Get the hlds mapping from variables to stack slots
+    %
+:- pred get_stack_slots(code_info::in, stack_slots::out) is det.
+
+    % Get the table that contains advice about where
+    % variables should be put.
+    %
+:- pred get_follow_var_map(code_info::in, abs_follow_vars_map::out) is det.
+
+    % Get the integer that gives the number of the next
+    % non-reserved register.
+    %
+:- pred get_next_non_reserved(code_info::in, reg_type::in, int::out) is det.
+
+    % Set the table that contains advice about where
+    % variables should be put.
+:- pred set_follow_vars(abs_follow_vars::in,
+    code_info::in, code_info::out) is det.
+
+    % pre_goal_update(GoalInfo, HasSubGoal, OldCodeInfo, NewCodeInfo)
+    % updates OldCodeInfo to produce NewCodeInfo with the changes
+    % specified by GoalInfo.
+    %
+:- pred pre_goal_update(hlds_goal_info::in, has_subgoals::in,
+    code_info::in, code_info::out) is det.
+
+    % post_goal_update(GoalInfo, OldCodeInfo, NewCodeInfo)
+    % updates OldCodeInfo to produce NewCodeInfo with the changes described
+    % by GoalInfo.
+    %
+:- pred post_goal_update(hlds_goal_info::in,
+    code_info::in, code_info::out) is det.
+
+    % Find out whether the body of the current procedure should use
+    % typeinfo liveness.
+    %
+:- func body_typeinfo_liveness(code_info) = bool.
+
+    % Find out the type of the given variable.
+    %
+:- func variable_type(code_info, prog_var) = mer_type.
+
+:- func variable_is_of_dummy_type(code_info, prog_var) = is_dummy_type.
+
+    % Compute the principal type constructor of the given type, and return the
+    % definition of this type constructor, if it has one (some type
+    % constructors are built in, and some are hidden behind abstraction
+    % barriers).
+    %
+:- pred search_type_defn(code_info::in, mer_type::in, hlds_type_defn::out) is
+    semidet.
+
+    % Compute the principal type constructor of the given type, and return the
+    % definition of this type constructor. Abort if it doesn't have a
+    % definition (e.g. because it is a builtin).
+    %
+:- func lookup_type_defn(code_info, mer_type) = hlds_type_defn.
+
+:- func lookup_cheaper_tag_test(code_info, mer_type) = maybe_cheaper_tag_test.
+
+:- func filter_region_vars(code_info, set_of_progvar) = set_of_progvar.
+
+    % Get the code model of the current procedure.
+    %
+:- func get_proc_model(code_info) = code_model.
+
+    % Get the list of the head variables of the current procedure.
+    %
+:- func get_headvars(code_info) = list(prog_var).
+
+    % Get the call argument information for the current procedure
+    %
+:- func get_arginfo(code_info) = list(arg_info).
+
+    % Get the call argument info for a given mode of a given predicate
+    %
+:- func get_pred_proc_arginfo(code_info, pred_id, proc_id) = list(arg_info).
+
+    % Get the set of variables currently needed by the resume
+    % points of enclosing goals.
+    %
+:- func current_resume_point_vars(code_info) = set_of_progvar.
+
+:- func variable_name(code_info, prog_var) = string.
+
+    % Create a code address which holds the address of the specified
+    % procedure.
+    % The fourth argument should be `no' if the the caller wants the
+    % returned address to be valid from everywhere in the program.
+    % If being valid from within the current procedure is enough,
+    % this argument should be `yes' wrapped around the value of the
+    % --procs-per-c-function option and the current procedure id.
+    % Using an address that is only valid from within the current
+    % procedure may make jumps more efficient.
+    %
+    % If the procs_per_c_function option tells us to put more than one
+    % procedure into each C function, but not all procedures in the module
+    % are in one function, then we would like to be able to use the
+    % fast form of reference to a procedure for references not only from
+    % within the same procedure but also from other procedures within
+    % the same C function. However, at the time of code generation,
+    % we do not yet know which procedures will be put into the same
+    % C functions, and so we cannot do this.
+    %
+:- func make_proc_entry_label(code_info, module_info, pred_id, proc_id, bool)
+    = code_addr.
+
+    % Generate the next local label in sequence.
+    %
+:- pred get_next_label(label::out, code_info::in, code_info::out)
+    is det.
+
+    % Note that the succip slot is used, and thus cannot be optimized away.
+    %
+:- pred succip_is_used(code_info::in, code_info::out) is det.
+
+:- pred add_trace_layout_for_label(label::in, term.context::in, trace_port::in,
+    bool::in, forward_goal_path::in, maybe(user_event_info)::in,
+    layout_label_info::in, code_info::in, code_info::out) is det.
+
+:- pred get_cur_proc_label(code_info::in, proc_label::out) is det.
+
+:- pred get_next_closure_seq_no(int::out,
+    code_info::in, code_info::out) is det.
+
+:- pred add_closure_layout(closure_proc_id_data::in,
+    code_info::in, code_info::out) is det.
+
+:- pred add_threadscope_string(string::in, int::out,
+    code_info::in, code_info::out) is det.
+
+:- pred get_threadscope_rev_string_table(code_info::in,
+    list(string)::out, int::out) is det.
+
+:- pred add_scalar_static_cell(list(typed_rval)::in,
+    data_id::out, code_info::in, code_info::out) is det.
+
+:- pred add_scalar_static_cell_natural_types(list(rval)::in,
+    data_id::out, code_info::in, code_info::out) is det.
+
+:- pred add_vector_static_cell(list(llds_type)::in, list(list(rval))::in,
+    data_id::out, code_info::in, code_info::out) is det.
+
+:- pred add_alloc_site_info(prog_context::in, string::in, int::in,
+    alloc_site_id::out, code_info::in, code_info::out) is det.
+
+%---------------------------------------------------------------------------%
+
+:- implementation.
+
+:- pred add_resume_layout_for_label(label::in,
+    layout_label_info::in, code_info::in, code_info::out) is det.
+
+get_stack_slots(CI, StackSlots) :-
+    get_var_locn_info(CI, VarLocnInfo),
+    var_locn_get_stack_slots(VarLocnInfo, StackSlots).
+
+get_follow_var_map(CI, FollowVarMap) :-
+    get_var_locn_info(CI, VarLocnInfo),
+    var_locn_get_follow_var_map(VarLocnInfo, FollowVarMap).
+
+get_next_non_reserved(CI, RegType, NextNonReserved) :-
+    get_var_locn_info(CI, VarLocnInfo),
+    var_locn_get_next_non_reserved(VarLocnInfo, RegType, NextNonReserved).
+
+set_follow_vars(FollowVars, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_set_follow_vars(FollowVars, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+%-----------------------------------------------------------------------------%
+
+pre_goal_update(GoalInfo, HasSubGoals, !CI) :-
+    % The liveness pass puts resume_point annotations on some kinds
+    % of goals. The parts of the code generator that handle those kinds
+    % of goals should handle the resume point annotation as well;
+    % when they do, they remove the annotation. The following code
+    % is a sanity check to make sure that this has in fact been done.
+    goal_info_get_resume_point(GoalInfo, ResumePoint),
+    (
+        ResumePoint = no_resume_point
+    ;
+        ResumePoint = resume_point(_, _),
+        unexpected($module, $pred, "pre_goal_update with resume point")
+    ),
+    goal_info_get_follow_vars(GoalInfo, MaybeFollowVars),
+    (
+        MaybeFollowVars = yes(FollowVars),
+        set_follow_vars(FollowVars, !CI)
+    ;
+        MaybeFollowVars = no
+    ),
+    % NOTE: we must be careful to apply deaths before births
+    goal_info_get_pre_deaths(GoalInfo, PreDeaths),
+    rem_forward_live_vars(PreDeaths, !CI),
+    maybe_make_vars_forward_dead(PreDeaths, no, !CI),
+    goal_info_get_pre_births(GoalInfo, PreBirths),
+    add_forward_live_vars(PreBirths, !CI),
+    (
+        HasSubGoals = does_not_have_subgoals,
+        goal_info_get_post_deaths(GoalInfo, PostDeaths),
+        rem_forward_live_vars(PostDeaths, !CI)
+    ;
+        HasSubGoals = has_subgoals
+    ).
+
+post_goal_update(GoalInfo, !CI) :-
+    % note: we must be careful to apply deaths before births
+    goal_info_get_post_deaths(GoalInfo, PostDeaths),
+    rem_forward_live_vars(PostDeaths, !CI),
+    maybe_make_vars_forward_dead(PostDeaths, no, !CI),
+    goal_info_get_post_births(GoalInfo, PostBirths),
+    add_forward_live_vars(PostBirths, !CI),
+    make_vars_forward_live(PostBirths, !CI),
+    InstMapDelta = goal_info_get_instmap_delta(GoalInfo),
+    get_instmap(!.CI, InstMap0),
+    instmap.apply_instmap_delta(InstMap0, InstMapDelta, InstMap),
+    set_instmap(InstMap, !CI).
+
+%---------------------------------------------------------------------------%
+
+body_typeinfo_liveness(CI) = TypeInfoLiveness :-
+    get_module_info(CI, ModuleInfo),
+    get_pred_id(CI, PredId),
+    module_info_pred_info(ModuleInfo, PredId, PredInfo),
+    get_globals(CI, Globals),
+    body_should_use_typeinfo_liveness(PredInfo, Globals, TypeInfoLiveness).
+
+get_var_types(CI) = VarTypes :-
+    get_proc_info(CI, ProcInfo),
+    proc_info_get_vartypes(ProcInfo, VarTypes).
+
+variable_type(CI, Var) = Type :-
+    lookup_var_type(get_var_types(CI), Var, Type).
+
+variable_is_of_dummy_type(CI, Var) = IsDummy :-
+    VarType = variable_type(CI, Var),
+    get_module_info(CI, ModuleInfo),
+    IsDummy = check_dummy_type(ModuleInfo, VarType).
+
+search_type_defn(CI, Type, TypeDefn) :-
+    get_module_info(CI, ModuleInfo),
+    type_to_ctor_det(Type, TypeCtor),
+    module_info_get_type_table(ModuleInfo, TypeTable),
+    search_type_ctor_defn(TypeTable, TypeCtor, TypeDefn).
+
+lookup_type_defn(CI, Type) = TypeDefn :-
+    ( search_type_defn(CI, Type, TypeDefnPrime) ->
+        TypeDefn = TypeDefnPrime
+    ;
+        unexpected($module, $pred, "type ctor has no definition")
+    ).
+
+lookup_cheaper_tag_test(CI, Type) = CheaperTagTest :-
+    (
+        search_type_defn(CI, Type, TypeDefn),
+        get_type_defn_body(TypeDefn, TypeBody),
+        TypeBody = hlds_du_type(_, _, CheaperTagTestPrime, _, _, _, _, _, _)
+    ->
+        CheaperTagTest = CheaperTagTestPrime
+    ;
+        CheaperTagTest = no_cheaper_tag_test
+    ).
+
+filter_region_vars(CI, ForwardLiveVarsBeforeGoal) = RegionVars :-
+    VarTypes = code_info.get_var_types(CI),
+    RegionVars = set_of_var.filter(is_region_var(VarTypes),
+        ForwardLiveVarsBeforeGoal).
+
+%---------------------------------------------------------------------------%
+
+get_proc_model(CI) = CodeModel :-
+    get_proc_info(CI, ProcInfo),
+    CodeModel = proc_info_interface_code_model(ProcInfo).
+
+get_headvars(CI) = HeadVars :-
+    get_module_info(CI, ModuleInfo),
+    get_pred_id(CI, PredId),
+    get_proc_id(CI, ProcId),
+    module_info_pred_proc_info(ModuleInfo, PredId, ProcId, _, ProcInfo),
+    proc_info_get_headvars(ProcInfo, HeadVars).
+
+get_arginfo(CI) = ArgInfo :-
+    get_pred_id(CI, PredId),
+    get_proc_id(CI, ProcId),
+    ArgInfo = get_pred_proc_arginfo(CI, PredId, ProcId).
+
+get_pred_proc_arginfo(CI, PredId, ProcId) = ArgInfo :-
+    get_module_info(CI, ModuleInfo),
+    module_info_pred_proc_info(ModuleInfo, PredId, ProcId, _, ProcInfo),
+    proc_info_arg_info(ProcInfo, ArgInfo).
+
+current_resume_point_vars(CI) = ResumeVars :-
+    get_fail_info(CI, FailInfo),
+    FailInfo = fail_info(ResumePointStack, _, _, _, _),
+    stack.det_top(ResumePointStack, ResumePointInfo),
+    pick_first_resume_point(ResumePointInfo, ResumeMap, _),
+    map.keys(ResumeMap, ResumeMapVarList),
+    ResumeVars = set_of_var.list_to_set(ResumeMapVarList).
+
+variable_name(CI, Var) = Name :-
+    get_varset(CI, Varset),
+    varset.lookup_name(Varset, Var, Name).
+
+%---------------------------------------------------------------------------%
+
+make_proc_entry_label(CI, ModuleInfo, PredId, ProcId, Immed0) = CodeAddr :-
+    (
+        Immed0 = no,
+        Immed = no
+    ;
+        Immed0 = yes,
+        get_globals(CI, Globals),
+        globals.lookup_int_option(Globals, procs_per_c_function, ProcsPerFunc),
+        get_pred_id(CI, CurPredId),
+        get_proc_id(CI, CurProcId),
+        Immed = yes(ProcsPerFunc - proc(CurPredId, CurProcId))
+    ),
+    CodeAddr = make_entry_label(ModuleInfo, PredId, ProcId, Immed).
+
+get_next_label(Label, !CI) :-
+    get_cur_proc_label(!.CI, ProcLabel),
+    get_label_counter(!.CI, C0),
+    counter.allocate(N, C0, C),
+    set_label_counter(C, !CI),
+    Label = internal_label(N, ProcLabel).
+
+succip_is_used(!CI) :-
+    set_succip_used(yes, !CI).
+
+add_trace_layout_for_label(Label, Context, Port, IsHidden, GoalPath,
+        MaybeSolverEventInfo, Layout, !CI) :-
+    get_layout_info(!.CI, Internals0),
+    Exec = yes(trace_port_layout_info(Context, Port, IsHidden, GoalPath,
+        MaybeSolverEventInfo, Layout)),
+    (
+        Label = internal_label(LabelNum, _)
+    ;
+        Label = entry_label(_, _),
+        unexpected($module, $pred, "entry")
+    ),
+    ( map.search(Internals0, LabelNum, Internal0) ->
+        Internal0 = internal_layout_info(Exec0, Resume, Return),
+        (
+            Exec0 = no
+        ;
+            Exec0 = yes(_),
+            unexpected($module, $pred, "already known label")
+        ),
+        Internal = internal_layout_info(Exec, Resume, Return),
+        map.det_update(LabelNum, Internal, Internals0, Internals)
+    ;
+        Internal = internal_layout_info(Exec, no, no),
+        map.det_insert(LabelNum, Internal, Internals0, Internals)
+    ),
+    set_layout_info(Internals, !CI).
+
+add_resume_layout_for_label(Label, LayoutInfo, !CI) :-
+    get_layout_info(!.CI, Internals0),
+    Resume = yes(LayoutInfo),
+    (
+        Label = internal_label(LabelNum, _)
+    ;
+        Label = entry_label(_, _),
+        unexpected($module, $pred, "entry")
+    ),
+    ( map.search(Internals0, LabelNum, Internal0) ->
+        Internal0 = internal_layout_info(Exec, Resume0, Return),
+        (
+            Resume0 = no
+        ;
+            Resume0 = yes(_),
+            unexpected($module, $pred, "already known label")
+        ),
+        Internal = internal_layout_info(Exec, Resume, Return),
+        map.det_update(LabelNum, Internal, Internals0, Internals)
+    ;
+        Internal = internal_layout_info(no, Resume, no),
+        map.det_insert(LabelNum, Internal, Internals0, Internals)
+    ),
+    set_layout_info(Internals, !CI).
+
+:- pred get_active_temps_data(code_info::in,
+    assoc_list(lval, slot_contents)::out) is det.
+
+get_active_temps_data(CI, Temps) :-
+    get_temps_in_use(CI, TempsInUse),
+    get_temp_content_map(CI, TempContentMap),
+    map.select(TempContentMap, TempsInUse, TempsInUseContentMap),
+    map.to_assoc_list(TempsInUseContentMap, Temps).
+
+get_cur_proc_label(CI, ProcLabel) :-
+    ProcLabel = CI ^ code_info_static ^ cis_proc_label.
+
+get_next_closure_seq_no(SeqNo, !CI) :-
+    get_closure_seq_counter(!.CI, C0),
+    counter.allocate(SeqNo, C0, C),
+    set_closure_seq_counter(C, !CI).
+
+add_closure_layout(ClosureLayout, !CI) :-
+    get_closure_layouts(!.CI, ClosureLayouts),
+    set_closure_layouts([ClosureLayout | ClosureLayouts], !CI).
+
+add_threadscope_string(String, SlotNum, !CI) :-
+    Size0 = !.CI ^ code_info_persistent ^ cip_ts_string_table_size,
+    RevTable0 = !.CI ^ code_info_persistent ^ cip_ts_rev_string_table,
+    SlotNum = Size0,
+    Size = Size0 + 1,
+    RevTable = [String | RevTable0],
+    !CI ^ code_info_persistent ^ cip_ts_string_table_size := Size,
+    !CI ^ code_info_persistent ^ cip_ts_rev_string_table := RevTable.
+
+get_threadscope_rev_string_table(CI, RevTable, TableSize) :-
+    RevTable = CI ^ code_info_persistent ^ cip_ts_rev_string_table,
+    TableSize = CI ^ code_info_persistent ^ cip_ts_string_table_size.
+
+add_scalar_static_cell(RvalsTypes, DataAddr, !CI) :-
+    get_static_cell_info(!.CI, StaticCellInfo0),
+    global_data.add_scalar_static_cell(RvalsTypes, DataAddr,
+        StaticCellInfo0, StaticCellInfo),
+    set_static_cell_info(StaticCellInfo, !CI).
+
+add_scalar_static_cell_natural_types(Rvals, DataAddr, !CI) :-
+    get_static_cell_info(!.CI, StaticCellInfo0),
+    global_data.add_scalar_static_cell_natural_types(Rvals, DataAddr,
+        StaticCellInfo0, StaticCellInfo),
+    set_static_cell_info(StaticCellInfo, !CI).
+
+add_vector_static_cell(Types, Vector, DataAddr, !CI) :-
+    get_static_cell_info(!.CI, StaticCellInfo0),
+    global_data.add_vector_static_cell(Types, Vector, DataAddr,
+        StaticCellInfo0, StaticCellInfo),
+    set_static_cell_info(StaticCellInfo, !CI).
+
+add_alloc_site_info(Context, Type, Size, AllocId, !CI) :-
+    get_cur_proc_label(!.CI, ProcLabel),
+    AllocSite = alloc_site_info(ProcLabel, Context, Type, Size),
+    AllocId = alloc_site_id(AllocSite),
+    get_alloc_sites(!.CI, AllocSites0),
+    set_tree234.insert(AllocSite, AllocSites0, AllocSites),
+    set_alloc_sites(AllocSites, !CI).
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+    % Submodule for handling branched control structures.
+
+:- interface.
+
+:- type position_info.
+:- type branch_end_info.
+
+:- type branch_end  ==  maybe(branch_end_info).
+
+:- pred remember_position(code_info::in, position_info::out) is det.
+
+:- pred reset_to_position(position_info::in,
+    code_info::in, code_info::out) is det.
+
+:- pred reset_resume_known(position_info::in,
+    code_info::in, code_info::out) is det.
+
+:- pred generate_branch_end(abs_store_map::in, branch_end::in, branch_end::out,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred after_all_branches(abs_store_map::in, branch_end::in,
+    code_info::in, code_info::out) is det.
+
+:- pred save_hp_in_branch(llds_code::out, lval::out,
+    position_info::in, position_info::out, code_info::in, code_info::out)
+    is det.
+
+:- implementation.
+
+:- type position_info
+    --->    position_info(
+                % The location-dependent part of the code_info
+                % at a given position.
+                code_info_loc_dep
+            ).
+
+:- type branch_end_info
+    --->    branch_end_info(
+                % The code_info at the end of a branch.
+                code_info
+            ).
+
+:- func pos_get_fail_info(position_info) = fail_info.
+
+pos_get_fail_info(position_info(LocDep)) = LocDep ^ cild_fail_info.
+
+remember_position(CI, position_info(CI ^ code_info_loc_dep)).
+
+reset_to_position(position_info(LocDep), CurCI, NextCI) :-
+    CurCI   = code_info(Static, _, Persistent),
+    NextCI0 = code_info(Static, LocDep, Persistent),
+
+    get_persistent_temps(NextCI0, PersistentTemps),
+    get_temps_in_use(NextCI0, TempsInUse0),
+    set.union(PersistentTemps, TempsInUse0, TempsInUse),
+    set_temps_in_use(TempsInUse, NextCI0, NextCI).
+
+reset_resume_known(BranchStart, !CI) :-
+    BranchStartFailInfo = pos_get_fail_info(BranchStart),
+    BranchStartFailInfo = fail_info(_, BSResumeKnown, _, _, _),
+    get_fail_info(!.CI, CurFailInfo),
+    CurFailInfo = fail_info(CurFailStack, _, CurCurfMaxfr, CurCondEnv,
+        CurHijack),
+    NewFailInfo = fail_info(CurFailStack, BSResumeKnown, CurCurfMaxfr,
+        CurCondEnv, CurHijack),
+    set_fail_info(NewFailInfo, !CI).
+
+generate_branch_end(StoreMap, MaybeEnd0, MaybeEnd, Code, !CI) :-
+    % The code generator generates better code if it knows in advance where
+    % each variable should go. We don't need to reset the follow_vars
+    % afterwards, since every goal following a branched control structure
+    % must in any case be annotated with its own follow_var set.
+    map.to_assoc_list(StoreMap, AbsVarLocs),
+    assoc_list.values(AbsVarLocs, AbsLocs),
+    code_util.max_mentioned_abs_regs(AbsLocs, MaxRegR, MaxRegF),
+    set_follow_vars(abs_follow_vars(StoreMap, MaxRegR + 1, MaxRegF + 1), !CI),
+    get_instmap(!.CI, InstMap),
+    ( instmap_is_reachable(InstMap) ->
+        VarLocs = assoc_list.map_values_only(abs_locn_to_lval, AbsVarLocs),
+        place_vars(VarLocs, Code, !CI)
+    ;
+        % With --opt-no-return-call, the variables that we would have
+        % saved across a call that cannot return have had the last
+        % of their code generation state destroyed, so calling
+        % place_vars would cause a code generator abort. However,
+        % pretending that all the variables are where the store map
+        % says they should be is perfectly fine, since we can never
+        % reach the end of *this* branch anyway.
+        remake_with_store_map(StoreMap, !CI),
+        Code = empty
+    ),
+    EndCodeInfo1 = !.CI,
+    (
+        MaybeEnd0 = no,
+        MaybeEnd = yes(branch_end_info(EndCodeInfo1))
+    ;
+        MaybeEnd0 = yes(branch_end_info(EndCodeInfo0)),
+
+        % Make sure the left context we leave the branched structure with
+        % is valid for all branches.
+        get_fail_info(EndCodeInfo0, FailInfo0),
+        get_fail_info(EndCodeInfo1, FailInfo1),
+        FailInfo0 = fail_info(_, ResumeKnown0, CurfrMaxfr0, CondEnv0, Hijack0),
+        FailInfo1 = fail_info(R, ResumeKnown1, CurfrMaxfr1, CondEnv1, Hijack1),
+        (
+            ResumeKnown0 = resume_point_known(Redoip0),
+            ResumeKnown1 = resume_point_known(Redoip1)
+        ->
+            ResumeKnown = resume_point_known(Redoip0),
+            expect(unify(Redoip0, Redoip1), $module, $pred, "redoip mismatch")
+        ;
+            ResumeKnown = resume_point_unknown
+        ),
+        (
+            CurfrMaxfr0 = must_be_equal,
+            CurfrMaxfr1 = must_be_equal
+        ->
+            CurfrMaxfr = must_be_equal
+        ;
+            CurfrMaxfr = may_be_different
+        ),
+        (
+            Hijack0 = allowed,
+            Hijack1 = allowed
+        ->
+            Hijack = allowed
+        ;
+            Hijack = not_allowed
+        ),
+        expect(unify(CondEnv0, CondEnv1), $module, $pred,
+            "some but not all branches inside a non condition"),
+        FailInfo = fail_info(R, ResumeKnown, CurfrMaxfr, CondEnv0, Hijack),
+        set_fail_info(FailInfo, EndCodeInfo1, EndCodeInfoA),
+
+        % Make sure the "temps in use" set at the end of the branched control
+        % structure includes every slot in use at the end of any branch.
+        get_temps_in_use(EndCodeInfo0, TempsInUse0),
+        get_temps_in_use(EndCodeInfo1, TempsInUse1),
+        set.union(TempsInUse0, TempsInUse1, TempsInUse),
+        set_temps_in_use(TempsInUse, EndCodeInfoA, EndCodeInfo),
+
+        MaybeEnd = yes(branch_end_info(EndCodeInfo))
+    ).
+
+after_all_branches(StoreMap, MaybeEnd, !CI) :-
+    (
+        MaybeEnd = yes(BranchEnd),
+        BranchEnd = branch_end_info(BranchEndCodeInfo),
+        BranchEndLocDep = BranchEndCodeInfo ^ code_info_loc_dep,
+        reset_to_position(position_info(BranchEndLocDep), !CI),
+        remake_with_store_map(StoreMap, !CI)
+    ;
+        MaybeEnd = no,
+        unexpected($module, $pred, "no branches in branched control structure")
+    ).
+
+    % remake_with_store_map throws away the var_info data structure, forgetting
+    % the current locations of all variables, and rebuilds it from scratch
+    % based on the given store map. The new var_info will know about only
+    % the variables present in the store map, and will believe they are
+    % where the store map says they are.
+    %
+:- pred remake_with_store_map(abs_store_map::in,
+    code_info::in, code_info::out) is det.
+
+remake_with_store_map(StoreMap, !CI) :-
+    map.to_assoc_list(StoreMap, VarLocns),
+    VarLvals = assoc_list.map_values_only(abs_locn_to_lval, VarLocns),
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    reinit_var_locn_state(VarLvals, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+save_hp_in_branch(Code, Slot, Pos0, Pos, CI0, CI) :-
+    CI0 = code_info(CIStatic0, CILocDep0, CIPersistent0),
+    Pos0 = position_info(LocDep0),
+    CI1 = code_info(CIStatic0, LocDep0, CIPersistent0),
+    save_hp(Code, Slot, CI1, CI2),
+    CI2 = code_info(CIStatic, LocDep, CIPersistent),
+    Pos = position_info(LocDep),
+    % Reset the location dependent part to the original.
+    CI = code_info(CIStatic, CILocDep0, CIPersistent).
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+    % Submodule for the handling of failure continuations.
+
+    % The principles underlying this submodule of code_info.m are
+    % documented in the file compiler/notes/failure.html, which also
+    % defines terms such as "quarter hijack"). Some parts of the submodule
+    % also require knowledge of compiler/notes/allocation.html.
+
+:- interface.
+
+:- type resume_map.
+
+:- type resume_point_info.
+
+    % `prepare_for_disj_hijack' should be called before entering
+    % a disjunction. It saves the values of any nondet stack slots
+    % the disjunction may hijack, and if necessary, sets the redofr
+    % slot of the top frame to point to this frame. The code at the
+    % start of the individual disjuncts will override the redoip slot.
+    %
+    % `undo_disj_hijack' should be called before entering the last disjunct
+    % of a disjunction. It undoes the effects of `prepare_for_disj_hijack'.
+    %
+:- type disj_hijack_info.
+
+:- pred prepare_for_disj_hijack(code_model::in,
+    disj_hijack_info::out, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+:- pred undo_disj_hijack(disj_hijack_info::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+    % `prepare_for_ite_hijack' should be called before entering
+    % an if-then-else. It saves the values of any nondet stack slots
+    % the if-then-else may hijack, and if necessary, sets the redofr
+    % slot of the top frame to point to this frame. Our caller
+    % will then override the redoip slot to point to the start of
+    % the else part before generating the code of the condition.
+    % The maybe(lval) argument, if set to `yes', specifies the slot
+    % holding the success record to use in deciding whether to execute
+    % a region_ite_nondet_cond_fail operation at the start of the else branch.
+    %
+    % `ite_enter_then', which should be called after generating code for
+    % the condition, sets up the failure state of the code generator
+    % for generating the then-part, and returns the code sequences
+    % to be used at the starts of the then-part and the else-part
+    % to undo the effects of any hijacking.
+    %
+:- type ite_hijack_info.
+
+:- pred prepare_for_ite_hijack(code_model::in,
+    maybe(embedded_stack_frame_id)::in, ite_hijack_info::out, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+:- pred ite_enter_then(ite_hijack_info::in, resume_point_info::in,
+    llds_code::out, llds_code::out, code_info::in, code_info::out) is det.
+
+    % `enter_simple_neg' and `leave_simple_neg' should be called before
+    % and after generating the code for a negated unification, in
+    % situations where failure is a direct branch. We handle this case
+    % specially, because it occurs frequently and should not require
+    % a flushing of the expression cache, whereas the general way of
+    % handling negations does require a flush. These two predicates
+    % handle all aspects of the negation except for the unification itself.
+    %
+:- type simple_neg_info.
+
+:- pred enter_simple_neg(list(prog_var)::in, hlds_goal_info::in,
+    simple_neg_info::out, code_info::in, code_info::out) is det.
+
+:- pred leave_simple_neg(hlds_goal_info::in, simple_neg_info::in,
+    code_info::in, code_info::out) is det.
+
+    % `prepare_for_det_commit' and `generate_det_commit' should be
+    % called before and after generating the code for the multi goal
+    % being cut across. If the goal succeeds, the commit will cut away
+    % any choice points generated in the goal.
+    %
+    % The set_of_progvar should be the set of variables live before
+    % the scope goal.
+    %
+:- type det_commit_info.
+
+:- pred prepare_for_det_commit(add_trail_ops::in, add_region_ops::in,
+    set_of_progvar::in, hlds_goal_info::in, det_commit_info::out,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred generate_det_commit(det_commit_info::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+    % `prepare_for_semi_commit' and `generate_semi_commit' should be
+    % called before and after generating the code for the nondet goal
+    % being cut across. If the goal succeeds, the commit will cut
+    % any choice points generated in the goal.
+    %
+    % The set_of_progvar should be the set of variables live before
+    % the scope goal.
+    %
+:- type semi_commit_info.
+
+:- pred prepare_for_semi_commit(add_trail_ops::in, add_region_ops::in,
+    set_of_progvar::in, hlds_goal_info::in, semi_commit_info::out,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred generate_semi_commit(semi_commit_info::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+    % Put the given resume point into effect, by pushing it on to
+    % the resume point stack, and if necessary generating code to
+    % override the redoip of the top nondet stack frame.
+    %
+:- pred effect_resume_point(resume_point_info::in, code_model::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred pop_resume_point(code_info::in, code_info::out) is det.
+
+    % Return the details of the resume point currently on top of the
+    % failure continuation stack.
+    %
+:- pred top_resume_point(code_info::in, resume_point_info::out) is det.
+
+    % Call this predicate to say "we have just left a disjunction;
+    % we don't know what address the following code will need to
+    % backtrack to".
+    %
+:- pred set_resume_point_to_unknown(code_info::in, code_info::out) is det.
+
+    % Call this predicate to say "we have just returned from a model_non
+    % call; we don't know what address the following code will need to
+    % backtrack to, and there may now be nondet frames on top of ours
+    % that do not have their redofr slots pointing to our frame".
+    %
+:- pred set_resume_point_and_frame_to_unknown(code_info::in, code_info::out)
+    is det.
+
+    % Generate code for executing a failure that is appropriate for the
+    % current failure environment.
+    %
+:- pred generate_failure(llds_code::out, code_info::in, code_info::out) is det.
+
+    % Generate code that checks if the given rval is false, and if yes,
+    % executes a failure that is appropriate for the current failure
+    % environment.
+    %
+:- pred fail_if_rval_is_false(rval::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+    % Checks whether the appropriate code for failure in the current
+    % failure environment is a direct branch.
+    %
+:- pred failure_is_direct_branch(code_info::in, code_addr::out) is semidet.
+
+    % Checks under what circumstances the current failure environment
+    % would allow a model_non call at this point to be turned into a
+    % tail call, provided of course that the return from the call is
+    % followed immediately by succeed().
+    %
+:- pred may_use_nondet_tailcall(code_info::in, nondet_tail_call::out) is det.
+
+    % Materialize the given variables into registers or stack slots.
+    %
+:- pred produce_vars(list(prog_var)::in, resume_map::out, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+    % Put the variables needed in enclosing failure continuations
+    % into their stack slots.
+    %
+:- pred flush_resume_vars_to_stack(llds_code::out,
+    code_info::in, code_info::out) is det.
+
+    % Set up the resume_point_info structure.
+    % The ResumeVars passed as the first arguments should be a sorted list
+    % without duplicates.
+    %
+:- pred make_resume_point(list(prog_var)::in, resume_locs::in, resume_map::in,
+    resume_point_info::out, code_info::in, code_info::out) is det.
+
+    % Generate the code for a resume point.
+    %
+:- pred generate_resume_point(resume_point_info::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+    % List the variables that need to be preserved for the given resume point.
+    %
+:- pred resume_point_vars(resume_point_info::in, list(prog_var)::out) is det.
+
+    % See whether the given resume point includes a code address that presumes
+    % all the resume point variables to be in their stack slots. If yes,
+    % return that code address; otherwise, abort the compiler.
+    %
+:- pred resume_point_stack_addr(resume_point_info::in, code_addr::out) is det.
+
+%---------------------------------------------------------------------------%
+
+:- implementation.
+
+    % The part of the code generator state that says how to handle
+    % failures; also called the failure continuation stack.
+
+:- type fail_info
+    --->    fail_info(
+                stack(resume_point_info),
+                resume_point_known,
+                curfr_vs_maxfr,
+                condition_env,
+                hijack_allowed
+            ).
+
+    % A resumption point has one or two labels associated with it.
+    % Backtracking can arrive at either label. The code following
+    % each label will assume that the variables needed at the resumption
+    % point are in the locations given by the resume_map associated with
+    % the given label and nowhere else. Any code that can cause
+    % backtracking to a label must make sure that those variables are
+    % in the positions expected by the label.
+    %
+    % The only time when a code_addr in a resume_point info is not a label
+    % is when the code_addr is do_redo or do_fail, which indicate that
+    % the resumption point is either unknown or not in (this invocation of)
+    % this procedure.
+    %
+:- type resume_point_info
+    --->    orig_only(resume_map, code_addr)
+    ;       stack_only(resume_map, code_addr)
+    ;       orig_and_stack(resume_map, code_addr, resume_map, code_addr)
+    ;       stack_and_orig(resume_map, code_addr, resume_map, code_addr).
+
+    % A resume map maps the variables that will be needed at a resumption
+    % point to the locations in which they will be.
+    %
+:- type resume_map      ==  map(prog_var, set(lval)).
+
+:- type redoip_update
+    --->    has_been_done
+    ;       wont_be_done.
+
+:- type resume_point_known
+    --->    resume_point_known(redoip_update)
+    ;       resume_point_unknown.
+
+:- type curfr_vs_maxfr
+    --->    must_be_equal
+    ;       may_be_different.
+
+:- type condition_env
+    --->    inside_non_condition
+    ;       not_inside_non_condition.
+
+:- type hijack_allowed
+    --->    allowed
+    ;       not_allowed.
+
+%---------------------------------------------------------------------------%
+
+:- type disj_hijack_info
+    --->    disj_no_hijack
+    ;       disj_temp_frame
+    ;       disj_quarter_hijack
+    ;       disj_half_hijack(
+                % The stack slot in which we saved the value
+                % of the hijacked redoip.
+                lval
+            )
+    ;       disj_full_hijack(
+                % The stack slot in which we saved the value
+                % of the hijacked redoip.
+                lval,
+
+                % The stack slot in which we saved the value
+                % of the hijacked redofr.
+                lval
+            ).
+
+prepare_for_disj_hijack(CodeModel, HijackInfo, Code, !CI) :-
+    get_fail_info(!.CI, FailInfo),
+    FailInfo = fail_info(ResumePoints, ResumeKnown, CurfrMaxfr, CondEnv,
+        Allow),
+    (
+        ( CodeModel = model_det
+        ; CodeModel = model_semi
+        ),
+        HijackInfo = disj_no_hijack,
+        Code = singleton(
+            llds_instr(comment("disj no hijack"), "")
+        )
+    ;
+        CodeModel = model_non,
+        (
+            CondEnv = inside_non_condition,
+            HijackInfo = disj_temp_frame,
+            create_temp_frame(do_fail, "prepare for disjunction", Code, !CI)
+        ;
+            CondEnv = not_inside_non_condition,
+            (
+                Allow = not_allowed,
+                (
+                    CurfrMaxfr = must_be_equal,
+                    ResumeKnown = resume_point_known(has_been_done),
+                    stack.pop(TopResumePoint, ResumePoints, RestResumePoints),
+                    stack.is_empty(RestResumePoints),
+                    TopResumePoint = stack_only(_, do_fail)
+                ->
+                    HijackInfo = disj_quarter_hijack,
+                    Code = singleton(
+                        llds_instr(comment("disj quarter hijack of do_fail"),
+                            "")
+                    )
+                ;
+                    HijackInfo = disj_temp_frame,
+                    create_temp_frame(do_fail, "prepare for disjunction", Code,
+                        !CI)
+                )
+            ;
+                Allow = allowed,
+                (
+                    CurfrMaxfr = must_be_equal,
+                    (
+                        ResumeKnown = resume_point_known(has_been_done),
+                        HijackInfo = disj_quarter_hijack,
+                        Code = singleton(
+                            llds_instr(comment("disj quarter hijack"), "")
+                        )
+                    ;
+                        ( ResumeKnown = resume_point_known(wont_be_done)
+                        ; ResumeKnown = resume_point_unknown
+                        ),
+                        acquire_temp_slot(slot_lval(redoip_slot(lval(curfr))),
+                            non_persistent_temp_slot, RedoipSlot, !CI),
+                        HijackInfo = disj_half_hijack(RedoipSlot),
+                        Code = singleton(
+                            llds_instr(assign(RedoipSlot,
+                                lval(redoip_slot(lval(curfr)))),
+                                "prepare for half disj hijack")
+                        )
+                    )
+                ;
+                    CurfrMaxfr = may_be_different,
+                    acquire_temp_slot(slot_lval(redoip_slot(lval(maxfr))),
+                        non_persistent_temp_slot, RedoipSlot, !CI),
+                    acquire_temp_slot(slot_lval(redofr_slot(lval(maxfr))),
+                        non_persistent_temp_slot, RedofrSlot, !CI),
+                    HijackInfo = disj_full_hijack(RedoipSlot, RedofrSlot),
+                    Code = from_list([
+                        llds_instr(
+                            assign(RedoipSlot, lval(redoip_slot(lval(maxfr)))),
+                            "prepare for full disj hijack"),
+                        llds_instr(
+                            assign(RedofrSlot, lval(redofr_slot(lval(maxfr)))),
+                            "prepare for full disj hijack"),
+                        llds_instr(
+                            assign(redofr_slot(lval(maxfr)), lval(curfr)),
+                            "prepare for full disj hijack")
+                    ])
+                )
+            )
+        )
+    ).
+
+undo_disj_hijack(HijackInfo, Code, !CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(ResumePoints, ResumeKnown, CurfrMaxfr, CondEnv,
+        Allow),
+    (
+        HijackInfo = disj_no_hijack,
+        Code = empty
+    ;
+        HijackInfo = disj_temp_frame,
+        Code = singleton(
+            llds_instr(assign(maxfr, lval(prevfr_slot(lval(maxfr)))),
+                "restore maxfr for temp frame disj")
+        )
+    ;
+        HijackInfo = disj_quarter_hijack,
+        expect(unify(CurfrMaxfr, must_be_equal), $module, $pred,
+            "maxfr may differ from curfr in disj_quarter_hijack"),
+        stack.det_top(ResumePoints, ResumePoint),
+        pick_stack_resume_point(ResumePoint, _, StackLabel),
+        LabelConst = const(llconst_code_addr(StackLabel)),
+        % peephole.m looks for the "curfr==maxfr" pattern in the comment.
+        Code = singleton(
+            llds_instr(assign(redoip_slot(lval(curfr)), LabelConst),
+                "restore redoip for quarter disj hijack (curfr==maxfr)")
+        )
+    ;
+        HijackInfo = disj_half_hijack(RedoipSlot),
+        expect(unify(ResumeKnown, resume_point_unknown), $module, $pred,
+            "resume point known in disj_half_hijack"),
+        expect(unify(CurfrMaxfr, must_be_equal), $module, $pred,
+            "maxfr may differ from curfr in disj_half_hijack"),
+        % peephole.m looks for the "curfr==maxfr" pattern in the comment.
+        Code = singleton(
+            llds_instr(assign(redoip_slot(lval(curfr)), lval(RedoipSlot)),
+                "restore redoip for half disj hijack (curfr==maxfr)")
+        )
+    ;
+        HijackInfo = disj_full_hijack(RedoipSlot, RedofrSlot),
+        expect(unify(CurfrMaxfr, may_be_different), $module, $pred,
+            "maxfr same as curfr in disj_full_hijack"),
+        Code = from_list([
+            llds_instr(assign(redoip_slot(lval(maxfr)), lval(RedoipSlot)),
+                "restore redoip for full disj hijack"),
+            llds_instr(assign(redofr_slot(lval(maxfr)), lval(RedofrSlot)),
+                "restore redofr for full disj hijack")
+        ])
+    ),
+    (
+        % HijackInfo \= disj_no_hijack if and only if the disjunction
+        % is model_non.
+        HijackInfo \= disj_no_hijack,
+        CondEnv = inside_non_condition
+    ->
+        FailInfo = fail_info(ResumePoints, resume_point_unknown, CurfrMaxfr,
+            CondEnv, Allow),
+        set_fail_info(FailInfo, !CI)
+    ;
+        true
+    ).
+
+%---------------------------------------------------------------------------%
+
+    % For model_non if-then-elses, we need to clean up the embedded stack frame
+    % we create for the if-then-else when the condition fails after succeeding.
+    % For such if-then-elses, we record the id of the embedded frame we need to
+    % clean up, and the id of the slot that is initialized to false, and set to
+    % true each time the condition succeeds.
+:- type ite_region_info
+    --->    ite_region_info(
+                embedded_stack_frame_id,
+                lval
+            ).
+
+:- type ite_hijack_info
+    --->    ite_info(
+                resume_point_known,
+                condition_env,
+                ite_hijack_type,
+                maybe(ite_region_info)
+            ).
+
+:- type ite_hijack_type
+    --->    ite_no_hijack
+    ;       ite_temp_frame(
+                % The stack slot in which we saved the value of maxfr.
+                lval
+            )
+    ;       ite_quarter_hijack
+    ;       ite_half_hijack(
+                % The stack slot in which we saved the value
+                % of the hijacked redoip.
+                lval
+            )
+    ;       ite_full_hijack(
+                % The stack slot in which we saved the value
+                % of the hijacked redoip.
+                lval,
+
+                % The stack slot in which we saved the value
+                % of the hijacked redofr.
+                lval,
+
+                % The stack slot in which we saved the value of maxfr.
+                lval
+            ).
+
+prepare_for_ite_hijack(CondCodeModel, MaybeEmbeddedFrameId, HijackInfo, Code,
+        !CI) :-
+    get_fail_info(!.CI, FailInfo),
+    FailInfo = fail_info(_, ResumeKnown, CurfrMaxfr, CondEnv, Allow),
+    (
+        % It is possible for a negated goal (which is the "Condition" of the
+        % equivalent if-then-else) to be det, if it is also impure.
+        ( CondCodeModel = model_det
+        ; CondCodeModel = model_semi
+        ),
+        expect(unify(MaybeEmbeddedFrameId, no), $module, $pred,
+            "MaybeEmbeddedFrameId in model_semi"),
+        HijackType = ite_no_hijack,
+        Code = singleton(
+            llds_instr(comment("ite no hijack"), "")
+        ),
+        MaybeRegionInfo = no
+    ;
+        CondCodeModel = model_non,
+        (
+            ( Allow = not_allowed
+            ; CondEnv = inside_non_condition
+            ; MaybeEmbeddedFrameId = yes(_)
+            )
+        ->
+            acquire_temp_slot(slot_lval(maxfr), non_persistent_temp_slot,
+                MaxfrSlot, !CI),
+            HijackType = ite_temp_frame(MaxfrSlot),
+            create_temp_frame(do_fail, "prepare for ite", TempFrameCode, !CI),
+            MaxfrCode = singleton(
+                llds_instr(assign(MaxfrSlot, lval(maxfr)), "prepare for ite")
+            ),
+            (
+                MaybeEmbeddedFrameId = yes(EmbeddedFrameId),
+                % Note that this slot is intentionally not released anywhere.
+                acquire_temp_slot(slot_success_record, persistent_temp_slot,
+                    SuccessRecordSlot, !CI),
+                InitSuccessCode = singleton(
+                    llds_instr(
+                        assign(SuccessRecordSlot, const(llconst_false)),
+                        "record no success of the condition yes")
+                ),
+                MaybeRegionInfo =
+                    yes(ite_region_info(EmbeddedFrameId, SuccessRecordSlot))
+            ;
+                MaybeEmbeddedFrameId = no,
+                InitSuccessCode = empty,
+                MaybeRegionInfo = no
+            ),
+            Code = TempFrameCode ++ MaxfrCode ++ InitSuccessCode
+        ;
+            (
+                CurfrMaxfr = must_be_equal,
+                (
+                    ResumeKnown = resume_point_known(_),
+                    HijackType = ite_quarter_hijack,
+                    Code = singleton(
+                        llds_instr(comment("ite quarter hijack"), "")
+                    )
+                ;
+                    ResumeKnown = resume_point_unknown,
+                    acquire_temp_slot(slot_lval(redoip_slot(lval(curfr))),
+                        non_persistent_temp_slot, RedoipSlot, !CI),
+                    HijackType = ite_half_hijack(RedoipSlot),
+                    Code = singleton(
+                        llds_instr(
+                            assign(RedoipSlot, lval(redoip_slot(lval(curfr)))),
+                            "prepare for half ite hijack")
+                    )
+                )
+            ;
+                CurfrMaxfr = may_be_different,
+                acquire_temp_slot(slot_lval(redoip_slot(lval(maxfr))),
+                    non_persistent_temp_slot, RedoipSlot, !CI),
+                acquire_temp_slot(slot_lval(redofr_slot(lval(maxfr))),
+                    non_persistent_temp_slot, RedofrSlot, !CI),
+                acquire_temp_slot(slot_lval(maxfr),
+                    non_persistent_temp_slot, MaxfrSlot, !CI),
+                HijackType = ite_full_hijack(RedoipSlot, RedofrSlot,
+                    MaxfrSlot),
+                Code = from_list([
+                    llds_instr(
+                        assign(MaxfrSlot, lval(maxfr)),
+                        "prepare for full ite hijack"),
+                    llds_instr(
+                        assign(RedoipSlot, lval(redoip_slot(lval(maxfr)))),
+                        "prepare for full ite hijack"),
+                    llds_instr(
+                        assign(RedofrSlot, lval(redofr_slot(lval(maxfr)))),
+                        "prepare for full ite hijack"),
+                    llds_instr(
+                        assign(redofr_slot(lval(maxfr)), lval(curfr)),
+                        "prepare for full ite hijack")
+                ])
+            ),
+            MaybeRegionInfo = no
+        ),
+        inside_non_condition(!CI)
+    ),
+    HijackInfo = ite_info(ResumeKnown, CondEnv, HijackType, MaybeRegionInfo).
+
+ite_enter_then(HijackInfo, ITEResumePoint, ThenCode, ElseCode, !CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(ResumePoints0, ResumeKnown0, CurfrMaxfr, _, Allow),
+    stack.det_pop(_, ResumePoints0, ResumePoints),
+    HijackInfo = ite_info(HijackResumeKnown, OldCondEnv, HijackType,
+        MaybeRegionInfo),
+    (
+        HijackType = ite_no_hijack,
+        expect(unify(MaybeRegionInfo, no), $module, $pred,
+            "MaybeRegionInfo ite_no_hijack"),
+        ThenCode = empty,
+        ElseCode = empty
+    ;
+        HijackType = ite_temp_frame(MaxfrSlot),
+        (
+            MaybeRegionInfo = no,
+            ThenCode = singleton(
+                % We can't remove the frame, it may not be on top.
+                llds_instr(assign(redoip_slot(lval(MaxfrSlot)),
+                    const(llconst_code_addr(do_fail))),
+                    "soft cut for temp frame ite")
+            ),
+            ElseCode = singleton(
+                % XXX search for assignments to maxfr
+                llds_instr(assign(maxfr, lval(prevfr_slot(lval(MaxfrSlot)))),
+                    "restore maxfr for temp frame ite")
+            )
+        ;
+            MaybeRegionInfo = yes(RegionInfo),
+            RegionInfo = ite_region_info(EmbeddedStackFrameId,
+                SuccessRecordSlot),
+            % XXX replace do_fail with ref to ResumePoint stack label
+            resume_point_stack_addr(ITEResumePoint, ITEStackResumeCodeAddr),
+            ThenCode = from_list([
+                llds_instr(assign(SuccessRecordSlot, const(llconst_true)),
+                    "record success of the condition"),
+                llds_instr(assign(redoip_slot(lval(MaxfrSlot)),
+                    const(llconst_code_addr(ITEStackResumeCodeAddr))),
+                    "redirect to cut for temp frame ite")
+            ]),
+            get_next_label(AfterRegionOp, !CI),
+            ElseCode = from_list([
+                llds_instr(assign(maxfr, lval(prevfr_slot(lval(MaxfrSlot)))),
+                    "restore maxfr for temp frame ite"),
+                llds_instr(if_val(unop(logical_not, lval(SuccessRecordSlot)),
+                    code_label(AfterRegionOp)),
+                    "jump around if the condition never succeeded"),
+                llds_instr(use_and_maybe_pop_region_frame(
+                    region_ite_nondet_cond_fail, EmbeddedStackFrameId),
+                    "cleanup after the post-success failure of the condition"),
+                llds_instr(goto(do_fail),
+                    "the condition succeeded, so don't execute else branch"),
+                llds_instr(label(AfterRegionOp),
+                    "after region op")
+            ])
+        )
+    ;
+        HijackType = ite_quarter_hijack,
+        expect(unify(MaybeRegionInfo, no), $module, $pred,
+            "MaybeRegionInfo ite_quarter_hijack"),
+        stack.det_top(ResumePoints, ResumePoint),
+        ( maybe_pick_stack_resume_point(ResumePoint, _, StackLabel) ->
+            LabelConst = const(llconst_code_addr(StackLabel)),
+            ThenCode = singleton(
+                llds_instr(assign(redoip_slot(lval(curfr)), LabelConst),
+                    "restore redoip for quarter ite hijack")
+            )
+        ;
+            % This can happen only if ResumePoint is unreachable from here.
+            ThenCode = empty
+        ),
+        ElseCode = ThenCode
+    ;
+        HijackType = ite_half_hijack(RedoipSlot),
+        expect(unify(MaybeRegionInfo, no), $module, $pred,
+            "MaybeRegionInfo ite_half_hijack"),
+        ThenCode = singleton(
+            llds_instr(assign(redoip_slot(lval(curfr)), lval(RedoipSlot)),
+                "restore redoip for half ite hijack")
+        ),
+        ElseCode = ThenCode
+    ;
+        HijackType = ite_full_hijack(RedoipSlot, RedofrSlot, MaxfrSlot),
+        expect(unify(MaybeRegionInfo, no), $module, $pred,
+            "MaybeRegionInfo ite_full_hijack"),
+        ThenCode = from_list([
+            llds_instr(assign(redoip_slot(lval(MaxfrSlot)), lval(RedoipSlot)),
+                "restore redoip for full ite hijack"),
+            llds_instr(assign(redofr_slot(lval(MaxfrSlot)), lval(RedofrSlot)),
+                "restore redofr for full ite hijack")
+        ]),
+        ElseCode = from_list([
+            llds_instr(assign(redoip_slot(lval(maxfr)), lval(RedoipSlot)),
+                "restore redoip for full ite hijack"),
+            llds_instr(assign(redofr_slot(lval(maxfr)), lval(RedofrSlot)),
+                "restore redofr for full ite hijack")
+        ])
+    ),
+    (
+        ResumeKnown0 = resume_point_unknown,
+        ResumeKnown = resume_point_unknown
+    ;
+        ResumeKnown0 = resume_point_known(_),
+        ResumeKnown = HijackResumeKnown
+    ),
+    FailInfo = fail_info(ResumePoints, ResumeKnown, CurfrMaxfr, OldCondEnv,
+        Allow),
+    set_fail_info(FailInfo, !CI).
+
+%---------------------------------------------------------------------------%
+
+:- type simple_neg_info ==  fail_info.
+
+enter_simple_neg(ResumeVars, GoalInfo, FailInfo0, !CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    % The only reason why we push a resume point at all is to protect
+    % the variables in ResumeVars from becoming unknown; by including them
+    % in the domain of the resume point, we guarantee that they will become
+    % zombies instead of unknown if they die in the pre- or post-goal updates.
+    % Therefore the only part of ResumePoint that matters is the set of
+    % variables in the resume map; the other parts of ResumePoint
+    % (the locations, the code address) will not be referenced.
+    map.init(ResumeMap0),
+    make_fake_resume_map(ResumeVars, ResumeMap0, ResumeMap),
+    ResumePoint = orig_only(ResumeMap, do_redo),
+    effect_resume_point(ResumePoint, model_semi, Code, !CI),
+    expect(is_empty(Code), $module, $pred, "nonempty code for simple neg"),
+    pre_goal_update(GoalInfo, does_not_have_subgoals, !CI).
+
+leave_simple_neg(GoalInfo, FailInfo, !CI) :-
+    post_goal_update(GoalInfo, !CI),
+    set_fail_info(FailInfo, !CI).
+
+:- pred make_fake_resume_map(list(prog_var)::in,
+    map(prog_var, set(lval))::in, map(prog_var, set(lval))::out) is det.
+
+make_fake_resume_map([], !ResumeMap).
+make_fake_resume_map([Var | Vars], !ResumeMap) :-
+    % A visibly fake location.
+    Locns = set.make_singleton_set(reg(reg_r, -1)),
+    map.det_insert(Var, Locns, !ResumeMap),
+    make_fake_resume_map(Vars, !ResumeMap).
+
+%---------------------------------------------------------------------------%
+
+:- type det_commit_info
+    --->    det_commit_info(
+                % Location of saved maxfr.
+                maybe(lval),
+
+                % Location of saved ticket % counter and trail pointer.
+                maybe(pair(lval)),
+
+                maybe(region_commit_stack_frame)
+            ).
+
+:- type region_commit_stack_frame
+    --->    region_commit_stack_frame(
+                % The id of the region commit stack frame, which is emdedded
+                % in the current procedure's stack frame, and whose layout is:
+
+                % saved region_commit_stack_pointer
+                % saved region sequence number
+                % number of live nonprotected regions
+                % space reserved for the ids of live nonprotected regions
+
+                embedded_stack_frame_id,
+
+                % The list of temporary slots that constitute
+                % this embedded stack frame.
+                list(lval)
+            ).
+
+prepare_for_det_commit(AddTrailOps, AddRegionOps, ForwardLiveVarsBeforeGoal,
+        CommitGoalInfo, DetCommitInfo, Code, !CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(_, _, CurfrMaxfr, _, _),
+    (
+        CurfrMaxfr = may_be_different,
+        acquire_temp_slot(slot_lval(maxfr), non_persistent_temp_slot,
+            MaxfrSlot, !CI),
+        SaveMaxfrCode = singleton(
+            llds_instr(save_maxfr(MaxfrSlot), "save the value of maxfr")
+        ),
+        MaybeMaxfrSlot = yes(MaxfrSlot)
+    ;
+        CurfrMaxfr = must_be_equal,
+        SaveMaxfrCode = empty,
+        MaybeMaxfrSlot = no
+    ),
+    maybe_save_trail_info(AddTrailOps, MaybeTrailSlots, SaveTrailCode, !CI),
+    maybe_save_region_commit_frame(AddRegionOps, ForwardLiveVarsBeforeGoal,
+        CommitGoalInfo, MaybeRegionCommitFrameInfo, SaveRegionCommitFrameCode,
+        !CI),
+    DetCommitInfo = det_commit_info(MaybeMaxfrSlot, MaybeTrailSlots,
+        MaybeRegionCommitFrameInfo),
+    Code = SaveMaxfrCode ++ SaveTrailCode ++ SaveRegionCommitFrameCode.
+
+generate_det_commit(DetCommitInfo, Code, !CI) :-
+    DetCommitInfo = det_commit_info(MaybeMaxfrSlot, MaybeTrailSlots,
+        MaybeRegionCommitFrameInfo),
+    (
+        MaybeMaxfrSlot = yes(MaxfrSlot),
+        RestoreMaxfrCode = singleton(
+            llds_instr(restore_maxfr(MaxfrSlot),
+                "restore the value of maxfr - perform commit")
+        ),
+        release_temp_slot(MaxfrSlot, non_persistent_temp_slot, !CI)
+    ;
+        MaybeMaxfrSlot = no,
+        RestoreMaxfrCode = singleton(
+            llds_instr(assign(maxfr, lval(curfr)),
+                "restore the value of maxfr - perform commit")
+        )
+    ),
+    maybe_restore_trail_info(MaybeTrailSlots, CommitTrailCode, _, !CI),
+    maybe_restore_region_commit_frame(MaybeRegionCommitFrameInfo,
+        SuccessRegionCode, _FailureRegionCode, !CI),
+    Code = RestoreMaxfrCode ++ CommitTrailCode ++ SuccessRegionCode.
+
+%---------------------------------------------------------------------------%
+
+:- type semi_commit_info
+    --->    semi_commit_info(
+                % Fail_info on entry.
+                fail_info,
+
+                resume_point_info,
+                commit_hijack_info,
+
+                % Location of saved ticket counter and trail pointer.
+                maybe(pair(lval)),
+
+                maybe(region_commit_stack_frame)
+            ).
+
+:- type commit_hijack_info
+    --->    commit_temp_frame(
+                % The stack slot in which we saved the old value of maxfr.
+                lval,
+
+                % Do we bracket the goal with MR_commit_mark and MR_commit_cut?
+                bool
+            )
+    ;       commit_quarter_hijack
+    ;       commit_half_hijack(
+                % The stack slot in which we saved the value
+                % of the hijacked redoip.
+                lval
+            )
+    ;       commit_full_hijack(
+                % The stack slot in which we saved the value
+                % of the hijacked redoip.
+                lval,
+
+                % The stack slot in which we saved the value
+                % of the hijacked redofr.
+                lval,
+
+                % The stack slot in which we saved the value of maxfr.
+                lval
+            ).
+
+prepare_for_semi_commit(AddTrailOps, AddRegionOps, ForwardLiveVarsBeforeGoal,
+        CommitGoalInfo, SemiCommitInfo, Code, !CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(ResumePoints0, ResumeKnown, CurfrMaxfr, CondEnv,
+        Allow),
+    stack.det_top(ResumePoints0, TopResumePoint),
+    clone_resume_point(TopResumePoint, NewResumePoint, !CI),
+    stack.push(NewResumePoint, ResumePoints0, ResumePoints),
+    FailInfo = fail_info(ResumePoints, resume_point_known(has_been_done),
+        CurfrMaxfr, CondEnv, Allow),
+    set_fail_info(FailInfo, !CI),
+
+    pick_stack_resume_point(NewResumePoint, _, StackLabel),
+    StackLabelConst = const(llconst_code_addr(StackLabel)),
+    (
+        ( Allow = not_allowed ; CondEnv = inside_non_condition )
+    ->
+        acquire_temp_slot(slot_lval(maxfr), non_persistent_temp_slot,
+            MaxfrSlot, !CI),
+        MaxfrCode = singleton(
+            llds_instr(save_maxfr(MaxfrSlot),
+                "prepare for temp frame commit")
+        ),
+        create_temp_frame(StackLabel,
+            "prepare for temp frame commit", TempFrameCode, !CI),
+        get_globals(!.CI, Globals),
+        globals.lookup_bool_option(Globals, use_minimal_model_stack_copy_cut,
+            UseMinimalModelStackCopyCut),
+        HijackInfo = commit_temp_frame(MaxfrSlot, UseMinimalModelStackCopyCut),
+        (
+            UseMinimalModelStackCopyCut = yes,
+            % If the code we are committing across starts but does not complete
+            % the evaluation of a tabled subgoal, the cut will remove the
+            % generator's choice point, so that the evaluation of the subgoal
+            % will never be completed. We handle such "dangling" generators
+            % by removing them from the subgoal trie of the tabled procedure.
+            % This requires knowing what tabled subgoals are started inside
+            % commits, which is why we wrap the goal being committed across
+            % inside MR_commit_{mark,cut}.
+            Components = [
+                foreign_proc_raw_code(cannot_branch_away,
+                    proc_affects_liveness, live_lvals_info(set.init),
+                    "\t\tMR_save_transient_registers();\n"),
+                foreign_proc_raw_code(cannot_branch_away,
+                    proc_does_not_affect_liveness, live_lvals_info(set.init),
+                    "\t\tMR_commit_mark();\n"),
+                foreign_proc_raw_code(cannot_branch_away,
+                    proc_affects_liveness, live_lvals_info(set.init),
+                    "\t\tMR_restore_transient_registers();\n")
+            ],
+            MD = proc_may_duplicate,
+            MarkCode = singleton(
+                llds_instr(foreign_proc_code([], Components,
+                    proc_will_not_call_mercury, no, no, no, no, no, no, MD),
+                    "")
+            )
+        ;
+            UseMinimalModelStackCopyCut = no,
+            MarkCode = empty
+        ),
+        HijackCode = MaxfrCode ++ TempFrameCode ++ MarkCode
+    ;
+        (
+            CurfrMaxfr = must_be_equal,
+            (
+                ResumeKnown = resume_point_known(has_been_done),
+                HijackInfo = commit_quarter_hijack,
+                HijackCode = singleton(
+                    llds_instr(assign(redoip_slot(lval(curfr)),
+                        StackLabelConst),
+                        "hijack the redofr slot")
+                )
+            ;
+                ( ResumeKnown = resume_point_known(wont_be_done)
+                ; ResumeKnown = resume_point_unknown
+                ),
+                acquire_temp_slot(slot_lval(redoip_slot(lval(curfr))),
+                    non_persistent_temp_slot, RedoipSlot, !CI),
+                HijackInfo = commit_half_hijack(RedoipSlot),
+                HijackCode = from_list([
+                    llds_instr(assign(RedoipSlot,
+                        lval(redoip_slot(lval(curfr)))),
+                        "prepare for half commit hijack"),
+                    llds_instr(assign(redoip_slot(lval(curfr)),
+                        StackLabelConst),
+                        "hijack the redofr slot")
+                ])
+            )
+        ;
+            CurfrMaxfr = may_be_different,
+            acquire_temp_slot(slot_lval(redoip_slot(lval(maxfr))),
+                non_persistent_temp_slot, RedoipSlot, !CI),
+            acquire_temp_slot(slot_lval(redofr_slot(lval(maxfr))),
+                non_persistent_temp_slot, RedofrSlot, !CI),
+            acquire_temp_slot(slot_lval(maxfr),
+                non_persistent_temp_slot, MaxfrSlot, !CI),
+            HijackInfo = commit_full_hijack(RedoipSlot, RedofrSlot, MaxfrSlot),
+            HijackCode = from_list([
+                llds_instr(assign(RedoipSlot, lval(redoip_slot(lval(maxfr)))),
+                    "prepare for full commit hijack"),
+                llds_instr(assign(RedofrSlot, lval(redofr_slot(lval(maxfr)))),
+                    "prepare for full commit hijack"),
+                llds_instr(save_maxfr(MaxfrSlot),
+                    "prepare for full commit hijack"),
+                llds_instr(assign(redofr_slot(lval(maxfr)), lval(curfr)),
+                    "hijack the redofr slot"),
+                llds_instr(assign(redoip_slot(lval(maxfr)), StackLabelConst),
+                    "hijack the redoip slot")
+            ])
+        )
+    ),
+    maybe_save_trail_info(AddTrailOps, MaybeTrailSlots, SaveTrailCode, !CI),
+    maybe_save_region_commit_frame(AddRegionOps, ForwardLiveVarsBeforeGoal,
+        CommitGoalInfo, MaybeRegionCommitFrameInfo, SaveRegionCommitFrameCode,
+        !CI),
+    SemiCommitInfo = semi_commit_info(FailInfo0, NewResumePoint,
+        HijackInfo, MaybeTrailSlots, MaybeRegionCommitFrameInfo),
+    Code = HijackCode ++ SaveTrailCode ++ SaveRegionCommitFrameCode.
+
+generate_semi_commit(SemiCommitInfo, Code, !CI) :-
+    SemiCommitInfo = semi_commit_info(FailInfo, ResumePoint,
+        HijackInfo, MaybeTrailSlots, MaybeRegionCommitFrameInfo),
+
+    set_fail_info(FailInfo, !CI),
+    % XXX Should release the temp slots in each arm of the switch.
+    (
+        HijackInfo = commit_temp_frame(MaxfrSlot, UseMinimalModel),
+        MaxfrCode = singleton(
+            llds_instr(restore_maxfr(MaxfrSlot),
+                "restore maxfr for temp frame hijack")
+        ),
+        (
+            UseMinimalModel = yes,
+            % See the comment in prepare_for_semi_commit above.
+            Components = [
+                foreign_proc_raw_code(cannot_branch_away,
+                    proc_does_not_affect_liveness, live_lvals_info(set.init),
+                    "\t\tMR_commit_cut();\n")
+            ],
+            MD = proc_may_duplicate,
+            CutCode = singleton(
+                llds_instr(foreign_proc_code([], Components,
+                    proc_will_not_call_mercury, no, no, no, no, no, no, MD),
+                    "commit for temp frame hijack")
+            )
+        ;
+            UseMinimalModel = no,
+            CutCode = empty
+        ),
+        SuccessUndoCode = MaxfrCode ++ CutCode,
+        FailureUndoCode = MaxfrCode ++ CutCode
+    ;
+        HijackInfo = commit_quarter_hijack,
+        FailInfo = fail_info(ResumePoints, _, _, _, _),
+        stack.det_top(ResumePoints, TopResumePoint),
+        pick_stack_resume_point(TopResumePoint, _, StackLabel),
+        StackLabelConst = const(llconst_code_addr(StackLabel)),
+        SuccessUndoCode = from_list([
+            llds_instr(assign(maxfr, lval(curfr)),
+                "restore maxfr for quarter commit hijack"),
+            llds_instr(assign(redoip_slot(lval(maxfr)), StackLabelConst),
+                "restore redoip for quarter commit hijack")
+        ]),
+        FailureUndoCode = singleton(
+            llds_instr(assign(redoip_slot(lval(maxfr)), StackLabelConst),
+                "restore redoip for quarter commit hijack")
+        )
+    ;
+        HijackInfo = commit_half_hijack(RedoipSlot),
+        SuccessUndoCode = from_list([
+            llds_instr(assign(maxfr, lval(curfr)),
+                "restore maxfr for half commit hijack"),
+            llds_instr(assign(redoip_slot(lval(maxfr)), lval(RedoipSlot)),
+                "restore redoip for half commit hijack")
+        ]),
+        FailureUndoCode = singleton(
+            llds_instr(assign(redoip_slot(lval(maxfr)), lval(RedoipSlot)),
+                "restore redoip for half commit hijack")
+        )
+    ;
+        HijackInfo = commit_full_hijack(RedoipSlot, RedofrSlot, MaxfrSlot),
+        SuccessUndoCode = from_list([
+            llds_instr(restore_maxfr(MaxfrSlot),
+                "restore maxfr for full commit hijack"),
+            llds_instr(assign(redoip_slot(lval(maxfr)), lval(RedoipSlot)),
+                "restore redoip for full commit hijack"),
+            llds_instr(assign(redofr_slot(lval(maxfr)), lval(RedofrSlot)),
+                "restore redofr for full commit hijack")
+        ]),
+        FailureUndoCode = from_list([
+            llds_instr(assign(redoip_slot(lval(maxfr)), lval(RedoipSlot)),
+                "restore redoip for full commit hijack"),
+            llds_instr(assign(redofr_slot(lval(maxfr)), lval(RedofrSlot)),
+                "restore redofr for full commit hijack")
+        ])
+    ),
+
+    remember_position(!.CI, AfterCommit),
+    generate_resume_point(ResumePoint, ResumePointCode, !CI),
+    generate_failure(FailCode, !CI),
+    reset_to_position(AfterCommit, !CI),
+
+    maybe_restore_trail_info(MaybeTrailSlots, CommitTrailCode,
+        RestoreTrailCode, !CI),
+    maybe_restore_region_commit_frame(MaybeRegionCommitFrameInfo,
+        SuccessRegionCode, FailureRegionCode, !CI),
+
+    get_next_label(SuccLabel, !CI),
+    GotoSuccLabel = singleton(
+        llds_instr(goto(code_label(SuccLabel)), "Jump to success continuation")
+    ),
+    SuccLabelCode = singleton(
+        llds_instr(label(SuccLabel), "Success continuation")
+    ),
+    SuccessCode = SuccessUndoCode ++ CommitTrailCode ++ SuccessRegionCode,
+    FailureCode = ResumePointCode ++ FailureUndoCode ++ RestoreTrailCode ++
+        FailureRegionCode ++ FailCode,
+    Code = SuccessCode ++ GotoSuccLabel ++ FailureCode ++ SuccLabelCode.
+
+%---------------------------------------------------------------------------%
+
+:- pred maybe_save_region_commit_frame(add_region_ops::in, set_of_progvar::in,
+    hlds_goal_info::in, maybe(region_commit_stack_frame)::out, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+maybe_save_region_commit_frame(AddRegionOps, _ForwardLiveVarsBeforeGoal,
+        CommitGoalInfo, MaybeRegionCommitFrameInfo, Code, !CI) :-
+    (
+        AddRegionOps = do_not_add_region_ops,
+        MaybeRegionCommitFrameInfo = no,
+        Code = empty
+    ;
+        AddRegionOps = add_region_ops,
+        MaybeRbmmInfo = goal_info_get_maybe_rbmm(CommitGoalInfo),
+        (
+            MaybeRbmmInfo = no,
+            MaybeRegionCommitFrameInfo = no,
+            Code = empty
+        ;
+            MaybeRbmmInfo = yes(RbmmInfo),
+            RbmmInfo = rbmm_goal_info(_, CommitRemovedRegionVars, _, _, _),
+
+            RemovedRegionVarList = set.to_sorted_list(CommitRemovedRegionVars),
+
+            NumRemovedRegionVars = list.length(RemovedRegionVarList),
+
+            code_info.get_globals(!.CI, Globals),
+            globals.lookup_int_option(Globals, size_region_commit_fixed,
+                FixedSize),
+            globals.lookup_int_option(Globals, size_region_commit_entry,
+                EntrySize),
+            FrameSize = FixedSize + EntrySize * NumRemovedRegionVars,
+            Items = list.duplicate(FrameSize, slot_region_commit),
+            acquire_several_temp_slots(Items, non_persistent_temp_slot,
+                StackVars, MainStackId, FirstSlotNum, LastSlotNum, !CI),
+            EmbeddedStackFrame = embedded_stack_frame_id(MainStackId,
+                FirstSlotNum, LastSlotNum),
+            FirstSavedRegionAddr = first_nonfixed_embedded_slot_addr(
+                EmbeddedStackFrame, FixedSize),
+            acquire_reg(reg_r, NumRegLval, !CI),
+            acquire_reg(reg_r, AddrRegLval, !CI),
+            PushInitCode = from_list([
+                llds_instr(
+                    push_region_frame(region_stack_commit, EmbeddedStackFrame),
+                    "Save stack pointer of embedded region commit stack"),
+                llds_instr(
+                    assign(NumRegLval, const(llconst_int(0))),
+                    "Initialize number of unprotected live regions"),
+                llds_instr(
+                    assign(AddrRegLval, FirstSavedRegionAddr),
+                    "Initialize pointer to the next unprotected live" ++
+                    " region slot")
+            ]),
+            save_unprotected_live_regions(NumRegLval, AddrRegLval,
+                EmbeddedStackFrame, RemovedRegionVarList, FillCode, !CI),
+            SetCode = singleton(
+                llds_instr(
+                    region_set_fixed_slot(region_set_commit_num_entries,
+                        EmbeddedStackFrame, lval(NumRegLval)),
+                    "Store the number of unprotected live regions")
+            ),
+            release_reg(NumRegLval, !CI),
+            release_reg(AddrRegLval, !CI),
+
+            RegionCommitFrameInfo =
+                region_commit_stack_frame(EmbeddedStackFrame, StackVars),
+            MaybeRegionCommitFrameInfo = yes(RegionCommitFrameInfo),
+
+            Code = PushInitCode ++ FillCode ++ SetCode
+        )
+    ).
+
+:- pred save_unprotected_live_regions(lval::in, lval::in,
+    embedded_stack_frame_id::in, list(prog_var)::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+save_unprotected_live_regions(_, _, _, [], empty, !CI).
+save_unprotected_live_regions(NumLval, AddrLval, EmbeddedStackFrame,
+        [RegionVar | RegionVars], Code ++ Codes, !CI) :-
+    produce_variable(RegionVar, ProduceVarCode, RegionVarRval, !CI),
+    SaveCode = singleton(
+        llds_instr(
+            region_fill_frame(region_fill_commit, EmbeddedStackFrame,
+                RegionVarRval, NumLval, AddrLval),
+            "Save the region in the commit stack frame if it is unprotected")
+    ),
+    Code = ProduceVarCode ++ SaveCode,
+    save_unprotected_live_regions(NumLval, AddrLval, EmbeddedStackFrame,
+        RegionVars, Codes, !CI).
+
+:- pred maybe_restore_region_commit_frame(maybe(region_commit_stack_frame)::in,
+    llds_code::out, llds_code::out, code_info::in, code_info::out) is det.
+
+maybe_restore_region_commit_frame(MaybeRegionCommitFrameInfo,
+        SuccessCode, FailureCode, !CI) :-
+    (
+        MaybeRegionCommitFrameInfo = no,
+        SuccessCode = empty,
+        FailureCode = empty
+    ;
+        MaybeRegionCommitFrameInfo = yes(RegionCommitFrameInfo),
+        RegionCommitFrameInfo = region_commit_stack_frame(EmbeddedStackFrame,
+            StackVars),
+        SuccessCode = singleton(
+            llds_instr(
+                use_and_maybe_pop_region_frame(region_commit_success,
+                    EmbeddedStackFrame),
+                "Destroy removed regions protected by cut away disjunctions")
+        ),
+        FailureCode = singleton(
+            llds_instr(
+                use_and_maybe_pop_region_frame(region_commit_failure,
+                    EmbeddedStackFrame),
+                "Undo the creation of the commit frame")
+        ),
+        release_several_temp_slots(StackVars, non_persistent_temp_slot, !CI)
+    ).
+
+%---------------------------------------------------------------------------%
+
+:- pred inside_non_condition(code_info::in, code_info::out) is det.
+
+inside_non_condition(!CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(ResumePoints, ResumeKnown, CurfrMaxfr, _, Allow),
+    FailInfo = fail_info(ResumePoints, ResumeKnown, CurfrMaxfr,
+        inside_non_condition, Allow),
+    set_fail_info(FailInfo, !CI).
+
+:- pred create_temp_frame(code_addr::in, string::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+create_temp_frame(Redoip, Comment, Code, !CI) :-
+    ( get_proc_model(!.CI) = model_non ->
+        Kind = nondet_stack_proc
+    ;
+        Kind = det_stack_proc
+    ),
+    Code = singleton(
+        llds_instr(mkframe(temp_frame(Kind), yes(Redoip)), Comment)
+    ),
+    set_created_temp_frame(yes, !CI),
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(ResumePoints, ResumeKnown, _, CondEnv, Allow),
+    FailInfo = fail_info(ResumePoints, ResumeKnown, may_be_different,
+        CondEnv, Allow),
+    set_fail_info(FailInfo, !CI).
+
+%---------------------------------------------------------------------------%
+
+effect_resume_point(ResumePoint, CodeModel, Code, !CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(ResumePoints0, _ResumeKnown, CurfrMaxfr,
+        CondEnv, Allow),
+    ( stack.top(ResumePoints0, OldResumePoint) ->
+        pick_first_resume_point(OldResumePoint, OldMap, _),
+        pick_first_resume_point(ResumePoint, NewMap, _),
+        map.keys(OldMap, OldKeys),
+        map.keys(NewMap, NewKeys),
+        set.list_to_set(OldKeys, OldKeySet),
+        set.list_to_set(NewKeys, NewKeySet),
+        expect(set.subset(OldKeySet, NewKeySet), $module, $pred,
+            "non-nested resume point variable sets")
+    ;
+        true
+    ),
+    stack.push(ResumePoint, ResumePoints0, ResumePoints),
+    (
+        CodeModel = model_non,
+        pick_stack_resume_point(ResumePoint, _, StackLabel),
+        LabelConst = const(llconst_code_addr(StackLabel)),
+        Code = singleton(
+            llds_instr(assign(redoip_slot(lval(maxfr)), LabelConst),
+                "hijack redoip to effect resume point")
+        ),
+        RedoipUpdate = has_been_done
+    ;
+        ( CodeModel = model_det
+        ; CodeModel = model_semi
+        ),
+        Code = empty,
+        RedoipUpdate = wont_be_done
+    ),
+    FailInfo = fail_info(ResumePoints, resume_point_known(RedoipUpdate),
+        CurfrMaxfr, CondEnv, Allow),
+    set_fail_info(FailInfo, !CI).
+
+pop_resume_point(!CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(ResumePoints0, ResumeKnown, CurfrMaxfr,
+        CondEnv, Allow),
+    stack.det_pop(_, ResumePoints0, ResumePoints),
+    FailInfo = fail_info(ResumePoints, ResumeKnown, CurfrMaxfr,
+        CondEnv, Allow),
+    set_fail_info(FailInfo, !CI).
+
+%---------------------------------------------------------------------------%
+
+top_resume_point(CI, ResumePoint) :-
+    get_fail_info(CI, FailInfo),
+    FailInfo = fail_info(ResumePoints, _, _, _, _),
+    stack.det_top(ResumePoints, ResumePoint).
+
+set_resume_point_to_unknown(!CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(ResumePoints, _, CurfrMaxfr, CondEnv, Allow),
+    FailInfo = fail_info(ResumePoints, resume_point_unknown,
+        CurfrMaxfr, CondEnv, Allow),
+    set_fail_info(FailInfo, !CI).
+
+set_resume_point_and_frame_to_unknown(!CI) :-
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(ResumePoints, _, _, CondEnv, Allow),
+    FailInfo = fail_info(ResumePoints, resume_point_unknown, may_be_different,
+        CondEnv, Allow),
+    set_fail_info(FailInfo, !CI).
+
+%---------------------------------------------------------------------------%
+
+generate_failure(Code, !CI) :-
+    get_fail_info(!.CI, FailInfo),
+    FailInfo = fail_info(ResumePoints, ResumeKnown, _, _, _),
+    (
+        ResumeKnown = resume_point_known(_),
+        stack.det_top(ResumePoints, TopResumePoint),
+        ( pick_matching_resume_addr(!.CI, TopResumePoint, FailureAddress0) ->
+            FailureAddress = FailureAddress0,
+            PlaceCode = empty
+        ;
+            pick_first_resume_point(TopResumePoint, Map, FailureAddress),
+            map.to_assoc_list(Map, AssocList),
+            remember_position(!.CI, CurPos),
+            pick_and_place_vars(AssocList, _, PlaceCode, !CI),
+            reset_to_position(CurPos, !CI)
+        ),
+        BranchCode = singleton(llds_instr(goto(FailureAddress), "fail")),
+        Code = PlaceCode ++ BranchCode
+    ;
+        ResumeKnown = resume_point_unknown,
+        Code = singleton(llds_instr(goto(do_redo), "fail"))
+    ).
+
+fail_if_rval_is_false(Rval0, Code, !CI) :-
+    get_fail_info(!.CI, FailInfo),
+    FailInfo = fail_info(ResumePoints, ResumeKnown, _, _, _),
+    (
+        ResumeKnown = resume_point_known(_),
+        stack.det_top(ResumePoints, TopResumePoint),
+        ( pick_matching_resume_addr(!.CI, TopResumePoint, FailureAddress0) ->
+            % We branch away if the test *fails*
+            code_util.neg_rval(Rval0, Rval),
+            Code = singleton(
+                llds_instr(if_val(Rval, FailureAddress0), "Test for failure")
+            )
+        ;
+            pick_first_resume_point(TopResumePoint, Map, FailureAddress),
+            map.to_assoc_list(Map, AssocList),
+            get_next_label(SuccessLabel, !CI),
+            remember_position(!.CI, CurPos),
+            pick_and_place_vars(AssocList, _, PlaceCode, !CI),
+            reset_to_position(CurPos, !CI),
+            SuccessAddress = code_label(SuccessLabel),
+            % We branch away if the test *fails*, therefore if the test
+            % succeeds, we branch around the code that moves variables to
+            % their failure locations and branches away to the failure
+            % continuation.
+            TestCode = singleton(
+                llds_instr(if_val(Rval0, SuccessAddress), "Test for failure")
+            ),
+            TailCode = from_list([
+                llds_instr(goto(FailureAddress), "Goto failure"),
+                llds_instr(label(SuccessLabel), "Success continuation")
+            ]),
+            Code = TestCode ++ PlaceCode ++ TailCode
+        )
+    ;
+        ResumeKnown = resume_point_unknown,
+        % We branch away if the test *fails*
+        code_util.neg_rval(Rval0, Rval),
+        Code = singleton(
+            llds_instr(if_val(Rval, do_redo), "Test for failure")
+        )
+    ).
+
+%---------------------------------------------------------------------------%
+
+failure_is_direct_branch(CI, CodeAddr) :-
+    get_fail_info(CI, FailInfo),
+    FailInfo = fail_info(ResumePoints, resume_point_known(_), _, _, _),
+    stack.top(ResumePoints, TopResumePoint),
+    pick_matching_resume_addr(CI, TopResumePoint, CodeAddr).
+
+may_use_nondet_tailcall(CI, TailCallStatus) :-
+    get_fail_info(CI, FailInfo),
+    FailInfo = fail_info(ResumePoints0, ResumeKnown, _, _, _),
+    (
+        stack.pop(ResumePoint1, ResumePoints0, ResumePoints1),
+        stack.is_empty(ResumePoints1),
+        ResumePoint1 = stack_only(_, do_fail)
+    ->
+        (
+            ResumeKnown = resume_point_known(_),
+            TailCallStatus = unchecked_tail_call
+        ;
+            ResumeKnown = resume_point_unknown,
+            TailCallStatus = checked_tail_call
+        )
+    ;
+        TailCallStatus = no_tail_call
+    ).
+
+%---------------------------------------------------------------------------%
+
+    % See whether the current locations of variables match the locations
+    % associated with any of the options in the given failure map.
+    % If yes, return the code_addr of that option.
+    %
+:- pred pick_matching_resume_addr(code_info::in,
+    resume_point_info::in, code_addr::out) is semidet.
+
+pick_matching_resume_addr(CI, ResumeMaps, Addr) :-
+    variable_locations(CI, CurLocs),
+    (
+        ResumeMaps = orig_only(Map1, Addr1),
+        ( match_resume_loc(Map1, CurLocs) ->
+            Addr = Addr1
+        ;
+            fail
+        )
+    ;
+        ResumeMaps = stack_only(Map1, Addr1),
+        ( match_resume_loc(Map1, CurLocs) ->
+            Addr = Addr1
+        ;
+            fail
+        )
+    ;
+        ResumeMaps = orig_and_stack(Map1, Addr1, Map2, Addr2),
+        ( match_resume_loc(Map1, CurLocs) ->
+            Addr = Addr1
+        ; match_resume_loc(Map2, CurLocs) ->
+            Addr = Addr2
+        ;
+            fail
+        )
+    ;
+        ResumeMaps = stack_and_orig(Map1, Addr1, Map2, Addr2),
+        ( match_resume_loc(Map1, CurLocs) ->
+            Addr = Addr1
+        ; match_resume_loc(Map2, CurLocs) ->
+            Addr = Addr2
+        ;
+            fail
+        )
+    ).
+
+:- pred match_resume_loc(resume_map::in, resume_map::in) is semidet.
+
+match_resume_loc(Map, Locations0) :-
+    map.keys(Map, KeyList),
+    set.list_to_set(KeyList, Keys),
+    map.select(Locations0, Keys, Locations),
+    map.to_assoc_list(Locations, List),
+    all_vars_match_resume_map(Map, List).
+
+:- pred all_vars_match_resume_map(resume_map::in,
+    assoc_list(prog_var, set(lval))::in) is semidet.
+
+all_vars_match_resume_map(_Map, []).
+all_vars_match_resume_map(Map, [Var - Actual | VarsActuals]) :-
+    map.search(Map, Var, Lvals),
+    set.subset(Lvals, Actual),
+    all_vars_match_resume_map(Map, VarsActuals).
+
+:- pred pick_first_resume_point(resume_point_info::in,
+    resume_map::out, code_addr::out) is det.
+
+pick_first_resume_point(orig_only(Map, Addr), Map, Addr).
+pick_first_resume_point(stack_only(Map, Addr), Map, Addr).
+pick_first_resume_point(orig_and_stack(Map, Addr, _, _), Map, Addr).
+pick_first_resume_point(stack_and_orig(Map, Addr, _, _), Map, Addr).
+
+:- pred pick_stack_resume_point(resume_point_info::in,
+    resume_map::out, code_addr::out) is det.
+
+pick_stack_resume_point(ResumePoint, Map, Addr) :-
+    ( maybe_pick_stack_resume_point(ResumePoint, Map1, Addr1) ->
+        Map = Map1,
+        Addr = Addr1
+    ;
+        unexpected($module, $pred, "no stack resume point")
+    ).
+
+:- pred maybe_pick_stack_resume_point(resume_point_info::in,
+    resume_map::out, code_addr::out) is semidet.
+
+maybe_pick_stack_resume_point(stack_only(Map, Addr), Map, Addr).
+maybe_pick_stack_resume_point(orig_and_stack(_, _, Map, Addr),
+    Map, Addr).
+maybe_pick_stack_resume_point(stack_and_orig(Map, Addr, _, _),
+    Map, Addr).
+
+%---------------------------------------------------------------------------%
+
+produce_vars([], Map, empty, !CI) :-
+    map.init(Map).
+produce_vars([Var | Vars], Map, Code, !CI) :-
+    produce_vars(Vars, Map0, CodeVars, !CI),
+    produce_variable_in_reg_or_stack(Var, CodeVar, Lval, !CI),
+    Lvals = set.make_singleton_set(Lval),
+    map.set(Var, Lvals, Map0, Map),
+    Code = CodeVars ++ CodeVar.
+
+flush_resume_vars_to_stack(Code, !CI) :-
+    compute_resume_var_stack_locs(!.CI, VarLocs),
+    place_vars(VarLocs, Code, !CI).
+
+:- pred compute_resume_var_stack_locs(code_info::in,
+    assoc_list(prog_var, lval)::out) is det.
+
+compute_resume_var_stack_locs(CI, VarLocs) :-
+    get_fail_info(CI, FailInfo),
+    FailInfo = fail_info(ResumePointStack, _, _, _, _),
+    stack.det_top(ResumePointStack, ResumePoint),
+    pick_stack_resume_point(ResumePoint, StackMap, _),
+    map.to_assoc_list(StackMap, VarLocSets),
+    pick_var_places(VarLocSets, VarLocs).
+
+%---------------------------------------------------------------------------%
+
+:- pred init_fail_info(code_model::in, maybe(set_of_progvar)::in,
+    resume_point_info::out, code_info::in, code_info::out) is det.
+
+init_fail_info(CodeModel, MaybeFailVars, ResumePoint, !CI) :-
+    (
+        CodeModel = model_det,
+        get_next_label(ResumeLabel, !CI),
+        ResumeAddress = code_label(ResumeLabel),
+        ResumeKnown = resume_point_unknown,
+        CurfrMaxfr = may_be_different
+    ;
+        CodeModel = model_semi,
+        % The resume point for this label will be part of the procedure epilog.
+        get_next_label(ResumeLabel, !CI),
+        ResumeAddress = code_label(ResumeLabel),
+        ResumeKnown = resume_point_known(wont_be_done),
+        CurfrMaxfr = may_be_different
+    ;
+        CodeModel = model_non,
+        (
+            MaybeFailVars = yes(_),
+            get_next_label(ResumeLabel, !CI),
+            ResumeAddress = code_label(ResumeLabel)
+        ;
+            MaybeFailVars = no,
+            ResumeAddress = do_fail
+        ),
+        ResumeKnown = resume_point_known(has_been_done),
+        CurfrMaxfr = must_be_equal
+    ),
+    (
+        MaybeFailVars = yes(FailVars),
+        get_stack_slots(!.CI, StackSlots),
+        map.select_sorted_list(StackSlots, set_of_var.to_sorted_list(FailVars),
+            AbsStackMap),
+        map.to_assoc_list(AbsStackMap, AbsStackList),
+        StackList0 = assoc_list.map_values_only(stack_slot_to_lval,
+            AbsStackList),
+        make_singleton_sets(StackList0, StackList),
+        map.from_sorted_assoc_list(StackList, StackMap)
+    ;
+        MaybeFailVars = no,
+        map.init(StackMap)
+    ),
+    ResumePoint = stack_only(StackMap, ResumeAddress),
+    stack.init(ResumeStack0),
+    stack.push(ResumePoint, ResumeStack0, ResumeStack),
+    get_fail_info(!.CI, FailInfo0),
+    FailInfo0 = fail_info(_, _, _, _, Allow),
+    FailInfo = fail_info(ResumeStack, ResumeKnown, CurfrMaxfr,
+        not_inside_non_condition, Allow),
+    set_fail_info(FailInfo, !CI).
+
+%---------------------------------------------------------------------------%
+
+make_resume_point(ResumeVars, ResumeLocs, FullMap, ResumePoint, !CI) :-
+    get_stack_slots(!.CI, StackSlots),
+    map.select_sorted_list(FullMap, ResumeVars, OrigMap),
+    (
+        ResumeLocs = resume_locs_orig_only,
+        get_next_label(OrigLabel, !CI),
+        OrigAddr = code_label(OrigLabel),
+        ResumePoint = orig_only(OrigMap, OrigAddr),
+        trace [compiletime(flag("codegen_goal")), io(!IO)] (
+            ( should_trace_code_gen(!.CI) ->
+                code_info.get_varset(!.CI, VarSet),
+                io.write_string("orig_only\n", !IO),
+                output_resume_map(VarSet, OrigMap, !IO),
+                io.flush_output(!IO)
+            ;
+                true
+            )
+        )
+    ;
+        ResumeLocs = resume_locs_stack_only,
+        make_stack_resume_map(ResumeVars, StackSlots, StackMap),
+        get_next_label(StackLabel, !CI),
+        StackAddr = code_label(StackLabel),
+        ResumePoint = stack_only(StackMap, StackAddr),
+        trace [compiletime(flag("codegen_goal")), io(!IO)] (
+            ( should_trace_code_gen(!.CI) ->
+                code_info.get_varset(!.CI, VarSet),
+                io.write_string("stack_only\n", !IO),
+                output_resume_map(VarSet, StackMap, !IO),
+                io.flush_output(!IO)
+            ;
+                true
+            )
+        )
+    ;
+        ResumeLocs = resume_locs_orig_and_stack,
+        make_stack_resume_map(ResumeVars, StackSlots, StackMap),
+        get_next_label(OrigLabel, !CI),
+        OrigAddr = code_label(OrigLabel),
+        get_next_label(StackLabel, !CI),
+        StackAddr = code_label(StackLabel),
+        ResumePoint = orig_and_stack(OrigMap, OrigAddr, StackMap, StackAddr),
+        trace [compiletime(flag("codegen_goal")), io(!IO)] (
+            ( should_trace_code_gen(!.CI) ->
+                code_info.get_varset(!.CI, VarSet),
+                io.write_string("stack_and_orig\n", !IO),
+                io.write_string("orig:\n", !IO),
+                output_resume_map(VarSet, OrigMap, !IO),
+                io.write_string("stack:\n", !IO),
+                output_resume_map(VarSet, StackMap, !IO),
+                io.flush_output(!IO)
+            ;
+                true
+            )
+        )
+    ;
+        ResumeLocs = resume_locs_stack_and_orig,
+        make_stack_resume_map(ResumeVars, StackSlots, StackMap),
+        get_next_label(StackLabel, !CI),
+        StackAddr = code_label(StackLabel),
+        get_next_label(OrigLabel, !CI),
+        OrigAddr = code_label(OrigLabel),
+        ResumePoint = stack_and_orig(StackMap, StackAddr, OrigMap, OrigAddr),
+        trace [compiletime(flag("codegen_goal")), io(!IO)] (
+            ( should_trace_code_gen(!.CI) ->
+                code_info.get_varset(!.CI, VarSet),
+                io.write_string("stack_and_orig\n", !IO),
+                io.write_string("stack:\n", !IO),
+                output_resume_map(VarSet, StackMap, !IO),
+                io.write_string("orig:\n", !IO),
+                output_resume_map(VarSet, OrigMap, !IO),
+                io.flush_output(!IO)
+            ;
+                true
+            )
+        )
+    ).
+
+:- pred make_stack_resume_map(list(prog_var)::in, stack_slots::in,
+    map(prog_var, set(lval))::out) is det.
+
+make_stack_resume_map(ResumeVars, StackSlots, StackMap) :-
+    map.select_sorted_list(StackSlots, ResumeVars, StackMap0),
+    map.to_assoc_list(StackMap0, AbsStackList),
+    StackList0 = assoc_list.map_values_only(stack_slot_to_lval, AbsStackList),
+    make_singleton_sets(StackList0, StackList),
+    map.from_sorted_assoc_list(StackList, StackMap).
+
+:- pred make_singleton_sets(assoc_list(prog_var, lval)::in,
+    assoc_list(prog_var, set(lval))::out) is det.
+
+make_singleton_sets([], []).
+make_singleton_sets([Var - Lval | Tail], [Var - Lvals | SetTail]) :-
+    Lvals = set.make_singleton_set(Lval),
+    make_singleton_sets(Tail, SetTail).
+
+%---------------------------------------------------------------------------%
+
+    % The code we generate for a resumption point looks like this:
+    %
+    % label(StackLabel)
+    % <assume variables are where StackMap says they are>
+    % <copy variables to their locations according to OrigMap>
+    % label(OrigLabel)
+    % <assume variables are where OrigMap says they are>
+    %
+    % Failures at different points may cause control to arrive at
+    % the resumption point via either label, which is why the last
+    % line is necessary.
+    %
+    % The idea is that failures from other procedures will go to
+    % StackLabel, and that failures from this procedure while
+    % everything is in its original place will go to OrigLabel.
+    % Failures from this procedure where not everything is in its
+    % original place can go to either, after moving the resume variables
+    % to the places where the label expects them.
+    %
+    % The above layout (stack, then orig) is the most common. However,
+    % liveness.m may decide that one or other of the two labels will
+    % never be referred to (e.g. because there are no calls inside
+    % the range of effect of the resumption point or because a call
+    % follows immediately after the establishment of the resumption
+    % point), or that it would be more efficient to put the two labels
+    % in the other order (e.g. because the code after the resumption point
+    % needs most of the variables in their stack slots).
+
+generate_resume_point(ResumePoint, Code, !CI) :-
+    (
+        ResumePoint = orig_only(Map1, Addr1),
+        extract_label_from_code_addr(Addr1, Label1),
+        Code = singleton(
+            llds_instr(label(Label1), "orig only failure continuation")
+        ),
+        set_var_locations(Map1, !CI)
+    ;
+        ResumePoint = stack_only(Map1, Addr1),
+        extract_label_from_code_addr(Addr1, Label1),
+        Code = singleton(
+            llds_instr(label(Label1), "stack only failure continuation")
+        ),
+        set_var_locations(Map1, !CI),
+        generate_resume_layout(Label1, Map1, !CI)
+    ;
+        ResumePoint = stack_and_orig(Map1, Addr1, Map2, Addr2),
+        extract_label_from_code_addr(Addr1, Label1),
+        extract_label_from_code_addr(Addr2, Label2),
+        Label1Code = singleton(
+            llds_instr(label(Label1), "stack failure continuation before orig")
+        ),
+        set_var_locations(Map1, !CI),
+        generate_resume_layout(Label1, Map1, !CI),
+        map.to_assoc_list(Map2, AssocList2),
+        place_resume_vars(AssocList2, PlaceCode, !CI),
+        Label2Code = singleton(
+            llds_instr(label(Label2), "orig failure continuation after stack")
+        ),
+        set_var_locations(Map2, !CI),
+        Code = Label1Code ++ PlaceCode ++ Label2Code
+    ;
+        ResumePoint = orig_and_stack(Map1, Addr1, Map2, Addr2),
+        extract_label_from_code_addr(Addr1, Label1),
+        extract_label_from_code_addr(Addr2, Label2),
+        Label1Code = singleton(
+            llds_instr(label(Label1), "orig failure continuation before stack")
+        ),
+        set_var_locations(Map1, !CI),
+        map.to_assoc_list(Map2, AssocList2),
+        place_resume_vars(AssocList2, PlaceCode, !CI),
+        Label2Code = singleton(
+            llds_instr(label(Label2), "stack failure continuation after orig")
+        ),
+        set_var_locations(Map2, !CI),
+        generate_resume_layout(Label2, Map2, !CI),
+        Code = Label1Code ++ PlaceCode ++ Label2Code
+    ).
+
+:- pred extract_label_from_code_addr(code_addr::in, label::out) is det.
+
+extract_label_from_code_addr(CodeAddr, Label) :-
+    ( CodeAddr = code_label(Label0) ->
+        Label = Label0
+    ;
+        unexpected($module, $pred, "non-label")
+    ).
+
+:- pred place_resume_vars(assoc_list(prog_var, set(lval))::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+place_resume_vars([], empty, !CI).
+place_resume_vars([Var - TargetSet | Rest], Code, !CI) :-
+    set.to_sorted_list(TargetSet, Targets),
+    place_resume_var(Var, Targets, FirstCode, !CI),
+    place_resume_vars(Rest, RestCode, !CI),
+    Code = FirstCode ++ RestCode.
+
+:- pred place_resume_var(prog_var::in, list(lval)::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+place_resume_var(_Var, [], empty, !CI).
+place_resume_var(Var, [Target | Targets], Code, !CI) :-
+    place_var(Var, Target, FirstCode, !CI),
+    place_resume_var(Var, Targets, RestCode, !CI),
+    Code = FirstCode ++ RestCode.
+
+    % Reset the code generator's database of what is where.
+    % Remember that the variables in the map are available in their
+    % associated rvals; forget about all other variables.
+    %
+:- pred set_var_locations(resume_map::in,
+    code_info::in, code_info::out) is det.
+
+set_var_locations(Map, !CI) :-
+    map.to_assoc_list(Map, LvalList0),
+    flatten_varlval_list(LvalList0, LvalList),
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    reinit_var_locn_state(LvalList, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+:- pred flatten_varlval_list(assoc_list(prog_var, set(lval))::in,
+    assoc_list(prog_var, lval)::out) is det.
+
+flatten_varlval_list([], []).
+flatten_varlval_list([V - Rvals | Rest0], All) :-
+    flatten_varlval_list(Rest0, Rest),
+    set.to_sorted_list(Rvals, RvalList),
+    flatten_varlval_list_2(RvalList, V, Rest1),
+    list.append(Rest1, Rest, All).
+
+:- pred flatten_varlval_list_2(list(lval)::in, prog_var::in,
+    assoc_list(prog_var, lval)::out) is det.
+
+flatten_varlval_list_2([], _V, []).
+flatten_varlval_list_2([R | Rs], V, [V - R | Rest]) :-
+    flatten_varlval_list_2(Rs, V, Rest).
+
+resume_point_vars(ResumePoint, Vars) :-
+    pick_first_resume_point(ResumePoint, ResumeMap, _),
+    map.keys(ResumeMap, Vars).
+
+resume_point_stack_addr(ResumePoint, StackAddr) :-
+    pick_stack_resume_point(ResumePoint, _, StackAddr).
+
+%---------------------------------------------------------------------------%
+
+:- pred maybe_save_trail_info(add_trail_ops::in, maybe(pair(lval))::out,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+maybe_save_trail_info(AddTrailOps, MaybeTrailSlots, SaveTrailCode, !CI) :-
+    (
+        AddTrailOps = add_trail_ops,
+        acquire_temp_slot(slot_ticket_counter, non_persistent_temp_slot,
+            CounterSlot, !CI),
+        acquire_temp_slot(slot_ticket, non_persistent_temp_slot,
+            TrailPtrSlot, !CI),
+        MaybeTrailSlots = yes(CounterSlot - TrailPtrSlot),
+        SaveTrailCode = from_list([
+            llds_instr(mark_ticket_stack(CounterSlot),
+                "save the ticket counter"),
+            llds_instr(store_ticket(TrailPtrSlot),
+                "save the trail pointer")
+        ])
+    ;
+        AddTrailOps = do_not_add_trail_ops,
+        MaybeTrailSlots = no,
+        SaveTrailCode = empty
+    ).
+
+:- pred maybe_restore_trail_info(maybe(pair(lval))::in,
+    llds_code::out, llds_code::out, code_info::in, code_info::out) is det.
+
+maybe_restore_trail_info(MaybeTrailSlots, CommitCode, RestoreCode, !CI) :-
+    (
+        MaybeTrailSlots = no,
+        CommitCode = empty,
+        RestoreCode = empty
+    ;
+        MaybeTrailSlots = yes(CounterSlot - TrailPtrSlot),
+        CommitCode = from_list([
+            llds_instr(reset_ticket(lval(TrailPtrSlot), reset_reason_commit),
+                "discard trail entries and restore trail ptr"),
+            llds_instr(prune_tickets_to(lval(CounterSlot)),
+                "restore ticket counter (but not high water mark)")
+        ]),
+        RestoreCode = from_list([
+            llds_instr(reset_ticket(lval(TrailPtrSlot), reset_reason_undo),
+                "apply trail entries and restore trail ptr"),
+            llds_instr(discard_ticket,
+                "restore ticket counter and high water mark")
+        ]),
+        release_temp_slot(CounterSlot, non_persistent_temp_slot, !CI),
+        release_temp_slot(TrailPtrSlot, non_persistent_temp_slot, !CI)
+    ).
+
+%---------------------------------------------------------------------------%
+
+:- pred clone_resume_point(resume_point_info::in,
+    resume_point_info::out, code_info::in, code_info::out) is det.
+
+clone_resume_point(ResumePoint0, ResumePoint, !CI) :-
+    (
+        ResumePoint0 = orig_only(_, _),
+        unexpected($module, $pred, "cloning orig_only resume point")
+    ;
+        ResumePoint0 = stack_only(Map1, _),
+        get_next_label(Label1, !CI),
+        Addr1 = code_label(Label1),
+        ResumePoint = stack_only(Map1, Addr1)
+    ;
+        ResumePoint0 = stack_and_orig(Map1, _, Map2, _),
+        get_next_label(Label1, !CI),
+        Addr1 = code_label(Label1),
+        get_next_label(Label2, !CI),
+        Addr2 = code_label(Label2),
+        ResumePoint = stack_and_orig(Map1, Addr1, Map2, Addr2)
+    ;
+        ResumePoint0 = orig_and_stack(Map1, _, Map2, _),
+        get_next_label(Label2, !CI),
+        Addr2 = code_label(Label2),
+        get_next_label(Label1, !CI),
+        Addr1 = code_label(Label1),
+        ResumePoint = stack_and_orig(Map2, Addr2, Map1, Addr1)
+    ).
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+    % Submodule to deal with liveness issues.
+
+    % The principles underlying this submodule of code_info.m are
+    % documented in the file compiler/notes/allocation.html.
+
+:- interface.
+
+:- pred add_forward_live_vars(set_of_progvar::in,
+    code_info::in, code_info::out) is det.
+
+:- pred get_known_variables(code_info::in, list(prog_var)::out) is det.
+
+:- pred variable_is_forward_live(code_info::in, prog_var::in) is semidet.
+
+:- pred make_vars_forward_dead(set_of_progvar::in,
+    code_info::in, code_info::out) is det.
+
+:- pred maybe_make_vars_forward_dead(set_of_progvar::in, bool::in,
+    code_info::in, code_info::out) is det.
+
+:- pred pickup_zombies(set_of_progvar::out,
+    code_info::in, code_info::out) is det.
+
+%---------------------------------------------------------------------------%
+
+:- implementation.
+
+:- pred rem_forward_live_vars(set_of_progvar::in,
+    code_info::in, code_info::out) is det.
+
+    % Make these variables appear magically live.
+    % We don't care where they are put.
+    %
+:- pred make_vars_forward_live(set_of_progvar::in,
+    code_info::in, code_info::out) is det.
+
+get_known_variables(CI, VarList) :-
+    get_forward_live_vars(CI, ForwardLiveVars),
+    ResumeVars = current_resume_point_vars(CI),
+    set_of_var.union(ForwardLiveVars, ResumeVars, Vars),
+    VarList = set_of_var.to_sorted_list(Vars).
+
+variable_is_forward_live(CI, Var) :-
+    get_forward_live_vars(CI, Liveness),
+    set_of_var.member(Liveness, Var).
+
+add_forward_live_vars(Births, !CI) :-
+    get_forward_live_vars(!.CI, Liveness0),
+    set_of_var.union(Liveness0, Births, Liveness),
+    set_forward_live_vars(Liveness, !CI).
+
+rem_forward_live_vars(Deaths, !CI) :-
+    get_forward_live_vars(!.CI, Liveness0),
+    set_of_var.difference(Liveness0, Deaths, Liveness),
+    set_forward_live_vars(Liveness, !CI).
+
+make_vars_forward_live(Vars, !CI) :-
+    get_stack_slots(!.CI, StackSlots),
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    VarList = set_of_var.to_sorted_list(Vars),
+    make_vars_forward_live_2(VarList, StackSlots, 1,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+:- pred make_vars_forward_live_2(list(prog_var)::in,
+    stack_slots::in, int::in, var_locn_info::in, var_locn_info::out)
+    is det.
+
+make_vars_forward_live_2([], _, _, !VarLocnInfo).
+make_vars_forward_live_2([Var | Vars], StackSlots, N0, !VarLocnInfo) :-
+    ( map.search(StackSlots, Var, Slot) ->
+        Lval = stack_slot_to_lval(Slot),
+        N1 = N0
+    ;
+        % reg_r is fine since we don't care where the variables are put.
+        RegType = reg_r,
+        find_unused_reg(!.VarLocnInfo, RegType, N0, N1),
+        Lval = reg(RegType, N1)
+    ),
+    var_locn_set_magic_var_location(Var, Lval, !VarLocnInfo),
+    make_vars_forward_live_2(Vars, StackSlots, N1, !VarLocnInfo).
+
+:- pred find_unused_reg(var_locn_info::in, reg_type::in, int::in, int::out)
+    is det.
+
+find_unused_reg(VLI, RegType, N0, N) :-
+    ( var_locn_lval_in_use(VLI, reg(RegType, N0)) ->
+        find_unused_reg(VLI, RegType, N0 + 1, N)
+    ;
+        N = N0
+    ).
+
+make_vars_forward_dead(Vars, !CI) :-
+    maybe_make_vars_forward_dead(Vars, yes, !CI).
+
+maybe_make_vars_forward_dead(Vars0, FirstTime, !CI) :-
+    ResumeVars = current_resume_point_vars(!.CI),
+    set_of_var.intersect(Vars0, ResumeVars, FlushVars),
+    get_zombies(!.CI, Zombies0),
+    set_of_var.union(Zombies0, FlushVars, Zombies),
+    set_zombies(Zombies, !CI),
+    set_of_var.difference(Vars0, Zombies, Vars),
+    VarList = set_of_var.to_sorted_list(Vars),
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    maybe_make_vars_forward_dead_2(VarList, FirstTime,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+:- pred maybe_make_vars_forward_dead_2(list(prog_var)::in, bool::in,
+    var_locn_info::in, var_locn_info::out) is det.
+
+maybe_make_vars_forward_dead_2([], _, !VLI).
+maybe_make_vars_forward_dead_2([Var | Vars], FirstTime, !VLI) :-
+    var_locn_var_becomes_dead(Var, FirstTime, !VLI),
+    maybe_make_vars_forward_dead_2(Vars, FirstTime, !VLI).
+
+pickup_zombies(Zombies, !CI) :-
+    get_zombies(!.CI, Zombies),
+    set_zombies(set_of_var.init, !CI).
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+    % Submodule for handling the saving and restoration
+    % of trail tickets, heap pointers, stack pointers etc.
+
+:- interface.
+
+:- pred save_hp(llds_code::out, lval::out,
+    code_info::in, code_info::out) is det.
+
+:- pred restore_hp(lval::in, llds_code::out) is det.
+
+:- pred release_hp(lval::in, code_info::in, code_info::out) is det.
+
+:- pred restore_and_release_hp(lval::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+:- pred maybe_save_hp(bool::in, llds_code::out, maybe(lval)::out,
+    code_info::in, code_info::out) is det.
+
+:- pred maybe_restore_hp(maybe(lval)::in, llds_code::out) is det.
+
+:- pred maybe_release_hp(maybe(lval)::in,
+    code_info::in, code_info::out) is det.
+
+:- pred maybe_restore_and_release_hp(maybe(lval)::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred save_ticket(llds_code::out, lval::out,
+    code_info::in, code_info::out) is det.
+
+:- pred reset_ticket(lval::in, reset_trail_reason::in, llds_code::out) is det.
+
+:- pred release_ticket(lval::in, code_info::in, code_info::out) is det.
+
+:- pred reset_and_prune_ticket(lval::in, reset_trail_reason::in,
+    llds_code::out) is det.
+
+:- pred reset_prune_and_release_ticket(lval::in, reset_trail_reason::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred reset_and_discard_ticket(lval::in, reset_trail_reason::in,
+    llds_code::out) is det.
+
+:- pred reset_discard_and_release_ticket(lval::in, reset_trail_reason::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred discard_and_release_ticket(lval::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+:- pred maybe_save_ticket(add_trail_ops::in, llds_code::out,
+    maybe(lval)::out, code_info::in, code_info::out) is det.
+
+:- pred maybe_reset_ticket(maybe(lval)::in, reset_trail_reason::in,
+    llds_code::out) is det.
+
+:- pred maybe_release_ticket(maybe(lval)::in,
+    code_info::in, code_info::out) is det.
+
+:- pred maybe_reset_and_prune_ticket(maybe(lval)::in,
+    reset_trail_reason::in, llds_code::out) is det.
+
+:- pred maybe_reset_prune_and_release_ticket(maybe(lval)::in,
+    reset_trail_reason::in, llds_code::out, code_info::in, code_info::out)
+    is det.
+
+:- pred maybe_reset_and_discard_ticket(maybe(lval)::in,
+    reset_trail_reason::in, llds_code::out) is det.
+
+:- pred maybe_reset_discard_and_release_ticket(maybe(lval)::in,
+    reset_trail_reason::in, llds_code::out, code_info::in, code_info::out)
+    is det.
+
+:- pred maybe_discard_and_release_ticket(maybe(lval)::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+    % Should we add trail ops to the code we generate for the goal with the
+    % given goal_info.  This will be 'no' unless we are in a trailing grade.
+    %
+:- func should_add_trail_ops(code_info, hlds_goal_info) = add_trail_ops.
+
+    % Should we add region ops to the code we generate for the goal with the
+    % given goal_info.  This will be 'no' unless we are in a rbmm grade.
+    %
+:- func should_add_region_ops(code_info, hlds_goal_info) = add_region_ops.
+
+%---------------------------------------------------------------------------%
+
+:- implementation.
+
+save_hp(Code, HpSlot, !CI) :-
+    acquire_temp_slot(slot_lval(hp), non_persistent_temp_slot, HpSlot, !CI),
+    Code = singleton(
+        llds_instr(mark_hp(HpSlot), "Save heap pointer")
+    ).
+
+restore_hp(HpSlot, Code) :-
+    Code = singleton(
+        llds_instr(restore_hp(lval(HpSlot)), "Restore heap pointer")
+    ).
+
+release_hp(HpSlot, !CI) :-
+    release_temp_slot(HpSlot, non_persistent_temp_slot, !CI).
+
+restore_and_release_hp(HpSlot, Code, !CI) :-
+    restore_hp(HpSlot, Code),
+    release_hp(HpSlot, !CI).
+
+%---------------------------------------------------------------------------%
+
+maybe_save_hp(Maybe, Code, MaybeHpSlot, !CI) :-
+    (
+        Maybe = yes,
+        save_hp(Code, HpSlot, !CI),
+        MaybeHpSlot = yes(HpSlot)
+    ;
+        Maybe = no,
+        Code = empty,
+        MaybeHpSlot = no
+    ).
+
+maybe_restore_hp(MaybeHpSlot, Code) :-
+    (
+        MaybeHpSlot = yes(HpSlot),
+        restore_hp(HpSlot, Code)
+    ;
+        MaybeHpSlot = no,
+        Code = empty
+    ).
+
+maybe_release_hp(MaybeHpSlot, !CI) :-
+    (
+        MaybeHpSlot = yes(HpSlot),
+        release_hp(HpSlot, !CI)
+    ;
+        MaybeHpSlot = no
+    ).
+
+maybe_restore_and_release_hp(MaybeHpSlot, Code, !CI) :-
+    (
+        MaybeHpSlot = yes(HpSlot),
+        restore_and_release_hp(HpSlot, Code, !CI)
+    ;
+        MaybeHpSlot = no,
+        Code = empty
+    ).
+
+%---------------------------------------------------------------------------%
+
+save_ticket(Code, TicketSlot, !CI) :-
+    acquire_temp_slot(slot_ticket, non_persistent_temp_slot, TicketSlot, !CI),
+    Code = singleton(
+        llds_instr(store_ticket(TicketSlot), "Save trail state")
+    ).
+
+reset_ticket(TicketSlot, Reason, Code) :-
+    Code = singleton(
+        llds_instr(reset_ticket(lval(TicketSlot), Reason), "Reset trail")
+    ).
+
+release_ticket(TicketSlot, !CI) :-
+    release_temp_slot(TicketSlot, non_persistent_temp_slot, !CI).
+
+reset_and_prune_ticket(TicketSlot, Reason, Code) :-
+    Code = from_list([
+        llds_instr(reset_ticket(lval(TicketSlot), Reason), "Restore trail"),
+        llds_instr(prune_ticket, "Prune ticket stack")
+    ]).
+
+reset_prune_and_release_ticket(TicketSlot, Reason, Code, !CI) :-
+    Code = from_list([
+        llds_instr(reset_ticket(lval(TicketSlot), Reason), "Release trail"),
+        llds_instr(prune_ticket, "Prune ticket stack")
+    ]),
+    release_temp_slot(TicketSlot, non_persistent_temp_slot, !CI).
+
+reset_and_discard_ticket(TicketSlot, Reason, Code) :-
+    Code = from_list([
+        llds_instr(reset_ticket(lval(TicketSlot), Reason), "Restore trail"),
+        llds_instr(discard_ticket, "Pop ticket stack")
+    ]).
+
+reset_discard_and_release_ticket(TicketSlot, Reason, Code, !CI) :-
+    Code = from_list([
+        llds_instr(reset_ticket(lval(TicketSlot), Reason), "Release trail"),
+        llds_instr(discard_ticket, "Pop ticket stack")
+    ]),
+    release_temp_slot(TicketSlot, non_persistent_temp_slot, !CI).
+
+discard_and_release_ticket(TicketSlot, Code, !CI) :-
+    Code = singleton(
+        llds_instr(discard_ticket, "Pop ticket stack")
+    ),
+    release_temp_slot(TicketSlot, non_persistent_temp_slot, !CI).
+
+%---------------------------------------------------------------------------%
+
+maybe_save_ticket(AddTrailOps, Code, MaybeTicketSlot, !CI) :-
+    (
+        AddTrailOps = add_trail_ops,
+        save_ticket(Code, TicketSlot, !CI),
+        MaybeTicketSlot = yes(TicketSlot)
+    ;
+        AddTrailOps = do_not_add_trail_ops,
+        Code = empty,
+        MaybeTicketSlot = no
+    ).
+
+maybe_reset_ticket(MaybeTicketSlot, Reason, Code) :-
+    (
+        MaybeTicketSlot = yes(TicketSlot),
+        reset_ticket(TicketSlot, Reason, Code)
+    ;
+        MaybeTicketSlot = no,
+        Code = empty
+    ).
+
+maybe_release_ticket(MaybeTicketSlot, !CI) :-
+    (
+        MaybeTicketSlot = yes(TicketSlot),
+        release_ticket(TicketSlot, !CI)
+    ;
+        MaybeTicketSlot = no
+    ).
+
+maybe_reset_and_prune_ticket(MaybeTicketSlot, Reason, Code) :-
+    (
+        MaybeTicketSlot = yes(TicketSlot),
+        reset_and_prune_ticket(TicketSlot, Reason, Code)
+    ;
+        MaybeTicketSlot = no,
+        Code = empty
+    ).
+
+maybe_reset_prune_and_release_ticket(MaybeTicketSlot, Reason,
+        Code, !CI) :-
+    (
+        MaybeTicketSlot = yes(TicketSlot),
+        reset_prune_and_release_ticket(TicketSlot, Reason,
+            Code, !CI)
+    ;
+        MaybeTicketSlot = no,
+        Code = empty
+    ).
+
+maybe_reset_and_discard_ticket(MaybeTicketSlot, Reason, Code) :-
+    (
+        MaybeTicketSlot = yes(TicketSlot),
+        reset_and_discard_ticket(TicketSlot, Reason, Code)
+    ;
+        MaybeTicketSlot = no,
+        Code = empty
+    ).
+
+maybe_reset_discard_and_release_ticket(MaybeTicketSlot, Reason,
+        Code, !CI) :-
+    (
+        MaybeTicketSlot = yes(TicketSlot),
+        reset_discard_and_release_ticket(TicketSlot, Reason,
+            Code, !CI)
+    ;
+        MaybeTicketSlot = no,
+        Code = empty
+    ).
+
+maybe_discard_and_release_ticket(MaybeTicketSlot, Code, !CI) :-
+    (
+        MaybeTicketSlot = yes(TicketSlot),
+        discard_and_release_ticket(TicketSlot, Code, !CI)
+    ;
+        MaybeTicketSlot = no,
+        Code = empty
+    ).
+
+    % XXX We will eventually need to make use of GoalInfo here.
+    %
+should_add_trail_ops(CodeInfo, _GoalInfo) = AddTrailOps :-
+    get_emit_trail_ops(CodeInfo, AddTrailOps).
+
+    % XXX We will eventually need to make use of GoalInfo here.
+    %
+should_add_region_ops(CodeInfo, _GoalInfo) = AddRegionOps :-
+    get_emit_region_ops(CodeInfo, AddRegionOps).
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+    % Submodule to deal with var_locn.
+
+    % Most of these procedures just forward to the var_locn module.
+    % See var_locn for documentation.
+
+:- interface.
+
+:- pred variable_locations(code_info::in,
+    map(prog_var, set(lval))::out) is det.
+
+:- pred set_var_location(prog_var::in, lval::in,
+    code_info::in, code_info::out) is det.
+
+:- pred assign_var_to_var(prog_var::in, prog_var::in,
+    code_info::in, code_info::out) is det.
+
+:- pred assign_lval_to_var(prog_var::in, lval::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+:- pred assign_const_to_var(prog_var::in, rval::in,
+    code_info::in, code_info::out) is det.
+
+:- pred assign_expr_to_var(prog_var::in, rval::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+:- pred reassign_mkword_hole_var(prog_var::in, tag::in, rval::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred assign_field_lval_expr_to_var(prog_var::in, list(lval)::in, rval::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+    % assign_cell_to_var(Var, ReserveWordAtStart, Ptag, MaybeRvals,
+    %   AllFilled, MaybeSize, FieldAddrs, TypeMsg, MayUseAtomic, Where,
+    %   Code, !CI).
+    %
+:- pred assign_cell_to_var(prog_var::in, bool::in, tag::in,
+    list(cell_arg)::in, how_to_construct::in, maybe(term_size_value)::in,
+    maybe(alloc_site_id)::in, may_use_atomic_alloc::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred save_reused_cell_fields(prog_var::in, lval::in, llds_code::out,
+    list(lval)::out, code_info::in, code_info::out) is det.
+
+:- pred place_var(prog_var::in, lval::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+:- pred produce_variable(prog_var::in, llds_code::out, rval::out,
+    code_info::in, code_info::out) is det.
+
+:- pred produce_variable_in_reg(prog_var::in, llds_code::out,
+    lval::out, code_info::in, code_info::out) is det.
+
+:- pred produce_variable_in_reg_or_stack(prog_var::in,
+    llds_code::out, lval::out, code_info::in, code_info::out) is det.
+
+:- pred materialize_vars_in_lval(lval::in, lval::out,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred acquire_reg_for_var(prog_var::in, reg_type::in, lval::out,
+    code_info::in, code_info::out) is det.
+
+:- pred acquire_reg_not_in_storemap(abs_store_map::in, reg_type::in, lval::out,
+    code_info::in, code_info::out) is det.
+
+:- pred acquire_reg(reg_type::in, lval::out,
+    code_info::in, code_info::out) is det.
+
+:- pred release_reg(lval::in, code_info::in, code_info::out) is det.
+
+:- pred reserve_r1(llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred clear_r1(llds_code::out, code_info::in, code_info::out) is det.
+
+:- type call_direction
+    --->    caller
+    ;       callee.
+
+    % Move variables to where they need to be at the time of the call:
+    %
+    % - The variables that need to be saved across the call (either because
+    %   they are forward live after the call or because they are protected
+    %   by an enclosing resumption point) will be saved on the stack.
+    %   Note that if the call cannot succeed and the trace level is none,
+    %   then no variables need to be saved across the call. (If the call
+    %   cannot succeed but the trace level is not none, then we still
+    %   save the usual variables on the stack to make them available
+    %   for up-level printing in the debugger.)
+    %
+    % - The input arguments will be moved to their registers.
+    %
+:- pred setup_call(hlds_goal_info::in, assoc_list(prog_var, arg_info)::in,
+    set(lval)::out, llds_code::out, code_info::in, code_info::out) is det.
+
+    % Move the output arguments of the current procedure to where
+    % they need to be at return.
+    %
+:- pred setup_return(assoc_list(prog_var, arg_info)::in,
+    set(lval)::out, llds_code::out, code_info::in, code_info::out) is det.
+
+:- pred lock_regs(int::in, int::in, assoc_list(prog_var, lval)::in,
+    code_info::in, code_info::out) is det.
+
+:- pred unlock_regs(code_info::in, code_info::out) is det.
+
+    % Record the fact that all the registers have been clobbered (as by a
+    % call). If the bool argument is true, then the call cannot return, and
+    % thus it is OK for this action to delete the last record of the state
+    % of a variable.
+    %
+:- pred clear_all_registers(bool::in, code_info::in, code_info::out) is det.
+
+:- pred clobber_regs(list(lval)::in, code_info::in, code_info::out) is det.
+
+:- pred save_variables(set_of_progvar::in, set(lval)::out, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+:- pred save_variables_on_stack(list(prog_var)::in, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+:- pred max_reg_in_use(code_info::in, int::out, int::out) is det.
+
+:- pred magically_put_var_in_unused_reg(prog_var::in,
+    code_info::in, code_info::out) is det.
+
+%---------------------------------------------------------------------------%
+
+:- implementation.
+
+variable_locations(CI, Lvals) :-
+    get_var_locn_info(CI, VarLocnInfo),
+    var_locn_get_var_locations(VarLocnInfo, Lvals).
+
+:- func rval_map_to_lval_map(prog_var, set(rval)) = set(lval).
+
+rval_map_to_lval_map(_Var, Rvals) =
+    set.filter_map(rval_is_lval, Rvals).
+
+:- func rval_is_lval(rval) = lval is semidet.
+
+rval_is_lval(lval(Lval)) = Lval.
+
+set_var_location(Var, Lval, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_check_and_set_magic_var_location(Var, Lval,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+assign_var_to_var(Var, AssignedVar, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_assign_var_to_var(Var, AssignedVar, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+assign_lval_to_var(Var, Lval, Code, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_static_cell_info(!.CI, StaticCellInfo),
+    get_module_info(!.CI, ModuleInfo),
+    var_locn_assign_lval_to_var(ModuleInfo, Var, Lval,
+        StaticCellInfo, Code, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+assign_const_to_var(Var, ConstRval, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_exprn_opts(!.CI, ExprnOpts),
+    var_locn_assign_const_to_var(ExprnOpts, Var, ConstRval,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+assign_expr_to_var(Var, Rval, Code, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    Lvals = lvals_in_rval(Rval),
+    (
+        Lvals = [],
+        var_locn_assign_expr_to_var(Var, Rval, Code,
+            VarLocnInfo0, VarLocnInfo)
+    ;
+        Lvals = [_ | _],
+        unexpected($module, $pred, "non-var lvals")
+    ),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+reassign_mkword_hole_var(Var, Ptag, Rval, Code, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    Lvals = lvals_in_rval(Rval),
+    (
+        Lvals = [],
+        var_locn_reassign_mkword_hole_var(Var, Ptag, Rval, Code,
+            VarLocnInfo0, VarLocnInfo)
+    ;
+        Lvals = [_ | _],
+        unexpected($module, $pred, "non-var lvals")
+    ),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+assign_field_lval_expr_to_var(Var, FieldLvals, Rval, Code, !CI) :-
+    (
+        FieldLvals = [field(MaybeTag, var(BaseVar), _) | RestFieldLvals],
+        list.all_true(is_var_field(MaybeTag, BaseVar), RestFieldLvals)
+    ->
+        (
+            Lvals = lvals_in_rval(Rval),
+            all [Lval] (
+                list.member(Lval, Lvals)
+            =>
+                list.member(Lval, FieldLvals)
+            )
+        ->
+            get_var_locn_info(!.CI, VarLocnInfo0),
+            var_locn_assign_field_lval_expr_to_var(Var, BaseVar, Rval, Code,
+                VarLocnInfo0, VarLocnInfo),
+            set_var_locn_info(VarLocnInfo, !CI)
+        ;
+            unexpected($module, $pred, "rval contains unexpected lval")
+        )
+    ;
+        unexpected($module, $pred,
+            "FieldLvals not all fields of the same base variable")
+    ).
+
+:- pred is_var_field(maybe(tag)::in, prog_var::in, lval::in) is semidet.
+
+is_var_field(MaybeTag, Var, field(MaybeTag, var(Var), _)).
+
+assign_cell_to_var(Var, ReserveWordAtStart, Ptag, CellArgs, HowToConstruct,
+        MaybeSize, MaybeAllocId, MayUseAtomic, Code, !CI) :-
+    get_next_label(Label, !CI),
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_static_cell_info(!.CI, StaticCellInfo0),
+    get_module_info(!.CI, ModuleInfo),
+    get_exprn_opts(!.CI, ExprnOpts),
+    var_locn_assign_cell_to_var(ModuleInfo, ExprnOpts, Var, ReserveWordAtStart,
+        Ptag, CellArgs, HowToConstruct, MaybeSize, MaybeAllocId, MayUseAtomic,
+        Label, Code, StaticCellInfo0, StaticCellInfo,
+        VarLocnInfo0, VarLocnInfo),
+    set_static_cell_info(StaticCellInfo, !CI),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+save_reused_cell_fields(Var, Lval, Code, Regs, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_module_info(!.CI, ModuleInfo),
+    var_locn_save_cell_fields(ModuleInfo, Var, Lval, Code, Regs,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+place_var(Var, Lval, Code, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_module_info(!.CI, ModuleInfo),
+    var_locn_place_var(ModuleInfo, Var, Lval, Code,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+:- pred pick_and_place_vars(assoc_list(prog_var, set(lval))::in,
+    set(lval)::out, llds_code::out, code_info::in, code_info::out) is det.
+
+pick_and_place_vars(VarLocSets, LiveLocs, Code, !CI) :-
+    pick_var_places(VarLocSets, VarLocs),
+    assoc_list.values(VarLocs, Locs),
+    set.list_to_set(Locs, LiveLocs),
+    place_vars(VarLocs, Code, !CI).
+
+:- pred pick_var_places(assoc_list(prog_var, set(lval))::in,
+    assoc_list(prog_var, lval)::out) is det.
+
+pick_var_places([], []).
+pick_var_places([Var - LvalSet | VarLvalSets], VarLvals) :-
+    pick_var_places(VarLvalSets, VarLvals0),
+    (
+        set.to_sorted_list(LvalSet, LvalList),
+        LvalList = [Lval | _]
+    ->
+        VarLvals = [Var - Lval | VarLvals0]
+    ;
+        VarLvals = VarLvals0
+    ).
+
+:- pred place_vars(assoc_list(prog_var, lval)::in,
+    llds_code::out, code_info::in, code_info::out) is det.
+
+place_vars(VarLocs, Code, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_module_info(!.CI, ModuleInfo),
+    var_locn_place_vars(ModuleInfo, VarLocs, Code, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+produce_variable(Var, Code, Rval, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_module_info(!.CI, ModuleInfo),
+    var_locn_produce_var(ModuleInfo, Var, Rval, Code,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+produce_variable_in_reg(Var, Code, Lval, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_module_info(!.CI, ModuleInfo),
+    var_locn_produce_var_in_reg(ModuleInfo, Var, Lval, Code,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+produce_variable_in_reg_or_stack(Var, Code, Lval, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_module_info(!.CI, ModuleInfo),
+    var_locn_produce_var_in_reg_or_stack(ModuleInfo, Var, Lval, Code,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+materialize_vars_in_lval(Lval0, Lval, Code, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_module_info(!.CI, ModuleInfo),
+    var_locn_materialize_vars_in_lval(ModuleInfo, Lval0, Lval, Code,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+acquire_reg_for_var(Var, RegType, Lval, !CI) :-
+    get_follow_var_map(!.CI, FollowVarsMap),
+    get_next_non_reserved(!.CI, RegType, NextNonReserved),
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    (
+        map.search(FollowVarsMap, Var, PrefLocn),
+        PrefLocn = abs_reg(RegType, PrefRegNum),
+        PrefRegNum >= 1
+    ->
+        var_locn_acquire_reg_prefer_given(RegType, PrefRegNum, Lval,
+            VarLocnInfo0, VarLocnInfo)
+    ;
+        % XXX We should only get a register if the map.search succeeded;
+        % otherwise we should put the var in its stack slot.
+        var_locn_acquire_reg_start_at_given(RegType, NextNonReserved, Lval,
+            VarLocnInfo0, VarLocnInfo)
+    ),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+acquire_reg_not_in_storemap(StoreMap, RegType, Lval, !CI) :-
+    map.foldl2(record_highest_used_reg, StoreMap, 0, HighestUsedRegR,
+        0, HighestUsedRegF),
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    (
+        RegType = reg_r,
+        NextRegNum = HighestUsedRegR + 1
+    ;
+        RegType = reg_f,
+        NextRegNum = HighestUsedRegF + 1
+    ),
+    var_locn_acquire_reg_start_at_given(RegType, NextRegNum, Lval,
+        VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+:- pred record_highest_used_reg(prog_var::in, abs_locn::in, int::in, int::out,
+    int::in, int::out) is det.
+
+record_highest_used_reg(_, AbsLocn, !HighestUsedRegR, !HighestUsedRegF) :-
+    (
+        AbsLocn = any_reg
+    ;
+        AbsLocn = abs_reg(reg_r, N),
+        int.max(N, !HighestUsedRegR)
+    ;
+        AbsLocn = abs_reg(reg_f, N),
+        int.max(N, !HighestUsedRegF)
+    ;
+        AbsLocn = abs_stackvar(_, _)
+    ;
+        AbsLocn = abs_parent_stackvar(_, _)
+    ;
+        AbsLocn = abs_framevar(_, _)
+    ).
+
+acquire_reg(Type, Lval, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_acquire_reg(Type, Lval, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+release_reg(Lval, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_release_reg(Lval, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+reserve_r1(Code, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    get_module_info(!.CI, ModuleInfo),
+    var_locn_clear_r1(ModuleInfo, Code, VarLocnInfo0, VarLocnInfo1),
+    var_locn_acquire_reg_require_given(reg(reg_r, 1),
+        VarLocnInfo1, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+clear_r1(empty, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_release_reg(reg(reg_r, 1), VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+%---------------------------------------------------------------------------%
+
+setup_return(VarArgInfos, OutLocs, Code, !CI) :-
+    setup_call_args(VarArgInfos, callee, OutLocs, Code, !CI).
+
+setup_call(GoalInfo, ArgInfos, LiveLocs, Code, !CI) :-
+    partition_args(ArgInfos, InArgInfos, OutArgInfos, _UnusedArgInfos),
+    assoc_list.keys(OutArgInfos, OutVars),
+    set.list_to_set(OutVars, OutVarSet),
+    Detism = goal_info_get_determinism(GoalInfo),
+    get_opt_no_return_calls(!.CI, OptNoReturnCalls),
+    get_module_info(!.CI, ModuleInfo),
+    VarTypes = get_var_types(!.CI),
+    (
+        Detism = detism_erroneous,
+        OptNoReturnCalls = yes
+    ->
+        RealStackVarLocs = [],
+        DummyStackVarLocs = []
+    ;
+        compute_forward_live_var_saves(!.CI, set_to_bitset(OutVarSet),
+            ForwardVarLocs),
+        CodeModel = goal_info_get_code_model(GoalInfo),
+        (
+            CodeModel = model_non,
+            % Save variables protected by the nearest resumption point on the
+            % stack.
+            % XXX This should be unnecessary; with the current setup, the code
+            % that established the resume point should have saved those
+            % variables on the stack already. However, later we should arrange
+            % things so that this saving of the resume vars on the stack
+            % is delayed until the first call after the setup of the
+            % resume point.
+            compute_resume_var_stack_locs(!.CI, ResumeVarLocs),
+            list.append(ResumeVarLocs, ForwardVarLocs, StackVarLocs)
+        ;
+            ( CodeModel = model_det
+            ; CodeModel = model_semi
+            ),
+            StackVarLocs = ForwardVarLocs
+        ),
+        list.filter(valid_stack_slot(ModuleInfo, VarTypes), StackVarLocs,
+            RealStackVarLocs, DummyStackVarLocs)
+    ),
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    list.filter(key_var_is_of_non_dummy_type(ModuleInfo, VarTypes),
+        InArgInfos, RealInArgInfos),
+    var_arg_info_to_lval(RealInArgInfos, RealInArgLocs),
+    AllRealLocs = RealStackVarLocs ++ RealInArgLocs,
+    AllLocs = DummyStackVarLocs ++ AllRealLocs,
+    var_locn_place_vars(ModuleInfo, AllLocs, Code, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI),
+    assoc_list.values(AllRealLocs, LiveLocList),
+    set.list_to_set(LiveLocList, LiveLocs).
+
+:- pred key_var_is_of_non_dummy_type(module_info::in, vartypes::in,
+    pair(prog_var, arg_info)::in) is semidet.
+
+key_var_is_of_non_dummy_type(ModuleInfo, VarTypes, Var - _ArgInfo) :-
+    var_is_of_non_dummy_type(ModuleInfo, VarTypes, Var).
+
+:- pred valid_stack_slot(module_info::in, vartypes::in,
+    pair(prog_var, lval)::in) is semidet.
+
+valid_stack_slot(ModuleInfo, VarTypes, Var - Lval) :-
+    lookup_var_type(VarTypes, Var, Type),
+    check_dummy_type(ModuleInfo, Type) = is_not_dummy_type,
+    (
+        ( Lval = stackvar(N)
+        ; Lval = parent_stackvar(N)
+        ; Lval = framevar(N)
+        ),
+        N < 0
+    ->
+        unexpected($module, $pred, "nondummy var in dummy stack slot")
+    ;
+        true
+    ).
+
+:- pred setup_call_args(assoc_list(prog_var, arg_info)::in,
+    call_direction::in, set(lval)::out, llds_code::out,
+    code_info::in, code_info::out) is det.
+
+setup_call_args(AllArgsInfos, Direction, LiveLocs, Code, !CI) :-
+    list.filter(call_arg_in_selected_dir(Direction), AllArgsInfos, ArgsInfos),
+    var_arg_info_to_lval(ArgsInfos, ArgsLocns),
+    get_module_info(!.CI, ModuleInfo),
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_place_vars(ModuleInfo, ArgsLocns, Code,
+        VarLocnInfo0, VarLocnInfo1),
+    set_var_locn_info(VarLocnInfo1, !CI),
+    assoc_list.values(ArgsLocns, LiveLocList),
+    set.list_to_set(LiveLocList, LiveLocs),
+    assoc_list.keys(ArgsLocns, ArgVars),
+    which_variables_are_forward_live(!.CI, ArgVars, set_of_var.init, DeadVars),
+    make_vars_forward_dead(DeadVars, !CI).
+
+:- pred var_arg_info_to_lval(assoc_list(prog_var, arg_info)::in,
+    assoc_list(prog_var, lval)::out) is det.
+
+var_arg_info_to_lval([], []).
+var_arg_info_to_lval([Var - ArgInfo | RestInfos], [Var - Lval | RestLvals]) :-
+    ArgInfo = arg_info(Loc, _Mode),
+    code_util.arg_loc_to_register(Loc, Lval),
+    var_arg_info_to_lval(RestInfos, RestLvals).
+
+:- pred which_variables_are_forward_live(code_info::in,
+    list(prog_var)::in, set_of_progvar::in, set_of_progvar::out) is det.
+
+which_variables_are_forward_live(_, [], !DeadVars).
+which_variables_are_forward_live(CI, [Var | Vars], !DeadVars) :-
+    ( variable_is_forward_live(CI, Var) ->
+        true
+    ;
+        set_of_var.insert(Var, !DeadVars)
+    ),
+    which_variables_are_forward_live(CI, Vars, !DeadVars).
+
+:- pred call_arg_in_selected_dir(call_direction::in,
+    pair(prog_var, arg_info)::in) is semidet.
+
+call_arg_in_selected_dir(Direction, _ - arg_info(_, Mode)) :-
+    (
+        Mode = top_in,
+        Direction = caller
+    ;
+        Mode = top_out,
+        Direction = callee
+    ).
+
+lock_regs(R, F, Exceptions, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_lock_regs(R, F, Exceptions, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+unlock_regs(!CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_unlock_regs(VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+clear_all_registers(OkToDeleteAny, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_clobber_all_regs(OkToDeleteAny, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+clobber_regs(Regs, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    var_locn_clobber_regs(Regs, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+save_variables(OutArgs, SavedLocs, Code, !CI) :-
+    compute_forward_live_var_saves(!.CI, OutArgs, VarLocs),
+    assoc_list.values(VarLocs, SavedLocList),
+    set.list_to_set(SavedLocList, SavedLocs),
+    place_vars(VarLocs, Code, !CI).
+
+save_variables_on_stack(Vars, Code, !CI) :-
+    list.map(associate_stack_slot(!.CI), Vars, VarLocs),
+    place_vars(VarLocs, Code, !CI).
+
+:- pred compute_forward_live_var_saves(code_info::in,
+    set_of_progvar::in, assoc_list(prog_var, lval)::out) is det.
+
+compute_forward_live_var_saves(CI, OutArgs, VarLocs) :-
+    get_known_variables(CI, Variables0),
+    Vars0 = set_of_var.list_to_set(Variables0),
+    TypeInfoLiveness = body_typeinfo_liveness(CI),
+    get_proc_info(CI, ProcInfo),
+    proc_info_get_vartypes(ProcInfo, VarTypes),
+    proc_info_get_rtti_varmaps(ProcInfo, RttiVarMaps),
+    maybe_complete_with_typeinfo_vars(Vars0, TypeInfoLiveness, VarTypes,
+        RttiVarMaps, Vars1),
+    set_of_var.difference(Vars1, OutArgs, Vars),
+    Variables = set_of_var.to_sorted_list(Vars),
+    list.map(associate_stack_slot(CI), Variables, VarLocs).
+
+:- pred associate_stack_slot(code_info::in, prog_var::in,
+    pair(prog_var, lval)::out) is det.
+
+associate_stack_slot(CI, Var, Var - Slot) :-
+    get_variable_slot(CI, Var, Slot).
+
+max_reg_in_use(CI, MaxR, MaxF) :-
+    get_var_locn_info(CI, VarLocnInfo),
+    var_locn_max_reg_in_use(VarLocnInfo, MaxR, MaxF).
+
+magically_put_var_in_unused_reg(Var, !CI) :-
+    get_var_locn_info(!.CI, VarLocnInfo0),
+    make_vars_forward_live_2([Var], map.init, 1, VarLocnInfo0, VarLocnInfo),
+    set_var_locn_info(VarLocnInfo, !CI).
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+    % Submodule for dealing with the recording of variable liveness
+    % information around calls.
+    %
+    % Value numbering needs to know what locations are live before calls;
+    % the garbage collector and the debugger need to know what locations
+    % are live containing what types of values after calls.
+
+:- interface.
+
+:- pred generate_call_vn_livevals(code_info::in, list(arg_loc)::in,
+    set_of_progvar::in, set(lval)::out) is det.
+
+:- pred generate_return_live_lvalues(code_info::in,
+    assoc_list(prog_var, arg_loc)::in, instmap::in, bool::in,
+    list(liveinfo)::out) is det.
+
+%---------------------------------------------------------------------------%
+
+:- implementation.
+
+generate_call_vn_livevals(CI, InputArgLocs, OutputArgs, LiveVals) :-
+    generate_call_stack_vn_livevals(CI, OutputArgs, StackLiveVals),
+    generate_input_var_vn(InputArgLocs, StackLiveVals, LiveVals).
+
+:- pred generate_call_stack_vn_livevals(code_info::in,
+    set_of_progvar::in, set(lval)::out) is det.
+
+generate_call_stack_vn_livevals(CI, OutputArgs, LiveVals) :-
+    get_known_variables(CI, KnownVarList0),
+    get_module_info(CI, ModuleInfo),
+    VarTypes = get_var_types(CI),
+    list.filter(var_is_of_non_dummy_type(ModuleInfo, VarTypes),
+        KnownVarList0, KnownVarList),
+    set_of_var.list_to_set(KnownVarList, KnownVars),
+    set_of_var.difference(KnownVars, OutputArgs, LiveVars),
+    set_of_var.to_sorted_list(LiveVars, LiveVarList),
+    generate_stack_var_vn(CI, LiveVarList, set.init, LiveVals1),
+    get_active_temps_data(CI, Temps),
+    generate_call_temp_vn(Temps, LiveVals1, LiveVals).
+
+:- pred generate_stack_var_vn(code_info::in, list(prog_var)::in,
+    set(lval)::in, set(lval)::out) is det.
+
+generate_stack_var_vn(_, [], !Vals).
+generate_stack_var_vn(CI, [V | Vs], !Vals) :-
+    get_variable_slot(CI, V, Lval),
+    set.insert(Lval, !Vals),
+    generate_stack_var_vn(CI, Vs, !Vals).
+
+:- pred generate_call_temp_vn(assoc_list(lval, slot_contents)::in,
+    set(lval)::in, set(lval)::out) is det.
+
+generate_call_temp_vn([], !Vals).
+generate_call_temp_vn([Lval - _ | Temps], !Vals) :-
+    set.insert(Lval, !Vals),
+    generate_call_temp_vn(Temps, !Vals).
+
+:- pred generate_input_var_vn(list(arg_loc)::in,
+    set(lval)::in, set(lval)::out) is det.
+
+generate_input_var_vn([], !Vals).
+generate_input_var_vn([InputArgLoc | InputArgLocs], !Vals) :-
+    code_util.arg_loc_to_register(InputArgLoc, Lval),
+    set.insert(Lval, !Vals),
+    generate_input_var_vn(InputArgLocs, !Vals).
+
+%---------------------------------------------------------------------------%
+
+generate_return_live_lvalues(CI, OutputArgLocs, ReturnInstMap,
+        OkToDeleteAny, LiveLvalues) :-
+    variable_locations(CI, VarLocs),
+    get_known_variables(CI, Vars0),
+    get_module_info(CI, ModuleInfo),
+    VarTypes = get_var_types(CI),
+    list.filter(var_is_of_non_dummy_type(ModuleInfo, VarTypes), Vars0, Vars),
+    get_active_temps_data(CI, Temps),
+    get_proc_info(CI, ProcInfo),
+    get_globals(CI, Globals),
+    continuation_info.generate_return_live_lvalues(OutputArgLocs,
+        ReturnInstMap, Vars, VarLocs, Temps, ProcInfo, ModuleInfo,
+        Globals, OkToDeleteAny, LiveLvalues).
+
+:- pred generate_resume_layout(label::in, resume_map::in,
+    code_info::in, code_info::out) is det.
+
+generate_resume_layout(Label, ResumeMap, !CI) :-
+    get_globals(!.CI, Globals),
+    globals.lookup_bool_option(Globals, agc_stack_layout, AgcStackLayout),
+    (
+        AgcStackLayout = yes,
+        get_active_temps_data(!.CI, Temps),
+        get_instmap(!.CI, InstMap),
+        get_proc_info(!.CI, ProcInfo),
+        get_module_info(!.CI, ModuleInfo),
+        continuation_info.generate_resume_layout(ResumeMap, Temps, InstMap,
+            ProcInfo, ModuleInfo, Layout),
+        add_resume_layout_for_label(Label, Layout, !CI)
+    ;
+        AgcStackLayout = no
+    ).
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+    % Submodule for managing stack slots.
+
+    % Det stack frames are organized as follows.
+    %
+    %       ... unused ...
+    %   sp ---> <first unused slot>
+    %       <space for local var 1>
+    %       ... local vars ...
+    %       <space for local var n>
+    %       <space for temporary 1>
+    %       ... temporaries ...
+    %       <space for temporary n>
+    %       <space for saved succip, if needed>
+    %
+    % The stack pointer points to the first free location at the
+    % top of the stack.
+    %
+    % `succip_is_used' determines whether we need a slot to
+    % hold the succip.
+    %
+    % Nondet stack frames also have the local variables above the
+    % temporaries, but contain several fixed slots on top, and the
+    % saved succip is stored in one of these.
+    %
+    % For both kinds of stack frames, the slots holding variables
+    % are allocated during the live_vars pass, while the slots holding
+    % temporaries are acquired (and if possible, released) on demand
+    % during code generation.
+
+:- interface.
+
+    % Returns the total stackslot count, but not including space for
+    % succip. This total can change in the future if this call is
+    % followed by further allocations of temp slots.
+    %
+:- pred get_total_stackslot_count(code_info::in, int::out) is det.
+
+    % If a stack slot is persistent, then the stack slot is not implicitly
+    % released when the code generator resets its location-dependent state,
+    % usually when entering the next arm of a disjunction, switch, etc.
+
+:- type temp_slot_persistence
+    --->    persistent_temp_slot
+    ;       non_persistent_temp_slot.
+
+    % Acquire a stack slot for storing a temporary. The slot_contents
+    % description is for accurate gc.
+    %
+:- pred acquire_temp_slot(slot_contents::in, temp_slot_persistence::in,
+    lval::out, code_info::in, code_info::out) is det.
+
+    % Release a stack slot acquired earlier for a temporary value.
+    % The persistence argument should match the acquire operation.
+    %
+:- pred release_temp_slot(lval::in, temp_slot_persistence::in,
+    code_info::in, code_info::out) is det.
+
+    % acquire_several_temp_slots(Items, Persistence, StackVars,
+    %   StackId, N, M, !Info):
+    %
+    % Perform an acquire_temp_slot operation for each element of the
+    % input list, all with the same persistence.
+    %
+    % The slots will be the ones from stack_slot_num_to_lval(StackId, N)
+    % consecutively to stack_slot_num_to_lval(StackId, M), with N < M.
+    % These will also be returned as StackVars.
+    %
+:- pred acquire_several_temp_slots(list(slot_contents)::in,
+    temp_slot_persistence::in, list(lval)::out,
+    main_stack::out, int::out, int::out, code_info::in, code_info::out) is det.
+
+    % Release the stack slots acquired by an earlier acquire_several_temp_slots
+    % operation. The persistence argument should match the acquire operation.
+    %
+:- pred release_several_temp_slots(list(lval)::in, temp_slot_persistence::in,
+    code_info::in, code_info::out) is det.
+
+    % Return the lval of the stack slot in which the given variable is stored.
+    % Aborts if the variable does not have a stack slot an assigned to it.
+    %
+:- pred get_variable_slot(code_info::in, prog_var::in, lval::out) is det.
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+:- implementation.
+
+acquire_temp_slot(Item, Persistence, StackVar, !CI) :-
+    get_temp_content_map(!.CI, TempContentMap0),
+    map.to_assoc_list(TempContentMap0, TempContentList),
+    get_temps_in_use(!.CI, TempsInUse0),
+    (
+        find_unused_slot_for_item(TempContentList, Item, TempsInUse0,
+            ChosenStackVar, _)
+    ->
+        StackVar = ChosenStackVar
+    ;
+        new_temp_slot(Item, StackVar, !CI)
+    ),
+    set.insert(StackVar, TempsInUse0, TempsInUse),
+    set_temps_in_use(TempsInUse, !CI),
+    (
+        Persistence = persistent_temp_slot,
+        get_persistent_temps(!.CI, PersistentTemps0),
+        set.insert(StackVar, PersistentTemps0, PersistentTemps),
+        set_persistent_temps(PersistentTemps, !CI)
+    ;
+        Persistence = non_persistent_temp_slot
+    ).
+
+acquire_several_temp_slots([], _, _, _, _, _, !CI) :-
+    % We could return an empty list of stack vars for StackVars, but there is
+    % nothing meaningful we can return for the other outputs.
+    unexpected($module, $pred, "[]").
+acquire_several_temp_slots([HeadItem | TailItems], Persistence, StackVars,
+        StackId, FirstSlotNum, LastSlotNum, !CI) :-
+    get_temp_content_map(!.CI, TempContentMap0),
+    map.to_assoc_list(TempContentMap0, TempContentList),
+    get_temps_in_use(!.CI, TempsInUse0),
+    (
+        find_unused_slots_for_items(TempContentList, HeadItem, TailItems,
+            TempsInUse0, StackVarsPrime,
+            StackIdPrime, FirstSlotNumPrime, LastSlotNumPrime)
+    ->
+        StackVars = StackVarsPrime,
+        StackId = StackIdPrime,
+        FirstSlotNum = FirstSlotNumPrime,
+        LastSlotNum = LastSlotNumPrime
+    ;
+        new_temp_slots([HeadItem | TailItems], StackVars,
+            StackId, FirstSlotNum, LastSlotNum, !CI)
+    ),
+    set.insert_list(StackVars, TempsInUse0, TempsInUse),
+    set_temps_in_use(TempsInUse, !CI),
+    (
+        Persistence = persistent_temp_slot,
+        get_persistent_temps(!.CI, PersistentTemps0),
+        set.insert_list(StackVars, PersistentTemps0, PersistentTemps),
+        set_persistent_temps(PersistentTemps, !CI)
+    ;
+        Persistence = non_persistent_temp_slot
+    ).
+
+:- pred new_temp_slot(slot_contents::in, lval::out,
+    code_info::in, code_info::out) is det.
+
+new_temp_slot(Item, StackVar, !CI) :-
+    get_var_slot_count(!.CI, VarSlotCount),
+    get_max_temp_slot_count(!.CI, TempSlotCount0),
+    TempSlotCount = TempSlotCount0 + 1,
+    SlotNum = VarSlotCount + TempSlotCount,
+    CodeModel = get_proc_model(!.CI),
+    StackId = code_model_to_main_stack(CodeModel),
+    StackVar = stack_slot_num_to_lval(StackId, SlotNum),
+    set_max_temp_slot_count(TempSlotCount, !CI),
+
+    get_temp_content_map(!.CI, TempContentMap0),
+    map.det_insert(StackVar, Item, TempContentMap0, TempContentMap),
+    set_temp_content_map(TempContentMap, !CI).
+
+:- pred new_temp_slots(list(slot_contents)::in, list(lval)::out,
+    main_stack::out, int::out, int::out, code_info::in, code_info::out) is det.
+
+new_temp_slots(Items, StackVars, StackId, FirstSlotNum, LastSlotNum, !CI) :-
+    get_var_slot_count(!.CI, VarSlotCount),
+    get_max_temp_slot_count(!.CI, TempSlotCount0),
+    FirstSlotNum = VarSlotCount + TempSlotCount0 + 1,
+    CodeModel = get_proc_model(!.CI),
+    StackId = code_model_to_main_stack(CodeModel),
+    get_temp_content_map(!.CI, TempContentMap0),
+    record_new_temp_slots(Items, StackId, FirstSlotNum, FirstUnusedSlotNum,
+        TempSlotCount0, TempSlotCount, TempContentMap0, TempContentMap,
+        StackVars),
+    LastSlotNum = FirstUnusedSlotNum - 1,
+    set_max_temp_slot_count(TempSlotCount, !CI),
+    set_temp_content_map(TempContentMap, !CI).
+
+:- pred record_new_temp_slots(list(slot_contents)::in,
+    main_stack::in, int::in, int::out, int::in, int::out,
+    map(lval, slot_contents)::in, map(lval, slot_contents)::out,
+    list(lval)::out) is det.
+
+record_new_temp_slots([], _, !CurSlotNum, !TempSlotCount, !TempContentMap, []).
+record_new_temp_slots([Item | Items], StackId, !CurSlotNum,
+        !TempSlotCount, !TempContentMap, [StackVar | StackVars]) :-
+    StackVar = stack_slot_num_to_lval(StackId, !.CurSlotNum),
+    map.det_insert(StackVar, Item, !TempContentMap),
+    !:CurSlotNum = !.CurSlotNum + 1,
+    !:TempSlotCount = !.TempSlotCount + 1,
+    record_new_temp_slots(Items, StackId, !CurSlotNum,
+        !TempSlotCount, !TempContentMap, StackVars).
+
+:- pred find_unused_slot_for_item(assoc_list(lval, slot_contents)::in,
+    slot_contents::in, set(lval)::in, lval::out,
+    assoc_list(lval, slot_contents)::out) is semidet.
+
+find_unused_slot_for_item([Head | Tail], Item, TempsInUse,
+        ChosenStackVar, Remainder) :-
+    Head = HeadStackVar - HeadSlotType,
+    (
+        HeadSlotType = Item,
+        \+ set.member(HeadStackVar, TempsInUse)
+    ->
+        ChosenStackVar = HeadStackVar,
+        Remainder = Tail
+    ;
+        find_unused_slot_for_item(Tail, Item, TempsInUse,
+            ChosenStackVar, Remainder)
+    ).
+
+:- pred find_unused_slots_for_items(assoc_list(lval, slot_contents)::in,
+    slot_contents::in, list(slot_contents)::in, set(lval)::in, list(lval)::out,
+    main_stack::out, int::out, int::out) is semidet.
+
+find_unused_slots_for_items([Head | Tail], HeadItem, TailItems, TempsInUse,
+        ChosenStackVars, StackId, FirstSlotNum, LastSlotNum) :-
+    (
+        find_unused_slot_for_item([Head | Tail], HeadItem, TempsInUse,
+            ChosenHeadStackVar, Remainder),
+        ( ChosenHeadStackVar = stackvar(N) ->
+            StackId0 = det_stack,
+            FirstSlotNum0 = N
+        ; ChosenHeadStackVar = framevar(N) ->
+            StackId0 = nondet_stack,
+            FirstSlotNum0 = N
+        ;
+            unexpected($module, $pred, "not stackvar or framevar")
+        ),
+        StackId1 = StackId0,
+        FirstSlotNum1 = FirstSlotNum0,
+        find_next_slots_for_items(Remainder, TailItems, TempsInUse,
+            ChosenTailStackVars, StackId1, FirstSlotNum1, LastSlotNum1)
+    ->
+        ChosenStackVars = [ChosenHeadStackVar | ChosenTailStackVars],
+        StackId = StackId1,
+        FirstSlotNum = FirstSlotNum1,
+        LastSlotNum = LastSlotNum1
+    ;
+        find_unused_slots_for_items(Tail, HeadItem, TailItems, TempsInUse,
+            ChosenStackVars, StackId, FirstSlotNum, LastSlotNum)
+    ).
+
+:- pred find_next_slots_for_items(assoc_list(lval, slot_contents)::in,
+    list(slot_contents)::in, set(lval)::in, list(lval)::out,
+    main_stack::in, int::in, int::out) is semidet.
+
+find_next_slots_for_items([], [], _, [], _, !SlotNum).
+find_next_slots_for_items([Head | Tail], [HeadItem | TailItems], TempsInUse,
+        [HeadStackVar | TailStackVars], StackId, !SlotNum) :-
+    Head = HeadStackVar - HeadSlotType,
+    !:SlotNum = !.SlotNum + 1,
+    HeadStackVar = stack_slot_num_to_lval(StackId, !.SlotNum),
+    HeadSlotType = HeadItem,
+    \+ set.member(HeadStackVar, TempsInUse),
+    find_next_slots_for_items(Tail, TailItems, TempsInUse,
+        TailStackVars, StackId, !SlotNum).
+
+release_temp_slot(StackVar, Persistence, !CI) :-
+    get_temps_in_use(!.CI, TempsInUse0),
+    set.delete(StackVar, TempsInUse0, TempsInUse),
+    set_temps_in_use(TempsInUse, !CI),
+
+    get_persistent_temps(!.CI, PersistentTemps0),
+    set.is_member(StackVar, PersistentTemps0, IsInPersistentTemps0),
+    (
+        Persistence = persistent_temp_slot,
+        expect(unify(IsInPersistentTemps0, yes),
+            $module, $pred, "released stack slot should be persistent"),
+        set.delete(StackVar, PersistentTemps0, PersistentTemps),
+        set_persistent_temps(PersistentTemps, !CI)
+    ;
+        Persistence = non_persistent_temp_slot,
+        expect(unify(IsInPersistentTemps0, no),
+            $module, $pred, "released stack slot should not be persistent")
+    ).
+
+release_several_temp_slots([], _Persistence, !CI).
+release_several_temp_slots([StackVar | StackVars], Persistence, !CI) :-
+    release_temp_slot(StackVar, Persistence, !CI),
+    release_several_temp_slots(StackVars, Persistence, !CI).
+
+%---------------------------------------------------------------------------%
+
+get_variable_slot(CI, Var, Slot) :-
+    get_stack_slots(CI, StackSlots),
+    ( map.search(StackSlots, Var, SlotLocn) ->
+        Slot = stack_slot_to_lval(SlotLocn)
+    ;
+        Name = variable_name(CI, Var),
+        term.var_to_int(Var, Num),
+        string.int_to_string(Num, NumStr),
+        Str = "variable `" ++ Name ++ "' " ++ "(" ++ NumStr ++ ") not found",
+        unexpected($module, $pred, Str)
+    ).
+
+get_total_stackslot_count(CI, NumSlots) :-
+    get_var_slot_count(CI, SlotsForVars),
+    get_max_temp_slot_count(CI, SlotsForTemps),
+    NumSlots = SlotsForVars + SlotsForTemps.
+
+:- pred max_var_slot(stack_slots::in, int::out) is det.
+
+max_var_slot(StackSlots, SlotCount) :-
+    map.values(StackSlots, StackSlotList),
+    max_var_slot_2(StackSlotList, 0, SlotCount).
+
+:- pred max_var_slot_2(list(stack_slot)::in, int::in, int::out) is det.
+
+max_var_slot_2([], !Max).
+max_var_slot_2([L | Ls], !Max) :-
+    (
+        L = det_slot(N, Width)
+    ;
+        L = parent_det_slot(N, Width)
+    ;
+        L = nondet_slot(N, Width)
+    ),
+    (
+        Width = single_width,
+        int.max(N, !Max)
+    ;
+        Width = double_width,
+        int.max(N + 1, !Max)
+    ),
+    max_var_slot_2(Ls, !Max).
+
+%---------------------------------------------------------------------------%
+
+    % Submodule for debugging the code generator itself.
+
+:- interface.
+
+    % Should we trace the operation of the code generator.
+    %
+:- pred should_trace_code_gen(code_info::in) is semidet.
+
+:- type code_info_component
+    --->    cic_forward_live_vars
+    ;       cic_zombies
+    ;       cic_temps_in_use
+    ;       cic_par_conj_depth.
+
+    % Print the selected parts of the code_info.
+    %
+    % If you need to print a part that is not currently selectable, make it
+    % selectable.
+    %
+:- pred output_code_info(list(code_info_component)::in, code_info::in,
+    io::di, io::uo) is det.
+
+:- implementation.
+
+should_trace_code_gen(CI) :-
+    code_info.get_pred_id(CI, PredId),
+    pred_id_to_int(PredId, PredIdInt),
+    code_info.get_module_info(CI, ModuleInfo),
+    module_info_get_globals(ModuleInfo, Globals),
+    globals.lookup_int_option(Globals, debug_code_gen_pred_id, DebugPredIdInt),
+    PredIdInt = DebugPredIdInt.
+
+output_code_info(Components, CI, !IO) :-
+    CI = code_info(Static, LocDep, _Persistent),
+    VarSet = Static ^ cis_varset,
+    LocDep = code_info_loc_dep(ForwardLiveVars, _InstMap, Zombies,
+        _VarLocnInfo, TempsInUse, _FailInfo, ParConjDepth),
+    ( list.member(cic_forward_live_vars, Components) ->
+        io.write_string("forward live vars: ", !IO),
+        mercury_output_vars(VarSet, yes,
+            set_of_var.to_sorted_list(ForwardLiveVars), !IO),
+        io.nl(!IO)
+    ;
+        true
+    ),
+    ( list.member(cic_zombies, Components) ->
+        io.write_string("zombies: ", !IO),
+        mercury_output_vars(VarSet, yes,
+            set_of_var.to_sorted_list(Zombies), !IO),
+        io.nl(!IO)
+    ;
+        true
+    ),
+    ( list.member(cic_temps_in_use, Components) ->
+        io.write_string("temps_in_use: ", !IO),
+        io.write_string(dump_lvals(no, set.to_sorted_list(TempsInUse)), !IO),
+        io.nl(!IO)
+    ;
+        true
+    ),
+    ( list.member(cic_par_conj_depth, Components) ->
+        io.format("par_conj_depth: %d\n", [i(ParConjDepth)], !IO)
+    ;
+        true
+    ).
+
+:- pred output_resume_map(prog_varset::in, map(prog_var, set(lval))::in,
+    io::di, io::uo) is det.
+
+output_resume_map(VarSet, ResumeMap, !IO) :-
+    map.to_assoc_list(ResumeMap, ResumeAssocList),
+    list.foldl(output_resume_map_element(VarSet), ResumeAssocList, !IO).
+
+:- pred output_resume_map_element(prog_varset::in,
+    pair(prog_var, set(lval))::in, io::di, io::uo) is det.
+
+output_resume_map_element(VarSet, Var - LvalSet, !IO) :-
+    io.write_string(describe_var(VarSet, Var), !IO),
+    io.write_string(": ", !IO),
+    Lvals = set.to_sorted_list(LvalSet),
+    LvalDescs = list.map(dump_lval(no), Lvals),
+    SpaceLvalDescs = list.map(string.append(" "), LvalDescs),
+    io.write_string(string.append_list(SpaceLvalDescs), !IO),
+    io.nl(!IO).
+
+%---------------------------------------------------------------------------%
+:- end_module ll_backend.code_info.
+%---------------------------------------------------------------------------%
diff --git a/samples/Mercury/expr.moo b/samples/Mercury/expr.moo
new file mode 100644
index 00000000..30a140ab
--- /dev/null
+++ b/samples/Mercury/expr.moo
@@ -0,0 +1,72 @@
+:- module expr.
+
+:- interface.
+
+:- import_module char, int, list.
+
+:- type token
+	--->	('+')
+	;	('-')
+	;	('*')
+	;	('/')
+	;	num(int)
+	;	('(')
+	;	(')')
+	;	eof
+	.
+
+:- parse(exprn/1, token, eof, xx, in, out).
+
+:- pred scan(list(char), list(token)).
+:- mode scan(in, out) is det.
+
+:- implementation.
+
+:- import_module string, require.
+
+:- rule exprn(int).
+exprn(Num)	--->	exprn(A), [+], term(B), { Num = A + B }.
+exprn(Num)	--->	exprn(A), [-], term(B), { Num = A - B }.
+exprn(Num)	--->	term(Num).
+
+:- rule term(int).
+term(Num)	--->	term(A), [*], factor(B), { Num = A * B }.
+term(Num)	--->	term(A), [/], factor(B), { Num = A // B }.
+term(Num)	--->	factor(Num).
+
+:- rule factor(int).
+factor(Num)	--->	['('], exprn(Num), [')'].
+factor(Num)	--->	[num(Num)].
+
+scan(Chars, Toks) :-
+	scan(Chars, [], Toks0),
+	list__reverse(Toks0, Toks).
+
+:- pred scan(list(char), list(token), list(token)).
+:- mode scan(in, in, out) is det.
+
+scan([], Toks, [eof|Toks]).
+scan([C|Cs], Toks0, Toks) :-
+	( char__is_whitespace(C) ->
+		scan(Cs, Toks0, Toks)
+	; char__is_digit(C) ->
+		takewhile(char__is_digit, [C|Cs], Digits, Rest),
+		string__from_char_list(Digits, NumStr),
+		Num = string__det_to_int(NumStr),
+		scan(Rest, [num(Num)|Toks0], Toks)
+	; C = ('+') ->
+		scan(Cs, ['+'|Toks0], Toks)
+	; C = ('-') ->
+		scan(Cs, ['-'|Toks0], Toks)
+	; C = ('*') ->
+		scan(Cs, ['*'|Toks0], Toks)
+	; C = ('/') ->
+		scan(Cs, ['/'|Toks0], Toks)
+	; C = ('(') ->
+		scan(Cs, ['('|Toks0], Toks)
+	; C = (')') ->
+		scan(Cs, [')'|Toks0], Toks)
+	;
+		error("expr: syntax error in input")
+	).
+
diff --git a/samples/Mercury/hello.m b/samples/Mercury/hello.m
new file mode 100644
index 00000000..c73f65ca
--- /dev/null
+++ b/samples/Mercury/hello.m
@@ -0,0 +1,14 @@
+% "Hello World" in Mercury.
+
+% This source file is hereby placed in the public domain.  -fjh (the author).
+
+:- module hello.
+:- interface.
+:- import_module io.
+
+:- pred main(io::di, io::uo) is det.
+
+:- implementation.
+
+main(!IO) :-
+	io.write_string("Hello, world\n", !IO).
diff --git a/samples/Mercury/options.m b/samples/Mercury/options.m
new file mode 100644
index 00000000..ceee077c
--- /dev/null
+++ b/samples/Mercury/options.m
@@ -0,0 +1,5884 @@
+%-----------------------------------------------------------------------------%
+% vim: ft=mercury ts=4 sw=4 et
+%-----------------------------------------------------------------------------%
+% Copyright (C) 1994-2012 The University of Melbourne.
+% This file may only be copied under the terms of the GNU General
+% Public License - see the file COPYING in the Mercury distribution.
+%-----------------------------------------------------------------------------%
+%
+% File: options.m.
+% Main author: fjh.
+%
+% This defines the stuff necessary so that getopt_io.m can parse the
+% command-line options.
+%
+% IMPORTANT NOTE: any changes to the options should be reflected in both the
+% help message produced below, and in the Mercury User's Guide
+% (../doc/user_guide.texi).
+%
+%-----------------------------------------------------------------------------%
+
+:- module libs.options.
+:- interface.
+
+:- import_module char.
+:- import_module getopt_io.
+:- import_module io.
+:- import_module set.
+
+%-----------------------------------------------------------------------------%
+
+:- pred short_option(char::in, option::out) is semidet.
+:- pred long_option(string::in, option::out) is semidet.
+:- pred option_defaults(option::out, option_data::out) is nondet.
+
+    % special_handler(Option, ValueForThatOption, OptionTableIn,
+    %   MaybeOptionTableOut):
+    %
+    % This predicate is invoked whenever getopt finds an option
+    % (long or short) designated as special, with special_data holding
+    % the argument of the option (if any). The predicate can change the
+    % option table in arbitrary ways in the course of handling the option,
+    % or it can return an error message.
+    % The canonical examples of special options are -O options in
+    % compilers, which set many other options at once.
+    % The MaybeOptionTableOut may either be ok(OptionTableOut), or it may
+    % be error(ErrorString).
+    %
+:- pred special_handler(option::in, special_data::in, option_table::in,
+    maybe_option_table::out) is semidet.
+
+    % Return the set of options which are inconsequential as far as the
+    % `--track-flags' option is concerned.  That is, adding or removing such
+    % an option to a module should not force the module to be recompiled.
+    %
+:- pred inconsequential_options(set(option)::out) is det.
+
+:- pred options_help(io::di, io::uo) is det.
+
+:- type option_table == option_table(option).
+:- type maybe_option_table == maybe_option_table(option).
+
+    % Add a directory to search for Mercury libraries. This
+    % adds `--search-directory', `--c-include-directory',
+    % `--erlang-include-directory',
+    % `--library-directory' and `--init-file-directory' options.
+    %
+:- func option_table_add_mercury_library_directory(option_table, string)
+    = option_table.
+
+    % Add a directory using all of the
+    % `--search-directory', `--intermod-directory',
+    % `--library-directory', `--init-file-directory' and
+    % `--c-include-directory', `--erlang-include-directory'
+    % options.
+    %
+:- func option_table_add_search_library_files_directory(option_table,
+    string) = option_table.
+
+    % Quote an argument to a shell command.
+    %
+:- func quote_arg(string) = string.
+
+    % NOTE: ALL OPTIONS SHOULD BE DOCUMENTED!
+    %
+    % Officially supported options should be documented both in the
+    % help message output by options_help/2, and also in the
+    % "invocation" chapter of doc/user_guide.texi.
+    %
+    % Options which are not officially supported (e.g. those used
+    % internally by the Mercury implementation, those which are not
+    % sufficiently useful to be worth mentioning in the User Guide,
+    % or options for experimental features that are not yet stable
+    % enough to be officially supported should still be documented.
+    % The documentation can go either next to the option definition
+    % here, or as commented-out code in the appropriate subroutine
+    % of options_help/2.
+:- type option
+
+    % Warning options
+    --->    inhibit_warnings
+    ;       inhibit_accumulator_warnings
+    ;       halt_at_warn
+    ;       halt_at_syntax_errors
+    ;       halt_at_auto_parallel_failure
+    ;       warn_singleton_vars
+    ;       warn_overlapping_scopes
+    ;       warn_det_decls_too_lax
+    ;       warn_inferred_erroneous
+    ;       warn_nothing_exported
+    ;       warn_unused_args
+    ;       warn_interface_imports
+    ;       warn_missing_opt_files
+    ;       warn_missing_trans_opt_files
+    ;       warn_missing_trans_opt_deps
+    ;       warn_non_contiguous_clauses
+    ;       warn_non_contiguous_foreign_procs
+    ;       warn_non_stratification
+    ;       warn_unification_cannot_succeed
+    ;       warn_simple_code
+    ;       warn_duplicate_calls
+    ;       warn_missing_module_name
+    ;       warn_wrong_module_name
+    ;       warn_smart_recompilation
+    ;       warn_undefined_options_variables
+    ;       warn_non_tail_recursion
+    ;       warn_target_code
+    ;       warn_up_to_date
+    ;       warn_stubs
+    ;       warn_dead_procs
+    ;       warn_table_with_inline
+    ;       warn_non_term_special_preds
+    ;       warn_known_bad_format_calls
+    ;       warn_unknown_format_calls
+    ;       warn_obsolete
+    ;       warn_insts_without_matching_type
+    ;       warn_unused_imports
+    ;       inform_ite_instead_of_switch
+    ;       warn_unresolved_polymorphism
+    ;       warn_suspicious_foreign_procs
+    ;       warn_state_var_shadowing
+    ;       inform_inferred
+    ;       inform_inferred_types
+    ;       inform_inferred_modes
+
+    % Verbosity options
+    ;       verbose
+    ;       very_verbose
+    ;       verbose_errors
+    ;       verbose_recompilation
+    ;       find_all_recompilation_reasons
+    ;       verbose_make
+    ;       verbose_commands
+    ;       output_compile_error_lines
+    ;       report_cmd_line_args
+    ;       report_cmd_line_args_in_doterr
+    ;       statistics
+    ;       detailed_statistics
+    ;       proc_size_statistics
+    ;       debug_types
+    ;       debug_modes
+    ;       debug_modes_statistics
+    ;       debug_modes_minimal
+    ;       debug_modes_verbose
+    ;       debug_modes_pred_id
+    ;       debug_dep_par_conj
+    ;       debug_det
+    ;       debug_code_gen_pred_id
+    ;       debug_opt
+    ;       debug_term          % term = constraint termination analysis
+    ;       debug_opt_pred_id
+    ;       debug_opt_pred_name
+    ;       debug_pd            % pd = partial deduction/deforestation
+    ;       debug_il_asm        % il_asm = IL generation via asm
+    ;       debug_liveness
+    ;       debug_stack_opt
+    ;       debug_make
+    ;       debug_closure
+    ;       debug_trail_usage
+    ;       debug_mode_constraints
+    ;       debug_intermodule_analysis
+    ;       debug_mm_tabling_analysis
+    ;       debug_indirect_reuse
+    ;       debug_type_rep
+
+    % Output options
+    ;       make_short_interface
+    ;       make_interface
+    ;       make_private_interface
+    ;       make_optimization_interface
+    ;       make_transitive_opt_interface
+    ;       make_analysis_registry
+    ;       make_xml_documentation
+    ;       generate_source_file_mapping
+    ;       generate_dependency_file
+    ;       generate_dependencies
+    ;       generate_module_order
+    ;       generate_standalone_interface
+    ;       convert_to_mercury
+    ;       typecheck_only
+    ;       errorcheck_only
+    ;       target_code_only
+    ;       compile_only
+    ;       compile_to_shared_lib
+    ;       output_grade_string
+    ;       output_link_command
+    ;       output_shared_lib_link_command
+    ;       output_libgrades
+    ;       output_cc
+    ;       output_c_compiler_type
+    ;       output_csharp_compiler_type
+    ;       output_cflags
+    ;       output_library_link_flags
+    ;       output_grade_defines
+    ;       output_c_include_directory_flags
+
+    % Auxiliary output options
+    ;       smart_recompilation
+            % Even if this option is set to `yes', smart recompilation may
+            % have been disabled with io_set_disable_smart_recompilation.
+            % Before using the value of this option, call
+            % io_get_disable_smart_recompilation to see whether this
+            % has been done.
+
+    ;       generate_item_version_numbers
+            % This option is used to control output of version numbers
+            % in interface files. It is implied by --smart-recompilation,
+            % and cannot be set explicitly by the user.
+
+            % Even if this option is set to `yes', version numbers may have
+            % been disabled with io_set_disable_generate_item_version_numbers.
+            % Before using the value of this option, call
+            % io_get_disable_generate_item_version_numbers to see whether this
+            % has been done.
+
+    ;       generate_mmc_make_module_dependencies
+    ;       assume_gmake
+    ;       trace_level
+    ;       trace_optimized
+    ;       trace_prof
+    ;       trace_table_io
+    ;       trace_table_io_only_retry
+    ;       trace_table_io_states
+    ;       trace_table_io_require
+    ;       trace_table_io_all
+    ;       trace_goal_flags
+    ;       prof_optimized
+    ;       exec_trace_tail_rec
+    ;       suppress_trace
+    ;       force_disable_tracing
+            % Force no tracing, even in .debug grades. This is used to turn off
+            % tracing in the browser directory while still allowing the browser
+            % library to be linked in with an executable compiled in a .debug
+            % grade.
+    ;       delay_death
+    ;       delay_death_max_vars
+
+    ;       stack_trace_higher_order
+    ;       force_disable_ssdebug
+    ;       generate_bytecode
+    ;       line_numbers
+    ;       auto_comments
+    ;       frameopt_comments
+    ;       max_error_line_width
+    ;       show_dependency_graph
+    ;       imports_graph
+    ;       dump_trace_counts
+    ;       dump_hlds
+    ;       dump_hlds_pred_id
+    ;       dump_hlds_pred_name
+    ;       dump_hlds_alias
+    ;       dump_hlds_options
+    ;       dump_hlds_inst_limit
+    ;       dump_hlds_file_suffix
+    ;       dump_same_hlds
+    ;       dump_mlds
+    ;       verbose_dump_mlds
+    ;       mode_constraints
+    ;       simple_mode_constraints
+    ;       prop_mode_constraints
+    ;       benchmark_modes
+    ;       benchmark_modes_repeat
+    ;       sign_assembly
+    ;       separate_assemblies
+
+    % Language semantics options
+    ;       reorder_conj
+    ;       reorder_disj
+    ;       fully_strict
+    ;       strict_sequential
+    ;       allow_stubs
+    ;       infer_types
+    ;       infer_modes
+    ;       infer_det
+    ;       infer_all
+    ;       type_inference_iteration_limit
+    ;       mode_inference_iteration_limit
+    ;       event_set_file_name
+
+    % Compilation Model options
+    ;       grade
+
+    % Target selection options
+    ;       target
+    ;       il                  % target il
+    ;       il_only             % target il + target_code_only
+    ;       compile_to_c        % target c + target_code_only
+    ;       java                % target java
+    ;       java_only           % target java + target_code_only
+    ;       csharp              % target csharp
+    ;       csharp_only         % target csharp + target_code_only
+    % XXX The following options need to be documented.
+    ;       x86_64              % target x86_64
+    ;       x86_64_only         % target x86_64 + target_code_only
+    ;       erlang              % target erlang
+    ;       erlang_only         % target erlang + target_code_only
+
+    % Compilation model options for optional features:
+
+    % (a) Debugging
+    % For documentation of the exec_trace and decl_debug options, see the
+    % documentation for MR_EXEC_TRACE and MR_DECL_DEBUG in
+    % runtime/mercury_conf_param.h.
+    ;       exec_trace
+    ;       decl_debug
+
+    % (b) Profiling
+    ;       profiling           % profile_time + profile_calls
+    ;       time_profiling      % profile_time + profile_calls
+    ;       memory_profiling    % profile_mem + profile_calls
+    ;       deep_profiling      % profile_deep
+    ;       profile_calls
+    ;       profile_time
+    ;       profile_memory
+    ;       profile_deep
+    ;       use_activation_counts
+            % Use_activation_counts is used to determine which mechanism for
+            % cycle detection should be used for deep profiling. Actually,
+            % we only want to use the `yes' value, but we keep support for
+            % the `no' value for benchmarks for the paper.
+
+    ;       pre_prof_transforms_simplify
+            % Run the simplification pass at before profiling (stage 215) this
+            % is implied by some of the profiling settings.  Specifying this
+            % option causes this simplification pass to run even when profiling
+            % is not enabled.
+
+    ;       pre_implicit_parallelism_simplify
+            % Run the simplification pass before the implicit parallelism pass
+            % to ensure that the HLDS more closely matches the feedback data.
+
+            % Perform coverage profiling, this affects only deep profiling
+            % grades.
+    ;       coverage_profiling
+    ;       coverage_profiling_via_calls
+    ;       coverage_profiling_static
+
+            % What types of coverage points to instrument the code with.
+    ;       profile_deep_coverage_after_goal
+    ;       profile_deep_coverage_branch_ite
+    ;       profile_deep_coverage_branch_switch
+    ;       profile_deep_coverage_branch_disj
+
+            % Tunables for the coverage profiling pass.
+            % XXX: Currently both these options are unsupported.
+    ;       profile_deep_coverage_use_portcounts
+    ;       profile_deep_coverage_use_trivial
+
+            % Turn on flags relevant for profiler directed feedback analysis.
+            % Currently the only feedback analysis is automatic parallelism.
+    ;       profile_for_feedback
+
+    ;       use_zeroing_for_ho_cycles
+    ;       use_lots_of_ho_specialization
+
+            % We should always handle tail recursion specially in deep
+            % profiling; the option is only for benchmarks for the paper,
+            % except that this is currently broken, and not supported with
+            % coverage profiling.
+    ;       deep_profile_tail_recursion
+    ;       record_term_sizes_as_words
+    ;       record_term_sizes_as_cells
+    ;       experimental_complexity
+
+    % (c) Miscellaneous
+    ;       gc
+    ;       parallel
+    ;       threadscope
+    ;       use_trail
+    ;       trail_segments
+    ;       use_minimal_model_stack_copy
+    ;       use_minimal_model_own_stacks
+    ;       minimal_model_debug
+    ;       single_prec_float
+    ;       type_layout
+    ;       maybe_thread_safe_opt
+    ;       extend_stacks_when_needed
+    ;       stack_segments
+    ;       use_regions
+    ;       use_alloc_regions
+    ;       use_regions_debug
+    ;       use_regions_profiling
+    ;       source_to_source_debug
+    ;       ssdb_trace_level
+    ;       link_ssdb_libs
+
+    % Data representation compilation model options
+    ;       tags
+    ;       num_tag_bits
+    ;       num_reserved_addresses
+    ;       num_reserved_objects
+    ;       bits_per_word
+    ;       bytes_per_word
+            % The undocumented conf_low_tag_bits option is used by the `mmc'
+            % script to pass the default value for num_tag_bits assuming
+            % --tags low. The reason that `mmc' doesn't just pass a default
+            % value for --num-tag-bits is that we want to be able to give an
+            % error message if the user specifies `--tags high' and doesn't
+            % specify `--num-tag-bits'.
+
+    ;       conf_low_tag_bits
+    ;       unboxed_float
+    ;       unboxed_enums
+    ;       unboxed_no_tag_types
+    ;       sync_term_size % in words
+
+    % LLDS back-end compilation model options
+    ;       gcc_non_local_gotos
+    ;       gcc_global_registers
+    ;       asm_labels
+    ;       pic_reg
+    ;       use_float_registers
+
+    % MLDS back-end compilation model options
+    ;       highlevel_code
+    ;       highlevel_data
+    ;       gcc_nested_functions
+    ;       det_copy_out
+    ;       nondet_copy_out
+    ;       put_commit_in_own_func
+    ;       put_nondet_env_on_heap
+
+    % IL back-end compilation model options
+    ;       verifiable_code
+    ;       il_refany_fields
+    ;       il_funcptr_types
+    ;       il_byref_tailcalls
+            % Currently this is not really a compilation model option, i.e.
+            % it doesn't affect the ABI. In future it might become one, though
+            % -- we should return multiple values in value types, rather than
+            % using byrefs. Also it's nicer to keep it with the other IL
+            % back-end options here.
+
+    % Options for internal use only (the values of these options are implied
+    % by the settings of other options)
+
+    ;       backend_foreign_languages
+            % The foreign programming languages that this backend can
+            % interface to.
+
+    ;       stack_trace
+            % Stack layout information required to do a stack trace.
+
+    ;       basic_stack_layout
+            % Stack layout information required to do accurate GC.
+
+    ;       agc_stack_layout
+            % Stack layout information required to do procedure identification.
+
+    ;       procid_stack_layout
+            % Stack layout information required to do execution tracing.
+
+    ;       trace_stack_layout
+
+    ;       body_typeinfo_liveness
+            % Use an alternate calculation of liveness where the typeinfo
+            % for a type variable must live at any point in the body of the
+            % procedure at which a live variable's type includes that type
+            % variable.
+            %
+            % Although this option governs whether the body of a procedure
+            % uses this liveness calculation, it is not the only consideration
+            % we have to take into account when deciding on the interface
+            % of any procedure whose address may be taken. We must include
+            % typeinfos describing the types of all arguments in the interface
+            % of a procedure if either this option is set *or* the procedure's
+            % address may be taken, otherwise, the layout structure we include
+            % in closures using that procedure may not have all the information
+            % required to reconstruct the types of all the values inside the
+            % closure.
+            %
+            % The only place in the compiler that should look at this option
+            % is the predicate body_should_use_typeinfo_liveness in
+            % hlds_pred.m; everything else, including the predicates deciding
+            % interface typeinfo liveness, should go through there.
+
+    ;       can_compare_constants_as_ints
+            % Should be set to yes if the target back end guarantees that
+            % comparing two values for equality, at least one of which is a
+            % constant, can be done by casting them both to integers and
+            % comparing the integers for equality.
+
+    ;       pretest_equality_cast_pointers
+            % Should be set to yes if the test of whether two input arguments
+            % are object identical should be done by casting the arguments to a
+            % generic pointer type. Otherwise they will be cast to integers.
+
+    ;       can_compare_compound_values
+            % Should be set to yes if the target back end supports comparison
+            % of non-atomic values with builtin operators.
+
+    ;       lexically_order_constructors
+            % Should be set to yes if we need to order functors
+            % lexically when generating comparison predicates,
+            % e.g. to match the natural order that functors will be compared
+            % on the backend.
+
+    ;       mutable_always_boxed
+
+    ;       delay_partial_instantiations
+
+    % Options for internal use only (setting these options to non-default
+    % values can result in programs that do not link, or programs that dump
+    % core)
+    ;       allow_defn_of_builtins
+            % Do not generate errors for definitions of builtin predicates.
+            % When a new builtin is introduced, the installed compiler won't
+            % know about it, and thus when it sees its declaration, it wants a
+            % definition, but when the modified compiler is bootstrapped,
+            % it would normally generate an error when it sees that very same
+            % definition in the library (usually in builtin.m or
+            % private_builtin.m). When this option is set, it allows such
+            % definitions. Once the modified compiler is installed on all
+            % relevant machines, the option can be turned off again.
+
+    ;       special_preds
+            % Generate unify and compare preds. For measurement only.
+            % Code generated with this set to `no' is unlikely to actually
+            % work.
+
+    ;       type_ctor_info
+            % Generate type_ctor_info structures. For measurement only --
+            % if you turn this off, then you're unlikely to be able to link.
+
+    ;       type_ctor_layout
+            % Generate type_ctor_layout structures. For measurement only --
+            % if you turn this off, then you're unlikely to be able to link.
+
+    ;       type_ctor_functors
+            % Generate type_ctor_functors structures. For measurement only --
+            % if you turn this off, then you're unlikely to be able to link.
+
+    ;       new_type_class_rtti
+            % XXX temporary option: enables the generation of new style static
+            % data structures for runtime information about type classes.
+            % These are not yet used. When we add code to generate the matching
+            % dynamic data structures and switch over to use them, we won't
+            % need this option anymore.
+
+    ;       rtti_line_numbers
+            % Generate line number information in the RTTI when debugging is
+            % enabled. For measurement only -- if you turn this off, then the
+            % debugger may dereference garbage pointers.
+
+    ;       disable_minimal_model_stack_copy_pneg
+    ;       disable_minimal_model_stack_copy_cut
+    ;       use_minimal_model_stack_copy_pneg
+    ;       use_minimal_model_stack_copy_cut
+            % These four are used to analyze the performance effects
+            % of minimal model tabling.
+
+    ;       disable_trail_ops
+            % This is used to analyze the performance effects of trailing.
+
+    ;       size_region_ite_fixed
+    ;       size_region_disj_fixed
+    ;       size_region_semi_disj_fixed
+    ;       size_region_commit_fixed
+
+    ;       size_region_ite_protect
+    ;       size_region_ite_snapshot
+    ;       size_region_semi_disj_protect
+    ;       size_region_disj_snapshot
+    ;       size_region_commit_entry
+
+    ;       solver_type_auto_init
+            % Insert calls to solver type initialisation predicates when
+            % the inst of solver type variables changes from free to any.
+
+    ;       allow_multi_arm_switches
+
+    ;       type_check_constraints
+
+    ;       allow_argument_packing
+
+    % Code generation options
+    ;       low_level_debug
+    ;       table_debug
+    ;       trad_passes
+    ;       parallel_liveness
+    ;       parallel_code_gen
+    ;       polymorphism
+    ;       reclaim_heap_on_failure
+    ;       reclaim_heap_on_semidet_failure
+    ;       reclaim_heap_on_nondet_failure
+    ;       have_delay_slot
+    ;       num_real_r_regs
+    ;       num_real_f_regs
+    ;       num_real_r_temps
+    ;       num_real_f_temps
+    ;       max_jump_table_size
+    ;       max_specialized_do_call_closure
+    ;       max_specialized_do_call_class_method
+    ;       compare_specialization
+    ;       should_pretest_equality
+    ;       fact_table_max_array_size
+            % Maximum number of elements in a single fact table data array.
+
+    ;       fact_table_hash_percent_full
+            % How full the fact table hash tables should be allowed to get,
+            % given as an integer percentage.
+
+    ;       gcc_local_labels
+    ;       prefer_switch
+    ;       opt_no_return_calls
+
+    % Optimization Options
+    ;       opt_level
+    ;       opt_level_number
+    ;       opt_space                   % Default is to optimize time.
+    ;       intermodule_optimization
+    ;       read_opt_files_transitively
+    ;       use_opt_files
+    ;       use_trans_opt_files
+    ;       transitive_optimization
+    ;       intermodule_analysis
+    ;       analysis_repeat
+    ;       analysis_file_cache
+
+    %   - HLDS
+    ;       allow_inlining
+    ;       inlining
+    ;       inline_simple
+    ;       inline_builtins
+    ;       inline_single_use
+    ;       inline_call_cost
+    ;       inline_compound_threshold
+    ;       inline_simple_threshold
+    ;       inline_vars_threshold
+    ;       intermod_inline_simple_threshold
+    ;       from_ground_term_threshold
+    ;       enable_const_struct
+    ;       common_struct
+    ;       common_struct_preds
+    ;       common_goal
+    ;       constraint_propagation
+    ;       local_constraint_propagation
+    ;       optimize_unused_args
+    ;       intermod_unused_args
+    ;       optimize_higher_order
+    ;       higher_order_size_limit
+    ;       higher_order_arg_limit
+    ;       unneeded_code
+    ;       unneeded_code_copy_limit
+    ;       unneeded_code_debug
+    ;       unneeded_code_debug_pred_name
+    ;       type_specialization
+    ;       user_guided_type_specialization
+    ;       introduce_accumulators
+    ;       optimize_constructor_last_call_accumulator
+    ;       optimize_constructor_last_call_null
+    ;       optimize_constructor_last_call
+    ;       optimize_duplicate_calls
+    ;       constant_propagation
+    ;       excess_assign
+    ;       optimize_format_calls
+    ;       optimize_saved_vars_const
+    ;       optimize_saved_vars_cell
+    ;       optimize_saved_vars_cell_loop
+    ;       optimize_saved_vars_cell_full_path
+    ;       optimize_saved_vars_cell_on_stack
+    ;       optimize_saved_vars_cell_candidate_headvars
+    ;       optimize_saved_vars_cell_cv_store_cost
+    ;       optimize_saved_vars_cell_cv_load_cost
+    ;       optimize_saved_vars_cell_fv_store_cost
+    ;       optimize_saved_vars_cell_fv_load_cost
+    ;       optimize_saved_vars_cell_op_ratio
+    ;       optimize_saved_vars_cell_node_ratio
+    ;       optimize_saved_vars_cell_all_path_node_ratio
+    ;       optimize_saved_vars_cell_include_all_candidates
+    ;       optimize_saved_vars
+    ;       loop_invariants
+    ;       delay_construct
+    ;       follow_code
+    ;       optimize_dead_procs
+    ;       deforestation
+    ;       deforestation_depth_limit
+    ;       deforestation_cost_factor
+    ;       deforestation_vars_threshold
+    ;       deforestation_size_threshold
+    ;       analyse_trail_usage
+    ;       optimize_trail_usage
+    ;       optimize_region_ops
+    ;       analyse_mm_tabling
+    ;       untuple
+    ;       tuple
+    ;       tuple_trace_counts_file
+    ;       tuple_costs_ratio
+    ;       tuple_min_args
+    ;       inline_par_builtins
+    ;       always_specialize_in_dep_par_conjs
+    ;       allow_some_paths_only_waits
+    ;       region_analysis
+
+    % Stuff for the CTGC system (structure sharing / structure reuse).
+    ;       structure_sharing_analysis
+    ;           structure_sharing_widening
+    ;       structure_reuse_analysis
+    ;           structure_reuse_constraint
+    ;           structure_reuse_constraint_arg
+    ;           structure_reuse_max_conditions
+    ;           structure_reuse_repeat
+    ;           structure_reuse_free_cells
+
+    % Stuff for the old termination analyser.
+    ;       termination
+    ;       termination_check
+    ;       verbose_check_termination
+    ;       termination_single_args
+    ;       termination_norm
+    ;       termination_error_limit
+    ;       termination_path_limit
+
+    % Stuff for the new termination analyser.
+    ;       termination2
+    ;          check_termination2
+    ;          verbose_check_termination2
+    ;          termination2_norm
+    ;          widening_limit
+    ;          arg_size_analysis_only
+    ;          propagate_failure_constrs
+    ;          term2_maximum_matrix_size
+    ;       analyse_exceptions
+    ;       analyse_closures
+
+    %   - HLDS->LLDS
+    ;       smart_indexing
+    ;         dense_switch_req_density
+    ;         lookup_switch_req_density
+    ;         dense_switch_size
+    ;         lookup_switch_size
+    ;         string_hash_switch_size
+    ;         string_binary_switch_size
+    ;         tag_switch_size
+    ;         try_switch_size
+    ;         binary_switch_size
+    ;         switch_single_rec_base_first
+    ;         switch_multi_rec_base_first
+
+    ;       static_ground_cells
+    ;       static_ground_floats
+    ;       static_code_addresses
+
+    ;       use_atomic_cells
+    ;       middle_rec
+    ;       simple_neg
+    ;       allow_hijacks
+
+    %   - MLDS
+    ;       optimize_tailcalls
+    ;       optimize_initializations
+    ;       eliminate_local_vars
+    ;       generate_trail_ops_inline
+
+    %   - LLDS
+    ;       common_data
+    ;       common_layout_data
+    ;       optimize            % Also used for MLDS->MLDS optimizations.
+    ;       optimize_peep
+    ;       optimize_peep_mkword
+    ;       optimize_jumps
+    ;       optimize_fulljumps
+    ;       pessimize_tailcalls
+    ;       checked_nondet_tailcalls
+    ;       use_local_vars
+    ;       local_var_access_threshold
+    ;       standardize_labels
+    ;       optimize_labels
+    ;       optimize_dups
+    ;       optimize_proc_dups
+    ;       optimize_frames
+    ;       optimize_delay_slot
+    ;       optimize_reassign
+    ;       optimize_repeat
+    ;       layout_compression_limit
+
+    %   - C
+    ;       use_macro_for_redo_fail
+    ;       emit_c_loops
+    ;       procs_per_c_function
+    ;       everything_in_one_c_function
+    ;       local_thread_engine_base
+
+    %   - IL
+    %   (none yet)
+
+    %   - Erlang
+    ;       erlang_switch_on_strings_as_atoms
+
+    % Target code compilation options
+    ;       target_debug
+
+    % C
+    ;       cc
+    ;       cflags
+    ;       quoted_cflag
+    ;       c_include_directory
+    ;       c_optimize
+    ;       ansi_c
+    ;       inline_alloc
+
+    % Flags for specific C compilers.
+    ;       gcc_flags
+    ;       quoted_gcc_flag
+    ;       clang_flags
+    ;       quoted_clang_flag
+    ;       msvc_flags
+    ;       quoted_msvc_flag
+
+    % Auto-configured C compilation options.
+    ;       cflags_for_warnings
+    ;       cflags_for_optimization
+    ;       cflags_for_ansi
+    ;       cflags_for_regs
+    ;       cflags_for_gotos
+    ;       cflags_for_threads
+    ;       cflags_for_debug
+    ;       cflags_for_pic
+    ;       c_flag_to_name_object_file
+    ;       object_file_extension
+    ;       pic_object_file_extension
+    ;       link_with_pic_object_file_extension
+    ;       c_compiler_type
+    ;       csharp_compiler_type
+
+    % Java
+    ;       java_compiler
+    ;       java_interpreter
+    ;       java_flags
+    ;       quoted_java_flag
+    ;       java_classpath
+    ;       java_object_file_extension
+
+    % IL
+    ;       il_assembler
+    ;       ilasm_flags
+    ;       quoted_ilasm_flag
+    ;       dotnet_library_version
+    ;       support_ms_clr
+    ;       support_rotor_clr
+
+    % C#
+    ;       csharp_compiler
+    ;       csharp_flags
+    ;       quoted_csharp_flag
+    ;       cli_interpreter
+
+    % Erlang
+    ;       erlang_compiler
+    ;       erlang_interpreter
+    ;       erlang_flags
+    ;       quoted_erlang_flag
+    ;       erlang_include_directory
+    ;       erlang_object_file_extension
+    ;       erlang_native_code
+    ;       erlang_inhibit_trivial_warnings
+
+    % Link options
+    ;       output_file_name
+    ;       ld_flags
+    ;       quoted_ld_flag
+    ;       ld_libflags
+    ;       quoted_ld_libflag
+    ;       link_library_directories
+    ;       runtime_link_library_directories
+    ;       link_libraries
+    ;       link_objects
+    ;       mercury_library_directories
+    ;       mercury_library_directory_special
+    ;       search_library_files_directories
+    ;       search_library_files_directory_special
+    ;       mercury_libraries
+    ;       mercury_library_special
+    ;       mercury_standard_library_directory
+    ;       mercury_standard_library_directory_special
+    ;       init_file_directories
+    ;       init_files
+    ;       trace_init_files
+    ;       linkage
+    ;       linkage_special
+    ;       mercury_linkage
+    ;       mercury_linkage_special
+    ;       strip
+    ;       demangle
+    ;       main
+    ;       allow_undefined
+    ;       use_readline
+    ;       runtime_flags
+    ;       extra_initialization_functions
+    ;       frameworks
+    ;       framework_directories
+
+    % Auto-configured options.
+    ;       shared_library_extension
+    ;       library_extension
+    ;       executable_file_extension
+    ;       link_executable_command
+    ;       link_shared_lib_command
+    ;       create_archive_command
+    ;       create_archive_command_output_flag
+    ;       create_archive_command_flags
+    ;       ranlib_command
+    ;       ranlib_flags
+    ;       mkinit_command
+    ;       mkinit_erl_command
+    ;       demangle_command
+    ;       filtercc_command
+    ;       trace_libs
+    ;       thread_libs
+    ;       hwloc_libs
+    ;       hwloc_static_libs
+    ;       shared_libs
+    ;       math_lib
+    ;       readline_libs
+    ;       linker_opt_separator
+    ;       linker_thread_flags
+    ;       shlib_linker_thread_flags
+    ;       linker_static_flags
+    ;       linker_strip_flag
+    ;       linker_link_lib_flag
+    ;       linker_link_lib_suffix
+    ;       shlib_linker_link_lib_flag
+    ;       shlib_linker_link_lib_suffix
+    ;       linker_debug_flags
+    ;       shlib_linker_debug_flags
+    ;       linker_trace_flags
+    ;       shlib_linker_trace_flags
+    ;       linker_path_flag
+    ;       linker_rpath_flag
+    ;       linker_rpath_separator
+    ;       shlib_linker_rpath_flag
+    ;       shlib_linker_rpath_separator
+    ;       linker_allow_undefined_flag
+    ;       linker_error_undefined_flag
+    ;       shlib_linker_use_install_name
+    ;       shlib_linker_install_name_flag
+    ;       shlib_linker_install_name_path
+    ;       java_archive_command
+
+    % Build system options
+    ;       make
+    ;       keep_going
+    ;       rebuild
+    ;       jobs
+    ;       track_flags
+    ;       invoked_by_mmc_make
+    ;       extra_init_command
+    ;       pre_link_command
+    ;       install_prefix
+    ;       use_symlinks
+    ;       mercury_configuration_directory
+    ;       mercury_configuration_directory_special
+    ;       install_command
+    ;       install_command_dir_option
+    ;       libgrades
+    ;       libgrades_include_components
+    ;       libgrades_exclude_components
+    ;       lib_linkages
+    ;       flags_file
+    ;       options_files
+    ;       config_file
+    ;       options_search_directories
+    ;       use_subdirs
+    ;       use_grade_subdirs
+    ;       search_directories
+    ;       intermod_directories
+    ;       use_search_directories_for_intermod
+    ;       libgrade_install_check
+    ;       order_make_by_timestamp
+    ;       show_make_times
+    ;       extra_library_header
+    ;       restricted_command_line
+    ;       env_type
+    ;       host_env_type
+    ;       target_env_type
+
+    % Miscellaneous Options
+    ;       filenames_from_stdin
+    ;       typecheck_ambiguity_warn_limit
+    ;       typecheck_ambiguity_error_limit
+    ;       help
+    ;       version
+    ;       fullarch
+    ;       cross_compiling
+    ;       local_module_id
+    ;       analysis_file_cache_dir
+    ;       compiler_sufficiently_recent
+            % This option is used to test that the compiler is sufficiently
+            % recent when no other test can easily be constructed in
+            % configure.in.
+
+    ;       experiment
+            % This option is provided for use by implementors who want to
+            % compare a new way of doing something with the old way. The idea
+            % is that the code that switches between the two ways should
+            % consult this option and make its decision accordingly.
+            %
+            % The intention is that all use of this option is within developer
+            % workspaces; no code using this option should be committed.
+            %
+            % Of course, a developer could always create a purpose-specific
+            % option to control their code, but adding an option requires
+            % recompiling most of the modules in the compiler. Having this
+            % option permanently here should reduce the need for that.
+
+    ;       ignore_par_conjunctions
+    ;       control_granularity
+    ;       distance_granularity
+    ;       implicit_parallelism
+    ;       feedback_file
+    ;       par_loop_control
+    ;       par_loop_control_preserve_tail_recursion.
+
+%----------------------------------------------------------------------------%
+%----------------------------------------------------------------------------%
+
+:- implementation.
+
+:- import_module libs.handle_options.
+
+:- import_module assoc_list.
+:- import_module bool.
+:- import_module dir.
+:- import_module int.
+:- import_module list.
+:- import_module map.
+:- import_module maybe.
+:- import_module pair.
+:- import_module require.
+:- import_module string.
+
+%----------------------------------------------------------------------------%
+
+:- type option_category
+    --->    warning_option
+    ;       verbosity_option
+    ;       output_option
+    ;       aux_output_option
+    ;       language_semantics_option
+    ;       compilation_model_option
+    ;       internal_use_option
+    ;       code_gen_option
+    ;       special_optimization_option
+    ;       optimization_option
+    ;       target_code_compilation_option
+    ;       link_option
+    ;       build_system_option
+    ;       miscellaneous_option.
+
+option_defaults(Option, Default) :-
+    option_defaults_2(_Category, OptionsList),
+    list.member(Option - Default, OptionsList).
+
+:- pred option_defaults_2(option_category, list(pair(option, option_data))).
+:- mode option_defaults_2(in, out) is det.
+:- mode option_defaults_2(out, out) is multi.
+
+option_defaults_2(warning_option, [
+    % Warning Options
+    inhibit_warnings                    -   bool_special,
+    inhibit_accumulator_warnings        -   bool(no),
+    halt_at_warn                        -   bool(no),
+    halt_at_syntax_errors               -   bool(no),
+    halt_at_auto_parallel_failure       -   bool(no),
+
+    % IMPORTANT NOTE:
+    % if you add any new warning options, or if you change the default
+    % for an existing warning option to `yes', then you will need to modify
+    % the handling of inhibit_warnings.
+
+    warn_singleton_vars                 -   bool(yes),
+    warn_overlapping_scopes             -   bool(yes),
+    warn_det_decls_too_lax              -   bool(yes),
+    warn_inferred_erroneous             -   bool(yes),
+    warn_nothing_exported               -   bool(yes),
+    warn_unused_args                    -   bool(no),
+    warn_interface_imports              -   bool(yes),
+    warn_non_contiguous_clauses         -   bool(no),   % XXX should be yes
+    warn_non_contiguous_foreign_procs   -   bool(no),
+    warn_non_stratification             -   bool(no),
+    warn_missing_opt_files              -   bool(yes),
+    warn_missing_trans_opt_files        -   bool(no),
+    warn_missing_trans_opt_deps         -   bool(yes),
+    warn_unification_cannot_succeed     -   bool(yes),
+    warn_simple_code                    -   bool(yes),
+    warn_duplicate_calls                -   bool(no),
+    warn_missing_module_name            -   bool(yes),
+    warn_wrong_module_name              -   bool(yes),
+    warn_smart_recompilation            -   bool(yes),
+    warn_undefined_options_variables    -   bool(yes),
+    warn_non_tail_recursion             -   bool(no),
+    warn_target_code                    -   bool(yes),
+    warn_up_to_date                     -   bool(yes),
+    warn_stubs                          -   bool(yes),
+    warn_dead_procs                     -   bool(no),
+    warn_table_with_inline              -   bool(yes),
+    warn_non_term_special_preds         -   bool(yes),
+    warn_known_bad_format_calls         -   bool(yes),
+    warn_unknown_format_calls           -   bool(no),
+    warn_obsolete                       -   bool(yes),
+    warn_insts_without_matching_type    -   bool(yes),
+        % XXX disabled by default until someone
+        % removes all the unused imports from
+        % the compiler itself which is compiled
+        % with --halt-at-warn by default.
+    warn_unused_imports                 -   bool(no),
+    inform_ite_instead_of_switch        -   bool(no),
+    warn_unresolved_polymorphism        -   bool(yes),
+    warn_suspicious_foreign_procs       -   bool(no),
+    warn_state_var_shadowing            -   bool(yes),
+    inform_inferred                     -   bool_special,
+    inform_inferred_types               -   bool(yes),
+    inform_inferred_modes               -   bool(yes)
+]).
+option_defaults_2(verbosity_option, [
+    % Verbosity Options
+    verbose                             -   bool(no),
+    very_verbose                        -   bool(no),
+    verbose_errors                      -   bool(no),
+    verbose_recompilation               -   bool(no),
+    find_all_recompilation_reasons      -   bool(no),
+    verbose_make                        -   bool(yes),
+    verbose_commands                    -   bool(no),
+    output_compile_error_lines          -   int(15),
+    report_cmd_line_args                -   bool(no),
+    report_cmd_line_args_in_doterr      -   bool(no),
+    statistics                          -   bool(no),
+    detailed_statistics                 -   bool(no),
+    proc_size_statistics                -   string(""),
+    debug_types                         -   bool(no),
+    debug_modes                         -   bool(no),
+    debug_modes_statistics              -   bool(no),
+    debug_modes_minimal                 -   bool(no),
+    debug_modes_verbose                 -   bool(no),
+    debug_modes_pred_id                 -   int(-1),
+    debug_dep_par_conj                  -   accumulating([]),
+    debug_det                           -   bool(no),
+    debug_code_gen_pred_id              -   int(-1),
+    debug_term                          -   bool(no),
+    debug_opt                           -   bool(no),
+    debug_opt_pred_id                   -   accumulating([]),
+    debug_opt_pred_name                 -   accumulating([]),
+    debug_pd                            -   bool(no),
+    debug_il_asm                        -   bool(no),
+    debug_liveness                      -   int(-1),
+    debug_stack_opt                     -   int(-1),
+    debug_make                          -   bool(no),
+    debug_closure                       -   bool(no),
+    debug_trail_usage                   -   bool(no),
+    debug_mode_constraints              -   bool(no),
+    debug_intermodule_analysis          -   bool(no),
+    debug_mm_tabling_analysis           -   bool(no),
+    debug_indirect_reuse                -   bool(no),
+    debug_type_rep                      -   bool(no)
+]).
+option_defaults_2(output_option, [
+    % Output Options (mutually exclusive)
+    generate_source_file_mapping        -   bool(no),
+    generate_dependency_file            -   bool(no),
+    generate_dependencies               -   bool(no),
+    generate_module_order               -   bool(no),
+    generate_standalone_interface       -   maybe_string(no),
+    make_short_interface                -   bool(no),
+    make_interface                      -   bool(no),
+    make_private_interface              -   bool(no),
+    make_optimization_interface         -   bool(no),
+    make_transitive_opt_interface       -   bool(no),
+    make_analysis_registry              -   bool(no),
+    make_xml_documentation              -   bool(no),
+    convert_to_mercury                  -   bool(no),
+    typecheck_only                      -   bool(no),
+    errorcheck_only                     -   bool(no),
+    target_code_only                    -   bool(no),
+    compile_only                        -   bool(no),
+    compile_to_shared_lib               -   bool(no),
+    output_grade_string                 -   bool(no),
+    output_link_command                 -   bool(no),
+    output_shared_lib_link_command      -   bool(no),
+    output_libgrades                    -   bool(no),
+    output_cc                           -   bool(no),
+    output_c_compiler_type              -   bool(no),
+    output_csharp_compiler_type         -   bool(no),
+    output_cflags                       -   bool(no),
+    output_library_link_flags           -   bool(no),
+    output_grade_defines                -   bool(no),
+    output_c_include_directory_flags    -   bool(no)
+]).
+option_defaults_2(aux_output_option, [
+    % Auxiliary Output Options
+    smart_recompilation                 -   bool(no),
+    generate_item_version_numbers       -   bool(no),
+    generate_mmc_make_module_dependencies - bool(no),
+    assume_gmake                        -   bool(yes),
+    trace_level                         -   string("default"),
+    trace_optimized                     -   bool(no),
+    trace_prof                          -   bool(no),
+    trace_table_io                      -   bool(no),
+    trace_table_io_only_retry           -   bool(no),
+    trace_table_io_states               -   bool(no),
+    trace_table_io_require              -   bool(no),
+    trace_table_io_all                  -   bool(no),
+    trace_goal_flags                    -   accumulating([]),
+    prof_optimized                      -   bool(no),
+    exec_trace_tail_rec                 -   bool(no),
+    suppress_trace                      -   string(""),
+    force_disable_tracing               -   bool(no),
+    delay_death                         -   bool(yes),
+    delay_death_max_vars                -   int(1000),
+    stack_trace_higher_order            -   bool(no),
+    force_disable_ssdebug               -   bool(no),
+    generate_bytecode                   -   bool(no),
+    line_numbers                        -   bool(yes),
+    auto_comments                       -   bool(no),
+    frameopt_comments                   -   bool(no),
+    max_error_line_width                -   int(79),
+    show_dependency_graph               -   bool(no),
+    imports_graph                       -   bool(no),
+    dump_trace_counts                   -   accumulating([]),
+    dump_hlds                           -   accumulating([]),
+    dump_hlds_pred_id                   -   accumulating([]),
+    dump_hlds_pred_name                 -   accumulating([]),
+    dump_hlds_alias                     -   string(""),
+    dump_hlds_options                   -   string(""),
+    dump_hlds_inst_limit                -   int(100),
+    dump_hlds_file_suffix               -   string(""),
+    dump_same_hlds                      -   bool(no),
+    dump_mlds                           -   accumulating([]),
+    verbose_dump_mlds                   -   accumulating([]),
+    mode_constraints                    -   bool(no),
+    simple_mode_constraints             -   bool(no),
+    prop_mode_constraints               -   bool(no),
+    benchmark_modes                     -   bool(no),
+    benchmark_modes_repeat              -   int(1),
+    sign_assembly                       -   bool(no),
+    % XXX should default to no but currently broken
+    separate_assemblies                 -   bool(yes)
+]).
+option_defaults_2(language_semantics_option, [
+    strict_sequential                   -   special,
+    reorder_conj                        -   bool(yes),
+    reorder_disj                        -   bool(yes),
+    fully_strict                        -   bool(yes),
+    allow_stubs                         -   bool(no),
+    infer_types                         -   bool(no),
+    infer_modes                         -   bool(no),
+    infer_det                           -   bool(yes),
+    infer_all                           -   bool_special,
+    type_inference_iteration_limit      -   int(60),
+    mode_inference_iteration_limit      -   int(30),
+    event_set_file_name                 -   string("")
+]).
+option_defaults_2(compilation_model_option, [
+    % Compilation model options (ones that affect binary compatibility).
+    grade                               -   string_special,
+    % The `mmc' script will pass the default grade determined
+    % at configuration time.
+
+    % Target selection compilation model options
+    target                              -   string("c"),
+    il                                  -   special,
+    il_only                             -   special,
+    compile_to_c                        -   special,
+    csharp                              -   special,
+    csharp_only                         -   special,
+    java                                -   special,
+    java_only                           -   special,
+    x86_64                              -   special,
+    x86_64_only                         -   special,
+    erlang                              -   special,
+    erlang_only                         -   special,
+
+    % Optional feature compilation model options:
+    % (a) Debuggging
+    exec_trace                          -   bool(no),
+    decl_debug                          -   bool(no),
+    % (b) Profiling
+    profiling                           -   bool_special,
+    time_profiling                      -   special,
+    memory_profiling                    -   special,
+    deep_profiling                      -   special,
+    profile_calls                       -   bool(no),
+    profile_time                        -   bool(no),
+    profile_memory                      -   bool(no),
+    profile_deep                        -   bool(no),
+    use_activation_counts               -   bool(no),
+    pre_prof_transforms_simplify        -   bool(no),
+    pre_implicit_parallelism_simplify   -   bool(no),
+    coverage_profiling                  -   bool(yes),
+    coverage_profiling_via_calls        -   bool(no),
+    coverage_profiling_static           -   bool(no),
+    profile_deep_coverage_after_goal    -   bool(yes),
+    profile_deep_coverage_branch_ite    -   bool(yes),
+    profile_deep_coverage_branch_switch -   bool(yes),
+    profile_deep_coverage_branch_disj   -   bool(yes),
+    profile_deep_coverage_use_portcounts -  bool(no),
+    profile_deep_coverage_use_trivial   -   bool(no),
+    profile_for_feedback                -   bool(no),
+    use_zeroing_for_ho_cycles           -   bool(yes),
+    use_lots_of_ho_specialization       -   bool(no),
+    deep_profile_tail_recursion         -   bool(no),
+    record_term_sizes_as_words          -   bool(no),
+    record_term_sizes_as_cells          -   bool(no),
+    experimental_complexity             -   string(""),
+    % (c) Miscellaneous optional features
+    gc                                  -   string("boehm"),
+    parallel                            -   bool(no),
+    threadscope                         -   bool(no),
+    use_trail                           -   bool(no),
+    trail_segments                      -   bool(no),
+    maybe_thread_safe_opt               -   string("no"),
+    extend_stacks_when_needed           -   bool(no),
+    stack_segments                      -   bool(no),
+    use_regions                         -   bool(no),
+    use_alloc_regions                   -   bool(yes),
+    use_regions_debug                   -   bool(no),
+    use_regions_profiling               -   bool(no),
+    use_minimal_model_stack_copy        -   bool(no),
+    use_minimal_model_own_stacks        -   bool(no),
+    minimal_model_debug                 -   bool(no),
+    single_prec_float                   -   bool(no),
+    type_layout                         -   bool(yes),
+    source_to_source_debug              -   bool(no),
+    ssdb_trace_level                    -   string("default"),
+    link_ssdb_libs                      -   bool(no),
+
+    % Data representation compilation model options
+    pic_reg                             -   bool(no),
+    tags                                -   string("low"),
+    num_tag_bits                        -   int(-1),
+                                        % -1 is a special value which means
+                                        % use the value of conf_low_tag_bits
+                                        % instead
+    num_reserved_addresses              -   int(0),
+    num_reserved_objects                -   int(0),
+    bits_per_word                       -   int(32),
+                                        % A good default for the current
+                                        % generation of architectures.
+    bytes_per_word                      -   int(4),
+                                        % A good default for the current
+                                        % generation of architectures.
+    conf_low_tag_bits                   -   int(2),
+                                        % The `mmc' script will override the
+                                        % above default with a value determined
+                                        % at configuration time.
+    sync_term_size                      -   int(8),
+                                        % 8 is the size on linux (at the time
+                                        % of writing) - will usually be
+                                        % overridden by a value from configure.
+    unboxed_float                       -   bool(no),
+    unboxed_enums                       -   bool(yes),
+    unboxed_no_tag_types                -   bool(yes),
+
+    % LLDS back-end compilation model options
+    gcc_non_local_gotos                 -   bool(yes),
+    gcc_global_registers                -   bool(yes),
+    asm_labels                          -   bool(yes),
+    use_float_registers                 -   bool(yes),
+
+    % MLDS back-end compilation model options
+    highlevel_code                      -   bool(no),
+    highlevel_data                      -   bool(no),
+    gcc_nested_functions                -   bool(no),
+    det_copy_out                        -   bool(no),
+    nondet_copy_out                     -   bool(no),
+    put_commit_in_own_func              -   bool(no),
+    put_nondet_env_on_heap              -   bool(no),
+
+    % IL back-end compilation model options
+    verifiable_code                     -   bool(no),
+    il_funcptr_types                    -   bool(no),
+    il_refany_fields                    -   bool(no),
+    il_byref_tailcalls                  -   bool(no)
+]).
+option_defaults_2(internal_use_option, [
+    % Options for internal use only
+    backend_foreign_languages           -  accumulating([]),
+                                        % The backend_foreign_languages option
+                                        % depends on the target and is set in
+                                        % handle_options.
+    stack_trace                         -   bool(no),
+    basic_stack_layout                  -   bool(no),
+    agc_stack_layout                    -   bool(no),
+    procid_stack_layout                 -   bool(no),
+    trace_stack_layout                  -   bool(no),
+    body_typeinfo_liveness              -   bool(no),
+    can_compare_constants_as_ints       -   bool(no),
+    pretest_equality_cast_pointers      -   bool(no),
+    can_compare_compound_values         -   bool(no),
+    lexically_order_constructors        -   bool(no),
+    mutable_always_boxed                -   bool(yes),
+    delay_partial_instantiations        -   bool(no),
+    allow_defn_of_builtins              -   bool(no),
+    special_preds                       -   bool(yes),
+    type_ctor_info                      -   bool(yes),
+    type_ctor_layout                    -   bool(yes),
+    type_ctor_functors                  -   bool(yes),
+    rtti_line_numbers                   -   bool(yes),
+    new_type_class_rtti                 -   bool(no),
+    disable_minimal_model_stack_copy_pneg - bool(no),
+    disable_minimal_model_stack_copy_cut -  bool(no),
+    use_minimal_model_stack_copy_pneg   -   bool(no),
+    use_minimal_model_stack_copy_cut    -   bool(no),
+    disable_trail_ops                   -   bool(no),
+    % The size_* values below *must* be consistent with the corresponding
+    % values or data structures in mercury_region.h.
+    size_region_ite_fixed               -   int(4),
+    size_region_disj_fixed              -   int(4),
+    size_region_commit_fixed            -   int(5),
+    size_region_ite_protect             -   int(1),
+    size_region_ite_snapshot            -   int(3),
+    size_region_semi_disj_protect       -   int(1),
+    size_region_disj_snapshot           -   int(3),
+    size_region_commit_entry            -   int(1),
+    solver_type_auto_init               -   bool(no),
+    allow_multi_arm_switches            -   bool(yes),
+    type_check_constraints              -   bool(no),
+    allow_argument_packing              -   bool(yes)
+]).
+option_defaults_2(code_gen_option, [
+    % Code Generation Options
+    low_level_debug                     -   bool(no),
+    table_debug                         -   bool(no),
+    trad_passes                         -   bool(yes),
+    parallel_liveness                   -   bool(no),
+    parallel_code_gen                   -   bool(no),
+    polymorphism                        -   bool(yes),
+    reclaim_heap_on_failure             -   bool_special,
+    reclaim_heap_on_semidet_failure     -   bool(yes),
+    reclaim_heap_on_nondet_failure      -   bool(yes),
+    have_delay_slot                     -   bool(no),
+                                        % The `mmc' script may override the
+                                        % above default if configure says
+                                        % the machine has branch delay slots.
+    num_real_r_regs                     -   int(5),
+    num_real_f_regs                     -   int(0),
+    num_real_r_temps                    -   int(5),
+    num_real_f_temps                    -   int(0),
+                                        % The `mmc' script will override the
+                                        % above defaults with values determined
+                                        % at configuration time.
+    max_jump_table_size                 -   int(0),
+                                        % 0 indicates any size.
+    max_specialized_do_call_closure     -   int(5),
+                                        % mercury.do_call_closure_N
+                                        % exists for N <= option_value;
+                                        % set to -1 to disable.
+                                        % Should be less than or equal to
+                                        % max_spec_explicit_arg
+                                        % in tools/make_spec_ho_call.
+    max_specialized_do_call_class_method -  int(6),
+                                        % mercury.do_call_class_method_N
+                                        % exists for N <= option_value;
+                                        % set to -1 to disable.
+                                        % Should be less than or equal to
+                                        % max_spec_explicit_arg
+                                        % in tools/make_spec_method_call.
+    compare_specialization              -   int(-1),
+                                        % -1 asks handle_options.m to give
+                                        % the value, which may be grade
+                                        % dependent.
+    should_pretest_equality             -   bool(yes),
+    fact_table_max_array_size           -   int(1024),
+    fact_table_hash_percent_full        -   int(90),
+    gcc_local_labels                    -   bool(no),
+    prefer_switch                       -   bool(yes),
+    opt_no_return_calls                 -   bool(yes)
+]).
+option_defaults_2(special_optimization_option, [
+    % Special optimization options.
+    % These ones are not affected by `-O<n>'.
+    opt_level                           -   int_special,
+    opt_level_number                    -   int(-2),
+    opt_space                           -   special,
+    intermodule_optimization            -   bool(no),
+    read_opt_files_transitively         -   bool(yes),
+    use_opt_files                       -   bool(no),
+    use_trans_opt_files                 -   bool(no),
+    transitive_optimization             -   bool(no),
+    intermodule_analysis                -   bool(no),
+    analysis_repeat                     -   int(0),
+    analysis_file_cache                 -   bool(no),
+    termination_check                   -   bool(no),
+    verbose_check_termination           -   bool(no),
+    structure_sharing_analysis          -   bool(no),
+    structure_sharing_widening          -   int(0),
+    structure_reuse_analysis            -   bool(no),
+    structure_reuse_constraint        -   string("within_n_cells_difference"),
+    structure_reuse_constraint_arg      -   int(0),
+    structure_reuse_max_conditions      -   int(10),
+    structure_reuse_repeat              -   int(0),
+    structure_reuse_free_cells          -   bool(no),
+    termination                         -   bool(no),
+    termination_single_args             -   int(0),
+    termination_norm                    -   string("total"),
+    termination_error_limit             -   int(3),
+    termination_path_limit              -   int(256),
+    termination2                        -   bool(no),
+    termination2_norm                   -   string("total"),
+    check_termination2                  -   bool(no),
+    verbose_check_termination2          -   bool(no),
+    widening_limit                      -   int(4),
+    arg_size_analysis_only              -   bool(no),
+    propagate_failure_constrs           -   bool(yes),
+    % XXX This is just a guess - I'm not sure what sensible
+    % value for this is.
+    term2_maximum_matrix_size           -   int(70),
+    analyse_exceptions                  -   bool(no),
+    analyse_closures                    -   bool(no),
+    analyse_trail_usage                 -   bool(no),
+    optimize_trail_usage                -   bool(no),
+    optimize_region_ops                 -   bool(no),
+    analyse_mm_tabling                  -   bool(no)
+]).
+option_defaults_2(optimization_option, [
+    % Optimization options
+    %
+    % IMPORTANT: the default here should be all optimizations OFF.
+    % Optimizations should be enabled by the appropriate
+    % optimization level in the opt_level table.
+
+    % HLDS
+    allow_inlining                      -   bool(yes),
+    inlining                            -   bool_special,
+    inline_simple                       -   bool(no),
+    inline_builtins                     -   bool(yes),
+    inline_single_use                   -   bool(no),
+    inline_call_cost                    -   int(0),
+    inline_compound_threshold           -   int(0),
+    inline_simple_threshold             -   int(5),
+                                        % Has no effect until
+                                        % --inline-simple is enabled.
+    inline_vars_threshold               -   int(100),
+    intermod_inline_simple_threshold    -   int(5),
+                                        % Has no effect until
+                                        % --intermodule-optimization.
+    from_ground_term_threshold          -   int(5),
+    enable_const_struct                 -   bool(yes),
+    common_struct                       -   bool(no),
+    common_struct_preds                 -   string(""),
+    common_goal                         -   bool(yes),
+                                        % common_goal is not really an
+                                        % optimization, since it affects
+                                        % the semantics.
+
+    constraint_propagation              -   bool(no),
+    local_constraint_propagation        -   bool(no),
+    optimize_duplicate_calls            -   bool(no),
+    constant_propagation                -   bool(no),
+    excess_assign                       -   bool(no),
+    optimize_format_calls               -   bool(yes),
+    loop_invariants                     -   bool(no),
+    optimize_saved_vars_const           -   bool(no),
+    optimize_saved_vars_cell            -   bool(no),
+    optimize_saved_vars_cell_loop       -   bool(yes),
+    optimize_saved_vars_cell_full_path  -   bool(yes),
+    optimize_saved_vars_cell_on_stack   -   bool(yes),
+    optimize_saved_vars_cell_candidate_headvars -   bool(yes),
+    optimize_saved_vars_cell_cv_store_cost - int(3),
+    optimize_saved_vars_cell_cv_load_cost  - int(1),
+    optimize_saved_vars_cell_fv_store_cost - int(1),
+    optimize_saved_vars_cell_fv_load_cost  - int(1),
+    optimize_saved_vars_cell_op_ratio   -   int(100),
+    optimize_saved_vars_cell_node_ratio -   int(100),
+    optimize_saved_vars_cell_all_path_node_ratio    - int(100),
+    optimize_saved_vars_cell_include_all_candidates - bool(yes),
+    optimize_saved_vars                 -   bool_special,
+    delay_construct                     -   bool(no),
+    follow_code                         -   bool(no),
+    optimize_unused_args                -   bool(no),
+    intermod_unused_args                -   bool(no),
+    optimize_higher_order               -   bool(no),
+    higher_order_size_limit             -   int(20),
+    higher_order_arg_limit              -   int(10),
+    unneeded_code                       -   bool(no),
+    unneeded_code_copy_limit            -   int(10),
+    unneeded_code_debug                 -   bool(no),
+    unneeded_code_debug_pred_name       -   accumulating([]),
+    type_specialization                 -   bool(no),
+    user_guided_type_specialization     -   bool(no),
+    introduce_accumulators              -   bool(no),
+    optimize_constructor_last_call_accumulator -    bool(no),
+    optimize_constructor_last_call_null -   bool(no),
+    optimize_constructor_last_call      -   bool(no),
+    optimize_dead_procs                 -   bool(no),
+    deforestation                       -   bool(no),
+    deforestation_depth_limit           -   int(4),
+    deforestation_cost_factor           -   int(1000),
+    deforestation_vars_threshold        -   int(200),
+    deforestation_size_threshold        -   int(15),
+    untuple                             -   bool(no),
+    tuple                               -   bool(no),
+    tuple_trace_counts_file             -   string(""),
+    tuple_costs_ratio                   -   int(100),
+    tuple_min_args                      -   int(4),
+    inline_par_builtins                 -   bool(no),
+    always_specialize_in_dep_par_conjs  -   bool(no),
+    allow_some_paths_only_waits         -   bool(yes),
+    region_analysis                     -   bool(no),
+
+    % HLDS -> LLDS
+    smart_indexing                      -   bool(no),
+    dense_switch_req_density            -   int(25),
+                                        % Minimum density before using
+                                        % a dense switch.
+    lookup_switch_req_density           -   int(25),
+                                        % Minimum density before using
+                                        % a lookup switch.
+    dense_switch_size                   -   int(4),
+    lookup_switch_size                  -   int(4),
+    string_hash_switch_size             -   int(8),
+    string_binary_switch_size           -   int(4),
+    tag_switch_size                     -   int(3),
+    try_switch_size                     -   int(3),
+    binary_switch_size                  -   int(4),
+    switch_single_rec_base_first        -   bool(no),
+    switch_multi_rec_base_first         -   bool(yes),
+    static_ground_cells                 -   bool(no),
+    static_ground_floats                -   bool(no),
+    static_code_addresses               -   bool(no),
+    use_atomic_cells                    -   bool(no),
+    middle_rec                          -   bool(no),
+    simple_neg                          -   bool(no),
+    allow_hijacks                       -   bool(yes),
+
+    % MLDS
+    optimize_tailcalls                  -   bool(no),
+    optimize_initializations            -   bool(no),
+    eliminate_local_vars                -   bool(no),
+    generate_trail_ops_inline           -   bool(yes),
+
+    % LLDS
+    common_data                         -   bool(no),
+    common_layout_data                  -   bool(yes),
+    optimize                            -   bool(no),
+    optimize_peep                       -   bool(no),
+    optimize_peep_mkword                -   bool(no),
+    optimize_jumps                      -   bool(no),
+    optimize_fulljumps                  -   bool(no),
+    pessimize_tailcalls                 -   bool(no),
+    checked_nondet_tailcalls            -   bool(no),
+    use_local_vars                      -   bool(no),
+    local_var_access_threshold          -   int(2),
+    standardize_labels                  -   bool(no),
+    optimize_labels                     -   bool(no),
+    optimize_dups                       -   bool(no),
+    optimize_proc_dups                  -   bool(no),
+    optimize_frames                     -   bool(no),
+    optimize_delay_slot                 -   bool(no),
+    optimize_reassign                   -   bool(no),
+    optimize_repeat                     -   int(0),
+    layout_compression_limit            -   int(4000),
+
+    % LLDS -> C
+    use_macro_for_redo_fail             -   bool(no),
+    emit_c_loops                        -   bool(no),
+    procs_per_c_function                -   int(1),
+    everything_in_one_c_function        -   special,
+    local_thread_engine_base            -   bool(yes),
+
+    % Erlang
+    erlang_switch_on_strings_as_atoms   -   bool(no)
+]).
+option_defaults_2(target_code_compilation_option, [
+    % Target code compilation options
+    target_debug                        -   bool(no),
+
+    % C
+    cc                                  -   string("gcc"),
+                                        % The `mmc' script will override the
+                                        % default with a value determined at
+                                        % configuration time.
+    c_include_directory                 -   accumulating([]),
+                                        % The `mmc' script will override the
+                                        % default with a value determined at
+                                        % configuration time.
+    c_optimize                          -   bool(no),
+    ansi_c                              -   bool(yes),
+    inline_alloc                        -   bool(no),
+    cflags                              -   accumulating([]),
+    quoted_cflag                        -   string_special,
+
+    gcc_flags                           -   accumulating([]),
+    quoted_gcc_flag                     -   string_special,
+    clang_flags                         -   accumulating([]),
+    quoted_clang_flag                   -   string_special,
+    msvc_flags                          -   accumulating([]),
+    quoted_msvc_flag                    -   string_special,
+
+    cflags_for_warnings                 -   string(""),
+                                        % The `mmc' script will override the
+                                        % default with values determined at
+                                        % configuration time.
+    cflags_for_optimization             -   string("-O"),
+    cflags_for_ansi                     -   string(""),
+    cflags_for_regs                     -   string(""),
+    cflags_for_gotos                    -   string(""),
+    cflags_for_threads                  -   string(""),
+    cflags_for_debug                    -   string("-g"),
+    cflags_for_pic                      -   string(""),
+    c_flag_to_name_object_file          -   string("-o "),
+    object_file_extension               -   string(".o"),
+    pic_object_file_extension           -   string(".o"),
+    link_with_pic_object_file_extension -   string(".o"),
+    c_compiler_type                     -   string("gcc"),
+    csharp_compiler_type                -   string("mono"),
+                                        % The `mmc' script will override the
+                                        % default with a value determined at
+                                        % configuration time for the above
+                                        % two options
+    % Java
+    java_compiler                       -   string("javac"),
+    java_interpreter                    -   string("java"),
+    java_flags                          -   accumulating([]),
+    quoted_java_flag                    -   string_special,
+    java_classpath                      -   accumulating([]),
+    java_object_file_extension          -   string(".class"),
+
+    % IL
+    il_assembler                        -   string("ilasm"),
+    ilasm_flags                         -   accumulating([]),
+    quoted_ilasm_flag                   -   string_special,
+    dotnet_library_version              -   string("1.0.3300.0"),
+                                        % We default to the version of the
+                                        % library that came with Beta2.
+    support_ms_clr                      -   bool(yes),
+    support_rotor_clr                   -   bool(no),
+
+    % C#
+    csharp_compiler                     -   string("csc"),
+    csharp_flags                        -   accumulating([]),
+    quoted_csharp_flag                  -   string_special,
+    cli_interpreter                     -   string(""),
+
+    % Erlang
+    erlang_compiler                     -   string("erlc"),
+    erlang_interpreter                  -   string("erl"),
+    erlang_flags                        -   accumulating([]),
+    quoted_erlang_flag                  -   string_special,
+    erlang_include_directory            -   accumulating([]),
+    erlang_object_file_extension        -   string(".beam"),
+    erlang_native_code                  -   bool(no),
+    erlang_inhibit_trivial_warnings     -   bool(yes)
+]).
+option_defaults_2(link_option, [
+    % Link Options
+    output_file_name                    -   string(""),
+                                        % If the output_file_name is an empty
+                                        % string, we use the name of the first
+                                        % module on the command line.
+    ld_flags                            -   accumulating([]),
+    quoted_ld_flag                      -   string_special,
+    ld_libflags                         -   accumulating([]),
+    quoted_ld_libflag                   -   string_special,
+    link_library_directories            -   accumulating([]),
+    runtime_link_library_directories    -   accumulating([]),
+    link_libraries                      -   accumulating([]),
+    link_objects                        -   accumulating([]),
+    mercury_library_directory_special   -   string_special,
+    mercury_library_directories         -   accumulating([]),
+    search_library_files_directory_special - string_special,
+    search_library_files_directories    -   accumulating([]),
+    mercury_library_special             -   string_special,
+    mercury_libraries                   -   accumulating([]),
+    mercury_standard_library_directory  -   maybe_string(no),
+                                        % The Mercury.config file will set the
+                                        % default standard library directory.
+    mercury_standard_library_directory_special - maybe_string_special,
+    init_file_directories               -   accumulating([]),
+    init_files                          -   accumulating([]),
+    trace_init_files                    -   accumulating([]),
+    linkage                             -   string("shared"),
+    linkage_special                     -   string_special,
+    mercury_linkage                     -   string("shared"),
+    mercury_linkage_special             -   string_special,
+    demangle                            -   bool(yes),
+    strip                               -   bool(yes),
+    main                                -   bool(yes),
+    allow_undefined                     -   bool(yes),
+    use_readline                        -   bool(yes),
+    runtime_flags                       -   accumulating([]),
+    extra_initialization_functions      -   bool(no),
+    frameworks                          -   accumulating([]),
+    framework_directories               -   accumulating([]),
+
+    shared_library_extension            -   string(".so"),
+                                        % The `mmc' script will override the
+                                        % default with a value determined at
+                                        % configuration time.
+    library_extension                   -   string(".a"),
+    executable_file_extension           -   string(""),
+    link_executable_command             -   string("gcc"),
+    link_shared_lib_command             -   string("gcc -shared"),
+    create_archive_command              -   string("ar"),
+    create_archive_command_output_flag  -   string(""),
+    create_archive_command_flags        -   accumulating([]), % "cr"
+    ranlib_command                      -   string(""),
+    ranlib_flags                        -   string(""),
+    mkinit_command                      -   string("mkinit"),
+    mkinit_erl_command                  -   string("mkinit_erl"),
+    demangle_command                    -   string("mdemangle"),
+    filtercc_command                    -   string("mfiltercc"),
+    trace_libs                          -   string(""),
+    thread_libs                         -   string(""),
+    hwloc_libs                          -   string(""),
+    hwloc_static_libs                   -   string(""),
+    shared_libs                         -   string(""),
+    math_lib                            -   string(""),
+    readline_libs                       -   string(""),
+    linker_opt_separator                -   string(""),
+    linker_debug_flags                  -   string("-g"),
+    shlib_linker_debug_flags            -   string("-g"),
+    linker_trace_flags                  -   string("-g"),
+    shlib_linker_trace_flags            -   string("-g"),
+    linker_thread_flags                 -   string(""),
+    shlib_linker_thread_flags           -   string(""),
+    linker_static_flags                 -   string("-static"),
+    linker_strip_flag                   -   string("-s"),
+    linker_link_lib_flag                -   string("-l"),
+    linker_link_lib_suffix              -   string(""),
+    shlib_linker_link_lib_flag          -   string("-l"),
+    shlib_linker_link_lib_suffix        -   string(""),
+    linker_path_flag                    -   string("-L"),
+    linker_rpath_flag                   -   string("-Wl,-rpath"),
+    linker_rpath_separator              -   string(" -Wl,-rpath"),
+    shlib_linker_rpath_flag             -   string("-Wl,-rpath"),
+    shlib_linker_rpath_separator        -   string(" -Wl,-rpath"),
+    linker_allow_undefined_flag         -   string(""),
+    linker_error_undefined_flag         -   string("-Wl,-no-undefined"),
+    shlib_linker_use_install_name       -   bool(no),
+    shlib_linker_install_name_flag      -   string("-install_name "),
+    shlib_linker_install_name_path      -   string(""),
+    java_archive_command                -   string("jar")
+]).
+option_defaults_2(build_system_option, [
+    % Build System Options
+    make                                -   bool(no),
+    keep_going                          -   bool(no),
+    rebuild                             -   bool(no),
+    jobs                                -   int(1),
+    track_flags                         -   bool(no),
+    invoked_by_mmc_make                 -   bool(no),
+    pre_link_command                    -   maybe_string(no),
+    extra_init_command                  -   maybe_string(no),
+    install_prefix                      -   string("/usr/local/"),
+    use_symlinks                        -   bool(yes),
+
+    % If `--mercury-stdlib-dir' is set, `--mercury-config-dir'
+    % must also be set.  This invariant is maintained by the
+    % `special' variants of the options.
+    mercury_configuration_directory_special - string_special,
+    mercury_configuration_directory     -   maybe_string(no),
+    install_command                     -   string("cp"),
+    install_command_dir_option          -   string("-r"),
+    libgrades                           -   accumulating([]),
+    libgrades_include_components        -   accumulating([]),
+    libgrades_exclude_components        -   accumulating([]),
+    lib_linkages                        -   accumulating([]),
+    flags_file                          -   file_special,
+    options_files                       -   accumulating(["Mercury.options"]),
+
+    config_file                         -   maybe_string(yes("")),
+                                        % yes("") means unset.
+    options_search_directories          -   accumulating(["."]),
+    use_subdirs                         -   bool(no),
+    use_grade_subdirs                   -   bool(no),
+    search_directories                  -   accumulating(["."]),
+    intermod_directories                -   accumulating([]),
+    use_search_directories_for_intermod -   bool(yes),
+    libgrade_install_check              -   bool(yes),
+    order_make_by_timestamp             -   bool(no),
+    show_make_times                     -   bool(no),
+    extra_library_header                -   accumulating([]),
+    restricted_command_line             -   bool(no),
+    env_type                            -   string_special,
+    host_env_type                       -   string("posix"),
+    target_env_type                     -   string("posix")
+]).
+option_defaults_2(miscellaneous_option, [
+    % Miscellaneous Options
+    filenames_from_stdin                -   bool(no),
+    typecheck_ambiguity_warn_limit      -   int(50),
+    typecheck_ambiguity_error_limit     -   int(3000),
+    help                                -   bool(no),
+    version                             -   bool(no),
+    fullarch                            -   string(""),
+    cross_compiling                     -   bool(no),
+    local_module_id                     -   accumulating([]),
+    analysis_file_cache_dir             -   string(""),
+    compiler_sufficiently_recent        -   bool(no),
+    experiment                          -   string(""),
+    ignore_par_conjunctions             -   bool(no),
+    control_granularity                 -   bool(no),
+    distance_granularity                -   int(0),
+    implicit_parallelism                -   bool(no),
+    feedback_file                       -   string(""),
+    par_loop_control                    -   bool(no),
+    par_loop_control_preserve_tail_recursion - bool(no)
+]).
+
+    % please keep this in alphabetic order
+short_option('c', compile_only).
+short_option('C', target_code_only).
+short_option('d', dump_hlds).
+short_option('D', dump_hlds_alias).
+short_option('e', errorcheck_only).
+short_option('E', verbose_errors).
+short_option('f', generate_source_file_mapping).
+short_option('F', framework_directories).
+short_option('h', help).
+short_option('H', highlevel_code).
+short_option('i', make_interface).
+short_option('j', jobs).
+short_option('I', search_directories).
+short_option('k', keep_going).
+short_option('l', link_libraries).
+short_option('L', link_library_directories).
+short_option('m', make).
+short_option('M', generate_dependencies).
+short_option('n', line_numbers).
+short_option('N', debug_modes).
+short_option('o', output_file_name).
+short_option('O', opt_level).
+short_option('p', profiling).
+short_option('P', convert_to_mercury).
+short_option('r', rebuild).
+short_option('R', runtime_link_library_directories).
+short_option('s', grade).
+short_option('S', statistics).
+short_option('T', debug_types).
+short_option('t', typecheck_only).
+short_option('v', verbose).
+short_option('V', very_verbose).
+short_option('w', inhibit_warnings).
+short_option('x', make_xml_documentation).
+short_option('?', help).
+
+% warning options
+long_option("inhibit-warnings",         inhibit_warnings).
+long_option("inhibit-accumulator-warnings", inhibit_accumulator_warnings).
+long_option("halt-at-warn",             halt_at_warn).
+long_option("halt-at-syntax-errors",    halt_at_syntax_errors).
+long_option("halt-at-auto-parallel-failure", halt_at_auto_parallel_failure).
+long_option("warn-singleton-variables", warn_singleton_vars).
+long_option("warn-overlapping-scopes",  warn_overlapping_scopes).
+long_option("warn-det-decls-too-lax",   warn_det_decls_too_lax).
+long_option("warn-inferred-erroneous",  warn_inferred_erroneous).
+long_option("warn-nothing-exported",    warn_nothing_exported).
+long_option("warn-unused-args",         warn_unused_args).
+long_option("warn-interface-imports",   warn_interface_imports).
+long_option("warn-non-contiguous-clauses",  warn_non_contiguous_clauses).
+long_option("warn-non-contiguous-foreign-procs",
+                                        warn_non_contiguous_foreign_procs).
+long_option("warn-non-stratification",  warn_non_stratification).
+long_option("warn-missing-opt-files",   warn_missing_opt_files).
+long_option("warn-missing-trans-opt-files", warn_missing_trans_opt_files).
+long_option("warn-missing-trans-opt-deps",  warn_missing_trans_opt_deps).
+long_option("warn-unification-cannot-succeed",
+                                        warn_unification_cannot_succeed).
+long_option("warn-simple-code",         warn_simple_code).
+long_option("warn-duplicate-calls",     warn_duplicate_calls).
+long_option("warn-missing-module-name", warn_missing_module_name).
+long_option("warn-wrong-module-name",   warn_wrong_module_name).
+long_option("warn-smart-recompilation", warn_smart_recompilation).
+long_option("warn-undefined-options-variables",
+                    warn_undefined_options_variables).
+long_option("warn-non-tail-recursion",  warn_non_tail_recursion).
+long_option("warn-target-code",         warn_target_code).
+long_option("warn-up-to-date",          warn_up_to_date).
+long_option("warn-stubs",               warn_stubs).
+long_option("warn-dead-procs",          warn_dead_procs).
+long_option("warn-table-with-inline",   warn_table_with_inline).
+long_option("warn-non-term-special-preds", warn_non_term_special_preds).
+long_option("warn-known-bad-format-calls", warn_known_bad_format_calls).
+long_option("warn-unknown-format-calls", warn_unknown_format_calls).
+long_option("warn-obsolete",             warn_obsolete).
+long_option("warn-insts-without-matching-type",
+                                        warn_insts_without_matching_type).
+long_option("warn-unused-imports",      warn_unused_imports).
+long_option("inform-ite-instead-of-switch", inform_ite_instead_of_switch).
+long_option("warn-unresolved-polymorphism", warn_unresolved_polymorphism).
+long_option("warn-suspicious-foreign-procs", warn_suspicious_foreign_procs).
+long_option("warn-state-var-shadowing", warn_state_var_shadowing).
+long_option("inform-inferred",          inform_inferred).
+long_option("inform-inferred-types",    inform_inferred_types).
+long_option("inform-inferred-modes",    inform_inferred_modes).
+
+% verbosity options
+long_option("verbose",                  verbose).
+long_option("very-verbose",             very_verbose).
+long_option("verbose-error-messages",   verbose_errors).
+long_option("verbose-recompilation",    verbose_recompilation).
+long_option("find-all-recompilation-reasons",
+                                        find_all_recompilation_reasons).
+long_option("verbose-make",             verbose_make).
+long_option("verbose-commands",         verbose_commands).
+long_option("output-compile-error-lines",   output_compile_error_lines).
+long_option("report-cmd-line-args",     report_cmd_line_args).
+long_option("report-cmd-line-args-in-doterr",
+                                        report_cmd_line_args_in_doterr).
+long_option("statistics",               statistics).
+long_option("detailed-statistics",      detailed_statistics).
+long_option("proc-size-statistics",     proc_size_statistics).
+long_option("debug-types",              debug_types).
+long_option("debug-modes",              debug_modes).
+long_option("debug-modes-statistics",   debug_modes_statistics).
+long_option("debug-modes-minimal",      debug_modes_minimal).
+long_option("debug-modes-verbose",      debug_modes_verbose).
+long_option("debug-modes-pred-id",      debug_modes_pred_id).
+long_option("debug-dep-par-conj",       debug_dep_par_conj).
+long_option("debug-determinism",        debug_det).
+long_option("debug-det",                debug_det).
+long_option("debug-code-gen-pred-id",   debug_code_gen_pred_id).
+long_option("debug-termination",        debug_term).
+long_option("debug-term",               debug_term).
+long_option("debug-opt",                debug_opt).
+long_option("debug-opt-pred-id",        debug_opt_pred_id).
+long_option("debug-opt-pred-name",      debug_opt_pred_name).
+long_option("debug-pd",                 debug_pd).
+    % debug-il-asm does very low-level printf style debugging of
+    % IL assembler.  Each instruction is written on stdout before it
+    % is executed.  It is a temporary measure until the IL debugging
+    % system built into .NET improves.
+long_option("debug-il-asm",             debug_il_asm).
+long_option("debug-liveness",           debug_liveness).
+long_option("debug-stack-opt",          debug_stack_opt).
+long_option("debug-make",               debug_make).
+long_option("debug-closure",            debug_closure).
+long_option("debug-trail-usage",        debug_trail_usage).
+long_option("debug-mode-constraints",   debug_mode_constraints).
+long_option("debug-intermodule-analysis",   debug_intermodule_analysis).
+long_option("debug-mm-tabling-analysis",    debug_mm_tabling_analysis).
+long_option("debug-indirect-reuse",         debug_indirect_reuse).
+long_option("debug-type-rep",               debug_type_rep).
+
+% output options (mutually exclusive)
+long_option("generate-source-file-mapping", generate_source_file_mapping).
+long_option("generate-dependency-file", generate_dependency_file).
+long_option("generate-dependencies",    generate_dependencies).
+long_option("generate-module-order",    generate_module_order).
+long_option("generate-standalone-interface", generate_standalone_interface).
+long_option("make-short-interface",     make_short_interface).
+long_option("make-short-int",           make_short_interface).
+long_option("make-interface",           make_interface).
+long_option("make-int",                 make_interface).
+long_option("make-private-interface",   make_private_interface).
+long_option("make-priv-int",            make_private_interface).
+long_option("make-optimization-interface", make_optimization_interface).
+long_option("make-optimisation-interface", make_optimization_interface).
+long_option("make-opt-int",             make_optimization_interface).
+long_option("make-transitive-optimization-interface",
+                                        make_transitive_opt_interface).
+long_option("make-transitive-optimisation-interface",
+                                        make_transitive_opt_interface).
+long_option("make-trans-opt",           make_transitive_opt_interface).
+long_option("make-analysis-registry",   make_analysis_registry).
+long_option("make-xml-doc",             make_xml_documentation).
+long_option("make-xml-documentation",   make_xml_documentation).
+long_option("convert-to-mercury",       convert_to_mercury).
+long_option("convert-to-Mercury",       convert_to_mercury).
+long_option("pretty-print",             convert_to_mercury).
+long_option("typecheck-only",           typecheck_only).
+long_option("errorcheck-only",          errorcheck_only).
+long_option("target-code-only",         target_code_only).
+long_option("compile-only",             compile_only).
+long_option("compile-to-shared-lib",    compile_to_shared_lib).
+long_option("output-grade-string",      output_grade_string).
+long_option("output-link-command",      output_link_command).
+long_option("output-shared-lib-link-command", output_shared_lib_link_command).
+long_option("output-libgrades",         output_libgrades).
+long_option("output-cc",                output_cc).
+long_option("output-cc-type",           output_c_compiler_type).
+long_option("output-c-compiler-type",   output_c_compiler_type).
+long_option("output-csharp-compiler-type", output_csharp_compiler_type).
+long_option("output-cflags",            output_cflags).
+long_option("output-library-link-flags",    output_library_link_flags).
+long_option("output-grade-defines",     output_grade_defines).
+long_option("output-c-include-directory-flags",
+    output_c_include_directory_flags).
+long_option("output-c-include-dir-flags",
+    output_c_include_directory_flags).
+
+% aux output options
+long_option("smart-recompilation",      smart_recompilation).
+long_option("assume-gmake",             assume_gmake).
+long_option("generate-mmc-make-module-dependencies",
+                                        generate_mmc_make_module_dependencies).
+long_option("generate-mmc-deps",        generate_mmc_make_module_dependencies).
+long_option("ssdb-trace",               ssdb_trace_level).
+long_option("link-ssdb-libs",           link_ssdb_libs).
+long_option("link-ssdebug-libs",        link_ssdb_libs).
+long_option("trace",                    trace_level).
+long_option("trace-optimised",          trace_optimized).
+long_option("trace-optimized",          trace_optimized).
+long_option("trace-prof",               trace_prof).
+long_option("trace-table-io",           trace_table_io).
+long_option("trace-table-io-only-retry",    trace_table_io_only_retry).
+long_option("trace-table-io-states",    trace_table_io_states).
+long_option("trace-table-io-require",   trace_table_io_require).
+long_option("trace-table-io-all",       trace_table_io_all).
+long_option("trace-flag",               trace_goal_flags).
+long_option("profile-optimised",        prof_optimized).
+long_option("profile-optimized",        prof_optimized).
+long_option("exec-trace-tail-rec",      exec_trace_tail_rec).
+long_option("suppress-trace",           suppress_trace).
+long_option("force-disable-tracing",    force_disable_tracing).
+long_option("delay-death",              delay_death).
+long_option("delay-death-max-vars",     delay_death_max_vars).
+long_option("stack-trace-higher-order", stack_trace_higher_order).
+long_option("force-disable-ssdebug",    force_disable_ssdebug).
+long_option("generate-bytecode",        generate_bytecode).
+long_option("line-numbers",             line_numbers).
+long_option("auto-comments",            auto_comments).
+long_option("frameopt-comments",        frameopt_comments).
+long_option("max-error-line-width",     max_error_line_width).
+long_option("show-dependency-graph",    show_dependency_graph).
+long_option("imports-graph",            imports_graph).
+long_option("dump-trace-counts",        dump_trace_counts).
+long_option("dump-hlds",                dump_hlds).
+long_option("hlds-dump",                dump_hlds).
+long_option("dump-hlds-pred-id",        dump_hlds_pred_id).
+long_option("dump-hlds-pred-name",      dump_hlds_pred_name).
+long_option("dump-hlds-alias",          dump_hlds_alias).
+long_option("dump-hlds-options",        dump_hlds_options).
+long_option("dump-hlds-inst-limit",     dump_hlds_inst_limit).
+long_option("dump-hlds-file-suffix",    dump_hlds_file_suffix).
+long_option("dump-same-hlds",           dump_same_hlds).
+long_option("dump-mlds",                dump_mlds).
+long_option("mlds-dump",                dump_mlds).
+long_option("verbose-dump-mlds",        verbose_dump_mlds).
+long_option("verbose-mlds-dump",        verbose_dump_mlds).
+long_option("sign-assembly",            sign_assembly).
+long_option("separate-assemblies",      separate_assemblies).
+long_option("mode-constraints",         mode_constraints).
+long_option("simple-mode-constraints",  simple_mode_constraints).
+long_option("prop-mode-constraints",    prop_mode_constraints).
+long_option("propagate-mode-constraints",   prop_mode_constraints).
+long_option("benchmark-modes",          benchmark_modes).
+long_option("benchmark-modes-repeat",   benchmark_modes_repeat).
+
+% language semantics options
+long_option("reorder-conj",         reorder_conj).
+long_option("reorder-disj",         reorder_disj).
+long_option("fully-strict",         fully_strict).
+long_option("strict-sequential",    strict_sequential).
+long_option("allow-stubs",          allow_stubs).
+long_option("infer-all",            infer_all).
+long_option("infer-types",          infer_types).
+long_option("infer-modes",          infer_modes).
+long_option("infer-determinism",    infer_det).
+long_option("infer-det",            infer_det).
+long_option("type-inference-iteration-limit", type_inference_iteration_limit).
+long_option("mode-inference-iteration-limit", mode_inference_iteration_limit).
+long_option("event-set-file-name",  event_set_file_name).
+
+% compilation model options
+long_option("grade",                grade).
+% target selection options
+long_option("target",               target).
+long_option("il",                   il).
+long_option("il-only",              il_only).
+long_option("IL-only",              il_only).
+long_option("compile-to-c",         compile_to_c).
+long_option("compile-to-C",         compile_to_c).
+long_option("java",                 java).
+long_option("Java",                 java).
+long_option("java-only",            java_only).
+long_option("Java-only",            java_only).
+long_option("csharp",               csharp).
+long_option("C#",                   csharp).
+long_option("csharp-only",          csharp_only).
+long_option("C#-only",              csharp_only).
+long_option("x86_64",               x86_64).
+long_option("x86-64",               x86_64).
+long_option("x86_64-only",          x86_64_only).
+long_option("x86-64-only",          x86_64_only).
+long_option("erlang",               erlang).
+long_option("Erlang",               erlang).
+long_option("erlang-only",          erlang_only).
+long_option("Erlang-only",          erlang_only).
+% Optional features compilation model options:
+% (a) debugging
+long_option("debug",                exec_trace).
+long_option("decl-debug",           decl_debug).
+long_option("ssdb",                 source_to_source_debug).
+long_option("ss-debug",             source_to_source_debug).
+long_option("source-to-source-debug", source_to_source_debug).
+    % (b) profiling
+long_option("profiling",            profiling).
+long_option("time-profiling",       time_profiling).
+long_option("memory-profiling",     memory_profiling).
+long_option("deep-profiling",       deep_profiling).
+long_option("profile-calls",        profile_calls).
+long_option("profile-time",         profile_time).
+long_option("profile-memory",       profile_memory).
+long_option("profile-deep",         profile_deep).
+long_option("use-activation-counts",    use_activation_counts).
+long_option("pre-prof-transforms-simplify", pre_prof_transforms_simplify).
+long_option("pre-implicit-parallelism-simplify",
+    pre_implicit_parallelism_simplify).
+long_option("coverage-profiling",
+                    coverage_profiling).
+long_option("coverage-profiling-via-calls",
+                    coverage_profiling_via_calls).
+long_option("coverage-profiling-static",
+                    coverage_profiling_static).
+long_option("profile-deep-coverage-after-goal",
+                    profile_deep_coverage_after_goal).
+long_option("profile-deep-coverage-branch-ite",
+                    profile_deep_coverage_branch_ite).
+long_option("profile-deep-coverage-branch-switch",
+                    profile_deep_coverage_branch_switch).
+long_option("profile-deep-coverage-branch-disj",
+                    profile_deep_coverage_branch_disj).
+long_option("profile-deep-coverage-use-portcounts",
+                    profile_deep_coverage_use_portcounts).
+long_option("profile-deep-coverage-use-trivial",
+                    profile_deep_coverage_use_trivial).
+long_option("profile-for-implicit-parallelism",
+                    profile_for_feedback).
+long_option("profile-for-feedback",
+                    profile_for_feedback).
+long_option("use-zeroing-for-ho-cycles",
+                    use_zeroing_for_ho_cycles).
+long_option("use-lots-of-ho-specialization",
+                    use_lots_of_ho_specialization).
+long_option("deep-profile-tail-recursion",
+                    deep_profile_tail_recursion).
+long_option("record-term-sizes-as-words", record_term_sizes_as_words).
+long_option("record-term-sizes-as-cells", record_term_sizes_as_cells).
+long_option("experimental-complexity",  experimental_complexity).
+long_option("region-analysis",      region_analysis).
+% (c) miscellaneous optional features
+long_option("gc",                   gc).
+long_option("garbage-collection",   gc).
+long_option("parallel",             parallel).
+long_option("use-trail",            use_trail).
+long_option("trail-segments",       trail_segments).
+long_option("type-layout",          type_layout).
+long_option("maybe-thread-safe",    maybe_thread_safe_opt).
+long_option("extend-stacks-when-needed",    extend_stacks_when_needed).
+long_option("stack-segments",       stack_segments).
+long_option("use-regions",          use_regions).
+long_option("use-alloc-regions",    use_alloc_regions).
+long_option("use-regions-debug",    use_regions_debug).
+long_option("use-regions-profiling",use_regions_profiling).
+% Data representation options
+long_option("use-minimal-model-stack-copy", use_minimal_model_stack_copy).
+long_option("use-minimal-model-own-stacks", use_minimal_model_own_stacks).
+long_option("minimal-model-debug",  minimal_model_debug).
+long_option("single-prec-float",    single_prec_float).
+long_option("single-precision-float",   single_prec_float).
+long_option("pic-reg",              pic_reg).
+long_option("tags",                 tags).
+long_option("num-tag-bits",         num_tag_bits).
+long_option("num-reserved-addresses",   num_reserved_addresses).
+long_option("num-reserved-objects", num_reserved_objects).
+long_option("bits-per-word",        bits_per_word).
+long_option("bytes-per-word",       bytes_per_word).
+long_option("conf-low-tag-bits",    conf_low_tag_bits).
+long_option("sync-term-size",       sync_term_size).
+long_option("unboxed-float",        unboxed_float).
+long_option("unboxed-enums",        unboxed_enums).
+long_option("unboxed-no-tag-types", unboxed_no_tag_types).
+long_option("highlevel-data",       highlevel_data).
+long_option("high-level-data",      highlevel_data).
+% LLDS back-end compilation model options
+long_option("gcc-non-local-gotos",  gcc_non_local_gotos).
+long_option("gcc-global-registers", gcc_global_registers).
+long_option("asm-labels",           asm_labels).
+long_option("use-float-registers",  use_float_registers).
+% MLDS back-end compilation model options
+long_option("highlevel-code",       highlevel_code).
+long_option("high-level-code",      highlevel_code).
+long_option("highlevel-C",          highlevel_code).
+long_option("highlevel-c",          highlevel_code).
+long_option("high-level-C",         highlevel_code).
+long_option("high-level-c",         highlevel_code).
+long_option("gcc-nested-functions", gcc_nested_functions).
+long_option("det-copy-out",         det_copy_out).
+long_option("nondet-copy-out",      nondet_copy_out).
+long_option("put-commit-in-own-func",   put_commit_in_own_func).
+long_option("put-nondet-env-on-heap",   put_nondet_env_on_heap).
+% IL back-end compilation model options
+long_option("verifiable-code",      verifiable_code).
+long_option("verifiable",           verifiable_code).
+long_option("il-funcptr-types",     il_funcptr_types).
+long_option("IL-funcptr-types",     il_funcptr_types).
+long_option("il-refany-fields",     il_refany_fields).
+long_option("IL-refany-fields",     il_refany_fields).
+long_option("il-byref-tailcalls",   il_byref_tailcalls).
+long_option("IL-byref-tailcalls",   il_byref_tailcalls).
+
+% internal use options
+long_option("backend-foreign-languages", backend_foreign_languages).
+long_option("agc-stack-layout",     agc_stack_layout).
+long_option("basic-stack-layout",   basic_stack_layout).
+long_option("procid-stack-layout",  procid_stack_layout).
+long_option("trace-stack-layout",   trace_stack_layout).
+long_option("body-typeinfo-liveness",   body_typeinfo_liveness).
+long_option("can-compare-constants-as-ints",    can_compare_constants_as_ints).
+long_option("pretest-equality-cast-pointers",   pretest_equality_cast_pointers).
+long_option("can-compare-compound-values",      can_compare_compound_values).
+long_option("lexically-order-constructors",
+                                    lexically_order_constructors).
+long_option("mutable-always-boxed", mutable_always_boxed).
+long_option("delay-partial-instantiations", delay_partial_instantiations).
+long_option("allow-defn-of-builtins",           allow_defn_of_builtins).
+long_option("special-preds",        special_preds).
+long_option("type-ctor-info",       type_ctor_info).
+long_option("type-ctor-layout",     type_ctor_layout).
+long_option("type-ctor-functors",   type_ctor_functors).
+long_option("new-type-class-rtti",  new_type_class_rtti).
+long_option("rtti-line-numbers",    rtti_line_numbers).
+long_option("disable-mm-pneg",      disable_minimal_model_stack_copy_pneg).
+long_option("disable-mm-cut",       disable_minimal_model_stack_copy_cut).
+long_option("disable-trail-ops",    disable_trail_ops).
+long_option("size-region-ite-fixed",            size_region_ite_fixed).
+long_option("size-region-disj-fixed",           size_region_disj_fixed).
+long_option("size-region-commit-fixed",         size_region_commit_fixed).
+long_option("size-region-ite-protect",          size_region_ite_protect).
+long_option("size-region-ite-snapshot",         size_region_ite_snapshot).
+long_option("size-region-semi-disj-protect",    size_region_semi_disj_protect).
+long_option("size-region-disj-snapshot",        size_region_disj_snapshot).
+long_option("size-region-commit-entry",         size_region_commit_entry).
+long_option("solver-type-auto-init",    solver_type_auto_init).
+long_option("allow-multi-arm-switches", allow_multi_arm_switches).
+long_option("type-check-constraints",   type_check_constraints).
+long_option("allow-argument-packing",   allow_argument_packing).
+
+% code generation options
+long_option("low-level-debug",      low_level_debug).
+long_option("table-debug",          table_debug).
+long_option("polymorphism",         polymorphism).
+long_option("trad-passes",          trad_passes).
+long_option("parallel-liveness",    parallel_liveness).
+long_option("parallel-code-gen",    parallel_code_gen).
+long_option("reclaim-heap-on-failure",  reclaim_heap_on_failure).
+long_option("reclaim-heap-on-semidet-failure",
+                                    reclaim_heap_on_semidet_failure).
+long_option("reclaim-heap-on-nondet-failure",
+                                    reclaim_heap_on_nondet_failure).
+long_option("branch-delay-slot",    have_delay_slot).
+long_option("have-delay-slot",      have_delay_slot).
+long_option("num-real-r-regs",      num_real_r_regs).
+long_option("num-real-f-regs",      num_real_f_regs).
+long_option("num-real-r-temps",     num_real_r_temps).
+long_option("num-real-f-temps",     num_real_f_temps).
+long_option("num-real-temps",       num_real_r_temps).  % obsolete
+long_option("max-jump-table-size",  max_jump_table_size).
+% long_option("max-spec-do-call-closure",
+%                   max_specialized_do_call_closure).
+% long_option("max-spec-do-call-class-method",
+%                   max_specialized_do_call_class_method).
+long_option("compare-specialization",   compare_specialization).
+long_option("should-pretest-equality",  should_pretest_equality).
+long_option("fact-table-max-array-size",fact_table_max_array_size).
+long_option("fact-table-hash-percent-full",
+                    fact_table_hash_percent_full).
+long_option("gcc-local-labels",     gcc_local_labels).
+long_option("prefer-switch",        prefer_switch).
+long_option("opt-no-return-calls",  opt_no_return_calls).
+
+% optimization options
+
+long_option("opt-level",            opt_level).
+long_option("optimization-level",   opt_level).
+long_option("optimisation-level",   opt_level).
+long_option("opt-space",            opt_space).
+long_option("optimize-space",       opt_space).
+long_option("optimise-space",       opt_space).
+long_option("intermod-opt",        intermodule_optimization).
+long_option("intermodule-optimization", intermodule_optimization).
+long_option("intermodule-optimisation", intermodule_optimization).
+long_option("read-opt-files-transitively", read_opt_files_transitively).
+long_option("use-opt-files",        use_opt_files).
+long_option("use-trans-opt-files",  use_trans_opt_files).
+long_option("transitive-intermodule-optimization",
+                    transitive_optimization).
+long_option("transitive-intermodule-optimisation",
+                    transitive_optimization).
+long_option("trans-intermod-opt",   transitive_optimization).
+long_option("intermodule-analysis", intermodule_analysis).
+long_option("analysis-repeat",      analysis_repeat).
+long_option("analysis-file-cache",  analysis_file_cache).
+
+% HLDS->HLDS optimizations
+long_option("inlining",             inlining).
+long_option("inline-simple",        inline_simple).
+long_option("inline-builtins",      inline_builtins).
+long_option("inline-single-use",    inline_single_use).
+long_option("inline-call-cost",     inline_call_cost).
+long_option("inline-compound-threshold",    inline_compound_threshold).
+long_option("inline-simple-threshold",      inline_simple_threshold).
+long_option("intermod-inline-simple-threshold",
+                                    intermod_inline_simple_threshold).
+long_option("from-ground-term-threshold",
+                                    from_ground_term_threshold).
+long_option("inline-vars-threshold",        inline_vars_threshold).
+long_option("const-struct",         enable_const_struct).
+long_option("common-struct",        common_struct).
+long_option("common-struct-preds",  common_struct_preds).
+long_option("common-goal",          common_goal).
+long_option("excess-assign",        excess_assign).
+long_option("optimize-format-calls",         optimize_format_calls).
+long_option("optimize-duplicate-calls", optimize_duplicate_calls).
+long_option("optimise-duplicate-calls", optimize_duplicate_calls).
+long_option("optimise-constant-propagation", constant_propagation).
+long_option("optimize-constant-propagation", constant_propagation).
+long_option("optimize-saved-vars",  optimize_saved_vars).
+long_option("optimise-saved-vars",  optimize_saved_vars).
+long_option("loop-invariants",      loop_invariants).
+long_option("optimize-saved-vars-const",    optimize_saved_vars_const).
+long_option("optimise-saved-vars-const",    optimize_saved_vars_const).
+long_option("optimize-saved-vars-cell", optimize_saved_vars_cell).
+long_option("optimise-saved-vars-cell", optimize_saved_vars_cell).
+long_option("osv-loop",             optimize_saved_vars_cell_loop).
+long_option("osv-full-path",        optimize_saved_vars_cell_full_path).
+long_option("osv-on-stack",         optimize_saved_vars_cell_on_stack).
+long_option("osv-cand-head",
+                            optimize_saved_vars_cell_candidate_headvars).
+% The next four options are used by tupling.m as well; changes to them
+% may require changes there as well.
+long_option("osv-cvstore-cost",     optimize_saved_vars_cell_cv_store_cost).
+long_option("osv-cvload-cost",      optimize_saved_vars_cell_cv_load_cost).
+long_option("osv-fvstore-cost",     optimize_saved_vars_cell_fv_store_cost).
+long_option("osv-fvload-cost",      optimize_saved_vars_cell_fv_load_cost).
+long_option("osv-op-ratio",         optimize_saved_vars_cell_op_ratio).
+long_option("osv-node-ratio",       optimize_saved_vars_cell_node_ratio).
+long_option("osv-allpath-node-ratio",
+                            optimize_saved_vars_cell_all_path_node_ratio).
+long_option("osv-all-cand",
+                            optimize_saved_vars_cell_include_all_candidates).
+long_option("delay-construct",      delay_construct).
+long_option("delay-constructs",     delay_construct).
+long_option("follow-code",          follow_code).
+long_option("constraint-propagation",   constraint_propagation).
+long_option("local-constraint-propagation", local_constraint_propagation).
+long_option("optimize-unused-args", optimize_unused_args).
+long_option("optimise-unused-args", optimize_unused_args).
+long_option("intermod-unused-args", intermod_unused_args).
+long_option("optimize-higher-order",    optimize_higher_order).
+long_option("optimise-higher-order",    optimize_higher_order).
+long_option("higher-order-size-limit",  higher_order_size_limit).
+long_option("higher-order-arg-limit",   higher_order_arg_limit).
+long_option("unneeded-code",        unneeded_code).
+long_option("unneeded-code-copy-limit", unneeded_code_copy_limit).
+long_option("unneeded-code-debug",  unneeded_code_debug).
+long_option("unneeded-code-debug-pred-name",  unneeded_code_debug_pred_name).
+long_option("type-specialization",  type_specialization).
+long_option("type-specialisation",  type_specialization).
+long_option("user-guided-type-specialization",
+                    user_guided_type_specialization).
+long_option("user-guided-type-specialisation",
+                    user_guided_type_specialization).
+% This option is for use in configure.in to test for some bug-fixes for
+% type-specialization which are needed to compile the library. It's not
+% documented, and should eventually be removed.
+long_option("fixed-user-guided-type-specialization",
+                    user_guided_type_specialization).
+long_option("introduce-accumulators",   introduce_accumulators).
+long_option("optimise-constructor-last-call-accumulator",
+                    optimize_constructor_last_call_accumulator).
+long_option("optimize-constructor-last-call-accumulator",
+                    optimize_constructor_last_call_accumulator).
+long_option("optimise-constructor-last-call-null",
+                    optimize_constructor_last_call_null).
+long_option("optimize-constructor-last-call-null",
+                    optimize_constructor_last_call_null).
+long_option("optimise-constructor-last-call",
+                    optimize_constructor_last_call).
+long_option("optimize-constructor-last-call",
+                    optimize_constructor_last_call).
+long_option("optimize-dead-procs",  optimize_dead_procs).
+long_option("optimise-dead-procs",  optimize_dead_procs).
+long_option("deforestation",        deforestation).
+long_option("deforestation-depth-limit",    deforestation_depth_limit).
+long_option("deforestation-cost-factor",    deforestation_cost_factor).
+long_option("deforestation-vars-threshold", deforestation_vars_threshold).
+long_option("deforestation-size-threshold", deforestation_size_threshold).
+long_option("enable-termination",   termination).
+long_option("enable-term",          termination).
+long_option("check-termination",    termination_check).
+long_option("check-term",           termination_check).
+long_option("chk-term",             termination_check).
+long_option("verbose-check-termination",verbose_check_termination).
+long_option("verb-check-term",      verbose_check_termination).
+long_option("verb-chk-term",        verbose_check_termination).
+long_option("termination-single-argument-analysis",
+                    termination_single_args).
+long_option("term-single-arg",      termination_single_args).
+long_option("termination-norm",     termination_norm).
+long_option("term-norm",            termination_norm).
+long_option("termination-error-limit",  termination_error_limit).
+long_option("term-err-limit",       termination_error_limit).
+long_option("termination-path-limit",   termination_path_limit).
+long_option("term-path-limit",      termination_path_limit).
+long_option("enable-termination2",  termination2).
+long_option("enable-term2",         termination2).
+long_option("check-termination2",   check_termination2).
+long_option("check-term2",          check_termination2).
+long_option("chk-term2",            check_termination2).
+long_option("verbose-check-termination2",verbose_check_termination2).
+long_option("verb-check-term2",     verbose_check_termination2).
+long_option("verb-chk-term2",       verbose_check_termination2).
+long_option("termination2-widening-limit", widening_limit).
+long_option("term2-widening-limit",     widening_limit).
+long_option("arg-size-analysis-only",   arg_size_analysis_only).
+long_option("termination2-propagate-failure-constraints",
+                    propagate_failure_constrs).
+long_option("term2-propagate-failure-constraints",
+                    propagate_failure_constrs).
+long_option("term2-propagate-failure-constrs", propagate_failure_constrs).
+long_option("termination2-norm", termination2_norm).
+long_option("term2-norm", termination2_norm).
+long_option("termination2-maximum-matrix-size", term2_maximum_matrix_size).
+long_option("term2-max-matrix-size", term2_maximum_matrix_size).
+long_option("analyse-exceptions",   analyse_exceptions).
+long_option("analyse-closures",     analyse_closures).
+long_option("analyse-local-closures",   analyse_closures).
+long_option("analyse-trail-usage",  analyse_trail_usage).
+long_option("optimize-trail-usage", optimize_trail_usage).
+long_option("optimize-region-ops",  optimize_region_ops).
+long_option("analyse-mm-tabling",   analyse_mm_tabling).
+long_option("untuple",              untuple).
+long_option("tuple",                tuple).
+long_option("tuple-trace-counts-file",  tuple_trace_counts_file).
+long_option("tuple-costs-ratio",    tuple_costs_ratio).
+long_option("tuple-min-args",       tuple_min_args).
+long_option("inline-par-builtins",  inline_par_builtins).
+long_option("always-specialize-in-dep-par-conjs",
+                                    always_specialize_in_dep_par_conjs).
+long_option("allow-some-paths-only-waits",
+                                    allow_some_paths_only_waits).
+
+% CTGC related options.
+long_option("structure-sharing",    structure_sharing_analysis).
+long_option("structure-sharing-widening", structure_sharing_widening).
+long_option("structure-reuse",      structure_reuse_analysis).
+long_option("ctgc",                 structure_reuse_analysis).
+long_option("structure-reuse-constraint", structure_reuse_constraint).
+long_option("ctgc-constraint",      structure_reuse_constraint).
+long_option("structure-reuse-constraint-arg", structure_reuse_constraint_arg).
+long_option("ctgc-constraint-arg",  structure_reuse_constraint_arg).
+long_option("structure-reuse-max-conditions", structure_reuse_max_conditions).
+long_option("structure-reuse-repeat", structure_reuse_repeat).
+long_option("structure-reuse-free-cells", structure_reuse_free_cells).
+
+% HLDS->LLDS optimizations
+long_option("smart-indexing",       smart_indexing).
+long_option("dense-switch-req-density", dense_switch_req_density).
+long_option("lookup-switch-req-density",lookup_switch_req_density).
+long_option("dense-switch-size",    dense_switch_size).
+long_option("lookup-switch-size",   lookup_switch_size).
+long_option("string-switch-size",   string_hash_switch_size).
+long_option("string-hash-switch-size",      string_hash_switch_size).
+long_option("string-binary-switch-size",    string_binary_switch_size).
+long_option("tag-switch-size",      tag_switch_size).
+long_option("try-switch-size",      try_switch_size).
+long_option("binary-switch-size",   binary_switch_size).
+long_option("switch-single-rec-base-first", switch_single_rec_base_first).
+long_option("switch-multi-rec-base-first",  switch_multi_rec_base_first).
+long_option("static-ground-terms",  static_ground_cells).
+% static_ground_floats should be set only in handle_options.m.
+% long_option("static-ground-floats", static_ground_floats).
+% static_code_addresses should be set only in handle_options.m.
+% long_option("static-code-addresses", static_code_addresses).
+long_option("use-atomic-cells",     use_atomic_cells).
+long_option("middle-rec",           middle_rec).
+long_option("simple-neg",           simple_neg).
+long_option("allow-hijacks",        allow_hijacks).
+
+% MLDS optimizations
+% Option `optimize' is used for both MLDS and LLDS optimizations, but since
+% you can't use both at the same time it doesn't really matter.
+long_option("mlds-optimize",        optimize).
+long_option("mlds-optimise",        optimize).
+long_option("mlds-peephole",        optimize_peep).
+long_option("optimize-tailcalls",   optimize_tailcalls).
+long_option("optimise-tailcalls",   optimize_tailcalls).
+long_option("optimize-initializations", optimize_initializations).
+long_option("optimise-initializations", optimize_initializations).
+long_option("eliminate-local-vars", eliminate_local_vars).
+long_option("generate-trail-ops-inline", generate_trail_ops_inline).
+
+% LLDS optimizations
+long_option("common-data",          common_data).
+long_option("common-layout-data",   common_layout_data).
+long_option("llds-optimize",        optimize).
+long_option("llds-optimise",        optimize).
+long_option("optimize-peep",        optimize_peep).
+long_option("optimise-peep",        optimize_peep).
+long_option("optimize-peep-mkword", optimize_peep_mkword).
+long_option("optimise-peep-mkword", optimize_peep_mkword).
+long_option("optimize-jumps",       optimize_jumps).
+long_option("optimise-jumps",       optimize_jumps).
+long_option("optimize-fulljumps",   optimize_fulljumps).
+long_option("optimise-fulljumps",   optimize_fulljumps).
+long_option("pessimize-tailcalls",  pessimize_tailcalls).
+long_option("checked-nondet-tailcalls", checked_nondet_tailcalls).
+long_option("use-local-vars",       use_local_vars).
+long_option("local-var-access-threshold", local_var_access_threshold).
+long_option("standardise-labels",   standardize_labels).
+long_option("standardize-labels",   standardize_labels).
+long_option("optimize-labels",      optimize_labels).
+long_option("optimise-labels",      optimize_labels).
+long_option("optimize-dups",        optimize_dups).
+long_option("optimise-dups",        optimize_dups).
+long_option("optimize-proc-dups",   optimize_proc_dups).
+long_option("optimise-proc-dups",   optimize_proc_dups).
+%%% long_option("optimize-copyprop",    optimize_copyprop).
+%%% long_option("optimise-copyprop",    optimize_copyprop).
+long_option("optimize-frames",      optimize_frames).
+long_option("optimise-frames",      optimize_frames).
+long_option("optimize-delay-slot",  optimize_delay_slot).
+long_option("optimise-delay-slot",  optimize_delay_slot).
+long_option("optimize-reassign",    optimize_reassign).
+long_option("optimise-reassign",    optimize_reassign).
+long_option("optimize-repeat",      optimize_repeat).
+long_option("optimise-repeat",      optimize_repeat).
+long_option("layout-compression-limit",      layout_compression_limit).
+
+% LLDS->C optimizations
+long_option("use-macro-for-redo-fail",  use_macro_for_redo_fail).
+long_option("emit-c-loops",         emit_c_loops).
+long_option("procs-per-c-function", procs_per_c_function).
+long_option("procs-per-C-function", procs_per_c_function).
+long_option("everything-in-one-c-function", everything_in_one_c_function).
+long_option("everything-in-one-C-function", everything_in_one_c_function).
+long_option("inline-alloc",         inline_alloc).
+long_option("local-thread-engine-base", local_thread_engine_base).
+
+% Erlang
+long_option("erlang-switch-on-strings-as-atoms",
+                erlang_switch_on_strings_as_atoms).
+
+% Target code compilation options
+long_option("target-debug",         target_debug).
+
+long_option("cc",                   cc).
+long_option("c-optimise",           c_optimize).
+long_option("c-optimize",           c_optimize).
+% XXX we should consider the relationship between c_debug and target_debug
+% more carefully. Perhaps target_debug could imply C debug if the target is C.
+% However for the moment they are just synonyms.
+long_option("c-debug",              target_debug).
+long_option("c-include-directory",  c_include_directory).
+long_option("c-include-dir",        c_include_directory).
+long_option("ansi-c",               ansi_c).
+long_option("cflags",               cflags).
+long_option("cflag",                quoted_cflag).
+
+long_option("gcc-flags",            gcc_flags).
+long_option("gcc-flag",             quoted_gcc_flag).
+long_option("clang-flags",          clang_flags).
+long_option("clang-flag",           quoted_clang_flag).
+long_option("msvc-flags",           msvc_flags).
+long_option("msvc-flag",            quoted_msvc_flag).
+
+long_option("cflags-for-warnings",  cflags_for_warnings).
+long_option("cflags-for-optimization",  cflags_for_optimization).
+long_option("cflags-for-ansi",      cflags_for_ansi).
+long_option("cflags-for-regs",      cflags_for_regs).
+long_option("cflags-for-gotos",     cflags_for_gotos).
+long_option("cflags-for-threads",   cflags_for_threads).
+long_option("cflags-for-debug",     cflags_for_debug).
+long_option("cflags-for-pic",       cflags_for_pic).
+long_option("c-flag-to-name-object-file", c_flag_to_name_object_file).
+long_option("object-file-extension",    object_file_extension).
+long_option("pic-object-file-extension", pic_object_file_extension).
+long_option("link-with-pic-object-file-extension",
+                    link_with_pic_object_file_extension).
+long_option("c-compiler-type",      c_compiler_type).
+long_option("csharp-compiler-type", csharp_compiler_type).
+
+
+long_option("java-compiler",        java_compiler).
+long_option("javac",                java_compiler).
+long_option("java-interpreter",     java_interpreter).
+long_option("java-flags",           java_flags).
+long_option("java-flag",            quoted_java_flag).
+% XXX we should consider the relationship between java_debug and target_debug
+% more carefully. Perhaps target_debug could imply Java debug if the target
+% is Java. However for the moment they are just synonyms.
+long_option("java-debug",           target_debug).
+long_option("java-classpath",       java_classpath).
+long_option("java-object-file-extension", java_object_file_extension).
+
+long_option("il-assembler",         il_assembler).
+long_option("ilasm-flags",          ilasm_flags).
+long_option("ilasm-flag",           quoted_ilasm_flag).
+long_option("dotnet-library-version",   dotnet_library_version).
+long_option("support-ms-clr",       support_ms_clr).
+long_option("support-rotor-clr",    support_rotor_clr).
+
+long_option("csharp-compiler",      csharp_compiler).
+long_option("csharp-flags",         csharp_flags).
+long_option("csharp-flag",          quoted_csharp_flag).
+long_option("cli-interpreter",      cli_interpreter).
+
+long_option("erlang-compiler",      erlang_compiler).
+long_option("erlang-interpreter",   erlang_interpreter).
+long_option("erlang-flags",         erlang_flags).
+long_option("erlang-flag",          quoted_erlang_flag).
+long_option("erlang-include-directory", erlang_include_directory).
+long_option("erlang-include-dir",       erlang_include_directory).
+long_option("erlang-object-file-extension", erlang_object_file_extension).
+long_option("erlang-native-code",   erlang_native_code).
+long_option("erlang-inhibit-trivial-warnings",
+                                    erlang_inhibit_trivial_warnings).
+
+% link options
+long_option("output-file",          output_file_name).
+long_option("ld-flags",             ld_flags).
+long_option("ld-flag",              quoted_ld_flag).
+long_option("ld-libflags",          ld_libflags).
+long_option("ld-libflag",           quoted_ld_libflag).
+long_option("library-directory",    link_library_directories).
+long_option("runtime-library-directory", runtime_link_library_directories).
+long_option("library",              link_libraries).
+long_option("link-object",          link_objects).
+long_option("mercury-library",      mercury_library_special).
+long_option("ml",                   mercury_library_special).
+long_option("mercury-library-directory", mercury_library_directory_special).
+long_option("mld",                  mercury_library_directory_special).
+long_option("search-library-files-directory",
+                search_library_files_directory_special).
+long_option("search-lib-files-dir",
+                search_library_files_directory_special).
+long_option("mercury-standard-library-directory",
+                mercury_standard_library_directory_special).
+long_option("mercury-stdlib-dir",
+                mercury_standard_library_directory_special).
+long_option("init-file-directory",  init_file_directories).
+long_option("init-file",            init_files).
+long_option("trace-init-file",      trace_init_files).
+long_option("linkage",              linkage_special).
+long_option("mercury-linkage",      mercury_linkage_special).
+long_option("demangle",             demangle).
+long_option("strip",                strip).
+long_option("main",                 main).
+long_option("allow-undefined",      allow_undefined).
+long_option("use-readline",         use_readline).
+long_option("runtime-flags",        runtime_flags).
+long_option("extra-initialization-functions",
+                    extra_initialization_functions).
+long_option("extra-inits",      extra_initialization_functions).
+long_option("framework",        frameworks).
+long_option("framework-directory", framework_directories).
+
+long_option("shared-library-extension", shared_library_extension).
+long_option("library-extension",    library_extension).
+long_option("executable-file-extension", executable_file_extension).
+long_option("create-archive-command",   create_archive_command).
+long_option("create-archive-command-output-flag",
+                    create_archive_command_output_flag).
+long_option("create-archive-command-flags", create_archive_command_flags).
+long_option("link-executable-command",  link_executable_command).
+long_option("link-shared-lib-command",  link_shared_lib_command).
+long_option("ranlib-command",       ranlib_command).
+long_option("ranlib-flags",         ranlib_flags).
+long_option("mkinit-command",       mkinit_command).
+long_option("mkinit-erl-command",   mkinit_erl_command).
+long_option("demangle-command",     demangle_command).
+long_option("filtercc-command",     filtercc_command).
+long_option("trace-libs",           trace_libs).
+long_option("thread-libs",          thread_libs).
+long_option("hwloc-libs",           hwloc_libs).
+long_option("hwloc-static-libs",    hwloc_static_libs).
+long_option("shared-libs",          shared_libs).
+long_option("math-lib",             math_lib).
+long_option("readline-libs",        readline_libs).
+long_option("linker-opt-separator", linker_opt_separator).
+long_option("linker-debug-flags",   linker_debug_flags).
+long_option("shlib-linker-debug-flags", shlib_linker_debug_flags).
+long_option("linker-trace-flags",   linker_trace_flags).
+long_option("shlib-linker-trace-flags", shlib_linker_trace_flags).
+long_option("linker-thread-flags",  linker_thread_flags).
+long_option("shlib-linker-thread-flags", shlib_linker_thread_flags).
+long_option("linker-static-flags",  linker_static_flags).
+long_option("linker-strip-flag",    linker_strip_flag).
+long_option("linker-link-lib-flag", linker_link_lib_flag).
+long_option("linker-link-lib-suffix",   linker_link_lib_suffix).
+long_option("shlib-linker-link-lib-flag", shlib_linker_link_lib_flag).
+long_option("shlib-linker-link-lib-suffix", shlib_linker_link_lib_suffix).
+long_option("linker-path-flag",     linker_path_flag).
+long_option("linker-rpath-flag",    linker_rpath_flag).
+long_option("linker-rpath-separator",   linker_rpath_separator).
+long_option("shlib-linker-rpath-flag",  shlib_linker_rpath_flag).
+long_option("shlib-linker-rpath-separator", shlib_linker_rpath_separator).
+long_option("linker-allow-undefined-flag", linker_allow_undefined_flag).
+long_option("linker-error-undefined-flag", linker_error_undefined_flag).
+long_option("shlib-linker-use-install-name", shlib_linker_use_install_name).
+long_option("shlib-linker-install-name-flag", shlib_linker_install_name_flag).
+long_option("shlib-linker-install-name-path", shlib_linker_install_name_path).
+long_option("java-archive-command", java_archive_command).
+
+% build system options
+long_option("make",                 make).
+long_option("keep-going",           keep_going).
+long_option("rebuild",              rebuild).
+long_option("jobs",                 jobs).
+long_option("track-flags",          track_flags).
+long_option("track-options",        track_flags).
+long_option("invoked-by-mmc-make",  invoked_by_mmc_make).
+long_option("pre-link-command",     pre_link_command).
+long_option("extra-init-command",   extra_init_command).
+long_option("mercury-configuration-directory",
+                mercury_configuration_directory_special).
+long_option("mercury-config-dir",
+                mercury_configuration_directory_special).
+long_option("install-prefix",       install_prefix).
+long_option("install-command",      install_command).
+long_option("install-command-dir-option", install_command_dir_option).
+long_option("use-symlinks",         use_symlinks).
+long_option("library-grade",        libgrades).
+long_option("libgrade",             libgrades).
+long_option("libgrades-include-component", libgrades_include_components).
+long_option("libgrades-include",           libgrades_include_components).
+long_option("libgrades-exclude-component", libgrades_exclude_components).
+long_option("libgrades-exclude",           libgrades_exclude_components).
+long_option("library-linkage",      lib_linkages).
+long_option("lib-linkage",          lib_linkages).
+long_option("flags",                flags_file).
+long_option("flags-file",           flags_file).
+long_option("options-file",         options_files).
+long_option("config-file",          config_file).
+long_option("options-search-directory", options_search_directories).
+long_option("use-subdirs",          use_subdirs).
+long_option("use-grade-subdirs",    use_grade_subdirs).
+long_option("search-directory",     search_directories).
+long_option("intermod-directory",   intermod_directories).
+long_option("use-search-directories-for-intermod",
+                    use_search_directories_for_intermod).
+long_option("libgrade-install-check", libgrade_install_check).
+long_option("order-make-by-timestamp", order_make_by_timestamp).
+long_option("show-make-times",      show_make_times).
+long_option("extra-lib-header",     extra_library_header).
+long_option("extra-library-header", extra_library_header).
+long_option("restricted-command-line", restricted_command_line).
+long_option("env-type",                env_type).
+long_option("host-env-type",           host_env_type).
+long_option("target-env-type",         target_env_type).
+
+% misc options
+long_option("typecheck-ambiguity-warn-limit",
+                                    typecheck_ambiguity_warn_limit).
+long_option("typecheck-ambiguity-error-limit",
+                                    typecheck_ambiguity_error_limit).
+long_option("help",                 help).
+long_option("version",              version).
+long_option("filenames-from-stdin", filenames_from_stdin).
+long_option("fullarch",             fullarch).
+long_option("cross-compiling",      cross_compiling).
+long_option("local-module-id",      local_module_id).
+long_option("analysis-file-cache-dir",  analysis_file_cache_dir).
+long_option("bug-intermod-2002-06-13",  compiler_sufficiently_recent).
+long_option("bug-intermod-2006-09-28",  compiler_sufficiently_recent).
+long_option("bug-foreign_import-2002-08-06", compiler_sufficiently_recent).
+long_option("install-opt-files-2002-08-30", compiler_sufficiently_recent).
+long_option("read-config-file-2003-03-01", compiler_sufficiently_recent).
+% XXX this option won't be recognised because of the "no-" prefix,
+% but "no-no-" will be recognised.
+long_option("no-noncompact-ho-call-2004-01-15", compiler_sufficiently_recent).
+long_option("trace-io-builtins-2006-08-14", compiler_sufficiently_recent).
+long_option("compound-compare-builtins-2007-07-09",
+                                    compiler_sufficiently_recent).
+% XXX this option won't be recognised because of the "no-" prefix,
+% but "no-no-" will be recognised.
+long_option("no-det-warning-compound-compare-2007-07-17",
+                                    compiler_sufficiently_recent).
+long_option("foreign-enum-switch-fix",
+                                    compiler_sufficiently_recent).
+long_option("failing-disjunct-in-switch-dup-fix",
+                                    compiler_sufficiently_recent).
+long_option("store-at-ref-impure-2008-09-11",
+                                    compiler_sufficiently_recent).
+long_option("java-export-ref-out",  compiler_sufficiently_recent).
+long_option("java-generics-2010-04-13",
+                                    compiler_sufficiently_recent).
+long_option("experiment",           experiment).
+long_option("ignore-par-conjunctions",
+                                    ignore_par_conjunctions).
+long_option("control-granularity",  control_granularity).
+long_option("distance-granularity", distance_granularity).
+long_option("implicit-parallelism", implicit_parallelism).
+long_option("feedback-file",        feedback_file).
+long_option("par-loop-control",     par_loop_control).
+long_option("par-loop-control-preserve-tail-recursion",
+                                    par_loop_control_preserve_tail_recursion).
+
+%-----------------------------------------------------------------------------%
+
+special_handler(grade, string(Grade), OptionTable0, Result) :-
+    ( convert_grade_option(Grade, OptionTable0, OptionTable) ->
+        Result = ok(OptionTable)
+    ;
+        Result = error("invalid grade `" ++ Grade ++ "'")
+    ).
+special_handler(il, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("il"), !OptionTable).
+special_handler(il_only, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("il"), !OptionTable),
+    map.set(target_code_only, bool(yes), !OptionTable).
+special_handler(compile_to_c, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("c"), !OptionTable),
+    map.set(target_code_only, bool(yes), !OptionTable).
+special_handler(java, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("java"), !OptionTable).
+special_handler(java_only, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("java"), !OptionTable),
+    map.set(target_code_only, bool(yes), !OptionTable).
+special_handler(csharp, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("csharp"), !OptionTable).
+special_handler(csharp_only, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("csharp"), !OptionTable),
+    map.set(target_code_only, bool(yes), !OptionTable).
+special_handler(x86_64, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("x86_64"), !OptionTable).
+special_handler(x86_64_only, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("x86_64"), !OptionTable),
+    map.set(target_code_only, bool(yes), !OptionTable).
+special_handler(erlang, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("erlang"), !OptionTable).
+special_handler(erlang_only, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(target, string("erlang"), !OptionTable),
+    map.set(target_code_only, bool(yes), !OptionTable).
+special_handler(profiling, bool(Value), !.OptionTable, ok(!:OptionTable)) :-
+    map.set(profile_time, bool(Value), !OptionTable),
+    map.set(profile_calls, bool(Value), !OptionTable),
+    map.set(profile_memory, bool(no), !OptionTable),
+    map.set(profile_deep, bool(no), !OptionTable).
+special_handler(time_profiling, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(profile_time, bool(yes), !OptionTable),
+    map.set(profile_calls, bool(yes), !OptionTable),
+    map.set(profile_memory, bool(no), !OptionTable),
+    map.set(profile_deep, bool(no), !OptionTable).
+special_handler(memory_profiling, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(profile_time, bool(no), !OptionTable),
+    map.set(profile_calls, bool(yes), !OptionTable),
+    map.set(profile_memory, bool(yes), !OptionTable),
+    map.set(profile_deep, bool(no), !OptionTable).
+special_handler(deep_profiling, none, !.OptionTable, ok(!:OptionTable)) :-
+    map.set(profile_time, bool(no), !OptionTable),
+    map.set(profile_calls, bool(no), !OptionTable),
+    map.set(profile_memory, bool(no), !OptionTable),
+    map.set(profile_deep, bool(yes), !OptionTable).
+special_handler(inlining, bool(Value), !.OptionTable, ok(!:OptionTable)) :-
+    map.set(inline_simple, bool(Value), !OptionTable),
+    map.set(inline_builtins, bool(Value), !OptionTable),
+    map.set(inline_single_use, bool(Value), !OptionTable),
+    (
+        Value = yes,
+        map.set(inline_compound_threshold, int(10), !OptionTable)
+    ;
+        Value = no,
+        map.set(inline_compound_threshold, int(0), !OptionTable)
+    ).
+special_handler(everything_in_one_c_function, none, !.OptionTable,
+        ok(!:OptionTable)) :-
+    map.set(procs_per_c_function, int(0), !OptionTable).
+special_handler(reclaim_heap_on_failure, bool(Value), !.OptionTable,
+            ok(!:OptionTable)) :-
+    map.set(reclaim_heap_on_semidet_failure, bool(Value), !OptionTable),
+    map.set(reclaim_heap_on_nondet_failure, bool(Value), !OptionTable).
+special_handler(strict_sequential, none, !.OptionTable, ok(!:OptionTable)) :-
+    override_options([
+            reorder_conj - bool(no),
+            reorder_disj - bool(no),
+            fully_strict - bool(yes)
+        ], !OptionTable).
+special_handler(inhibit_warnings, bool(Inhibit), !.OptionTable,
+        ok(!:OptionTable)) :-
+    bool.not(Inhibit, Enable),
+    override_options([
+            inhibit_accumulator_warnings    -   bool(Inhibit),
+            warn_singleton_vars             -   bool(Enable),
+            warn_overlapping_scopes         -   bool(Enable),
+            warn_det_decls_too_lax          -   bool(Enable),
+            warn_inferred_erroneous         -   bool(Enable),
+            warn_nothing_exported           -   bool(Enable),
+            warn_interface_imports          -   bool(Enable),
+            warn_missing_opt_files          -   bool(Enable),
+            warn_missing_trans_opt_files    -   bool(Enable),
+            warn_missing_trans_opt_deps     -   bool(Enable),
+            warn_unification_cannot_succeed -   bool(Enable),
+            warn_simple_code                -   bool(Enable),
+            warn_missing_module_name        -   bool(Enable),
+            warn_wrong_module_name          -   bool(Enable),
+            warn_smart_recompilation        -   bool(Enable),
+            warn_undefined_options_variables -  bool(Enable),
+            warn_target_code                -   bool(Enable),
+            warn_up_to_date                 -   bool(Enable),
+            warn_stubs                      -   bool(Enable),
+            warn_dead_procs                 -   bool(Enable),
+            warn_table_with_inline          -   bool(Enable),
+            warn_non_term_special_preds     -   bool(Enable),
+            warn_insts_without_matching_type -  bool(Enable)
+        ], !OptionTable).
+special_handler(infer_all, bool(Infer), !.OptionTable, ok(!:OptionTable)) :-
+    override_options([
+            infer_types                     -   bool(Infer),
+            infer_modes                     -   bool(Infer),
+            infer_det                       -   bool(Infer)
+        ], !OptionTable).
+special_handler(opt_space, none, !.OptionTable, ok(!:OptionTable)) :-
+    opt_space(OptionSettingsList),
+    override_options(OptionSettingsList, !OptionTable).
+special_handler(opt_level, int(N0), !.OptionTable, ok(!:OptionTable)) :-
+    ( N0 > 6 ->
+        N = 6
+    ; N0 < -1 ->
+        N = -1
+    ;
+        N = N0
+    ),
+    map.set(opt_level_number, int(N), !OptionTable),
+    set_opt_level(N, !OptionTable).
+special_handler(optimize_saved_vars, bool(Optimize),
+        !.OptionTable, ok(!:OptionTable)) :-
+    map.set(optimize_saved_vars_const, bool(Optimize), !OptionTable),
+    map.set(optimize_saved_vars_cell, bool(Optimize), !OptionTable).
+special_handler(mercury_library_directory_special, string(Dir),
+        !.OptionTable, ok(!:OptionTable)) :-
+    !:OptionTable = option_table_add_mercury_library_directory(
+        !.OptionTable, Dir).
+special_handler(search_library_files_directory_special, string(Dir),
+        OptionTable0, ok(OptionTable)) :-
+    OptionTable = option_table_add_search_library_files_directory(
+        OptionTable0, Dir).
+special_handler(mercury_library_special, string(Lib),
+        OptionTable0, ok(OptionTable)) :-
+    OptionTable =
+        list.foldl(append_to_accumulating_option, [
+            link_libraries                  - Lib,
+            mercury_libraries               - Lib,
+            init_files                      - (Lib ++ ".init")
+        ], OptionTable0).
+special_handler(mercury_standard_library_directory_special,
+        maybe_string(MaybeStdLibDir), OptionTable0, ok(OptionTable)) :-
+    OptionTable =
+        map.set(map.set(OptionTable0,
+        mercury_standard_library_directory, maybe_string(MaybeStdLibDir)),
+        mercury_configuration_directory, maybe_string(MaybeStdLibDir)).
+special_handler(mercury_configuration_directory_special,
+        string(ConfDir), OptionTable0, ok(OptionTable)) :-
+    OptionTable = map.set(OptionTable0, mercury_configuration_directory,
+        maybe_string(yes(ConfDir))).
+special_handler(quoted_cflag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(cflags, Flag, OptionTable0, OptionTable).
+special_handler(quoted_gcc_flag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(gcc_flags, Flag, OptionTable0, OptionTable).
+special_handler(quoted_clang_flag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(clang_flags, Flag, OptionTable0, OptionTable).
+special_handler(quoted_msvc_flag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(msvc_flags, Flag, OptionTable0, OptionTable).
+special_handler(quoted_java_flag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(java_flags, Flag, OptionTable0, OptionTable).
+special_handler(quoted_ilasm_flag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(ilasm_flags, Flag, OptionTable0, OptionTable).
+special_handler(quoted_csharp_flag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(csharp_flags, Flag, OptionTable0, OptionTable).
+special_handler(quoted_erlang_flag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(erlang_flags, Flag, OptionTable0, OptionTable).
+special_handler(quoted_ld_flag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(ld_flags, Flag, OptionTable0, OptionTable).
+special_handler(quoted_ld_libflag, string(Flag),
+        OptionTable0, ok(OptionTable)) :-
+    handle_quoted_flag(ld_libflags, Flag, OptionTable0, OptionTable).
+special_handler(linkage_special, string(Flag), OptionTable0, Result) :-
+    ( ( Flag = "shared" ; Flag = "static" ) ->
+        Result = ok(
+            (OptionTable0 ^ elem(mercury_linkage) := string(Flag))
+                ^ elem(linkage) := string(Flag))
+    ;
+        Result = error("argument of `--linkage' should be either " ++
+            """shared"" or ""static"".")
+    ).
+special_handler(mercury_linkage_special, string(Flag),
+            OptionTable0, Result) :-
+    ( ( Flag = "shared" ; Flag = "static" ) ->
+        Result = ok(OptionTable0 ^ elem(mercury_linkage) := string(Flag))
+    ;
+        Result = error("argument of `--mercury-linkage' should be either " ++
+            """shared"" or ""static"".")
+    ).
+
+special_handler(env_type, string(EnvTypeStr), OptionTable0, ok(OptionTable)) :-
+    OptionTable =
+        map.set(map.set(OptionTable0,
+        host_env_type, string(EnvTypeStr)),
+        target_env_type, string(EnvTypeStr)).
+
+special_handler(inform_inferred, bool(Inform), !.OptionTable,
+        ok(!:OptionTable)) :-
+    override_options([
+            inform_inferred_types -   bool(Inform),
+            inform_inferred_modes -   bool(Inform)
+        ], !OptionTable).
+
+%-----------------------------------------------------------------------------%
+
+option_table_add_mercury_library_directory(OptionTable0, Dir) =
+    % The init_file_directories and link_library_directories for Mercury
+    % libraries are grade dependent, so they need to be handled in
+    % handle_options.m after we know the grade.
+    list.foldl(append_to_accumulating_option, [
+        search_directories          - dir.make_path_name(Dir, "ints"),
+        c_include_directory         - dir.make_path_name(Dir, "inc"),
+        erlang_include_directory    - dir.make_path_name(Dir, "inc"),
+        mercury_library_directories - Dir
+    ], OptionTable0).
+
+option_table_add_search_library_files_directory(OptionTable0, Dir) =
+    % Grade dependent directories need to be handled in handle_options.m
+    % after we know the grade.
+    list.foldl(append_to_accumulating_option, [
+        search_directories          - Dir,
+        c_include_directory         - Dir,
+        erlang_include_directory    - Dir,
+        search_library_files_directories - Dir
+    ], OptionTable0).
+
+:- func append_to_accumulating_option(pair(option, string),
+        option_table) = option_table.
+
+append_to_accumulating_option(Option - Value, OptionTable0) =
+    OptionTable0 ^ elem(Option) :=
+        accumulating(
+            getopt_io.lookup_accumulating_option(OptionTable0, Option)
+        ++ [Value]).
+
+:- pred set_opt_level(int::in, option_table::in, option_table::out) is det.
+
+set_opt_level(N, !OptionTable) :-
+    % First reset all optimizations to their default
+    % (the default should be all optimizations off).
+    option_defaults_2(optimization_option, OptimizationDefaults),
+    override_options(OptimizationDefaults, !OptionTable),
+
+    % Next enable the optimization levels from 0 up to N.
+    enable_opt_levels(0, N, !OptionTable).
+
+:- pred enable_opt_levels(int::in, int::in,
+    option_table::in, option_table::out) is det.
+
+enable_opt_levels(N0, N, !OptionTable) :-
+    ( N0 > N ->
+        true
+    ; opt_level(N0, !.OptionTable, OptionSettingsList) ->
+        override_options(OptionSettingsList, !OptionTable),
+        N1 = N0 + 1,
+        enable_opt_levels(N1, N, !OptionTable)
+    ;
+        unexpected($module, $pred, "unknown optimization level")
+    ).
+
+:- pred override_options(list(pair(option, option_data))::in,
+    option_table::in, option_table::out) is det.
+
+override_options([], !OptionTable).
+override_options([Option - Value | Settings], !OptionTable) :-
+    map.set(Option, Value, !OptionTable),
+    override_options(Settings, !OptionTable).
+
+%-----------------------------------------------------------------------------%
+
+:- pred opt_space(list(pair(option, option_data))::out) is det.
+
+opt_space([
+    unneeded_code_copy_limit    -   int(1),
+    optimize_dead_procs         -   bool(yes),
+    optimize_labels             -   bool(yes),
+    optimize_dups               -   bool(yes),
+    optimize_proc_dups          -   bool(yes),
+    optimize_fulljumps          -   bool(no),
+    optimize_reassign           -   bool(yes),
+    inline_alloc                -   bool(no),
+    use_macro_for_redo_fail     -   bool(no),
+    loop_invariants             -   bool(no)
+]).
+
+%-----------------------------------------------------------------------------%
+
+:- pred opt_level(int::in, option_table::in,
+    list(pair(option, option_data))::out) is semidet.
+
+% Optimization level -1:
+% Generate totally unoptimized code; turns off ALL optimizations that
+% can be turned off, including HLDS->HLDS, HLDS->LLDS, LLDS->LLDS, LLDS->C,
+% and C->object optimizations.
+% (However, there are some optimizations that can't be disabled.)
+
+% Optimization level 0: aim to minimize overall compilation time.
+% XXX I just guessed.  We should run lots of experiments.
+
+opt_level(0, _, [
+    common_data                 -   bool(yes),
+    optimize                    -   bool(yes),
+    optimize_repeat             -   int(1),
+    optimize_peep               -   bool(yes),
+    optimize_peep_mkword        -   bool(yes),
+    static_ground_cells         -   bool(yes),
+    smart_indexing              -   bool(yes),
+    optimize_jumps              -   bool(yes),
+    optimize_labels             -   bool(yes),
+    optimize_dead_procs         -   bool(yes),
+    excess_assign               -   bool(yes)   % ???
+]).
+
+% Optimization level 1: apply optimizations which are cheap and
+% have a good payoff while still keeping compilation time small.
+
+opt_level(1, OptionTable, [
+    use_local_vars              -   bool(yes),
+    c_optimize                  -   bool(yes),  % XXX we want `gcc -O1'
+    optimize_frames             -   bool(yes),
+    optimize_delay_slot         -   bool(DelaySlot),
+    middle_rec                  -   bool(yes),
+    emit_c_loops                -   bool(yes),
+    optimize_tailcalls          -   bool(yes)
+    % dups?
+]) :-
+    getopt_io.lookup_bool_option(OptionTable, have_delay_slot, DelaySlot).
+
+% Optimization level 2: apply optimizations which have a good
+% payoff relative to their cost; but include optimizations
+% which are more costly than with -O1.
+
+opt_level(2, _, [
+    optimize_fulljumps          -   bool(yes),
+    optimize_repeat             -   int(3),
+    optimize_dups               -   bool(yes),
+    follow_code                 -   bool(yes),
+    inline_simple               -   bool(yes),
+    inline_single_use           -   bool(yes),
+    inline_compound_threshold   -   int(10),
+    common_struct               -   bool(yes),
+    user_guided_type_specialization -   bool(yes),
+    % XXX While inst `array' is defined as `ground', we can't optimize
+    % duplicate calls (we might combine calls to `array.init').
+    % optimize_duplicate_calls  -   bool(yes),
+    simple_neg                  -   bool(yes),
+
+    optimize_initializations    -  bool(yes)
+]).
+
+% Optimization level 3: apply optimizations which usually have a good
+% payoff even if they increase compilation time quite a bit.
+
+opt_level(3, _, [
+    optimize_saved_vars_const   - bool(yes),
+    optimize_unused_args        -   bool(yes),
+    optimize_higher_order       -   bool(yes),
+    deforestation               -   bool(yes),
+    local_constraint_propagation -  bool(yes),
+    constant_propagation        -   bool(yes),
+    optimize_reassign           -   bool(yes),
+    % Disabled until a bug in extras/trailed_update/var.m is resolved.
+    % introduce_accumulators    -   bool(yes),
+    optimize_repeat             -   int(4)
+]).
+
+% Optimization level 4: apply optimizations which may have some
+% payoff even if they increase compilation time quite a bit.
+
+% Currently this enables the use of local variables
+% and increases the inlining thresholds.
+
+opt_level(4, _, [
+    inline_simple_threshold     -   int(8),
+    inline_compound_threshold   -   int(20),
+    higher_order_size_limit     -   int(30)
+]).
+
+% Optimization level 5: apply optimizations which may have some
+% payoff even if they increase compilation time a lot.
+
+% Currently this enables the search for construction unifications that can be
+% delayed past failing computations, allows more passes of the low-level
+% optimizations, and increases the inlining thresholds still further.
+% We also enable eliminate_local_vars only at this level,
+% because that pass is implemented pretty inefficiently.
+
+opt_level(5, _, [
+    optimize_repeat             -   int(5),
+    delay_construct             -   bool(yes),
+    inline_compound_threshold   -   int(100),
+    higher_order_size_limit     -   int(40),
+    eliminate_local_vars        -   bool(yes),
+    loop_invariants             -   bool(yes)
+]).
+
+% Optimization level 6: apply optimizations which may have any payoff even if
+% they increase compilation time to completely unreasonable levels.
+
+% Currently this sets `everything_in_one_c_function', which causes the compiler
+% to put everything in the one C function and treat calls to predicates in the
+% same module as local. We also enable inlining of GC_malloc(), redo(), and
+% fail().
+
+opt_level(6, _, [
+    procs_per_c_function        -   int(0), % everything in one C function
+    inline_alloc                -   bool(yes),
+    use_macro_for_redo_fail     -   bool(yes)
+]).
+
+% The following optimization options are not enabled at any level:
+%
+%   checked_nondet_tailcalls:
+%       This is deliberate, because the transformation
+%       might make code run slower.
+%
+%   constraint_propagation:
+%       I think this is deliberate, because the transformation
+%       might make code run slower?
+%
+%   unneeded_code:
+%       Because it can cause slowdowns at high optimization levels;
+%       cause unknown
+%   type_specialization:
+%       XXX why not?
+%
+%   introduce_accumulators:
+%       XXX Disabled until a bug in extras/trailed_update/var.m
+%       is resolved.
+%
+%   optimize_constructor_last_call:
+%       Not a speedup in general.
+
+%-----------------------------------------------------------------------------%
+
+:- pred handle_quoted_flag(option::in, string::in,
+    option_table::in, option_table::out) is det.
+
+handle_quoted_flag(Option, Flag, Table,
+    append_to_accumulating_option(Option - quote_arg(Flag), Table)).
+
+quote_arg(Arg0) = Arg :-
+    % XXX Instead of using dir.use_windows_paths, this should really
+    % test whether we are using a Unix or Windows shell.
+    ( dir.use_windows_paths ->
+        ( ( string_contains_whitespace(Arg0) ; Arg0 = "" ) ->
+            Arg = """" ++ Arg0 ++ """"
+        ;
+            Arg = Arg0
+        )
+    ;
+        ArgList = quote_arg_unix(string.to_char_list(Arg0)),
+        (
+            ArgList = [],
+            Arg = """"""
+        ;
+            ArgList = [_ | _],
+            (
+                list.member(Char, ArgList),
+                \+
+                    ( char.is_alnum_or_underscore(Char)
+                    ; Char = ('-')
+                    ; Char = ('/')
+                    ; Char = ('.')
+                    ; Char = (',')
+                    ; Char = (':')
+                    )
+            ->
+                Arg = """" ++ string.from_char_list(ArgList) ++ """"
+            ;
+                Arg = string.from_char_list(ArgList)
+            )
+        )
+    ).
+
+:- pred string_contains_whitespace(string::in) is semidet.
+
+string_contains_whitespace(Str) :-
+    Chars = string.to_char_list(Str),
+    some [Char] (
+        list.member(Char, Chars),
+        char.is_whitespace(Char)
+    ).
+
+:- func quote_arg_unix(list(char)) = list(char).
+
+quote_arg_unix([]) = [].
+quote_arg_unix([Char | Chars0]) = Chars :-
+    Chars1 = quote_arg_unix(Chars0),
+    ( quote_char_unix(Char) ->
+        Chars = [('\\'), Char | Chars1]
+    ;
+        Chars = [Char | Chars1]
+    ).
+
+:- pred quote_char_unix(char::in) is semidet.
+
+quote_char_unix('\\').
+quote_char_unix('"').
+quote_char_unix('`').
+quote_char_unix('$').
+
+%-----------------------------------------------------------------------------%
+
+inconsequential_options(InconsequentialOptions) :-
+    option_defaults_2(warning_option, WarningOptions),
+    option_defaults_2(verbosity_option, VerbosityOptions),
+    option_defaults_2(internal_use_option, InternalUseOptions),
+    option_defaults_2(build_system_option, BuildSystemOptions),
+    assoc_list.keys(WarningOptions, WarningKeys),
+    assoc_list.keys(VerbosityOptions, VerbosityKeys),
+    assoc_list.keys(InternalUseOptions, InternalUseKeys),
+    assoc_list.keys(BuildSystemOptions, BuildSystemKeys),
+    Keys = WarningKeys ++ VerbosityKeys ++ InternalUseKeys ++ BuildSystemKeys,
+    InconsequentialOptions = set.from_list(Keys).
+
+%-----------------------------------------------------------------------------%
+
+options_help -->
+    io.write_string("\t-?, -h, --help\n"),
+    io.write_string("\t\tPrint this usage message.\n"),
+    options_help_warning,
+    options_help_verbosity,
+    options_help_output,
+    options_help_aux_output,
+    options_help_semantics,
+    options_help_termination,
+    options_help_ctgc,
+    options_help_compilation_model,
+    options_help_code_generation,
+    options_help_optimization,
+    options_help_hlds_hlds_optimization,
+    options_help_hlds_llds_optimization,
+    options_help_llds_llds_optimization,
+    options_help_mlds_mlds_optimization,
+    options_help_hlds_elds_optimization,
+    options_help_output_optimization,
+    options_help_target_code_compilation,
+    options_help_link,
+    options_help_build_system,
+    options_help_misc.
+
+:- pred options_help_warning(io::di, io::uo) is det.
+
+options_help_warning -->
+    io.write_string("\nWarning Options:\n"),
+    write_tabbed_lines([
+        "-w, --inhibit-warnings",
+        "\tDisable all warning messages.",
+        "--halt-at-warn",
+        "\tThis option causes the compiler to treat all ",
+        "\twarnings as if they were errors.  This means that",
+        "\tif any warning is issued, the compiler will not",
+        "\tgenerate code --- instead, it will return a",
+        "\tnon-zero exit status.",
+        "--halt-at-syntax-errors",
+        "\tThis option causes the compiler to halt immediately",
+        "\tafter syntax checking and not do any semantic checking",
+        "\tif it finds any syntax errors in the program.",
+%       "--halt-at-auto-parallel-failure",
+%       "\tThis option causes the compiler to halt if it cannot perform",
+%       "\tan auto-parallelization requested by a feedback file.",
+        "--inhibit-accumulator-warnings",
+        "\tDon't warn about argument order rearrangement caused",
+        "\tby --introduce-accumulators.",
+        "--no-warn-singleton-variables",
+        "\tDon't warn about variables which only occur once.",
+        "--no-warn-overlapping-scopes",
+        "\tDon't warn about variables which occur in overlapping scopes.",
+        "--no-warn-det-decls-too-lax",
+        "\tDon't warn about determinism declarations",
+        "\twhich could have been stricter.",
+        "--no-warn-inferred-erroneous",
+        "\tDon't warn about procedures whose determinism is inferred",
+        "\terroneous but whose determinism declarations are laxer.",
+        "--no-warn-insts-without-matching-type",
+        "\tDon't warn about insts that are not consistent with any",
+        "\tof the types in scope.",
+        % XXX disabled until compiler unused_imports,
+        % don't forget to update the user_guide.texi
+        % "--no-warn-unused-imports",
+        % "\tDon't warn about modules that are imported but not used.",
+        "--warn-unused-imports",
+        "\tWarn about modules that are imported but not used.",
+        "--no-warn-nothing-exported",
+        "\tDon't warn about modules which export nothing.",
+        "--warn-unused-args",
+        "\tWarn about predicate arguments which are not used.",
+        "--warn-interface-imports",
+        "\tWarn about modules imported in the interface, but",
+        "\twhich are not used in the interface.",
+        "--no-warn-missing-opt-files",
+        "\tDisable warnings about `.opt' files which cannot be opened.",
+        "--warn-missing-trans-opt-files",
+        "\tEnable warnings about `.trans_opt' files which cannot",
+        "\tbe opened.",
+        "--no-warn-missing-trans-opt-deps",
+        "\tDisable warnings produced when the information required",
+        "\tto allow `.trans_opt' files to be read when creating other",
+        "\t`.trans_opt' files has been lost.  The information can be",
+        "\trecreated by running `mmake <mainmodule>.depend'",
+        "--no-warn-non-contiguous-clauses",
+        "\tDo not generate a warning if the clauses of a predicate or function",
+        "\tare not contiguous.",
+        "--warn-non-contiguous-foreign-procs",
+        "\tGenerate a warning if the clauses and foreign_procs of a predicate",
+        "\tor function are not contiguous.",
+        "--warn-non-stratification",
+        "\tWarn about possible non-stratification of the predicates and/or",
+        "\tfunctions in the module.",
+        "\tNon-stratification occurs when a predicate or function can call",
+        "\titself negatively through some path along its call graph.",
+        "--no-warn-unification-cannot-succeed",
+        "\tDisable warnings about unifications which cannot succeed.",
+        "--no-warn-simple-code",
+        "\tDisable warnings about constructs which are so",
+        "\tsimple that they are likely to be programming errors.",
+        "--warn-duplicate-calls",
+        "\tWarn about multiple calls to a predicate with the",
+        "\tsame input arguments.",
+        "--no-warn-missing-module-name",
+        "\tDisable warnings for modules that do no start with",
+        "\ta `:- module' declaration.",
+        "--no-warn-wrong-module-name",
+        "\tDisable warnings for modules whose `:- module'",
+        "\tdeclaration does not match the module's file name.",
+        "--no-warn-smart-recompilation",
+        "\tDisable warnings from the smart recompilation system.",
+        "--no-warn-undefined-options-variables",
+        "\tDo not warn about references to undefined variables in",
+        "\toptions files with `--make'.",
+        "--warn-non-tail-recursion",
+        "\tWarn about any directly recursive calls that are not tail calls.",
+        "--no-warn-up-to-date",
+        "\tDon't warn if targets specified on the command line",
+        "\twith `--make' are already up to date.",
+        "--no-warn-stubs",
+        "\tDisable warnings about procedures for which there are no",
+        "\tclauses.  Note that this option only has any effect if",
+        "\tthe `--allow-stubs' option (described in the ""Language",
+        "\tSemantics Options"" section below) is enabled.",
+        "--warn-dead-procs",
+        "\tWarn about procedures which are never called.",
+        "--no-warn-target-code",
+        "\tDisable warnings from the compiler used to process the",
+        "\ttarget code (e.g. gcc).",
+        "--no-warn-table-with-inline",
+        "\tDisable warnings about tabled procedures that also have",
+        "\ta `pragma inline' declaration.",
+        "--no-warn-non-term-special-preds",
+        "\tDo not warn about types that have user-defined equality or",
+        "\tcomparison predicates that cannot be proved to terminate.",
+        "\tThis option is only enabled when termination analysis is enabled.",
+        "\t(See the ""Termination Analysis Options"" section below).",
+        "--no-warn-known-bad-format-calls",
+        "\tDo not warn about calls to string.format or io.format that",
+        "\tthe compiler knows for sure contain mismatches between the",
+        "\tformat string and the supplied values.",
+        "--warn-unknown-format-calls",
+        "\tWarn about calls to string.format or io.format for which",
+        "\tthe compiler cannot tell whether there are any mismatches",
+        "\tbetween the format string and the supplied values.",
+        "--no-warn-obsolete",
+        "\tDo not warn about calls to predicates or functions that have",
+        "\tbeen marked as obsolete.",
+        "--inform-ite-instead-of-switch",
+        "\tGenerate informational messages for if-then-elses that could be",
+        "\treplaced by switches.",
+        "--no-warn-unresolved-polymorphism",
+        "\tDo not warn about unresolved polymorphism.",
+        "--warn-suspicious-foreign-procs",
+        "\tWarn about possible errors in the bodies of foreign",
+        "\tprocedures.",
+        "--no-warn-state-var-shadowing",
+        "\tDo not warn about one state variable shadowing another.",
+        "--no-inform-inferred",
+        "\tDo not generate messages about inferred types or modes.",
+        "--no-inform-inferred-types",
+        "\tDo not generate messages about inferred types.",
+        "--no-inform-inferred-modes",
+        "\tDo not generate messages about inferred modes."
+    ]).
+
+:- pred options_help_verbosity(io::di, io::uo) is det.
+
+options_help_verbosity -->
+    io.write_string("\nVerbosity Options:\n"),
+    write_tabbed_lines([
+        "-v, --verbose",
+        "\tOutput progress messages at each stage in the compilation.",
+        "-V, --very-verbose",
+        "\tOutput very verbose progress messages.",
+        "-E, --verbose-error-messages",
+        "\tExplain error messages.  Asks the compiler to give you a more",
+        "\tdetailed explanation of any errors it finds in your program.",
+        "--no-verbose-make",
+        "\tDisable messages about the progress of builds using",
+        "\tthe `--make' option.",
+        "--verbose-commands",
+        "\tOutput each external command before it is run.",
+        "\tNote that some commands will only be printed with `--verbose'.",
+        "--verbose-recompilation",
+        "\tWhen using `--smart-recompilation', output messages",
+        "\texplaining why a module needs to be recompiled.",
+        "--find-all-recompilation-reasons",
+        "\tFind all the reasons why a module needs to be recompiled,",
+        "\tnot just the first.  Implies `--verbose-recompilation'.",
+        "--output-compile-error-lines <n>",
+        "\tWith `--make', output the first <n> lines of the `.err'",
+        "\tfile after compiling a module (default: 15).",
+        "--report-cmd-line-args-doterr",
+        "\tReport the command line arguments.",
+        "--report-cmd-line-args-in-doterr",
+        "\tReport the command line arguments for compilations whose output",
+        "\tmmake normally redirects to a .err file.",
+        "-S, --statistics",
+        "\tOutput messages about the compiler's time/space usage.",
+        "\tAt the moment this option implies `--no-trad-passes', so you get",
+        "\tinformation at the boundaries between phases of the compiler.",
+% The only sensible way to use --detailed-statistics, based on --very-verbose,
+% is implemented automatically in handle_options, so users shouldn't need to be
+% aware of it.
+%       "--detailed-statistics",
+%       "\tOutput more detailed messages about the compiler's",
+%       "\ttime/space usage.",
+        "--proc-size-statistics <filename>",
+        "\tAppend information about the size of each procedure in the module",
+        "\tin terms of goals and variables to the end of the named file.",
+% --debug-types works only if the compiler was compiled with
+% "--trace-flag type_checkpoint".
+%       "-T, --debug-types",
+%       "\tOutput detailed debugging traces of the type checking.",
+        "-N, --debug-modes",
+        "\tOutput debugging traces of the mode checking.",
+        "--debug-modes-statistics",
+        "\tOutput statistics after each step of mode checking.",
+        "--debug-modes-minimal",
+        "\tOutput only minimal debugging traces of the mode checking.",
+        "--debug-modes-verbose",
+        "\tOutput detailed debugging traces of the mode checking.",
+        "--debug-modes-pred-id <n>",
+        "\tWith --debug-modes, restrict the debugging traces to the",
+        "\tmode checking of the predicate or function with the specified",
+        "\tpred id.",
+% --debug-dep-par-conj <n> is a developer only option,
+% and it is effective only if the compiler was compiled with the right
+% trace flags.
+%       "--debug-dep-par-conj <n>",
+%       "\tOutput detailed debugging traces during the dependent",
+%       "\tAND-parallelism transformation of the predicate with the",
+%       "\tpredicate id.",
+        "--debug-det, --debug-determinism",
+        "\tOutput detailed debugging traces of determinism analysis.",
+% --debug-code-gen-pred-id <n> is a developer only option,
+% and it is effective only if the compiler was compiled with the right
+% trace flags.
+%       "--debug-code-gen-pred-id <n>",
+%       "\tOutput detailed debugging traces of code generation for the",
+%       "\tpredicate or function with the given pred id.",
+% The new termination analyser is currently a work-in-progress.
+%
+        %"--debug-term, --debug-termination",
+        %"\tOutput detailed debugging traces of the termination2 analysis.",
+        "--debug-opt",
+        "\tOutput detailed debugging traces of the optimization process.",
+        "--debug-opt-pred-id <n>",
+        "\tOutput detailed debugging traces of the optimization process",
+        "\tonly for the predicate/function with the specified pred id.",
+        "--debug-opt-pred-name <name>",
+        "\tOutput detailed debugging traces of the optimization process",
+        "\tonly for the predicate/function with the specified name.",
+        "--debug-pd",
+        "\tOutput detailed debugging traces of the partial",
+        "\tdeduction and deforestation process.",
+        "--debug-liveness <pred_id>",
+        "\tOutput detailed debugging traces of the liveness analysis",
+        "\tof the predicate with the given predicate id.",
+        "--debug-make",
+        "\tOutput detailed debugging traces of the `--make' option.",
+% This can be uncommented when the '--analyse-closures' option is uncommented.
+% (See below.)
+%       "--debug-closure",
+%       "\tOutput detailed debugging traces of the closure analysis."
+        "--debug-trail-usage",
+        "\tOutput detailed debugging traces of the `--analyse-trail-usage'",
+        "\toption.",
+        "--debug-intermodule-analysis",
+        "\tOutput detailed debugging traces of the `--intermodule-analysis'",
+        "\toption.",
+        "--debug-indirect-reuse",
+        "\tOutput detailed debugging traces of the indirect reuse pass of",
+        "\t`--structure-reuse' option.",
+        "--debug-type-rep",
+        "\tOutput debugging traces of type representation choices."
+% The mode constraints code is still experimental so this option is
+% currently commented out.
+%         "--debug-mode-constraints",
+%         "\tOutput detailed debugging traces of the `--prop-mode-constraints'",
+%         "\toption."
+    ]).
+
+:- pred options_help_output(io::di, io::uo) is det.
+
+options_help_output -->
+    io.write_string("\nOutput Options:\n"),
+    write_tabbed_lines([
+        "These options are mutually exclusive.",
+        "Only the first one specified will apply.",
+        "If none of these options are specified, the default action",
+        "is to link the named modules to produce an executable.\n",
+        "-f, --generate-source-file-mapping",
+        "\tOutput the module name to file name mapping for the list",
+        "\tof source files given as non-option arguments to mmc",
+        "\tto `Mercury.modules'. This must be done before",
+        "\t`mmc --generate-dependencies' if there are any modules",
+        "\tfor which the file name does not match the module name.",
+        "\tIf there are no such modules the mapping need not be",
+        "\tgenerated.",
+        "-M, --generate-dependencies",
+        "\tOutput `Make'-style dependencies for the module",
+        "\tand all of its dependencies to `<module>.dep'.",
+        "--generate-dependency-file",
+        "\tOutput `Make'-style dependencies for the module",
+        "\tto `<module>.d'.",
+        "--generate-module-order",
+        "\tOutput the strongly connected components of the module",
+        "\tdependency graph in top-down order to `<module>.order'.",
+        "\tImplies --generate-dependencies.",
+        "--generate-standalone-interface <basename>",
+        "\tOutput a stand-alone interface.",
+        "\t<basename> is used as the basename of any files generated for",
+        "\tthe stand-alone interface.  (See the Stand-alone Interface",
+        "\tchapter of the Mercury User's Guide for further details.)",
+        "-i, --make-int, --make-interface",
+        "\tWrite the module interface to `<module>.int',",
+        "\tand write the short interface to `<module>.int2'",
+        "\tThis option should only be used by mmake.",
+        "--make-priv-int, --make-private-interface",
+        "\tWrite the private interface to `<module>.int0'.",
+        "\tThis option should only be used by mmake.",
+        "--make-short-int, --make-short-interface",
+        "\tWrite the unqualified short interface to `<module>.int3'.",
+        "\tThis option should only be used by mmake.",
+        "--make-opt-int, --make-optimization-interface",
+        "\tWrite inter-module optimization information to",
+        "\t`<module>.opt'.",
+        "\tThis option should only be used by mmake.",
+        "--make-trans-opt",
+        "--make-transitive-optimization-interface",
+        "\tOutput transitive optimization information",
+        "\tinto the `<module>.trans_opt' file.",
+        "\tThis option should only be used by mmake.",
+        "-x,--make-xml-doc,--make-xml-documentation",
+        "\tOutput XML documentation of the module",
+        "\tinto the `<module>.xml' file.",
+        "\tThis option should only be used by mmake.",
+        "-P, --convert-to-mercury",
+        "\tConvert to Mercury. Output to file `<module>.ugly'",
+        "\tThis option acts as a Mercury ugly-printer.",
+        "-t, --typecheck-only",
+        "\tJust check that the code is syntactically correct and",
+        "\ttype-correct. Don't check modes or determinism,",
+        "\tand don't generate any code.",
+        "-e, --errorcheck-only",
+        "\tCheck the module for errors, but do not generate any code.",
+        "-C, --target-code-only",
+        "\tGenerate target code (i.e. C code in `<module>.c',",
+        "\tIL code in `<module>.il', or Java code in",
+        "\t`<module>.java'), but not object code.",
+        "-c, --compile-only",
+        "\tGenerate C code in `<module>.c' and object code in `<module>.o'",
+        "\tbut do not attempt to link the named modules.",
+        % --compile-to-shared-lib is intended only for use
+        % by the debugger's interactive query facility,
+        % so it isn't documented.
+        "--output-grade-string",
+        "\tCompute the grade of the library to link with based on",
+        "\tthe command line options, and print it to the standard",
+        "\toutput.",
+        "--output-link-command",
+        "\tPrint the command used to link executables to the",
+        "\tstandard output.",
+        "--output-shared-lib-link-command",
+        "\tPrint the command used to link shared libraries to the",
+        "\tstandard output.",
+        "--output-libgrades",
+        "\tPrint the list of compilation grades in which a library",
+        "\tto be installed should be built to the standard output.",
+        "--output-cc",
+        "\tPrint the command used to invoke the C compiler to the",
+        "\tstandard output.",
+        "--output-cc-type, --output-c-compiler-type",
+        "\tPrint the C compiler type to the standard output.",
+        "--output-cflags",
+        "\tPrint the flags with which the C compiler will be invoked",
+        "\tto the standard output.",
+        "--output-csharp-compiler-type",
+        "\tPrint the C# compiler type to the standard output.",
+        "--output-library-link-flags",
+        "\tPrint the flags that are passed to linker in order to link",
+        "\tagainst the current set of libraries.  This includes the",
+        "\tstandard library as well as any other libraries specified",
+        "\tvia the --ml option.  The flags are printed to the standard",
+        "\toutput.",
+        "--output-grade-defines",
+        "\tPrint the flags that are passed to the C compiler to define the",
+        "\tmacros used to specify the compilation grade.",
+        "\tThe flags are printed to the standard output.",
+        "--output-c-include-dir-flags, --output-c-include-directory-flags", 
+        "\tPrint the flags that are passed to the C compiler to specify",
+        "\twhich directories to search for C header files.",
+        "\tThis includes the C header files from the standard library.",
+        "\tThe flags are printed to the standard output."
+    ]).
+        
+:- pred options_help_aux_output(io::di, io::uo) is det.
+
+options_help_aux_output -->
+    io.write_string("\nAuxiliary Output Options:\n"),
+    write_tabbed_lines([
+        "--smart-recompilation",
+        "\tWhen compiling, write program dependency information",
+        "\tto be used to avoid unnecessary recompilations if an",
+        "\timported module's interface changes in a way which does",
+        "\tnot invalidate the compiled code. `--smart-recompilation'",
+        "\tdoes not yet work with `--intermodule-optimization'.",
+        "--no-assume-gmake",
+        "\tWhen generating `.dep' files, generate Makefile",
+        "\tfragments that use only the features of standard make;",
+        "\tdo not assume the availability of GNU Make extensions.",
+        "\tWhen generating `.dep' files, generate dependencies",
+        "\tfor use by `mmc --make' in addition to the dependencies",
+        "\tused by mmake.",
+        "--generate-mmc-deps",
+        "--generate-mmc-make-module-dependencies",
+        "\tGenerate dependencies for use by `mmc --make' even",
+        "\twhen using Mmake. This is recommended when building a",
+        "\tlibrary for installation.",
+
+% XXX The source-to-source debugging transform is not ready for public
+% consumption.
+        %"--link-ssdebug-libs",
+        %"--link-ssdb-libs",
+        %"\tLink the source to source debugging libraries into the",
+        %"\tthe executable.",
+        %"--ss-trace {none, shallow, deep}",
+        %"\tThe trace level to use for source to source debugging of",
+        %"\tthe given module.",
+
+% "--trace decl" is not documented, because it is for backwards
+% compatibility only.  It is now equivalent to `--trace rep'.
+%       "--trace {minimum, shallow, deep, decl, rep, default}",
+        "--trace {minimum, shallow, deep, rep, default}",
+        "\tGenerate code that includes the specified level",
+        "\tof execution tracing.",
+        "\tSee the Debugging chapter of the Mercury User's Guide",
+        "\tfor details.",
+        "--exec-trace-tail-rec",
+        "\tGenerate TAIL events for self-tail-recursive calls instead of",
+        "\tEXIT events. This allows these recursive calls to reuse",
+        "\ttheir parent call's stack frame, but it also means that",
+        "\tthe debugger won't have access to the contents of the reused",
+        "\tstack frames",
+%       "--suppress-trace <suppress-items>,",
+%       "\tSuppress the named aspects of the execution tracing system.",
+%       This is a developer-only option:
+%       "--force-disable-trace",
+%       "\tForce tracing to be set to trace level none.",
+%       "\tThis overrides all other tracing/grade options.",
+%       "\tIts main use is to turn off tracing in the browser",
+%       "\tdirectory, even for .debug and .decldebug grades.",
+        "--trace-optimized",
+        "\tDo not disable optimizations that can change the trace.",
+% "--trace-prof" is not documented because if is only intended for developers
+% of the deep profiler.
+%       "--trace-prof"",
+%       "\tEnable tracing of deep profiling service predicates.",
+% I/O tabling is deliberately not documented. It is mean to be switched on,
+% with consistent parameters, in debugging grades, and to be consistently
+% switched off in non-debugging grades. Inconsistent use of the options
+% governing I/O tabling can yield core dumps from the debugger, so these
+% options are for implementors only.
+%       "--trace-table-io",
+%       "\tEnable the tabling of I/O actions, to allow the debugger",
+%       "\tto execute retry commands across I/O actions.",
+%       "--trace-table-io-only-retry",
+%       "\tSet up I/O tabling to support only retries across I/O",
+%       "\tactions, not the printing of actions or declarative",
+%       "\tdebugging. This reduces the size of the I/O action table.",
+%       "--trace-table-io-states",
+%       "\tWhen tabling I/O actions, table the io.state arguments",
+%       "\ttogether with the others. This should be required iff",
+%       "\tvalues of type io.state actually contain information.",
+%       "--trace-table-io-require",
+%       "\tRequire the tabling of I/O actions, i.e. generate an error",
+%       "\tif an I/O primitive does not have the tabled_for_io",
+%       "\tannotation.",
+%       "--trace-table-io-all",
+%       "\tTable all I/O actions even in the absence of annotations.",
+%       "\tIf a primitive has no annotation specifying the type of",
+%       "\ttabling required, deduce it from the values of the other",
+%       "\tannotations.",
+        "--trace-flag <keyword>",
+        "\tEnable the trace goals that depend on the <keyword> trace flag.",
+        "--profile-optimized",
+        "\tDo not disable optimizations that can distort deep profiles.",
+        "--no-delay-death",
+        "\tWhen the trace level is `deep', the compiler normally",
+        "\tpreserves the values of variables as long as possible, even",
+        "\tbeyond the point of their last use, in order to make them",
+        "\taccessible from as many debugger events as possible.",
+        "\tHowever, it will not do this if this option is given.",
+        "--delay-death-max-vars <N>",
+        "\tDelay the deaths of variables only when the number of variables",
+        "\tin the procedure is no more than N. The default value is 1000.",
+        "--stack-trace-higher-order",
+        "\tEnable stack traces through predicates and functions with",
+        "\thigher-order arguments, even if stack tracing is not",
+        "\tsupported in general.",
+%       This is a developer-only option:
+%       "--force-disable-ssdebug",
+%       "\tDisable ssdebug transformation even in ssdebug grades.",
+%       "--tabling-via-extra-args",
+%       "\tGenerate output via extra_args in foreign_procs.",
+%       "--allow-table-reset",
+%       "\tGenerate C code for resetting tabling data structures.",
+        "--generate-bytecode",
+        "\tOutput a bytecode form of the module for use",
+        "\tby an experimental debugger.",
+        "-n-, --no-line-numbers",
+        "\tDo not put source line numbers in the generated code.",
+        "\tThe generated code may be in C (the usual case),",
+        "\tor in Mercury (with the option --convert-to-mercury).",
+        "--auto-comments",
+        "\tOutput comments in the `<module>.c' file.",
+% This option is for developers only. Since it can include one C comment inside
+% another, the resulting code is not guaranteed to be valid C.
+%       "--frameopt-comments",
+%       "\tGet frameopt.m to generate comments describing its operation.",
+        "\t(The code may be easier to understand if you also",
+        "\tuse the `--no-llds-optimize' option.)",
+        "--max-error-line-width <n>",
+        "\tSet the maximum width of an error message line to <n> characters",
+        "\t(unless a long single word forces the line over this limit).",
+        "--show-dependency-graph",
+        "\tWrite out the dependency graph to `<module>.dependency_graph'.",
+        "--imports-graph",
+        "\tWrite out the imports graph to `<module>.imports_graph'.",
+        "\tThe imports graph contains the directed graph module A",
+        "\timports module B.",
+        "\tThe resulting file can be processed by the graphviz tools.",
+% This option is for developers only.
+%       "--dump-trace-counts <stage number or name>",
+%       "\tIf the compiler was compiled with debugging enabled and is being",
+%       "\trun with trace counting enabled, write out the trace counts file",
+%       "\tafter the specified stage to `<module>.trace_counts.<num>-<name>'.",
+%       "\tStage numbers range from 1-599.",
+%       "\tMultiple dump options accumulate.",
+        "-d <n>, --dump-hlds <stage number or name>",
+        "\tDump the HLDS (high level intermediate representation) after",
+        "\tthe specified stage to `<module>.hlds_dump.<num>-<name>'.",
+        "\tStage numbers range from 1-599.",
+        "\tMultiple dump options accumulate.",
+        "--dump-hlds-pred-id <n>",
+        "\tDump the HLDS only of the predicate/function with the given",
+        "\tpred id.",
+        "--dump-hlds-pred-name <name>",
+        "\tDump the HLDS only of the predicate/function with the given",
+        "\tname.",
+% This option is for developers only.
+%       "-D, --dump-hlds-alias <dump-alias>",
+%       "\tWith `--dump-hlds', include extra detail in the dump.",
+%       "\tEach dump alias is shorthand for a set of option letters.",
+%       "\tThe list of aliases is in handle_options.m",
+        "--dump-hlds-options <options>",
+        "\tWith `--dump-hlds', include extra detail in the dump.",
+        "\tEach type of detail is included in the dump if its",
+        "\tcorresponding letter occurs in the option argument",
+        "\t(see the Mercury User's Guide for details).",
+        "--dump-hlds-inst-limit <N>",
+        "\tDump at most N insts in each inst table.",
+        "--dump-hlds-file-suffix <suffix>",
+        "\tAppend the given suffix to the names of the files created by",
+        "\tthe `--dump-hlds' option.",
+        "--dump-same-hlds",
+        "\tCreate a file for a HLDS stage even if the file notes only that",
+        "\tthis stage is identical to the previously dumped HLDS stage.",
+        "--dump-mlds <stage number or name>",
+        "\tDump the MLDS (medium level intermediate representation)",
+        "\tafter the specified stage, as C code,",
+        "\tto`<module>.c_dump.<num>-<name>',",
+        "\tand `<module>.h_dump.<num>-<name>'.",
+        "\tStage numbers range from 1-99.",
+        "\tMultiple dump options accumulate.",
+        "--verbose-dump-mlds <stage number or name>",
+        "\tDump the internal compiler representation of the MLDS, after",
+        "\tthe specified stage, to `<module>.mlds_dump.<num>-<name>'."
+% The mode constraints code is still experimental so these options are
+% currently commented out.
+%       "--mode-constraints"
+%       "\tRun constraint based mode analysis. The default is to",
+%       "\tuse the robdd solution using the full (subtyping)",
+%       "\tconstraints and dump results.",
+%       "--simple-mode-constraints",
+%       "\tUse only the simplified constraint system when running",
+%       "\tthe robdd solver constraints based mode analysis.",
+%       "--prop-mode-constraints",
+%       "\tUse the new propagation solver for constraints based",
+%       "\tmode analysis.",
+% IL options are commented out to reduce confusion.
+%       "--sign-assembly",
+%       "\tSign the current assembly with the Mercury strong name.",
+%       "\tTo use assemblies created with this command all the Mercury",
+%       "\tmodules must be compiled with this option enabled.",
+%       "\tThis option is specific to the IL backend, and is likely",
+%       "\tto be deprecated at a later date."
+
+        /* XXX currently broken.
+        "--separate-assemblies",
+        "\tPlace sub-modules in separate assemblies.",
+        "\tThis option is specific to the IL backend."
+        */
+    ]).
+
+:- pred options_help_semantics(io::di, io::uo) is det.
+
+options_help_semantics -->
+    io.write_string("\nLanguage semantics options:\n"),
+    io.write_string("(See the Mercury language reference manual for detailed explanations.)\n"),
+    write_tabbed_lines([
+        "--no-reorder-conj",
+        "\tExecute conjunctions left-to-right except where the modes imply",
+        "\tthat reordering is unavoidable.",
+        "--no-reorder-disj",
+        "\tExecute disjunctions strictly left-to-right.",
+        "--no-fully-strict",
+        "\tAllow infinite loops or goals with determinism erroneous to be",
+        "\toptimised away.",
+        "--allow-stubs",
+        "\tAllow procedures to have no clauses.  Any calls to",
+        "\tsuch procedures will raise an exception at run-time.",
+        "\tThis option is sometimes useful during program development.",
+        "\t(See also the documentation for the `--warn-stubs' option",
+        "\tin the ""Warning Options"" section.)",
+        "--infer-all",
+        "\tAbbreviation for `--infer-types --infer-modes --infer-det'.",
+        "--infer-types",
+        "\tIf there is no type declaration for a predicate or function,",
+        "\ttry to infer the type, rather than just reporting an error.",
+        "--infer-modes",
+        "\tIf there is no mode declaration for a predicate,",
+        "\ttry to infer the modes, rather than just reporting an error.",
+
+        "--no-infer-det, --no-infer-determinism",
+        "\tIf there is no determinism declaration for a procedure,",
+        "\tdon't try to infer the determinism, just report an error.",
+        "--type-inference-iteration-limit <n>",
+        "\tPerform at most <n> passes of type inference (default: 60).",
+        "--mode-inference-iteration-limit <n>",
+        "\tPerform at most <n> passes of mode inference (default: 30).",
+        "--event-set-file-name <filename>",
+        "\tGet the specification of user-defined events from <filename>."
+    ]).
+
+
+:- pred options_help_ctgc(io::di, io::uo) is det.
+
+options_help_ctgc -->
+    io.write_string("\nCompile Time Garbage Collection Options:\n"),
+    write_tabbed_lines([
+        "--structure-sharing",
+        "\tPerform structure sharing analysis.",
+        "--structure-sharing-widening <n>",
+        "\tPerform widening when the set of structure sharing pairs becomes",
+        "\tlarger than <n>. When n=0, widening is not enabled.",
+        "\t(default: 0).",
+        "--structure-reuse, --ctgc",
+        "\tPerform structure reuse analysis (Compile Time Garbage ",
+        "\tCollection).",
+        "--structure-reuse-constraint {same_cons_id, ",
+        "\twithin_n_cells_difference}, --ctgc-constraint {same_cons_id,",
+        "\twithin_n_cells_difference}",
+        "\tConstraint on the way we allow structure reuse. `same_cons_id'",
+        "\tspecifies that reuse is only allowed between terms of the same",
+        "\ttype and constructor. `within_n_cells_difference' states that",
+        "\treuse is allowed as long as the arities between the reused term",
+        "\tand new term does not exceed a certain threshold. The threshold ",
+        "\tneeds to be set using `--structure-reuse-constraint-arg'.",
+        "\t(default: within_n_cells_difference, with threshold 0)",
+        "--structure-reuse-constraint-arg, --ctgc-constraint-arg",
+        "\tSpecify the maximum difference in arities between the terms that",
+        "\tcan be reused, and the terms that reuse these terms.",
+        "\t(default: 0)"
+
+% This option is for developers only.
+%       "--structure-reuse-max-conditions",
+%       "\tSoft limit on the number of reuse conditions to accumulate",
+%       "\tfor a procedure. (default: 10)"
+
+% This option is likely to break many optimisations which haven't been updated.
+%       "--structure-reuse-free-cells",
+%       "\tImmediately free cells which are known to be dead but which",
+%       "\tcannot be reused."
+    ]).
+
+:- pred options_help_termination(io::di, io::uo) is det.
+
+options_help_termination -->
+    io.write_string("\nTermination Analysis Options:\n"),
+    write_tabbed_lines([
+        "--enable-term, --enable-termination",
+        "\tAnalyse each predicate to discover if it terminates.",
+        "--chk-term, --check-term, --check-termination",
+        "\tEnable termination analysis, and emit warnings for some",
+        "\tpredicates or functions that cannot be proved to terminate.",
+        "\tIn many cases where the compiler is unable to prove termination",
+        "\tthe problem is either a lack of information about the",
+        "\ttermination properties of other predicates, or because language",
+        "\tconstructs (such as higher order calls) were used which could",
+        "\tnot be analysed.  In these cases the compiler does not emit a",
+        "\twarning of non-termination, as it is likely to be spurious.",
+        "--verb-chk-term, --verb-check-term, --verbose-check-termination",
+        "\tEnable termination analysis, and emit warnings for all",
+        "\tpredicates or functions that cannot be proved to terminate.",
+        "--term-single-arg <n>, --termination-single-argument-analysis <n>",
+        "\tWhen performing termination analysis, try analyzing",
+        "\trecursion on single arguments in strongly connected",
+        "\tcomponents of the call graph that have up to <n> procedures.",
+        "\tSetting this limit to zero disables single argument analysis.",
+        "--termination-norm {simple, total, num-data-elems}",
+        "\tThe norm defines how termination analysis measures the size",
+        "\tof a memory cell. The `simple' norm says that size is always",
+        "\tone.  The `total' norm says that it is the number of words",
+        "\tin the cell.  The `num-data-elems' norm says that it is the",
+        "\tnumber of words in the cell that contain something other",
+        "\tthan pointers to cells of the same type.",
+        "--term-err-limit <n>, --termination-error-limit <n>",
+        "\tPrint at most <n> reasons for any single termination error",
+        "\t(default: 3).",
+        "--term-path-limit <n>, --termination-path-limit <n>",
+        "\tPerform termination analysis only on predicates",
+        "\twith at most <n> paths (default: 256)."
+
+% The following options are used to control the new termination analyser.
+% They are currently disabled because that is still a work-in-progress.
+%
+%       "--enable-term2, --enable-termination2",
+%       "\tAnalyse each predicate to discover if it terminates. ",
+%       "\tThis uses an alternative termination analysis based",
+%       "\ton convex constraints.",
+%       "--chk-term2, --check-termination2",
+%       "\tEnable the alternative termination analysis, and emit warnings for",
+%       "\tsome predicates or functions that cannot be proved to terminate.  In",
+%       "\tmany cases where the compiler is unable to prove termination",
+%       "\tthe problem is either a lack of information about the",
+%       "\ttermination properties of other predicates, or because language",
+%       "\tconstructs (such as higher order calls) were used which could",
+%       "\tnot be analysed.  In these cases the compiler does not emit a",
+%       "\twarning of non-termination, as it is likely to be spurious.",
+%       "--verb-chk-term2, --verb-check-term2, --verbose-check-termination2",
+%       "--termination2-norm {simple, total, num-data-elems}",
+%       "\tTell the alternative termination analyser which norm to use.",
+%       "\tSee the description of the `--termination-norm' option for a",
+%       "\tdescription of the different types of norm available."
+%       "--term2-widening-limit <n>, --termination2-widening-limit <n>",
+%       "\tSet the threshold for the number of iterations after which the",
+%       "\targument size analyser invokes widening.",
+%       "--term2-propagate-failure-constrs, --termination2-propagate-failure-constraints",
+%       "\tMake the argument analyser infer information about the sizes of any"
+%       "\tinputs to a goal in contexts where that goal fails."
+%       "--term2-max-matrix-size <n>, --termination2-maximum-matrix-size <n>",
+%       "\tLimit the sizes of constraints systems in the analyser to <n>",
+%       "\tconstraints.  Use approximations of some constraint operations,",
+%       "\tsuch as projection, if this threshold is exceeded.  This will",
+%       "\tspeed up the analysis at the cost of reduced precision.",
+
+% This option is for developers only.
+% It is useful for benchmarking the argument size analysis.
+%       "--term2-argument-size-analysis-only, --term2-arg-size-analysis-only",
+%       "\tPerform argument size analysis on each SCC but do not",
+%       "\tattempt to infer termination,"
+    ]).
+
+:- pred options_help_compilation_model(io::di, io::uo) is det.
+
+options_help_compilation_model -->
+    io.write_string("\nCompilation model options:\n"),
+    write_tabbed_lines([
+        "The following compilation options affect the generated",
+        "code in such a way that the entire program must be",
+        "compiled with the same setting of these options,",
+        "and it must be linked to a version of the Mercury",
+        "library which has been compiled with the same setting.",
+        "",
+        "-s <grade>, --grade <grade>",
+        "\tSelect the compilation model. The <grade> should be one of",
+        "\tthe base grades `none', `reg', `jump', `asm_jump', `fast', ",
+        "\t`asm_fast', `hl', `hlc', `il', or `java',",
+% The hl, hl_nest, and hlc_nest are not yet documented, because
+% the --high-level-data option is not yet supported for C,
+% and the --gcc-nested-functions option is not yet documented.
+% The ilc grade is not documented because it is not useful;
+% it has been superceded by the il grade.
+        "\tor one of those with one or more of the grade modifiers",
+        "\t`.gc', `.mps', `.prof', `.memprof', `.profdeep', `.tr',",
+        "\t`.spf', `.stseg', `.debug', `.par' and/or `.pic_reg' appended.",
+        "\tDepending on your particular installation, only a subset",
+        "\tof these possible grades will have been installed.",
+        "\tAttempting to use a grade which has not been installed",
+        "\twill result in an error at link time."
+    ]),
+
+    io.write_string("\n    Target selection compilation model options:\n"),
+    write_tabbed_lines([
+        "--target c\t\t\t(grades: none, reg, jump, fast,",
+        "\t\t\t\t\tasm_jump, asm_fast, hl, hlc)",
+        "--target il\t\t\t(grades: il)",
+        "--target csharp\t\t\t(grades: csharp)",
+        "--target java\t\t\t(grades: java)",
+        "--target erlang\t\t\t(grades: erlang)",
+        "\tSpecify the target language: C, IL, C#, Java or Erlang.",
+        "\tThe default is C.  ""IL"" (also known as ""CIL"" or ""MSIL"")",
+        "\tis the Intermediate Language for the .NET Common Language",
+        "\tRuntime.",
+        "\tTargets other than C imply `--high-level-code' (see below).",
+
+% IL options are commented out to reduce confusion.
+%       "--il",
+%       "\tAn abbreviation for `--target il'.",
+%       "--il-only",
+%       "\tAn abbreviation for `--target il --target-code-only'.",
+%       "\tGenerate IL code in `<module>.il', but do not generate",
+%       "\tobject code.",
+%
+%       "--dotnet-library-version <version-number>",
+%       "\tThe version number for the mscorlib assembly distributed",
+%       "\twith the Microsoft .NET SDK.",
+%
+%       "--no-support-ms-clr",
+%       "\tDon't use MS CLR specific workarounds in the generated code.",
+%
+%       "--support-rotor-clr",
+%       "\tUse specific workarounds for the ROTOR CLR in the generated",
+%       "\tcode.",
+
+        "--csharp",
+        "\tAn abbreviation for `--target csharp'.",
+        "--csharp-only",
+        "\tAn abbreviation for `--target csharp --target-code-only'.",
+        "\tGenerate C# code in `<module>.cs', but do not generate",
+        "\tobject code.",
+
+        "--java",
+        "\tAn abbreviation for `--target java'.",
+        "--java-only",
+        "\tAn abbreviation for `--target java --target-code-only'.",
+        "\tGenerate Java code in `<module>.java', but do not generate",
+        "\tobject code.",
+
+        "--erlang",
+        "\tAn abbreviation for `--target erlang'.",
+        "--erlang-only",
+        "\tAn abbreviation for `--target erlang --target-code-only'.",
+        "\tGenerate Erlang code in `<module>.erl', but do not generate",
+        "\tobject code.",
+
+        "--compile-to-c",
+        "\tAn abbreviation for `--target c --target-code-only'.",
+        "\tGenerate C code in `<module>.c', but do not generate object",
+        "\tcode."
+    ]),
+
+    io.write_string("\n    Optional feature compilation model options:\n"),
+    io.write_string("      Debugging\n"),
+    write_tabbed_lines([
+        "--debug\t\t\t\t(grade modifier: `.debug')",
+        "\tEnable Mercury-level debugging.",
+        "\tSee the Debugging chapter of the Mercury User's Guide",
+        "\tfor details.",
+        "\tThis option is not yet supported for the `--high-level-code'",
+        "\tback-ends.",
+        "--decl-debug\t\t\t\t(grade modifier: `.decldebug')",
+        "\tEnable full support for declarative debugging.",
+        "\tThis allows subterm dependency tracking in the declarative",
+        "\tdebugger.",
+        "\tSee the Debugging chapter of the Mercury User's Guide",
+        "\tfor details.",
+        "\tThis option is not yet supported for the `--high-level-code'",
+        "\tback-ends."
+% XXX The source-to-source debugging transform is not ready for public
+% consumption.
+%       "--ss-debug\t\t\t\t(grade modifier: `.ssdebug')",
+%       "\tEnable the source-to-source debugging transform."
+    ]),
+    io.write_string("      Profiling\n"),
+    write_tabbed_lines([
+        "-p, --profiling, --time-profiling",
+        "\t\t\t\t(grade modifier: `.prof')",
+        "\tEnable time and call profiling.  Insert profiling hooks in the",
+        "\tgenerated code, and also output some profiling",
+        "\tinformation (the static call graph) to the file",
+        "\t`<module>.prof'.",
+        "\tThis option is not supported for the IL, C# or Java back-ends.",
+        "--memory-profiling\t\t(grade modifier: `.memprof')",
+        "\tEnable memory and call profiling.",
+        "\tThis option is not supported for the IL, C# or Java back-ends.",
+        "--deep-profiling\t\t(grade modifier: `.profdeep')",
+        "\tEnable deep profiling.",
+        "\tThis option is not supported for the high-level C, IL, C#",
+        "\tor Java back-ends.",
+
+% This option is not documented, it is intended for use by developers only.
+%
+%       "--pre-prof-transforms-simplify",
+%       "\tForce the pre-profiling simplification pass that is usually",
+%       "\tenabled when building a profiling version of a program.  This",
+%       "\tallows a developer to enable this pass when using a",
+%       "\tnon-profiling build.  It can be used to test that generated code",
+%       "\tintroduced in earlier passes is well-formed before it is",
+%       "\tpotentially removed by the dead procedure elimination pass later",
+%       "\ton.",
+%
+
+% XXX The following options are not documented,
+% because they are currently not useful.
+% The idea was for you to be able to use --profile-calls
+% and --profile-time separately, but that doesn't work
+% because compiling with --profile-time instead of
+% --profile-calls results in different code addresses,
+% so you can't combine the data from versions of
+% your program compiled with different options.
+%
+%       "--profile-calls\t\t(grade modifier: `.profcalls')",
+%       "\tSimilar to `--profiling', except that only gathers",
+%       "\tcall counts, not timing information.",
+%       "\tUseful on systems where time profiling is not supported,",
+%       "\tbut not as useful as `--memory-profiling'.",
+%       "--profile-time\t\t(grade modifier: `.proftime')",
+%       "\tSimilar to `--profiling', except that it only gathers",
+%       "\ttiming information, not call counts.",
+%       "--profile-memory\t\t(grade modifier: `.profmem')",
+%       "\tSimilar to `--memory-profiling', except that it only",
+%       "\tgathers memory usage information, not call counts.",
+
+        "--no-coverage-profiling",
+        "\tDisable coverage profiling.",
+% The following options are for implementors only (intended for experiments).
+%       "--coverage-profiling-via-calls",
+%       "\tUse calls to implement coverage points, not inline foreign code.",
+
+%       "--coverage-profiling-static",
+%       "\tDisable dynamic coverage profiling, this uses less memory and may ",
+%       "\tbe faster.",
+
+%       "Switches to effect coverage profiling (part of deep profiling). ",
+%       "they enable different types of coverage points.",
+
+%       "--no-profile-deep-coverage-after-goal",
+%       "\tDisable coverage points after goals.",
+%       "--no-profile-deep-coverage-branch-ite",
+%       "\tDisable coverage points at the beginning of then and else",
+%       "\tbranches.",
+%       "--no-profile-deep-coverage-branch-switch",
+%       "\tDisable coverage points at the beginning of switch branches.",
+%       "--no-profile-deep-coverage-branch-disj",
+%       "\tDisable coverage points at the beginning of disjunction branches.",
+
+%       I beleive these options are broken - pbone.
+%       "Switches to tune the coverage profiling pass, useful for ",
+%       "debugging.",
+%
+%       "--no-profile-deep-coverage-use-portcounts",
+%       "\tTurn off usage of port counts in the deep profiler to provide",
+%       "\tsome coverage information.",
+%       "--no-profile-deep-coverage-use-trivial",
+%       "\tTurn off usage of trivial goal information",
+
+        "--profile-for-feedback",
+        "\tSelect deep profiling options suitable for profiler directed",
+        "\timplicit parallelism.",
+        "\t--profile-for-implicit-parallelism is a deprecated synonym for",
+        "\tthis option",
+
+        "--record-term-sizes-as-words\t\t(grade modifier: `.tsw')",
+        "\tAugment each heap cells with its size in words.",
+        "--record-term-sizes-as-cells\t\t(grade modifier: `.tsc')",
+        "\tAugment each heap cells with its size in cells.",
+
+        "--experimental-complexity=<filename>\t\t",
+        "\tEnable experimental complexity analysis for the predicates",
+        "\tlisted in the given file.",
+        "\tThis option is supported for the C back-end, with",
+        "\t--no-highlevel-code.",
+
+        "--threadscope\t\t(grade modifier: `.threadscope')",
+        "\tEnable support for profiling parallel execution.",
+        "\tThis option is supported by the low-level C back-end parallel",
+        "\tgrades on some processors, See README.ThreadScope for details."
+    ]),
+
+    io.write_string("      Miscellaneous optional features\n"),
+    write_tabbed_lines([
+        "--gc {none, boehm, hgc, mps, accurate, automatic}",
+        "--garbage-collection {none, boehm, hgc, mps, accurate, automatic}",
+        "\t\t\t\t(`java', `csharp', `il' and `erlang'",
+        "\t\t\t\t\tgrades use `--gc automatic',",
+        "\t\t\t\t`.gc' grades use `--gc boehm',",
+        "\t\t\t\t`.hgc' grades use `--gc hgc',",
+        "\t\t\t\t`.mps' grades use `--gc mps',",
+        "\t\t\t\tother grades use `--gc none'.)",
+        "\tSpecify which method of garbage collection to use",
+        "\t(default: boehm).",
+        "\t`boehm' is Hans Boehm et al's conservative collector.",
+        "\t`hgc' is our own conservative collector;",
+        "\t`accurate' is our own type-accurate copying GC;",
+        "\tit requires `--high-level-code'.",
+        "\t`mps' is a different conservative collector, based on",
+        "\tRavenbrook Limited's MPS (Memory Pool System) kit.",
+        "\t`automatic' means the target language provides it.",
+        "\tThis is the case for the IL, C#, Java and Erlang back-ends,",
+        "\twhich always use the garbage collector of the underlying",
+        "\timplementation.",
+        "--use-trail\t\t\t(grade modifier: `.tr')",
+        "\tEnable use of a trail.",
+        "\tThis is necessary for interfacing with constraint solvers,",
+        "\tor for backtrackable destructive update.",
+        "\tThis option is not yet supported for the IL, C# or Java back-ends.",
+        "--trail-segments\t\t\t(grade modifier: `.trseg')",
+        "\tAs above, but use a dynamically sized trail that is composed",
+        "\tof small segments.  This can help to avoid trail exhaustion",
+        "\tat the cost of increased execution time.",
+        "--parallel\t\t(grade modifier: `.par')",
+        "\tEnable parallel execution support for the low-level C grades.",
+        "\tEnable concurrency (via pthreads) for the high-level C grades.",
+        "--maybe-thread-safe {yes, no}",
+        "\tSpecify how to treat the `maybe_thread_safe' foreign code",
+        "\tattribute.  `yes' means that a foreign procedure with the",
+        "\t`maybe_thread_safe' option is treated as though it has a",
+        "\t`thread_safe' attribute.  `no' means that the foreign",
+        "\tprocedure is treated as though it has a `not_thread_safe'",
+        "\tattribute.  The default is no.",
+        "--single-prec-float\t\t(grade modifier: `.spf')",
+        "\tUse single precision floats so that, on 32-bit machines,",
+        "\tfloating point values don't need to be boxed.  Double",
+        "\tprecision floats are used by default."
+        % This is commented out as this feature is still experimental.
+        %"--extend-stacks-when-needed",
+        %"\tSpecify that code that increments a stack pointer must",
+        %"\textend the stack when this is needed.",
+        % RBMM is undocumented since it is still experimental.
+        % should also document rbmmd rbmmp rbmmdp
+        %"--use-regions\t\t(grade modifier: `.rbmm')",
+        %"\tEnable support for region-based memory managment."
+        %"--use-alloc-regions",
+        %"\tCompute and use the exact set of regions",
+        %"\t that may be allocated into by a call."
+    ]),
+
+    io.write_string("\n    LLDS back-end compilation model options:\n"),
+    write_tabbed_lines([
+
+        "--gcc-global-registers\t\t(grades: reg, fast, asm_fast)",
+        "--no-gcc-global-registers\t(grades: none, jump, asm_jump)",
+        "\tSpecify whether or not to use GNU C's",
+        "\tglobal register variables extension.",
+        "\tThis option is ignored if the `--high-level-code' option is",
+        "\tenabled.",
+        "--gcc-non-local-gotos\t\t(grades: jump, fast, asm_jump, asm_fast)",
+        "--no-gcc-non-local-gotos\t(grades: none, reg)",
+        "\tSpecify whether or not to use GNU C's",
+        "\t""labels as values"" extension.",
+        "\tThis option is ignored if the `--high-level-code' option is",
+        "\tenabled.",
+        "--asm-labels\t\t\t(grades: asm_jump, asm_fast)",
+        "--no-asm-labels\t\t\t(grades: none, reg, jump, fast)",
+        "\tSpecify whether or not to use GNU C's",
+        "\tasm extensions for inline assembler labels.",
+        "\tThis option is ignored if the `--high-level-code' option is",
+        "\tenabled.",
+        "--pic-reg\t\t\t(grade modifier: `.pic_reg')",
+        "[For Unix with intel x86 architecture only]",
+        "\tSelect a register usage convention that is compatible,",
+        "\twith position-independent code (gcc's `-fpic' option).",
+        "\tThis is necessary when using shared libraries on Intel x86",
+        "\tsystems running Unix.  On other systems it has no effect.",
+        "--stack-segments\t\t(grade modifier: `.stseg')",
+        "\tSpecify whether to use dynamically sized stacks that are",
+        "\tcomposed of small segments.  This can help to avoid stack",
+        "\texhaustion at the cost of increased execution time.",
+        "\tThis option is ignored if the `--high-level-code' option is",
+        "\tenabled."
+        % This is a developer only option.
+%       "--use-float-registers",
+%       "(This option is not for general use.)",
+%       "\tUse float registers for argument passing."
+    ]),
+
+    io.write_string("\n    MLDS back-end compilation model options:\n"),
+    write_tabbed_lines([
+% These grades (hl_nest, and hlc_nest) are not yet documented,
+% because the --gcc-nested-functions option is not yet documented.
+%       "-H, --high-level-code\t\t\t(grades: hl_nest, hlc_nest)",
+% The ilc grade is not documented because it is not useful;
+% it has been superceded by the il grade.
+        "-H, --high-level-code\t\t\t(grades: hl, hlc, il, csharp, java)",
+        "\tUse an alternative back-end that generates high-level code",
+        "\trather than the very low-level code that is generated by our",
+        "\toriginal back-end.",
+% The hl_nest grade is not yet documented,
+% because the --gcc-nested-functions option is not yet documented.
+% because it is not yet supported
+%       "--high-level-data\t\t\t(grades: hl, hl_nest, il, csharp, java)",
+        "--high-level-data\t\t\t(grades: hl, il, csharp, java)",
+        "\tUse an alternative higher-level data representation.",
+%       "--high-level\t\t\t(grades: hl, hl_nest, il, csharp, java)",
+        "--high-level\t\t\t(grades: hl, il, csharp, java)",
+        "\tAn abbreviation for `--high-level-code --high-level-data'."
+% The --gcc-nested-functions option is not yet documented,
+% because it doesn't pass our test suite, and it is
+% probably not very useful.
+%       "--gcc-nested-functions\t\t(grades: hl_nest, hlc_nest)",
+%       "\tSpecify whether or not to use GNU C's nested functions extension.",
+%       "\tThis option is ignored if the `--high-level-code' option is not enabled.",
+% The --det-copy-out option is not yet documented,
+% because it is not yet tested much and probably not very useful,
+% except for Java, where it is the default.
+%       "--det-copy-out",
+%       "\tSpecify whether to handle output arguments for det/semidet",
+%       "\tprocedures using return-by-value rather than pass-by-reference.",
+%       "\tThis option is ignored if the `--high-level-code' option is not enabled.",
+% The --nondet-copy-out option is not yet documented,
+% because it is probably not very useful except for IL and Java,
+% where it is the default.
+%       "--nondet-copy-out\t\t(grades: il, ilc)",
+%       "\tSpecify whether to handle output arguments for nondet",
+%       "\tprocedures using pass-by-value rather than pass-by-reference.",
+%       "\tThis option is ignored if the `--high-level-code' option is not enabled.",
+% The --put-commit-in-own-func option is not documented because
+% it is enabled automatically (by handle_options) in the situations
+% where it is needed; the user should never need to set it.
+%       "--put-commit-in-own-func",
+%       "\tPut each commit in its own C function.",
+%       "\tThis option only affects the MLDS back-ends.",
+%       "\tIt is needed for the high-level C back-end,",
+%       "\twhere commits are implemented via setjmp()/longjmp(),",
+%       "\tsince longjmp() may clobber any non-volatile local vars",
+%       "\tin the function that called setjmp().",
+% The --put-nondet-env-on-heap option is not documented because
+% it is enabled automatically (by handle_options) in the situations
+% where it is needed; the user should never need to set it.
+%       "--put-nondet-env-on-heap",
+%       "\tAllocate the environment structures used for",
+%       "\tnondeterministic Mercury procedures on the heap,",
+%       "\trather than on the stack."
+%   ]),
+%   io.write_string("\n      IL back-end compilation model options:\n"),
+%   write_tabbed_lines([
+%
+% The --verifiable-code option is not yet documented because it is not yet fully
+% implemented.
+%       "--verifiable, --verifiable-code\t\t\t",
+%       "\tEnsure that the generated IL code is verifiable.",
+%
+% The --il-refany-fields option is not documented because currently there
+% are no IL implementations for which it is useful.
+%       "--il-refany-fields",
+%       "\tGenerate IL code that assumes that the CLI implementation",
+%       "\tsupports value types with fields of type `refany'.",
+%       "\tUsing this option could in theory allow more efficient",
+%       "\tverifiable IL code for nondeterministic Mercury procedures,",
+%       "\tif the CLI implementation supported it."
+%       "\tHowever, the current Microsoft CLR does not support it."
+%
+% The --il-byref-tailcalls option is not documented because currently there
+% are no IL implementations for which it is useful.
+%       "--il-byref-tailcalls",
+%       "\tGenerate IL code that assumes that the CLI verifier",
+%       "\tsupports tail calls with byref arguments."
+%
+% The --il-funcptr-types option is not documented because it is not yet
+% implemented.
+%       "--il-funcptr-types",
+%       "\tGenerate IL code that assumes that the IL assembler",
+%       "\tsupports function pointer types."
+%       "\tThe ECMA CLI specification allows function pointer types,"
+%       "\tbut some CLR implementations, e.g. the old Beta 2 version of"
+%       "\tthe Microsoft CLR implementation, do not support them."
+    ]),
+
+    io.write_string("\n    Developer compilation model options:\n"),
+    io.write_string("\n      Data representation\n"),
+    write_tabbed_lines([
+        "--tags {none, low, high}      (This option is not for general use.)",
+        "\tSpecify whether to use the low bits or the high bits of ",
+        "\teach word as tag bits (default: low).",
+    %   "\t\t`--tags none' implies `--num-tag-bits 0'.",
+        "--num-tag-bits <n>            (This option is not for general use.)",
+        "\tUse <n> tag bits.",
+        "--num-reserved-addresses <n>  (This option is not for general use.)",
+        "\tTreat the integer values from 0 up to <n> - 1 as reserved",
+        "\taddresses that can be used to represent nullary constructors",
+        "\t(constants) of discriminated union types.",
+        "--num-reserved-objects <n>    (This option is not for general use.)",
+        "\tAllocate up to <n> global objects per type,",
+        "\tfor representing nullary constructors",
+        "\t(constants) of discriminated union types."
+
+        % The --conf-low-tag-bits option is reserved for use
+        % by the `mmc' script; it is deliberately not documented.
+
+        % The --bits-per-word option is intended for use
+        % by the `mmc' script; it is deliberately not documented.
+
+        % The --bytes-per-word option is intended for use
+        % by the `mmc' script; it is deliberately not documented.
+
+        % This is a developer only option.
+%       "--unboxed-float",
+%       "(This option is not for general use.)",
+%       "\tDon't box floating point numbers.",
+%       "\tThis assumes that a Mercury float will fit in a word.",
+%       "\tThe C code needs to be compiled with `-UBOXED_FLOAT'.",
+%       "\tIt may also need to be compiled with",
+%       "\t`-DUSE_SINGLE_PREC_FLOAT', if double precision",
+%       "\tfloats don't fit into a word."
+
+        % This is a developer only option.
+%       "--no-unboxed-enums",
+%       "(This option is not for general use.)",
+%       "\tBox enumerations.  This option is disabled by default.",
+
+        % This is a developer only option.
+%       "--no-unboxed-no-tag-types",
+%       "(This option is not for general use.)",
+%       "\tBox no-tag types.  This option is disabled by default."
+
+    ]),
+    io.write_string("\n      Developer optional features\n"),
+    write_tabbed_lines([
+        "--use-minimal-model-stack-copy",
+        "(This option is not for general use.)",
+        "\tEnable the use of the standard form of minimal model tabling.",
+
+        "--use-minimal-model-own-stacks",
+        "(This option is not for general use.)",
+        "\tEnable the use of an experimental form of minimal model tabling.",
+
+        "--minimal-model-debug",
+        "(This option is not for general use.)",
+        "\tEnables extra data structures that assist in debugging",
+        "\tminimal model tabling.",
+
+        "--no-type-layout",
+        "(This option is not for general use.)",
+        "\tDon't output type_ctor_layout structures or references",
+        "\tto them. (The C code also needs to be compiled with",
+        "\t`-DNO_TYPE_LAYOUT')."
+
+        % This is a developer only option.
+%       "--basic-stack-layout",
+%       "(This option is not for general use.)",
+%       "\tGenerate the simple stack_layout structures required",
+%       "\tfor stack traces.",
+
+        % This is a developer only option.
+%       "--agc-stack-layout",
+%       "(This option is not for general use.)",
+%       "\tGenerate the stack_layout structures required for",
+%       "\taccurate garbage collection.",
+
+        % This is a developer only option.
+%       "--procid-stack-layout",
+%       "(This option is not for general use.)",
+%       "\tGenerate the stack_layout structures required for",
+%       "\tlooking up procedure identification information.",
+
+        % This is a developer only option.
+%       "--trace-stack-layout",
+%       "(This option is not for general use.)",
+%       "\tGenerate the stack_layout structures required for",
+%       "\texecution tracing.",
+
+        % This is a developer only option.
+%       "--body-typeinfo-liveness",
+%       "(This option is not for general use.)",
+%       For documentation, see the comment in the type declaration.
+
+        % This is a developer only option.
+%       "--can-compare-constants-as-ints",
+%       "(This option is not for general use.)",
+%       For documentation, see the comment in the type declaration.
+
+        % This is a developer only option.
+%       "--pretest-equality-cast-pointers",
+%       "(This option is not for general use.)",
+%       For documentation, see the comment in the type declaration.
+
+        % This is a developer only option.
+%       "--can-compare-compound-values"
+%       "(This option is not for general use.)",
+%       For documentation, see the comment in the type declaration.
+
+        % This is a developer only option.
+%       "--lexically-order-constructors"
+%       "(This option is not for general use.)",
+%       For documentation, see the comment in the type declaration.
+
+        % This is a developer only option.
+%       "--mutable-always-boxed",
+%       "(This option is not for general use.)",
+%       For documentation, see the comment in the type declaration.
+
+        % This is a developer only option.
+%       "--delay-partial-instantiations",
+%       "(This option is not for general use.)",
+%       For documentation, see delay_partial_inst.m
+
+        % This is a developer only option.
+%       "--allow-defn-of-builtins",
+%       "(This option is not for general use.)",
+%       For documentation, see the comment in the type declaration.
+
+        % This is a developer only option.
+%       "--special-preds",
+%       "(This option is not for general use.)",
+%       For documentation, see the comment in the type declaration.
+
+        % All these are developer only options.
+%       "(These options are not for general use.)",
+%       For documentation, see runtime/mercury_region.h.
+%       "--size-region-ite-fixed"
+%       "--size-region-disj-fixed"
+%       "--size-region-commit-fixed"
+%       "--size-region-ite-protect"
+%       "--size-region-ite-snapshot"
+%       "--size-region-disj-protect"
+%       "--size-region-disj-snapshot"
+%       "--size-region-commit-entry"
+
+        % This is a developer only option.
+%       "--solver-type-auto-init",
+%       "(This option is not for general use.)",
+%       Allow automatic initialisation of solver types.
+
+        % This is a developer only option.
+%       "--allow-multi-arm-switches",
+%       "(This option is not for general use.)",
+%       Allow the compiler to generate switches in which one arm handles
+%       more than one cons_id.
+
+        % This is a developer only option.
+%       "--type-check-constraints",
+%       "(This option is not for general use.)",
+%       Use the constraint based type checker instead of the old one.
+
+        % This is a developer only option.
+%       "--allow-argument-packing",
+%       "(This option is not for general use.)",
+%       Allow the compiler to pack multiple constructor arguments into
+%       a single field.
+    ]).
+
+:- pred options_help_code_generation(io::di, io::uo) is det.
+
+options_help_code_generation -->
+    io.write_string("\nCode generation options:\n"),
+    write_tabbed_lines([
+%       "--low-level-debug",
+%       "\tEnables various low-level debugging stuff, that was in",
+%       "\tthe distant past used to debug the low-level code generation.",
+%       "\tYou don't want to use this option unless you are hacking",
+%       "\tthe Mercury compiler itself (and probably not even then).",
+%       "\tCauses the generated code to become VERY big and VERY",
+%       "\tinefficient.  Slows down compilation a LOT.",
+
+%       "--table-debug",
+%       "\tEnables the generation of code that helps to debug tabling",
+%       "\tprimitives.",
+
+        "--no-trad-passes",
+        "\tThe default `--trad-passes' completely processes each predicate",
+        "\tbefore going on to the next predicate.",
+        "\tThis option tells the compiler",
+        "\tto complete each phase of code generation on all predicates",
+        "\tbefore going on the next phase on all predicates.",
+    %   "--parallel-liveness",
+    %   "Use multiple threads when computing liveness.",
+    %   "At the moment this option implies `--no-trad-passes',",
+    %   "and requires the compiler to be built in a",
+    %   "low-level parallel grade and running with multiple engines.",
+    %   "--parallel-code-gen",
+    %   "Use multiple threads when generating code.",
+    %   "At the moment this option implies `--no-trad-passes',",
+    %   "and requires the compiler to be built in a",
+    %   "low-level parallel grade and running with multiple engines.",
+    %   "\t--no-polymorphism",
+    %   "\t\tDon't handle polymorphic types.",
+    %   "\t\t(Generates slightly more efficient code, but stops",
+    %   "\t\tpolymorphism from working except in special cases.)",
+        "--no-reclaim-heap-on-nondet-failure",
+        "\tDon't reclaim heap on backtracking in nondet code.",
+        "--no-reclaim-heap-on-semidet-failure",
+        "\tDon't reclaim heap on backtracking in semidet code.",
+        "--no-reclaim-heap-on-failure",
+        "\tCombines the effect of the two options above.",
+
+        "--max-jump-table-size=<n>",
+        "\tThe maximum number of entries a jump table can have.",
+        "\tThe special value 0 indicates the table size is unlimited.",
+        "\tThis option can be useful to avoid exceeding fixed limits",
+        "\timposed by some C compilers.",
+
+        % This is a developer only option.
+%       "--compare-specialization=<n>",
+%       "\tGenerate quadratic instead of linear compare predicates for",
+%       "\ttypes with up to n function symbols. Higher values of n lead to",
+%       "\tfaster but also bigger compare predicates.",
+
+        % This is a developer only option.
+%       "--no-should-pretest-equality",
+%       "\tIf specified, do not add a test for the two values being equal",
+%       "\tas words to the starts of potentially expensive unify and compare",
+%       "\tpredicates."
+
+        "--fact-table-max-array-size <n>",
+        "\tSpecify the maximum number of elements in a single",
+        "\t`:- pragma fact_table' data array (default: 1024).",
+        "--fact-table-hash-percent-full <percentage>",
+        "\tSpecify how full the `:- pragma fact_table' hash tables",
+        "\tshould be allowed to get.  Given as an integer percentage",
+        "\t(valid range: 1 to 100, default: 90)."
+
+% This option is not yet documented because the `--gcc-nested-functions' option
+% is not documented.
+%       "--gcc-local-labels",
+%       "\tThis option has no effect unless both the `--high-level-code' option",
+%       "\tand the `--gcc-nested-functions' options are enabled.",
+%       "\tIf this option is enabled, the Mercury compiler will generate",
+%       "\tC code that uses GNU C's local labels extension to allow",
+%       "\tGNU C nested functions to exit into their containing function",
+%       "\tvia a `goto'.",
+%       "\tIf this option is not enabled, the default behaviour is to",
+%       "\tuse the standard ANSI/ISO C setjmp() and longjmp() functions."
+
+% This option is not yet documented because it is not yet useful -- currently
+% we don't take advantage of GNU C's computed gotos extension.
+%       "--no-prefer-switch",
+%       "\tGenerate code using computed gotos rather than switches.",
+%       "\tThis makes the generated code less readable, but potentially",
+%       "\tslightly more efficient.",
+%       "\tThis option has no effect unless the `--high-level-code' option",
+%       "\tis enabled.  It also has no effect if the `--target' option is",
+%       "\tset to `il'.",
+% This optimization is for implementors only. Turning this option on provides
+% the fairest possible test of --optimize-saved-vars-cell.
+%       "--no-opt-no-return-calls",
+%       "\tDo not optimize the stack usage of calls that cannot return.",
+
+    ]),
+
+    io.write_string("\n    Code generation target options:\n"),
+    write_tabbed_lines([
+        "--branch-delay-slot    \t(This option is not for general use.)",
+        "\tAssume that branch instructions have a delay slot.",
+        "--num-real-r-regs <n>  \t(This option is not for general use.)",
+        "\tAssume registers r1 up to r<n> are real general purpose",
+        "\tregisters.",
+        "--num-real-f-regs <n>  \t(This option is not for general use.)",
+        "\tAssume registers f1 up to f<n> are real floating point",
+        "\tregisters.",
+        "--num-real-r-temps <n> \t(This option is not for general use.)",
+        "\tAssume that <n> non-float temporaries will fit into",
+        "\treal machine registers.",
+        "--num-real-f-temps <n> \t(This option is not for general use.)",
+        "\tAssume that <n> float temporaries will fit into",
+        "\treal machine registers."
+    ]).
+
+:- pred options_help_optimization(io::di, io::uo) is det.
+
+options_help_optimization -->
+    io.write_string("\nOptimization Options:\n"),
+    write_tabbed_lines([
+        "-O <n>, --opt-level <n>, --optimization-level <n>",
+        "\tSet optimization level to <n>.",
+        "\tOptimization level -1 means no optimization",
+        "\twhile optimization level 6 means full optimization.",
+    %   "\t\tFor a full description of each optimization level,",
+    %   "\t\tsee the Mercury User's Guide.",
+        "--opt-space, --optimize-space",
+        "\tTurn on optimizations that reduce code size",
+        "\tand turn off optimizations that significantly",
+        "\tincrease code size.",
+        "--intermod-opt",
+        "--intermodule-optimization",
+        "\tPerform inlining and higher-order specialization of",
+        "\tthe code for predicates imported from other modules.",
+        "\tThis option must be set throughout the compilation process.",
+        "--trans-intermod-opt",
+        "--transitive-intermodule-optimization",
+        "\tImport the transitive intermodule optimization data.",
+        "\tThis data is imported from `<module>.trans_opt' files.",
+        "\tNote that `--transitive-intermodule-optimization' does not",
+        "\twork with `mmc --make'.",
+        "--no-read-opt-files-transitively",
+        "\tOnly read the inter-module optimization information",
+        "\tfor directly imported modules, not the transitive",
+        "\tclosure of the imports.",
+        "--use-opt-files",
+        "\tPerform inter-module optimization using any",
+        "\t`.opt' files which are already built,",
+        "\te.g. those for the standard library, but do",
+        "\tnot build any others.",
+        "--use-trans-opt-files",
+        "\tPerform inter-module optimization using any",
+        "\t`.trans_opt' files which are already built,",
+        "\te.g. those for the standard library, but do",
+        "\tnot build any others.",
+        "--intermodule-analysis",
+        "\tPerform analyses such as termination analysis and",
+        "\tunused argument elimination across module boundaries.",
+        "\tThis option is not yet fully implemented.",
+        "--analysis-repeat <n>",
+        "\tThe maximum number of times to repeat analyses of",
+        "\tsuboptimal modules with `--intermodule-analysis'",
+        "\t(default: 0)."
+        % This is commented out as this feature is still experimental.
+%       "--analysis-file-cache",
+%       "\tEnable caching of parsed analysis files. This may",
+%       "\timprove compile times with `--intermodule-analysis'."
+    ]).
+
+:- pred options_help_hlds_hlds_optimization(io::di, io::uo) is det.
+
+options_help_hlds_hlds_optimization -->
+    io.write_string("\n    High-level (HLDS -> HLDS) optimizations:\n"),
+    write_tabbed_lines([
+        "--no-inlining",
+        "\tDisable all forms of inlining.",
+        "--no-inline-simple",
+        "\tDisable the inlining of simple procedures.",
+        "--no-inline-builtins",
+        "\tGenerate builtins (e.g. arithmetic operators) as calls to",
+        "\tout of line procedures.  This is done by default when,",
+        "\tdebugging, as without this option the execution of",
+        "\tbuiltins is not traced.",
+        "--no-inline-single-use",
+        "\tDisable the inlining of procedures called only once.",
+        "--inline-call-cost <cost>",
+        "\tAssume that the cost of a call is the given parameter.",
+        "\tUsed only in conjunction with --inline-compound-threshold.",
+        "\tmultiplied by the number of times it is called,",
+        "--inline-compound-threshold <threshold>",
+        "\tInline a procedure if its size (measured roughly",
+        "\tin terms of the number of connectives in its internal form)",
+        "\tless the assumed call cost, multiplied by the number of times",
+        "\tit is called is below the given threshold.",
+        "--inline-simple-threshold <threshold>",
+        "\tInline a procedure if its size is less than the",
+        "\tgiven threshold.",
+        "--intermod-inline-simple-threshold",
+        "\tSimilar to `--inline-simple-threshold', except used to",
+        "\tdetermine which predicates should be included in",
+        "\t`.opt' files. Note that changing this between writing",
+        "\tthe `.opt' file and compiling to C may cause link errors,",
+        "\tand too high a value may result in reduced performance.",
+        "--inline-vars-threshold <threshold>",
+        "\tDon't inline a call if it would result in a procedure",
+        "\tcontaining more than <threshold> variables. Procedures",
+        "\tcontaining large numbers of variables can cause",
+        "\tslow compilation.",
+%       "--from-ground-term-threshold <n>",
+%       "\tWrap a from_ground_term scope around the expanded,",
+%       "\tsuperhomogeneous form of a ground term that involves at least.",
+%       "\tthe given number of function symbols.",
+        "--no-const-struct",
+        "\tDisable the gathering of constant structures in a separate table.",
+        "--no-common-struct",
+        "\tDisable optimization of common term structures.",
+%       "--common-struct-preds <predids>",
+%       "\tLimit common struct optimization to the preds with the given ids.",
+
+%       Common goal optimization should not be turned off, since it can
+%       break programs that would otherwise compile properly (e.g.,
+%       benchmarks/icfp2000). This is kept as a developer-only option.
+%
+%       "--no-common-goal",
+%       "\tDisable optimization of common goals.",
+%       "\tAt the moment this optimization",
+%       "\tdetects only common deconstruction unifications.",
+%       "\tDisabling this optimization reduces the class of predicates",
+%       "\tthat the compiler considers to be deterministic.",
+
+        "--constraint-propagation",
+        "\tEnable the constraint propagation transformation,",
+        "\twhich attempts to transform the code so that goals",
+        "\twhich can fail are executed as early as possible.",
+        "--local-constraint-propagation",
+        "\tEnable the constraint propagation transformation,",
+        "\tbut only rearrange goals within each procedure.",
+        "\tSpecialized versions of procedures will not be created.",
+        "--prev-code",
+        "\tMigrate into the start of branched goals.",
+        "--no-follow-code",
+        "\tDon't migrate into the end of branched goals.",
+        "--excess-assign",
+        "\tRemove excess assignment unifications.",
+        "--no-optimize-format-calls",
+        "\tDo not attempt to interpret the format string in calls to",
+        "\tstring.format and related predicates at compile time;",
+        "\talways leave this to be done at runtime.",
+        "--optimize-duplicate-calls",
+        "\tOptimize away multiple calls to a predicate",
+        "\twith the same input arguments.",
+        "--loop-invariants",
+        "\tHoist loop invariants out of loops.",
+        "--delay-constructs",
+        "\tReorder goals to move construction unifications after",
+        "\tprimitive goals that can fail.",
+        % "--optimize-saved-vars-const",
+        % "\tMinimize the number of variables saved across calls by",
+        % "\tintroducing duplicate copies of variables bound to",
+        % "\tconstants in each interval between flushes where they",
+        % "\tare needed.",
+        % "--optimize-saved-vars-cell",
+        % "\tMinimize the number of variables saved across calls by",
+        % "\ttrying to use saved variables pointing to cells to reach",
+        % "\tthe variables stored in those cells.",
+        "--optimize-saved-vars",
+        "\tMinimize the number of variables saved across calls.",
+        "--optimize-unused-args",
+        "\tRemove unused predicate arguments.",
+        "\tThis will cause the compiler to generate more",
+        "\tefficient code for many polymorphic predicates.",
+        "--intermod-unused-args",
+        "\tPerform unused argument removal across module boundaries.",
+        "\tThis option implies `--optimize-unused-args' and",
+        "\t`--intermodule-optimization'.",
+
+        "--optimize-higher-order",
+        "\tEnable specialization of higher-order predicates.",
+        "--type-specialization",
+        "\tEnable specialization of polymorphic predicates where the",
+        "\tpolymorphic types are known.",
+        "--user-guided-type-specialization",
+        "\tEnable specialization of polymorphic predicates for which",
+        "\tthere are `:- pragma type_spec' declarations.",
+        "--higher-order-size-limit",
+        "\tSet the maximum goal size of specialized versions created by",
+        "\t`--optimize-higher-order' and `--type-specialization'.",
+        "\tGoal size is measured as the number of calls, unifications",
+        "\tand branched goals.",
+        "--higher-order-arg-limit",
+        "\tSet the maximum size of higher-order arguments to",
+        "\tbe specialized by `--optimize-higher-order' and",
+        "\t`--type-specialization'.",
+        "--unneeded-code",
+        "\tRemove goals from computation paths where their outputs are",
+        "\tnot needed, provided the semantics options allow the deletion",
+        "\tor movement of the goal.",
+        "--unneeded-code-copy-limit",
+        "\tGives the maximum number of places to which a goal may be copied",
+        "\twhen removing it from computation paths on which its outputs are",
+        "\tnot needed. A value of zero forbids goal movement and allows",
+        "\tonly goal deletion; a value of one prevents any increase in the",
+        "\tsize of the code.",
+%       "--unneeded-code-debug",
+%       "\tPrint progress messages during the unneeded code elimination",
+%       "\tpasses.",
+%       "--unneeded-code-debug-pred-name <predname>",
+%       "\tPrint the definition of <predname> at the start of each pass",
+%       "\tof the unneeded code elimination algorithm.",
+        "--introduce-accumulators",
+        "\tAttempt to introduce accumulating variables into",
+        "\tprocedures, so as to make them tail recursive.",
+%       "--optimize-constructor-last-call-accumulator",
+%       "\tEnable the optimization via accumulators of ""last"" calls",
+%       "\tthat are followed by constructor application.",
+%       "--optimize-constructor-last-call-null",
+%       "\tWhen --optimize-constructor-last-call is enabled, put NULL in"
+%       "\tuninitialized fields (to prevent the garbage collector from",
+%       "\tlooking at and following a random bit pattern).",
+        "--optimize-constructor-last-call",
+        "\tEnable the optimization of ""last"" calls that are followed by",
+        "\tconstructor application.",
+        "--deforestation",
+        "\tEnable deforestation. Deforestation is a program",
+        "\ttransformation whose aim is to avoid the construction of",
+        "\tintermediate data structures and to avoid repeated traversals",
+        "\tover data structures within a conjunction.",
+        "--deforestation-depth-limit <limit>",
+        "\tSpecify a depth limit to prevent infinite loops in the",
+        "\tdeforestation algorithm.",
+        "\tA value of -1 specifies no depth limit. The default is 4.",
+        "--deforestation-vars-threshold <threshold>",
+        "\tSpecify a rough limit on the number of variables",
+        "\tin a procedure created by deforestation.",
+        "\tA value of -1 specifies no limit. The default is 200.",
+        "--deforestation-size-threshold <threshold>",
+        "\tSpecify a rough limit on the size of a goal",
+        "\tto be optimized by deforestation.",
+        "\tA value of -1 specifies no limit. The default is 15.",
+        "--analyse-exceptions",
+        "\tEnable exception analysis.  Identify those",
+        "\tprocedures that will not throw an exception.",
+        "\tSome optimizations can make use of this information.",
+% XXX The options controlling closure analysis are currently
+% commented out because it isn't useful.  It can be uncommented when
+% we actually have something that uses it.
+%       "--analyse-closures",
+%       "\tEnable closure analysis.  Try to identify the possible",
+%       "\tvalues that higher-order valued variables can take.",
+%       "\tSome optimizations can make use of this information.",
+        "--analyse-trail-usage",
+        "\tEnable trail usage analysis.  Identify those",
+        "\tprocedures that will not modify the trail.",
+        "\tThis information is used to reduce the overhead",
+        "\tof trailing.",
+% `--no-optimize-trail-usage' is a developer-only option.
+% It is intended for the benchmarking of trail usage optimization.
+% Otherwise, it should not be turned off as doing so interferes with
+% the results of the trail usage analysis.
+        % "--no-optimize-trail-usage",
+        % "\tDo not try and restrict trailing to those parts",
+        % "\tof the program that actually use it.",
+% `--no-optimize-region-ops' is a developer-only option.
+% It is intended for the benchmarking of region ops optimization.
+        % "--no-optimize-region-ops",
+        % "\tDo not try and restrict region operations to those parts",
+        % "\tof the program that actually use it.",
+        "--analyse-mm-tabling",
+        "\tIdentify those goals that do not call procedures",
+        "\tthat are evaluated using minimal model tabling.",
+        "\tThis information is used to reduce the overhead",
+        "\tof minimal model tabling."
+        % "--untuple",
+        % "\tExpand out procedure arguments when the argument type",
+        % "\tis a tuple or a type with exactly one functor.",
+        % "\tNote: this is almost always a pessimization.",
+        % "--tuple",
+        % "\tTry to find opportunities for procedures to pass some",
+        % "\targuments to each other as a tuple rather than as",
+        % "\tindividual arguments.",
+        % "\tNote: so far this has mostly a detrimental effect.",
+        % "--tuple-trace-counts-file",
+        % "\tSupply a trace counts summary file for the tupling",
+        % "\ttransformation. The summary should be made from a sample",
+        % "\trun of the program you are compiling, compiled without",
+        % "\toptimizations.",
+        % "--tuple-costs-ratio",
+        % "\tA value of 110 for this parameter means the tupling",
+        % "\ttransformation will transform a procedure if it thinks",
+        % "\tthat procedure would be 10% worse, on average, than",
+        % "\twhatever transformed version of the procedure it has in",
+        % "\tmind. The default is 100.",
+        % "--tuple-min-args",
+        % "\tThe minimum number of input arguments that the tupling",
+        % "\ttransformation will consider passing together as a",
+        % "\ttuple. This is mostly to speed up the compilation",
+        % "\tprocess by not pursuing (presumably) unfruitful searches.",
+% This is for measurements by implementors only.
+%       "--no-inline-par-builtins",
+%       "\tGenerate calls to the predicates of par_builtin.m, instead of",
+%       "\tbodily including their definitions as C code.",
+%       Actually, this is the default for now.
+% This is for measurements by implementors only.
+%       "--always-specialize-in-dep-par-conjs",
+%       "\tWhen the transformation for handling dependent parallel conjunctions",
+%       "\tadds waits and/or signals around a call, create a specialized",
+%       "\tversion of the called procedure, even if this is not profitable.",
+% '--region-analysis' is not documented because it is still experimental.
+%        "--region-analysis",
+%        "\tEnable the analysis for region-based memory management."
+    ]).
+
+:- pred options_help_hlds_llds_optimization(io::di, io::uo) is det.
+
+options_help_hlds_llds_optimization -->
+    io.write_string("\n    Medium-level (HLDS -> LLDS) optimizations:\n"),
+    write_tabbed_lines([
+        "--no-smart-indexing",
+        "\tGenerate switches as a simple if-then-else chains;",
+        "\tdisable string hashing and integer table-lookup indexing.",
+        "--dense-switch-req-density <percentage>",
+        "\tThe jump table generated for an atomic switch",
+        "\tmust have at least this percentage of full slots (default: 25).",
+        "--lookup-switch-req-density <percentage>",
+        "\tThe jump table generated for an atomic switch",
+        "\tin which all the outputs are constant terms",
+        "\tmust have at least this percentage of full slots (default: 25).",
+        "--dense-switch-size <n>",
+        "\tThe jump table generated for an atomic switch",
+        "\tmust have at least this many entries (default: 4).",
+        "--lookup-switch-size <n>",
+        "\tThe lookup table generated for an atomic switch",
+        "\tmust have at least this many entries (default: 4).",
+        "--string-hash-switch-size <n>",
+        "\tThe hash table generated for a string switch",
+        "\tmust have at least this many entries (default: 8).",
+        "--string-binary-switch-size <n>",
+        "\tThe binary search table generated for a string switch",
+        "\tmust have at least this many entries (default: 4).",
+        "--tag-switch-size <n>",
+        "\tThe number of alternatives in a tag switch",
+        "\tmust be at least this number (default: 3).",
+        "--try-switch-size <n>",
+        "\tThe number of alternatives in a try/retry chain switch",
+        "\tmust be at least this number (default: 3).",
+        "--binary-switch-size <n>",
+        "\tThe number of alternatives in a binary search switch",
+        "\tmust be at least this number (default: 4).",
+% These options are only for performance tests.
+%       "--switch-single-rec-base-first",
+%       "\tIn a switch with two arms, one a base case and one with a single",
+%       "\trecursive call, put the base case first.
+%       "--switch-multi-rec-base-first",
+%       "\tIn a switch with two arms, one a base case and one with multiple",
+%       "\trecursive calls, put the base case first.
+        "--no-static-ground-terms",
+        "\tDisable the optimization of constructing constant ground terms",
+        "\tat compile time and storing them as static constants.",
+        "\tNote that auxiliary data structures created by the compiler",
+        "\tfor purposes such as debugging will still be created as",
+        "\tstatic constants.",
+        "--no-use-atomic-cells",
+        "\tDon't use the atomic variants of the Boehm gc allocator calls,",
+        "\teven when this would otherwise be possible.",
+        "--no-middle-rec",
+        "\tDisable the middle recursion optimization.",
+        "--no-simple-neg",
+        "\tDon't generate simplified code for simple negations."
+%       "--no-allow-hijacks",
+%       "\tDo not generate code in which a procedure hijacks",
+%       "\ta nondet stack frame that possibly belongs to",
+%       "\tanother procedure invocation".
+    ]).
+
+:- pred options_help_llds_llds_optimization(io::di, io::uo) is det.
+
+options_help_llds_llds_optimization -->
+    io.write_string("\n    Low-level (LLDS -> LLDS) optimizations:\n"),
+    write_tabbed_lines([
+        "--no-common-data",
+        "\tDisable optimization of common data structures.",
+        "--no-common-layout-data",
+        "\tDisable optimization of common subsequences in layout structures.",
+        "--no-llds-optimize",
+        "\tDisable the low-level optimization passes.",
+        "--optimize-dead-procs",
+        "\tEnable dead predicate elimination.",
+        "--no-optimize-peep",
+        "\tDisable local peephole optimizations.",
+% This is useful for developers only, to test whether a gcc bug has been fixed.
+%       "--no-optimize-peep-mkword",
+%       "\tDisable peephole optimizations of words created by mkword.",
+        "--no-optimize-jumps",
+        "\tDisable elimination of jumps to jumps.",
+        "--no-optimize-fulljumps",
+        "\tDisable elimination of jumps to ordinary code.",
+        "--pessimize-tailcalls",
+        "\tDisable the optimization of tailcalls.",
+        "--checked-nondet-tailcalls",
+        "\tConvert nondet calls into tail calls whenever possible, even",
+        "\twhen this requires a runtime check. This option tries to",
+        "\tminimize stack consumption, possibly at the expense of speed.",
+        "--no-use-local-vars",
+        "\tDisable the transformation to use local variables in C code",
+        "\tblocks wherever possible.",
+% This is useful for developers only.
+%       "--standardize-labels",
+%       "\tStandardize internal labels in the generated code.",
+        "--no-optimize-labels",
+        "\tDisable elimination of dead labels and code.",
+        "--optimize-dups",
+        "\tEnable elimination of duplicate code within procedures.",
+        "--optimize-proc-dups",
+        "\tEnable elimination of duplicate procedures.",
+%%%     "--optimize-copyprop",
+%%%     "\tEnable the copy propagation optimization.",
+        "--no-optimize-frames",
+        "\tDisable stack frame optimizations.",
+        "--no-optimize-delay-slot",
+        "\tDisable branch delay slot optimizations.",
+        "--optimize-reassign",
+        "\tOptimize away assignments to locations that already hold",
+        "\tthe assigned value.",
+        "--optimize-repeat <n>",
+        "\tIterate most optimizations at most <n> times (default: 3).",
+        "--layout-compression-limit <n>",
+        "\tAttempt to compress the layout structures used by the debugger",
+        "\tonly as long as the arrays involved have at most <n> elements",
+        "\t(default: 4000)."
+    ]).
+
+:- pred options_help_mlds_mlds_optimization(io::di, io::uo) is det.
+
+options_help_mlds_mlds_optimization -->
+    io.write_string("\n    MLDS -> MLDS optimizations:\n"),
+    write_tabbed_lines([
+        "--no-mlds-optimize",
+        "\tDisable the MLDS->MLDS optimization passes.",
+        "--no-mlds-peephole",
+        "\tDo not perform peephole optimization of the MLDS.",
+        "--no-optimize-tailcalls",
+        "\tTreat tailcalls as ordinary calls, rather than optimizing",
+        "\tby turning self-tailcalls into loops.",
+        "--no-optimize-initializations",
+        "\tLeave initializations of local variables as",
+        "\tassignment statements, rather than converting such",
+        "\tassignment statements into initializers.",
+        "--eliminate-local-vars",
+        "\tEliminate local variables with known values, where possible,",
+        "\tby replacing occurrences of such variables with their values.",
+        "--no-generate-trail-ops-inline",
+        "\tDo not generate trailing operations inline,",
+        "\tbut instead insert calls to the versions of these operations",
+        "\tin the standard library."
+]).
+
+:- pred options_help_hlds_elds_optimization(io::di, io::uo) is det.
+
+options_help_hlds_elds_optimization -->
+    io.write_string("\n    HLDS -> ELDS optimizations:\n"),
+    write_tabbed_lines([
+        "--erlang-switch-on-strings-as-atoms",
+        "\tEnable a workaround for slow HiPE compilation of large string",
+        "\tswitches by converting the string to an atom at runtime and",
+        "\tswitching on atoms. Do not enable if the string switched on",
+        "\tcould be longer than 255 characters at runtime."
+    ]).
+
+:- pred options_help_output_optimization(io::di, io::uo) is det.
+
+options_help_output_optimization -->
+    io.write_string("\n    Output-level (LLDS -> C) optimizations:\n"),
+    write_tabbed_lines([
+        "--use-macro-for-redo-fail",
+        "\tEmit the fail or redo macro instead of a branch",
+        "\tto the fail or redo code in the runtime system.",
+        "\tThis produces slightly bigger but slightly faster code.",
+        "--no-emit-c-loops",
+        "\tUse only gotos, don't emit C loop constructs.",
+        "--procs-per-c-function <n>",
+        "\tPut the code for up to <n> Mercury",
+        "\tprocedures in a single C function.  The default",
+        "\tvalue of <n> is one.  Increasing <n> can produce",
+        "\tslightly more efficient code, but makes compilation slower.",
+        "--everything-in-one-c-function",
+        "\tThis option has the effect of putting the code for all",
+        "\tthe Mercury procedures in a single C function,",
+        "\twhich produces the most efficient code but tends to",
+        "\tseverely stress the C compiler on large modules.",
+        "--no-local-thread-engine-base",
+        "\tDon't copy the thread-local Mercury engine base address",
+        "\tinto local variables. This option only affects low-level",
+        "\tparallel grades not using the global register variables",
+        "\textension."
+    ]).
+
+:- pred options_help_target_code_compilation(io::di, io::uo) is det.
+
+options_help_target_code_compilation -->
+    io.write_string("\n    Target code compilation:\n"),
+    write_tabbed_lines([
+        "\tNote that if you are using Mmake, you need to pass these",
+        "\toptions to the target code compiler (e.g. `mgnuc')",
+        "\trather than to `mmc'.",
+
+        "--target-debug",
+        "\tEnable debugging of the generated target code.",
+        "\tIf the target language is C, this has the same effect as",
+        "\t`--c-debug' (see below).",
+        "\tIf the target language is IL or C#, this causes the compiler to",
+        "\tpass `/debug' to the IL assembler or C# compiler.)",
+
+        "--cc <compiler-name>",
+        "\tSpecify which C compiler to use.",
+
+        "--no-c-optimize",
+        "\tDon't enable the C compiler's optimizations.",
+
+        "--no-ansi-c",
+        "\tDon't specify to the C compiler that the ANSI dialect",
+        "\tof C should be used.  Use the full contents of system",
+        "\theaders, rather than the ANSI subset.",
+
+        "--c-debug",
+        "\tEnable debugging of the generated C code.",
+        "\t(This has the same effect as `--cflags ""-g""'",
+        "\tand disables stripping of the executable.)",
+
+        "--c-include-directory <dir>, --c-include-dir <dir>",
+        "\tAppend <dir> to the list of directories to be searched for",
+        "\tC header files.  Note that if you want to override",
+        "\tthis list, rather than append to it, then you can set the",
+        "\t`MERCURY_MC_ALL_C_INCL_DIRS' environment variable to a",
+        "\tsequence of `--c-include-directory' options.",
+
+        "--inline-alloc",
+        "\tInline calls to GC_malloc().",
+        "\tThis can improve performance a fair bit,",
+        "\tbut may significantly increase code size.",
+        "\tThis option has no effect if `--gc boehm'",
+        "\tis not set or if the C compiler is not GNU C.",
+
+        "--cflags <options>, --cflag <option>",
+        "\tSpecify options to be passed to the C compiler.",
+        "\t`--cflag' should be used for single words which need",
+        "\tto be quoted when passed to the shell.",
+
+        % The --gcc-flags, --gcc-flag, --clang-flags, --clang-flag,
+        % --msvc-flags and --msvc-flag options are an internal
+        % part of the implementation of mmc --make; they are deliberately
+        % not documented.
+
+        % The --cflags-for-regs, --cflags-for-gotos,
+        % --cflags-for-threads, --cflags-for-pic,
+        % --cflags-for-warnings, --cflags-for-ansi,
+        % --cflags-for-optimization, --c-flag-to-name-object-file,
+        % --object-file-extension, --pic-object-file-extension
+        % and --link-with-pic-object-file-extension
+        % options are reserved for use by the `mmc' script;
+        % they are deliberately not documented.
+
+        "--javac <javac>",
+        "--java-compiler <javac>",
+        "\tSpecify which Java compiler to use.  The default is `javac'.",
+
+        "--java-interpreter <java>",
+        "\tSpecify which Java interpreter to use.",
+        "\tThe default is `java'",
+
+        "--java-flags <options>, --java-flag <option>",
+        "\tSpecify options to be passed to the Java compiler.",
+        "\t`--java-flag' should be used for single words which need",
+        "\tto be quoted when passed to the shell.",
+
+        "--java-classpath <path>",
+        "\tSet the classpath for the Java compiler.",
+
+        "--java-object-file-extension <ext>",
+        "\tSpecify an extension for Java object (bytecode) files",
+        "\tBy default this is `.class'.",
+
+% IL options are commented out to reduce confusion.
+%       "--il-assembler <ilasm>",
+%       "\tSpecify the name of the .NET IL Assembler command.",
+%       "--ilasm-flags <options>, --ilasm-flag <options>",
+%       "\tSpecify options to be passed to the IL assembler.",
+%       "\t`--ilasm-flag' should be used for single words which need",
+%       "\tto be quoted when passed to the shell.",
+
+        "--csharp-compiler <csc>",
+        "\tSpecify the name of the C# Compiler.  The default is `csc'.",
+        "--csharp-flags <options>, --csharp-flag <option>",
+        "\tSpecify options to be passed to the C# compiler.",
+        "\t`--csharp-flag' should be used for single words which need",
+        "\tto be quoted when passed to the shell.",
+        "--cli-interpreter <prog>",
+        "\tSpecify the program that implements the Common Language",
+        "\tInfrastructure (CLI) execution environment, e.g. `mono'.",
+
+        "--erlang-compiler <erlc>",
+        "\tSpecify the name of the Erlang compiler.",
+        "\tThe default is `erlc'.",
+        "--erlang-interpreter <erl>",
+        "\tSpecify the name of the Erlang interpreter.",
+        "\tThe default is `erl'.",
+        "--erlang-flags <options>, --erlang-flag <option>",
+        "\tSpecify options to be passed to the Erlang compiler.",
+        "\t`--erlang-flag' should be used for single words which need",
+        "\tto be quoted when passed to the shell.",
+        "--erlang-include-directory <dir>, --erlang-include-dir <dir>",
+        "\tAppend <dir> to the list of directories to be searched for",
+        "\tErlang header files (.hrl).",
+        "--erlang-native-code",
+        "\tAdd `+native' to the list of flags passed to the",
+        "\tErlang compiler.  Cancelled out by `--no-erlang-native code'",
+        "\tso it is useful when you wish to enable native code",
+        "\tgeneration for all modules except for a select few.",
+        "--no-erlang-inhibit-trivial-warnings",
+        "\tDo not add `+nowarn_unused_vars +nowarn_unused_function' to the",
+        "\tlist of flags passed to the Erlang compiler."
+
+        % --erlang-object-file-extension is deliberately not documented.
+        % It is not fully implemented and not very useful.
+    ]).
+
+:- pred options_help_link(io::di, io::uo) is det.
+
+options_help_link -->
+    io.write_string("\nLink Options:\n"),
+    write_tabbed_lines([
+        "-o <filename>, --output-file <filename>",
+        "\tSpecify the name of the final executable.",
+        "\t(The default executable name is the same as the name",
+        "\tof the first module on the command line.)",
+        "\tThis option is ignored by `mmc --make'.",
+        "--ld-flags <options>, --ld-flag <option>",
+        "\tSpecify options to be passed to the linker command",
+        "\tinvoked by ml to link an executable.",
+        "\tUse `ml --print-link-command' to find out which",
+        "\tcommand is used.",
+        "\t`--ld-flag' should be used for single words which need",
+        "\tto be quoted when passed to the shell.",
+        "--ld-libflags <options>, --ld-libflag <option>",
+        "\tSpecify options to be passed to the linker command",
+        "\tinvoked by ml to link a shared library.",
+        "\tUse `ml --print-shared-lib-link-command' to find out",
+        "\twhich command is used.",
+        "\t`--ld-libflag' should be used for single words which need",
+        "\tto be quoted when passed to the shell.",
+        "-L <directory>, --library-directory <directory>",
+        "\tAppend <directory> to the list of directories in which",
+        "\tto search for libraries.",
+        "-R <directory>, --runtime-library-directory <directory>",
+        "\tAppend <directory> to the list of directories in which",
+        "\tto search for shared libraries at runtime.",
+        "--shlib-linker-install-name-path <directory>",
+        "\tSpecify the path where a shared library will be installed.",
+        "\tThis option is useful on systems where the runtime search",
+        "\tpath is obtained from the shared library and not via the",
+        "\t-R option above (such as Mac OS X).",
+        "-l <library>, --library <library>",
+        "\tLink with the specified library.",
+        "--link-object <object-file>",
+        "\tLink with the specified object file.",
+        "--search-lib-files-dir <directory>",
+        "--search-library-files-directory <directory>",
+        "\tSearch <directory> for Mercury library files have not yet been",
+        "\tinstalled.  Similar to adding <directory> using all of the",
+        "\t`--search-directory', `--intermod-directory',",
+        "\t`--library-directory', `--init-file-directory' and",
+        "\t`--c-include-directory' options.",
+        "--mld <directory>, --mercury-library-directory <directory>",
+        "\tAppend <directory> to the list of directories to",
+        "\tbe searched for Mercury libraries. This will add",
+        "\t`--search-directory', `--library-directory',",
+        "\t`--init-file-directory' and `--c-include-directory'",
+        "\toptions as needed.",
+        "--mercury-standard-library-directory <directory>",
+        "--mercury-stdlib-dir <directory>",
+        "\tSearch <directory> for the Mercury standard library.",
+        "\tImplies `--mercury-library-directory <directory>'",
+        "\tand `--mercury-configuration-directory <directory>'.",
+        "--no-mercury-standard-library-directory",
+        "--no-mercury-stdlib-dir",
+        "\tDon't use the Mercury standard library.",
+        "\tImplies `--no-mercury-configuration-directory'.",
+        "--ml <library>, --mercury-library <library>",
+        "\tLink with the specified Mercury library.",
+
+        "--linkage {shared|static}",
+        "\tSpecify whether to use shared or static linking for",
+        "\texecutables.  Shared libraries are always linked",
+        "\twith `--linkage shared'.",
+        "--mercury-linkage {shared|static}",
+        "\tSpecify whether to use shared or static linking when",
+        "\tlinking an executable with Mercury libraries.",
+        "\tShared libraries are always linked with",
+        "\t`--mercury-linkage shared'.",
+
+        "--init-file-directory <directory>",
+        "\tAppend <directory> to the list of directories to",
+        "\tbe searched for `.init' files by c2init.",
+        "--init-file <init-file>",
+        "\tAppend <init-file> to the list of `.init' files to",
+        "\tbe passed to c2init.",
+        "--trace-init-file <init-file>",
+        "\tAppend <init-file> to the list of `.init' files to",
+        "\tbe passed to c2init when tracing is enabled.",
+
+        "--no-strip",
+        "\tDon't strip executables.",
+        "--no-demangle",
+        "\tDon't pipe link errors through the Mercury demangler.",
+        "--no-main",
+        "\tDon't generate a C main() function.  The user's code must",
+        "\tprovide a main() function.",
+        "--no-allow-undefined",
+        "\tDo not allow undefined symbols in shared libraries.",
+        "--no-use-readline",
+        "\tDisable use of the readline library in the debugger.",
+        "--runtime-flags <flags>",
+        "\tSpecify flags to pass to the Mercury runtime.",
+        "--extra-initialization-functions, --extra-inits",
+        "\tSearch `.c' files for extra initialization functions.",
+        "\t(This may be necessary if the C files contain",
+        "\thand-coded C code with `INIT' comments, rather than",
+        "\tcontaining only C code that was automatically generated",
+        "\tby the Mercury compiler.)",
+
+        "--link-executable-command <command>",
+        "\tSpecify the command used to invoke the linker when linking",
+        "\tan executable.",
+        "--link-shared-lib-command <command>",
+        "\tSpecify the command used to invoke the linker when linking",
+        "\ta shared library.",
+
+        "--java-archive-command <command>",
+        "\tSpecify the command used to produce Java archive (JAR) files.",
+
+        "--framework <framework>",
+        "\tBuild and link against the specified framework.",
+        "\t(Mac OS X only.)",
+        "-F <directory>, --framework-directory <directory>",
+        "\tAppend the specified directory to the framework search path.",
+        "\t(Mac OS X only.)"
+
+        % The --shared-library-extension,
+        % --library-extension, --executable-file-extension
+        % --create-archive-command, --create-archive-command-flags
+        % --create-archive-command-output-flag, --ranlib-command,
+        % --ranlib-flags,
+        % --mkinit-command, --demangle-command, --filtercc-command,
+        % --trace-libs,
+        % --thread-libs, --shared-libs, --math-lib, --readline-libs,
+        % --hwloc-libs, --hwloc-static-libs,
+        % --linker-opt-separator,
+        % --linker-debug-flags, --shlib-linker-debug-flags,
+        % --linker-trace-flags, --shlib-linker-trace-flags,
+        % --linker-thread-flags, --shlib-linker-thread-flags,
+        % --linker-static-flags, --linker-strip-flag,
+        % --linker-link-lib-flag, --linker-link-lib-suffix,
+        % --shlib-linker-link-lib-flag, --shlib-linker-link-lib-suffix,
+        % --linker-path-flag, --linker-link-with-lib-flag,
+        % --linker-rpath-flag, --linker-rpath-separator,
+        % --shlib-linker-link-with-lib-flag,
+        % --shlib-linker-rpath-flag, --shlib-linker-rpath-separator,
+        % --linker-allow-undefined-flag and
+        % --linker-error-undefined-flag,
+        % --shlib-linker-install-name-flag,
+        % --shlib-linker-use-install-name,
+        % options are reserved for use by the `Mercury.config' file;
+        % they are deliberately not documented.
+    ]).
+
+:- pred options_help_build_system(io::di, io::uo) is det.
+
+options_help_build_system -->
+    io.write_string("\nBuild System Options:\n"),
+    write_tabbed_lines([
+        % `--invoked-by-mmc-make' is for internal use by the
+        % compiler. `mmc --make' passes it as the first argument
+        % when compiling a module.
+        "-m, --make",
+        "\tTreat the non-option arguments to `mmc' as files to",
+        "\tmake, rather than source files.  Create the specified",
+        "\tfiles, if they are not already up-to-date.",
+        "\tNote that this option also enables `--use-subdirs'.",
+        "-r, --rebuild",
+        "\tSame as `--make', but always rebuild the target files",
+        "\teven if they are up to date.",
+        "-k, --keep-going",
+        "\tWith `--make', keep going as far as",
+        "\tpossible even if an error is detected.",
+        "-j <n>, --jobs <n>",
+        "\tWith `--make', attempt to perform up to <n> jobs",
+        "\tconcurrently for some tasks.",
+
+        "--track-flags",
+        "\tWith `--make', keep track of the options used when compiling",
+        "\teach module.  If an option for a module is added or removed,",
+        "\t`mmc --make' will then know to recompile the module even if the",
+        "\ttimestamp on the file itself has not changed.  Warning,",
+        "\tverbosity and build system options are not tracked.",
+
+        "--pre-link-command <command>",
+        "\tSpecify a command to run before linking with `mmc --make'.",
+        "\tThis can be used to compile C source files which rely on",
+        "\theader files generated by the Mercury compiler.",
+        "\tThe command will be passed the names of all of the source",
+        "\tfiles in the program or library, with the source file",
+        "\tcontaining the main module given first.",
+
+        "--extra-init-command <command>",
+        "\tSpecify a command to produce extra entries in the `.init'",
+        "\tfile for a library.",
+        "\tThe command will be passed the names of all of the source",
+        "\tfiles in the program or library, with the source file",
+        "\tcontaining the main module given first.",
+
+        "--install-prefix <dir>",
+        "\tThe directory under which to install Mercury libraries.",
+
+        % --use-symlinks is only used by Mercury.config.
+        % It controls whether the build system should attempt
+        % to use symlinks.
+
+        "--install-command <command>",
+        "\tSpecify the command to use to install the files in",
+        "\tMercury libraries. The given command will be invoked as",
+        "\t`<command> <source> <target>' to install each file",
+        "\tin a Mercury library. The default command is `cp'.",
+        "--install-command-dir-option <option>",
+        "\tSpecify the flag to pass to the install command to install",
+        "\ta directory. The given command will be invoked as",
+        "\t`<command> <option> <source> <target>'",
+        "\tto install each directory. The default option is `-r'.",
+        "--libgrade <grade>",
+        "\tAdd <grade> to the list of compilation grades in",
+        "\twhich a library to be installed should be built.",
+        "--no-libgrade",
+        "\tClear the list of compilation grades in which a library",
+        "\tto be installed should be built.",
+        "--libgrades-include-component <component>",
+        "--libgrades-include <component>",
+        "\tRemove grades that do not contain the specified component from",
+        "\tthe set of library grades to be installed.",
+        "\t(This option does not work with Mmake, only `mmc --make'.)",
+        "--libgrades-exclude-component <component>",
+        "--libgrades-exclude <component>",
+        "\tRemove grades that contain the specified component from the",
+        "\tset of library grades to be installed.",
+        "\t(This option does not work with Mmake, only `mmc --make'.)",
+        "--lib-linkage {shared|static}",
+        "\tSpecify whether libraries should be installed for shared",
+        "\tor static linking.  This option can be specified multiple",
+        "\ttimes.  By default libraries will be installed for",
+        "\tboth shared and static linking.",
+        "--flags <file>",
+        "--flags-file <file>",
+        "\tTake options from the specified file, and handle them",
+        "\tas if they were specified on the command line.",
+        "--options-file <file>",
+        "\tAdd <file> to the list of options files to be processed.",
+        "\tIf <file> is `-', an options file will be read from the",
+        "\tstandard input.  By default the file `Mercury.options'",
+        "\tin the current directory will be read.",
+        "--options-search-directory <dir>",
+        "\tAdd <dir> to the list of directories to be searched for",
+        "\toptions files.",
+        "--mercury-configuration-directory <directory>",
+        "--mercury-config-dir <directory>",
+        "\tSearch <directory> for Mercury system's configuration files.",
+        "--config-file <file>",
+        "\tRead the Mercury compiler's configuration information",
+        "\tfrom <file>.  If the `--config-file' option is not set,",
+        "\ta default configuration will be used, unless",
+        "\t`--no-mercury-stdlib-dir' is passed to mmc.",
+        "\tThe configuration file is just an options file.",
+        "-I <dir>, --search-directory <dir>",
+        "\tAppend <dir> to the list of directories to be searched for",
+        "\timported modules.",
+        "--intermod-directory <dir>",
+        "\tAdd <dir> to the list of directories to be",
+        "\tsearched for `.opt' files.",
+        "--no-use-search-directories-for-intermod",
+        "\tDon't add arguments to `--search-directory' to the list",
+        "\tof directories to search for `.opt' files - use only the",
+        "\tdirectories given by `--intermod-directory'.",
+        "--use-subdirs",
+        "\tGenerate intermediate files in a `Mercury' subdirectory,",
+        "\trather than generating them in the current directory.",
+        "--use-grade-subdirs",
+        "\tGenerate intermediate files in a `Mercury' subdirectory,",
+        "\tlaid out so that multiple grades can be built simultaneously.",
+        "\tExecutables and libraries will be symlinked or copied into",
+        "\tthe current directory.",
+        "\t`--use-grade-subdirs' does not work with Mmake (it does",
+        "\twork with `mmc --make').",
+        "--no-libgrade-install-check",
+        "\tDo not check that libraries have been installed before",
+        "\tattempting to use them.  (This option is only meaningful with",
+        "\t`mmc --make'.)",
+        "--order-make-by-timestamp",
+        "\tMake `mmc --make' compile more recently modified source files",
+        "\tfirst.",
+        "--show-make-times",
+        "\tReport run times for commands executed by `mmc --make'.",
+        "--extra-library-header <file>, --extra-lib-header <file>",
+        "\tInstall the specified C header file with along with",
+        "\ta Mercury library.",
+        "\t(This option is only supported by `mmc --make'.)",
+        "--restricted-command-line",
+        "\tEnable this option if your shell doesn't support long command lines.",
+        "\tThis option uses temporary files to pass arguments to sub-commands.",
+        "\t(This option is only supported by `mmc --make'.)",
+        "--env-type <type>",
+        "\tSpecify the environment type in which the compiler and generated",
+        "\tprograms will be invoked.",
+        "\tThe <type> should be one of `posix', `cygwin', `msys', or `windows'.",
+        "\tThis option is equivalent to setting both --host-env-type and",
+        "\t--target-env-type to <type>.",
+        "--host-env-type <type>",
+        "\tSpecify the environment type in which the compiler will be",
+        "\tinvoked.",
+        "--target-env-type <type>",
+        "\tSpecify the environment type in which generated programs will be",
+        "\tinvoked."
+    ]).
+
+:- pred options_help_misc(io::di, io::uo) is det.
+
+options_help_misc -->
+    io.write_string("\nMiscellaneous Options:\n"),
+    write_tabbed_lines([
+        "--filenames-from-stdin",
+        "\tRead then compile a newline terminated module name or",
+        "\tfile name from the standard input. Repeat this until EOF",
+        "\tis reached. (This allows a program or user to interactively",
+        "\tcompile several modules without the overhead of process",
+        "\tcreation for each one.)",
+        "--typecheck-ambiguity-warn-limit <n>",
+        "\tSet the number of type assignments required to generate a",
+        "\twarning about highly ambiguous overloading to <n>.",
+        "--typecheck-ambiguity-error-limit <n>",
+        "\tSet the number of type assignments required to generate an error",
+        "\tabout excessively ambiguous overloading to <n>. If this limit is",
+        "\treached, the typechecker will not process the predicate or",
+        "\tfunction any further.",
+        "--version",
+        "\tDisplay the compiler version.",
+
+        % The `--fullarch' option is reserved for
+        % use by the `Mercury.config' file.
+
+        "--cross-compiling",
+        "\tDo not assume that the code being generated is for the",
+        "\tplatform the compiler is running on.",
+
+        % The `--local-module-id' option is used by `mmc --make'.
+        % The `--analysis-file-cache-dir' option is used by `mmc --make'.
+
+%        "--ignore-parallel-conjunctions",
+%        "\tReplace parallel conjunctions with plain ones, this is useful",
+%        "\tfor benchmarking.  Note that it does not affect implicit",
+%        "\tparallelism",
+
+        "--control-granularity",
+        "\tDon't try to generate more parallelism than the machine can",
+        "\thandle, which may be specified at runtime or detected",
+        "\tautomatically.",
+        "--distance-granularity <distance>",
+        "\tControl the granularity of parallel execution using the",
+        "\tspecified distance value.",
+        "--implicit-parallelism",
+        "\tIntroduce parallel conjunctions where it could be worthwhile",
+        "\t(implicit parallelism) using information generated by",
+        "\tmdprof_create_feedback.",
+        "\tThe profiling feedback file can be specified using the",
+        "\t--feedback file option.",
+
+        "--feedback-file",
+        "\tUse the specified profiling feedback file which may currently",
+        "\tonly be processed for implicit parallelism."
+    ]).
+
+:- pred write_tabbed_lines(list(string)::in, io::di, io::uo) is det.
+
+write_tabbed_lines([], !IO).
+write_tabbed_lines([Str | Strs], !IO) :-
+    io.write_char('\t', !IO),
+    io.write_string(Str, !IO),
+    io.write_char('\n', !IO),
+    write_tabbed_lines(Strs, !IO).
+
+%-----------------------------------------------------------------------------%
+:- end_module libs.options.
+%-----------------------------------------------------------------------------%
diff --git a/samples/Mercury/polymorphism.m b/samples/Mercury/polymorphism.m
new file mode 100644
index 00000000..96bc248f
--- /dev/null
+++ b/samples/Mercury/polymorphism.m
@@ -0,0 +1,4637 @@
+%-----------------------------------------------------------------------------%
+% vim: ft=mercury ts=4 sw=4 et
+%-----------------------------------------------------------------------------%
+% Copyright (C) 1995-2012 The University of Melbourne.
+% This file may only be copied under the terms of the GNU General
+% Public License - see the file COPYING in the Mercury distribution.
+%-----------------------------------------------------------------------------%
+%
+% File: polymorphism.m.
+% Main authors: fjh and zs.
+%
+% This module is a pass over the HLDS.
+% It does a syntactic transformation to implement polymorphism, including
+% typeclasses, by passing extra `type_info' and `typeclass_info' arguments.
+% These arguments are structures that contain, amongst other things,
+% higher order predicate terms for the polymorphic procedures or methods.
+%
+% See notes/type_class_transformation.html for a description of the
+% transformation and data structures used to implement type classes.
+%
+% XXX The way the code in this module handles existential type classes
+% and type class constraints is a bit ad hoc, in general; there are
+% definitely parts of this code (marked with XXXs below) that could
+% do with a rewrite to make it more consistent and hence more maintainable.
+%
+%-----------------------------------------------------------------------------%
+%
+% Transformation of polymorphic code:
+%
+% Every polymorphic predicate is transformed so that it takes one additional
+% argument for every type variable in the predicate's type declaration.
+% The argument gives information about the type, including higher order
+% predicate variables for each of the builtin polymorphic operations
+% (currently unify/2, compare/3).
+%
+%-----------------------------------------------------------------------------%
+%
+% Representation of type information:
+%
+% IMPORTANT: ANY CHANGES TO THE DOCUMENTATION HERE MUST BE REFLECTED BY
+% SIMILAR CHANGES TO THE #defines IN "runtime/mercury_type_info.h" AND
+% TO THE TYPE SPECIALIZATION CODE IN "compiler/higher_order.m".
+%
+% Type information is represented using one or two cells. The cell which
+% is always present is the type_ctor_info structure, whose structure is
+% defined in runtime/mercury_type_info.h. The other cell is the type_info
+% structure, laid out like this:
+%
+%   word 0      <pointer to the type_ctor_info structure>
+%   word 1+     <the type_infos for the type params, at least one>
+%
+%   (but see note below for how variable arity types differ)
+%
+%-----------------------------------------------------------------------------%
+%
+% Optimization of common case (zero arity types):
+%
+% The type_info structure itself is redundant if the type has no type
+% parameters (i.e. its arity is zero). Therefore if the arity is zero,
+% we pass the address of the type_ctor_info structure directly, instead of
+% wrapping it up in another cell. The runtime system will look at the first
+% field of the cell it is passed. If this field is zero, the cell is a
+% type_ctor_info structure for an arity zero type. If this field is not zero,
+% the cell is a new type_info structure, with the first field being the
+% pointer to the type_ctor_info structure.
+%
+%-----------------------------------------------------------------------------%
+%
+% Variable arity types:
+%
+% There is a slight variation on this for variable-arity type constructors, of
+% there are exactly three: pred, func and tuple. Typeinfos of these types
+% always have a pointer to the pred/0, func/0 or tuple/0 type_ctor_info,
+% regardless of their true arity, so we store the real arity in the type_info
+% as well.
+%
+%   word 0      <pointer to the arity 0 type_ctor_info structure>
+%   word 1      <arity of predicate>
+%   word 2+     <the type_infos for the type params, if any>
+%
+%-----------------------------------------------------------------------------%
+%
+% Sharing type_ctor_info structures:
+%
+% For compilation models that can put code addresses in static ground terms,
+% we can arrange to create one copy of the type_ctor_info structure statically,
+% avoiding the need to create other copies at runtime. For compilation models
+% that cannot put code addresses in static ground terms, there are a couple
+% of things we could do:
+%
+%   1. allocate all cells at runtime.
+%   2. use a shared static type_ctor_info, but initialize its code
+%      addresses during startup (that is, during the module
+%      initialization code).
+%
+% We use option 2.
+%
+%-----------------------------------------------------------------------------%
+%
+% Example of transformation:
+%
+% Take the following code as an example, ignoring the requirement for
+% superhomogeneous form for clarity:
+%
+%   :- pred p(T1).
+%   :- pred q(T2).
+%   :- pred r(T3).
+%
+%   p(X) :- q([X]), r(0).
+%
+% We add an extra argument for each type variable:
+%
+%   :- pred p(type_info(T1), T1).
+%   :- pred q(type_info(T2), T2).
+%   :- pred r(type_info(T3), T3).
+%
+% We transform the body of p to this:
+%
+%   p(TypeInfoT1, X) :-
+%       TypeCtorInfoT2 = type_ctor_info(list/1),
+%       TypeInfoT2 = type_info(TypeCtorInfoT2, TypeInfoT1),
+%       q(TypeInfoT2, [X]),
+%       TypeInfoT3 = type_ctor_info(int/0),
+%       r(TypeInfoT3, 0).
+%
+% Note that type_ctor_infos are actually generated as references to a
+% single shared type_ctor_info.
+%
+%-----------------------------------------------------------------------------%
+%-----------------------------------------------------------------------------%
+%
+% Transformation of code using existentially quantified types:
+%
+% The transformation for existential types is similar to the transformation
+% for universally quantified types, except that the type_infos and
+% type_class_infos have mode `out' rather than mode `in'.
+%
+% The argument passing convention is that the new parameters
+% introduced by this pass are placed in the following order:
+%
+%   First the type_infos for unconstrained universally quantified type
+%   variables, in the order that the type variables first appear in the
+%   argument types;
+%
+%   then the type_infos for unconstrained existentially quantified type
+%   variables, in the order that the type variables first appear in the
+%   argument types;
+%
+%   then the typeclass_infos for universally quantified constraints,
+%   in the order that the constraints appear in the class context;
+%
+%   then the typeclass_infos for existentially quantified constraints,
+%   in the order that the constraints appear in the class context;
+%
+%   and finally the original arguments of the predicate.
+%
+% Bear in mind that for the purposes of this (and most other) calculations,
+% the return parameter of a function counts as the _last_ argument.
+%
+% The convention for class method implementations is slightly different
+% to match the order that the type_infos and typeclass_infos are passed
+% in by do_call_class_method (in runtime/mercury_ho_call.c):
+%
+%   First the type_infos for the unconstrained type variables in the
+%   instance declaration, in the order that the type variables first appear
+%   in the instance arguments;
+%
+%   then the typeclass_infos for the class constraints on the instance
+%   declaration, in the order that the constraints appear in the declaration;
+%
+%   then the remainder of the arguments as above.
+%
+%-----------------------------------------------------------------------------%
+%-----------------------------------------------------------------------------%
+
+:- module check_hlds.polymorphism.
+:- interface.
+
+:- import_module hlds.
+:- import_module hlds.hlds_goal.
+:- import_module hlds.hlds_module.
+:- import_module hlds.hlds_pred.
+:- import_module hlds.hlds_rtti.
+:- import_module mdbcomp.
+:- import_module mdbcomp.prim_data.
+:- import_module parse_tree.
+:- import_module parse_tree.prog_data.
+
+:- import_module list.
+:- import_module maybe.
+:- import_module term.
+
+%-----------------------------------------------------------------------------%
+
+    % Run the polymorphism pass over the whole HLDS.
+    %
+:- pred polymorphism_process_module(module_info::in, module_info::out) is det.
+
+    % Run the polymorphism pass over a single pred. This is used to transform
+    % clauses introduced by unify_proc.m for complicated unification predicates
+    % for types for which unification predicates are generated lazily.
+    %
+    % This predicate should be used with caution. polymorphism.m expects that
+    % the argument types of called predicates have not been transformed yet.
+    % This predicate will not work correctly after the original pass of
+    % polymorphism has been run if the predicate to be processed calls
+    % any polymorphic predicates which require type_infos or typeclass_infos
+    % to be added to the argument list.
+    %
+:- pred polymorphism_process_generated_pred(pred_id::in,
+    module_info::in, module_info::out) is det.
+
+    % Add the type_info variables for a complicated unification to
+    % the appropriate fields in the unification and the goal_info.
+    %
+:- pred unification_typeinfos_rtti_varmaps(mer_type::in, rtti_varmaps::in,
+    unification::in, unification::out, hlds_goal_info::in, hlds_goal_info::out)
+    is det.
+
+    % Add the type_info variables for a new call goal. This predicate assumes
+    % that process_module has already been run so the called pred has already
+    % been processed.
+    %
+    % XXX This predicate does not yet handle calls whose arguments include
+    % existentially quantified types or type class constraints.
+    %
+:- pred polymorphism_process_new_call(pred_info::in, proc_info::in,
+    pred_id::in, proc_id::in, list(prog_var)::in, builtin_state::in,
+    maybe(call_unify_context)::in, sym_name::in, hlds_goal_info::in,
+    hlds_goal::out, poly_info::in, poly_info::out) is det.
+
+    % Given a list of types, create a list of variables to hold the type_info
+    % for those types, and create a list of goals to initialize those type_info
+    % variables to the appropriate type_info structures for the types.
+    % Update the varset and vartypes accordingly.
+    %
+:- pred polymorphism_make_type_info_vars(list(mer_type)::in, term.context::in,
+    list(prog_var)::out, list(hlds_goal)::out, poly_info::in, poly_info::out)
+    is det.
+
+    % Likewise, but for a single type.
+    %
+:- pred polymorphism_make_type_info_var(mer_type::in, term.context::in,
+    prog_var::out, list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+:- type int_or_var
+    --->    iov_int(int)
+    ;       iov_var(prog_var).
+
+    % gen_extract_type_info(ModuleInfo, TypeVar, Kind, TypeClassInfoVar,
+    %   IndexIntOrVar, Goals, TypeInfoVar, ...):
+    %
+    % Generate code to extract a type_info variable from a given slot of a
+    % typeclass_info variable, by calling type_info_from_typeclass_info from
+    % private_builtin. TypeVar is the type variable to which this type_info
+    % variable corresponds. Kind is the kind of the type variable.
+    % TypeClassInfoVar is the variable holding the type_class_info.
+    % Index specifies which slot it is. The procedure returns TypeInfoVar,
+    % which is a fresh variable holding the type_info, and Goals, which is
+    % the code generated to initialize TypeInfoVar.
+    %
+:- pred gen_extract_type_info(module_info::in, tvar::in, kind::in,
+    prog_var::in, int_or_var::in, list(hlds_goal)::out, prog_var::out,
+    prog_varset::in, prog_varset::out, vartypes::in, vartypes::out,
+    rtti_varmaps::in, rtti_varmaps::out) is det.
+
+:- type poly_info.
+
+    % Extract some fields from a pred_info and proc_info and use them to
+    % create a poly_info, for use by the polymorphism transformation.
+    %
+:- pred create_poly_info(module_info::in, pred_info::in,
+    proc_info::in, poly_info::out) is det.
+
+    % Update the fields in a pred_info and proc_info with
+    % the values in a poly_info.
+    %
+:- pred poly_info_extract(poly_info::in, pred_info::in, pred_info::out,
+    proc_info::in, proc_info::out, module_info::out) is det.
+
+    % Build the type describing the typeclass_info for the
+    % given prog_constraint.
+    %
+:- pred build_typeclass_info_type(prog_constraint::in, mer_type::out) is det.
+
+    % Check if a type is the `typeclass_info' type introduced by this pass.
+    %
+:- pred type_is_typeclass_info(mer_type::in) is semidet.
+
+    % Check if a type is either the `type_info' type or the
+    % `type_ctor_info' type introduced by this pass.
+    %
+:- pred type_is_type_info_or_ctor_type(mer_type::in) is semidet.
+
+    % Construct the type of the type_info for the given type.
+    %
+:- pred build_type_info_type(mer_type::in, mer_type::out) is det.
+
+    % Look up the pred_id and proc_id for a type specific
+    % unification/comparison/index/initialise predicate.
+    %
+:- pred get_special_proc(mer_type::in, special_pred_id::in,
+    module_info::in, sym_name::out, pred_id::out, proc_id::out) is semidet.
+:- pred get_special_proc_det(mer_type::in, special_pred_id::in,
+    module_info::in, sym_name::out, pred_id::out, proc_id::out) is det.
+
+    % Convert a higher order pred term to a lambda goal.
+    %
+:- pred convert_pred_to_lambda_goal(purity::in, lambda_eval_method::in,
+    prog_var::in, pred_id::in, proc_id::in, list(prog_var)::in,
+    list(mer_type)::in, unify_context::in, hlds_goal_info::in, context::in,
+    module_info::in, unify_rhs::out, prog_varset::in, prog_varset::out,
+    vartypes::in, vartypes::out) is det.
+
+    % fix_undetermined_mode_lambda_goal(ProcId, Functor0, Functor, ModuleInfo)
+    %
+    % This is called by mode checking when it figures out which mode that a
+    % lambda goal converted from a higher order pred term should call.
+    % Functor0 must have been produced by `convert_pred_to_lambda_goal'.
+    %
+:- pred fix_undetermined_mode_lambda_goal(proc_id::in,
+    unify_rhs::in(rhs_lambda_goal), unify_rhs::out(rhs_lambda_goal),
+    module_info::in) is det.
+
+    % init_type_info_var(Type, ArgVars, TypeInfoVar, TypeInfoGoal,
+    %   !VarSet, !VarTypes) :-
+    %
+    % Create the unification the constructs the second cell of a type_info
+    % for Type. ArgVars should contain the arguments of this unification.
+    %
+    % This unification WILL lead to the creation of cells on the heap
+    % at runtime.
+    %
+    % The first variable in ArgVars should be bound to the type_ctor_info
+    % for Type's principal type constructor. If that type constructor is
+    % variable arity, the next variable in ArgVars should be bound to an
+    % integer giving Type's actual arity. The remaining variables in
+    % ArgVars should be bound to the type_infos or type_ctor_infos giving
+    % Type's argument types.
+    %
+:- pred init_type_info_var(mer_type::in, list(prog_var)::in,
+    maybe(prog_var)::in, prog_var::out, hlds_goal::out,
+    prog_varset::in, prog_varset::out, vartypes::in, vartypes::out,
+    rtti_varmaps::in, rtti_varmaps::out) is det.
+
+    % init_const_type_ctor_info_var(Type, TypeCtor,
+    %   TypeCtorInfoVar, TypeCtorConsId, TypeCtorInfoGoal,
+    %   !VarSet, !VarTypes, !RttiVarMaps):
+    %
+    % Create the unification (returned as TypeCtorInfoGoal) that binds a
+    % new variable (returned as TypeCtorInfoVar) to the type_ctor_info
+    % representing TypeCtor. This will be the constant represented by
+    % TypeCtorConsId.
+    %
+    % This unification WILL NOT lead to the creation of a cell on the
+    % heap at runtime; it will cause TypeCtorInfoVar to refer to the
+    % statically allocated type_ctor_info cell for the type, allocated
+    % in the module that defines the type.
+    %
+    % We take Type as input for historical reasons: we record Type as
+    % the type whose type constructor TypeCtor is, in the type of
+    % TypeCtorInfoVar.
+    %
+:- pred init_const_type_ctor_info_var(mer_type::in, type_ctor::in,
+    prog_var::out, cons_id::out, hlds_goal::out,
+    prog_varset::in, prog_varset::out, vartypes::in, vartypes::out,
+    rtti_varmaps::in, rtti_varmaps::out) is det.
+
+:- type type_info_kind
+    --->    type_info
+    ;       type_ctor_info.
+
+:- pred new_type_info_var_raw(mer_type::in, type_info_kind::in,
+    prog_var::out, prog_varset::in, prog_varset::out,
+    vartypes::in, vartypes::out, rtti_varmaps::in, rtti_varmaps::out) is det.
+
+%-----------------------------------------------------------------------------%
+%-----------------------------------------------------------------------------%
+
+:- implementation.
+
+:- import_module check_hlds.clause_to_proc.
+:- import_module check_hlds.mode_util.
+:- import_module check_hlds.type_util.
+:- import_module hlds.from_ground_term_util.
+:- import_module hlds.const_struct.
+:- import_module hlds.goal_util.
+:- import_module hlds.hlds_args.
+:- import_module hlds.hlds_clauses.
+:- import_module hlds.hlds_code_util.
+:- import_module hlds.hlds_data.
+:- import_module hlds.instmap.
+:- import_module hlds.passes_aux.
+:- import_module hlds.pred_table.
+:- import_module hlds.quantification.
+:- import_module hlds.special_pred.
+:- import_module libs.
+:- import_module libs.globals.
+:- import_module libs.options.
+:- import_module mdbcomp.goal_path.
+:- import_module mdbcomp.prim_data.
+:- import_module mdbcomp.program_representation.
+:- import_module parse_tree.builtin_lib_types.
+:- import_module parse_tree.prog_mode.
+:- import_module parse_tree.prog_type.
+:- import_module parse_tree.prog_type_subst.
+:- import_module parse_tree.set_of_var.
+
+:- import_module assoc_list.
+:- import_module bool.
+:- import_module int.
+:- import_module io.
+:- import_module map.
+:- import_module pair.
+:- import_module require.
+:- import_module set.
+:- import_module solutions.
+:- import_module string.
+:- import_module term.
+:- import_module varset.
+
+%-----------------------------------------------------------------------------%
+%
+% This whole section just traverses the module structure.
+% We do two passes, the first to fix up the clauses_info and proc_infos
+% (and in fact everything except the pred_info argtypes), the second to fix up
+% the pred_info argtypes. The reason we need two passes is that the first pass
+% looks at the argtypes of the called predicates, and so we need to make
+% sure we don't muck them up before we've finished the first pass.
+
+polymorphism_process_module(!ModuleInfo) :-
+    module_info_get_preds(!.ModuleInfo, Preds0),
+    map.keys(Preds0, PredIds0),
+    list.foldl(maybe_polymorphism_process_pred, PredIds0, !ModuleInfo),
+    module_info_get_preds(!.ModuleInfo, Preds1),
+    map.keys(Preds1, PredIds1),
+    list.foldl(fixup_pred_polymorphism, PredIds1, !ModuleInfo),
+    expand_class_method_bodies(!ModuleInfo).
+
+:- pred maybe_polymorphism_process_pred(pred_id::in,
+    module_info::in, module_info::out) is det.
+
+maybe_polymorphism_process_pred(PredId, !ModuleInfo) :-
+    module_info_pred_info(!.ModuleInfo, PredId, PredInfo),
+    (
+        PredModule = pred_info_module(PredInfo),
+        PredName = pred_info_name(PredInfo),
+        PredArity = pred_info_orig_arity(PredInfo),
+        no_type_info_builtin(PredModule, PredName, PredArity)
+    ->
+        % Just copy the clauses to the proc_infos.
+        copy_module_clauses_to_procs([PredId], !ModuleInfo)
+    ;
+        polymorphism_process_pred_msg(PredId, !ModuleInfo)
+    ).
+
+%---------------------------------------------------------------------------%
+
+:- pred fixup_pred_polymorphism(pred_id::in,
+    module_info::in, module_info::out) is det.
+
+fixup_pred_polymorphism(PredId, !ModuleInfo) :-
+    % Recompute the arg types by finding the headvars and the var->type mapping
+    % (from the clauses_info) and applying the type mapping to the extra
+    % headvars to get the new arg types. Note that we are careful to only apply
+    % the mapping to the extra head vars, not to the originals, because
+    % otherwise we would stuff up the arg types for unification predicates for
+    % equivalence types.
+
+    module_info_get_preds(!.ModuleInfo, PredTable0),
+    map.lookup(PredTable0, PredId, PredInfo0),
+    pred_info_get_clauses_info(PredInfo0, ClausesInfo0),
+    clauses_info_get_vartypes(ClausesInfo0, VarTypes0),
+    clauses_info_get_headvars(ClausesInfo0, HeadVars),
+
+    pred_info_get_arg_types(PredInfo0, TypeVarSet, ExistQVars, ArgTypes0),
+    proc_arg_vector_partition_poly_args(HeadVars, ExtraHeadVarList,
+        OldHeadVarList),
+
+    lookup_var_types(VarTypes0, ExtraHeadVarList, ExtraArgTypes),
+    ArgTypes = ExtraArgTypes ++ ArgTypes0,
+    pred_info_set_arg_types(TypeVarSet, ExistQVars, ArgTypes,
+        PredInfo0, PredInfo1),
+
+    % If the clauses bind some existentially quantified type variables,
+    % introduce exists_casts goals for affected head variables, including
+    % the new type_info and typeclass_info arguments. Make sure the types
+    % of the internal versions of type_infos for those type variables in the
+    % variable types map are as specific as possible.
+
+    (
+        ExistQVars = [_ | _],
+        % This can fail for unification procedures of equivalence types.
+        lookup_var_types(VarTypes0, OldHeadVarList, OldHeadVarTypes),
+        type_list_subsumes(ArgTypes0, OldHeadVarTypes, Subn),
+        \+ map.is_empty(Subn)
+    ->
+        pred_info_set_existq_tvar_binding(Subn, PredInfo1, PredInfo2),
+        polymorphism_introduce_exists_casts_pred(!.ModuleInfo, PredInfo2,
+            PredInfo)
+    ;
+        PredInfo = PredInfo1
+    ),
+
+    map.det_update(PredId, PredInfo, PredTable0, PredTable),
+    module_info_set_preds(PredTable, !ModuleInfo).
+
+:- pred polymorphism_introduce_exists_casts_pred(module_info::in,
+    pred_info::in, pred_info::out) is det.
+
+polymorphism_introduce_exists_casts_pred(ModuleInfo, !PredInfo) :-
+    pred_info_get_procedures(!.PredInfo, Procs0),
+    map.map_values_only(
+        (pred(!.ProcInfo::in, !:ProcInfo::out) is det :-
+            % Add the extra goals to each procedure.
+            introduce_exists_casts_proc(ModuleInfo, !.PredInfo, !ProcInfo)
+        ), Procs0, Procs),
+    pred_info_set_procedures(Procs, !PredInfo).
+
+%---------------------------------------------------------------------------%
+
+:- pred polymorphism_process_pred_msg(pred_id::in,
+    module_info::in, module_info::out) is det.
+
+polymorphism_process_pred_msg(PredId, !ModuleInfo) :-
+    % Since polymorphism transforms not just the procedures defined
+    % in the module being compiled, but also all the procedures in
+    % all the imported modules, this message can be printed A LOT,
+    % even though it is almost never of interest.
+    % That is why we enable it only when requested.
+
+    trace [compiletime(flag("poly_msgs")), io(!IO)] (
+        write_pred_progress_message("% Transforming polymorphism for ",
+            PredId, !.ModuleInfo, !IO)
+    ),
+    polymorphism_process_pred(PredId, !ModuleInfo).
+
+polymorphism_process_generated_pred(PredId, !ModuleInfo) :-
+    polymorphism_process_pred(PredId, !ModuleInfo),
+    fixup_pred_polymorphism(PredId, !ModuleInfo).
+
+:- mutable(selected_pred, bool, no, ground, [untrailed]).
+:- mutable(level, int, 0, ground, [untrailed]).
+
+:- pred polymorphism_process_pred(pred_id::in,
+    module_info::in, module_info::out) is det.
+
+polymorphism_process_pred(PredId, !ModuleInfo) :-
+    trace [compiletime(flag("debug_poly_caches"))] (
+        promise_pure (
+            % Replace 99999 with the id of the predicate you want to debug.
+            ( pred_id_to_int(PredId) = 15 ->
+                impure set_selected_pred(yes)
+            ;
+                true
+            )
+        )
+    ),
+
+    module_info_pred_info(!.ModuleInfo, PredId, PredInfo0),
+
+    % Run the polymorphism pass over the clauses_info, updating the headvars,
+    % goals, varsets, types, etc., and computing some information in the
+    % poly_info.
+
+    pred_info_get_clauses_info(PredInfo0, ClausesInfo0),
+    polymorphism_process_clause_info(!.ModuleInfo, PredInfo0,
+        ClausesInfo0, ClausesInfo, Info, ExtraArgModes),
+    poly_info_get_module_info(Info, !:ModuleInfo),
+    poly_info_get_const_struct_db(Info, ConstStructDb),
+    module_info_set_const_struct_db(ConstStructDb, !ModuleInfo),
+
+    poly_info_get_typevarset(Info, TypeVarSet),
+    pred_info_set_typevarset(TypeVarSet, PredInfo0, PredInfo1),
+    pred_info_set_clauses_info(ClausesInfo, PredInfo1, PredInfo2),
+
+    % Do a pass over the proc_infos, copying the relevant information
+    % from the clauses_info and the poly_info, and updating all the argmodes
+    % with modes for the extra arguments.
+
+    ProcIds = pred_info_procids(PredInfo2),
+    pred_info_get_procedures(PredInfo2, Procs0),
+    list.foldl(polymorphism_process_proc_in_table(PredInfo2, ClausesInfo,
+        ExtraArgModes), ProcIds, Procs0, Procs),
+    pred_info_set_procedures(Procs, PredInfo2, PredInfo),
+
+    trace [compiletime(flag("debug_poly_caches"))] (
+        promise_pure (
+            impure set_selected_pred(no)
+        )
+    ),
+
+    module_info_set_pred_info(PredId, PredInfo, !ModuleInfo).
+
+:- pred polymorphism_process_clause_info(module_info::in, pred_info::in,
+    clauses_info::in, clauses_info::out, poly_info::out,
+    poly_arg_vector(mer_mode)::out) is det.
+
+polymorphism_process_clause_info(ModuleInfo0, PredInfo0, !ClausesInfo, !:Info,
+        ExtraArgModes) :-
+    init_poly_info(ModuleInfo0, PredInfo0, !.ClausesInfo, !:Info),
+    !.ClausesInfo = clauses_info(_VarSet, ExplicitVarTypes, _TVarNameMap,
+        _VarTypes, HeadVars0, ClausesRep0, ItemNumbers,
+        _RttiVarMaps, HaveForeignClauses),
+
+    setup_headvars(PredInfo0, HeadVars0, HeadVars,
+        ExtraArgModes, UnconstrainedTVars,
+        ExtraTypeInfoHeadVars, ExistTypeClassInfoHeadVars, !Info),
+
+    get_clause_list(ClausesRep0, Clauses0),
+    list.map_foldl(
+        polymorphism_process_clause(PredInfo0, HeadVars0, HeadVars,
+            UnconstrainedTVars, ExtraTypeInfoHeadVars,
+            ExistTypeClassInfoHeadVars),
+        Clauses0, Clauses, !Info),
+
+    % Set the new values of the fields in clauses_info.
+    poly_info_get_varset(!.Info, VarSet),
+    poly_info_get_var_types(!.Info, VarTypes),
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps),
+    set_clause_list(Clauses, ClausesRep),
+    map.init(TVarNameMap), % This is only used while adding the clauses.
+    !:ClausesInfo = clauses_info(VarSet, ExplicitVarTypes, TVarNameMap,
+        VarTypes, HeadVars, ClausesRep, ItemNumbers,
+        RttiVarMaps, HaveForeignClauses).
+
+:- pred polymorphism_process_clause(pred_info::in,
+    proc_arg_vector(prog_var)::in, proc_arg_vector(prog_var)::in,
+    list(tvar)::in, list(prog_var)::in, list(prog_var)::in,
+    clause::in, clause::out, poly_info::in, poly_info::out) is det.
+
+polymorphism_process_clause(PredInfo0, OldHeadVars, NewHeadVars,
+        UnconstrainedTVars, ExtraTypeInfoHeadVars,
+        ExistTypeClassInfoHeadVars, !Clause, !Info) :-
+    ( pred_info_is_imported(PredInfo0) ->
+        true
+    ;
+        Goal0 = !.Clause ^ clause_body,
+
+        % Process any polymorphic calls inside the goal.
+        empty_cache_maps(!Info),
+        poly_info_set_num_reuses(0, !Info),
+        polymorphism_process_goal(Goal0, Goal1, !Info),
+
+        % Generate code to construct the typeclass_infos and type_infos
+        % for existentially quantified type vars.
+        produce_existq_tvars(PredInfo0, OldHeadVars,
+            UnconstrainedTVars, ExtraTypeInfoHeadVars,
+            ExistTypeClassInfoHeadVars, Goal1, Goal2, !Info),
+
+        pred_info_get_exist_quant_tvars(PredInfo0, ExistQVars),
+        fixup_quantification(NewHeadVars, ExistQVars, Goal2, Goal, !Info),
+        !Clause ^ clause_body := Goal
+    ).
+
+:- pred polymorphism_process_proc_in_table(pred_info::in, clauses_info::in,
+    poly_arg_vector(mer_mode)::in, proc_id::in,
+    proc_table::in, proc_table::out) is det.
+
+polymorphism_process_proc_in_table(PredInfo, ClausesInfo, ExtraArgModes,
+        ProcId, !ProcTable) :-
+    map.lookup(!.ProcTable, ProcId, ProcInfo0),
+    polymorphism_process_proc(PredInfo, ClausesInfo, ExtraArgModes, ProcId,
+        ProcInfo0, ProcInfo),
+    map.det_update(ProcId, ProcInfo, !ProcTable).
+
+:- pred polymorphism_process_proc(pred_info::in, clauses_info::in,
+    poly_arg_vector(mer_mode)::in, proc_id::in, proc_info::in, proc_info::out)
+    is det.
+
+polymorphism_process_proc(PredInfo, ClausesInfo, ExtraArgModes, ProcId,
+        !ProcInfo) :-
+    % Copy all the information from the clauses_info into the proc_info.
+    (
+        (
+            pred_info_is_imported(PredInfo)
+        ;
+            pred_info_is_pseudo_imported(PredInfo),
+            hlds_pred.in_in_unification_proc_id(ProcId)
+        )
+    ->
+        % We need to set these fields in the proc_info here, because some parts
+        % of the compiler (e.g. unused_args.m) depend on these fields being
+        % valid even for imported procedures.
+
+        % XXX ARGVEC - when the proc_info uses the proc_arg_vector just
+        % pass the headvar vector directly to the proc_info.
+        clauses_info_get_headvars(ClausesInfo, HeadVars),
+        HeadVarList = proc_arg_vector_to_list(HeadVars),
+        clauses_info_get_rtti_varmaps(ClausesInfo, RttiVarMaps),
+        clauses_info_get_varset(ClausesInfo, VarSet),
+        clauses_info_get_vartypes(ClausesInfo, VarTypes),
+        proc_info_set_headvars(HeadVarList, !ProcInfo),
+        proc_info_set_rtti_varmaps(RttiVarMaps, !ProcInfo),
+        proc_info_set_varset(VarSet, !ProcInfo),
+        proc_info_set_vartypes(VarTypes, !ProcInfo)
+    ;
+        copy_clauses_to_proc(ProcId, ClausesInfo, !ProcInfo)
+    ),
+
+    % Add the ExtraArgModes to the proc_info argmodes.
+    % XXX ARGVEC - revisit this when the proc_info uses proc_arg_vectors.
+    proc_info_get_argmodes(!.ProcInfo, ArgModes1),
+    ExtraArgModesList = poly_arg_vector_to_list(ExtraArgModes),
+    ArgModes = ExtraArgModesList ++ ArgModes1,
+    proc_info_set_argmodes(ArgModes, !ProcInfo).
+
+    % XXX document me
+    %
+    % XXX the following code ought to be rewritten to handle
+    % existential/universal type_infos and type_class_infos
+    % in a more consistent manner.
+    %
+:- pred setup_headvars(pred_info::in, proc_arg_vector(prog_var)::in,
+    proc_arg_vector(prog_var)::out, poly_arg_vector(mer_mode)::out,
+    list(tvar)::out, list(prog_var)::out, list(prog_var)::out,
+    poly_info::in, poly_info::out) is det.
+
+setup_headvars(PredInfo, !HeadVars, ExtraArgModes,
+        UnconstrainedTVars, ExtraHeadTypeInfoVars,
+        ExistHeadTypeClassInfoVars, !Info) :-
+    pred_info_get_origin(PredInfo, Origin),
+    ExtraArgModes0 = poly_arg_vector_init : poly_arg_vector(mer_mode),
+    (
+        Origin = origin_instance_method(_, InstanceMethodConstraints),
+        setup_headvars_instance_method(PredInfo,
+            InstanceMethodConstraints, !HeadVars,
+            UnconstrainedTVars, ExtraHeadTypeInfoVars,
+            ExistHeadTypeClassInfoVars,
+            ExtraArgModes0, ExtraArgModes, !Info)
+    ;
+        ( Origin = origin_special_pred(_)
+        ; Origin = origin_transformed(_, _, _)
+        ; Origin = origin_created(_)
+        ; Origin = origin_assertion(_, _)
+        ; Origin = origin_lambda(_, _, _)
+        ; Origin = origin_user(_)
+        ),
+        pred_info_get_class_context(PredInfo, ClassContext),
+        InstanceTVars = [],
+        InstanceUnconstrainedTVars = [],
+        InstanceUnconstrainedTypeInfoVars = [],
+        setup_headvars_2(PredInfo, ClassContext, InstanceTVars,
+            InstanceUnconstrainedTVars, InstanceUnconstrainedTypeInfoVars,
+            !HeadVars, UnconstrainedTVars,
+            ExtraHeadTypeInfoVars, ExistHeadTypeClassInfoVars,
+            ExtraArgModes0, ExtraArgModes, !Info)
+    ).
+
+    % For class method implementations, do_call_class_method takes the
+    % type_infos and typeclass_infos from the typeclass_info and pastes them
+    % onto the front of the argument list. We need to match that order here.
+    %
+:- pred setup_headvars_instance_method(pred_info::in,
+    instance_method_constraints::in,
+    proc_arg_vector(prog_var)::in, proc_arg_vector(prog_var)::out,
+    list(tvar)::out, list(prog_var)::out, list(prog_var)::out,
+    poly_arg_vector(mer_mode)::in, poly_arg_vector(mer_mode)::out,
+    poly_info::in, poly_info::out) is det.
+
+setup_headvars_instance_method(PredInfo,
+        InstanceMethodConstraints, !HeadVars,
+        UnconstrainedTVars, ExtraHeadTypeInfoVars,
+        ExistHeadTypeClassInfoVars, !ExtraArgModes, !Info) :-
+
+    InstanceMethodConstraints = instance_method_constraints(_,
+        InstanceTypes, InstanceConstraints, ClassContext),
+
+    type_vars_list(InstanceTypes, InstanceTVars),
+    get_unconstrained_tvars(InstanceTVars, InstanceConstraints,
+        UnconstrainedInstanceTVars),
+    pred_info_get_arg_types(PredInfo, ArgTypeVarSet, _, _),
+    make_head_vars(UnconstrainedInstanceTVars,
+        ArgTypeVarSet, UnconstrainedInstanceTypeInfoVars, !Info),
+    make_typeclass_info_head_vars(do_record_type_info_locns,
+        InstanceConstraints, InstanceHeadTypeClassInfoVars, !Info),
+
+    proc_arg_vector_set_instance_type_infos(UnconstrainedInstanceTypeInfoVars,
+        !HeadVars),
+    proc_arg_vector_set_instance_typeclass_infos(InstanceHeadTypeClassInfoVars,
+         !HeadVars),
+
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+    list.foldl(rtti_reuse_typeclass_info_var,
+        InstanceHeadTypeClassInfoVars, RttiVarMaps0, RttiVarMaps),
+    poly_info_set_rtti_varmaps(RttiVarMaps, !Info),
+
+    in_mode(InMode),
+    list.duplicate(list.length(UnconstrainedInstanceTypeInfoVars),
+        InMode, UnconstrainedInstanceTypeInfoModes),
+    list.duplicate(list.length(InstanceHeadTypeClassInfoVars),
+        InMode, InstanceHeadTypeClassInfoModes),
+    poly_arg_vector_set_instance_type_infos(
+        UnconstrainedInstanceTypeInfoModes, !ExtraArgModes),
+    poly_arg_vector_set_instance_typeclass_infos(
+        InstanceHeadTypeClassInfoModes, !ExtraArgModes),
+
+    setup_headvars_2(PredInfo, ClassContext,
+        InstanceTVars,
+        UnconstrainedInstanceTVars, UnconstrainedInstanceTypeInfoVars,
+        !HeadVars,
+        UnconstrainedTVars, ExtraHeadTypeInfoVars,
+        ExistHeadTypeClassInfoVars, !ExtraArgModes, !Info).
+
+:- pred setup_headvars_2(pred_info::in, prog_constraints::in,
+    list(tvar)::in, list(tvar)::in, list(prog_var)::in,
+    proc_arg_vector(prog_var)::in, proc_arg_vector(prog_var)::out,
+    list(tvar)::out, list(prog_var)::out, list(prog_var)::out,
+    poly_arg_vector(mer_mode)::in, poly_arg_vector(mer_mode)::out,
+    poly_info::in, poly_info::out) is det.
+
+setup_headvars_2(PredInfo, ClassContext,
+        InstanceTVars, UnconstrainedInstanceTVars,
+        UnconstrainedInstanceTypeInfoVars, HeadVars0,
+        HeadVars, AllUnconstrainedTVars,
+        AllExtraHeadTypeInfoVars, ExistHeadTypeClassInfoVars,
+        !ExtraArgModes, !Info) :-
+
+    % Grab the appropriate fields from the pred_info.
+    pred_info_get_arg_types(PredInfo, ArgTypeVarSet, ExistQVars, ArgTypes),
+
+    % Insert extra head variables to hold the address of the type_infos
+    % and typeclass_infos. We insert one variable for each unconstrained
+    % type variable (for the type_info) and one variable for each
+    % constraint (for the typeclass_info).
+    %
+    % The order of these variables is important, and must match the order
+    % specified at the top of this file.
+
+    % Make a fresh variable for each class constraint, returning a list of
+    % variables that appear in the constraints, along with the location of
+    % the type infos for them. For the existential constraints, we want
+    % the rtti_varmaps to contain the internal view of the types (that is,
+    % with type variables bound) so we may need to look up the actual
+    % constraints in the constraint map. For the universal constraints there
+    % is no distinction between the internal views and the external view, so
+    % we just use the constraints from the class context.
+    ClassContext = constraints(UnivConstraints, ExistConstraints),
+    prog_type.constraint_list_get_tvars(UnivConstraints,
+        UnivConstrainedTVars),
+    prog_type.constraint_list_get_tvars(ExistConstraints,
+        ExistConstrainedTVars),
+    poly_info_get_constraint_map(!.Info, ConstraintMap),
+    get_improved_exists_head_constraints(ConstraintMap, ExistConstraints,
+        ActualExistConstraints),
+    (
+        pred_info_get_markers(PredInfo, PredMarkers),
+        check_marker(PredMarkers, marker_class_method)
+    ->
+        % For class methods we record the type_info_locns even for the
+        % existential constraints. It is easier to do it here than when we
+        % are expanding class method bodies, and we know there won't be any
+        % references to the type_info after the instance method call so
+        % recording them now won't be a problem.
+        RecordExistQLocns = do_record_type_info_locns
+    ;
+        RecordExistQLocns = do_not_record_type_info_locns
+    ),
+    make_typeclass_info_head_vars(RecordExistQLocns, ActualExistConstraints,
+        ExistHeadTypeClassInfoVars, !Info),
+    make_typeclass_info_head_vars(do_record_type_info_locns, UnivConstraints,
+        UnivHeadTypeClassInfoVars, !Info),
+
+    type_vars_list(ArgTypes, HeadTypeVars),
+    list.delete_elems(HeadTypeVars, UnivConstrainedTVars,
+        UnconstrainedTVars0),
+    list.delete_elems(UnconstrainedTVars0, ExistConstrainedTVars,
+        UnconstrainedTVars1),
+
+    % Typeinfos for the instance tvars have already been introduced by
+    % setup_headvars_instance_method.
+    list.delete_elems(UnconstrainedTVars1, InstanceTVars,
+        UnconstrainedTVars2),
+    list.remove_dups(UnconstrainedTVars2, UnconstrainedTVars),
+
+    (
+        ExistQVars = [],
+        % Optimize common case.
+        UnconstrainedUnivTVars = UnconstrainedTVars,
+        UnconstrainedExistTVars = [],
+        ExistHeadTypeInfoVars = []
+    ;
+        ExistQVars = [_ | _],
+        list.delete_elems(UnconstrainedTVars, ExistQVars,
+            UnconstrainedUnivTVars),
+        list.delete_elems(UnconstrainedTVars, UnconstrainedUnivTVars,
+            UnconstrainedExistTVars),
+        make_head_vars(UnconstrainedExistTVars, ArgTypeVarSet,
+            ExistHeadTypeInfoVars, !Info)
+    ),
+
+    make_head_vars(UnconstrainedUnivTVars, ArgTypeVarSet,
+        UnivHeadTypeInfoVars, !Info),
+    ExtraHeadTypeInfoVars = UnivHeadTypeInfoVars ++ ExistHeadTypeInfoVars,
+
+    AllExtraHeadTypeInfoVars = UnconstrainedInstanceTypeInfoVars
+        ++ ExtraHeadTypeInfoVars,
+    list.condense([UnconstrainedInstanceTVars, UnconstrainedUnivTVars,
+        UnconstrainedExistTVars], AllUnconstrainedTVars),
+
+    proc_arg_vector_set_univ_type_infos(UnivHeadTypeInfoVars,
+        HeadVars0, HeadVars1),
+    proc_arg_vector_set_exist_type_infos(ExistHeadTypeInfoVars,
+        HeadVars1, HeadVars2),
+    proc_arg_vector_set_univ_typeclass_infos(UnivHeadTypeClassInfoVars,
+        HeadVars2, HeadVars3),
+    proc_arg_vector_set_exist_typeclass_infos(ExistHeadTypeClassInfoVars,
+        HeadVars3, HeadVars),
+
+    % Figure out the modes of the introduced type_info and typeclass_info
+    % arguments.
+
+    in_mode(In),
+    out_mode(Out),
+    list.length(UnconstrainedUnivTVars, NumUnconstrainedUnivTVars),
+    list.length(UnconstrainedExistTVars, NumUnconstrainedExistTVars),
+    list.length(UnivHeadTypeClassInfoVars, NumUnivClassInfoVars),
+    list.length(ExistHeadTypeClassInfoVars, NumExistClassInfoVars),
+    list.duplicate(NumUnconstrainedUnivTVars, In, UnivTypeInfoModes),
+    list.duplicate(NumUnconstrainedExistTVars, Out, ExistTypeInfoModes),
+    list.duplicate(NumUnivClassInfoVars, In, UnivTypeClassInfoModes),
+    list.duplicate(NumExistClassInfoVars, Out, ExistTypeClassInfoModes),
+    poly_arg_vector_set_univ_type_infos(UnivTypeInfoModes, !ExtraArgModes),
+    poly_arg_vector_set_exist_type_infos(ExistTypeInfoModes, !ExtraArgModes),
+    poly_arg_vector_set_univ_typeclass_infos(UnivTypeClassInfoModes,
+        !ExtraArgModes),
+    poly_arg_vector_set_exist_typeclass_infos(ExistTypeClassInfoModes,
+        !ExtraArgModes),
+
+    % Add the locations of the typeinfos for unconstrained, universally
+    % quantified type variables to the initial rtti_varmaps. Also add the
+    % locations of typeclass_infos.
+    %
+    some [!RttiVarMaps] (
+        poly_info_get_rtti_varmaps(!.Info, !:RttiVarMaps),
+
+        ToLocn = (pred(TheVar::in, TheLocn::out) is det :-
+            TheLocn = type_info(TheVar)),
+
+        list.map(ToLocn, UnivHeadTypeInfoVars, UnivTypeLocns),
+        list.foldl_corresponding(rtti_det_insert_type_info_locn,
+            UnconstrainedUnivTVars, UnivTypeLocns, !RttiVarMaps),
+
+        list.map(ToLocn, ExistHeadTypeInfoVars, ExistTypeLocns),
+        list.foldl_corresponding(rtti_det_insert_type_info_locn,
+            UnconstrainedExistTVars, ExistTypeLocns, !RttiVarMaps),
+
+        list.map(ToLocn, UnconstrainedInstanceTypeInfoVars,
+            UnconstrainedInstanceTypeLocns),
+        list.foldl_corresponding(rtti_det_insert_type_info_locn,
+            UnconstrainedInstanceTVars,
+            UnconstrainedInstanceTypeLocns, !RttiVarMaps),
+
+        list.foldl(rtti_reuse_typeclass_info_var,
+            UnivHeadTypeClassInfoVars, !RttiVarMaps),
+
+        poly_info_set_rtti_varmaps(!.RttiVarMaps, !Info)
+    ).
+
+    % Generate code to produce the values of type_infos and typeclass_infos
+    % for existentially quantified type variables in the head.
+    %
+    % XXX The following code ought to be rewritten to handle
+    % existential/universal type_infos and type_class_infos
+    % in a more consistent manner.
+    %
+:- pred produce_existq_tvars(pred_info::in, proc_arg_vector(prog_var)::in,
+    list(tvar)::in, list(prog_var)::in, list(prog_var)::in,
+    hlds_goal::in, hlds_goal::out, poly_info::in, poly_info::out) is det.
+
+produce_existq_tvars(PredInfo, HeadVars, UnconstrainedTVars,
+        TypeInfoHeadVars, ExistTypeClassInfoHeadVars, Goal0, Goal, !Info) :-
+    poly_info_get_var_types(!.Info, VarTypes0),
+    poly_info_get_constraint_map(!.Info, ConstraintMap),
+    pred_info_get_arg_types(PredInfo, ArgTypes),
+    pred_info_get_tvar_kinds(PredInfo, KindMap),
+    pred_info_get_class_context(PredInfo, PredClassContext),
+
+    % Generate code to produce values for any existentially quantified
+    % typeclass_info variables in the head.
+
+    PredExistConstraints = PredClassContext ^ exist_constraints,
+    get_improved_exists_head_constraints(ConstraintMap, PredExistConstraints,
+        ActualExistConstraints),
+    ExistQVarsForCall = [],
+    Goal0 = hlds_goal(_, GoalInfo),
+    Context = goal_info_get_context(GoalInfo),
+    make_typeclass_info_vars(ActualExistConstraints, ExistQVarsForCall,
+        Context, ExistTypeClassVarsMCAs, ExtraTypeClassGoals, !Info),
+    assoc_list.keys(ExistTypeClassVarsMCAs, ExistTypeClassVars),
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+    list.foldl(rtti_reuse_typeclass_info_var, ExistTypeClassVars,
+        RttiVarMaps0, RttiVarMaps),
+    poly_info_set_rtti_varmaps(RttiVarMaps, !Info),
+    assign_var_list(ExistTypeClassInfoHeadVars,
+        ExistTypeClassVars, ExtraTypeClassUnifyGoals),
+
+    % Figure out the bindings for any unconstrained existentially quantified
+    % type variables in the head.
+
+    ( vartypes_is_empty(VarTypes0) ->
+        % This can happen for compiler generated procedures.
+        map.init(PredToActualTypeSubst)
+    ;
+        HeadVarList = proc_arg_vector_to_list(HeadVars),
+        lookup_var_types(VarTypes0, HeadVarList, ActualArgTypes),
+        type_list_subsumes(ArgTypes, ActualArgTypes, ArgTypeSubst)
+    ->
+        PredToActualTypeSubst = ArgTypeSubst
+    ;
+        % This can happen for unification procedures of equivalence types
+        % error("polymorphism.m: type_list_subsumes failed")
+        map.init(PredToActualTypeSubst)
+    ),
+
+    % Apply the type bindings to the unconstrained type variables to give
+    % the actual types, and then generate code to initialize the type_infos
+    % for those types.
+
+    apply_subst_to_tvar_list(KindMap, PredToActualTypeSubst,
+        UnconstrainedTVars, ActualTypes),
+    polymorphism_do_make_type_info_vars(ActualTypes, Context,
+        TypeInfoVarsMCAs, ExtraTypeInfoGoals, !Info),
+    assoc_list.keys(TypeInfoVarsMCAs, TypeInfoVars),
+    assign_var_list(TypeInfoHeadVars, TypeInfoVars, ExtraTypeInfoUnifyGoals),
+    list.condense([[Goal0 | ExtraTypeClassGoals], ExtraTypeClassUnifyGoals,
+        ExtraTypeInfoGoals, ExtraTypeInfoUnifyGoals], GoalList),
+    conj_list_to_goal(GoalList, GoalInfo, Goal).
+
+:- pred assign_var_list(list(prog_var)::in, list(prog_var)::in,
+    list(hlds_goal)::out) is det.
+
+assign_var_list([], [_ | _], _) :-
+    unexpected($module, $pred, "length mismatch").
+assign_var_list([_ | _], [], _) :-
+    unexpected($module, $pred, "length mismatch").
+assign_var_list([], [], []).
+assign_var_list([Var1 | Vars1], [Var2 | Vars2], [Goal | Goals]) :-
+    assign_var(Var1, Var2, Goal),
+    assign_var_list(Vars1, Vars2, Goals).
+
+:- pred assign_var(prog_var::in, prog_var::in, hlds_goal::out) is det.
+
+assign_var(Var1, Var2, Goal) :-
+    ( Var1 = Var2 ->
+        Goal = true_goal
+    ;
+        term.context_init(Context),
+        create_pure_atomic_complicated_unification(Var1, rhs_var(Var2),
+            Context, umc_explicit, [], Goal)
+    ).
+
+:- pred get_improved_exists_head_constraints(constraint_map::in,
+    list(prog_constraint)::in, list(prog_constraint)::out) is det.
+
+get_improved_exists_head_constraints(ConstraintMap,  ExistConstraints,
+        ActualExistConstraints) :-
+    list.length(ExistConstraints, NumExistConstraints),
+    (
+        search_hlds_constraint_list(ConstraintMap, unproven, goal_id(0),
+            NumExistConstraints, ActualExistConstraints0)
+    ->
+        ActualExistConstraints = ActualExistConstraints0
+    ;
+        % Some predicates, for example typeclass methods and predicates for
+        % which we inferred the type, don't have constraint map entries for
+        % the head constraints. In these cases we can just use the external
+        % constraints, since there can't be any difference between them and
+        % the internal ones.
+        ActualExistConstraints = ExistConstraints
+    ).
+
+%-----------------------------------------------------------------------------%
+
+:- pred polymorphism_process_goal(hlds_goal::in, hlds_goal::out,
+    poly_info::in, poly_info::out) is det.
+
+polymorphism_process_goal(Goal0, Goal, !Info) :-
+    Goal0 = hlds_goal(GoalExpr0, GoalInfo0),
+    (
+        % We don't need to add type_infos for higher order calls, since the
+        % type_infos are added when the closures are constructed, not when
+        % they are called.
+        GoalExpr0 = generic_call(_, _, _, _, _),
+        Goal = Goal0
+    ;
+        GoalExpr0 = plain_call(PredId, _, ArgVars0, _, _, _),
+        polymorphism_process_call(PredId, ArgVars0, GoalInfo0, GoalInfo,
+            ExtraVars, ExtraGoals, !Info),
+        ArgVars = ExtraVars ++ ArgVars0,
+        CallExpr = GoalExpr0 ^ call_args := ArgVars,
+        Call = hlds_goal(CallExpr, GoalInfo),
+        GoalList = ExtraGoals ++ [Call],
+        conj_list_to_goal(GoalList, GoalInfo0, Goal)
+    ;
+        GoalExpr0 = call_foreign_proc(_, PredId, _, _, _, _, _),
+        poly_info_get_module_info(!.Info, ModuleInfo),
+        module_info_pred_info(ModuleInfo, PredId, PredInfo),
+        PredModule = pred_info_module(PredInfo),
+        PredName = pred_info_name(PredInfo),
+        PredArity = pred_info_orig_arity(PredInfo),
+
+        ( no_type_info_builtin(PredModule, PredName, PredArity) ->
+            Goal = Goal0
+        ;
+            polymorphism_process_foreign_proc(PredInfo, GoalExpr0, GoalInfo0,
+                Goal, !Info)
+        )
+    ;
+        GoalExpr0 = unify(XVar, Y, Mode, Unification, UnifyContext),
+        polymorphism_process_unify(XVar, Y, Mode, Unification, UnifyContext,
+            GoalInfo0, Goal, !Info)
+    ;
+        % The rest of the cases just process goals recursively.
+        (
+            GoalExpr0 = conj(ConjType, Goals0),
+            (
+                ConjType = plain_conj,
+                polymorphism_process_plain_conj(Goals0, Goals, !Info)
+            ;
+                ConjType = parallel_conj,
+                get_cache_maps_snapshot("parconj", InitialSnapshot, !Info),
+                polymorphism_process_par_conj(Goals0, Goals, InitialSnapshot,
+                    !Info)
+                % Unlike with disjunctions, we do not have to reset to
+                % InitialSnapshot.
+            ),
+            GoalExpr = conj(ConjType, Goals)
+        ;
+            GoalExpr0 = disj(Goals0),
+            get_cache_maps_snapshot("disj", InitialSnapshot, !Info),
+            polymorphism_process_disj(Goals0, Goals, InitialSnapshot, !Info),
+            set_cache_maps_snapshot("after disj", InitialSnapshot, !Info),
+            GoalExpr = disj(Goals)
+        ;
+            GoalExpr0 = if_then_else(Vars, Cond0, Then0, Else0),
+            get_cache_maps_snapshot("ite", InitialSnapshot, !Info),
+            polymorphism_process_goal(Cond0, Cond, !Info),
+            % If we allowed a type_info created inside Cond to be reused
+            % in Then, then we are adding an output variable to Cond.
+            % If Cond scope had no outputs to begin with, this would change
+            % its determinism.
+            set_cache_maps_snapshot("before then", InitialSnapshot, !Info),
+            polymorphism_process_goal(Then0, Then, !Info),
+            set_cache_maps_snapshot("before else", InitialSnapshot, !Info),
+            polymorphism_process_goal(Else0, Else, !Info),
+            set_cache_maps_snapshot("after ite", InitialSnapshot, !Info),
+            GoalExpr = if_then_else(Vars, Cond, Then, Else)
+        ;
+            GoalExpr0 = negation(SubGoal0),
+            get_cache_maps_snapshot("neg", InitialSnapshot, !Info),
+            polymorphism_process_goal(SubGoal0, SubGoal, !Info),
+            set_cache_maps_snapshot("after neg", InitialSnapshot, !Info),
+            GoalExpr = negation(SubGoal)
+        ;
+            GoalExpr0 = switch(Var, CanFail, Cases0),
+            get_cache_maps_snapshot("switch", InitialSnapshot, !Info),
+            polymorphism_process_cases(Cases0, Cases, InitialSnapshot, !Info),
+            set_cache_maps_snapshot("after switch", InitialSnapshot, !Info),
+            GoalExpr = switch(Var, CanFail, Cases)
+        ;
+            GoalExpr0 = scope(Reason0, SubGoal0),
+            (
+                Reason0 = from_ground_term(TermVar, Kind),
+                (
+                    Kind = from_ground_term_initial,
+                    polymorphism_process_from_ground_term_initial(TermVar,
+                        GoalInfo0, SubGoal0, GoalExpr, !Info)
+                ;
+                    ( Kind = from_ground_term_construct
+                    ; Kind = from_ground_term_deconstruct
+                    ; Kind = from_ground_term_other
+                    ),
+                    polymorphism_process_goal(SubGoal0, SubGoal, !Info),
+                    GoalExpr = scope(Reason0, SubGoal)
+                )
+            ;
+                Reason0 = promise_solutions(_, _),
+                % polymorphism_process_goal may cause SubGoal to bind
+                % variables (such as PolyConst variables) that SubGoal0 does
+                % not bind. If we allowed such variables to be reused outside
+                % the scope, that would change the set of variables that the
+                % promise would have to cover. We cannot expect and do not want
+                % user level programmers making promises about variables added
+                % by the compiler.
+                get_cache_maps_snapshot("promise_solns", InitialSnapshot,
+                    !Info),
+                polymorphism_process_goal(SubGoal0, SubGoal, !Info),
+                set_cache_maps_snapshot("after promise_solns", InitialSnapshot,
+                    !Info),
+                GoalExpr = scope(Reason0, SubGoal)
+            ;
+                ( Reason0 = promise_purity(_)
+                ; Reason0 = require_detism(_)
+                ; Reason0 = require_complete_switch(_)
+                ; Reason0 = commit(_)
+                ; Reason0 = barrier(_)
+                ; Reason0 = loop_control(_, _, _)
+                ),
+                polymorphism_process_goal(SubGoal0, SubGoal, !Info),
+                GoalExpr = scope(Reason0, SubGoal)
+            ;
+                Reason0 = exist_quant(_),
+                % If we allowed a type_info created inside SubGoal to be reused
+                % outside GoalExpr, then we are adding an output variable to
+                % the scope. If the scope had no outputs to begin with, this
+                % would change the determinism of the scope.
+                %
+                % However, using a type_info from before the scope in SubGoal
+                % is perfectly ok.
+
+                get_cache_maps_snapshot("exists", InitialSnapshot, !Info),
+                polymorphism_process_goal(SubGoal0, SubGoal, !Info),
+                set_cache_maps_snapshot("after exists", InitialSnapshot,
+                    !Info),
+                GoalExpr = scope(Reason0, SubGoal)
+            ;
+                Reason0 = trace_goal(_, _, _, _, _),
+                % Trace goal scopes will be deleted after semantic analysis
+                % if their compile-time condition turns out to be false.
+                % If we let later code use type_infos introduced inside the
+                % scope, the deletion of the scope would leave those variables
+                % undefined.
+                %
+                % We *could* evaluate the compile-time condition here to know
+                % whether the deletion will happen or not, but doing so would
+                % require breaching the separation between compiler passes.
+
+                get_cache_maps_snapshot("trace", InitialSnapshot, !Info),
+                polymorphism_process_goal(SubGoal0, SubGoal, !Info),
+                set_cache_maps_snapshot("after trace", InitialSnapshot, !Info),
+                GoalExpr = scope(Reason0, SubGoal)
+            )
+        ),
+        Goal = hlds_goal(GoalExpr, GoalInfo0)
+    ;
+        GoalExpr0 = shorthand(ShortHand0),
+        (
+            ShortHand0 = atomic_goal(GoalType, Outer, Inner, Vars,
+                MainGoal0, OrElseGoals0, OrElseInners),
+            get_cache_maps_snapshot("atomic", InitialSnapshot, !Info),
+            polymorphism_process_goal(MainGoal0, MainGoal, !Info),
+            polymorphism_process_disj(OrElseGoals0, OrElseGoals,
+                InitialSnapshot, !Info),
+            set_cache_maps_snapshot("after atomic", InitialSnapshot, !Info),
+            ShortHand = atomic_goal(GoalType, Outer, Inner, Vars,
+                MainGoal, OrElseGoals, OrElseInners)
+        ;
+            ShortHand0 = try_goal(MaybeIO, ResultVar, SubGoal0),
+            % We don't let the code inside and outside the try goal share
+            % type_info variables for the same reason as with lambda
+            % expressions; because those pieces of code will end up
+            % in different procedures. However, for try goals, this is true
+            % even for the first and second conjuncts.
+            get_cache_maps_snapshot("try", InitialSnapshot, !Info),
+            (
+                SubGoal0 = hlds_goal(SubGoalExpr0, SubGoalInfo),
+                SubGoalExpr0 = conj(plain_conj, Conjuncts0),
+                Conjuncts0 = [ConjunctA0, ConjunctB0]
+            ->
+                empty_cache_maps(!Info),
+                polymorphism_process_goal(ConjunctA0, ConjunctA, !Info),
+                empty_cache_maps(!Info),
+                polymorphism_process_goal(ConjunctB0, ConjunctB, !Info),
+
+                Conjuncts = [ConjunctA, ConjunctB],
+                SubGoalExpr = conj(plain_conj, Conjuncts),
+                SubGoal = hlds_goal(SubGoalExpr, SubGoalInfo)
+            ;
+                unexpected($module, $pred, "malformed try goal")
+            ),
+            set_cache_maps_snapshot("after try", InitialSnapshot, !Info),
+            ShortHand = try_goal(MaybeIO, ResultVar, SubGoal)
+        ;
+            ShortHand0 = bi_implication(_, _),
+            unexpected($module, $pred, "bi_implication")
+        ),
+        GoalExpr = shorthand(ShortHand),
+        Goal = hlds_goal(GoalExpr, GoalInfo0)
+    ).
+
+%-----------------------------------------------------------------------------%
+
+:- pred polymorphism_process_from_ground_term_initial(prog_var::in,
+    hlds_goal_info::in, hlds_goal::in, hlds_goal_expr::out,
+    poly_info::in, poly_info::out) is det.
+
+polymorphism_process_from_ground_term_initial(TermVar, GoalInfo0, SubGoal0,
+        GoalExpr, !Info) :-
+    SubGoal0 = hlds_goal(SubGoalExpr0, SubGoalInfo0),
+    ( SubGoalExpr0 = conj(plain_conj, SubGoals0Prime) ->
+        SubGoals0 = SubGoals0Prime
+    ;
+        unexpected($module, $pred,
+            "from_ground_term_initial goal is not plain conj")
+    ),
+    polymorphism_process_fgti_goals(SubGoals0, [], RevMarkedSubGoals,
+        fgt_invariants_kept, InvariantsStatus, !Info),
+    (
+        InvariantsStatus = fgt_invariants_kept,
+        Reason = from_ground_term(TermVar, from_ground_term_initial),
+        GoalExpr = scope(Reason, SubGoal0)
+    ;
+        InvariantsStatus = fgt_invariants_broken,
+        introduce_partial_fgt_scopes(GoalInfo0, SubGoalInfo0,
+            RevMarkedSubGoals, deconstruct_top_down, SubGoal),
+        % Delete the scope wrapper around SubGoal0.
+        SubGoal = hlds_goal(GoalExpr, _)
+    ).
+
+:- pred polymorphism_process_fgti_goals(list(hlds_goal)::in,
+    list(fgt_marked_goal)::in, list(fgt_marked_goal)::out,
+    fgt_invariants_status::in, fgt_invariants_status::out,
+    poly_info::in, poly_info::out) is det.
+
+polymorphism_process_fgti_goals([], !RevMarkedGoals, !InvariantsStatus, !Info).
+polymorphism_process_fgti_goals([Goal0 | Goals0], !RevMarkedGoals,
+        !InvariantsStatus, !Info) :-
+    % This is used only if polymorphism_fgt_sanity_tests is enabled.
+    OldInfo = !.Info,
+    Goal0 = hlds_goal(GoalExpr0, GoalInfo0),
+    (
+        GoalExpr0 = unify(XVarPrime, Y, ModePrime, UnificationPrime,
+            UnifyContextPrime),
+        Y = rhs_functor(ConsIdPrime, _, YVarsPrime)
+    ->
+        XVar = XVarPrime,
+        Mode = ModePrime,
+        Unification = UnificationPrime,
+        UnifyContext = UnifyContextPrime,
+        ConsId = ConsIdPrime,
+        YVars = YVarsPrime
+    ;
+        unexpected($module, $pred,
+            "from_ground_term_initial conjunct is not functor unify")
+    ),
+    polymorphism_process_unify_functor(XVar, ConsId, YVars, Mode,
+        Unification, UnifyContext, GoalInfo0, Goal, Changed, !Info),
+    (
+        Changed = no,
+        trace [compiletime(flag("polymorphism_fgt_sanity_tests"))] (
+            poly_info_get_varset(OldInfo, VarSetBefore),
+            MaxVarBefore = varset.max_var(VarSetBefore),
+            poly_info_get_num_reuses(OldInfo, NumReusesBefore),
+
+            poly_info_get_varset(!.Info, VarSetAfter),
+            MaxVarAfter = varset.max_var(VarSetAfter),
+            poly_info_get_num_reuses(!.Info, NumReusesAfter),
+
+            expect(unify(MaxVarBefore, MaxVarAfter), $module, $pred,
+                "MaxVarBefore != MaxVarAfter"),
+            expect(unify(NumReusesBefore, NumReusesAfter), $module, $pred,
+                "NumReusesBefore != NumReusesAfter"),
+            expect(unify(Goal0, Goal), $module, $pred,
+                "Goal0 != Goal")
+        ),
+        MarkedGoal = fgt_kept_goal(Goal0, XVar, YVars)
+    ;
+        Changed = yes,
+        MarkedGoal = fgt_broken_goal(Goal, XVar, YVars),
+        !:InvariantsStatus = fgt_invariants_broken
+    ),
+    !:RevMarkedGoals = [MarkedGoal | !.RevMarkedGoals],
+    polymorphism_process_fgti_goals(Goals0, !RevMarkedGoals,
+        !InvariantsStatus, !Info).
+
+%-----------------------------------------------------------------------------%
+
+:- pred polymorphism_process_unify(prog_var::in, unify_rhs::in,
+    unify_mode::in, unification::in, unify_context::in, hlds_goal_info::in,
+    hlds_goal::out, poly_info::in, poly_info::out) is det.
+
+polymorphism_process_unify(XVar, Y, Mode, Unification0, UnifyContext,
+        GoalInfo0, Goal, !Info) :-
+    (
+        Y = rhs_var(_YVar),
+
+        % Var-var unifications (simple_test, assign, or complicated_unify)
+        % are basically left unchanged. Complicated unifications will
+        % eventually get converted into calls, but that is done later on,
+        % by simplify.m, not now. At this point we just need to figure out
+        % which type_info/typeclass_info variables the unification might need,
+        % and insert them in the nonlocals. We have to do that for all var-var
+        % unifications, because at this point we haven't done mode analysis so
+        % we don't know which ones will become complicated_unifies.
+        % Note that we also store the type_info/typeclass_info variables
+        % in a field in the unification, which quantification.m uses when
+        % requantifying things.
+
+        poly_info_get_var_types(!.Info, VarTypes),
+        lookup_var_type(VarTypes, XVar, Type),
+        unification_typeinfos(Type, Unification0, Unification,
+            GoalInfo0, GoalInfo, _Changed, !Info),
+        Goal = hlds_goal(unify(XVar, Y, Mode, Unification, UnifyContext),
+            GoalInfo)
+    ;
+        Y = rhs_functor(ConsId, _, Args),
+        polymorphism_process_unify_functor(XVar, ConsId, Args, Mode,
+            Unification0, UnifyContext, GoalInfo0, Goal, _Changed, !Info)
+    ;
+        Y = rhs_lambda_goal(Purity, Groundness, PredOrFunc, EvalMethod,
+            ArgVars0, LambdaVars, Modes, Det, LambdaGoal0),
+
+        % For lambda expressions, we must recursively traverse the lambda goal.
+        % Any type_info variables needed by the lambda goal are created in the
+        % lambda goal (not imported from the outside), and any type_info
+        % variables created by the lambda goal are not available outside.
+        % This is because, after lambda expansion, the code inside and outside
+        % the lambda goal will end up in different procedures.
+
+        get_cache_maps_snapshot("lambda", InitialSnapshot, !Info),
+        empty_cache_maps(!Info),
+        polymorphism_process_goal(LambdaGoal0, LambdaGoal1, !Info),
+        set_cache_maps_snapshot("after lambda", InitialSnapshot, !Info),
+
+        % Currently we don't allow lambda goals to be existentially typed.
+        ExistQVars = [],
+        fixup_lambda_quantification(ArgVars0, LambdaVars, ExistQVars,
+            LambdaGoal1, LambdaGoal, NonLocalTypeInfos, !Info),
+        set_of_var.to_sorted_list(NonLocalTypeInfos, NonLocalTypeInfosList),
+        ArgVars = NonLocalTypeInfosList ++ ArgVars0,
+        Y1 = rhs_lambda_goal(Purity, Groundness, PredOrFunc, EvalMethod,
+            ArgVars, LambdaVars, Modes, Det, LambdaGoal),
+        NonLocals0 = goal_info_get_nonlocals(GoalInfo0),
+        set_of_var.union(NonLocals0, NonLocalTypeInfos, NonLocals),
+        goal_info_set_nonlocals(NonLocals, GoalInfo0, GoalInfo),
+
+        % Complicated (in-in) argument unifications are impossible for lambda
+        % expressions, so we don't need to worry about adding the type_infos
+        % that would be required for such unifications.
+        Goal = hlds_goal(unify(XVar, Y1, Mode, Unification0, UnifyContext),
+            GoalInfo)
+    ).
+
+:- pred unification_typeinfos(mer_type::in,
+    unification::in, unification::out, hlds_goal_info::in, hlds_goal_info::out,
+    bool::out, poly_info::in, poly_info::out) is det.
+
+unification_typeinfos(Type, !Unification, !GoalInfo, Changed, !Info) :-
+    % Compute the type_info/type_class_info variables that would be used
+    % if this unification ends up being a complicated_unify.
+    type_vars(Type, TypeVars),
+    (
+        TypeVars = [],
+        Changed = no
+    ;
+        TypeVars = [_ | _],
+        list.map_foldl(get_type_info_locn, TypeVars, TypeInfoLocns, !Info),
+        add_unification_typeinfos(TypeInfoLocns, !Unification, !GoalInfo),
+        Changed = yes
+    ).
+
+unification_typeinfos_rtti_varmaps(Type, RttiVarMaps, !Unification,
+        !GoalInfo) :-
+    % This variant is for use by modecheck_unify.m. During mode checking,
+    % all the type_infos should appear in the type_info_varmap.
+
+    % Compute the type_info/type_class_info variables that would be used
+    % if this unification ends up being a complicated_unify.
+    type_vars(Type, TypeVars),
+    list.map(rtti_lookup_type_info_locn(RttiVarMaps), TypeVars,
+        TypeInfoLocns),
+    add_unification_typeinfos(TypeInfoLocns, !Unification, !GoalInfo).
+
+:- pred add_unification_typeinfos(list(type_info_locn)::in,
+    unification::in, unification::out,
+    hlds_goal_info::in, hlds_goal_info::out) is det.
+
+add_unification_typeinfos(TypeInfoLocns, !Unification, !GoalInfo) :-
+    list.map(type_info_locn_var, TypeInfoLocns, TypeInfoVars0),
+    list.remove_dups(TypeInfoVars0, TypeInfoVars),
+
+    % Insert the TypeInfoVars into the nonlocals field of the goal_info
+    % for the unification goal.
+    NonLocals0 = goal_info_get_nonlocals(!.GoalInfo),
+    set_of_var.insert_list(TypeInfoVars, NonLocals0, NonLocals),
+    goal_info_set_nonlocals(NonLocals, !GoalInfo),
+
+    % Also save those type_info vars into a field in the complicated_unify,
+    % so that quantification.m can recompute variable scopes properly.
+    % This field is also used by modecheck_unify.m -- for complicated
+    % unifications, it checks that all these variables are ground.
+    (
+        !.Unification = complicated_unify(Modes, CanFail, _),
+        !:Unification = complicated_unify(Modes, CanFail, TypeInfoVars)
+    ;
+        % This can happen if an earlier stage of compilation has already
+        % determined that this unification is particular kind of unification.
+        % In that case, the type_info vars won't be needed.
+        ( !.Unification = construct(_, _, _, _, _, _, _)
+        ; !.Unification = deconstruct(_, _, _, _, _, _)
+        ; !.Unification = assign(_, _)
+        ; !.Unification = simple_test(_, _)
+        )
+    ).
+
+:- pred polymorphism_process_unify_functor(prog_var::in, cons_id::in,
+    list(prog_var)::in, unify_mode::in, unification::in, unify_context::in,
+    hlds_goal_info::in, hlds_goal::out, bool::out,
+    poly_info::in, poly_info::out) is det.
+
+polymorphism_process_unify_functor(X0, ConsId0, ArgVars0, Mode0, Unification0,
+        UnifyContext, GoalInfo0, Goal, Changed, !Info) :-
+    poly_info_get_module_info(!.Info, ModuleInfo0),
+    poly_info_get_var_types(!.Info, VarTypes0),
+    lookup_var_type(VarTypes0, X0, TypeOfX),
+    list.length(ArgVars0, Arity),
+
+    % We replace any unifications with higher order pred constants
+    % by lambda expressions. For example, we replace
+    %
+    %   X = list.append(Y)     % Y::in, X::out
+    %
+    % with
+    %
+    %   X = (pred(A1::in, A2::out) is ... :- list.append(Y, A1, A2))
+    %
+    % We do this because it makes two things easier. First, mode analysis
+    % needs to check that the lambda goal doesn't bind any nonlocal variables
+    % (e.g. `Y' in above example). This would require a bit of moderately
+    % tricky special case code if we didn't expand them here. Second, this pass
+    % (polymorphism.m) is a lot easier if we don't have to handle higher order
+    % constants. If it turns out that the predicate was nonpolymorphic,
+    % lambda.m will turn the lambda expression back into a higher order
+    % constant again.
+    %
+    % Note that this transformation is also done by modecheck_unify.m, in case
+    % we are rerunning mode analysis after lambda.m has already been run;
+    % any changes to the code here will also need to be duplicated there.
+
+    (
+        % Check if variable has a higher order type.
+        ConsId0 = closure_cons(ShroudedPredProcId, _),
+        proc(PredId, ProcId0) = unshroud_pred_proc_id(ShroudedPredProcId),
+        type_is_higher_order_details(TypeOfX, Purity, _PredOrFunc, EvalMethod,
+            CalleeArgTypes)
+    ->
+        % An `invalid_proc_id' means the predicate is multi-moded. We can't
+        % pick the right mode yet. Perform the rest of the transformation with
+        % any mode (the first) but mark the goal with a feature so that mode
+        % checking knows to fix it up later.
+        ( ProcId0 = invalid_proc_id ->
+            module_info_pred_info(ModuleInfo0, PredId, PredInfo),
+            ProcIds = pred_info_procids(PredInfo),
+            (
+                ProcIds = [ProcId | _],
+                goal_info_add_feature(feature_lambda_undetermined_mode,
+                    GoalInfo0, GoalInfo1)
+            ;
+                ProcIds = [],
+                unexpected($module, $pred, "no modes")
+            )
+        ;
+            ProcId = ProcId0,
+            GoalInfo1 = GoalInfo0
+        ),
+        % Convert the higher order pred term to a lambda goal.
+        poly_info_get_varset(!.Info, VarSet0),
+        Context = goal_info_get_context(GoalInfo0),
+        convert_pred_to_lambda_goal(Purity, EvalMethod, X0, PredId, ProcId,
+            ArgVars0, CalleeArgTypes, UnifyContext, GoalInfo1, Context,
+            ModuleInfo0, Functor0, VarSet0, VarSet, VarTypes0, VarTypes),
+        poly_info_set_varset_and_types(VarSet, VarTypes, !Info),
+        % Process the unification in its new form.
+        polymorphism_process_unify(X0, Functor0, Mode0, Unification0,
+            UnifyContext, GoalInfo1, Goal, !Info),
+        Changed = yes
+    ;
+        % Is this a construction or deconstruction of an existentially
+        % typed data type?
+
+        % Check whether the functor had a "new " prefix.
+        % If so, assume it is a construction, and strip off the prefix.
+        % Otherwise, assume it is a deconstruction.
+
+        ConsId0 = cons(Functor0, Arity, ConsTypeCtor),
+        ( remove_new_prefix(Functor0, OrigFunctor) ->
+            ConsId = cons(OrigFunctor, Arity, ConsTypeCtor),
+            IsConstruction = yes
+        ;
+            ConsId = ConsId0,
+            IsConstruction = no
+        ),
+
+        % Check whether the functor (with the "new " prefix removed)
+        % is an existentially typed functor.
+        type_util.get_existq_cons_defn(ModuleInfo0, TypeOfX, ConsId, ConsDefn)
+    ->
+        % Add extra arguments to the unification for the
+        % type_info and/or type_class_info variables.
+
+        lookup_var_types(VarTypes0, ArgVars0, ActualArgTypes),
+        polymorphism_process_existq_unify_functor(ConsDefn,
+            IsConstruction, ActualArgTypes, TypeOfX, GoalInfo0,
+            ExtraVars, ExtraGoals, !Info),
+        ArgVars = ExtraVars ++ ArgVars0,
+        NonLocals0 = goal_info_get_nonlocals(GoalInfo0),
+        set_of_var.insert_list(ExtraVars, NonLocals0, NonLocals),
+        goal_info_set_nonlocals(NonLocals, GoalInfo0, GoalInfo1),
+
+        % Some of the argument unifications may be complicated unifications,
+        % which may need type_infos.
+        unification_typeinfos(TypeOfX, Unification0, Unification,
+            GoalInfo1, GoalInfo, _Changed, !Info),
+
+        UnifyExpr = unify(X0, rhs_functor(ConsId, IsConstruction, ArgVars),
+            Mode0, Unification, UnifyContext),
+        Unify = hlds_goal(UnifyExpr, GoalInfo),
+        GoalList = ExtraGoals ++ [Unify],
+        conj_list_to_goal(GoalList, GoalInfo0, Goal),
+        Changed = yes
+    ;
+        % We leave construction/deconstruction unifications alone.
+        % Some of the argument unifications may be complicated unifications,
+        % which may need type_infos.
+
+        % XXX Return original Goal0 if Changed = no.
+        unification_typeinfos(TypeOfX, Unification0, Unification,
+            GoalInfo0, GoalInfo, Changed, !Info),
+        GoalExpr = unify(X0, rhs_functor(ConsId0, no, ArgVars0), Mode0,
+            Unification, UnifyContext),
+        Goal = hlds_goal(GoalExpr, GoalInfo)
+    ).
+
+convert_pred_to_lambda_goal(Purity, EvalMethod, X0, PredId, ProcId,
+        ArgVars0, PredArgTypes, UnifyContext, GoalInfo0, Context,
+        ModuleInfo0, Functor, !VarSet, !VarTypes) :-
+    % Create the new lambda-quantified variables.
+    create_fresh_vars(PredArgTypes, LambdaVars, !VarSet, !VarTypes),
+    Args = ArgVars0 ++ LambdaVars,
+
+    % Build up the hlds_goal_expr for the call that will form the lambda goal.
+    module_info_pred_proc_info(ModuleInfo0, PredId, ProcId,
+        PredInfo, ProcInfo),
+
+    PredModule = pred_info_module(PredInfo),
+    PredName = pred_info_name(PredInfo),
+    QualifiedPName = qualified(PredModule, PredName),
+
+    % The ConsId's type_ctor shouldn't matter in a call_unify_context.
+    ConsId = cons(QualifiedPName, list.length(ArgVars0),
+        cons_id_dummy_type_ctor),
+    RHS = rhs_functor(ConsId, no, ArgVars0),
+    CallUnifyContext = call_unify_context(X0, RHS, UnifyContext),
+    LambdaGoalExpr = plain_call(PredId, ProcId, Args, not_builtin,
+        yes(CallUnifyContext), QualifiedPName),
+
+    % Construct a goal_info for the lambda goal, making sure to set up
+    % the nonlocals field in the goal_info correctly. The goal_id is needed
+    % to compute constraint_ids correctly.
+
+    NonLocals = goal_info_get_nonlocals(GoalInfo0),
+    set_of_var.insert_list(LambdaVars, NonLocals, OutsideVars),
+    set_of_var.list_to_set(Args, InsideVars),
+    set_of_var.intersect(OutsideVars, InsideVars, LambdaNonLocals),
+    GoalId = goal_info_get_goal_id(GoalInfo0),
+    goal_info_init(LambdaGoalInfo0),
+    goal_info_set_context(Context, LambdaGoalInfo0, LambdaGoalInfo1),
+    goal_info_set_nonlocals(LambdaNonLocals, LambdaGoalInfo1, LambdaGoalInfo2),
+    goal_info_set_purity(Purity, LambdaGoalInfo2, LambdaGoalInfo3),
+    goal_info_set_goal_id(GoalId, LambdaGoalInfo3, LambdaGoalInfo),
+    LambdaGoal = hlds_goal(LambdaGoalExpr, LambdaGoalInfo),
+
+    % Work out the modes of the introduced lambda variables and the determinism
+    % of the lambda goal.
+    lambda_modes_and_det(ProcInfo, LambdaVars, LambdaModes, LambdaDet),
+
+    % Construct the lambda expression.
+
+    PredOrFunc = pred_info_is_pred_or_func(PredInfo),
+    % Higher-order values created in this fashion are always ground.
+    Groundness = ho_ground,
+    Functor = rhs_lambda_goal(Purity, Groundness, PredOrFunc, EvalMethod,
+        ArgVars0, LambdaVars, LambdaModes, LambdaDet, LambdaGoal).
+
+fix_undetermined_mode_lambda_goal(ProcId, Functor0, Functor, ModuleInfo) :-
+    Functor0 = rhs_lambda_goal(Purity, Groundness, PredOrFunc, EvalMethod,
+        ArgVars0, LambdaVars, _LambdaModes0, _LambdaDet0, LambdaGoal0),
+    LambdaGoal0 = hlds_goal(_, LambdaGoalInfo),
+    goal_to_conj_list(LambdaGoal0, LambdaGoalList0),
+    (
+        list.split_last(LambdaGoalList0, LambdaGoalButLast0, LastGoal0),
+        LastGoal0 = hlds_goal(LastGoalExpr0, LastGoalInfo0),
+        LastGoalExpr0 = plain_call(PredId0, _DummyProcId, Args0, not_builtin,
+            MaybeCallUnifyContext0, QualifiedPName0)
+    ->
+        LambdaGoalButLast = LambdaGoalButLast0,
+        LastGoalInfo = LastGoalInfo0,
+        PredId = PredId0,
+        Args = Args0,
+        MaybeCallUnifyContext = MaybeCallUnifyContext0,
+        QualifiedPName = QualifiedPName0
+    ;
+        unexpected($module, $pred, "unmatched lambda goal")
+    ),
+
+    module_info_pred_proc_info(ModuleInfo, PredId, ProcId, _, ProcInfo),
+
+    % Build up the lambda goal.
+    LastGoalExpr = plain_call(PredId, ProcId, Args, not_builtin,
+        MaybeCallUnifyContext, QualifiedPName),
+    LastGoal = hlds_goal(LastGoalExpr, LastGoalInfo),
+    conj_list_to_goal(LambdaGoalButLast ++ [LastGoal], LambdaGoalInfo,
+        LambdaGoal),
+
+    % Work out the modes of the introduced lambda variables and the determinism
+    % of the lambda goal.
+    lambda_modes_and_det(ProcInfo, LambdaVars, LambdaModes, LambdaDet),
+
+    % Construct the lambda expression.
+    Functor = rhs_lambda_goal(Purity, Groundness, PredOrFunc, EvalMethod,
+        ArgVars0, LambdaVars, LambdaModes, LambdaDet, LambdaGoal).
+
+:- pred lambda_modes_and_det(proc_info::in, prog_vars::in, list(mer_mode)::out,
+    determinism::out) is det.
+
+lambda_modes_and_det(ProcInfo, LambdaVars, LambdaModes, LambdaDet) :-
+    proc_info_get_argmodes(ProcInfo, ArgModes),
+    list.length(ArgModes, NumArgModes),
+    list.length(LambdaVars, NumLambdaVars),
+    ( list.drop(NumArgModes - NumLambdaVars, ArgModes, LambdaModesPrime) ->
+        LambdaModes = LambdaModesPrime
+    ;
+        unexpected($module, $pred, "list.drop failed")
+    ),
+    proc_info_get_declared_determinism(ProcInfo, MaybeDet),
+    (
+        MaybeDet = yes(Det),
+        LambdaDet = Det
+    ;
+        MaybeDet = no,
+        sorry($module, $pred,
+            "determinism inference for higher order predicate terms.")
+    ).
+
+:- pred create_fresh_vars(list(mer_type)::in, list(prog_var)::out,
+    prog_varset::in, prog_varset::out, vartypes::in, vartypes::out) is det.
+
+create_fresh_vars([], [], !VarSet, !VarTypes).
+create_fresh_vars([Type | Types], [Var | Vars], !VarSet, !VarTypes) :-
+    varset.new_var(Var, !VarSet),
+    add_var_type(Var, Type, !VarTypes),
+    create_fresh_vars(Types, Vars, !VarSet, !VarTypes).
+
+%-----------------------------------------------------------------------------%
+
+    % Compute the extra arguments that we need to add to a unification with
+    % an existentially quantified data constructor.
+    %
+:- pred polymorphism_process_existq_unify_functor(ctor_defn::in, bool::in,
+    list(mer_type)::in, mer_type::in, hlds_goal_info::in, list(prog_var)::out,
+    list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+polymorphism_process_existq_unify_functor(CtorDefn, IsConstruction,
+        ActualArgTypes, ActualRetType, GoalInfo,
+        ExtraVars, ExtraGoals, !Info) :-
+    CtorDefn = ctor_defn(CtorTypeVarSet, CtorExistQVars, CtorKindMap,
+        CtorExistentialConstraints, CtorArgTypes, CtorRetType),
+
+    % Rename apart the type variables in the constructor definition.
+    poly_info_get_typevarset(!.Info, TypeVarSet0),
+    tvarset_merge_renaming(TypeVarSet0, CtorTypeVarSet, TypeVarSet,
+        CtorToParentRenaming),
+    apply_variable_renaming_to_tvar_list(CtorToParentRenaming,
+        CtorExistQVars, ParentExistQVars),
+    apply_variable_renaming_to_tvar_kind_map(CtorToParentRenaming,
+        CtorKindMap, ParentKindMap),
+    apply_variable_renaming_to_prog_constraint_list(CtorToParentRenaming,
+        CtorExistentialConstraints, ParentExistentialConstraints),
+    apply_variable_renaming_to_type_list(CtorToParentRenaming,
+        CtorArgTypes, ParentArgTypes),
+    apply_variable_renaming_to_type(CtorToParentRenaming, CtorRetType,
+        ParentRetType),
+    poly_info_set_typevarset(TypeVarSet, !Info),
+
+    % Compute the type bindings resulting from the functor's actual argument
+    % and return types. These are the ones that might bind the ExistQVars.
+    type_list_subsumes_det([ParentRetType | ParentArgTypes],
+        [ActualRetType | ActualArgTypes], ParentToActualTypeSubst),
+
+    % Create type_class_info variables for the type class constraints.
+    poly_info_get_constraint_map(!.Info, ConstraintMap),
+    GoalId = goal_info_get_goal_id(GoalInfo),
+    list.length(ParentExistentialConstraints, NumExistentialConstraints),
+    Context = goal_info_get_context(GoalInfo),
+    (
+        IsConstruction = yes,
+        % Assume it is a construction.
+        lookup_hlds_constraint_list(ConstraintMap, unproven, GoalId,
+            NumExistentialConstraints, ActualExistentialConstraints),
+        make_typeclass_info_vars(ActualExistentialConstraints, [], Context,
+            ExtraTypeClassVarsMCAs, ExtraTypeClassGoals, !Info),
+        assoc_list.keys(ExtraTypeClassVarsMCAs, ExtraTypeClassVars)
+    ;
+        IsConstruction = no,
+        % Assume it is a deconstruction.
+        lookup_hlds_constraint_list(ConstraintMap, assumed, GoalId,
+            NumExistentialConstraints, ActualExistentialConstraints),
+        make_existq_typeclass_info_vars(ActualExistentialConstraints,
+            ExtraTypeClassVars, ExtraTypeClassGoals, !Info)
+    ),
+
+    % Compute the set of _unconstrained_ existentially quantified type
+    % variables, and then apply the type bindings to those type variables
+    % to figure out what types they are bound to.
+    constraint_list_get_tvars(ParentExistentialConstraints,
+        ParentExistConstrainedTVars),
+    list.delete_elems(ParentExistQVars, ParentExistConstrainedTVars,
+        ParentUnconstrainedExistQVars),
+    apply_rec_subst_to_tvar_list(ParentKindMap, ParentToActualTypeSubst,
+        ParentUnconstrainedExistQVars, ActualExistentialTypes),
+
+    % Create type_info variables for the _unconstrained_ existentially
+    % quantified type variables.
+    polymorphism_do_make_type_info_vars(ActualExistentialTypes, Context,
+        ExtraTypeInfoVarsMCAs, ExtraTypeInfoGoals, !Info),
+    assoc_list.keys(ExtraTypeInfoVarsMCAs, ExtraTypeInfoVars),
+
+    % The type_class_info variables go AFTER the type_info variables
+    % (for consistency with the order for argument passing,
+    % and because the RTTI support in the runtime system relies on it)
+
+    ExtraGoals = ExtraTypeInfoGoals ++ ExtraTypeClassGoals,
+    ExtraVars = ExtraTypeInfoVars ++ ExtraTypeClassVars.
+
+%-----------------------------------------------------------------------------%
+
+:- pred polymorphism_process_foreign_proc(pred_info::in,
+    hlds_goal_expr::in(bound(call_foreign_proc(ground,ground,ground,ground,
+    ground,ground,ground))), hlds_goal_info::in, hlds_goal::out,
+    poly_info::in, poly_info::out) is det.
+
+polymorphism_process_foreign_proc(PredInfo, GoalExpr0, GoalInfo0,
+        Goal, !Info) :-
+    % Insert the type_info vars into the argname map, so that the foreign_proc
+    % can refer to the type_info variable for type T as `TypeInfo_for_T'.
+    GoalExpr0 = call_foreign_proc(Attributes, PredId, ProcId,
+        Args0, ProcExtraArgs, MaybeTraceRuntimeCond, Impl),
+    ArgVars0 = list.map(foreign_arg_var, Args0),
+    polymorphism_process_call(PredId, ArgVars0, GoalInfo0, GoalInfo,
+        ExtraVars, ExtraGoals, !Info),
+    CanOptAwayUnnamed = yes,
+    polymorphism_process_foreign_proc_args(PredInfo, CanOptAwayUnnamed, Impl,
+        ExtraVars, ExtraArgs),
+    Args = ExtraArgs ++ Args0,
+
+    % Plug it all back together.
+    CallExpr = call_foreign_proc(Attributes, PredId, ProcId,
+        Args, ProcExtraArgs, MaybeTraceRuntimeCond, Impl),
+    Call = hlds_goal(CallExpr, GoalInfo),
+    GoalList = ExtraGoals ++ [Call],
+    conj_list_to_goal(GoalList, GoalInfo0, Goal).
+
+:- pred polymorphism_process_foreign_proc_args(pred_info::in, bool::in,
+    pragma_foreign_code_impl::in, list(prog_var)::in, list(foreign_arg)::out)
+    is det.
+
+polymorphism_process_foreign_proc_args(PredInfo, CanOptAwayUnnamed, Impl, Vars,
+        Args) :-
+    pred_info_get_arg_types(PredInfo, PredTypeVarSet, ExistQVars,
+        PredArgTypes),
+
+    % Find out which variables are constrained (so that we don't add
+    % type_infos for them).
+    pred_info_get_class_context(PredInfo, constraints(UnivCs, ExistCs)),
+    UnivVars0 = list.map(get_constrained_vars, UnivCs),
+    list.condense(UnivVars0, UnivConstrainedVars),
+    ExistVars0 = list.map(get_constrained_vars, ExistCs),
+    list.condense(ExistVars0, ExistConstrainedVars),
+
+    type_vars_list(PredArgTypes, PredTypeVars0),
+    list.remove_dups(PredTypeVars0, PredTypeVars1),
+    list.delete_elems(PredTypeVars1, UnivConstrainedVars, PredTypeVars2),
+    list.delete_elems(PredTypeVars2, ExistConstrainedVars, PredTypeVars),
+
+    % The argument order is described at the top of this file.
+
+    in_mode(In),
+    out_mode(Out),
+
+    list.map(foreign_proc_add_typeclass_info(CanOptAwayUnnamed, Out, Impl,
+        PredTypeVarSet), ExistCs, ExistTypeClassArgInfos),
+    list.map(foreign_proc_add_typeclass_info(CanOptAwayUnnamed, In, Impl,
+        PredTypeVarSet), UnivCs, UnivTypeClassArgInfos),
+    TypeClassArgInfos = UnivTypeClassArgInfos ++ ExistTypeClassArgInfos,
+
+    list.filter((pred(X::in) is semidet :- list.member(X, ExistQVars)),
+        PredTypeVars, ExistUnconstrainedVars, UnivUnconstrainedVars),
+
+    list.map(foreign_proc_add_typeinfo(CanOptAwayUnnamed, Out, Impl,
+        PredTypeVarSet), ExistUnconstrainedVars, ExistTypeArgInfos),
+    list.map(foreign_proc_add_typeinfo(CanOptAwayUnnamed, In, Impl,
+        PredTypeVarSet), UnivUnconstrainedVars, UnivTypeArgInfos),
+    TypeInfoArgInfos = UnivTypeArgInfos ++ ExistTypeArgInfos,
+
+    ArgInfos = TypeInfoArgInfos ++ TypeClassArgInfos,
+
+    % Insert type_info/typeclass_info types for all the inserted
+    % type_info/typeclass_info vars into the argument type list.
+
+    TypeInfoTypes = list.map((func(_) = type_info_type), PredTypeVars),
+    list.map(build_typeclass_info_type, UnivCs, UnivTypes),
+    list.map(build_typeclass_info_type, ExistCs, ExistTypes),
+    OrigArgTypes = TypeInfoTypes ++ UnivTypes ++ ExistTypes,
+
+    make_foreign_args(Vars, ArgInfos, OrigArgTypes, Args).
+
+:- pred foreign_proc_add_typeclass_info(bool::in, mer_mode::in,
+    pragma_foreign_code_impl::in, tvarset::in, prog_constraint::in,
+    pair(maybe(pair(string, mer_mode)), box_policy)::out) is det.
+
+foreign_proc_add_typeclass_info(CanOptAwayUnnamed, Mode, Impl, TypeVarSet,
+        Constraint, MaybeArgName - native_if_possible) :-
+    Constraint = constraint(SymName, Types),
+    Name = sym_name_to_string_sep(SymName, "__"),
+    type_vars_list(Types, TypeVars),
+    TypeVarNames = list.map(underscore_and_tvar_name(TypeVarSet), TypeVars),
+    string.append_list(["TypeClassInfo_for_", Name | TypeVarNames],
+        ConstraintVarName),
+    % If the variable name corresponding to the typeclass_info isn't mentioned
+    % in the C code fragment, don't pass the variable to the C code at all.
+    (
+        CanOptAwayUnnamed = yes,
+        foreign_code_does_not_use_variable(Impl, ConstraintVarName)
+    ->
+        MaybeArgName = no
+    ;
+        MaybeArgName = yes(ConstraintVarName - Mode)
+    ).
+
+:- pred foreign_proc_add_typeinfo(bool::in, mer_mode::in,
+    pragma_foreign_code_impl::in, tvarset::in, tvar::in,
+    pair(maybe(pair(string, mer_mode)), box_policy)::out) is det.
+
+foreign_proc_add_typeinfo(CanOptAwayUnnamed, Mode, Impl, TypeVarSet, TVar,
+        MaybeArgName - native_if_possible) :-
+    ( varset.search_name(TypeVarSet, TVar, TypeVarName) ->
+        C_VarName = "TypeInfo_for_" ++ TypeVarName,
+        % If the variable name corresponding to the type_info isn't mentioned
+        % in the C code fragment, don't pass the variable to the C code at all.
+        (
+            CanOptAwayUnnamed = yes,
+            foreign_code_does_not_use_variable(Impl, C_VarName)
+        ->
+            MaybeArgName = no
+        ;
+            MaybeArgName = yes(C_VarName - Mode)
+        )
+    ;
+        MaybeArgName = no
+    ).
+
+:- pred foreign_code_does_not_use_variable(pragma_foreign_code_impl::in,
+    string::in) is semidet.
+
+foreign_code_does_not_use_variable(Impl, VarName) :-
+    % XXX This test used to be turned off with the semidet_fail, as it caused
+    % the compiler to abort when compiling declarative_execution.m in stage2,
+    % but this is no longer the case.
+    % semidet_fail,
+    \+ foreign_code_uses_variable(Impl, VarName).
+
+:- func underscore_and_tvar_name(tvarset, tvar) = string.
+
+underscore_and_tvar_name(TypeVarSet, TVar) = TVarName :-
+    varset.lookup_name(TypeVarSet, TVar, TVarName0),
+    TVarName = "_" ++ TVarName0.
+
+:- pred polymorphism_process_plain_conj(list(hlds_goal)::in,
+    list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+polymorphism_process_plain_conj([], [], !Info).
+polymorphism_process_plain_conj([Goal0 | Goals0], [Goal | Goals], !Info) :-
+    polymorphism_process_goal(Goal0, Goal, !Info),
+    polymorphism_process_plain_conj(Goals0, Goals, !Info).
+
+:- pred polymorphism_process_par_conj(list(hlds_goal)::in,
+    list(hlds_goal)::out, cache_maps::in, poly_info::in, poly_info::out)
+    is det.
+
+polymorphism_process_par_conj([], [], _, !Info).
+polymorphism_process_par_conj([Goal0 | Goals0], [Goal | Goals],
+        InitialSnapshot, !Info) :-
+    % Any variable that a later parallel conjunct reuses from an earlier
+    % parallel conjunct (a) will definitely require synchronization, whose
+    % cost will be greater than the cost of building a typeinfo from scratch,
+    % and (b) may drastically reduce the available parallelism, if the earlier
+    % conjunct produces the variable late but the later conjunct requires it
+    % early.
+    set_cache_maps_snapshot("par conjunct", InitialSnapshot, !Info),
+    polymorphism_process_goal(Goal0, Goal, !Info),
+    polymorphism_process_par_conj(Goals0, Goals, InitialSnapshot, !Info).
+
+:- pred polymorphism_process_disj(list(hlds_goal)::in, list(hlds_goal)::out,
+    cache_maps::in, poly_info::in, poly_info::out) is det.
+
+polymorphism_process_disj([], [], _, !Info).
+polymorphism_process_disj([Goal0 | Goals0], [Goal | Goals], InitialSnapshot,
+        !Info) :-
+    set_cache_maps_snapshot("disjunct", InitialSnapshot, !Info),
+    polymorphism_process_goal(Goal0, Goal, !Info),
+    polymorphism_process_disj(Goals0, Goals, InitialSnapshot, !Info).
+
+:- pred polymorphism_process_cases(list(case)::in, list(case)::out,
+    cache_maps::in, poly_info::in, poly_info::out) is det.
+
+polymorphism_process_cases([], [], _, !Info).
+polymorphism_process_cases([Case0 | Cases0], [Case | Cases], InitialSnapshot,
+        !Info) :-
+    Case0 = case(MainConsId, OtherConsIds, Goal0),
+    set_cache_maps_snapshot("case", InitialSnapshot, !Info),
+    polymorphism_process_goal(Goal0, Goal, !Info),
+    Case = case(MainConsId, OtherConsIds, Goal),
+    polymorphism_process_cases(Cases0, Cases, InitialSnapshot, !Info).
+
+%-----------------------------------------------------------------------------%
+
+    % XXX document me
+    %
+    % XXX the following code ought to be rewritten to handle
+    % existential/universal type_infos and type_class_infos
+    % in a more consistent manner.
+    %
+:- pred polymorphism_process_call(pred_id::in, list(prog_var)::in,
+    hlds_goal_info::in, hlds_goal_info::out,
+    list(prog_var)::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+polymorphism_process_call(PredId, ArgVars0, GoalInfo0, GoalInfo,
+        ExtraVars, ExtraGoals, !Info) :-
+    poly_info_get_var_types(!.Info, VarTypes),
+    poly_info_get_typevarset(!.Info, TypeVarSet0),
+    poly_info_get_module_info(!.Info, ModuleInfo),
+
+    % The order of the added variables is important, and must match the
+    % order specified at the top of this file.
+
+    module_info_pred_info(ModuleInfo, PredId, PredInfo),
+    pred_info_get_arg_types(PredInfo, PredTypeVarSet, PredExistQVars,
+        PredArgTypes),
+    pred_info_get_tvar_kinds(PredInfo, PredKindMap),
+    pred_info_get_class_context(PredInfo, PredClassContext),
+
+    % VarTypes, TypeVarSet* etc come from the caller.
+    % PredTypeVarSet, PredArgTypes, PredExistQVars, etc come
+    % directly from the callee.
+    % ParentArgTypes, ParentExistQVars etc come from a version
+    % of the callee that has been renamed apart from the caller.
+    %
+    % The difference between e.g. PredArgTypes and ParentArgTypes is the
+    % application of PredToParentTypeRenaming, which maps the type variables
+    % in the callee to new type variables in the caller. Adding the new type
+    % variables to TypeVarSet0 yields TypeVarSet.
+
+    ( varset.is_empty(PredTypeVarSet) ->
+        % Optimize a common case.
+        map.init(PredToParentTypeRenaming),
+        TypeVarSet = TypeVarSet0,
+        ParentArgTypes = PredArgTypes,
+        ParentKindMap = PredKindMap,
+        ParentTVars = [],
+        ParentExistQVars = []
+    ;
+        % This merge might be a performance bottleneck?
+        tvarset_merge_renaming(TypeVarSet0, PredTypeVarSet, TypeVarSet,
+            PredToParentTypeRenaming),
+        apply_variable_renaming_to_type_list(PredToParentTypeRenaming,
+            PredArgTypes, ParentArgTypes),
+        type_vars_list(ParentArgTypes, ParentTVars),
+        apply_variable_renaming_to_tvar_kind_map(PredToParentTypeRenaming,
+            PredKindMap, ParentKindMap),
+        apply_variable_renaming_to_tvar_list(PredToParentTypeRenaming,
+            PredExistQVars, ParentExistQVars)
+    ),
+
+    PredModule = pred_info_module(PredInfo),
+    PredName = pred_info_name(PredInfo),
+    PredArity = pred_info_orig_arity(PredInfo),
+    (
+        (
+            % Optimize for the common case of nonpolymorphic call
+            % with no constraints.
+            ParentTVars = [],
+            PredClassContext = constraints([], [])
+        ;
+            % Some builtins don't need or want the type_info.
+            no_type_info_builtin(PredModule, PredName, PredArity)
+        )
+    ->
+        GoalInfo = GoalInfo0,
+        ExtraGoals = [],
+        ExtraVars = []
+    ;
+        poly_info_set_typevarset(TypeVarSet, !Info),
+
+        % Compute which "parent" type variables are constrained
+        % by the type class constraints.
+        apply_variable_renaming_to_prog_constraints(PredToParentTypeRenaming,
+            PredClassContext, ParentClassContext),
+        ParentClassContext = constraints(ParentUnivConstraints,
+            ParentExistConstraints),
+        constraint_list_get_tvars(ParentUnivConstraints,
+            ParentUnivConstrainedTVars),
+        constraint_list_get_tvars(ParentExistConstraints,
+            ParentExistConstrainedTVars),
+
+        % Calculate the set of unconstrained type vars. Split these into
+        % existential and universal type vars.
+        list.remove_dups(ParentTVars, ParentUnconstrainedTVars0),
+        list.delete_elems(ParentUnconstrainedTVars0,
+            ParentUnivConstrainedTVars, ParentUnconstrainedTVars1),
+        list.delete_elems(ParentUnconstrainedTVars1,
+            ParentExistConstrainedTVars, ParentUnconstrainedTVars),
+        list.delete_elems(ParentUnconstrainedTVars, ParentExistQVars,
+            ParentUnconstrainedUnivTVars),
+        list.delete_elems(ParentUnconstrainedTVars,
+            ParentUnconstrainedUnivTVars, ParentUnconstrainedExistTVars),
+
+        % Calculate the "parent to actual" binding.
+        lookup_var_types(VarTypes, ArgVars0, ActualArgTypes),
+        type_list_subsumes_det(ParentArgTypes, ActualArgTypes,
+            ParentToActualTypeSubst),
+
+        % Make the universally quantified typeclass_infos for the call.
+        poly_info_get_constraint_map(!.Info, ConstraintMap),
+        GoalId = goal_info_get_goal_id(GoalInfo0),
+        list.length(ParentUnivConstraints, NumUnivConstraints),
+        lookup_hlds_constraint_list(ConstraintMap, unproven, GoalId,
+            NumUnivConstraints, ActualUnivConstraints),
+        apply_rec_subst_to_tvar_list(ParentKindMap, ParentToActualTypeSubst,
+            ParentExistQVars, ActualExistQVarTypes),
+        (
+            prog_type.type_list_to_var_list(ActualExistQVarTypes,
+                ActualExistQVars0)
+        ->
+            ActualExistQVars = ActualExistQVars0
+        ;
+            unexpected($module, $pred, "existq_tvar bound")
+        ),
+        Context = goal_info_get_context(GoalInfo0),
+        make_typeclass_info_vars(ActualUnivConstraints, ActualExistQVars,
+            Context, ExtraUnivClassVarsMCAs, ExtraUnivClassGoals,
+            !Info),
+        assoc_list.keys(ExtraUnivClassVarsMCAs, ExtraUnivClassVars),
+
+        % Make variables to hold any existentially quantified typeclass_infos
+        % in the call, insert them into the typeclass_info map.
+        list.length(ParentExistConstraints, NumExistConstraints),
+        lookup_hlds_constraint_list(ConstraintMap, assumed, GoalId,
+            NumExistConstraints, ActualExistConstraints),
+        make_existq_typeclass_info_vars(ActualExistConstraints,
+            ExtraExistClassVars, ExtraExistClassGoals, !Info),
+
+        % Make variables to hold typeinfos for unconstrained universal type
+        % vars.
+        apply_rec_subst_to_tvar_list(ParentKindMap, ParentToActualTypeSubst,
+            ParentUnconstrainedUnivTVars, ActualUnconstrainedUnivTypes),
+        polymorphism_do_make_type_info_vars(ActualUnconstrainedUnivTypes,
+            Context, ExtraUnivTypeInfoVarsMCAs,
+            ExtraUnivTypeInfoGoals, !Info),
+        assoc_list.keys(ExtraUnivTypeInfoVarsMCAs,
+            ExtraUnivTypeInfoVars),
+
+        % Make variables to hold typeinfos for unconstrained existential type
+        % vars.
+        apply_rec_subst_to_tvar_list(ParentKindMap, ParentToActualTypeSubst,
+            ParentUnconstrainedExistTVars, ActualUnconstrainedExistTypes),
+        polymorphism_do_make_type_info_vars(ActualUnconstrainedExistTypes,
+            Context, ExtraExistTypeInfoVarsMCAs,
+            ExtraExistTypeInfoGoals, !Info),
+        assoc_list.keys(ExtraExistTypeInfoVarsMCAs,
+            ExtraExistTypeInfoVars),
+
+        % Add up the extra vars and goals.
+        ExtraGoals = ExtraUnivClassGoals ++ ExtraExistClassGoals
+            ++ ExtraUnivTypeInfoGoals ++ ExtraExistTypeInfoGoals,
+        ExtraVars = ExtraUnivTypeInfoVars ++ ExtraExistTypeInfoVars
+            ++ ExtraUnivClassVars ++ ExtraExistClassVars,
+
+        % Update the nonlocals.
+        NonLocals0 = goal_info_get_nonlocals(GoalInfo0),
+        set_of_var.insert_list(ExtraVars, NonLocals0, NonLocals),
+        goal_info_set_nonlocals(NonLocals, GoalInfo0, GoalInfo)
+    ).
+
+%-----------------------------------------------------------------------------%
+
+polymorphism_process_new_call(CalleePredInfo, CalleeProcInfo, PredId, ProcId,
+        CallArgs0, BuiltinState, MaybeCallUnifyContext, SymName,
+        GoalInfo0, Goal, !Info) :-
+    % document me better
+    %
+    poly_info_get_typevarset(!.Info, TVarSet0),
+    poly_info_get_var_types(!.Info, VarTypes0),
+    lookup_var_types(VarTypes0, CallArgs0, ActualArgTypes0),
+    pred_info_get_arg_types(CalleePredInfo, PredTVarSet, _PredExistQVars,
+        PredArgTypes),
+    proc_info_get_headvars(CalleeProcInfo, CalleeHeadVars),
+    proc_info_get_rtti_varmaps(CalleeProcInfo, CalleeRttiVarMaps),
+
+    % Work out how many type_info args we need to prepend.
+    NCallArgs0 = list.length(ActualArgTypes0),
+    NPredArgs  = list.length(PredArgTypes),
+    NExtraArgs = NPredArgs - NCallArgs0,
+    (
+        list.drop(NExtraArgs, PredArgTypes, OrigPredArgTypes0),
+        list.take(NExtraArgs, CalleeHeadVars, CalleeExtraHeadVars0)
+    ->
+        OrigPredArgTypes = OrigPredArgTypes0,
+        CalleeExtraHeadVars = CalleeExtraHeadVars0
+    ;
+        unexpected($module, $pred, "extra args not found")
+    ),
+
+    % Work out the bindings of type variables in the call.
+    tvarset_merge_renaming(TVarSet0, PredTVarSet, TVarSet,
+        PredToParentRenaming),
+    apply_variable_renaming_to_type_list(PredToParentRenaming,
+        OrigPredArgTypes, OrigParentArgTypes),
+    type_list_subsumes_det(OrigParentArgTypes, ActualArgTypes0,
+        ParentToActualTSubst),
+    poly_info_set_typevarset(TVarSet, !Info),
+
+    % Look up the type variables that the type_infos in the caller are for,
+    % and apply the type bindings to calculate the types that the caller
+    % should pass type_infos for.
+    GetTypeInfoTypes = (pred(ProgVar::in, TypeInfoType::out) is det :-
+        rtti_varmaps_var_info(CalleeRttiVarMaps, ProgVar, VarInfo),
+        (
+            VarInfo = type_info_var(TypeInfoType)
+        ;
+            VarInfo = typeclass_info_var(_),
+            unexpected($module, $pred,
+                "unsupported: constraints on initialisation preds")
+        ;
+            VarInfo = non_rtti_var,
+            unexpected($module, $pred,
+                "missing rtti_var_info for initialisation pred")
+        )
+    ),
+    list.map(GetTypeInfoTypes, CalleeExtraHeadVars, PredTypeInfoTypes),
+    apply_variable_renaming_to_type_list(PredToParentRenaming,
+        PredTypeInfoTypes, ParentTypeInfoTypes),
+    apply_rec_subst_to_type_list(ParentToActualTSubst, ParentTypeInfoTypes,
+        ActualTypeInfoTypes),
+
+    % Construct goals to make the required type_infos.
+    Ctxt = term.context_init,
+    polymorphism_do_make_type_info_vars(ActualTypeInfoTypes, Ctxt,
+        ExtraArgsConstArgs, ExtraGoals, !Info),
+    assoc_list.keys(ExtraArgsConstArgs, ExtraArgs),
+    CallArgs = ExtraArgs ++ CallArgs0,
+    NonLocals0 = goal_info_get_nonlocals(GoalInfo0),
+    NonLocals1 = set_of_var.list_to_set(ExtraArgs),
+    set_of_var.union(NonLocals0, NonLocals1, NonLocals),
+    goal_info_set_nonlocals(NonLocals, GoalInfo0, GoalInfo),
+    CallGoalExpr = plain_call(PredId, ProcId, CallArgs, BuiltinState,
+        MaybeCallUnifyContext, SymName),
+    CallGoal = hlds_goal(CallGoalExpr, GoalInfo),
+    conj_list_to_goal(ExtraGoals ++ [CallGoal], GoalInfo, Goal).
+
+%-----------------------------------------------------------------------------%
+
+    % If the pred we are processing is a polymorphic predicate, or contains
+    % polymorphically-typed goals, we may need to fix up the quantification
+    % (nonlocal variables) of the goal so that it includes the extra type_info
+    % variables and typeclass_info variables that we added to the headvars
+    % or the arguments of existentially typed predicate calls, function calls
+    % and deconstruction unifications.
+    %
+    % Type(class)-infos added for ground types passed to predicate calls,
+    % function calls and existentially typed construction unifications
+    % do not require requantification because they are local to the conjunction
+    % containing the type(class)-info construction and the goal which uses the
+    % type(class)-info. The nonlocals for those goals are adjusted by
+    % the code which creates/alters them. However, reusing a type_info changes
+    % it from being local to nonlocal.
+    %
+:- pred fixup_quantification(proc_arg_vector(prog_var)::in,
+    existq_tvars::in, hlds_goal::in, hlds_goal::out,
+    poly_info::in, poly_info::out) is det.
+
+fixup_quantification(HeadVars, ExistQVars, Goal0, Goal, !Info) :-
+    (
+        % Optimize common case.
+        ExistQVars = [],
+        rtti_varmaps_no_tvars(!.Info ^ poly_rtti_varmaps),
+        poly_info_get_num_reuses(!.Info, NumReuses),
+        NumReuses = 0
+    ->
+        Goal = Goal0
+    ;
+        poly_info_get_varset(!.Info, VarSet0),
+        poly_info_get_var_types(!.Info, VarTypes0),
+        poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+        OutsideVars = proc_arg_vector_to_set(HeadVars),
+        implicitly_quantify_goal_general(ordinary_nonlocals_maybe_lambda,
+            set_to_bitset(OutsideVars), _Warnings, Goal0, Goal,
+            VarSet0, VarSet, VarTypes0, VarTypes, RttiVarMaps0, RttiVarMaps),
+        poly_info_set_varset_and_types(VarSet, VarTypes, !Info),
+        poly_info_set_rtti_varmaps(RttiVarMaps, !Info)
+    ).
+
+    % If the lambda goal we are processing is polymorphically typed, we may
+    % need to fix up the quantification (nonlocal variables) so that it
+    % includes the type_info variables and typeclass_info variables for
+    % any polymorphically typed variables in the nonlocals set or in the
+    % arguments (either the lambda vars or the implicit curried argument
+    % variables). Including typeinfos for arguments which are not in the
+    % nonlocals set of the goal, i.e. unused arguments, is necessary only
+    % if typeinfo_liveness is set, but we do it always, since we don't have
+    % the options available here, and the since cost is pretty minimal.
+    %
+:- pred fixup_lambda_quantification(list(prog_var)::in,
+    list(prog_var)::in, existq_tvars::in, hlds_goal::in, hlds_goal::out,
+    set_of_progvar::out, poly_info::in, poly_info::out) is det.
+
+fixup_lambda_quantification(ArgVars, LambdaVars, ExistQVars, !Goal,
+        NewOutsideVars, !Info) :-
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+    ( rtti_varmaps_no_tvars(RttiVarMaps0) ->
+        set_of_var.init(NewOutsideVars)
+    ;
+        poly_info_get_varset(!.Info, VarSet0),
+        poly_info_get_var_types(!.Info, VarTypes0),
+        !.Goal = hlds_goal(_, GoalInfo0),
+        NonLocals = goal_info_get_nonlocals(GoalInfo0),
+        set_of_var.insert_list(ArgVars, NonLocals, NonLocalsPlusArgs0),
+        set_of_var.insert_list(LambdaVars,
+            NonLocalsPlusArgs0, NonLocalsPlusArgs),
+        goal_util.extra_nonlocal_typeinfos(RttiVarMaps0, VarTypes0,
+            ExistQVars, NonLocalsPlusArgs, NewOutsideVars),
+        set_of_var.union(NonLocals, NewOutsideVars, OutsideVars),
+        implicitly_quantify_goal_general(ordinary_nonlocals_maybe_lambda,
+            OutsideVars, _Warnings, !Goal,
+            VarSet0, VarSet, VarTypes0, VarTypes, RttiVarMaps0, RttiVarMaps),
+        poly_info_set_varset_and_types(VarSet, VarTypes, !Info),
+        poly_info_set_rtti_varmaps(RttiVarMaps, !Info)
+    ).
+
+%-----------------------------------------------------------------------------%
+
+    % Given the list of constraints for a called predicate, create a list of
+    % variables to hold the typeclass_info for those constraints, and create
+    % a list of goals to initialize those typeclass_info variables to the
+    % appropriate typeclass_info structures for the constraints.
+    %
+    % Constraints should be renamed-apart and actual-to-formal substituted
+    % constraints. Constraints which are already in the rtti_varmaps are
+    % assumed to have already had their typeclass_infos initialized; for them,
+    % we just return the variable in the rtti_varmaps.
+    %
+:- pred make_typeclass_info_vars(list(prog_constraint)::in,
+    existq_tvars::in, prog_context::in,
+    assoc_list(prog_var, maybe(const_struct_arg))::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+make_typeclass_info_vars(Constraints, ExistQVars, Context,
+        TypeClassInfoVarsMCAs, ExtraGoals, !Info) :-
+    SeenInstances = [],
+    make_typeclass_info_vars_2(Constraints, SeenInstances, ExistQVars, Context,
+        TypeClassInfoVarsMCAs, ExtraGoals, !Info).
+
+    % Accumulator version of the above.
+    %
+:- pred make_typeclass_info_vars_2(list(prog_constraint)::in,
+    list(prog_constraint)::in, existq_tvars::in, prog_context::in,
+    assoc_list(prog_var, maybe(const_struct_arg))::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+make_typeclass_info_vars_2([], _Seen, _ExistQVars, _Context,
+        [], [], !Info).
+make_typeclass_info_vars_2([Constraint | Constraints], Seen, ExistQVars,
+        Context, [TypeClassInfoVarMCA | TypeClassInfoVarsMCAs],
+        ExtraGoals, !Info) :-
+    make_typeclass_info_var(Constraint, [Constraint | Seen],
+        ExistQVars, Context, TypeClassInfoVarMCA, HeadExtraGoals, !Info),
+    make_typeclass_info_vars_2(Constraints, Seen, ExistQVars,
+        Context, TypeClassInfoVarsMCAs, TailExtraGoals, !Info),
+    ExtraGoals = HeadExtraGoals ++ TailExtraGoals.
+
+:- pred make_typeclass_info_var(prog_constraint::in,
+    list(prog_constraint)::in, existq_tvars::in, prog_context::in,
+    pair(prog_var, maybe(const_struct_arg))::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+make_typeclass_info_var(Constraint, Seen, ExistQVars, Context,
+        TypeClassInfoVarMCA, Goals, !Info) :-
+    (
+        poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+        rtti_search_typeclass_info_var(RttiVarMaps0, Constraint,
+            OldTypeClassInfoVar)
+    ->
+        % We already have a typeclass_info for this constraint, either from
+        % a parameter to the pred or from an existentially quantified goal
+        % that we have already processed.
+        TypeClassInfoVar = OldTypeClassInfoVar,
+        TypeClassInfoVarMCA = TypeClassInfoVar - no,
+        Goals = []
+    ;
+        % We don't have the typeclass_info, so we must either have a proof
+        % that tells us how to make it, or ...
+        map.search(!.Info ^ poly_proof_map, Constraint, Proof)
+    ->
+        make_typeclass_info_from_proof(Constraint, Seen, Proof, ExistQVars,
+            Context, TypeClassInfoVarMCA, Goals, !Info)
+    ;
+        % ... it will be produced by an existentially typed goal that
+        % we will process later on.
+        make_typeclass_info_head_var(do_record_type_info_locns, Constraint,
+            TypeClassInfoVar, !Info),
+        poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+        rtti_reuse_typeclass_info_var(TypeClassInfoVar,
+            RttiVarMaps0, RttiVarMaps),
+        poly_info_set_rtti_varmaps(RttiVarMaps, !Info),
+        TypeClassInfoVarMCA = TypeClassInfoVar - no,
+        Goals = []
+    ).
+
+:- pred make_typeclass_info_from_proof(prog_constraint::in,
+    list(prog_constraint)::in, constraint_proof::in, existq_tvars::in,
+    prog_context::in, pair(prog_var, maybe(const_struct_arg))::out,
+    list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+make_typeclass_info_from_proof(Constraint, Seen, Proof,
+        ExistQVars, Context, TypeClassInfoVarMCA, Goals, !Info) :-
+    (
+        % XXX MR_Dictionary should have MR_Dictionaries for superclass
+        % We have to extract the typeclass_info from another one.
+        Proof = superclass(SubClassConstraint),
+        make_typeclass_info_from_subclass(Constraint, Seen, SubClassConstraint,
+            ExistQVars, Context, TypeClassInfoVarMCA, Goals, !Info)
+    ;
+        % We have to construct the typeclass_info using an instance
+        % declaration.
+        Proof = apply_instance(InstanceNum),
+        make_typeclass_info_from_instance(Constraint, Seen, InstanceNum,
+            ExistQVars, Context, TypeClassInfoVarMCA, Goals, !Info)
+    ).
+
+:- pred make_typeclass_info_from_subclass(prog_constraint::in,
+    list(prog_constraint)::in, prog_constraint::in, existq_tvars::in,
+    prog_context::in, pair(prog_var, maybe(const_struct_arg))::out,
+    list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+make_typeclass_info_from_subclass(Constraint, Seen, SubClassConstraint,
+        ExistQVars, Context, TypeClassInfoVar - MaybeTCIConstArg, Goals,
+        !Info) :-
+    trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+        some [SelectedPred, Level, IndentStr] (
+            promise_pure (
+                semipure get_selected_pred(SelectedPred),
+                semipure get_level(Level),
+                (
+                    SelectedPred = no
+                ;
+                    SelectedPred = yes,
+                    IndentStr = string.duplicate_char(' ', Level * 4),
+                    impure set_level(Level + 1),
+
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("make_typeclass_info_from_subclass", !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("Constraint: ", !IO),
+                    io.write(Constraint, !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("Seen: ", !IO),
+                    ( Seen = [Constraint] ->
+                        io.write_string("[Constraint]\n", !IO)
+                    ;
+                        io.write(Seen, !IO),
+                        io.nl(!IO)
+                    ),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("SubClassConstraint: ", !IO),
+                    io.write(SubClassConstraint, !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("ExistQVars: ", !IO),
+                    io.write(ExistQVars, !IO),
+                    io.nl(!IO),
+                    io.nl(!IO)
+                )
+            )
+        )
+    ),
+
+    % Work out where to extract the typeclass info from.
+    SubClassConstraint = constraint(SubClassName, SubClassTypes),
+    list.length(SubClassTypes, SubClassArity),
+    SubClassId = class_id(SubClassName, SubClassArity),
+
+    % Make the typeclass_info for the subclass.
+    make_typeclass_info_var(SubClassConstraint, Seen, ExistQVars, Context,
+        SubClassVarMCA, SubClassVarGoals, !Info),
+    SubClassVarMCA = SubClassVar - SubClassMCA,
+
+    % Look up the definition of the subclass.
+    poly_info_get_module_info(!.Info, ModuleInfo),
+    module_info_get_class_table(ModuleInfo, ClassTable),
+    map.lookup(ClassTable, SubClassId, SubClassDefn),
+
+    % Work out which superclass typeclass_info to take.
+    map.from_corresponding_lists(SubClassDefn ^ class_vars, SubClassTypes,
+        SubTypeSubst),
+    apply_subst_to_prog_constraint_list(SubTypeSubst,
+        SubClassDefn ^ class_supers, SuperClasses),
+    ( list.nth_member_search(SuperClasses, Constraint, SuperClassIndex0) ->
+        SuperClassIndex0 = SuperClassIndex
+    ;
+        % We shouldn't have got this far if the constraints were not satisfied.
+        unexpected($module, $pred, "constraint not in constraint list")
+    ),
+
+    (
+        SubClassMCA = yes(SubClassConstArg),
+        (
+            SubClassConstArg = csa_constant(_, _),
+            unexpected($module, $pred, "typeclass infos need a cell")
+        ;
+            SubClassConstArg = csa_const_struct(SubClassConstNum),
+            poly_info_get_const_struct_db(!.Info, ConstStructDb),
+            lookup_const_struct_num(ConstStructDb, SubClassConstNum,
+                SubClassConstStruct),
+            SubClassConstStruct = const_struct(SubClassConsId, SubClassArgs,
+                _, _),
+            (
+                SubClassConsId = typeclass_info_cell_constructor,
+                SubClassArgs = [BTCIArg | OtherArgs],
+                BTCIArg = csa_constant(BTCIConsId, _),
+                BTCIConsId = base_typeclass_info_const(_, SubClassId,
+                    SubInstanceNum, _),
+                module_info_get_instance_table(ModuleInfo, InstanceTable),
+                map.lookup(InstanceTable, SubClassId, SubInstanceDefns),
+                list.index1(SubInstanceDefns, SubInstanceNum, SubInstanceDefn),
+                num_extra_instance_args(SubInstanceDefn, NumExtra),
+                Index = NumExtra + SuperClassIndex,
+                list.det_index1(OtherArgs, Index, SelectedArg),
+                SelectedArg = csa_const_struct(SelectedConstNum)
+            ->
+                materialize_typeclass_info_var(Constraint, SelectedConstNum,
+                    TypeClassInfoVar, Goals, !Info),
+                MaybeTCIConstArg = yes(SelectedArg)
+            ;
+                unexpected($module, $pred,
+                    "unexpected typeclass info structure")
+            )
+        ),
+
+        trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+            some [SelectedPred, Level, IndentStr, ResultStr] (
+                promise_pure (
+                    semipure get_selected_pred(SelectedPred),
+                    semipure get_level(Level),
+                    impure set_level(Level - 1),
+                    (
+                        SelectedPred = no
+                    ;
+                        SelectedPred = yes,
+                        IndentStr = string.duplicate_char(' ', (Level-1) * 4),
+                        io.write_string(IndentStr, !IO),
+                        io.write_string("subclass constant result ", !IO),
+                        io.write(TypeClassInfoVar - MaybeTCIConstArg, !IO),
+                        io.nl(!IO),
+                        io.nl(!IO)
+                    )
+                )
+            )
+        )
+    ;
+        SubClassMCA = no,
+        new_typeclass_info_var(Constraint, typeclass_info_kind,
+            TypeClassInfoVar, _TypeClassInfoVarType, !Info),
+        get_poly_const(SuperClassIndex, IndexVar, IndexGoals, !Info),
+
+        % We extract the superclass typeclass_info by inserting a call
+        % to superclass_from_typeclass_info in private_builtin.
+        goal_util.generate_simple_call(mercury_private_builtin_module,
+            "superclass_from_typeclass_info",
+            pf_predicate, only_mode, detism_det, purity_pure,
+            [SubClassVar, IndexVar, TypeClassInfoVar], [],
+            instmap_delta_bind_no_var, ModuleInfo, term.context_init,
+            SuperClassGoal),
+        Goals = SubClassVarGoals ++ IndexGoals ++ [SuperClassGoal],
+        MaybeTCIConstArg = no,
+
+        trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+            some [SelectedPred, Level, IndentStr, ResultStr] (
+                promise_pure (
+                    semipure get_selected_pred(SelectedPred),
+                    semipure get_level(Level),
+                    impure set_level(Level - 1),
+                    (
+                        SelectedPred = no
+                    ;
+                        SelectedPred = yes,
+                        IndentStr = string.duplicate_char(' ', (Level-1) * 4),
+                        io.write_string(IndentStr, !IO),
+                        io.write_string("subclass computed result ", !IO),
+                        io.write(TypeClassInfoVar - MaybeTCIConstArg, !IO),
+                        io.nl(!IO),
+                        io.nl(!IO)
+                    )
+                )
+            )
+        )
+    ).
+
+:- pred make_typeclass_info_from_instance(prog_constraint::in,
+    list(prog_constraint)::in, int::in, existq_tvars::in, prog_context::in,
+    pair(prog_var, maybe(const_struct_arg))::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+make_typeclass_info_from_instance(Constraint, Seen, InstanceNum, ExistQVars,
+        Context, TypeClassInfoVarMCA, Goals, !Info) :-
+    trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+        some [SelectedPred, Level, IndentStr] (
+            promise_pure (
+                semipure get_selected_pred(SelectedPred),
+                semipure get_level(Level),
+                (
+                    SelectedPred = no
+                ;
+                    SelectedPred = yes,
+                    IndentStr = string.duplicate_char(' ', Level * 4),
+                    impure set_level(Level + 1),
+
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("make_typeclass_info_from_instance", !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("Constraint: ", !IO),
+                    io.write(Constraint, !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("Seen: ", !IO),
+                    ( Seen = [Constraint] ->
+                        io.write_string("[Constraint]\n", !IO)
+                    ;
+                        io.write(Seen, !IO),
+                        io.nl(!IO)
+                    ),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("InstanceNum: ", !IO),
+                    io.write(InstanceNum, !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("ExistQVars: ", !IO),
+                    io.write(ExistQVars, !IO),
+                    io.nl(!IO),
+                    io.nl(!IO)
+                )
+            )
+        )
+    ),
+
+    poly_info_get_const_struct_db(!.Info, ConstStructDb0),
+    InstanceId = ciid(InstanceNum, Constraint, Seen),
+    (
+        ExistQVars = [],
+        search_for_constant_instance(ConstStructDb0, InstanceId,
+            InstanceIdConstNum)
+    ->
+        materialize_typeclass_info_var(Constraint, InstanceIdConstNum,
+            TypeClassInfoVar, Goals, !Info),
+        TypeClassInfoVarMCA =
+            TypeClassInfoVar - yes(csa_const_struct(InstanceIdConstNum)),
+
+        trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+            some [SelectedPred, Level, IndentStr, ResultStr] (
+                promise_pure (
+                    semipure get_selected_pred(SelectedPred),
+                    semipure get_level(Level),
+                    impure set_level(Level - 1),
+                    (
+                        SelectedPred = no
+                    ;
+                        SelectedPred = yes,
+                        IndentStr = string.duplicate_char(' ', (Level-1) * 4),
+                        (
+                            Goals = [],
+                            ResultStr = "instance doubly cached result "
+                        ;
+                            Goals = [_ | _],
+                            ResultStr = "instance cached result "
+                        ),
+
+                        io.write_string(IndentStr, !IO),
+                        io.write_string(ResultStr, !IO),
+                        io.write(TypeClassInfoVarMCA, !IO),
+                        io.nl(!IO),
+                        io.nl(!IO)
+                    )
+                )
+            )
+        )
+    ;
+        do_make_typeclass_info_from_instance(InstanceId, ExistQVars,
+            Context, TypeClassInfoVarMCA, Goals, !Info),
+        trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+            some [SelectedPred, Level, IndentStr] (
+                promise_pure (
+                    semipure get_selected_pred(SelectedPred),
+                    semipure get_level(Level),
+                    impure set_level(Level - 1),
+                    (
+                        SelectedPred = no
+                    ;
+                        SelectedPred = yes,
+                        IndentStr = string.duplicate_char(' ', (Level-1) * 4),
+                        io.write_string(IndentStr, !IO),
+                        io.write_string("instance computed result: ", !IO),
+                        io.write(TypeClassInfoVarMCA, !IO),
+                        io.nl(!IO),
+
+                        io.write_string(IndentStr, !IO),
+                        io.write_string("type_info_var_map ", !IO),
+                        io.write(!.Info ^ poly_type_info_var_map, !IO),
+                        io.nl(!IO),
+                        io.write_string(IndentStr, !IO),
+                        io.write_string("typeclass_info_map ", !IO),
+                        io.write(!.Info ^ poly_typeclass_info_map, !IO),
+                        io.nl(!IO),
+                        io.write_string(IndentStr, !IO),
+                        io.write_string("struct_var_map ", !IO),
+                        io.write(!.Info ^ poly_const_struct_var_map, !IO),
+                        io.nl(!IO),
+                        io.nl(!IO)
+                    )
+                )
+            )
+        )
+    ).
+
+:- pred do_make_typeclass_info_from_instance(const_instance_id::in,
+    existq_tvars::in, prog_context::in,
+    pair(prog_var, maybe(const_struct_arg))::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+do_make_typeclass_info_from_instance(InstanceId, ExistQVars, Context,
+        TypeClassInfoVarMCA, Goals, !Info) :-
+    poly_info_get_module_info(!.Info, ModuleInfo),
+    module_info_get_instance_table(ModuleInfo, InstanceTable),
+    module_info_get_class_table(ModuleInfo, ClassTable),
+    poly_info_get_typevarset(!.Info, TypeVarSet),
+    poly_info_get_proofs(!.Info, Proofs0),
+
+    InstanceId = ciid(InstanceNum, Constraint, Seen),
+    Constraint = constraint(ClassName, ConstrainedTypes),
+
+    list.length(ConstrainedTypes, ClassArity),
+    ClassId = class_id(ClassName, ClassArity),
+
+    map.lookup(InstanceTable, ClassId, InstanceList),
+    list.det_index1(InstanceList, InstanceNum, ProofInstanceDefn),
+
+    ProofInstanceDefn = hlds_instance_defn(_, _, _, InstanceConstraints,
+        InstanceTypes, _, _, _, InstanceTVarset, InstanceProofs),
+
+    % XXX kind inference:
+    % we assume all tvars have kind `star'.
+    map.init(KindMap),
+
+    type_vars_list(InstanceTypes, InstanceTvars),
+    get_unconstrained_tvars(InstanceTvars, InstanceConstraints,
+        UnconstrainedTvars),
+
+    % We can ignore the new typevarset because all the type variables
+    % in the instance constraints and superclass proofs must appear
+    % in the arguments of the instance, and all such variables
+    % are bound when we call type_list_subsumes then apply
+    % the resulting bindings.
+    tvarset_merge_renaming(TypeVarSet, InstanceTVarset, _NewTVarset, Renaming),
+    apply_variable_renaming_to_type_list(Renaming, InstanceTypes,
+        RenamedInstanceTypes),
+    type_list_subsumes_det(RenamedInstanceTypes, ConstrainedTypes,
+        InstanceSubst),
+    apply_variable_renaming_to_prog_constraint_list(Renaming,
+        InstanceConstraints, RenamedInstanceConstraints),
+    apply_rec_subst_to_prog_constraint_list(InstanceSubst,
+        RenamedInstanceConstraints, ActualInstanceConstraints0),
+    % XXX document diamond as guess
+    % XXX does anyone know what the preceding line means?
+    list.delete_elems(ActualInstanceConstraints0, Seen,
+        ActualInstanceConstraints),
+    apply_variable_renaming_to_constraint_proofs(Renaming,
+        InstanceProofs, RenamedInstanceProofs),
+    apply_rec_subst_to_constraint_proofs(InstanceSubst,
+        RenamedInstanceProofs, ActualInstanceProofs),
+
+    apply_variable_renaming_to_tvar_list(Renaming, UnconstrainedTvars,
+        RenamedUnconstrainedTvars),
+    apply_variable_renaming_to_tvar_kind_map(Renaming, KindMap,
+        RenamedKindMap),
+    apply_rec_subst_to_tvar_list(RenamedKindMap, InstanceSubst,
+        RenamedUnconstrainedTvars, ActualUnconstrainedTypes),
+
+    map.overlay(Proofs0, ActualInstanceProofs, Proofs),
+
+    get_var_maps_snapshot("make_typeclass_info_from_instance",
+        InitialVarMapsSnapshot, !Info),
+
+    % Make the type_infos for the types that are constrained by this.
+    % These are packaged in the typeclass_info.
+    polymorphism_do_make_type_info_vars(ConstrainedTypes, Context,
+        ArgTypeInfoVarsMCAs, TypeInfoGoals, !Info),
+
+    % Make the typeclass_infos for the constraints from the context of the
+    % instance decl.
+    make_typeclass_info_vars_2(ActualInstanceConstraints, Seen, ExistQVars,
+        Context, ArgTypeClassInfoVarsMCAs, InstanceConstraintGoals, !Info),
+
+    % Make the type_infos for the unconstrained type variables
+    % from the head of the instance declaration.
+    polymorphism_do_make_type_info_vars(ActualUnconstrainedTypes, Context,
+        ArgUnconstrainedTypeInfoVarsMCAs, UnconstrainedTypeInfoGoals, !Info),
+
+    % --------------------- %
+
+    map.lookup(ClassTable, ClassId, ClassDefn),
+
+    get_arg_superclass_vars(ClassDefn, ConstrainedTypes, Proofs,
+        ExistQVars, ArgSuperClassVarsMCAs, SuperClassGoals, !Info),
+
+    PrevGoals = UnconstrainedTypeInfoGoals ++ TypeInfoGoals ++
+        InstanceConstraintGoals ++ SuperClassGoals,
+    % Lay out the argument variables as expected in the typeclass_info.
+    ArgVarsMCAs = ArgUnconstrainedTypeInfoVarsMCAs ++
+        ArgTypeClassInfoVarsMCAs ++
+        ArgSuperClassVarsMCAs ++ ArgTypeInfoVarsMCAs,
+    list.map(make_const_or_var_arg, ArgVarsMCAs, ArgCOVAs),
+
+    Constraint = constraint(ConstraintClassName, ConstraintArgTypes),
+    poly_info_get_typeclass_info_map(!.Info, TypeClassInfoMap0),
+    (
+        map.search(TypeClassInfoMap0, ConstraintClassName, ClassNameMap0),
+        map.search(ClassNameMap0, ConstraintArgTypes, OldEntry0),
+        OldEntry0 = typeclass_info_map_entry(_BaseConsId, ArgsMap0),
+        map.search(ArgsMap0, ArgCOVAs, OldTypeClassInfoVarMCA0)
+    ->
+        TypeClassInfoVarMCA = OldTypeClassInfoVarMCA0,
+        Goals = [],
+        set_var_maps_snapshot("make_typeclass_info",
+            InitialVarMapsSnapshot, !Info),
+        poly_info_get_num_reuses(!.Info, NumReuses),
+        poly_info_set_num_reuses(NumReuses + 2, !Info)
+    ;
+        BaseConsId = base_typeclass_info_cons_id(InstanceTable,
+            Constraint, InstanceNum, InstanceTypes),
+        materialize_base_typeclass_info_var(Constraint, BaseConsId, BaseVar,
+            BaseGoals, !Info),
+        construct_typeclass_info(Constraint, BaseVar, BaseConsId, ArgVarsMCAs,
+            InitialVarMapsSnapshot, TypeClassInfoVar, TypeClassInfoMCA,
+            BaseGoals ++ PrevGoals, Goals, !Info),
+        TypeClassInfoVarMCA = TypeClassInfoVar - TypeClassInfoMCA,
+
+        % We must start the search from scratch, since construct_typeclass_info
+        % may have reset all the cache maps.
+        poly_info_get_typeclass_info_map(!.Info, TypeClassInfoMap1),
+        ( map.search(TypeClassInfoMap1, ConstraintClassName, ClassNameMap1) ->
+            ( map.search(ClassNameMap1, ConstraintArgTypes, OldEntry1) ->
+                OldEntry1 = typeclass_info_map_entry(BaseConsId1, ArgsMap1),
+                expect(unify(BaseConsId1, BaseConsId), $module, $pred,
+                    "BaseConsId1 != BaseConsId"),
+                map.det_insert(ArgCOVAs, TypeClassInfoVarMCA,
+                    ArgsMap1, ArgsMap),
+                Entry = typeclass_info_map_entry(BaseConsId, ArgsMap),
+                map.det_update(ConstraintArgTypes, Entry,
+                    ClassNameMap1, ClassNameMap),
+                map.det_update(ConstraintClassName, ClassNameMap,
+                    TypeClassInfoMap1, TypeClassInfoMap)
+            ;
+                ArgsMap = map.singleton(ArgCOVAs, TypeClassInfoVarMCA),
+                Entry = typeclass_info_map_entry(BaseConsId, ArgsMap),
+                map.det_insert(ConstraintArgTypes, Entry,
+                    ClassNameMap1, ClassNameMap),
+                map.det_update(ConstraintClassName, ClassNameMap,
+                    TypeClassInfoMap1, TypeClassInfoMap)
+            )
+        ;
+            ArgsMap = map.singleton(ArgCOVAs, TypeClassInfoVarMCA),
+            Entry = typeclass_info_map_entry(BaseConsId, ArgsMap),
+            ClassNameMap = map.singleton(ConstraintArgTypes, Entry),
+            map.det_insert(ConstraintClassName, ClassNameMap,
+                TypeClassInfoMap1, TypeClassInfoMap)
+        ),
+        poly_info_set_typeclass_info_map(TypeClassInfoMap, !Info)
+    ),
+
+    (
+        TypeClassInfoVarMCA = _ - yes(TypeClassInfoConstArg),
+        TypeClassInfoConstArg = csa_const_struct(TypeClassInfoConstArgNum)
+    ->
+        poly_info_get_const_struct_db(!.Info, ConstStructDb1),
+        insert_constant_instance(InstanceId, TypeClassInfoConstArgNum,
+            ConstStructDb1, ConstStructDb),
+        poly_info_set_const_struct_db(ConstStructDb, !Info)
+    ;
+        true
+    ).
+
+:- pred construct_typeclass_info(prog_constraint::in,
+    prog_var::in, cons_id::in,
+    assoc_list(prog_var, maybe(const_struct_arg))::in, var_maps::in,
+    prog_var::out, maybe(const_struct_arg)::out,
+    list(hlds_goal)::in, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+construct_typeclass_info(Constraint, BaseVar, BaseConsId, ArgVarsMCAs,
+        InitialVarMapsSnapshot, TypeClassInfoVar, TypeClassInfoMCA,
+        PrevGoals, AllGoals, !Info) :-
+    % Build a unification to add the argvars to the base_typeclass_info.
+    ConsId = typeclass_info_cell_constructor,
+
+    poly_info_get_const_struct_db(!.Info, ConstStructDb0),
+    const_struct_db_get_poly_enabled(ConstStructDb0, ConstStructEnabled),
+    (
+        ConstStructEnabled = yes,
+        all_are_const_struct_args(ArgVarsMCAs, VarConstArgs)
+    ->
+        poly_info_get_num_reuses(!.Info, NumReuses),
+        poly_info_set_num_reuses(NumReuses + 1, !Info),
+
+        set_var_maps_snapshot("construct_typeclass_info",
+            InitialVarMapsSnapshot, !Info),
+        new_typeclass_info_var(Constraint, typeclass_info_kind,
+            TypeClassInfoVar, TypeClassInfoVarType, !Info),
+
+        build_typeclass_info_type(Constraint, BaseConstArgType),
+        BaseConstArg = csa_constant(BaseConsId, BaseConstArgType),
+        StructArgs = [BaseConstArg | VarConstArgs],
+        list.map(get_inst_of_const_struct_arg(ConstStructDb0),
+            VarConstArgs, VarInsts),
+        list.length(ArgVarsMCAs, NumArgs),
+        InstConsId = cell_inst_cons_id(typeclass_info_cell, NumArgs),
+        StructInst = bound(shared, inst_test_results_fgtc,
+            [bound_functor(InstConsId, VarInsts)]),
+        ConstStruct = const_struct(ConsId, StructArgs,
+            TypeClassInfoVarType, StructInst),
+        lookup_insert_const_struct(ConstStruct, ConstNum,
+            ConstStructDb0, ConstStructDb),
+        poly_info_set_const_struct_db(ConstStructDb, !Info),
+        TypeClassInfoConstArg = csa_const_struct(ConstNum),
+        TypeClassInfoMCA = yes(TypeClassInfoConstArg),
+
+        % Create the construction unification to initialize the variable.
+        ConstConsId = typeclass_info_const(ConstNum),
+        Unification = construct(TypeClassInfoVar, ConstConsId, [], [],
+            construct_statically, cell_is_shared, no_construct_sub_info),
+        UnifyMode = (free -> ground(shared, none)) -
+            (ground(shared, none) -> ground(shared, none)),
+        % XXX The UnifyContext is wrong.
+        UnifyContext = unify_context(umc_explicit, []),
+        TypeClassInfoRHS = rhs_functor(ConstConsId, no, []),
+        GoalExpr = unify(TypeClassInfoVar, TypeClassInfoRHS, UnifyMode,
+            Unification, UnifyContext),
+
+        % Create a goal_info for the unification.
+        goal_info_init(GoalInfo0),
+        NonLocals = set_of_var.make_singleton(TypeClassInfoVar),
+        goal_info_set_nonlocals(NonLocals, GoalInfo0, GoalInfo1),
+        % Note that we could perhaps be more accurate than `ground(shared)',
+        % but it shouldn't make any difference.
+        InstResults = inst_test_results(inst_result_is_ground,
+            inst_result_does_not_contain_any,
+            inst_result_contains_instnames_known(set.init),
+            inst_result_contains_types_known(set.init)),
+        TypeClassInfoInst = bound(shared, InstResults,
+            [bound_functor(ConsId, [])]),
+        TypeClassInfoVarInst = TypeClassInfoVar - TypeClassInfoInst,
+        InstMapDelta = instmap_delta_from_assoc_list([TypeClassInfoVarInst]),
+        goal_info_set_instmap_delta(InstMapDelta, GoalInfo1, GoalInfo2),
+        goal_info_set_determinism(detism_det, GoalInfo2, GoalInfo),
+
+        Goal = hlds_goal(GoalExpr, GoalInfo),
+        % XXX reset varset and vartypes
+        AllGoals = [Goal]
+    ;
+        TypeClassInfoMCA = no,
+        new_typeclass_info_var(Constraint, typeclass_info_kind,
+            TypeClassInfoVar, _TypeClassInfoVarType, !Info),
+        assoc_list.keys(ArgVarsMCAs, ArgVars),
+        AllArgVars = [BaseVar | ArgVars],
+
+        % Create the construction unification to initialize the variable.
+        TypeClassInfoRHS = rhs_functor(ConsId, no, AllArgVars),
+        UniMode = (free - ground(shared, none) ->
+            ground(shared, none) - ground(shared, none)),
+        list.length(AllArgVars, NumArgs),
+        list.duplicate(NumArgs, UniMode, UniModes),
+        Unification = construct(TypeClassInfoVar, ConsId, AllArgVars, UniModes,
+            construct_dynamically, cell_is_unique, no_construct_sub_info),
+        UnifyMode = (free -> ground(shared, none)) -
+            (ground(shared, none) -> ground(shared, none)),
+        UnifyContext = unify_context(umc_explicit, []),
+        % XXX The UnifyContext is wrong.
+        GoalExpr = unify(TypeClassInfoVar, TypeClassInfoRHS, UnifyMode,
+            Unification, UnifyContext),
+
+        % Create a goal_info for the unification.
+        goal_info_init(GoalInfo0),
+        set_of_var.list_to_set([TypeClassInfoVar | AllArgVars], NonLocals),
+        goal_info_set_nonlocals(NonLocals, GoalInfo0, GoalInfo1),
+        list.duplicate(NumArgs, ground(shared, none), ArgInsts),
+        % Note that we could perhaps be more accurate than `ground(shared)',
+        % but it shouldn't make any difference.
+        InstConsId = cell_inst_cons_id(typeclass_info_cell, NumArgs),
+        InstResults = inst_test_results(inst_result_is_ground,
+            inst_result_does_not_contain_any,
+            inst_result_contains_instnames_known(set.init),
+            inst_result_contains_types_unknown),
+        % XXX that should be inst_result_contains_types_known(set.init),
+        TypeClassInfoInst = bound(unique, InstResults,
+            [bound_functor(InstConsId, ArgInsts)]),
+        TypeClassInfoVarInst = TypeClassInfoVar - TypeClassInfoInst,
+        InstMapDelta = instmap_delta_from_assoc_list([TypeClassInfoVarInst]),
+        goal_info_set_instmap_delta(InstMapDelta, GoalInfo1, GoalInfo2),
+        goal_info_set_determinism(detism_det, GoalInfo2, GoalInfo),
+
+        Goal = hlds_goal(GoalExpr, GoalInfo),
+        AllGoals = PrevGoals ++ [Goal]
+    ).
+
+%---------------------------------------------------------------------------%
+
+:- pred get_arg_superclass_vars(hlds_class_defn::in, list(mer_type)::in,
+    constraint_proof_map::in, existq_tvars::in,
+    assoc_list(prog_var, maybe(const_struct_arg))::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+get_arg_superclass_vars(ClassDefn, InstanceTypes, SuperClassProofs, ExistQVars,
+        SuperClassTypeClassInfoVarsMCAs, SuperClassGoals, !Info) :-
+    poly_info_get_proofs(!.Info, Proofs),
+
+    poly_info_get_typevarset(!.Info, TVarSet0),
+    SuperClasses0 = ClassDefn ^ class_supers,
+    ClassVars0 = ClassDefn ^ class_vars,
+    ClassTVarSet = ClassDefn ^ class_tvarset,
+    tvarset_merge_renaming(TVarSet0, ClassTVarSet, TVarSet1, Renaming),
+    poly_info_set_typevarset(TVarSet1, !Info),
+
+    apply_variable_renaming_to_tvar_list(Renaming, ClassVars0, ClassVars),
+    map.from_corresponding_lists(ClassVars, InstanceTypes, TypeSubst),
+
+    apply_variable_renaming_to_prog_constraint_list(Renaming,
+        SuperClasses0, SuperClasses1),
+    apply_rec_subst_to_prog_constraint_list(TypeSubst,
+        SuperClasses1, SuperClasses),
+
+    poly_info_set_proofs(SuperClassProofs, !Info),
+    make_superclasses_from_proofs(SuperClasses, ExistQVars,
+        SuperClassTypeClassInfoVarsMCAs, SuperClassGoals, !Info),
+    poly_info_set_proofs(Proofs, !Info).
+
+:- pred make_superclasses_from_proofs(list(prog_constraint)::in,
+    existq_tvars::in, assoc_list(prog_var, maybe(const_struct_arg))::out,
+    list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+make_superclasses_from_proofs([], _, [], [], !Info).
+make_superclasses_from_proofs([Constraint | Constraints], ExistQVars,
+        [TypeClassInfoVarMCA | TypeClassInfoVarsMCAs], Goals, !Info) :-
+    term.context_init(Context),
+    make_typeclass_info_var(Constraint, [], ExistQVars, Context,
+        TypeClassInfoVarMCA, HeadGoals, !Info),
+    make_superclasses_from_proofs(Constraints, ExistQVars,
+        TypeClassInfoVarsMCAs, TailGoals, !Info),
+    Goals = HeadGoals ++ TailGoals.
+
+%-----------------------------------------------------------------------------%
+
+    % Produce the typeclass_infos for the existential class constraints
+    % for a call or deconstruction unification.
+    %
+:- pred make_existq_typeclass_info_vars(list(prog_constraint)::in,
+    list(prog_var)::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+make_existq_typeclass_info_vars(ExistentialConstraints, ExtraTypeClassVars,
+        ExtraGoals, !Info) :-
+    poly_info_get_rtti_varmaps(!.Info, OldRttiVarMaps),
+    make_typeclass_info_head_vars(do_record_type_info_locns,
+        ExistentialConstraints, ExtraTypeClassVars, !Info),
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+    list.foldl(rtti_reuse_typeclass_info_var, ExtraTypeClassVars,
+        RttiVarMaps0, RttiVarMaps),
+    poly_info_set_rtti_varmaps(RttiVarMaps, !Info),
+
+    constraint_list_get_tvars(ExistentialConstraints, TVars0),
+    list.sort_and_remove_dups(TVars0, TVars),
+    list.foldl2(polymorphism_maybe_extract_type_info(OldRttiVarMaps), TVars,
+        [], ExtraGoals, !Info).
+
+    % For code which requires mode reordering, we may have already seen uses
+    % of some of the type variables produced by this call. At the point of the
+    % use of a type variable that we haven't seen before, we assume that it is
+    % unconstrained. If it turns out that the type variable is constrained,
+    % and the type_info is contained in a typeclass_info, we need to generate
+    % code to extract it here.
+    %
+:- pred polymorphism_maybe_extract_type_info(rtti_varmaps::in, tvar::in,
+    list(hlds_goal)::in, list(hlds_goal)::out, poly_info::in, poly_info::out)
+    is det.
+
+polymorphism_maybe_extract_type_info(OldRttiVarMaps, TVar, !ExtraGoals,
+        !Info) :-
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps),
+    (
+        rtti_search_type_info_locn(OldRttiVarMaps, TVar,
+            type_info(TypeInfoVar0)),
+        rtti_search_type_info_locn(RttiVarMaps, TVar,
+            typeclass_info(TypeClassInfoVar, Index))
+    ->
+        polymorphism_extract_type_info(TVar, TypeClassInfoVar, Index, NewGoals,
+            TypeInfoVar1, !Info),
+        assign_var(TypeInfoVar0, TypeInfoVar1, AssignGoal),
+        !:ExtraGoals = NewGoals ++ [AssignGoal | !.ExtraGoals]
+    ;
+        true
+    ).
+
+%---------------------------------------------------------------------------%
+
+polymorphism_make_type_info_vars(Types, Context, ExtraVars,
+        ExtraGoals, !Info) :-
+    polymorphism_do_make_type_info_vars(Types, Context, ExtraVarsMCAs,
+        ExtraGoals, !Info),
+    assoc_list.keys(ExtraVarsMCAs, ExtraVars).
+
+polymorphism_make_type_info_var(Type, Context, ExtraVar, ExtraGoals, !Info) :-
+    polymorphism_do_make_type_info_var(Type, Context, ExtraVarMCA,
+        ExtraGoals, !Info),
+    ExtraVarMCA = ExtraVar - _.
+
+:- pred polymorphism_do_make_type_info_vars(list(mer_type)::in,
+    term.context::in,
+    assoc_list(prog_var, maybe(const_struct_arg))::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+polymorphism_do_make_type_info_vars([], _, [], [], !Info).
+polymorphism_do_make_type_info_vars([Type | Types], Context,
+        VarsMCAs, Goals, !Info) :-
+    polymorphism_do_make_type_info_var(Type, Context, HeadVarMCA,
+        HeadGoals, !Info),
+    polymorphism_do_make_type_info_vars(Types, Context, TailVarsMCAs,
+        TailGoals, !Info),
+    VarsMCAs = [HeadVarMCA | TailVarsMCAs],
+    Goals = HeadGoals ++ TailGoals.
+
+:- pred polymorphism_do_make_type_info_var(mer_type::in, term.context::in,
+    pair(prog_var, maybe(const_struct_arg))::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+polymorphism_do_make_type_info_var(Type, Context, VarMCA, ExtraGoals, !Info) :-
+    % First handle statically known types (i.e. types which are not
+    % type variables).
+    ( type_has_variable_arity_ctor(Type, TypeCtor, TypeArgs) ->
+        % This occurs for code where a predicate calls a polymorphic predicate
+        % with a type whose type constructor is of variable arity. The
+        % transformation we perform is basically the same as in the usual case
+        % below, except that we map pred types to pred/0, func types to func/0
+        % and tuple types to tuple/0 for the purposes of creating type_infos.
+        % To allow univ_to_type to check the type_infos correctly, the actual
+        % arity is added to the type_info we create.
+        %
+        % XXX FIXME (RTTI for higher order impure code)
+        % we should not ignore the purity of higher order procs;
+        % it should get included in the RTTI.
+        polymorphism_make_type_info(Type, TypeCtor, TypeArgs, yes,
+            Context, VarMCA, ExtraGoals, !Info)
+    ;
+        (
+            ( Type = defined_type(_, _, _)
+            ; Type = builtin_type(_)
+            ; Type = tuple_type(_, _)
+            ; Type = higher_order_type(_,_, _, _)
+            ; Type = apply_n_type(_, _, _)
+            ; Type = kinded_type(_, _)
+            ),
+            type_to_ctor_and_args_det(Type, TypeCtor, TypeArgs),
+            % This occurs for code where a predicate calls a polymorphic
+            % predicate with a known value of the type variable. The
+            % transformation we perform is shown in the comment at the top
+            % of the module.
+            polymorphism_make_type_info(Type, TypeCtor, TypeArgs, no,
+                Context, VarMCA, ExtraGoals, !Info)
+        ;
+            % Now handle the cases of types which are not known statically,
+            % i.e. type variables.
+            Type = type_variable(TypeVar, _),
+            get_type_info_locn(TypeVar, TypeInfoLocn, !Info),
+            get_type_info_from_locn(TypeVar, TypeInfoLocn, Var, ExtraGoals,
+                !Info),
+            VarMCA = Var - no
+        )
+    ).
+
+:- pred polymorphism_make_type_info(mer_type::in, type_ctor::in,
+    list(mer_type)::in, bool::in, prog_context::in,
+    pair(prog_var, maybe(const_struct_arg))::out,
+    list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+polymorphism_make_type_info(Type, TypeCtor, TypeArgs, TypeCtorIsVarArity,
+        Context, TypeInfoVarMCA, ExtraGoals, !Info) :-
+    poly_info_get_type_info_var_map(!.Info, TypeInfoVarMap0),
+    (
+        map.search(TypeInfoVarMap0, TypeCtor, TypeCtorVarMap0),
+        map.search(TypeCtorVarMap0, TypeArgs, OldTypeInfoVarMCA)
+    ->
+        poly_info_get_num_reuses(!.Info, NumReuses),
+        poly_info_set_num_reuses(NumReuses + 1, !Info),
+        TypeInfoVarMCA = OldTypeInfoVarMCA,
+        ExtraGoals = []
+    ;
+        polymorphism_construct_type_info(Type, TypeCtor, TypeArgs,
+            TypeCtorIsVarArity, Context, TypeInfoVar, TypeInfoConstArg,
+            ExtraGoals, !Info),
+        TypeInfoVarMCA = TypeInfoVar - TypeInfoConstArg,
+        % We have to get the type_info_var_map again since the call just above
+        % could have added relevant new entries to it.
+        poly_info_get_type_info_var_map(!.Info, TypeInfoVarMap1),
+        ( map.search(TypeInfoVarMap1, TypeCtor, TypeCtorVarMap1) ->
+            map.det_insert(TypeArgs, TypeInfoVarMCA,
+                TypeCtorVarMap1, TypeCtorVarMap),
+            map.det_update(TypeCtor, TypeCtorVarMap,
+                TypeInfoVarMap1, TypeInfoVarMap)
+        ;
+            TypeCtorVarMap = map.singleton(TypeArgs, TypeInfoVarMCA),
+            map.det_insert(TypeCtor, TypeCtorVarMap,
+                TypeInfoVarMap1, TypeInfoVarMap)
+        ),
+        poly_info_set_type_info_var_map(TypeInfoVarMap, !Info)
+    ).
+
+:- pred polymorphism_construct_type_info(mer_type::in, type_ctor::in,
+    list(mer_type)::in, bool::in, prog_context::in,
+    prog_var::out, maybe(const_struct_arg)::out,
+    list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+polymorphism_construct_type_info(Type, TypeCtor, TypeArgs, TypeCtorIsVarArity,
+        Context, Var, MCA, ExtraGoals, !Info) :-
+    get_var_maps_snapshot("polymorphism_construct_type_info",
+        InitialVarMapsSnapshot, !Info),
+
+    % Create the typeinfo vars for the arguments.
+    polymorphism_do_make_type_info_vars(TypeArgs, Context,
+        ArgTypeInfoVarsMCAs, ArgTypeInfoGoals, !Info),
+
+    poly_info_get_varset(!.Info, VarSet0),
+    poly_info_get_var_types(!.Info, VarTypes0),
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+
+    TypeCtorConsId = type_ctor_info_cons_id(TypeCtor),
+    TypeCtorConsIdConstArg = csa_constant(TypeCtorConsId, type_info_type),
+    poly_info_get_const_struct_var_map(!.Info, ConstStructVarMap0),
+    ( map.search(ConstStructVarMap0, TypeCtorConsIdConstArg, OldTypeCtorVar) ->
+        poly_info_get_num_reuses(!.Info, NumReuses),
+        poly_info_set_num_reuses(NumReuses + 1, !Info),
+        TypeCtorVar = OldTypeCtorVar,
+        TypeCtorGoals = [],
+        VarSet1 = VarSet0,
+        VarTypes1 = VarTypes0,
+        RttiVarMaps1 = RttiVarMaps0
+    ;
+        init_const_type_ctor_info_var_from_cons_id(Type, TypeCtorConsId,
+            TypeCtorVar, TypeCtorGoal, VarSet0, VarSet1, VarTypes0, VarTypes1,
+            RttiVarMaps0, RttiVarMaps1),
+        TypeCtorGoals = [TypeCtorGoal],
+        map.det_insert(TypeCtorConsIdConstArg, TypeCtorVar,
+            ConstStructVarMap0, ConstStructVarMap1),
+        poly_info_set_const_struct_var_map(ConstStructVarMap1, !Info)
+    ),
+
+    poly_info_set_varset_and_types(VarSet1, VarTypes1, !Info),
+    poly_info_set_rtti_varmaps(RttiVarMaps1, !Info),
+
+    % The rest of this predicate create code that constructs the second cell
+    % of a type_info for Type if we need a second cell for Type. This cell
+    % will usually be of the form:
+    %
+    %   TypeInfoVar = type_info(TypeCtorVar, ArgTypeInfoVars...)
+    %
+    % However, if TypeCtorIsVarArity is true, then it will be of the form
+    %
+    %   TypeInfoVar = type_info(TypeCtorVar, Arity, ArgTypeInfoVars...)
+    %
+    % TypeCtorVar should be the variable holding the type_ctor_info for the
+    % principal type constructor of Type, and TypeCtorIsVarArity should be
+    % true iff the type constructor it represents has a variable arity.
+    %
+    % ArgTypeInfoVars should be variables holding the type_infos (or
+    % type_ctor_infos for zero-arity types) of the argument types of Type.
+    %
+    % The returned Var will be bound to the type_info cell of Type if such
+    % a cell had to be allocated, and to the type_ctor_info of Type's only
+    % type constructor if it didn't.
+
+    (
+        % Unfortunately, if the type's type constructor has variable arity,
+        % we cannot use a one-cell representation for that type.
+        TypeCtorIsVarArity = no,
+        ArgTypeInfoVarsMCAs = []
+    ->
+        % We do not need a second cell for a separate typeinfo; we will use
+        % the type_ctor_info as the type_info.
+
+        % Since this type_ctor_info is pretending to be a type_info,
+        % we need to adjust its type. We handle type_ctor_info_const cons_ids
+        % specially to make sure that this causes no problems.
+        TypeInfoType = type_info_type,
+        Var = TypeCtorVar,
+        TypeCtorConstArg = csa_constant(TypeCtorConsId, type_info_type),
+        MCA = yes(TypeCtorConstArg),
+        ExtraGoals = ArgTypeInfoGoals ++ TypeCtorGoals,
+        update_var_type(TypeCtorVar, TypeInfoType, VarTypes1, VarTypes),
+        poly_info_set_varset_and_types(VarSet1, VarTypes, !Info)
+    ;
+        % We do need a second cell for a separate typeinfo.
+        Cell = type_info_cell(TypeCtor),
+        ConsId = cell_cons_id(Cell),
+
+        poly_info_get_const_struct_db(!.Info, ConstStructDb0),
+        const_struct_db_get_poly_enabled(ConstStructDb0, Enabled),
+        (
+            Enabled = yes,
+            all_are_const_struct_args(ArgTypeInfoVarsMCAs,
+                ArgTypeInfoConstArgs)
+        ->
+            TypeCtorConstArg = csa_constant(TypeCtorConsId, type_info_type),
+            TypeCtorInst = bound(shared, inst_test_results_fgtc,
+                [bound_functor(TypeCtorConsId, [])]),
+            list.map(get_inst_of_const_struct_arg(ConstStructDb0),
+                ArgTypeInfoConstArgs, ArgTypeInfoInsts),
+            (
+                TypeCtorIsVarArity = yes,
+                list.length(ArgTypeInfoVarsMCAs, ActualArity),
+                ArityConstArg = csa_constant(int_const(ActualArity), int_type),
+                ArityInst = bound(shared, inst_test_results_fgtc,
+                    [bound_functor(int_const(ActualArity), [])]),
+                StructConstArgs =
+                    [TypeCtorConstArg, ArityConstArg | ArgTypeInfoConstArgs],
+                StructArgInsts = [TypeCtorInst, ArityInst | ArgTypeInfoInsts]
+            ;
+                TypeCtorIsVarArity = no,
+                StructConstArgs = [TypeCtorConstArg | ArgTypeInfoConstArgs],
+                StructArgInsts = [TypeCtorInst | ArgTypeInfoInsts]
+            ),
+            StructType = type_info_type,
+            list.length(ArgTypeInfoConstArgs, NumArgs),
+            InstConsId = cell_inst_cons_id(Cell, NumArgs),
+            StructInst = bound(shared, inst_test_results_fgtc,
+                [bound_functor(InstConsId, StructArgInsts)]),
+
+            ConstStruct = const_struct(ConsId, StructConstArgs,
+                StructType, StructInst),
+            lookup_insert_const_struct(ConstStruct, ConstNum,
+                ConstStructDb0, ConstStructDb),
+            MCA = yes(csa_const_struct(ConstNum)),
+            poly_info_set_const_struct_db(ConstStructDb, !Info),
+
+            set_var_maps_snapshot("maybe_init_second_cell",
+                InitialVarMapsSnapshot, !Info),
+
+            new_type_info_var(Type, type_info, Var, !Info),
+            Unification = construct(Var, type_info_const(ConstNum),
+                [], [], construct_statically, cell_is_shared,
+                no_construct_sub_info),
+            UnifyMode = (free -> ground(shared, none)) -
+                (ground(shared, none) -> ground(shared, none)),
+            UnifyContext = unify_context(umc_explicit, []),
+            % XXX The UnifyContext is wrong.
+            TypeInfoRHS = rhs_functor(type_info_const(ConstNum), no, []),
+            Unify = unify(Var, TypeInfoRHS, UnifyMode, Unification,
+                UnifyContext),
+
+            % Create a goal_info for the unification.
+            NonLocals = set_of_var.make_singleton(Var),
+            % Note that we could be more accurate than `ground(shared)',
+            % but it shouldn't make any difference.
+            InstResults = inst_test_results(inst_result_is_ground,
+                inst_result_does_not_contain_any,
+                inst_result_contains_instnames_known(set.init),
+                inst_result_contains_types_known(set.init)),
+            VarInst = bound(shared, InstResults,
+                [bound_functor(InstConsId, [])]),
+            InstMapDelta = instmap_delta_from_assoc_list([Var - VarInst]),
+            goal_info_init(NonLocals, InstMapDelta, detism_det, purity_pure,
+                GoalInfo),
+            TypeInfoGoal = hlds_goal(Unify, GoalInfo),
+            ExtraGoals = [TypeInfoGoal]
+        ;
+            assoc_list.keys(ArgTypeInfoVarsMCAs, ArgTypeInfoVars),
+            (
+                TypeCtorIsVarArity = yes,
+                list.length(ArgTypeInfoVars, ActualArity),
+                get_poly_const(ActualArity, ArityVar, ArityGoals, !Info),
+                % The call get_poly_const may (and probably will) allocate
+                % a variable, so VarSet1, VarTypes1 and RttiVarMaps1 are
+                % all out of date.
+                poly_info_get_varset(!.Info, VarSet2),
+                poly_info_get_var_types(!.Info, VarTypes2),
+                poly_info_get_rtti_varmaps(!.Info, RttiVarMaps2),
+                init_type_info_var(Type,
+                    [TypeCtorVar, ArityVar | ArgTypeInfoVars],
+                    no, Var, TypeInfoGoal,
+                    VarSet2, VarSet, VarTypes2, VarTypes,
+                    RttiVarMaps2, RttiVarMaps),
+                ExtraGoals = TypeCtorGoals ++ ArityGoals ++ ArgTypeInfoGoals
+                    ++ [TypeInfoGoal]
+            ;
+                TypeCtorIsVarArity = no,
+                init_type_info_var(Type, [TypeCtorVar | ArgTypeInfoVars],
+                    no, Var, TypeInfoGoal,
+                    VarSet1, VarSet, VarTypes1, VarTypes,
+                    RttiVarMaps1, RttiVarMaps),
+                ExtraGoals = TypeCtorGoals ++ ArgTypeInfoGoals ++
+                    [TypeInfoGoal]
+            ),
+            poly_info_set_varset_and_types(VarSet, VarTypes, !Info),
+            poly_info_set_rtti_varmaps(RttiVarMaps, !Info),
+            MCA = no
+        )
+    ).
+
+get_special_proc(Type, SpecialPredId, ModuleInfo, PredName, PredId, ProcId) :-
+    TypeCategory = classify_type(ModuleInfo, Type),
+    get_category_name(TypeCategory) = MaybeCategoryName,
+    (
+        MaybeCategoryName = no,
+        module_info_get_special_pred_map(ModuleInfo, SpecialPredMap),
+        type_to_ctor_det(Type, TypeCtor),
+        map.search(SpecialPredMap, SpecialPredId - TypeCtor, PredId),
+        module_info_pred_info(ModuleInfo, PredId, PredInfo),
+        Module = pred_info_module(PredInfo),
+        Name = pred_info_name(PredInfo),
+        PredName = qualified(Module, Name),
+        special_pred_mode_num(SpecialPredId, ProcInt),
+        proc_id_to_int(ProcId, ProcInt)
+    ;
+        MaybeCategoryName = yes(CategoryName),
+        special_pred_name_arity(SpecialPredId, SpecialName, _, Arity),
+        Name = "builtin_" ++ SpecialName ++ "_" ++ CategoryName,
+        lookup_builtin_pred_proc_id(ModuleInfo, mercury_private_builtin_module,
+            Name, pf_predicate, Arity, only_mode, PredId, ProcId),
+        PredName = qualified(mercury_private_builtin_module, Name)
+    ).
+
+get_special_proc_det(Type, SpecialPredId, ModuleInfo, PredName,
+        PredId, ProcId) :-
+    (
+        get_special_proc(Type, SpecialPredId, ModuleInfo,
+            PredNamePrime, PredIdPrime, ProcIdPrime)
+    ->
+        PredName = PredNamePrime,
+        PredId = PredIdPrime,
+        ProcId = ProcIdPrime
+    ;
+        unexpected($module, $pred, "get_special_proc failed")
+    ).
+
+:- func get_category_name(type_ctor_category) = maybe(string).
+
+get_category_name(CtorCat) = MaybeName :-
+    (
+        CtorCat = ctor_cat_builtin(cat_builtin_int),
+        MaybeName = yes("int")
+    ;
+        CtorCat = ctor_cat_builtin(cat_builtin_char),
+        MaybeName = yes("character")
+    ;
+        CtorCat = ctor_cat_builtin(cat_builtin_float),
+        MaybeName = yes("float")
+    ;
+        CtorCat = ctor_cat_builtin(cat_builtin_string),
+        MaybeName = yes("string")
+    ;
+        CtorCat = ctor_cat_higher_order,
+        MaybeName = yes("pred")
+    ;
+        CtorCat = ctor_cat_tuple,
+        MaybeName = yes("tuple")
+    ;
+        ( CtorCat = ctor_cat_enum(_)
+        ; CtorCat = ctor_cat_builtin_dummy
+        ; CtorCat = ctor_cat_user(_)
+        ; CtorCat = ctor_cat_system(_)
+        ),
+        MaybeName = no
+    ;
+        CtorCat = ctor_cat_variable,
+        unexpected($module, $pred, "variable type")
+    ;
+        CtorCat = ctor_cat_void,
+        unexpected($module, $pred, "void_type")
+    ).
+
+init_type_info_var(Type, ArgVars, MaybePreferredVar, TypeInfoVar, TypeInfoGoal,
+        !VarSet, !VarTypes, !RttiVarMaps) :-
+    type_to_ctor_det(Type, TypeCtor),
+    Cell = type_info_cell(TypeCtor),
+    ConsId = cell_cons_id(Cell),
+    do_init_type_info_var(Type, Cell, ConsId, ArgVars, MaybePreferredVar,
+        TypeInfoVar, TypeInfoGoal, !VarSet, !VarTypes, !RttiVarMaps).
+
+:- pred do_init_type_info_var(mer_type::in, polymorphism_cell::in, cons_id::in,
+    list(prog_var)::in, maybe(prog_var)::in, prog_var::out, hlds_goal::out,
+    prog_varset::in, prog_varset::out, vartypes::in, vartypes::out,
+    rtti_varmaps::in, rtti_varmaps::out) is det.
+
+do_init_type_info_var(Type, Cell, ConsId, ArgVars, MaybePreferredVar,
+        TypeInfoVar, TypeInfoGoal, !VarSet, !VarTypes, !RttiVarMaps) :-
+    TypeInfoRHS = rhs_functor(ConsId, no, ArgVars),
+    % Introduce a new variable.
+    (
+        MaybePreferredVar = yes(TypeInfoVar)
+    ;
+        MaybePreferredVar = no,
+        new_type_info_var_raw(Type, type_info, TypeInfoVar,
+            !VarSet, !VarTypes, !RttiVarMaps)
+    ),
+
+    % Create the construction unification to initialize the variable.
+    UniMode = (free - ground(shared, none) ->
+        ground(shared, none) - ground(shared, none)),
+    list.length(ArgVars, NumArgVars),
+    list.duplicate(NumArgVars, UniMode, UniModes),
+    Unification = construct(TypeInfoVar, ConsId, ArgVars, UniModes,
+        construct_dynamically, cell_is_unique, no_construct_sub_info),
+    UnifyMode = (free -> ground(shared, none)) -
+        (ground(shared, none) -> ground(shared, none)),
+    UnifyContext = unify_context(umc_explicit, []),
+    % XXX The UnifyContext is wrong.
+    Unify = unify(TypeInfoVar, TypeInfoRHS, UnifyMode, Unification,
+        UnifyContext),
+
+    % Create a goal_info for the unification.
+    set_of_var.list_to_set([TypeInfoVar | ArgVars], NonLocals),
+    list.duplicate(NumArgVars, ground(shared, none), ArgInsts),
+    % Note that we could perhaps be more accurate than `ground(shared)',
+    % but it shouldn't make any difference.
+    InstConsId = cell_inst_cons_id(Cell, NumArgVars),
+    InstResults = inst_test_results(inst_result_is_ground,
+        inst_result_does_not_contain_any,
+        inst_result_contains_instnames_known(set.init),
+        inst_result_contains_types_unknown),
+    TypeInfoVarInst = bound(unique, InstResults,
+        [bound_functor(InstConsId, ArgInsts)]),
+    InstMapDelta = instmap_delta_from_assoc_list(
+        [TypeInfoVar - TypeInfoVarInst]),
+    goal_info_init(NonLocals, InstMapDelta, detism_det, purity_pure, GoalInfo),
+    TypeInfoGoal = hlds_goal(Unify, GoalInfo).
+
+init_const_type_ctor_info_var(Type, TypeCtor, TypeCtorInfoVar,
+        ConsId, TypeCtorInfoGoal, !VarSet, !VarTypes, !RttiVarMaps) :-
+    ConsId = type_ctor_info_cons_id(TypeCtor),
+    init_const_type_ctor_info_var_from_cons_id(Type, ConsId,
+        TypeCtorInfoVar, TypeCtorInfoGoal, !VarSet, !VarTypes, !RttiVarMaps).
+
+:- pred init_const_type_ctor_info_var_from_cons_id(mer_type::in, cons_id::in,
+    prog_var::out, hlds_goal::out, prog_varset::in, prog_varset::out,
+    vartypes::in, vartypes::out, rtti_varmaps::in, rtti_varmaps::out) is det.
+
+init_const_type_ctor_info_var_from_cons_id(Type, ConsId,
+        TypeCtorInfoVar, TypeCtorInfoGoal, !VarSet, !VarTypes, !RttiVarMaps) :-
+    % Introduce a new variable.
+    new_type_info_var_raw(Type, type_ctor_info, TypeCtorInfoVar,
+        !VarSet, !VarTypes, !RttiVarMaps),
+
+    % Create the construction unification to initialize the variable.
+    TypeInfoRHS = rhs_functor(ConsId, no, []),
+    Unification = construct(TypeCtorInfoVar, ConsId, [], [],
+        construct_dynamically, cell_is_shared, no_construct_sub_info),
+    UnifyMode = (free -> ground(shared, none)) -
+        (ground(shared, none) -> ground(shared, none)),
+    UnifyContext = unify_context(umc_explicit, []),
+    % XXX The UnifyContext is wrong.
+    Unify = unify(TypeCtorInfoVar, TypeInfoRHS, UnifyMode,
+        Unification, UnifyContext),
+
+    % Create a goal_info for the unification.
+    NonLocals = set_of_var.make_singleton(TypeCtorInfoVar),
+    InstmapDelta = instmap_delta_bind_var(TypeCtorInfoVar),
+    goal_info_init(NonLocals, InstmapDelta, detism_det, purity_pure, GoalInfo),
+    TypeCtorInfoGoal = hlds_goal(Unify, GoalInfo).
+
+%---------------------------------------------------------------------------%
+
+:- pred make_head_vars(list(tvar)::in, tvarset::in,
+    list(prog_var)::out, poly_info::in, poly_info::out) is det.
+
+make_head_vars([], _, [], !Info).
+make_head_vars([TypeVar | TypeVars], TypeVarSet, TypeInfoVars, !Info) :-
+    get_tvar_kind(!.Info ^ poly_tvar_kinds, TypeVar, Kind),
+    Type = type_variable(TypeVar, Kind),
+    new_type_info_var(Type, type_info, Var, !Info),
+    ( varset.search_name(TypeVarSet, TypeVar, TypeVarName) ->
+        poly_info_get_varset(!.Info, VarSet0),
+        VarName = "TypeInfo_for_" ++ TypeVarName,
+        varset.name_var(Var, VarName, VarSet0, VarSet),
+        poly_info_set_varset(VarSet, !Info)
+    ;
+        true
+    ),
+    make_head_vars(TypeVars, TypeVarSet, TypeInfoVars1, !Info),
+    TypeInfoVars = [Var | TypeInfoVars1].
+
+:- pred new_type_info_var(mer_type::in, type_info_kind::in,
+    prog_var::out, poly_info::in, poly_info::out) is det.
+
+new_type_info_var(Type, Kind, Var, !Info) :-
+    poly_info_get_varset(!.Info, VarSet0),
+    poly_info_get_var_types(!.Info, VarTypes0),
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+    new_type_info_var_raw(Type, Kind, Var, VarSet0, VarSet,
+        VarTypes0, VarTypes, RttiVarMaps0, RttiVarMaps),
+    poly_info_set_varset_and_types(VarSet, VarTypes, !Info),
+    poly_info_set_rtti_varmaps(RttiVarMaps, !Info).
+
+new_type_info_var_raw(Type, Kind, Var, !VarSet, !VarTypes, !RttiVarMaps) :-
+    % Introduce new variable.
+    varset.new_var(Var, !VarSet),
+    term.var_to_int(Var, VarNum),
+    string.int_to_string(VarNum, VarNumStr),
+    (
+        Kind = type_info,
+        Prefix = "TypeInfo_",
+        rtti_det_insert_type_info_type(Var, Type, !RttiVarMaps)
+    ;
+        Kind = type_ctor_info,
+        Prefix = "TypeCtorInfo_"
+
+        % XXX Perhaps we should record the variables holding
+        % type_ctor_infos in the rtti_varmaps somewhere.
+    ),
+    Name = Prefix ++ VarNumStr,
+    varset.name_var(Var, Name, !VarSet),
+    add_var_type(Var, type_info_type, !VarTypes).
+
+%---------------------------------------------------------------------------%
+
+:- pred get_type_info_locn(tvar::in, type_info_locn::out, poly_info::in,
+    poly_info::out) is det.
+
+get_type_info_locn(TypeVar, TypeInfoLocn, !Info) :-
+    % If we have already allocated a location for this type_info, then all
+    % we need to do is to extract the type_info variable from its location.
+    (
+        rtti_search_type_info_locn(!.Info ^ poly_rtti_varmaps, TypeVar,
+            TypeInfoLocnPrime)
+    ->
+        TypeInfoLocn = TypeInfoLocnPrime
+    ;
+        % Otherwise, we need to create a new type_info variable, and set the
+        % location for this type variable to be that type_info variable.
+        %
+        % This is wrong if the type variable is one of the existentially
+        % quantified variables of a called predicate and the variable occurs
+        % in an existential typeclass constraint. In that case the type_info
+        % will be stored in the typeclass_info variable produced by the
+        % predicate, not in a type_info variable. maybe_extract_type_info
+        % will fix this up when the typeclass_info is created.
+
+        get_tvar_kind(!.Info ^ poly_tvar_kinds, TypeVar, Kind),
+        Type = type_variable(TypeVar, Kind),
+        new_type_info_var(Type, type_info, Var, !Info),
+        TypeInfoLocn = type_info(Var),
+        poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+        rtti_det_insert_type_info_locn(TypeVar, TypeInfoLocn,
+            RttiVarMaps0, RttiVarMaps),
+        poly_info_set_rtti_varmaps(RttiVarMaps, !Info)
+    ).
+
+    % Generate code to get the value of a type variable.
+    %
+:- pred get_type_info_from_locn(tvar::in, type_info_locn::in,
+    prog_var::out, list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+get_type_info_from_locn(TypeVar, TypeInfoLocn, Var, ExtraGoals, !Info) :-
+    (
+        % If the typeinfo is available in a variable, just use it.
+        TypeInfoLocn = type_info(TypeInfoVar),
+        Var = TypeInfoVar,
+        ExtraGoals = []
+    ;
+        % If the typeinfo is in a typeclass_info, then we need to extract it
+        % before using it.
+        TypeInfoLocn = typeclass_info(TypeClassInfoVar, Index),
+        polymorphism_extract_type_info(TypeVar, TypeClassInfoVar, Index,
+            ExtraGoals, Var, !Info)
+    ).
+
+:- pred polymorphism_extract_type_info(tvar::in, prog_var::in, int::in,
+    list(hlds_goal)::out, prog_var::out, poly_info::in, poly_info::out) is det.
+
+polymorphism_extract_type_info(TypeVar, TypeClassInfoVar, Index, Goals,
+        TypeInfoVar, !Info) :-
+    get_poly_const(Index, IndexVar, IndexGoals, !Info),
+    poly_info_get_varset(!.Info, VarSet0),
+    poly_info_get_var_types(!.Info, VarTypes0),
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+    poly_info_get_module_info(!.Info, ModuleInfo),
+    poly_info_get_tvar_kinds(!.Info, TVarKinds),
+    get_tvar_kind(TVarKinds, TypeVar, Kind),
+    IndexIntOrVar = iov_var(IndexVar),
+    gen_extract_type_info(ModuleInfo, TypeVar, Kind, TypeClassInfoVar,
+        IndexIntOrVar, ExtractGoals, TypeInfoVar,
+        VarSet0, VarSet, VarTypes0, VarTypes, RttiVarMaps0, RttiVarMaps),
+    Goals = IndexGoals ++ ExtractGoals,
+    poly_info_set_varset_and_types(VarSet, VarTypes, !Info),
+    poly_info_set_rtti_varmaps(RttiVarMaps, !Info).
+
+gen_extract_type_info(ModuleInfo, TypeVar, Kind, TypeClassInfoVar,
+        IndexIntOrVar, Goals, TypeInfoVar, !VarSet, !VarTypes, !RttiVarMaps) :-
+    (
+        IndexIntOrVar = iov_int(Index),
+        % We cannot call get_poly_const since we don't have a poly_info.
+        make_int_const_construction_alloc(Index, yes("TypeInfoIndex"),
+            IndexGoal, IndexVar, !VarSet, !VarTypes),
+        IndexGoals = [IndexGoal]
+    ;
+        IndexIntOrVar = iov_var(IndexVar),
+        IndexGoals = []
+    ),
+    Type = type_variable(TypeVar, Kind),
+    new_type_info_var_raw(Type, type_info, TypeInfoVar,
+        !VarSet, !VarTypes, !RttiVarMaps),
+    goal_util.generate_simple_call(mercury_private_builtin_module,
+        "type_info_from_typeclass_info", pf_predicate, only_mode,
+        detism_det, purity_pure, [TypeClassInfoVar, IndexVar, TypeInfoVar], [],
+        instmap_delta_bind_var(TypeInfoVar), ModuleInfo, term.context_init,
+        CallGoal),
+    Goals = IndexGoals ++ [CallGoal].
+
+:- pred get_poly_const(int::in, prog_var::out, list(hlds_goal)::out,
+    poly_info::in, poly_info::out) is det.
+
+get_poly_const(IntConst, IntVar, Goals, !Info) :-
+    poly_info_get_varset(!.Info, VarSet0),
+    poly_info_get_var_types(!.Info, VarTypes0),
+
+    poly_info_get_int_const_map(!.Info, IntConstMap0),
+    ( map.search(IntConstMap0, IntConst, IntVarPrime) ->
+        poly_info_get_num_reuses(!.Info, NumReuses),
+        poly_info_set_num_reuses(NumReuses + 1, !Info),
+        IntVar = IntVarPrime,
+        Goals = []
+    ;
+        make_int_const_construction_alloc(IntConst,
+            yes("PolyConst" ++ string.int_to_string(IntConst)),
+            Goal, IntVar, VarSet0, VarSet, VarTypes0, VarTypes),
+        map.det_insert(IntConst, IntVar, IntConstMap0, IntConstMap),
+        poly_info_set_int_const_map(IntConstMap, !Info),
+        poly_info_set_varset_and_types(VarSet, VarTypes, !Info),
+        Goals = [Goal]
+    ).
+
+%-----------------------------------------------------------------------------%
+
+    % Usually when we call make_typeclass_info_head_var, we want to record
+    % the type_info_locn for each constrained type var so that later goals
+    % will know where to get the type_info from. However, when setting up
+    % head vars for existential constraints on the predicate/function we
+    % are processing, we assume that the type_infos will be produced
+    % somewhere else in the goal. In this case, we don't want to record
+    % the type_info_locns (if we did, then the code to actually produce the
+    % type_info will just try to get it from here, which would be a mode
+    % error).
+    %
+:- type record_type_info_locns
+    --->    do_record_type_info_locns
+    ;       do_not_record_type_info_locns.
+
+    % Create a head var for each class constraint.
+    %
+:- pred make_typeclass_info_head_vars(record_type_info_locns::in,
+    list(prog_constraint)::in, list(prog_var)::out,
+    poly_info::in, poly_info::out) is det.
+
+make_typeclass_info_head_vars(RecordLocns, Constraints, ExtraHeadVars,
+        !Info) :-
+    list.map_foldl(make_typeclass_info_head_var(RecordLocns), Constraints,
+        ExtraHeadVars, !Info).
+
+:- pred make_typeclass_info_head_var(record_type_info_locns::in,
+    prog_constraint::in, prog_var::out, poly_info::in, poly_info::out) is det.
+
+make_typeclass_info_head_var(RecordLocns, Constraint, TypeClassInfoVar,
+        !Info) :-
+    (
+        poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+        rtti_search_typeclass_info_var(RttiVarMaps0, Constraint,
+            OldTypeClassInfoVar)
+    ->
+        TypeClassInfoVar = OldTypeClassInfoVar
+    ;
+        % Make a new variable to contain the dictionary for this typeclass
+        % constraint.
+        new_typeclass_info_var(Constraint, typeclass_info_kind,
+            TypeClassInfoVar, _TypeClassInfoVarType, !Info),
+        (
+            RecordLocns = do_record_type_info_locns,
+            record_constraint_type_info_locns(Constraint, TypeClassInfoVar,
+                !Info)
+        ;
+            RecordLocns = do_not_record_type_info_locns
+        )
+    ).
+
+:- pred record_constraint_type_info_locns(prog_constraint::in, prog_var::in,
+    poly_info::in, poly_info::out) is det.
+
+record_constraint_type_info_locns(Constraint, ExtraHeadVar, !Info) :-
+    poly_info_get_module_info(!.Info, ModuleInfo),
+
+    % Work out how many superclasses the class has.
+    Constraint = constraint(ClassName, ClassTypes),
+    list.length(ClassTypes, ClassArity),
+    ClassId = class_id(ClassName, ClassArity),
+    module_info_get_class_table(ModuleInfo, ClassTable),
+    map.lookup(ClassTable, ClassId, ClassDefn),
+    SuperClasses = ClassDefn ^ class_supers,
+    list.length(SuperClasses, NumSuperClasses),
+
+    % Find all the type variables in the constraint, and remember what
+    % index they appear in in the typeclass info.
+
+    % The first type_info will be just after the superclass infos.
+    First = NumSuperClasses + 1,
+    Last = NumSuperClasses + ClassArity,
+    assoc_list.from_corresponding_lists(ClassTypes, First `..` Last,
+        IndexedClassTypes),
+
+    % Work out which type variables we haven't seen before, or which we
+    % assumed earlier would be produced in a type_info (this can happen for
+    % code which needs mode reordering and which calls existentially
+    % quantified predicates or deconstructs existentially quantified
+    % terms).
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+    NewTVarAndIndex = (pred(TVarAndIndex::out) is nondet :-
+        list.member(Type - Index, IndexedClassTypes),
+        type_vars(Type, TypeVars),
+        list.member(TypeVar, TypeVars),
+        ( rtti_search_type_info_locn(RttiVarMaps0, TypeVar, TypeInfoLocn) ->
+            TypeInfoLocn = type_info(_)
+        ;
+            true
+        ),
+        TVarAndIndex = TypeVar - Index
+    ),
+    solutions(NewTVarAndIndex, NewClassTypeVars),
+
+    % Make an entry in the TypeInfo locations map for each new type variable.
+    % The type variable can be found at the previously calculated offset
+    % with the new typeclass_info.
+    MakeEntry =
+        (pred(IndexedTypeVar::in, R0::in, R::out) is det :-
+            IndexedTypeVar = TheTypeVar - Index,
+            Location = typeclass_info(ExtraHeadVar, Index),
+            rtti_set_type_info_locn(TheTypeVar, Location, R0, R)
+        ),
+    list.foldl(MakeEntry, NewClassTypeVars, RttiVarMaps0, RttiVarMaps),
+    poly_info_set_rtti_varmaps(RttiVarMaps, !Info).
+
+:- type tci_var_kind
+    --->    base_typeclass_info_kind
+    ;       typeclass_info_kind.
+
+:- pred new_typeclass_info_var(prog_constraint::in, tci_var_kind::in,
+    prog_var::out, mer_type::out, poly_info::in, poly_info::out) is det.
+
+new_typeclass_info_var(Constraint, VarKind, Var, VarType, !Info) :-
+    poly_info_get_varset(!.Info, VarSet0),
+    poly_info_get_var_types(!.Info, VarTypes0),
+    poly_info_get_rtti_varmaps(!.Info, RttiVarMaps0),
+
+    Constraint = constraint(ClassName, _),
+    ClassNameString = unqualify_name(ClassName),
+
+    % Introduce new variable.
+    varset.new_var(Var, VarSet0, VarSet1),
+    (
+        VarKind = base_typeclass_info_kind,
+        Name = "BaseTypeClassInfo_for_" ++ ClassNameString
+    ;
+        VarKind = typeclass_info_kind,
+        Name = "TypeClassInfo_for_" ++ ClassNameString
+    ),
+    varset.name_var(Var, Name, VarSet1, VarSet),
+    build_typeclass_info_type(Constraint, VarType),
+    add_var_type(Var, VarType, VarTypes0, VarTypes),
+    rtti_det_insert_typeclass_info_var(Constraint, Var,
+        RttiVarMaps0, RttiVarMaps),
+
+    poly_info_set_varset_and_types(VarSet, VarTypes, !Info),
+    poly_info_set_rtti_varmaps(RttiVarMaps, !Info).
+
+build_typeclass_info_type(_Constraint, DictionaryType) :-
+    PrivateBuiltin = mercury_private_builtin_module,
+    TypeclassInfoTypeName = qualified(PrivateBuiltin, "typeclass_info"),
+    DictionaryType = defined_type(TypeclassInfoTypeName, [], kind_star).
+
+%---------------------------------------------------------------------------%
+
+type_is_typeclass_info(TypeClassInfoType) :-
+    type_to_ctor(TypeClassInfoType, TypeCtor),
+    TypeCtor = type_ctor(qualified(ModuleName, "typeclass_info"), 0),
+    ModuleName = mercury_private_builtin_module.
+
+type_is_type_info_or_ctor_type(TypeInfoType) :-
+    type_to_ctor_and_args(TypeInfoType, TypeCtor, []),
+    TypeCtor = type_ctor(qualified(ModuleName, TypeName), 0),
+    ModuleName = mercury_private_builtin_module,
+    ( TypeName = "type_info"
+    ; TypeName = "type_ctor_info"
+    ).
+
+build_type_info_type(Type, TypeInfoType) :-
+    % XXX TypeInfoType = type_ctor_info_type.
+    ( type_has_variable_arity_ctor(Type, _, _) ->
+        % We cannot use a plain type_ctor_info because we need to
+        % record the arity.
+        TypeInfoType = type_info_type
+    ; type_to_ctor_and_args(Type, _Ctor, Args) ->
+        (
+            Args = [],
+            TypeInfoType = type_ctor_info_type
+        ;
+            Args = [_ | _],
+            TypeInfoType = type_info_type
+        )
+    ;
+        % The type is variable, which means we have a type_info for it.
+        % That type_info may actually be a type_ctor_info, but the code
+        % of the current predicate won't treat it as such.
+        TypeInfoType = type_info_type
+    ).
+
+%---------------------------------------------------------------------------%
+
+    % Expand the bodies of all class methods. Class methods for imported
+    % classes are only expanded if we are performing type specialization,
+    % so that method lookups for imported classes can be optimized.
+    %
+    % The expansion involves inserting a class_method_call with the appropriate
+    % arguments, which is responsible for extracting the appropriate part
+    % of the dictionary.
+    %
+:- pred expand_class_method_bodies(module_info::in, module_info::out) is det.
+
+expand_class_method_bodies(!ModuleInfo) :-
+    module_info_get_class_table(!.ModuleInfo, Classes),
+    module_info_get_name(!.ModuleInfo, ModuleName),
+    map.keys(Classes, ClassIds0),
+
+    module_info_get_globals(!.ModuleInfo, Globals),
+    globals.lookup_bool_option(Globals, user_guided_type_specialization,
+        TypeSpec),
+    (
+        TypeSpec = no,
+        % Don't expand classes from other modules.
+        list.filter(class_id_is_from_given_module(ModuleName),
+            ClassIds0, ClassIds)
+    ;
+        TypeSpec = yes,
+        ClassIds = ClassIds0
+    ),
+    map.apply_to_list(ClassIds, Classes, ClassDefns),
+    list.foldl(expand_class_method_bodies_2, ClassDefns, !ModuleInfo).
+
+:- pred class_id_is_from_given_module(module_name::in, class_id::in)
+    is semidet.
+
+class_id_is_from_given_module(ModuleName, ClassId) :-
+    ClassId = class_id(qualified(ModuleName, _), _).
+
+:- pred expand_class_method_bodies_2(hlds_class_defn::in,
+    module_info::in, module_info::out) is det.
+
+expand_class_method_bodies_2(ClassDefn, !ModuleInfo) :-
+    Interface = ClassDefn ^ class_hlds_interface,
+    list.foldl2(expand_class_method_body, Interface, 1, _, !ModuleInfo).
+
+:- pred expand_class_method_body(hlds_class_proc::in, int::in, int::out,
+    module_info::in, module_info::out) is det.
+
+expand_class_method_body(hlds_class_proc(PredId, ProcId), !ProcNum,
+        !ModuleInfo) :-
+    module_info_get_preds(!.ModuleInfo, PredTable0),
+    map.lookup(PredTable0, PredId, PredInfo0),
+    pred_info_get_procedures(PredInfo0, ProcTable0),
+    map.lookup(ProcTable0, ProcId, ProcInfo0),
+
+    % Find which of the constraints on the pred is the one introduced
+    % because it is a class method.
+    pred_info_get_class_context(PredInfo0, ClassContext),
+    ( ClassContext = constraints([Head | _], _) ->
+        InstanceConstraint = Head
+    ;
+        unexpected($module, $pred, "class method is not constrained")
+    ),
+
+    proc_info_get_rtti_varmaps(ProcInfo0, RttiVarMaps),
+    rtti_lookup_typeclass_info_var(RttiVarMaps, InstanceConstraint,
+        TypeClassInfoVar),
+
+    proc_info_get_headvars(ProcInfo0, HeadVars0),
+    proc_info_get_argmodes(ProcInfo0, Modes0),
+    proc_info_get_declared_determinism(ProcInfo0, MaybeDetism0),
+    (
+        MaybeDetism0 = yes(Detism)
+    ;
+        MaybeDetism0 = no,
+        % Omitting the determinism for a method is not allowed. But make_hlds
+        % will have already detected and reported the error. So here we can
+        % just pick some value at random; hopefully something that won't cause
+        % flow-on errors. We also mark the predicate as invalid, also to avoid
+        % flow-on errors.
+        Detism = detism_non,
+        module_info_remove_predid(PredId, !ModuleInfo)
+    ),
+
+    % Work out which argument corresponds to the constraint which is introduced
+    % because this is a class method, then delete it from the list of args to
+    % the class_method_call. That variable becomes the "dictionary" variable
+    % for the class_method_call. (cf. the closure for a higher order call).
+    (
+        list.nth_member_search(HeadVars0, TypeClassInfoVar, N),
+        delete_nth(HeadVars0, N, HeadVarsPrime),
+        delete_nth(Modes0, N, ModesPrime)
+    ->
+        HeadVars = HeadVarsPrime,
+        Modes = ModesPrime
+    ;
+        unexpected($module, $pred, "typeclass_info var not found")
+    ),
+
+    InstanceConstraint = constraint(ClassName, InstanceArgs),
+    list.length(InstanceArgs, InstanceArity),
+    pred_info_get_call_id(PredInfo0, CallId),
+    BodyGoalExpr = generic_call(
+        class_method(TypeClassInfoVar, !.ProcNum,
+            class_id(ClassName, InstanceArity), CallId),
+        HeadVars, Modes, arg_reg_types_unset, Detism),
+
+    % Make the goal info for the call.
+    set_of_var.list_to_set(HeadVars0, NonLocals),
+    instmap_delta_from_mode_list(HeadVars0, Modes0, !.ModuleInfo,
+        InstmapDelta),
+    pred_info_get_purity(PredInfo0, Purity),
+    goal_info_init(NonLocals, InstmapDelta, Detism, Purity, GoalInfo),
+    BodyGoal = hlds_goal(BodyGoalExpr, GoalInfo),
+
+    proc_info_set_goal(BodyGoal, ProcInfo0, ProcInfo),
+    map.det_update(ProcId, ProcInfo, ProcTable0, ProcTable),
+    pred_info_set_procedures(ProcTable, PredInfo0, PredInfo1),
+    ( pred_info_is_imported(PredInfo1) ->
+        pred_info_set_import_status(status_opt_imported, PredInfo1, PredInfo)
+    ;
+        PredInfo = PredInfo1
+    ),
+
+    map.det_update(PredId, PredInfo, PredTable0, PredTable),
+    module_info_set_preds(PredTable, !ModuleInfo),
+
+    !:ProcNum = !.ProcNum + 1.
+
+:- pred delete_nth(list(T)::in, int::in, list(T)::out) is semidet.
+
+delete_nth([X | Xs], N0, Result) :-
+    ( N0 > 1 ->
+        N = N0 - 1,
+        delete_nth(Xs, N, TheRest),
+        Result = [X | TheRest]
+    ;
+        Result = Xs
+    ).
+
+%---------------------------------------------------------------------------%
+
+:- func get_constrained_vars(prog_constraint) = list(tvar).
+
+get_constrained_vars(Constraint) = CVars :-
+    Constraint = constraint(_, CTypes),
+    type_vars_list(CTypes, CVars).
+
+%---------------------------------------------------------------------------%
+
+:- pred all_are_const_struct_args(
+    assoc_list(prog_var, maybe(const_struct_arg))::in,
+    list(const_struct_arg)::out) is semidet.
+
+all_are_const_struct_args([], []).
+all_are_const_struct_args([VarMCA | VarsMCAs], [ConstArg | ConstArgs]) :-
+    VarMCA = _Var - MCA,
+    MCA = yes(ConstArg),
+    all_are_const_struct_args(VarsMCAs, ConstArgs).
+
+:- pred get_inst_of_const_struct_arg(const_struct_db::in, const_struct_arg::in,
+    mer_inst::out)
+    is det.
+
+get_inst_of_const_struct_arg(ConstStructDb, ConstArg, Inst) :-
+    (
+        ConstArg = csa_constant(ConsId, _),
+        Inst = bound(shared, inst_test_results_fgtc,
+            [bound_functor(ConsId, [])])
+    ;
+        ConstArg = csa_const_struct(StructNum),
+        lookup_const_struct_num(ConstStructDb, StructNum, Struct),
+        Struct = const_struct(_, _, _, Inst)
+    ).
+
+%---------------------------------------------------------------------------%
+
+:- pred materialize_base_typeclass_info_var(prog_constraint::in, cons_id::in,
+    prog_var::out, list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+materialize_base_typeclass_info_var(Constraint, ConsId, Var, Goals, !Info) :-
+    poly_info_get_const_struct_var_map(!.Info, ConstStructVarMap0),
+    build_typeclass_info_type(Constraint, ConstArgType),
+    ConstArg = csa_constant(ConsId, ConstArgType),
+    ( map.search(ConstStructVarMap0, ConstArg, OldVar) ->
+        poly_info_get_num_reuses(!.Info, NumReuses),
+        poly_info_set_num_reuses(NumReuses + 1, !Info),
+        Var = OldVar,
+        Goals = []
+    ;
+        new_typeclass_info_var(Constraint, base_typeclass_info_kind, Var,
+            _VarType, !Info),
+
+        % Create the construction unification to initialize the variable.
+        RHS = rhs_functor(ConsId, no, []),
+        Unification = construct(Var, ConsId, [], [],
+            construct_dynamically, cell_is_shared, no_construct_sub_info),
+        UnifyMode = (free -> ground(shared, none)) -
+            (ground(shared, none) -> ground(shared, none)),
+        UnifyContext = unify_context(umc_explicit, []),
+        % XXX The UnifyContext is wrong.
+        Unify = unify(Var, RHS, UnifyMode, Unification, UnifyContext),
+
+        % Create the unification goal.
+        NonLocals = set_of_var.make_singleton(Var),
+        InstmapDelta = instmap_delta_bind_var(Var),
+        goal_info_init(NonLocals, InstmapDelta, detism_det, purity_pure,
+            GoalInfo),
+        Goal = hlds_goal(Unify, GoalInfo),
+        Goals = [Goal]
+    ).
+
+:- pred materialize_typeclass_info_var(prog_constraint::in, int::in,
+    prog_var::out, list(hlds_goal)::out, poly_info::in, poly_info::out) is det.
+
+materialize_typeclass_info_var(Constraint, InstanceIdConstNum, Var, Goals,
+        !Info) :-
+    poly_info_get_const_struct_var_map(!.Info, ConstStructVarMap0),
+    InstanceIdConstArg = csa_const_struct(InstanceIdConstNum),
+    ( map.search(ConstStructVarMap0, InstanceIdConstArg, OldVar) ->
+        poly_info_get_num_reuses(!.Info, NumReuses),
+        poly_info_set_num_reuses(NumReuses + 1, !Info),
+        Var = OldVar,
+        Goals = []
+    ;
+        new_typeclass_info_var(Constraint, typeclass_info_kind, Var, _VarType,
+            !Info),
+        map.det_insert(InstanceIdConstArg, Var,
+            ConstStructVarMap0, ConstStructVarMap),
+        poly_info_set_const_struct_var_map(ConstStructVarMap, !Info),
+
+        % Create the construction unification to initialize the variable.
+        ConsId = typeclass_info_const(InstanceIdConstNum),
+        RHS = rhs_functor(ConsId, no, []),
+        Unification = construct(Var, ConsId, [], [],
+            construct_statically, cell_is_shared, no_construct_sub_info),
+        UnifyMode = (free -> ground(shared, none)) -
+            (ground(shared, none) -> ground(shared, none)),
+        UnifyContext = unify_context(umc_explicit, []),
+        % XXX The UnifyContext is wrong.
+        GoalExpr = unify(Var, RHS, UnifyMode, Unification, UnifyContext),
+
+        % Create a goal_info for the unification.
+        NonLocals = set_of_var.make_singleton(Var),
+        InstmapDelta = instmap_delta_bind_var(Var),
+        goal_info_init(NonLocals, InstmapDelta, detism_det, purity_pure,
+            GoalInfo),
+        Goal = hlds_goal(GoalExpr, GoalInfo),
+        Goals = [Goal]
+    ).
+
+%---------------------------------------------------------------------------%
+%---------------------------------------------------------------------------%
+
+:- type const_or_var_arg
+    --->    cova_const(const_struct_arg)
+    ;       cova_var(prog_var).
+
+:- pred make_const_or_var_arg(pair(prog_var, maybe(const_struct_arg))::in,
+    const_or_var_arg::out) is det.
+
+make_const_or_var_arg(Var - MCA, ConstOrVarArg) :-
+    (
+        MCA = no,
+        ConstOrVarArg = cova_var(Var)
+    ;
+        MCA = yes(ConstArg),
+        ConstOrVarArg = cova_const(ConstArg)
+    ).
+
+:- type type_info_var_map ==
+    map(type_ctor,
+        map(list(mer_type), pair(prog_var, maybe(const_struct_arg)))).
+
+:- type typeclass_info_map_entry
+    --->    typeclass_info_map_entry(
+                % The cons_id representing the base_typeclass_info.
+                cons_id,
+
+                % Maps the arguments of the typeclass_info_cell_constructor
+                % after the base_typeclass_info to the variable that holds the
+                % typeclass_info for that cell.
+                map(list(const_or_var_arg),
+                    pair(prog_var, maybe(const_struct_arg)))
+            ).
+
+:- type typeclass_info_map ==
+    map(class_name, map(list(mer_type), typeclass_info_map_entry)).
+
+:- type int_const_map == map(int, prog_var).
+
+    % If the value that can be a constant structure argument is currently
+    % available in a variable, give the id of that variable.
+    %
+:- type const_struct_var_map == map(const_struct_arg, prog_var).
+
+:- type poly_info
+    --->    poly_info(
+                % The first two fields are from the proc_info.
+                poly_varset                 :: prog_varset,
+                poly_vartypes               :: vartypes,
+
+                % The next two fields from the pred_info.
+                poly_typevarset             :: tvarset,
+                poly_tvar_kinds             :: tvar_kind_map,
+
+                % Gives information about the locations of type_infos
+                % and typeclass_infos.
+                poly_rtti_varmaps           :: rtti_varmaps,
+
+                % Specifies why each constraint that was eliminated from the
+                % pred was able to be eliminated (this allows us to efficiently
+                % construct the dictionary).
+                % Note that the rtti_varmaps is separate from the
+                % constraint_proof_map, since the second is the information
+                % calculated by typecheck.m, while the first is the information
+                % calculated here in polymorphism.m.
+                poly_proof_map              :: constraint_proof_map,
+
+                % Specifies the constraints at each location in the goal.
+                poly_constraint_map         :: constraint_map,
+
+                % The next four maps hold information about what
+                % type_ctor_infos, type_infos, base_typeclass_infos,
+                % typeclass_infos and ints are guaranteed to be available
+                % (i.e. created by previous code on all execution paths)
+                % at the current point in the code, so they can be reused.
+                % The fifth field counts the number of times that one of these
+                % variables has in fact been reused.
+                %
+                % The type_infos and typeclass_infos are in the first two maps.
+                % The type_ctor_infos and base_typeclass_infos are in the
+                % fourth map. The integers are in the third map.
+                % The fourth map also caches typeclass_infos for instance ids.
+                poly_type_info_var_map      :: type_info_var_map,
+                poly_typeclass_info_map     :: typeclass_info_map,
+                poly_int_const_map          :: int_const_map,
+                poly_const_struct_var_map   :: const_struct_var_map,
+                poly_num_reuses             :: int,
+
+                poly_snapshot_num           :: int,
+
+                % The database of constant structures of the module.
+                % If a type_info or typeclass_info we construct is a constant
+                % term, we allocate it in this database.
+                poly_const_struct_db        :: const_struct_db,
+
+                poly_pred_info              :: pred_info,
+                poly_module_info            :: module_info
+            ).
+
+%---------------------------------------------------------------------------%
+
+    % Init_poly_info initializes a poly_info from a pred_info and clauses_info.
+    % (See also create_poly_info.)
+    %
+:- pred init_poly_info(module_info::in, pred_info::in, clauses_info::in,
+    poly_info::out) is det.
+
+init_poly_info(ModuleInfo, PredInfo, ClausesInfo, PolyInfo) :-
+    clauses_info_get_varset(ClausesInfo, VarSet),
+    clauses_info_get_vartypes(ClausesInfo, VarTypes),
+    pred_info_get_typevarset(PredInfo, TypeVarSet),
+    pred_info_get_tvar_kinds(PredInfo, TypeVarKinds),
+    pred_info_get_constraint_proofs(PredInfo, Proofs),
+    pred_info_get_constraint_map(PredInfo, ConstraintMap),
+    rtti_varmaps_init(RttiVarMaps),
+    map.init(TypeInfoVarMap),
+    map.init(TypeClassInfoMap),
+    map.init(IntConstMap),
+    map.init(ConstStructVarMap),
+    NumReuses = 0,
+    SnapshotNum = 0,
+    module_info_get_const_struct_db(ModuleInfo, ConstStructDb),
+    PolyInfo = poly_info(VarSet, VarTypes, TypeVarSet, TypeVarKinds,
+        RttiVarMaps, Proofs, ConstraintMap,
+        TypeInfoVarMap, TypeClassInfoMap, IntConstMap, ConstStructVarMap,
+        NumReuses, SnapshotNum, ConstStructDb, PredInfo, ModuleInfo).
+
+    % Create_poly_info creates a poly_info for an existing procedure.
+    % (See also init_poly_info.)
+    %
+create_poly_info(ModuleInfo, PredInfo, ProcInfo, PolyInfo) :-
+    pred_info_get_typevarset(PredInfo, TypeVarSet),
+    pred_info_get_tvar_kinds(PredInfo, TypeVarKinds),
+    pred_info_get_constraint_proofs(PredInfo, Proofs),
+    pred_info_get_constraint_map(PredInfo, ConstraintMap),
+    proc_info_get_varset(ProcInfo, VarSet),
+    proc_info_get_vartypes(ProcInfo, VarTypes),
+    proc_info_get_rtti_varmaps(ProcInfo, RttiVarMaps),
+    map.init(TypeInfoVarMap),
+    map.init(TypeClassInfoMap),
+    map.init(IntConstMap),
+    map.init(ConstStructVarMap),
+    NumReuses = 0,
+    SnapshotNum = 0,
+    module_info_get_const_struct_db(ModuleInfo, ConstStructDb),
+    PolyInfo = poly_info(VarSet, VarTypes, TypeVarSet, TypeVarKinds,
+        RttiVarMaps, Proofs, ConstraintMap, TypeInfoVarMap,
+        TypeClassInfoMap, IntConstMap, ConstStructVarMap,
+        NumReuses, SnapshotNum, ConstStructDb, PredInfo, ModuleInfo).
+
+poly_info_extract(Info, !PredInfo, !ProcInfo, !:ModuleInfo) :-
+    Info = poly_info(VarSet, VarTypes, TypeVarSet, TypeVarKinds,
+        RttiVarMaps, _Proofs, _ConstraintMap,
+        _TypeInfoVarMap, _TypeClassInfoMap, _IntConstMap, _ConstStructVarMap,
+        _NumReuses, _SnapshotNum, ConstStructDb, _OldPredInfo, !:ModuleInfo),
+
+    module_info_set_const_struct_db(ConstStructDb, !ModuleInfo),
+
+    % Set the new values of the fields in proc_info and pred_info.
+    proc_info_set_varset(VarSet, !ProcInfo),
+    proc_info_set_vartypes(VarTypes, !ProcInfo),
+    proc_info_set_rtti_varmaps(RttiVarMaps, !ProcInfo),
+    pred_info_set_typevarset(TypeVarSet, !PredInfo),
+    pred_info_set_tvar_kinds(TypeVarKinds, !PredInfo).
+
+%---------------------------------------------------------------------------%
+
+:- pred poly_info_get_varset(poly_info::in, prog_varset::out) is det.
+:- pred poly_info_get_var_types(poly_info::in, vartypes::out) is det.
+:- pred poly_info_get_typevarset(poly_info::in, tvarset::out) is det.
+:- pred poly_info_get_tvar_kinds(poly_info::in, tvar_kind_map::out) is det.
+:- pred poly_info_get_rtti_varmaps(poly_info::in, rtti_varmaps::out) is det.
+:- pred poly_info_get_proofs(poly_info::in, constraint_proof_map::out) is det.
+:- pred poly_info_get_constraint_map(poly_info::in, constraint_map::out)
+    is det.
+:- pred poly_info_get_type_info_var_map(poly_info::in,
+    type_info_var_map::out) is det.
+:- pred poly_info_get_typeclass_info_map(poly_info::in,
+    typeclass_info_map::out) is det.
+:- pred poly_info_get_int_const_map(poly_info::in, int_const_map::out) is det.
+:- pred poly_info_get_num_reuses(poly_info::in, int::out) is det.
+:- pred poly_info_get_const_struct_db(poly_info::in, const_struct_db::out)
+    is det.
+:- pred poly_info_get_const_struct_var_map(poly_info::in,
+    const_struct_var_map::out) is det.
+:- pred poly_info_get_pred_info(poly_info::in, pred_info::out) is det.
+:- pred poly_info_get_module_info(poly_info::in, module_info::out) is det.
+
+poly_info_get_varset(PolyInfo, PolyInfo ^ poly_varset).
+poly_info_get_var_types(PolyInfo, PolyInfo ^ poly_vartypes).
+poly_info_get_typevarset(PolyInfo, PolyInfo ^ poly_typevarset).
+poly_info_get_tvar_kinds(PolyInfo, PolyInfo ^ poly_tvar_kinds).
+poly_info_get_rtti_varmaps(PolyInfo, PolyInfo ^ poly_rtti_varmaps).
+poly_info_get_proofs(PolyInfo, PolyInfo ^ poly_proof_map).
+poly_info_get_constraint_map(PolyInfo, PolyInfo ^ poly_constraint_map).
+poly_info_get_type_info_var_map(PolyInfo, PolyInfo ^ poly_type_info_var_map).
+poly_info_get_typeclass_info_map(PolyInfo, PolyInfo ^ poly_typeclass_info_map).
+poly_info_get_int_const_map(PolyInfo, PolyInfo ^ poly_int_const_map).
+poly_info_get_num_reuses(PolyInfo, PolyInfo ^ poly_num_reuses).
+poly_info_get_const_struct_db(PolyInfo, PolyInfo ^ poly_const_struct_db).
+poly_info_get_const_struct_var_map(PolyInfo,
+    PolyInfo ^ poly_const_struct_var_map).
+poly_info_get_pred_info(PolyInfo, PolyInfo ^ poly_pred_info).
+poly_info_get_module_info(PolyInfo, PolyInfo ^ poly_module_info).
+
+:- pred poly_info_set_varset(prog_varset::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_varset_and_types(prog_varset::in, vartypes::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_typevarset(tvarset::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_tvar_kinds(tvar_kind_map::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_rtti_varmaps(rtti_varmaps::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_proofs(constraint_proof_map::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_type_info_var_map(type_info_var_map::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_typeclass_info_map(typeclass_info_map::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_int_const_map(int_const_map::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_num_reuses(int::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_const_struct_db(const_struct_db::in,
+    poly_info::in, poly_info::out) is det.
+:- pred poly_info_set_const_struct_var_map(const_struct_var_map::in,
+    poly_info::in, poly_info::out) is det.
+
+poly_info_set_varset(VarSet, !PI) :-
+    !PI ^ poly_varset := VarSet.
+poly_info_set_varset_and_types(VarSet, VarTypes, !PI) :-
+    !PI ^ poly_varset := VarSet,
+    !PI ^ poly_vartypes := VarTypes.
+poly_info_set_typevarset(TVarSet, !PI) :-
+    !PI ^ poly_typevarset := TVarSet.
+poly_info_set_tvar_kinds(TVarKinds, !PI) :-
+    !PI ^ poly_tvar_kinds := TVarKinds.
+poly_info_set_rtti_varmaps(RttiVarMaps, !PI) :-
+    !PI ^ poly_rtti_varmaps := RttiVarMaps.
+poly_info_set_proofs(Proofs, !PI) :-
+    !PI ^ poly_proof_map := Proofs.
+poly_info_set_type_info_var_map(TypeInfoVarMap, !PI) :-
+    !PI ^ poly_type_info_var_map := TypeInfoVarMap.
+poly_info_set_typeclass_info_map(TypeClassInfoMap, !PI) :-
+    !PI ^ poly_typeclass_info_map := TypeClassInfoMap.
+poly_info_set_int_const_map(IntConstMap, !PI) :-
+    !PI ^ poly_int_const_map := IntConstMap.
+poly_info_set_num_reuses(NumReuses, !PI) :-
+    !PI ^ poly_num_reuses := NumReuses.
+poly_info_set_const_struct_db(ConstStructDb, !PI) :-
+    !PI ^ poly_const_struct_db := ConstStructDb.
+poly_info_set_const_struct_var_map(ConstStructVarMap, !PI) :-
+    !PI ^ poly_const_struct_var_map := ConstStructVarMap.
+
+%---------------------------------------------------------------------------%
+
+:- type cache_maps
+    --->    cache_maps(
+                cm_snapshot_num             :: int,
+                cm_type_info_var_map        :: type_info_var_map,
+                cm_typeclass_info_map       :: typeclass_info_map,
+                cm_int_const_map            :: int_const_map,
+                cm_const_struct_var_map     :: const_struct_var_map
+            ).
+
+:- pred get_cache_maps_snapshot(string::in, cache_maps::out,
+    poly_info::in, poly_info::out) is det.
+:- pred set_cache_maps_snapshot(string::in, cache_maps::in,
+    poly_info::in, poly_info::out) is det.
+:- pred empty_cache_maps(poly_info::in, poly_info::out) is det.
+
+get_cache_maps_snapshot(Name, CacheMaps, !Info) :-
+    SnapshotNum = !.Info ^ poly_snapshot_num,
+    TypeInfoVarMap = !.Info ^ poly_type_info_var_map,
+    TypeClassInfoMap = !.Info ^ poly_typeclass_info_map,
+    IntConstMap = !.Info ^ poly_int_const_map,
+    ConstStructVarMap = !.Info ^ poly_const_struct_var_map,
+    CacheMaps = cache_maps(SnapshotNum, TypeInfoVarMap, TypeClassInfoMap,
+        IntConstMap, ConstStructVarMap),
+    !Info ^ poly_snapshot_num := SnapshotNum + 1,
+
+    trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+        some [SelectedPred, Level, IndentStr] (
+            promise_pure (
+                semipure get_selected_pred(SelectedPred),
+                semipure get_level(Level),
+                (
+                    SelectedPred = yes,
+                    Name \= ""
+                ->
+                    IndentStr = string.duplicate_char(' ', Level * 4),
+                    io.write_string(IndentStr, !IO),
+                    io.format("get_cache_maps_snapshot %d %s\n",
+                        [i(SnapshotNum), s(Name)], !IO),
+                    io.write_string(IndentStr, !IO),
+                    NumVars = varset.num_allocated(!.Info ^ poly_varset),
+                    io.format("num_allocated vars: %d\n\n", [i(NumVars)], !IO)
+                ;
+                    true
+                )
+            )
+        )
+    ).
+
+set_cache_maps_snapshot(Name, CacheMaps, !Info) :-
+    CacheMaps = cache_maps(SnapshotNum, TypeInfoVarMap, TypeClassInfoMap,
+        IntConstMap, ConstStructVarMap),
+    !Info ^ poly_type_info_var_map := TypeInfoVarMap,
+    !Info ^ poly_typeclass_info_map := TypeClassInfoMap,
+    !Info ^ poly_int_const_map := IntConstMap,
+    !Info ^ poly_const_struct_var_map := ConstStructVarMap,
+
+    trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+        some [SelectedPred, Level, IndentStr] (
+            promise_pure (
+                semipure get_selected_pred(SelectedPred),
+                semipure get_level(Level),
+                (
+                    SelectedPred = yes,
+                    Name \= ""
+                ->
+                    IndentStr = string.duplicate_char(' ', Level * 4),
+                    io.write_string(IndentStr, !IO),
+                    io.format("set_cache_maps_snapshot %d %s\n",
+                        [i(SnapshotNum), s(Name)], !IO),
+                    io.write_string(IndentStr, !IO),
+                    NumVars = varset.num_allocated(!.Info ^ poly_varset),
+                    io.format("num_allocated vars: %d\n\n", [i(NumVars)], !IO),
+
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("type_info_var_map ", !IO),
+                    io.write(CacheMaps ^ cm_type_info_var_map, !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("typeclass_info_map ", !IO),
+                    io.write(CacheMaps ^ cm_typeclass_info_map, !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("struct_var_map ", !IO),
+                    io.write(CacheMaps ^ cm_const_struct_var_map, !IO),
+                    io.nl(!IO),
+                    io.nl(!IO)
+                ;
+                    true
+                )
+            )
+        )
+    ).
+
+empty_cache_maps(!Info) :-
+    !Info ^ poly_type_info_var_map := map.init,
+    !Info ^ poly_typeclass_info_map := map.init,
+    !Info ^ poly_int_const_map := map.init,
+    !Info ^ poly_const_struct_var_map := map.init.
+
+%---------------------------------------------------------------------------%
+
+:- type var_maps
+    --->    var_maps(
+                vm_snapshot_num             :: int,
+                vm_varset                   :: prog_varset,
+                vm_vartypes                 :: vartypes,
+                vm_rtti_varmaps             :: rtti_varmaps,
+                vm_cache_maps               :: cache_maps
+            ).
+
+:- pred get_var_maps_snapshot(string::in, var_maps::out,
+    poly_info::in, poly_info::out) is det.
+
+get_var_maps_snapshot(Name, VarMaps, !Info) :-
+    SnapshotNum = !.Info ^ poly_snapshot_num,
+    VarSet = !.Info ^ poly_varset,
+    VarTypes = !.Info ^ poly_vartypes,
+    RttiVarMaps = !.Info ^ poly_rtti_varmaps,
+
+    trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+        some [SelectedPred, Level, IndentStr] (
+            promise_pure (
+                semipure get_selected_pred(SelectedPred),
+                semipure get_level(Level),
+                (
+                    SelectedPred = no
+                ;
+                    SelectedPred = yes,
+                    IndentStr = string.duplicate_char(' ', Level * 4),
+                    io.write_string(IndentStr, !IO),
+                    io.format("get_var_maps_snapshot %d %s\n",
+                        [i(SnapshotNum), s(Name)], !IO),
+                    io.write_string(IndentStr, !IO),
+                    NumVars = varset.num_allocated(VarSet),
+                    io.format("num_allocated vars: %d\n\n", [i(NumVars)], !IO)
+                )
+            )
+        )
+    ),
+
+    get_cache_maps_snapshot("", CacheMaps, !Info),
+    VarMaps = var_maps(SnapshotNum, VarSet, VarTypes, RttiVarMaps, CacheMaps).
+
+:- pred set_var_maps_snapshot(string::in, var_maps::in,
+    poly_info::in, poly_info::out) is det.
+
+set_var_maps_snapshot(Name, VarMaps, !Info) :-
+    VarMaps = var_maps(SnapshotNum, VarSet, VarTypes, RttiVarMaps, CacheMaps),
+
+    trace [compiletime(flag("debug_poly_caches")), io(!IO)] (
+        some [SelectedPred, Level, IndentStr] (
+            promise_pure (
+                semipure get_selected_pred(SelectedPred),
+                semipure get_level(Level),
+                (
+                    SelectedPred = no
+                ;
+                    SelectedPred = yes,
+                    IndentStr = string.duplicate_char(' ', Level * 4),
+                    io.write_string(IndentStr, !IO),
+                    io.format("set_var_maps_snapshot %d %s\n",
+                        [i(SnapshotNum), s(Name)], !IO),
+
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("type_info_var_map ", !IO),
+                    io.write(CacheMaps ^ cm_type_info_var_map, !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("typeclass_info_map ", !IO),
+                    io.write(CacheMaps ^ cm_typeclass_info_map, !IO),
+                    io.nl(!IO),
+                    io.write_string(IndentStr, !IO),
+                    io.write_string("struct_var_map ", !IO),
+                    io.write(CacheMaps ^ cm_const_struct_var_map, !IO),
+                    io.nl(!IO),
+                    io.nl(!IO)
+                )
+            )
+        )
+    ),
+
+    !Info ^ poly_varset := VarSet,
+    !Info ^ poly_vartypes := VarTypes,
+    !Info ^ poly_rtti_varmaps := RttiVarMaps,
+    set_cache_maps_snapshot("", CacheMaps, !Info).
+
+%---------------------------------------------------------------------------%
+:- end_module check_hlds.polymorphism.
+%---------------------------------------------------------------------------%
diff --git a/samples/Mercury/rot13_concise.m b/samples/Mercury/rot13_concise.m
new file mode 100644
index 00000000..02217b78
--- /dev/null
+++ b/samples/Mercury/rot13_concise.m
@@ -0,0 +1,58 @@
+% File: rot13_concise.m
+% Main authors: Warwick Harvey <wharvey@cs.monash.edu.au>
+%               Fergus Henderson <fjh@cs.mu.oz.au>
+%
+% rot13_concise:
+%
+% Program to read its input, apply the rot13 algorithm, and write it out
+% again.
+%
+% This version is more concise (but less efficient) than its companion,
+% rot13_verbose.
+%
+% Key features:
+% - is independent of character set (e.g. ASCII, EBCDIC)
+% - has proper error handling
+%
+
+:- module rot13_concise.
+
+:- interface.
+:- import_module io.
+
+:- pred main(state, state).
+:- mode main(di, uo) is det.
+
+:- implementation.
+:- import_module char, int, string.
+
+% The length of `alphabet' should be a multiple of `cycle'.
+alphabet = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ".
+cycle = 26.
+
+rot_n(N, Char) = RotChar :-
+	char_to_string(Char, CharString),
+	( if sub_string_search(alphabet, CharString, Index) then
+		NewIndex = (Index + N) mod cycle + cycle * (Index // cycle),
+		index_det(alphabet, NewIndex, RotChar)
+	else
+		RotChar = Char
+	).
+
+rot13(Char) = rot_n(13, Char).
+
+main -->
+	read_char(Res),
+	( { Res = ok(Char) },
+		print(rot13(Char)),
+		main
+	; { Res = eof }
+	; { Res = error(ErrorCode) },
+		{ error_message(ErrorCode, ErrorMessage) },
+		stderr_stream(StdErr),
+		print(StdErr, "rot13: error reading input: "),
+		print(StdErr, ErrorMessage),
+		nl(StdErr)
+	).
+
+
diff --git a/samples/Mercury/rot13_ralph.m b/samples/Mercury/rot13_ralph.m
new file mode 100644
index 00000000..afcd08e4
--- /dev/null
+++ b/samples/Mercury/rot13_ralph.m
@@ -0,0 +1,50 @@
+% ---------------------------------------------------------------------------- %
+% rot13_ralph.m
+% Copyright (C) 2001 Ralph Becket <rbeck@microsoft.com>
+% Tue Jan  9 18:10:44 GMT 2001
+% vim: ts=4 sw=4 et tw=0 wm=0 ff=unix ft=mercury
+%
+% Short and sweet.
+%
+% ---------------------------------------------------------------------------- %
+
+:- module rot13_ralph.
+
+:- interface.
+
+:- import_module io.
+
+
+
+:- pred main(io__state::di, io__state::uo) is det.
+
+% ---------------------------------------------------------------------------- %
+% ---------------------------------------------------------------------------- %
+
+:- implementation.
+
+:- import_module int, require.
+
+% ---------------------------------------------------------------------------- %
+
+main -->
+    io__read_byte(Result),
+    (   { Result = ok(X) },         io__write_byte(rot13(X)), main
+    ;   { Result = eof }
+    ;   { Result = error(ErrNo)},   { error(io__error_message(ErrNo)) }
+    ).
+
+% ---------------------------------------------------------------------------- %
+
+:- func rot13(int) = int.
+
+rot13(X) =
+    (      if 0'a =< X, X =< 0'z then Rot13(X, 0'a)
+      else if 0'A =< X, X =< 0'Z then Rot13(X, 0'A)
+      else X
+    )
+ :-
+    Rot13 = ( func(C, A) = ((13 + C - A) `rem` 26) + A ).
+
+% ---------------------------------------------------------------------------- %
+% ---------------------------------------------------------------------------- %
diff --git a/samples/Mercury/rot13_verbose.m b/samples/Mercury/rot13_verbose.m
new file mode 100644
index 00000000..2f3ad33e
--- /dev/null
+++ b/samples/Mercury/rot13_verbose.m
@@ -0,0 +1,116 @@
+% File: rot13_verbose.m
+% Main author: Warwick Harvey <wharvey@cs.monash.edu.au>
+% Additional input: Fergus Henderson <fjh@cs.mu.oz.au>
+
+%
+% rot13_verbose:
+%
+% Program to read its input, apply the rot13 algorithm, and write it out
+% again.
+%
+% This version is more verbose (and more efficient) than its companion,
+% rot13_concise.
+%
+% Key features:
+% - is independent of character set (e.g. ASCII, EBCDIC)
+% - has proper error handling
+% - reasonably efficient (uses a table to do the rotation)
+%
+
+:- module rot13_verbose.
+
+:- interface.
+:- import_module io.
+
+:- pred main(io__state, io__state).
+:- mode main(di, uo) is det.
+
+:- implementation.
+:- import_module char, int, require.
+
+	% rot13a/2
+	% A table to map the alphabetic characters to their rot13 equivalents
+	% (fails if the input is not alphabetic).
+:- pred rot13a(char, char).
+:- mode rot13a(in, out) is semidet.
+
+rot13a('a', 'n').
+rot13a('b', 'o').
+rot13a('c', 'p').
+rot13a('d', 'q').
+rot13a('e', 'r').
+rot13a('f', 's').
+rot13a('g', 't').
+rot13a('h', 'u').
+rot13a('i', 'v').
+rot13a('j', 'w').
+rot13a('k', 'x').
+rot13a('l', 'y').
+rot13a('m', 'z').
+rot13a('n', 'a').
+rot13a('o', 'b').
+rot13a('p', 'c').
+rot13a('q', 'd').
+rot13a('r', 'e').
+rot13a('s', 'f').
+rot13a('t', 'g').
+rot13a('u', 'h').
+rot13a('v', 'i').
+rot13a('w', 'j').
+rot13a('x', 'k').
+rot13a('y', 'l').
+rot13a('z', 'm').
+rot13a('A', 'N').
+rot13a('B', 'O').
+rot13a('C', 'P').
+rot13a('D', 'Q').
+rot13a('E', 'R').
+rot13a('F', 'S').
+rot13a('G', 'T').
+rot13a('H', 'U').
+rot13a('I', 'V').
+rot13a('J', 'W').
+rot13a('K', 'X').
+rot13a('L', 'Y').
+rot13a('M', 'Z').
+rot13a('N', 'A').
+rot13a('O', 'B').
+rot13a('P', 'C').
+rot13a('Q', 'D').
+rot13a('R', 'E').
+rot13a('S', 'F').
+rot13a('T', 'G').
+rot13a('U', 'H').
+rot13a('V', 'I').
+rot13a('W', 'J').
+rot13a('X', 'K').
+rot13a('Y', 'L').
+rot13a('Z', 'M').
+
+	% rot13/2
+	% Applies the rot13 algorithm to a character.
+:- pred rot13(char, char).
+:- mode rot13(in, out) is det.
+
+rot13(Char, RotChar) :-
+	( if rot13a(Char, TmpChar) then
+		RotChar = TmpChar
+	else
+		RotChar = Char
+	).
+
+main -->
+	io__read_char(Res),
+	( { Res = ok(Char) },
+		{ rot13(Char, RotChar) },
+		io__write_char(RotChar),
+		main
+	; { Res = eof }
+	; { Res = error(ErrorCode) },
+		{ io__error_message(ErrorCode, ErrorMessage) },
+		io__stderr_stream(StdErr),
+		io__write_string(StdErr, "rot13: error reading input: "),
+		io__write_string(StdErr, ErrorMessage),
+		io__nl(StdErr)
+	).
+
diff --git a/samples/Mercury/store.m b/samples/Mercury/store.m
new file mode 100644
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+++ b/samples/Mercury/store.m
@@ -0,0 +1,930 @@
+%-----------------------------------------------------------------------------%
+% vim: ft=mercury ts=4 sw=4 et wm=0 tw=0
+%-----------------------------------------------------------------------------%
+% Copyright (C) 1994-1997, 2000-2008, 2010-2011 The University of Melbourne.
+% This file may only be copied under the terms of the GNU Library General
+% Public License - see the file COPYING.LIB in the Mercury distribution.
+%-----------------------------------------------------------------------------%
+% 
+% File: store.m.
+% Main author: fjh.
+% Stability: low.
+% 
+% This file provides facilities for manipulating mutable stores.
+% A store can be considered a mapping from abstract keys to their values.
+% A store holds a set of nodes, each of which may contain a value of any
+% type.
+%
+% Stores may be used to implement cyclic data structures such as circular
+% linked lists, etc.
+%
+% Stores can have two different sorts of keys:
+% mutable variables (mutvars) and references (refs).
+% The difference between mutvars and refs is that mutvars can only be updated
+% atomically, whereas it is possible to update individual fields of a
+% reference one at a time (presuming the reference refers to a structured
+% term).
+% 
+%-----------------------------------------------------------------------------%
+%-----------------------------------------------------------------------------%
+
+:- module store.
+:- interface.
+
+:- import_module io.
+
+%-----------------------------------------------------------------------------%
+
+    % Stores and keys are indexed by a type S of typeclass store(S) that
+    % is used to distinguish between different stores.  By using an
+    % existential type declaration for store.new (see below), we use the
+    % type system to ensure at compile time that you never attempt to use
+    % a key from one store to access a different store.
+    %
+:- typeclass store(T) where [].
+:- type store(S).
+
+:- instance store(io.state).
+:- instance store(store(S)).
+
+    % Initialize a new store.
+    %
+:- some [S] pred store.init(store(S)::uo) is det.
+
+%-----------------------------------------------------------------------------%
+%
+% Mutvars
+%
+
+    % generic_mutvar(T, S):
+    % A mutable variable holding a value of type T in store S.
+    %
+:- type generic_mutvar(T, S).
+:- type io_mutvar(T) == generic_mutvar(T, io.state).
+:- type store_mutvar(T, S) == generic_mutvar(T, store(S)).
+
+    % Create a new mutable variable, initialized with the specified value.
+    %
+:- pred store.new_mutvar(T::in, generic_mutvar(T, S)::out, S::di, S::uo)
+    is det <= store(S).
+
+    % copy_mutvar(OldMutvar, NewMutvar, S0, S) is equivalent to the sequence
+    %   get_mutvar(OldMutvar, Value, S0, S1),
+    %   new_mutvar(NewMutvar, Value, S1, S )
+    %
+:- pred store.copy_mutvar(generic_mutvar(T, S)::in, generic_mutvar(T, S)::out,
+    S::di, S::uo) is det <= store(S).
+
+    % Lookup the value stored in a given mutable variable.
+    %
+:- pred store.get_mutvar(generic_mutvar(T, S)::in, T::out,
+    S::di, S::uo) is det <= store(S).
+
+    % Replace the value stored in a given mutable variable.
+    %
+:- pred store.set_mutvar(generic_mutvar(T, S)::in, T::in,
+    S::di, S::uo) is det <= store(S).
+
+    % new_cyclic_mutvar(Func, Mutvar):
+    %
+    % Create a new mutable variable, whose value is initialized
+    % with the value returned from the specified function `Func'.
+    % The argument passed to the function is the mutvar itself,
+    % whose value has not yet been initialized (this is safe
+    % because the function does not get passed the store, so
+    % it can't examine the uninitialized value).
+    %
+    % This predicate is useful for creating self-referential values
+    % such as circular linked lists.
+    % For example:
+    %
+    %   :- type clist(T, S) ---> node(T, mutvar(clist(T, S))).
+    %
+    %   :- pred init_cl(T::in, clist(T, S)::out,
+    %       store(S)::di, store(S)::uo) is det.
+    %
+    %   init_cl(X, CList, !Store) :-
+    %       store.new_cyclic_mutvar(func(CL) = node(X, CL), CList,
+    %       !Store).
+    %
+:- pred store.new_cyclic_mutvar((func(generic_mutvar(T, S)) = T)::in,
+    generic_mutvar(T, S)::out, S::di, S::uo) is det <= store(S).
+
+%-----------------------------------------------------------------------------%
+%
+% References
+%
+
+    % generic_ref(T, S):
+    %
+    % A reference to value of type T in store S.
+    %
+:- type generic_ref(T, S).
+:- type io_ref(T, S) == generic_ref(T, io.state).
+:- type store_ref(T, S) == generic_ref(T, store(S)).
+
+    % new_ref(Val, Ref):
+    %   /* In C: Ref = malloc(...); *Ref = Val; */
+    %
+    % Given a value of any type `T', insert a copy of the term
+    % into the store and return a new reference to that term.
+    % (This does not actually perform a copy, it just returns a view
+    % of the representation of that value.
+    % It does however allocate one cell to hold the reference;
+    % you can use new_arg_ref to avoid that.)
+    %
+:- pred store.new_ref(T::di, generic_ref(T, S)::out,
+    S::di, S::uo) is det <= store(S).
+
+    % ref_functor(Ref, Functor, Arity):
+    %
+    % Given a reference to a term, return the functor and arity
+    % of that term.
+    %
+:- pred store.ref_functor(generic_ref(T, S)::in, string::out, int::out,
+    S::di, S::uo) is det <= store(S).
+
+    % arg_ref(Ref, ArgNum, ArgRef):
+    %   /* Pseudo-C code: ArgRef = &Ref[ArgNum]; */
+    %
+    % Given a reference to a term, return a reference to
+    % the specified argument (field) of that term
+    % (argument numbers start from zero).
+    % It is an error if the argument number is out of range,
+    % or if the argument reference has the wrong type.
+    %
+:- pred store.arg_ref(generic_ref(T, S)::in, int::in,
+    generic_ref(ArgT, S)::out, S::di, S::uo) is det <= store(S).
+
+    % new_arg_ref(Val, ArgNum, ArgRef):
+    %   /* Pseudo-C code: ArgRef = &Val[ArgNum]; */
+    %
+    % Equivalent to `new_ref(Val, Ref), arg_ref(Ref, ArgNum, ArgRef)',
+    % except that it is more efficient.
+    % It is an error if the argument number is out of range,
+    % or if the argument reference has the wrong type.
+    %
+:- pred store.new_arg_ref(T::di, int::in, generic_ref(ArgT, S)::out,
+    S::di, S::uo) is det <= store(S).
+
+    % set_ref(Ref, ValueRef):
+    %   /* Pseudo-C code: *Ref = *ValueRef; */
+    %
+    % Given a reference to a term (Ref),
+    % a reference to another term (ValueRef),
+    % update the store so that the term referred to by Ref
+    % is replaced with the term referenced by ValueRef.
+    %
+:- pred store.set_ref(generic_ref(T, S)::in, generic_ref(T, S)::in,
+    S::di, S::uo) is det <= store(S).
+
+    % set_ref_value(Ref, Value):
+    %   /* Pseudo-C code: *Ref = Value; */
+    %
+    % Given a reference to a term (Ref), and a value (Value),
+    % update the store so that the term referred to by Ref
+    % is replaced with Value.
+    %
+:- pred store.set_ref_value(generic_ref(T, S)::in, T::di,
+    S::di, S::uo) is det <= store(S).
+
+    % Given a reference to a term, return that term.
+    % Note that this requires making a copy, so this pred may
+    % be inefficient if used to return large terms; it
+    % is most efficient with atomic terms.
+    % XXX current implementation buggy (does shallow copy)
+    %
+:- pred store.copy_ref_value(generic_ref(T, S)::in, T::uo,
+    S::di, S::uo) is det <= store(S).
+
+    % Same as above, but without making a copy. Destroys the store.
+    %
+:- pred store.extract_ref_value(S::di, generic_ref(T, S)::in, T::out)
+    is det <= store(S).
+
+%-----------------------------------------------------------------------------%
+%
+% Nasty performance hacks
+%
+% WARNING: use of these procedures is dangerous!
+% Use them only as a last resort, only if performance is critical, and only if
+% profiling shows that using the safe versions is a bottleneck.
+%
+% These procedures may vanish in some future version of Mercury.
+
+    % `unsafe_arg_ref' is the same as `arg_ref',
+    % and `unsafe_new_arg_ref' is the same as `new_arg_ref'
+    % except that they doesn't check for errors,
+    % and they don't work for `no_tag' types (types with
+    % exactly one functor which has exactly one argument),
+    % and they don't work for arguments which occupy a word with other
+    % arguments,
+    % and they don't work for types with >4 functors.
+    % If the argument number is out of range,
+    % or if the argument reference has the wrong type,
+    % or if the argument is a `no_tag' type,
+    % or if the argument uses a packed representation,
+    % then the behaviour is undefined, and probably harmful.
+
+:- pred store.unsafe_arg_ref(generic_ref(T, S)::in, int::in,
+    generic_ref(ArgT, S)::out, S::di, S::uo) is det <= store(S).
+
+:- pred store.unsafe_new_arg_ref(T::di, int::in, generic_ref(ArgT, S)::out,
+    S::di, S::uo) is det <= store(S).
+
+%-----------------------------------------------------------------------------%
+%-----------------------------------------------------------------------------%
+
+:- implementation.
+
+:- import_module deconstruct.
+:- import_module require.
+
+:- instance store(store(S)) where [].
+:- instance store(io.state) where [].
+
+% The store type itself is just a dummy type,
+% with no real representation.
+
+:- type store(S).
+:- pragma foreign_type("C", store(S), "MR_Word", [can_pass_as_mercury_type])
+    where equality is store_equal, comparison is store_compare.
+:- pragma foreign_type("IL", store(S), "int32", [can_pass_as_mercury_type])
+    where equality is store_equal, comparison is store_compare.
+:- pragma foreign_type("C#", store(S), "int", [can_pass_as_mercury_type])
+    where equality is store_equal, comparison is store_compare.
+:- pragma foreign_type("Java", store(S), "int", [can_pass_as_mercury_type])
+    where equality is store_equal, comparison is store_compare.
+:- pragma foreign_type("Erlang", store(S), "", [can_pass_as_mercury_type])
+    where equality is store_equal, comparison is store_compare.
+
+:- pred store_equal(store(S)::in, store(S)::in) is semidet.
+
+store_equal(_, _) :-
+    error("attempt to unify two stores").
+
+:- pred store_compare(comparison_result::uo, store(S)::in, store(S)::in)
+    is det.
+
+store_compare(_, _, _) :-
+    error("attempt to compare two stores").
+
+    % Mutvars and references are each represented as a pointer to a single word
+    % on the heap.
+:- type generic_mutvar(T, S) ---> mutvar(private_builtin.ref(T)).
+:- type generic_ref(T, S) ---> ref(private_builtin.ref(T)).
+
+store.init(S) :-
+    store.do_init(S).
+
+:- some [S] pred store.do_init(store(S)::uo) is det.
+
+:- pragma foreign_proc("C",
+    store.do_init(_S0::uo),
+    [will_not_call_mercury, promise_pure, will_not_modify_trail],
+"
+    TypeInfo_for_S = 0;
+").
+:- pragma foreign_proc("C#",
+    store.do_init(_S0::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    TypeInfo_for_S = null;
+").
+:- pragma foreign_proc("Java",
+    store.do_init(_S0::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    TypeInfo_for_S = null;
+").
+:- pragma foreign_proc("Erlang",
+    store.do_init(_S0::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    TypeInfo_for_S = 'XXX'
+").
+
+% Note -- the syntax for the operations on stores
+% might be nicer if we used some new operators, e.g.
+%
+%   :- op(.., xfx, ('<-')).
+%   :- op(.., fy, ('!')).
+%   :- op(.., xfx, (':=')).
+%
+% Then we could do something like this:
+%
+%   Ptr <- new(Val)   -->   new_mutvar(Val, Ptr).
+%   Val <- !Ptr       -->   get_mutvar(Ptr, Val).
+%   !Ptr := Val   -->   set_mutvar(Ptr, Val).
+%
+% I wonder whether it is worth it?  Hmm, probably not.
+
+:- pragma foreign_proc("C",
+    new_mutvar(Val::in, Mutvar::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure, will_not_modify_trail],
+"
+    MR_offset_incr_hp_msg(Mutvar, MR_SIZE_SLOT_SIZE, MR_SIZE_SLOT_SIZE + 1,
+        MR_ALLOC_ID, ""store.mutvar/2"");
+    MR_define_size_slot(0, Mutvar, 1);
+    * (MR_Word *) Mutvar = Val;
+    S = S0;
+").
+
+:- pragma foreign_proc("C",
+    get_mutvar(Mutvar::in, Val::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure, will_not_modify_trail],
+"
+    Val = * (MR_Word *) Mutvar;
+    S = S0;
+").
+
+:- pragma foreign_proc("C",
+    set_mutvar(Mutvar::in, Val::in, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure, will_not_modify_trail],
+"
+    * (MR_Word *) Mutvar = Val;
+    S = S0;
+").
+
+:- pragma foreign_type("C#", generic_mutvar(T, S), "object[]").
+
+:- pragma foreign_proc("C#",
+    new_mutvar(Val::in, Mutvar::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Mutvar = new object[] { Val };
+").
+
+:- pragma foreign_proc("C#",
+    get_mutvar(Mutvar::in, Val::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Val = Mutvar[0];
+").
+
+:- pragma foreign_proc("C#",
+    set_mutvar(Mutvar::in, Val::in, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Mutvar[0] = Val;
+").
+
+:- pragma foreign_type("Java", generic_mutvar(T, S), "mutvar.Mutvar").
+
+:- pragma foreign_proc("Java",
+    new_mutvar(Val::in, Mutvar::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Mutvar = new mutvar.Mutvar(Val);
+").
+
+:- pragma foreign_proc("Java",
+    get_mutvar(Mutvar::in, Val::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Val = Mutvar.object;
+").
+
+:- pragma foreign_proc("Java",
+    set_mutvar(Mutvar::in, Val::in, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Mutvar.object = Val;
+").
+
+% XXX ets are not garbage collected
+% but shareable between processes
+
+:- pragma foreign_type("Erlang", generic_mutvar(T, S), "").
+
+:- pragma foreign_proc("Erlang",
+    new_mutvar(Val::in, Mutvar::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Mutvar = ets:new(mutvar, [set, public]),
+    ets:insert(Mutvar, {value, Val}),
+    S = S0
+").
+
+:- pragma foreign_proc("Erlang",
+    get_mutvar(Mutvar::in, Val::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    [{value, Val}] = ets:lookup(Mutvar, value),
+    S = S0
+").
+
+:- pragma foreign_proc("Erlang",
+    set_mutvar(Mutvar::in, Val::in, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    ets:insert(Mutvar, {value, Val}),
+    S = S0
+").
+
+copy_mutvar(Mutvar, Copy, !S) :-
+    get_mutvar(Mutvar, Value, !S),
+    new_mutvar(Value, Copy, !S).
+
+:- pred store.unsafe_new_uninitialized_mutvar(generic_mutvar(T, S)::out,
+    S::di, S::uo) is det <= store(S).
+
+:- pragma foreign_proc("C",
+    unsafe_new_uninitialized_mutvar(Mutvar::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure, will_not_modify_trail],
+"
+    MR_offset_incr_hp_msg(Mutvar, MR_SIZE_SLOT_SIZE, MR_SIZE_SLOT_SIZE + 1,
+        MR_ALLOC_ID, ""store.mutvar/2"");
+    MR_define_size_slot(0, Mutvar, 1);
+    S = S0;
+").
+
+:- pragma foreign_proc("C#",
+    unsafe_new_uninitialized_mutvar(Mutvar::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Mutvar = new object[1];
+").
+
+:- pragma foreign_proc("Java",
+    unsafe_new_uninitialized_mutvar(Mutvar::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Mutvar = new mutvar.Mutvar();
+").
+
+store.new_cyclic_mutvar(Func, MutVar, !Store) :-
+    store.unsafe_new_uninitialized_mutvar(MutVar, !Store),
+    Value = apply(Func, MutVar),
+    store.set_mutvar(MutVar, Value, !Store).
+
+%-----------------------------------------------------------------------------%
+
+:- pragma foreign_type("C#", generic_ref(T, S), "store.Ref").
+:- pragma foreign_code("C#",
+"
+    public class Ref {
+        // Object referenced.
+        public object   obj;
+
+        // Specific field of object referenced, or null to
+        // specify the object itself.
+        // XXX GetFields does not return fields in any particular order so
+        // this is not really usable.
+        public System.Reflection.FieldInfo  field;
+
+        // Constructors
+        public Ref(object init) {
+            obj     = init;
+            field   = null;
+        }
+        public Ref(object init, int num) {
+            obj = init;
+            setField(num);
+        }
+
+        // Set the field according to a given index.
+        public void setField(int num) {
+            field = obj.GetType().GetFields()[num];
+        }
+
+        // Return the value of the reference.
+        public object getValue() {
+            if (field == null) {
+                return obj;
+            } else {
+                return field.GetValue(obj);
+            }
+        }
+
+        // Update the value of the reference.
+        public void setValue(object value) {
+            field.SetValue(obj, value);
+        }
+    } // class Ref
+").
+
+:- pragma foreign_type(java, generic_ref(T, S), "store.Ref").
+:- pragma foreign_code("Java",
+"
+    public static class Ref {
+        // Object referenced.
+        public java.lang.Object         object;
+
+        // Specific field of object referenced, or null to
+        // specify the object itself.
+        // XXX getDeclaredFields does not return fields in any particular
+        // order so this is not really usable.
+        public java.lang.reflect.Field  field;
+
+        // Constructors
+        public Ref(java.lang.Object init) {
+            object  = init;
+            field   = null;
+        }
+        public Ref(java.lang.Object init, int num) {
+            object  = init;
+            setField(num);
+        }
+
+        // Set the field according to a given index.
+        public void setField(int num) {
+            try {
+                field = object.getClass().getDeclaredFields()[num];
+            } catch (java.lang.SecurityException se) {
+                throw new java.lang.RuntimeException(
+                    ""Security manager denied access to object fields"");
+            } catch (java.lang.ArrayIndexOutOfBoundsException e) {
+                throw new java.lang.RuntimeException(
+                    ""No such field in object"");
+            } catch (java.lang.Exception e) {
+                throw new java.lang.RuntimeException(
+                    ""Unable to set field: "" + e.getMessage());
+            }
+        }
+
+        // Return the value of the reference.
+        public java.lang.Object getValue() {
+            if (field == null) {
+                return object;
+            } else {
+                try {
+                    return field.get(object);
+                } catch (java.lang.IllegalAccessException e) {
+                    throw new java.lang.RuntimeException(
+                        ""Field inaccessible"");
+                } catch (java.lang.IllegalArgumentException e)
+                {
+                    throw new java.lang.RuntimeException(
+                        ""Field-object mismatch"");
+                } catch (java.lang.NullPointerException e) {
+                    throw new java.lang.RuntimeException(
+                        ""Object is null"");
+                } catch (java.lang.Exception e) {
+                    throw new java.lang.RuntimeException(
+                        ""Unable to access field: "" + e.getMessage());
+                }
+            }
+        }
+
+        // Update the value of the reference.
+        public void setValue(java.lang.Object value) {
+            try {
+                field.set(object, value);
+            } catch (java.lang.IllegalAccessException e) {
+                throw new java.lang.RuntimeException(""Field inaccessible"");
+            } catch (java.lang.IllegalArgumentException e) {
+                throw new java.lang.RuntimeException(
+                    ""Field-object mismatch"");
+            } catch (java.lang.NullPointerException e) {
+                throw new java.lang.RuntimeException(""Object is null"");
+            } catch (java.lang.Exception e) {
+                throw new java.lang.RuntimeException(
+                        ""Unable to access field: "" + e.getMessage());
+            }
+        }
+    } // class Ref
+").
+
+:- pragma foreign_proc("C",
+    new_ref(Val::di, Ref::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure, will_not_modify_trail],
+"
+    MR_offset_incr_hp_msg(Ref, MR_SIZE_SLOT_SIZE, MR_SIZE_SLOT_SIZE + 1,
+        MR_ALLOC_ID, ""store.ref/2"");
+    MR_define_size_slot(0, Ref, 1);
+    * (MR_Word *) Ref = Val;
+    S = S0;
+").
+
+:- pragma foreign_proc("C#",
+    new_ref(Val::di, Ref::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Ref = new store.Ref(Val);
+").
+
+:- pragma foreign_proc("Java",
+    new_ref(Val::di, Ref::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Ref = new store.Ref(Val);
+").
+
+:- pragma foreign_proc("Erlang",
+    new_ref(Val::di, Ref::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Ref = ets:new(mutvar, [set, public]),
+    ets:insert(Ref, {value, Val}),
+    S = S0
+").
+
+copy_ref_value(Ref, Val) -->
+    % XXX Need to deep-copy non-atomic types.
+    unsafe_ref_value(Ref, Val).
+
+    % Unsafe_ref_value extracts the value that a reference refers to, without
+    % making a copy; it is unsafe because the store could later be modified,
+    % changing the returned value.
+    %
+:- pred store.unsafe_ref_value(generic_ref(T, S)::in, T::uo,
+    S::di, S::uo) is det <= store(S).
+
+:- pragma foreign_proc("C",
+    unsafe_ref_value(Ref::in, Val::uo, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure, will_not_modify_trail],
+"
+    Val = * (MR_Word *) Ref;
+    S = S0;
+").
+
+:- pragma foreign_proc("C#",
+    unsafe_ref_value(Ref::in, Val::uo, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Val = Ref.getValue();
+").
+
+:- pragma foreign_proc("Java",
+    unsafe_ref_value(Ref::in, Val::uo, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Val = Ref.getValue();
+").
+
+:- pragma foreign_proc("Erlang",
+    unsafe_ref_value(Ref::in, Val::uo, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    [{value, Val}] = ets:lookup(Ref, value),
+    S = S0
+").
+
+ref_functor(Ref, Functor, Arity, !Store) :-
+    unsafe_ref_value(Ref, Val, !Store),
+    functor(Val, canonicalize, Functor, Arity).
+
+:- pragma foreign_decl("C",
+"
+    #include ""mercury_type_info.h""
+    #include ""mercury_heap.h""
+    #include ""mercury_misc.h""         /* for MR_fatal_error() */
+    #include ""mercury_deconstruct.h""  /* for MR_arg() */
+").
+
+:- pragma foreign_proc("C",
+    arg_ref(Ref::in, ArgNum::in, ArgRef::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure, may_not_duplicate],
+"{
+    MR_TypeInfo         type_info;
+    MR_TypeInfo         arg_type_info;
+    MR_TypeInfo         exp_arg_type_info;
+    MR_Word             *arg_ref;
+    const MR_DuArgLocn  *arg_locn;
+
+    type_info = (MR_TypeInfo) TypeInfo_for_T;
+    exp_arg_type_info = (MR_TypeInfo) TypeInfo_for_ArgT;
+
+    MR_save_transient_registers();
+
+    if (!MR_arg(type_info, (MR_Word *) Ref, ArgNum, &arg_type_info,
+        &arg_ref, &arg_locn, MR_NONCANON_ABORT))
+    {
+        MR_fatal_error(""store.arg_ref: argument number out of range"");
+    }
+
+    if (MR_compare_type_info(arg_type_info, exp_arg_type_info) !=
+        MR_COMPARE_EQUAL)
+    {
+        MR_fatal_error(""store.arg_ref: argument has wrong type"");
+    }
+
+    MR_restore_transient_registers();
+
+    if (arg_locn != NULL && arg_locn->MR_arg_bits != 0) {
+        MR_offset_incr_hp_msg(ArgRef, MR_SIZE_SLOT_SIZE,
+            MR_SIZE_SLOT_SIZE + 1, MR_ALLOC_ID, ""store.ref/2"");
+        MR_define_size_slot(0, ArgRef, 1);
+        * (MR_Word *) ArgRef = MR_arg_value(arg_ref, arg_locn);
+    } else {
+        ArgRef = (MR_Word) arg_ref;
+    }
+    S = S0;
+}").
+
+:- pragma foreign_proc("C#",
+    arg_ref(Ref::in, ArgNum::in, ArgRef::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    /*
+    ** XXX Some dynamic type-checking should be done here to check that
+    ** the type of the specified Arg matches the type supplied by the caller.
+    ** This will require RTTI.
+    */
+
+    ArgRef = new store.Ref(Ref.getValue(), ArgNum);
+").
+
+:- pragma foreign_proc("Java",
+    arg_ref(Ref::in, ArgNum::in, ArgRef::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    /*
+    ** XXX Some dynamic type-checking should be done here to check that
+    ** the type of the specified Arg matches the type supplied by the caller.
+    ** This will require RTTI.
+    */
+
+    ArgRef = new store.Ref(Ref.getValue(), ArgNum);
+").
+
+:- pragma foreign_proc("C",
+    new_arg_ref(Val::di, ArgNum::in, ArgRef::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure, may_not_duplicate],
+"{
+    MR_TypeInfo         type_info;
+    MR_TypeInfo         arg_type_info;
+    MR_TypeInfo         exp_arg_type_info;
+    MR_Word             *arg_ref;
+    const MR_DuArgLocn  *arg_locn;
+
+    type_info = (MR_TypeInfo) TypeInfo_for_T;
+    exp_arg_type_info = (MR_TypeInfo) TypeInfo_for_ArgT;
+
+    MR_save_transient_registers();
+
+    if (!MR_arg(type_info, (MR_Word *) &Val, ArgNum, &arg_type_info,
+        &arg_ref, &arg_locn, MR_NONCANON_ABORT))
+    {
+        MR_fatal_error(""store.new_arg_ref: argument number out of range"");
+    }
+
+    if (MR_compare_type_info(arg_type_info, exp_arg_type_info) !=
+        MR_COMPARE_EQUAL)
+    {
+        MR_fatal_error(""store.new_arg_ref: argument has wrong type"");
+    }
+
+    MR_restore_transient_registers();
+
+    if (arg_locn != NULL && arg_locn->MR_arg_bits != 0) {
+        MR_offset_incr_hp_msg(ArgRef, MR_SIZE_SLOT_SIZE,
+            MR_SIZE_SLOT_SIZE + 1, MR_ALLOC_ID, ""store.ref/2"");
+        MR_define_size_slot(0, ArgRef, 1);
+        * (MR_Word *) ArgRef = MR_arg_value(arg_ref, arg_locn);
+    } else if (arg_ref == &Val) {
+        /*
+        ** For no_tag types, the argument may have the same address as the
+        ** term.  Since the term (Val) is currently on the C stack, we can't
+        ** return a pointer to it; so if that is the case, then we need
+        ** to copy it to the heap before returning.
+        */
+
+        MR_offset_incr_hp_msg(ArgRef, MR_SIZE_SLOT_SIZE,
+            MR_SIZE_SLOT_SIZE + 1, MR_ALLOC_ID, ""store.ref/2"");
+        MR_define_size_slot(0, ArgRef, 1);
+        * (MR_Word *) ArgRef = Val;
+    } else {
+        ArgRef = (MR_Word) arg_ref;
+    }
+    S = S0;
+}").
+
+:- pragma foreign_proc("C#",
+    new_arg_ref(Val::di, ArgNum::in, ArgRef::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    /*
+    ** XXX Some dynamic type-checking should be done here to check that
+    ** the type of the specified Arg matches the type supplied by the caller.
+    ** This will require RTTI.
+    */
+
+    ArgRef = new store.Ref(Val, ArgNum);
+").
+
+:- pragma foreign_proc("Java",
+    new_arg_ref(Val::di, ArgNum::in, ArgRef::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    /*
+    ** XXX Some dynamic type-checking should be done here to check that
+    ** the type of the specified Arg matches the type supplied by the caller.
+    ** This will require RTTI.
+    */
+
+    ArgRef = new store.Ref(Val, ArgNum);
+").
+
+:- pragma foreign_proc("C",
+    set_ref(Ref::in, ValRef::in, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    * (MR_Word *) Ref = * (MR_Word *) ValRef;
+    S = S0;
+").
+
+:- pragma foreign_proc("C#",
+    set_ref(Ref::in, ValRef::in, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Ref.setValue(ValRef.getValue());
+").
+
+:- pragma foreign_proc("Java",
+    set_ref(Ref::in, ValRef::in, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Ref.setValue(ValRef.getValue());
+").
+
+:- pragma foreign_proc("C",
+    set_ref_value(Ref::in, Val::di, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    * (MR_Word *) Ref = Val;
+    S = S0;
+").
+
+:- pragma foreign_proc("Java",
+    set_ref_value(Ref::in, Val::di, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    Ref.setValue(Val);
+").
+
+:- pragma foreign_proc("C",
+    extract_ref_value(_S::di, Ref::in, Val::out),
+    [will_not_call_mercury, promise_pure],
+"
+    Val = * (MR_Word *) Ref;
+").
+
+:- pragma foreign_proc("C#",
+    extract_ref_value(_S::di, Ref::in, Val::out),
+    [will_not_call_mercury, promise_pure],
+"
+    Val = Ref.getValue();
+").
+
+:- pragma foreign_proc("Java",
+    extract_ref_value(_S::di, Ref::in, Val::out),
+    [will_not_call_mercury, promise_pure],
+"
+    Val = Ref.getValue();
+").
+
+%-----------------------------------------------------------------------------%
+
+:- pragma foreign_proc("C",
+    unsafe_arg_ref(Ref::in, Arg::in, ArgRef::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure],
+"{
+    /* unsafe - does not check type & arity, won't handle no_tag types */
+    MR_Word *Ptr;
+
+    Ptr = (MR_Word *) MR_strip_tag((MR_Word) Ref);
+    ArgRef = (MR_Word) &Ptr[Arg];
+    S = S0;
+}").
+
+:- pragma foreign_proc("C#",
+    unsafe_arg_ref(Ref::in, Arg::in, ArgRef::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    ArgRef = new store.Ref(Ref.getValue(), Arg);
+").
+
+:- pragma foreign_proc("Java",
+    unsafe_arg_ref(Ref::in, Arg::in, ArgRef::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    ArgRef = new store.Ref(Ref.getValue(), Arg);
+").
+
+:- pragma foreign_proc("C",
+    unsafe_new_arg_ref(Val::di, Arg::in, ArgRef::out, S0::di, S::uo),
+    [will_not_call_mercury, promise_pure],
+"{
+    /* unsafe - does not check type & arity, won't handle no_tag types */
+    MR_Word *Ptr;
+
+    Ptr = (MR_Word *) MR_strip_tag((MR_Word) Val);
+    ArgRef = (MR_Word) &Ptr[Arg];
+    S = S0;
+}").
+
+:- pragma foreign_proc("C#",
+    unsafe_new_arg_ref(Val::di, Arg::in, ArgRef::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    ArgRef = new store.Ref(Val, Arg);
+").
+
+:- pragma foreign_proc("Java",
+    unsafe_new_arg_ref(Val::di, Arg::in, ArgRef::out, _S0::di, _S::uo),
+    [will_not_call_mercury, promise_pure],
+"
+    ArgRef = new store.Ref(Val, Arg);
+").
diff --git a/samples/Moocode/hello.moo b/samples/Moocode/hello.moo
new file mode 100644
index 00000000..ba9dda3a
--- /dev/null
+++ b/samples/Moocode/hello.moo
@@ -0,0 +1,5 @@
+@program toy:wind
+this.wound = this.wound + 2;
+player:tell("You wind up the ", this.name,".");
+player.location:announce(player.name, " winds up the ", this.name,".");
+.
diff --git a/samples/Moocode/moocode_toolkit.moo b/samples/Moocode/moocode_toolkit.moo
new file mode 100644
index 00000000..daa69f04
--- /dev/null
+++ b/samples/Moocode/moocode_toolkit.moo
@@ -0,0 +1,2196 @@
+;; while (read(player) != ".") endwhile
+
+I M P O R T A N T
+=================
+
+The following code cannot be used as is.  You will need to rewrite
+functionality that is not present in your server/core.  The most
+straight-forward target (other than Stunt/Improvise) is a server/core
+that provides a map datatype and anonymous objects.
+
+Installation in my server uses the following object numbers:
+
+#36819 -> MOOcode Experimental Language Package
+  #36820 -> Changelog
+  #36821 -> Dictionary
+  #36822 -> MOOcode Compiler
+  #38128 -> Syntax Tree Pretty Printer
+  #37644 -> Tokenizer Prototype
+  #37645 -> Parser Prototype
+  #37648 -> Symbol Prototype
+  #37649 -> Literal Prototype
+  #37650 -> Statement Prototype
+  #37651 -> Operator Prototype
+  #37652 -> Control Flow Statement Prototype
+  #37653 -> Assignment Operator Prototype
+  #38140 -> Compound Assignment Operator Prototype
+  #38123 -> Prefix Operator Prototype
+  #37654 -> Infix Operator Prototype
+  #37655 -> Name Prototype
+  #37656 -> Bracket Operator Prototype
+  #37657 -> Brace Operator Prototype
+  #37658 -> If Statement Prototype
+  #38119 -> For Statement Prototype
+  #38120 -> Loop Statement Prototype
+  #38126 -> Fork Statement Prototype
+  #38127 -> Try Statement Prototype
+  #37659 -> Invocation Operator Prototype
+  #37660 -> Verb Selector Operator Prototype
+  #37661 -> Property Selector Operator Prototype
+  #38124 -> Error Catching Operator Prototype
+  #38122 -> Positional Symbol Prototype
+  #38141 -> From Statement Prototype
+  #37662 -> Utilities
+#36823 -> MOOcode Experimental Language Package Tests
+  #36824 -> MOOcode Compiler Tests
+  #37646 -> Tokenizer Tests
+  #37647 -> Parser Tests
+.
+
+; /* BASE */
+
+; parent($plastic.tokenizer_proto)
+
+@program _:_ensure_prototype as application/x-moocode
+(typeof(this) == OBJ) || raise(E_INVARG, "Callable on prototypes only");
+.
+
+@program _:_ensure_instance as application/x-moocode
+(typeof(this) == ANON) || raise(E_INVARG, "Callable on instances only");
+.
+
+; /* COMPILER */
+
+@program $plastic.compiler:_lookup as application/x-moocode
+$private();
+
+this:_ensure_instance();
+
+{name} = args;
+
+if (`value = this.variable_map[name] ! E_RANGE')
+  return value;
+elseif (name in this.variable_map || name in this.reserved_names)
+  value = name;
+  while (value in this.variable_map || value in this.reserved_names)
+    value = tostr("_", value);
+  endwhile
+  this.variable_map[name] = value;
+  return value;
+else
+  value = name;
+  this.variable_map[name] = value;
+  return value;
+endif
+.
+
+@program $plastic.compiler:_generate as application/x-moocode
+$private();
+
+this:_ensure_instance();
+
+{name} = args;
+
+if (`value = this.variable_map[name] ! E_RANGE')
+  return value;
+else
+  value = tostr("_", random());
+  while (value in this.variable_map || value in this.reserved_names)
+    value = tostr("_", random());
+  endwhile
+  this.variable_map[name] = value;
+  return value;
+endif
+.
+
+@program $plastic.compiler:compile as application/x-moocode
+this:_ensure_prototype();
+
+{source, ?options = []} = args;
+
+tokenizer = this.plastic.tokenizer_proto:create(source);
+parser = this.plastic.parser_proto:create(tokenizer);
+compiler = create(this, 1);
+
+try
+  statements = parser:statements();
+except ex (ANY)
+  return {0, {tostr("Line ", ex[3].tokenizer.row, ":  ", ex[2])}};
+endtry
+
+source = {};
+
+for statement in (statements)
+  if (statement.type != "statement")
+    source = {@source, tostr(compiler:p(statement), ";")};
+  else
+    source = {@source, @compiler:p(statement)};
+  endif
+endfor
+
+return {1, source};
+.
+
+@program $plastic.compiler:p as application/x-moocode
+this:_ensure_instance();
+
+{statement} = args;
+
+ticks_left() < 10000 || seconds_left() < 2 && suspend(0);
+
+if (statement.type == "variable")
+  return this:_lookup(statement.value);
+elseif (statement.type == "unique")
+  return this:_generate(statement.value);
+elseif (isa(statement, this.plastic.sign_operator_proto))
+  if (statement.type == "unary")
+    return tostr(statement.value == "-" ? "-" | "", this:p(statement.first));
+  else
+    return tostr("(", this:p(statement.first), " ", statement.value, " ", this:p(statement.second), ")");
+  endif
+
+elseif (isa(statement, this.plastic.control_flow_statement_proto))
+  if ((first = statement.first) != 0)
+    return {tostr(statement.id, " " , this:p(first), ";")};
+  else
+    return {tostr(statement.id, ";")};
+  endif
+
+elseif (isa(statement, this.plastic.if_statement_proto))
+  value =  statement.value;
+
+  code = {tostr("if (", this:p(value[1]), ")")};
+
+  for s in (value[2])
+    if (respond_to(s, "std"))
+      code = {@code, @this:p(s)};
+    else
+      code = {@code, this:p(s) + ";"};
+    endif
+  endfor
+
+  i = 3;
+  while (length(value) >= i && typeof(value[i]) != LIST)
+    code = {@code, tostr("elseif (", this:p(value[i]), ")")};
+
+    i = i + 1;
+
+    for s in (value[i])
+      if (respond_to(s, "std"))
+        code = {@code, @this:p(s)};
+      else
+        code = {@code, this:p(s) + ";"};
+      endif
+    endfor
+
+    i = i + 1;
+  endwhile
+
+  if (length(value) == i)
+    code = {@code, "else"};
+
+    for s in (value[i])
+      if (respond_to(s, "std"))
+        code = {@code, @this:p(s)};
+      else
+        code = {@code, this:p(s) + ";"};
+      endif
+    endfor
+  endif
+
+  code = {@code, "endif"};
+
+  return code;
+
+elseif (isa(statement, this.plastic.for_statement_proto))
+  value =  statement.value;
+
+  if (statement.subtype == "range")
+    code = {tostr("for ", this:p(value[1]), " in [", this:p(value[2]), "..", this:p(value[3]), "]")};
+    statements = value[4];
+  elseif (length(value) == 4)
+    code = {tostr("for ", this:p(value[1]), ", ", this:p(value[2]), " in (", this:p(value[3]), ")")};
+    statements = value[4];
+  else
+    code = {tostr("for ", this:p(value[1]), " in (", this:p(value[2]), ")")};
+    statements = value[3];
+  endif
+
+  for s in (statements)
+    if (respond_to(s, "std"))
+      code = {@code, @this:p(s)};
+    else
+      code = {@code, this:p(s) + ";"};
+    endif
+  endfor
+
+  code = {@code, "endfor"};
+
+  return code;
+
+elseif (isa(statement, this.plastic.loop_statement_proto))
+  value =  statement.value;
+
+  i = 0;
+
+  if (length(value) > 2)
+    prefix = tostr("while ", this:p(value[i = i + 1]));
+  else
+    prefix = tostr("while");
+  endif
+
+  if (statement.id == "while")
+    code = {tostr(prefix, " (", this:p(value[i = i + 1]), ")")};
+  else
+    code = {tostr(prefix, " (!(", this:p(value[i = i + 1]), "))")};
+  endif
+
+  for s in (value[i = i + 1])
+    if (respond_to(s, "std"))
+      code = {@code, @this:p(s)};
+    else
+      code = {@code, this:p(s) + ";"};
+    endif
+  endfor
+
+  code = {@code, "endwhile"};
+
+  return code;
+
+elseif (isa(statement, this.plastic.fork_statement_proto))
+  value =  statement.value;
+
+  i = 0;
+
+  if (length(value) > 2)
+    code = {tostr("fork ", this:p(value[i = i + 1]), " (", this:p(value[i = i + 1]), ")")};
+  else
+    code = {tostr("fork", " (", this:p(value[i = i + 1]), ")")};
+  endif
+
+  for s in (value[i = i + 1])
+    if (respond_to(s, "std"))
+      code = {@code, @this:p(s)};
+    else
+      code = {@code, this:p(s) + ";"};
+    endif
+  endfor
+
+  code = {@code, "endfork"};
+
+  return code;
+
+elseif (isa(statement, this.plastic.try_statement_proto))
+  value =  statement.value;
+
+  code = {"try"};
+
+  for s in (value[1])
+    if (respond_to(s, "std"))
+      code = {@code, @this:p(s)};
+    else
+      code = {@code, this:p(s) + ";"};
+    endif
+  endfor
+
+  if (statement.subtype == "finally")
+    code = {@code, "finally"};
+
+    for s in (value[2])
+      if (respond_to(s, "std"))
+        code = {@code, @this:p(s)};
+      else
+        code = {@code, this:p(s) + ";"};
+      endif
+    endfor
+
+  else
+    for value in (value[2..$])
+      if (length(value) == 3)
+        x = {};
+        for s in (value[2])
+          x = {@x, this:p(s)};
+        endfor
+
+        code = {@code, tostr("except ", this:p(value[1]), " (", x:join(", "), ")")};
+        statements = value[3];
+
+      else
+        x = {};
+        for s in (value[1])
+          x = {@x, this:p(s)};
+        endfor
+
+        code = {@code, tostr("except (", x:join(", "), ")")};
+        statements = value[2];
+
+      endif
+
+      for s in (statements)
+        if (respond_to(s, "std"))
+          code = {@code, @this:p(s)};
+        else
+          code = {@code, this:p(s) + ";"};
+        endif
+      endfor
+
+    endfor
+  endif
+
+  code = {@code, "endtry"};
+
+  return code;
+
+elseif (isa(statement, this.plastic.assignment_operator_proto))
+  if (statement.first.type == "pattern")
+    res = "{";
+    rest = 0;
+    for v in (statement.first.value)
+      if (v.type == "unary")
+        v = tostr("@", this:p(v.first));
+      elseif (v.type == "binary")
+        v = tostr("?", this:p(v.first), " = ", this:p(v.second));
+      else
+        v = this:p(v);
+      endif
+      res = tostr(res, (rest ? ", " | ""), v);
+      rest = 1;
+    endfor
+    res = tostr(res, "}");
+    return tostr("(", res, " ", statement.value, " ", this:p(statement.second), ")");
+  else
+    return tostr("(", this:p(statement.first), " ", statement.value, " ", this:p(statement.second), ")");
+  endif
+
+elseif (isa(statement, this.plastic.bracket_operator_proto))
+  if (statement.type == "ternary")
+    return tostr("(", this:p(statement.first), "[", this:p(statement.second), "..", this:p(statement.third), "])");
+  elseif (statement.type == "binary")
+    return tostr("(", this:p(statement.first), "[", this:p(statement.second), "])");
+  else
+    res = "[";
+    first = 1;
+    for v in (statement.value)
+      ticks_left() < 10000 || seconds_left() < 2 && suspend(0);
+      res = tostr(res, (first ? "" | ", "), this:p(v[1]), " -> ", this:p(v[2]));
+      first = 0;
+    endfor
+    res = tostr(res, "]");
+    return res;
+    return {res};
+  endif
+
+elseif (isa(statement, this.plastic.brace_operator_proto))
+  res = "{";
+  first = 1;
+  for v in (statement.value)
+    ticks_left() < 10000 || seconds_left() < 2 && suspend(0);
+    res = tostr(res, (first ? "" | ", "), this:p(v));
+    first = 0;
+  endfor
+  res = tostr(res, "}");
+  return res;
+
+elseif (isa(statement, this.plastic.invocation_operator_proto))
+  if (statement.type == "ternary")
+    a = {};
+    for v in (statement.third)
+      a = {@a, this:p(v)};
+    endfor
+    if (statement.second.type == "identifier")
+      return tostr(this:p(statement.first), ":", this:p(statement.second), "(", a:join(", "), ")");
+    else
+      return tostr(this:p(statement.first), ":(", this:p(statement.second), ")(", a:join(", "), ")");
+    endif
+  elseif (statement.type == "binary")
+    a = {};
+    for v in (statement.second)
+      a = {@a, this:p(v)};
+    endfor
+    return tostr(this:p(statement.first), "(", a:join(", "), ")");
+  else
+    return tostr(this:p(statement.first));
+  endif
+
+elseif (isa(statement, this.plastic.property_selector_operator_proto))
+  if (statement.second.type == "identifier")
+    return tostr(this:p(statement.first), ".", this:p(statement.second));
+  else
+    return tostr(this:p(statement.first), ".(", this:p(statement.second) + ")");
+  endif
+
+elseif (isa(statement, this.plastic.error_catching_operator_proto))
+  if (statement.type == "unary")
+    return tostr(statement.value, this:p(statement.first));
+  endif
+
+  x = {};
+  for s in (statement.second)
+    x = {@x, this:p(s)};
+  endfor
+
+  second = x:join(", ");
+
+  if (statement.type == "ternary")
+    return tostr("`", this:p(statement.first), " ! ", second, " => ", this:p(statement.third), "'");
+  else
+    return tostr("`", this:p(statement.first), " ! ", second, "'");
+  endif
+
+elseif (isa(statement, this.plastic.literal_proto))
+  return toliteral(statement.value);
+elseif (isa(statement, this.plastic.positional_symbol_proto))
+  return statement.value;
+elseif (isa(statement, this.plastic.prefix_operator_proto))
+  return tostr(statement.value, this:p(statement.first));
+elseif (isa(statement, this.plastic.infix_operator_proto))
+  value = statement.value;
+  value = (value != "**") ? value | "^";
+  return tostr("(", this:p(statement.first), " ", value, " ", this:p(statement.second), ")");
+elseif (isa(statement, this.plastic.traditional_ternary_operator_proto))
+  return tostr("(", this:p(statement.first), " ? ", this:p(statement.second), " | ", this:p(statement.third), ")");
+elseif (isa(statement, this.plastic.name_proto))
+  return statement.value;
+else
+  raise(E_INVARG);
+endif
+.
+
+; /* PRINTER */
+
+@program $plastic.printer:_print as application/x-moocode
+{statement, ?indent = ""} = args;
+
+if (typeof(statement) == LIST)
+  result = {tostr(indent, "-")};
+
+  for item in (statement)
+    result = {@result, @this:_print(item, indent + "  ")};
+  endfor
+
+  return result;
+endif
+
+if (`typeof(statement.value) == LIST ! ANY')
+  result = {tostr(indent, statement.id, " : ", statement.type)};
+
+  for value in (statement.value)
+    result = {@result, @this:_print(value, indent + "  ")};
+  endfor
+else
+  result = {tostr(indent, typeof(statement.value) == ERR ? toliteral(statement.value) | statement.value, " : ", statement.type)};
+
+  for prop in ({"first", "second", "third"})
+    if (`value = statement.(prop) ! E_PROPNF' != E_PROPNF && value != 0)
+      result = {@result, @this:_print(value, indent + "  ")};
+    endif
+  endfor
+endif
+
+return result;
+.
+
+@program $plastic.printer:print as application/x-moocode
+{source, ?options = []} = args;
+
+tokenizer = this.plastic.tokenizer_proto:create(source);
+parser = this.plastic.parser_proto:create(tokenizer);
+
+statements = parser:statements();
+
+source = {};
+
+for statement in (statements)
+  source = {@source, @this:_print(statement)};
+endfor
+
+return source;
+.
+
+; /* TOKENIZER */
+
+@program $plastic.tokenizer_proto:create as application/x-moocode
+this:_ensure_prototype();
+
+instance = create(this, 1);
+
+instance.row = 1;
+instance.column = 1;
+instance.source = (length(args) == 1 && typeof(args[1]) == LIST) ? args[1] | args;
+
+return instance;
+.
+
+@program $plastic.tokenizer_proto:advance as application/x-moocode
+this:_ensure_instance();
+
+this.token = 0;
+
+if (!this.source)
+  return this;
+endif
+
+row = this.row;
+column = this.column;
+source = this.source;
+
+eol = 0;
+block_comment = 0;
+inline_comment = 0;
+
+while loop (length(source) >= row)
+
+  if (column > (len = length(source[row])))
+    eol = 1;
+    inline_comment = 0;
+    row = row + 1;
+    column = 1;
+    continue loop;
+  endif
+
+  next_two = len > column ? source[row][column..column + 1] | "";
+
+  if (block_comment && next_two == "*/")
+    block_comment = 0;
+    column = column + 2;
+    continue loop;
+  elseif (next_two == "/*")
+    block_comment = 1;
+    column = column + 2;
+    continue loop;
+  elseif (next_two == "//")
+    inline_comment = 1;
+    column = column + 2;
+    continue loop;
+  endif
+
+  if (block_comment || inline_comment)
+    column = column + 1;
+    continue loop;
+  endif
+
+  if (len >= column && ((c = source[row][column]) == "      " || c == " "))
+    column = column + 1;
+    continue loop;
+  endif
+
+  if (this.token)
+    this.token["eol"] = eol;
+    eol = 0;
+    break loop;
+  endif
+
+  if (`c = source[row][column] ! E_RANGE')
+
+    /* name and error */
+    /* MOO error literals look like names but they're not.  Worse, a
+     * valid error like E_PERM is treated like a literal, while an
+     * invalid error like E_FOO is treated like a variable.  Any name
+     * that starts with the characters "E_" is *now* an error literal,
+     * but invalid errors are errors.
+     */
+    if ((c >= "a" && c <= "z") || c == "_" || c == "$")
+      col1 = column; /* mark the start */
+      column = column + 1;
+      while (`c = source[row][column] ! E_RANGE')
+        if ((c >= "a" && c <= "z") || (c >= "0" && c <= "9") || c == "_")
+          column = column + 1;
+        else
+          break;
+        endif
+      endwhile
+      col2 = column - 1;
+      chars = source[row][col1..col2];
+      if (index(chars, "E_") == 1)
+        try
+          this.token = ["type" -> "error", "value" -> this.errors[chars]];
+        except ex (E_RANGE)
+          this.token = ["type" -> "error", "value" -> chars, "error" -> tostr("Invalid error: ", chars)];
+        endtry
+      else
+        this.token = ["type" -> "name", "value" -> chars];
+      endif
+      continue loop;
+
+    /* object number */
+    elseif (c == "#")
+      col1 = column; /* mark the start */
+      column = column + 1;
+      if (`c = source[row][column] ! E_RANGE')
+        if (c == "+" || c == "-")
+          column = column + 1;
+        endif
+      endif
+      while (`c = source[row][column] ! E_RANGE')
+        if (c >= "0" && c <= "9")
+          column = column + 1;
+        else
+          break;
+        endif
+      endwhile
+      col2 = column - 1;
+      chars = source[row][col1..col2];
+      if (chars[$] < "0" || chars[$] > "9")
+        this.token = ["type" -> "object", "value" -> chars, "error" -> "Bad object number"];
+      elseif (c >= "a" && c <= "z")
+        this.token = ["type" -> "object", "value" -> chars + c, "error" -> "Bad object number"];
+      else
+        this.token = ["type" -> "object", "value" -> toobj(chars)];
+      endif
+      continue loop;
+
+    /* number */
+    elseif (c >= "0" && c <= "9")
+      float = 0;
+      col1 = column; /* mark the start */
+      column = column + 1;
+      while (`c = source[row][column] ! E_RANGE')
+        if (c >= "0" && c <= "9")
+          column = column + 1;
+        else
+          break;
+        endif
+      endwhile
+      if (c == "." && ((cc = `source[row][column + 1] ! E_RANGE') != ".")) /* not `..' */
+        float = 1;
+        column = column + 1;
+        while (`c = source[row][column] ! E_RANGE')
+          if (c >= "0" && c <= "9")
+            column = column + 1;
+          else
+            break;
+          endif
+        endwhile
+      endif
+      if (c == "e")
+        float = 1;
+        column = column + 1;
+        if (`c = source[row][column] ! E_RANGE' && c in {"-", "+"})
+          column = column + 1;
+        endif
+        while (`c = source[row][column] ! E_RANGE')
+          if (c >= "0" && c <= "9")
+            column = column + 1;
+          else
+            break;
+          endif
+        endwhile
+      endif
+      col2 = column - 1;
+      chars = source[row][col1..col2];
+      if ((chars[$] < "0" || chars[$] > "9") && chars[$] != ".")
+        this.token = ["type" -> "number", "value" -> chars, "error" -> "Bad number"];
+      elseif (c >= "a" && c <= "z")
+        this.token = ["type" -> "number", "value" -> chars + c, "error" -> "Bad number"];
+      else
+        this.token = ["type" -> "number", "value" -> float ? tofloat(chars) | toint(chars)];
+      endif
+      continue loop;
+
+    /* string */
+    elseif (c == "\"" || c == "'")
+      esc = 0;
+      chars = "";
+      q = c;
+      col1 = column; /* mark the start */
+      column = column + 1;
+      while (`c = source[row][column] ! E_RANGE' && (c != q || esc))
+        column = column + 1;
+        if (c != "\\" || esc)
+          chars = tostr(chars, c);
+          esc = 0;
+        else
+          esc = 1;
+        endif
+      endwhile
+      column = column + 1;
+      col2 = column - 1;
+      if (c != q)
+        this.token = ["type" -> "string", "value" -> source[row][col1..col2 - 1], "error" -> "Unterminated string"];
+        continue loop;
+      else
+        this.token = ["type" -> "string", "value" -> chars];
+        continue loop;
+      endif
+
+    /* possible multi-character operator */
+    elseif (index("-+<>=*/%!|&.", c))
+      col1 = column; /* mark the start */
+      column = column + 1;
+      if (`c = source[row][column] ! E_RANGE' && index(">=*!|&.", c))
+        column = column + 1;
+        this.token = ["type" -> "operator", "value" -> source[row][col1..column - 1]];
+        continue loop;
+      else
+        this.token = ["type" -> "operator", "value" -> source[row][col1]];
+        continue loop;
+      endif
+
+    /* operator */
+    else
+      column = column + 1;
+      this.token = ["type" -> "operator", "value" -> c];
+      continue loop;
+
+    endif
+
+    column = column + 1;
+  endif
+endwhile
+
+this.row = row;
+this.column = column;
+this.source = source;
+
+/* check for unterminated comment */
+if (block_comment)
+  this.token = ["type" -> "comment", "value" -> "", "error" -> "Unterminated comment"];
+endif
+
+/* dollar sign by itself is not a name */
+if (this.token && this.token["type"] == "name" && this.token["value"] == "$")
+  this.token["type"] = "operator";
+endif
+
+/* catch the last token */
+if (row > length(source) && this.token)
+  this.token["eol"] = 1;
+endif
+
+return this;
+.
+
+@program $plastic.tokenizer_proto:token as application/x-moocode
+this:_ensure_instance();
+
+return this.token;
+.
+
+; /* PARSER */
+
+@program $plastic.parser_proto:create as application/x-moocode
+this:_ensure_prototype();
+
+{tokenizer, @options} = args;
+
+instance = create(this, 1);
+instance.tokenizer = tokenizer;
+instance.symbols = [];
+
+plastic = this.plastic;
+
+/* `(end)' is required */
+instance:symbol("(end)");
+instance:symbol("(name)", 0, plastic.name_proto);
+instance:symbol("(literal)", 0, plastic.literal_proto);
+instance:symbol(";", 0, plastic.operator_proto);
+instance:symbol(",", 0, plastic.operator_proto);
+instance:symbol("]", 0, plastic.operator_proto);
+instance:symbol("}", 0, plastic.operator_proto);
+instance:symbol("->", 0, plastic.operator_proto);
+instance:symbol("=>", 0, plastic.operator_proto);
+instance:symbol("..", 0, plastic.operator_proto);
+instance:symbol("|", 0, plastic.operator_proto);
+instance:symbol("`", 0, plastic.operator_proto);
+instance:symbol("!", 0, plastic.prefix_operator_proto);
+instance:symbol("!!", 50, plastic.error_catching_operator_proto);
+instance:symbol("=", 100, plastic.assignment_operator_proto);
+instance:symbol("+=", 100, plastic.compound_assignment_operator_proto);
+instance:symbol("-=", 100, plastic.compound_assignment_operator_proto);
+instance:symbol("*=", 100, plastic.compound_assignment_operator_proto);
+instance:symbol("/=", 100, plastic.compound_assignment_operator_proto);
+instance:symbol("%=", 100, plastic.compound_assignment_operator_proto);
+instance:symbol("?", 200, plastic.traditional_ternary_operator_proto);
+instance:symbol("&&", 300, plastic.infix_operator_proto, ["right" -> 1]);
+instance:symbol("||", 300, plastic.infix_operator_proto, ["right" -> 1]);
+instance:symbol("!=", 400, plastic.infix_operator_proto);
+instance:symbol("==", 400, plastic.infix_operator_proto);
+instance:symbol("<", 400, plastic.infix_operator_proto);
+instance:symbol("<=", 400, plastic.infix_operator_proto);
+instance:symbol(">", 400, plastic.infix_operator_proto);
+instance:symbol(">=", 400, plastic.infix_operator_proto);
+instance:symbol("in", 400, plastic.infix_operator_proto);
+instance:symbol("+", 500, plastic.sign_operator_proto);
+instance:symbol("-", 500, plastic.sign_operator_proto);
+instance:symbol("*", 600, plastic.infix_operator_proto);
+instance:symbol("/", 600, plastic.infix_operator_proto);
+instance:symbol("%", 600, plastic.infix_operator_proto);
+instance:symbol("**", 650, plastic.infix_operator_proto);
+instance:symbol("[", 800, plastic.bracket_operator_proto);
+instance:symbol("{", 0, plastic.brace_operator_proto); /* never bind left */
+instance:symbol("return", 0, plastic.control_flow_statement_proto);
+instance:symbol("break", 0, plastic.control_flow_statement_proto);
+instance:symbol("continue", 0, plastic.control_flow_statement_proto);
+instance:symbol("if", 0, plastic.if_statement_proto);
+instance:symbol("for", 0, plastic.for_statement_proto);
+instance:symbol("while", 0, plastic.loop_statement_proto);
+instance:symbol("until", 0, plastic.loop_statement_proto);
+instance:symbol("fork", 0, plastic.fork_statement_proto);
+instance:symbol("try", 0, plastic.try_statement_proto);
+instance:symbol("from", 0, plastic.from_statement_proto);
+instance:symbol(":", 800, plastic.verb_selector_operator_proto);
+instance:symbol(".", 800, plastic.property_selector_operator_proto);
+/* the infix form is function/verb invocation */
+instance:symbol("(", 800, plastic.invocation_operator_proto);
+instance:symbol(")", 0, plastic.operator_proto);
+
+return instance;
+.
+
+@program $plastic.parser_proto:symbol as application/x-moocode
+this:_ensure_instance();
+
+{id, ?bp = 0, ?proto = $nothing, ?options = []} = args;
+
+proto = valid(proto) ? proto | this.plastic.symbol_proto;
+
+if ((symbol = `this.symbols[id] ! E_RANGE') == E_RANGE)
+  symbol = proto:create(id, bp, options);
+endif
+
+this.symbols[id] = symbol;
+
+return symbol;
+.
+
+@program $plastic.parser_proto:reserve_statement as application/x-moocode
+this:_ensure_instance();
+
+{symbol} = args;
+
+id = symbol.id;
+
+/* raise error if this symbol is not a name, statement or keyword */
+if ((type = this.symbols[id].type) != "name" && type != "statement" && type != "keyword")
+  an_or_a = index("aeiou", type[1]) ? "an" | "a";
+  raise("Syntax error", tostr("`", id, "' is ", an_or_a, " ", type), this);
+endif
+
+symbol.reserved = 1;
+symbol.type = verb[9..$];
+
+this.symbols[id] = symbol;
+.
+
+@program $plastic.parser_proto:make_identifier as application/x-moocode
+this:_ensure_instance();
+
+{symbol} = args;
+
+id = symbol.id;
+
+/* raise error if this symbol is reserved */
+if (this.symbols[id].reserved)
+  raise("Syntax error", tostr("`", id, "' is reserved"), this);
+endif
+
+symbol.reserved = 0;
+symbol.type = verb[6..$];
+
+this.symbols[id] = symbol;
+.
+
+@program $plastic.parser_proto:token as application/x-moocode
+this:_ensure_instance();
+
+{?ttid = 0} = args;
+
+if (this.token == 0)
+  this.tokenizer:advance();
+  token = this.tokenizer.token;
+  if (token)
+    type = token["type"];
+    value = token["value"];
+    eol = token["eol"];
+    if (`token["error"] ! E_RANGE')
+      raise("Syntax error", token["error"], this);
+    elseif (type == "number" || type == "string" || type == "object" || type == "error")
+      symbol = this:symbol("(literal)");
+      this.token = symbol:clone();
+      this.token.type = type;
+      this.token.value = value;
+      this.token.eol = eol;
+    elseif (type == "operator")
+      /* Update the symbol table itself and give the operator the
+       * initial type "operator" (the type will change to "unary",
+       * "binary" or "ternary" when we learn how this symbol is used in
+       * the program).
+       */
+      /* check the symbol table */
+      if ((symbol = `this.symbols[value] ! E_RANGE') == E_RANGE)
+        raise("Syntax error", tostr("Unknown operator:  `", value, "'"), this);
+      endif
+      this.token = symbol:clone();
+      this.token.type = "operator";
+      this.token.value = value;
+      this.token.eol = eol;
+    elseif (type == "name")
+      /* Update the symbol table itself and give the name the initial
+       * type "name" (the type will change to "variable", "identifier",
+       * "statement" or "keyword" when we learn how this symbol is used
+       * in the program).
+       */
+      id = value;
+      /* peek into the symbol table */
+      if ((symbol = `this.symbols[id] ! E_RANGE') != E_RANGE)
+        this.token = symbol:clone();
+        this.symbols[id] = this.token;
+        this.token.type = symbol.type || "name";
+        this.token.id = id;
+        this.token.value = value;
+        this.token.eol = eol;
+      else
+        symbol = this:symbol("(name)");
+        this.token = symbol:clone();
+        this.symbols[id] = this.token;
+        this.token.type = "name";
+        this.token.id = id;
+        this.token.value = value;
+        this.token.eol = eol;
+      endif
+    else
+      raise("Syntax error", "Unexpected token", this);
+    endif
+  else
+    symbol = this:symbol("(end)");
+    this.token = symbol:clone();
+  endif
+endif
+
+if (ttid)
+  this:advance(ttid);
+endif
+
+return this.token;
+.
+
+@program $plastic.parser_proto:advance as application/x-moocode
+this:_ensure_instance();
+
+{?id = 0} = args;
+
+/* raise error if token doesn't match expectation */
+if (id && this.token != 0 && this.token.id != id)
+  raise("Syntax error", tostr("Expected `", id, "'"), this);
+endif
+
+this.token = 0;
+
+return this;
+.
+
+@program $plastic.parser_proto:expression as application/x-moocode
+this:_ensure_instance();
+
+{?bp = 0} = args;
+
+token = this:token();
+this:advance();
+
+/* don't call `nud()' and/or `led()' on `(end)' */
+if (token.id == "(end)")
+  return token;
+endif
+
+left = token:nud(this);
+
+while (bp < this:token().bp)
+  this.plastic.utilities:suspend_if_necessary();
+
+  token = this:token();
+  this:advance();
+  left = token:led(this, left);
+endwhile
+
+return left;
+.
+
+@program $plastic.parser_proto:statement as application/x-moocode
+this:_ensure_instance();
+
+token = this:token();
+
+/* disregarded naked semicolons */
+while (token.id == ";")
+  this:advance();
+  token = this:token();
+endwhile
+
+/* either the beginning of a statement */
+/* or an expression with an optional semicolon */
+if (respond_to(token, "std"))
+  this:advance();
+  return token:std(this);
+else
+  expression = this:expression();
+  if (this:token().id == ";")
+    this:advance();
+  endif
+  return expression;
+endif
+.
+
+@program $plastic.parser_proto:statements as application/x-moocode
+this:_ensure_instance();
+
+terminals = args;
+
+statements = {};
+
+while (1)
+  this.plastic.utilities:suspend_if_necessary();
+
+  token = this:token();
+  if (token.id == "(end)" || ((token.type in {"name", "statement", "keyword"}) && token.value in terminals))
+    break;
+  endif
+  statement = this:statement();
+  if (statement.id == "(end)")
+    break;
+  endif
+  statements = {@statements, statement};
+endwhile
+
+return statements;
+.
+
+@program $plastic.parser_proto:parse_all as application/x-moocode
+this:_ensure_instance();
+
+/* This is the API entry-point for clients that want to turn a
+ * stream of tokens into a syntax tree and to return it for further
+ * modification, changing ownership to the client in the process.
+ * Assumes "change owner" permission has been granted by the
+ * caller.
+ */
+
+stack = statements = this:statements();
+
+while (stack)
+  this.plastic.utilities:suspend_if_necessary();
+  {top, @stack} = stack;
+  stack = {@stack, @this.plastic.utilities:children(top)};
+  if (typeof(top) == ANON && isa(top, this.plastic.symbol_proto))
+    this.object_utilities:change_owner(top, caller_perms());
+  endif
+endwhile
+
+return statements;
+.
+
+@program $plastic.parser_proto:push as application/x-moocode
+this:_ensure_instance();
+
+definition = args;
+{id, @rest} = definition;
+
+new = 0;
+
+if (`this.symbols[id] ! E_RANGE' == E_RANGE)
+  this:symbol(@definition);
+  new = 1;
+endif
+
+return {new, id};
+.
+
+@program $plastic.parser_proto:pop as application/x-moocode
+this:_ensure_instance();
+
+{args} = args;
+{new, id} = args;
+
+if (new)
+  this.symbols = this.symbols:delete(id);
+endif
+.
+
+
+; /* UTILITIES */
+
+@program $plastic.utilities:suspend_if_necessary as application/x-moocode
+(ticks_left() < 10000 || seconds_left() < 2) && suspend(0);
+.
+
+@program $plastic.utilities:parse_map_sequence as application/x-moocode
+{parser, separator, infix, terminator, ?symbols = {}} = args;
+
+ids = {};
+for symbol in (symbols)
+  ids = {@ids, parser:push(@symbol)};
+endfor
+
+if (terminator && parser:token().id == terminator)
+  return {};
+endif
+
+key = parser:expression(0);
+parser:advance(infix);
+value = parser:expression(0);
+map = {{key, value}};
+
+while (parser:token().id == separator)
+  this:suspend_if_necessary();
+  map && parser:advance(separator);
+  key = parser:expression(0);
+  parser:advance(infix);
+  value = parser:expression(0);
+  map = {@map, {key, value}};
+endwhile
+
+for id in (ids)
+  parser:pop(id);
+endfor
+
+return map;
+.
+
+@program $plastic.utilities:parse_list_sequence as application/x-moocode
+{parser, separator, terminator, ?symbols = "defaults"} = args;
+
+/* enable defaults */
+if (symbols && symbols == "defaults")
+  symbols = {{"@", 0, this.plastic.prefix_operator_proto}};
+endif
+
+ids = {};
+for symbol in (symbols)
+  ids = {@ids, parser:push(@symbol)};
+endfor
+
+if (terminator && parser:token().id == terminator)
+  return {};
+endif
+
+expression = parser:expression(0);
+list = {expression};
+
+while (parser:token().id == separator)
+  this:suspend_if_necessary();
+  parser:advance(separator);
+  expression = parser:expression(0);
+  list = {@list, expression};
+endwhile
+
+for id in (ids)
+  parser:pop(id);
+endfor
+
+return list;
+.
+
+@program $plastic.utilities:validate_scattering_pattern as application/x-moocode
+{parser, pattern} = args;
+
+state = 1;
+
+for element in (pattern)
+  if (state == 1 && element.type == "variable")
+    continue;
+  elseif ((state == 1 || state == 2) && element.type == "binary" && element.id == "=")
+    if (element.first.type == "variable")
+      state = 2;
+      continue;
+    endif
+  elseif ((state == 1 || state == 2) && element.type == "unary" && element.id == "@")
+    if (element.first.type == "variable")
+      state = 3;
+      continue;
+    endif
+  endif
+
+  raise("Syntax error", "Illegal scattering pattern", parser);
+endfor
+.
+
+@program $plastic.utilities:children as application/x-moocode
+{node} = args;
+
+/* Intelligently gather children from various places.
+ */
+
+if (typeof(node) == LIST)
+  return node;
+elseif (`typeof(value = node.value) == LIST ! ANY')
+  return value;
+else
+  children = {};
+  for prop in ({"first", "second", "third"})
+    if (`value = node.(prop) ! E_PROPNF => 0' != 0)
+      children = {@children, value};
+    endif
+  endfor
+  return children;
+endif
+.
+
+@program $plastic.utilities:match as application/x-moocode
+{root, pattern} = args;
+
+/* Pattern is a map.  The keys specify the properties (`id', `type',
+ * etc.) to match on.  The values specify the property values for the
+ * match comparison.  Conducts a depth first search for pattern.
+ */
+
+keys = pattern:keys();
+matches = {};
+stack = {root};
+
+while next (stack)
+  this:suspend_if_necessary();
+  {top, @stack} = stack;
+  stack = {@stack, @this:children(top)};
+  if (typeof(top) == ANON && isa(top, this.plastic.symbol_proto))
+    for key in (keys)
+      if (top.(key) != pattern[key])
+        continue next;
+      endif
+    endfor
+    matches = {@matches, top};
+  endif
+endwhile
+
+return matches;
+.
+
+
+@program $plastic.symbol_proto:create as application/x-moocode
+{id, ?bp = 0, ?opts = []} = args;
+(typeof(this) == OBJ) || raise(E_PERM, "Call not allowed on anonymous object");
+instance = create(this, 1);
+instance.id = id;
+instance.value = id;
+instance.bp = bp;
+for v, k in (opts)
+  if (k in {"id", "type", "bp", "right"})
+    instance.(k) = v;
+  endif
+endfor
+return instance;
+.
+
+@program $plastic.symbol_proto:clone as application/x-moocode
+(typeof(this) == OBJ) && raise(E_PERM, "Call not allowed on permanent object");
+parents = parents(this);
+instance = create(parents, 1);
+for ancestor in (ancestors(this))
+  for property in (`properties(ancestor) ! E_PERM => {}')
+    instance.(property) = this.(property);
+  endfor
+endfor
+return instance;
+.
+
+@program $plastic.symbol_proto:nud as application/x-moocode
+{parser} = args;
+raise("Syntax error", tostr("Undefined: ", this.id), parser);
+.
+
+@program $plastic.symbol_proto:led as application/x-moocode
+{parser, _} = args;
+raise("Syntax error", tostr("Missing operator: ", this.id), parser);
+.
+
+
+@program $plastic.literal_proto:nud as application/x-moocode
+return this;
+.
+
+
+@program $plastic.positional_symbol_proto:nud as application/x-moocode
+return this;
+.
+
+
+@program $plastic.prefix_operator_proto:nud as application/x-moocode
+{parser} = args;
+
+first = parser:expression(700);
+
+if (first.id == "(end)")
+  raise("Syntax error", "Expected an expression", parser);
+endif
+
+this.type = "unary";
+this.first = first;
+
+return this;
+.
+
+
+@program $plastic.infix_operator_proto:led as application/x-moocode
+{parser, first} = args;
+
+right = this.right && 1; /* does this operator associate to the right? */
+
+second = parser:expression(this.bp - right);
+
+if (second.id == "(end)")
+  raise("Syntax error", "Expected an expression", parser);
+endif
+
+this.type = "binary";
+this.first = first;
+this.second = second;
+
+return this;
+.
+
+
+@program $plastic.sign_operator_proto:nud as application/x-moocode
+{parser} = args;
+
+first = parser:expression(700);
+
+if (first.id == "(end)")
+  raise("Syntax error", "Expected an expression", parser);
+endif
+
+this.type = "unary";
+this.first = first;
+
+return this;
+.
+
+@program $plastic.sign_operator_proto:led as application/x-moocode
+{parser, first} = args;
+
+second = parser:expression(this.bp);
+
+if (second.id == "(end)")
+  raise("Syntax error", "Expected an expression", parser);
+endif
+
+this.type = "binary";
+this.first = first;
+this.second = second;
+
+return this;
+.
+
+
+@program $plastic.statement_proto:std as application/x-moocode
+{parser} = args;
+raise("Syntax error", "Undefined", parser);
+.
+
+
+
+@program $plastic.control_flow_statement_proto:std as application/x-moocode
+{parser} = args;
+
+if (this.id != "return" && parser.loop_depth < 1)
+  raise("Syntax error", tostr("No enclosing loop for ", this.id), parser);
+endif
+
+/* update the symbol table */
+parser:reserve_statement(this);
+
+if (!this.eol && parser:token().id != ";")
+  expression = parser:expression(0);
+  this.first = expression;
+endif
+
+if (this.id != "return" && this.first != 0)
+  if (this.first.type != "variable")
+    raise("Syntax error", "Loop name must be a name", parser);
+  endif
+  if (!(this.first.value in parser.loop_variables))
+    raise("Syntax error", tostr("Invalid loop name for ", this.id), parser);
+  endif
+endif
+
+if (parser:token().id == ";")
+  parser:advance(";");
+endif
+
+return this;
+.
+
+
+@program $plastic.if_statement_proto:std as application/x-moocode
+{parser} = args;
+
+/* update the symbol table */
+parser:reserve_statement(this);
+
+a = {};
+
+/* the predicate */
+parser:token("(");
+expression = parser:expression(0);
+a = {@a, expression};
+parser:token(")");
+
+/* the consequent */
+statements = parser:statements("elseif", "else", "endif", "end");
+a = {@a, statements};
+
+/* the alternatives */
+while (parser:token().id == "elseif")
+  parser:advance("elseif");
+
+  /* predicate */
+  parser:token("(");
+  expression = parser:expression(0);
+  a = {@a, expression};
+  parser:token(")");
+
+  /* consequent */
+  statements = parser:statements("elseif", "else", "endif", "end");
+  a = {@a, statements};
+
+  /* update the symbol table */
+  symbol = parser.symbols["elseif"];
+  parser:reserve_keyword(symbol);
+endwhile
+
+/* the final alternative */
+if (parser:token().id == "else")
+  parser:advance("else");
+
+  statements = parser:statements("endif", "end");
+  a = {@a, statements};
+
+  /* update the symbol table */
+  symbol = parser.symbols["else"];
+  parser:reserve_keyword(symbol);
+endif
+
+/* the last token must be "endif" or "end" */
+if ((id = parser:token().id) == "endif")
+  parser:advance("endif");
+else
+  parser:advance("end");
+endif
+
+/* update the symbol table */
+symbol = parser.symbols[id];
+parser:reserve_keyword(symbol);
+
+/* store the parts in this token's `value' */
+this.value = a;
+
+return this;
+.
+
+
+@program $plastic.for_statement_proto:std as application/x-moocode
+{parser} = args;
+
+/* update the symbol table */
+parser:reserve_statement(this);
+
+a = {};
+
+/* the index(s) */
+variables = {};
+
+variable = parser:token();
+parser:make_variable(variable);
+parser:advance();
+variables = {@variables, variable};
+
+if (parser:token().id == ",")
+  while (parser:token().id == ",")
+    parser:advance(",");
+    variable = parser:token();
+    parser:make_variable(variable);
+    parser:advance();
+    variables = {@variables, variable};
+  endwhile
+elseif (parser:token().id == "->")
+  while (parser:token().id == "->")
+    parser:advance("->");
+    variable = parser:token();
+    parser:make_variable(variable);
+    parser:advance();
+    variables = {variable, @variables};
+  endwhile
+endif
+
+a = {@a, @variables};
+
+for _, i in (variables)
+  variables[i] = variables[i].id;
+endfor
+
+parser:token("in");
+
+/* update the symbol table */
+symbol = parser.symbols["in"];
+parser:reserve_keyword(symbol);
+
+/* could be a range or a collection */
+if (parser:token().id == "[")
+  /* range */
+  this.subtype = "range";
+  length(a) < 2 || raise("Syntax error", "Too many loop variables", parser);
+  parser:token("[");
+  first = parser:expression(0);
+  a = {@a, first};
+  parser:token("..");
+  second = parser:expression(0);
+  a = {@a, second};
+  parser:token("]");
+else
+  /* collection */
+  this.subtype = "collection";
+  length(a) < 3 || raise("Syntax error", "Too many loop variables", parser);
+  parser:token("(");
+  expression = parser:expression(0);
+  a = {@a, expression};
+  parser:token(")");
+endif
+
+/* the body */
+parser.loop_variables = {@parser.loop_variables, @variables};
+parser.loop_depth = parser.loop_depth + 1;
+
+statements = parser:statements("endfor", "end");
+a = {@a, statements};
+
+l = length(variables);
+parser.loop_variables = parser.loop_variables[1..$ - l];
+parser.loop_depth = parser.loop_depth - 1;
+
+/* the last token must be "endfor" or "end" */
+if ((id = parser:token().id) == "endfor")
+  parser:advance("endfor");
+else
+  parser:advance("end");
+endif
+
+/* update the symbol table */
+symbol = parser.symbols[id];
+parser:reserve_keyword(symbol);
+
+/* store the parts in this token's `value' */
+this.value = a;
+
+return this;
+.
+
+
+@program $plastic.loop_statement_proto:std as application/x-moocode
+{parser} = args;
+
+/* update the symbol table */
+parser:reserve_statement(this);
+
+end = tostr("end", this.id);
+
+a = {};
+
+/* possible, optional loop name */
+variables = {};
+if ((type = parser:token().type) == "variable" || type == "name")
+  variable = parser:token();
+  parser:make_variable(variable);
+  parser:advance();
+  variables = {@variables, variable.id};
+  a = {@a, variable};
+endif
+
+/* the condition */
+parser:token("(");
+expression = parser:expression(0);
+a = {@a, expression};
+parser:token(")");
+
+/* the body */
+parser.loop_variables = {@parser.loop_variables, @variables};
+parser.loop_depth = parser.loop_depth + 1;
+
+statements = parser:statements(end, "end");
+a = {@a, statements};
+
+l = length(variables);
+parser.loop_variables = parser.loop_variables[1..$ - l];
+parser.loop_depth = parser.loop_depth - 1;
+
+/* the last token must be "endwhile/enduntil" or "end" */
+if ((id = parser:token().id) == end)
+  parser:advance(end);
+else
+  parser:advance("end");
+endif
+
+/* update the symbol table */
+symbol = parser.symbols[id];
+parser:reserve_keyword(symbol);
+
+/* store the parts in this token's `value' */
+this.value = a;
+
+return this;
+.
+
+
+@program $plastic.fork_statement_proto:std as application/x-moocode
+{parser} = args;
+
+/* update the symbol table */
+parser:reserve_statement(this);
+
+a = {};
+
+/* possible, optional task name */
+if ((type = parser:token().type) == "variable" || type == "name")
+  variable = parser:token();
+  parser:make_variable(variable);
+  parser:advance();
+  a = {@a, variable};
+endif
+
+/* the expression */
+parser:token("(");
+expression = parser:expression(0);
+a = {@a, expression};
+parser:token(")");
+
+/* the body */
+statements = parser:statements("endfork", "end");
+a = {@a, statements};
+
+/* the last token must be "endfork" or "end" */
+if ((id = parser:token().id) == "endfork")
+  parser:advance("endfork");
+else
+  parser:advance("end");
+endif
+
+/* update the symbol table */
+symbol = parser.symbols[id];
+parser:reserve_keyword(symbol);
+
+/* store the parts in this token's `value' */
+this.value = a;
+
+return this;
+.
+
+
+@program $plastic.try_statement_proto:std as application/x-moocode
+{parser} = args;
+
+/* update the symbol table */
+parser:reserve_statement(this);
+
+a = {};
+
+/* the body */
+body = parser:statements("except", "finally", "endtry", "end");
+a = {@a, body};
+
+if (parser:token().id == "finally")
+  parser:advance("finally");
+
+  b = parser:statements("endtry", "end");
+
+  /* update the symbol table */
+  symbol = parser.symbols["finally"];
+  parser:reserve_keyword(symbol);
+
+  this.subtype = "finally";
+
+  a = {@a, b};
+
+else
+  b = {};
+
+  id = parser:push("@", 0, this.plastic.prefix_operator_proto);
+
+  /* the exceptions */
+  while (parser:token().id == "except")
+    parser:advance("except");
+
+    /* variable and codes */
+    if ((variable = parser:token()).id != "(")
+      parser:advance();
+
+      if (variable.type != "name" && variable.type != "variable")
+        raise("Syntax error", "Variable must be an identifier", parser);
+      endif
+      parser:make_variable(variable);
+
+      parser:token("(");
+      if ((token = parser:token()).id == "ANY")
+        parser:advance("ANY");
+        symbol = parser.symbols["ANY"];
+        parser:reserve_keyword(symbol);
+        codes = {token};
+      else
+        codes = this.plastic.utilities:parse_list_sequence(parser, ",", ")");
+      endif
+      parser:token(")");
+
+      !codes && raise("Syntax error", "Codes may not be empty", parser);
+
+      b = {variable, codes};
+
+    /* just codes */
+    else
+      parser:token("(");
+      if ((token = parser:token()).id == "ANY")
+        parser:advance("ANY");
+        symbol = parser.symbols["ANY"];
+        parser:reserve_keyword(symbol);
+        codes = {token};
+      else
+        codes = this.plastic.utilities:parse_list_sequence(parser, ",", ")");
+      endif
+      parser:token(")");
+
+      !codes && raise("Syntax error", "Codes may not be empty", parser);
+
+      b = {codes};
+
+    endif
+
+    /* handler */
+    handler = parser:statements("except", "finally", "endtry", "end");
+    b = {@b, handler};
+
+    /* update the symbol table */
+    symbol = parser.symbols["except"];
+    parser:reserve_keyword(symbol);
+
+    a = {@a, b};
+
+  endwhile
+
+  parser:pop(id);
+
+  if (!b)
+    raise("Syntax error", "Missing except", parser);
+  endif
+
+  this.subtype = "except";
+
+endif
+
+/* the last token must be "endtry" or "end" */
+if ((id = parser:token().id) == "endtry")
+  parser:advance("endtry");
+else
+  parser:advance("end");
+endif
+
+/* update the symbol table */
+symbol = parser.symbols[id];
+parser:reserve_keyword(symbol);
+
+/* store the parts in this token's `value' */
+this.value = a;
+
+return this;
+.
+
+
+@program $plastic.assignment_operator_proto:led as application/x-moocode
+{parser, first} = args;
+
+if (first.type == "unary" && first.id == "{") /* scattering syntax */
+  this.plastic.utilities:validate_scattering_pattern(parser, first.value);
+  first.type = "pattern";
+endif
+
+if (first.type != "variable" && first.type != "pattern" && first.id != "." && first.id != "[")
+  raise("Syntax error", "Illegal expression on left side of assignment", parser);
+endif
+
+second = parser:expression(this.bp - 1);
+
+if (second.id == "(end)")
+  raise("Syntax error", "Expected an expression", parser);
+endif
+
+this.type = "binary";
+this.first = first;
+this.second = second;
+
+return this;
+.
+
+
+@program $plastic.compound_assignment_operator_proto:led as application/x-moocode
+{parser, first} = args;
+
+if (first.type != "variable" && first.id != "." && first.id != "[")
+  raise("Syntax error", "Illegal expression on left side of assignment", parser);
+endif
+
+second = parser:expression(this.bp - 1);
+
+if (second.id == "(end)")
+  raise("Syntax error", "Expected an expression", parser);
+endif
+
+op = this.id[1];
+bp = parser.symbols[op].bp;
+
+inner = parser.plastic.infix_operator_proto:create(op, bp);
+inner.type = "binary";
+inner.first = first;
+inner.second = second;
+
+outer = parser.plastic.assignment_operator_proto:create("=", this.bp);
+outer.type = "binary";
+outer.first = first;
+outer.second = inner;
+
+return outer;
+.
+
+
+@program $plastic.name_proto:nud as application/x-moocode
+{parser} = args;
+
+/* Assume the name is a variable.  Subsequent usage may modify this
+ * assumption.
+ */
+parser:make_variable(this);
+
+return this;
+.
+
+
+@program $plastic.bracket_operator_proto:nud as application/x-moocode
+{parser} = args;
+
+sequence = this.plastic.utilities:parse_map_sequence(parser, ",", "->", "]");
+parser:token("]");
+
+this.type = "unary";
+this.value = sequence;
+this.first = this;
+
+return this;
+.
+
+@program $plastic.bracket_operator_proto:led as application/x-moocode
+{parser, first} = args;
+
+caret = parser:push("^", 0, this.plastic.positional_symbol_proto);
+dollar = parser:push("$", 0, this.plastic.positional_symbol_proto);
+
+second = parser:expression(0);
+
+if (parser:token().id == "..")
+  parser:advance("..");
+  third = parser:expression(0);
+  parser:advance("]");
+  this.type = "ternary";
+  this.first = first;
+  this.second = second;
+  this.third = third;
+else
+  parser:advance("]");
+  this.type = "binary";
+  this.first = first;
+  this.second = second;
+endif
+
+parser:pop(caret);
+parser:pop(dollar);
+
+return this;
+.
+
+
+@program $plastic.brace_operator_proto:nud as application/x-moocode
+{parser} = args;
+
+sequence = this.plastic.utilities:parse_list_sequence(parser, ",", "}");
+parser:token("}");
+
+this.type = "unary";
+this.value = sequence;
+this.first = this;
+
+return this;
+.
+
+
+
+@program $plastic.invocation_operator_proto:nud as application/x-moocode
+{parser} = args;
+
+expression = parser:expression(0);
+parser:token(")");
+
+this.type = "unary";
+this.first = expression;
+
+return this;
+.
+
+@program $plastic.invocation_operator_proto:led as application/x-moocode
+{parser, left} = args;
+
+sequence = this.plastic.utilities:parse_list_sequence(parser, ",", ")");
+parser:token(")");
+
+/* The invocation operator handles function and verb invocation, and
+ * guards against use on properties.
+ */
+if (left.id == ".")
+  raise("Syntax error", "Invalid application of invocation", parser);
+elseif (left.id == ":")
+  first = left.first;
+  second = left.second;
+
+  /* the verb selector operator has our back */
+
+  this.type = "ternary";
+  this.first = first;
+  this.second = second;
+  this.third = sequence;
+else
+  if (left.type != "variable")
+    raise("Syntax error", "Expected an identifier", parser);
+  endif
+
+  parser:make_identifier(left);
+
+  if (`import = parser.imports[left.value] ! E_RANGE' != E_RANGE)
+    this.type = "ternary";
+    this.first = import;
+    this.second = left;
+    this.third = sequence;
+  else
+    this.type = "binary";
+    this.first = left;
+    this.second = sequence;
+  endif
+endif
+
+return this;
+.
+
+
+
+@program $plastic.verb_selector_operator_proto:led as application/x-moocode
+{parser, first} = args;
+
+if (parser:token().id == "(")
+  parser:advance("(");
+  second = parser:expression(0);
+  parser:advance(")");
+else
+  second = parser:expression(this.bp);
+  if (second.type != "variable")
+    raise("Syntax error", "Expected an identifier", parser);
+  endif
+  parser:make_identifier(second);
+endif
+
+if (parser:token().id != "(")
+  raise("Syntax error", "Expected `('", parser);
+endif
+
+this.type = "binary";
+this.first = first;
+this.second = second;
+
+return this;
+.
+
+
+@program $plastic.property_selector_operator_proto:led as application/x-moocode
+{parser, first} = args;
+
+if (parser:token().id == "(")
+  parser:advance("(");
+  second = parser:expression(0);
+  parser:advance(")");
+else
+  second = parser:expression(this.bp);
+  if (second.type != "variable")
+    raise("Syntax error", "Expected an identifier", parser);
+  endif
+  parser:make_identifier(second);
+endif
+
+this.type = "binary";
+this.first = first;
+this.second = second;
+
+return this;
+.
+
+
+@program $plastic.error_catching_operator_proto:nud as application/x-moocode
+{parser} = args;
+
+first = parser:expression(700);
+
+if (first.id == "(end)")
+  raise("Syntax error", "Expected an expression", parser);
+endif
+
+this.type = "unary";
+this.first = first;
+
+return this;
+.
+
+@program $plastic.error_catching_operator_proto:led as application/x-moocode
+{parser, first} = args;
+
+/* Error codes are either the keyword `ANY' or a list of expressions
+ * (see 4.1.12 Catching Errors in Expressions).
+ */
+id = parser:push("@", 0, this.plastic.prefix_operator_proto);
+
+if ((token = parser:token()).id == "ANY")
+  parser:advance("ANY");
+  symbol = parser.symbols["ANY"];
+  parser:reserve_keyword(symbol);
+  second = {token};
+else
+  second = this.plastic.utilities:parse_list_sequence(parser, ",", "");
+
+  if (second[$].id == "(end)")
+    raise("Syntax error", "Expected `ANY' or a list of expressions", parser);
+  endif
+endif
+
+parser:pop(id);
+
+if ((token = parser:token()).id == "=>")
+  parser:advance("=>");
+  third = parser:expression(0);
+
+  if (third.id == "(end)")
+    raise("Syntax error", "Expected an expression", parser);
+  endif
+
+  this.type = "ternary";
+  this.first = first;
+  this.second = second;
+  this.third = third;
+else
+  this.type = "binary";
+  this.first = first;
+  this.second = second;
+endif
+
+return this;
+.
+
+
+@program $plastic.traditional_ternary_operator_proto:led as application/x-moocode
+{parser, first} = args;
+
+second = parser:expression(0);
+parser:token("|");
+third = parser:expression(0);
+
+if (second.id == "(end)" || third.id == "(end)")
+  raise("Syntax error", "Expected an expression", parser);
+endif
+
+this.type = "ternary";
+this.first = first;
+this.second = second;
+this.third = third;
+
+return this;
+.
+
+@program $plastic.from_statement_proto:std as application/x-moocode
+{parser} = args;
+
+/* update the symbol table */
+parser:reserve_statement(this);
+
+types = {"name", "variable", "identifier"};
+
+/* the reference */
+if ((target = parser:token()).type == "string")
+  parser:advance();
+elseif (target.type in types && target.value == "this")
+  parser:advance();
+elseif (target.type in types && target.value[1] == "$")
+  target = parser:expression();
+  if (target.id == ".")
+    temp = target;
+    while (temp.id == ".")
+      if ((temp.first.id != "." && !(temp.first.type in types)) && !(temp.second.type in types))
+        raise("Syntax error", tostr("Invalid reference: ", target.id), parser);
+      endif
+      temp = temp.first;
+    endwhile
+  elseif (target.value[1] == "$")
+    /* ok */
+  else
+    raise("Syntax error", tostr("Invalid reference: ", target.id), parser);
+  endif
+else
+  raise("Syntax error", tostr("Invalid reference: ", target.id), parser);
+endif
+
+parser:token("use");
+
+/* update the symbol table */
+symbol = parser.symbols["use"];
+parser:reserve_keyword(symbol);
+
+/* the import(s) */
+imports = {};
+
+if ((import = parser:token()).id == "(end)")
+  raise("Syntax error", "Expected an identifier", parser);
+elseif (!(import.type in types))
+  raise("Syntax error", "Import must be an identifier", parser);
+endif
+parser:make_identifier(import);
+parser:advance();
+imports = {@imports, import};
+
+while (parser:token().id == ",")
+  parser:advance(",");
+  if ((import = parser:token()).id == "(end)")
+    raise("Syntax error", "Expected an identifier", parser);
+  elseif (!(import.type in types))
+    raise("Syntax error", "Import must be an identifier", parser);
+  endif
+  parser:make_identifier(import);
+  parser:advance();
+  imports = {@imports, import};
+endwhile
+
+/* generate code */
+if (target.type == "string")
+  temp = parser.plastic.invocation_operator_proto:create("(");
+  temp.type = "binary";
+  temp.first = parser.plastic.name_proto:create("$lookup");
+  temp.first.type = "identifier";
+  temp.first.value = "$lookup";
+  temp.second = {target};
+  target = temp;
+endif
+
+first = parser.plastic.name_proto:create(tostr(random()));
+first.type = "unique";
+
+if (!length(imports))
+  raise("Syntax error", "Missing imports", parser);
+endif
+
+for import in (imports)
+  if (`parser.imports[import.id] ! E_RANGE' != E_RANGE)
+    raise("Syntax error", "Duplicate imports", parser);
+  endif
+  parser.imports[import.id] = first;
+endfor
+
+result = parser.plastic.assignment_operator_proto:create("=");
+result.type = "binary";
+result.first = first;
+result.second = target;
+
+return result;
+.
diff --git a/samples/Moocode/toy.moo b/samples/Moocode/toy.moo
new file mode 100644
index 00000000..fec09b39
--- /dev/null
+++ b/samples/Moocode/toy.moo
@@ -0,0 +1,19 @@
+@verb toy:do_the_work this none this
+@program toy:do_the_work
+if (this.wound)
+  if ($object_utils:isa(this.location,$room))
+    this.location:announce_all(this.name," ", this:continue_msg());
+    this.wound = this.wound - 1;
+    if (this.wound)
+      fork (15)
+        this:do_the_work();
+      endfork
+    else
+      this.location:announce_all(this.name, " ", this:wind_down_msg());
+    endif
+  endif
+  if (this.wound < 0)
+    this.wound = 0;
+  endif
+endif
+.
diff --git a/samples/Nix/nginx.nix b/samples/Nix/nginx.nix
new file mode 100644
index 00000000..515b686f
--- /dev/null
+++ b/samples/Nix/nginx.nix
@@ -0,0 +1,80 @@
+{ stdenv, fetchurl, fetchgit, openssl, zlib, pcre, libxml2, libxslt, expat
+, rtmp ? false
+, fullWebDAV ? false
+, syslog ? false
+, moreheaders ? false, ...}:
+
+let
+  version = "1.4.4";
+  mainSrc = fetchurl {
+    url = "http://nginx.org/download/nginx-${version}.tar.gz";
+    sha256 = "1f82845mpgmhvm151fhn2cnqjggw9w7cvsqbva9rb320wmc9m63w";
+  };
+
+  rtmp-ext = fetchgit {
+    url = git://github.com/arut/nginx-rtmp-module.git;
+    rev = "1cfb7aeb582789f3b15a03da5b662d1811e2a3f1";
+    sha256 = "03ikfd2l8mzsjwx896l07rdrw5jn7jjfdiyl572yb9jfrnk48fwi";
+  };
+
+  dav-ext = fetchgit {
+    url = git://github.com/arut/nginx-dav-ext-module.git;
+    rev = "54cebc1f21fc13391aae692c6cce672fa7986f9d";
+    sha256 = "1dvpq1fg5rslnl05z8jc39sgnvh3akam9qxfl033akpczq1bh8nq";
+  };
+
+  syslog-ext = fetchgit {
+    url = https://github.com/yaoweibin/nginx_syslog_patch.git;
+    rev = "165affd9741f0e30c4c8225da5e487d33832aca3";
+    sha256 = "14dkkafjnbapp6jnvrjg9ip46j00cr8pqc2g7374z9aj7hrvdvhs";
+  };
+
+  moreheaders-ext = fetchgit {
+    url = https://github.com/agentzh/headers-more-nginx-module.git;
+    rev = "refs/tags/v0.23";
+    sha256 = "12pbjgsxnvcf2ff2i2qdn39q4cm5czlgrng96j8ml4cgxvnbdh39";
+  };
+in
+
+stdenv.mkDerivation rec {
+  name = "nginx-${version}";
+  src = mainSrc;
+
+  buildInputs = [ openssl zlib pcre libxml2 libxslt
+    ] ++ stdenv.lib.optional fullWebDAV expat;
+
+  patches = if syslog then [ "${syslog-ext}/syslog_1.4.0.patch" ] else [];
+
+  configureFlags = [
+    "--with-http_ssl_module"
+    "--with-http_spdy_module"
+    "--with-http_xslt_module"
+    "--with-http_sub_module"
+    "--with-http_dav_module"
+    "--with-http_gzip_static_module"
+    "--with-http_secure_link_module"
+    "--with-ipv6"
+    # Install destination problems
+    # "--with-http_perl_module"
+  ] ++ stdenv.lib.optional rtmp "--add-module=${rtmp-ext}"
+    ++ stdenv.lib.optional fullWebDAV "--add-module=${dav-ext}"
+    ++ stdenv.lib.optional syslog "--add-module=${syslog-ext}"
+    ++ stdenv.lib.optional moreheaders "--add-module=${moreheaders-ext}";
+
+  preConfigure = ''
+    export NIX_CFLAGS_COMPILE="$NIX_CFLAGS_COMPILE -I${libxml2 }/include/libxml2"
+  '';
+
+  # escape example
+  postInstall = ''
+    mv $out/sbin $out/bin ''' ''${
+   ${ if true then ${ "" } else false }
+  '';
+
+  meta = {
+    description = "A reverse proxy and lightweight webserver";
+    maintainers = [ stdenv.lib.maintainers.raskin];
+    platforms = stdenv.lib.platforms.all;
+    inherit version;
+  };
+}
diff --git a/samples/Objective-C++/EventHandlerMac.mm b/samples/Objective-C++/EventHandlerMac.mm
new file mode 100644
index 00000000..f6028c0b
--- /dev/null
+++ b/samples/Objective-C++/EventHandlerMac.mm
@@ -0,0 +1,778 @@
+// grabbed from https://raw.github.com/AOKP/external_webkit/61b2fb934bdd3a5fea253e2de0bcf8a47a552333/Source/WebCore/page/mac/EventHandlerMac.mm
+
+/*
+ * Copyright (C) 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "EventHandler.h"
+
+#include "AXObjectCache.h"
+#include "BlockExceptions.h"
+#include "Chrome.h"
+#include "ChromeClient.h"
+#include "ClipboardMac.h"
+#include "DragController.h"
+#include "EventNames.h"
+#include "FocusController.h"
+#include "Frame.h"
+#include "FrameLoader.h"
+#include "FrameView.h"
+#include "KeyboardEvent.h"
+#include "MouseEventWithHitTestResults.h"
+#include "NotImplemented.h"
+#include "Page.h"
+#include "PlatformKeyboardEvent.h"
+#include "PlatformWheelEvent.h"
+#include "RenderWidget.h"
+#include "RuntimeApplicationChecks.h"
+#include "Scrollbar.h"
+#include "Settings.h"
+#include "WebCoreSystemInterface.h"
+#include <objc/objc-runtime.h>
+#include <wtf/StdLibExtras.h>
+
+#if !(defined(OBJC_API_VERSION) && OBJC_API_VERSION > 0)
+static inline IMP method_setImplementation(Method m, IMP i)
+{
+    IMP oi = m->method_imp;
+    m->method_imp = i;
+    return oi;
+}
+#endif
+
+namespace WebCore {
+
+#if ENABLE(DRAG_SUPPORT)
+const double EventHandler::TextDragDelay = 0.15;
+#endif
+
+static RetainPtr<NSEvent>& currentNSEventSlot()
+{
+    DEFINE_STATIC_LOCAL(RetainPtr<NSEvent>, event, ());
+    return event;
+}
+
+NSEvent *EventHandler::currentNSEvent()
+{
+    return currentNSEventSlot().get();
+}
+
+class CurrentEventScope {
+     WTF_MAKE_NONCOPYABLE(CurrentEventScope);
+public:
+    CurrentEventScope(NSEvent *);
+    ~CurrentEventScope();
+
+private:
+    RetainPtr<NSEvent> m_savedCurrentEvent;
+#ifndef NDEBUG
+    RetainPtr<NSEvent> m_event;
+#endif
+};
+
+inline CurrentEventScope::CurrentEventScope(NSEvent *event)
+    : m_savedCurrentEvent(currentNSEventSlot())
+#ifndef NDEBUG
+    , m_event(event)
+#endif
+{
+    currentNSEventSlot() = event;
+}
+
+inline CurrentEventScope::~CurrentEventScope()
+{
+    ASSERT(currentNSEventSlot() == m_event);
+    currentNSEventSlot() = m_savedCurrentEvent;
+}
+
+bool EventHandler::wheelEvent(NSEvent *event)
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return false;
+
+    CurrentEventScope scope(event);
+
+    PlatformWheelEvent wheelEvent(event, page->chrome()->platformPageClient());
+    handleWheelEvent(wheelEvent);
+
+    return wheelEvent.isAccepted();
+}
+
+PassRefPtr<KeyboardEvent> EventHandler::currentKeyboardEvent() const
+{
+    NSEvent *event = [NSApp currentEvent];
+    if (!event)
+        return 0;
+    switch ([event type]) {
+        case NSKeyDown: {
+            PlatformKeyboardEvent platformEvent(event);
+            platformEvent.disambiguateKeyDownEvent(PlatformKeyboardEvent::RawKeyDown);
+            return KeyboardEvent::create(platformEvent, m_frame->document()->defaultView());
+        }
+        case NSKeyUp:
+            return KeyboardEvent::create(event, m_frame->document()->defaultView());
+        default:
+            return 0;
+    }
+}
+
+bool EventHandler::keyEvent(NSEvent *event)
+{
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    ASSERT([event type] == NSKeyDown || [event type] == NSKeyUp);
+
+    CurrentEventScope scope(event);
+    return keyEvent(PlatformKeyboardEvent(event));
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+
+    return false;
+}
+
+void EventHandler::focusDocumentView()
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return;
+
+    if (FrameView* frameView = m_frame->view()) {
+        if (NSView *documentView = frameView->documentView())
+            page->chrome()->focusNSView(documentView);
+    }
+
+    page->focusController()->setFocusedFrame(m_frame);
+}
+
+bool EventHandler::passWidgetMouseDownEventToWidget(const MouseEventWithHitTestResults& event)
+{
+    // Figure out which view to send the event to.
+    RenderObject* target = targetNode(event) ? targetNode(event)->renderer() : 0;
+    if (!target || !target->isWidget())
+        return false;
+
+    // Double-click events don't exist in Cocoa. Since passWidgetMouseDownEventToWidget will
+    // just pass currentEvent down to the widget, we don't want to call it for events that
+    // don't correspond to Cocoa events.  The mousedown/ups will have already been passed on as
+    // part of the pressed/released handling.
+    return passMouseDownEventToWidget(toRenderWidget(target)->widget());
+}
+
+bool EventHandler::passWidgetMouseDownEventToWidget(RenderWidget* renderWidget)
+{
+    return passMouseDownEventToWidget(renderWidget->widget());
+}
+
+static bool lastEventIsMouseUp()
+{
+    // Many AppKit widgets run their own event loops and consume events while the mouse is down.
+    // When they finish, currentEvent is the mouseUp that they exited on. We need to update
+    // the WebCore state with this mouseUp, which we never saw. This method lets us detect
+    // that state. Handling this was critical when we used AppKit widgets for form elements.
+    // It's not clear in what cases this is helpful now -- it's possible it can be removed.
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+    NSEvent *currentEventAfterHandlingMouseDown = [NSApp currentEvent];
+    return EventHandler::currentNSEvent() != currentEventAfterHandlingMouseDown
+        && [currentEventAfterHandlingMouseDown type] == NSLeftMouseUp
+        && [currentEventAfterHandlingMouseDown timestamp] >= [EventHandler::currentNSEvent() timestamp];
+    END_BLOCK_OBJC_EXCEPTIONS;
+
+    return false;
+}
+
+bool EventHandler::passMouseDownEventToWidget(Widget* pWidget)
+{
+    // FIXME: This function always returns true. It should be changed either to return
+    // false in some cases or the return value should be removed.
+
+    RefPtr<Widget> widget = pWidget;
+
+    if (!widget) {
+        LOG_ERROR("hit a RenderWidget without a corresponding Widget, means a frame is half-constructed");
+        return true;
+    }
+
+    // In WebKit2 we will never have an NSView. Just return early and let the regular event handler machinery take care of
+    // dispatching the event.
+    if (!widget->platformWidget())
+        return false;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    NSView *nodeView = widget->platformWidget();
+    ASSERT([nodeView superview]);
+    NSView *view = [nodeView hitTest:[[nodeView superview] convertPoint:[currentNSEvent() locationInWindow] fromView:nil]];
+    if (!view) {
+        // We probably hit the border of a RenderWidget
+        return true;
+    }
+
+    Page* page = m_frame->page();
+    if (!page)
+        return true;
+
+    if (page->chrome()->client()->firstResponder() != view) {
+        // Normally [NSWindow sendEvent:] handles setting the first responder.
+        // But in our case, the event was sent to the view representing the entire web page.
+        if ([currentNSEvent() clickCount] <= 1 && [view acceptsFirstResponder] && [view needsPanelToBecomeKey])
+            page->chrome()->client()->makeFirstResponder(view);
+    }
+
+    // We need to "defer loading" while tracking the mouse, because tearing down the
+    // page while an AppKit control is tracking the mouse can cause a crash.
+
+    // FIXME: In theory, WebCore now tolerates tear-down while tracking the
+    // mouse. We should confirm that, and then remove the deferrsLoading
+    // hack entirely.
+
+    bool wasDeferringLoading = page->defersLoading();
+    if (!wasDeferringLoading)
+        page->setDefersLoading(true);
+
+    ASSERT(!m_sendingEventToSubview);
+    m_sendingEventToSubview = true;
+    NSView *outerView = widget->getOuterView();
+    widget->beforeMouseDown(outerView, widget.get());
+    [view mouseDown:currentNSEvent()];
+    widget->afterMouseDown(outerView, widget.get());
+    m_sendingEventToSubview = false;
+
+    if (!wasDeferringLoading)
+        page->setDefersLoading(false);
+
+    // Remember which view we sent the event to, so we can direct the release event properly.
+    m_mouseDownView = view;
+    m_mouseDownWasInSubframe = false;
+
+    // Many AppKit widgets run their own event loops and consume events while the mouse is down.
+    // When they finish, currentEvent is the mouseUp that they exited on.  We need to update
+    // the EventHandler state with this mouseUp, which we never saw.
+    // If this event isn't a mouseUp, we assume that the mouseUp will be coming later.  There
+    // is a hole here if the widget consumes both the mouseUp and subsequent events.
+    if (lastEventIsMouseUp())
+        m_mousePressed = false;
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+
+    return true;
+}
+
+// Note that this does the same kind of check as [target isDescendantOf:superview].
+// There are two differences: This is a lot slower because it has to walk the whole
+// tree, and this works in cases where the target has already been deallocated.
+static bool findViewInSubviews(NSView *superview, NSView *target)
+{
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+    NSEnumerator *e = [[superview subviews] objectEnumerator];
+    NSView *subview;
+    while ((subview = [e nextObject])) {
+        if (subview == target || findViewInSubviews(subview, target)) {
+            return true;
+        }
+    }
+    END_BLOCK_OBJC_EXCEPTIONS;
+
+    return false;
+}
+
+NSView *EventHandler::mouseDownViewIfStillGood()
+{
+    // Since we have no way of tracking the lifetime of m_mouseDownView, we have to assume that
+    // it could be deallocated already. We search for it in our subview tree; if we don't find
+    // it, we set it to nil.
+    NSView *mouseDownView = m_mouseDownView;
+    if (!mouseDownView) {
+        return nil;
+    }
+    FrameView* topFrameView = m_frame->view();
+    NSView *topView = topFrameView ? topFrameView->platformWidget() : nil;
+    if (!topView || !findViewInSubviews(topView, mouseDownView)) {
+        m_mouseDownView = nil;
+        return nil;
+    }
+    return mouseDownView;
+}
+
+#if ENABLE(DRAG_SUPPORT)
+bool EventHandler::eventLoopHandleMouseDragged(const MouseEventWithHitTestResults&)
+{
+    NSView *view = mouseDownViewIfStillGood();
+
+    if (!view)
+        return false;
+
+    if (!m_mouseDownWasInSubframe) {
+        ASSERT(!m_sendingEventToSubview);
+        m_sendingEventToSubview = true;
+        BEGIN_BLOCK_OBJC_EXCEPTIONS;
+        [view mouseDragged:currentNSEvent()];
+        END_BLOCK_OBJC_EXCEPTIONS;
+        m_sendingEventToSubview = false;
+    }
+
+    return true;
+}
+#endif // ENABLE(DRAG_SUPPORT)
+
+bool EventHandler::eventLoopHandleMouseUp(const MouseEventWithHitTestResults&)
+{
+    NSView *view = mouseDownViewIfStillGood();
+    if (!view)
+        return false;
+
+    if (!m_mouseDownWasInSubframe) {
+        ASSERT(!m_sendingEventToSubview);
+        m_sendingEventToSubview = true;
+        BEGIN_BLOCK_OBJC_EXCEPTIONS;
+        [view mouseUp:currentNSEvent()];
+        END_BLOCK_OBJC_EXCEPTIONS;
+        m_sendingEventToSubview = false;
+    }
+
+    return true;
+}
+
+bool EventHandler::passSubframeEventToSubframe(MouseEventWithHitTestResults& event, Frame* subframe, HitTestResult* hoveredNode)
+{
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    switch ([currentNSEvent() type]) {
+        case NSLeftMouseDragged:
+        case NSOtherMouseDragged:
+        case NSRightMouseDragged:
+            // This check is bogus and results in <rdar://6813830>, but removing it breaks a number of
+            // layout tests.
+            if (!m_mouseDownWasInSubframe)
+                return false;
+#if ENABLE(DRAG_SUPPORT)
+            if (subframe->page()->dragController()->didInitiateDrag())
+                return false;
+#endif
+        case NSMouseMoved:
+            // Since we're passing in currentNSEvent() here, we can call
+            // handleMouseMoveEvent() directly, since the save/restore of
+            // currentNSEvent() that mouseMoved() does would have no effect.
+            ASSERT(!m_sendingEventToSubview);
+            m_sendingEventToSubview = true;
+            subframe->eventHandler()->handleMouseMoveEvent(currentPlatformMouseEvent(), hoveredNode);
+            m_sendingEventToSubview = false;
+            return true;
+
+        case NSLeftMouseDown: {
+            Node* node = targetNode(event);
+            if (!node)
+                return false;
+            RenderObject* renderer = node->renderer();
+            if (!renderer || !renderer->isWidget())
+                return false;
+            Widget* widget = toRenderWidget(renderer)->widget();
+            if (!widget || !widget->isFrameView())
+                return false;
+            if (!passWidgetMouseDownEventToWidget(toRenderWidget(renderer)))
+                return false;
+            m_mouseDownWasInSubframe = true;
+            return true;
+        }
+        case NSLeftMouseUp: {
+            if (!m_mouseDownWasInSubframe)
+                return false;
+            ASSERT(!m_sendingEventToSubview);
+            m_sendingEventToSubview = true;
+            subframe->eventHandler()->handleMouseReleaseEvent(currentPlatformMouseEvent());
+            m_sendingEventToSubview = false;
+            return true;
+        }
+        default:
+            return false;
+    }
+    END_BLOCK_OBJC_EXCEPTIONS;
+
+    return false;
+}
+
+static IMP originalNSScrollViewScrollWheel;
+static bool _nsScrollViewScrollWheelShouldRetainSelf;
+static void selfRetainingNSScrollViewScrollWheel(NSScrollView *, SEL, NSEvent *);
+
+static bool nsScrollViewScrollWheelShouldRetainSelf()
+{
+    ASSERT(isMainThread());
+
+    return _nsScrollViewScrollWheelShouldRetainSelf;
+}
+
+static void setNSScrollViewScrollWheelShouldRetainSelf(bool shouldRetain)
+{
+    ASSERT(isMainThread());
+
+    if (!originalNSScrollViewScrollWheel) {
+        Method method = class_getInstanceMethod(objc_getRequiredClass("NSScrollView"), @selector(scrollWheel:));
+        originalNSScrollViewScrollWheel = method_setImplementation(method, reinterpret_cast<IMP>(selfRetainingNSScrollViewScrollWheel));
+    }
+
+    _nsScrollViewScrollWheelShouldRetainSelf = shouldRetain;
+}
+
+static void selfRetainingNSScrollViewScrollWheel(NSScrollView *self, SEL selector, NSEvent *event)
+{
+    bool shouldRetainSelf = isMainThread() && nsScrollViewScrollWheelShouldRetainSelf();
+
+    if (shouldRetainSelf)
+        [self retain];
+    originalNSScrollViewScrollWheel(self, selector, event);
+    if (shouldRetainSelf)
+        [self release];
+}
+
+bool EventHandler::passWheelEventToWidget(PlatformWheelEvent& wheelEvent, Widget* widget)
+{
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    if (!widget)
+        return false;
+
+    NSView* nodeView = widget->platformWidget();
+    if (!nodeView) {
+        // WebKit2 code path.
+        if (!widget->isFrameView())
+            return false;
+
+        return static_cast<FrameView*>(widget)->frame()->eventHandler()->handleWheelEvent(wheelEvent);
+    }
+
+    if ([currentNSEvent() type] != NSScrollWheel || m_sendingEventToSubview)
+        return false;
+
+    ASSERT(nodeView);
+    ASSERT([nodeView superview]);
+    NSView *view = [nodeView hitTest:[[nodeView superview] convertPoint:[currentNSEvent() locationInWindow] fromView:nil]];
+    if (!view)
+        // We probably hit the border of a RenderWidget
+        return false;
+
+    ASSERT(!m_sendingEventToSubview);
+    m_sendingEventToSubview = true;
+    // Work around <rdar://problem/6806810> which can cause -[NSScrollView scrollWheel:] to
+    // crash if the NSScrollView is released during timer or network callback dispatch
+    // in the nested tracking runloop that -[NSScrollView scrollWheel:] runs.
+    setNSScrollViewScrollWheelShouldRetainSelf(true);
+    [view scrollWheel:currentNSEvent()];
+    setNSScrollViewScrollWheelShouldRetainSelf(false);
+    m_sendingEventToSubview = false;
+    return true;
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+    return false;
+}
+
+void EventHandler::mouseDown(NSEvent *event)
+{
+    FrameView* v = m_frame->view();
+    if (!v || m_sendingEventToSubview)
+        return;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    m_frame->loader()->resetMultipleFormSubmissionProtection();
+
+    m_mouseDownView = nil;
+
+    CurrentEventScope scope(event);
+
+    handleMousePressEvent(currentPlatformMouseEvent());
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+void EventHandler::mouseDragged(NSEvent *event)
+{
+    FrameView* v = m_frame->view();
+    if (!v || m_sendingEventToSubview)
+        return;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    CurrentEventScope scope(event);
+    handleMouseMoveEvent(currentPlatformMouseEvent());
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+void EventHandler::mouseUp(NSEvent *event)
+{
+    FrameView* v = m_frame->view();
+    if (!v || m_sendingEventToSubview)
+        return;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    CurrentEventScope scope(event);
+
+    // Our behavior here is a little different that Qt. Qt always sends
+    // a mouse release event, even for a double click. To correct problems
+    // in khtml's DOM click event handling we do not send a release here
+    // for a double click. Instead we send that event from FrameView's
+    // handleMouseDoubleClickEvent. Note also that the third click of
+    // a triple click is treated as a single click, but the fourth is then
+    // treated as another double click. Hence the "% 2" below.
+    int clickCount = [event clickCount];
+    if (clickCount > 0 && clickCount % 2 == 0)
+        handleMouseDoubleClickEvent(currentPlatformMouseEvent());
+    else
+        handleMouseReleaseEvent(currentPlatformMouseEvent());
+
+    m_mouseDownView = nil;
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+/*
+ A hack for the benefit of AK's PopUpButton, which uses the Carbon menu manager, which thus
+ eats all subsequent events after it is starts its modal tracking loop.  After the interaction
+ is done, this routine is used to fix things up.  When a mouse down started us tracking in
+ the widget, we post a fake mouse up to balance the mouse down we started with. When a
+ key down started us tracking in the widget, we post a fake key up to balance things out.
+ In addition, we post a fake mouseMoved to get the cursor in sync with whatever we happen to
+ be over after the tracking is done.
+ */
+void EventHandler::sendFakeEventsAfterWidgetTracking(NSEvent *initiatingEvent)
+{
+    FrameView* view = m_frame->view();
+    if (!view)
+        return;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+
+    m_sendingEventToSubview = false;
+    int eventType = [initiatingEvent type];
+    if (eventType == NSLeftMouseDown || eventType == NSKeyDown) {
+        NSEvent *fakeEvent = nil;
+        if (eventType == NSLeftMouseDown) {
+            fakeEvent = [NSEvent mouseEventWithType:NSLeftMouseUp
+                                           location:[initiatingEvent locationInWindow]
+                                      modifierFlags:[initiatingEvent modifierFlags]
+                                          timestamp:[initiatingEvent timestamp]
+                                       windowNumber:[initiatingEvent windowNumber]
+                                            context:[initiatingEvent context]
+                                        eventNumber:[initiatingEvent eventNumber]
+                                         clickCount:[initiatingEvent clickCount]
+                                           pressure:[initiatingEvent pressure]];
+
+            [NSApp postEvent:fakeEvent atStart:YES];
+        } else { // eventType == NSKeyDown
+            fakeEvent = [NSEvent keyEventWithType:NSKeyUp
+                                         location:[initiatingEvent locationInWindow]
+                                    modifierFlags:[initiatingEvent modifierFlags]
+                                        timestamp:[initiatingEvent timestamp]
+                                     windowNumber:[initiatingEvent windowNumber]
+                                          context:[initiatingEvent context]
+                                       characters:[initiatingEvent characters]
+                      charactersIgnoringModifiers:[initiatingEvent charactersIgnoringModifiers]
+                                        isARepeat:[initiatingEvent isARepeat]
+                                          keyCode:[initiatingEvent keyCode]];
+            [NSApp postEvent:fakeEvent atStart:YES];
+        }
+        // FIXME: We should really get the current modifierFlags here, but there's no way to poll
+        // them in Cocoa, and because the event stream was stolen by the Carbon menu code we have
+        // no up-to-date cache of them anywhere.
+        fakeEvent = [NSEvent mouseEventWithType:NSMouseMoved
+                                       location:[[view->platformWidget() window] convertScreenToBase:[NSEvent mouseLocation]]
+                                  modifierFlags:[initiatingEvent modifierFlags]
+                                      timestamp:[initiatingEvent timestamp]
+                                   windowNumber:[initiatingEvent windowNumber]
+                                        context:[initiatingEvent context]
+                                    eventNumber:0
+                                     clickCount:0
+                                       pressure:0];
+        [NSApp postEvent:fakeEvent atStart:YES];
+    }
+
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+void EventHandler::mouseMoved(NSEvent *event)
+{
+    // Reject a mouse moved if the button is down - screws up tracking during autoscroll
+    // These happen because WebKit sometimes has to fake up moved events.
+    if (!m_frame->view() || m_mousePressed || m_sendingEventToSubview)
+        return;
+
+    BEGIN_BLOCK_OBJC_EXCEPTIONS;
+    CurrentEventScope scope(event);
+    mouseMoved(currentPlatformMouseEvent());
+    END_BLOCK_OBJC_EXCEPTIONS;
+}
+
+static bool frameHasPlatformWidget(Frame* frame)
+{
+    if (FrameView* frameView = frame->view()) {
+        if (frameView->platformWidget())
+            return true;
+    }
+
+    return false;
+}
+
+bool EventHandler::passMousePressEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
+{
+    // WebKit1 code path.
+    if (frameHasPlatformWidget(m_frame))
+        return passSubframeEventToSubframe(mev, subframe);
+
+    // WebKit2 code path.
+    subframe->eventHandler()->handleMousePressEvent(mev.event());
+    return true;
+}
+
+bool EventHandler::passMouseMoveEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe, HitTestResult* hoveredNode)
+{
+    // WebKit1 code path.
+    if (frameHasPlatformWidget(m_frame))
+        return passSubframeEventToSubframe(mev, subframe, hoveredNode);
+
+    // WebKit2 code path.
+    if (m_mouseDownMayStartDrag && !m_mouseDownWasInSubframe)
+        return false;
+    subframe->eventHandler()->handleMouseMoveEvent(mev.event(), hoveredNode);
+    return true;
+}
+
+bool EventHandler::passMouseReleaseEventToSubframe(MouseEventWithHitTestResults& mev, Frame* subframe)
+{
+    // WebKit1 code path.
+    if (frameHasPlatformWidget(m_frame))
+        return passSubframeEventToSubframe(mev, subframe);
+
+    // WebKit2 code path.
+    subframe->eventHandler()->handleMouseReleaseEvent(mev.event());
+    return true;
+}
+
+PlatformMouseEvent EventHandler::currentPlatformMouseEvent() const
+{
+    NSView *windowView = nil;
+    if (Page* page = m_frame->page())
+        windowView = page->chrome()->platformPageClient();
+    return PlatformMouseEvent(currentNSEvent(), windowView);
+}
+
+#if ENABLE(CONTEXT_MENUS)
+bool EventHandler::sendContextMenuEvent(NSEvent *event)
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return false;
+    return sendContextMenuEvent(PlatformMouseEvent(event, page->chrome()->platformPageClient()));
+}
+#endif // ENABLE(CONTEXT_MENUS)
+
+#if ENABLE(DRAG_SUPPORT)
+bool EventHandler::eventMayStartDrag(NSEvent *event)
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return false;
+    return eventMayStartDrag(PlatformMouseEvent(event, page->chrome()->platformPageClient()));
+}
+#endif // ENABLE(DRAG_SUPPORT)
+
+bool EventHandler::eventActivatedView(const PlatformMouseEvent& event) const
+{
+    return m_activationEventNumber == event.eventNumber();
+}
+
+#if ENABLE(DRAG_SUPPORT)
+
+PassRefPtr<Clipboard> EventHandler::createDraggingClipboard() const
+{
+    NSPasteboard *pasteboard = [NSPasteboard pasteboardWithName:NSDragPboard];
+    // Must be done before ondragstart adds types and data to the pboard,
+    // also done for security, as it erases data from the last drag
+    [pasteboard declareTypes:[NSArray array] owner:nil];
+    return ClipboardMac::create(Clipboard::DragAndDrop, pasteboard, ClipboardWritable, m_frame);
+}
+
+#endif
+
+bool EventHandler::tabsToAllFormControls(KeyboardEvent* event) const
+{
+    Page* page = m_frame->page();
+    if (!page)
+        return false;
+
+    KeyboardUIMode keyboardUIMode = page->chrome()->client()->keyboardUIMode();
+    bool handlingOptionTab = isKeyboardOptionTab(event);
+
+    // If tab-to-links is off, option-tab always highlights all controls
+    if ((keyboardUIMode & KeyboardAccessTabsToLinks) == 0 && handlingOptionTab)
+        return true;
+
+    // If system preferences say to include all controls, we always include all controls
+    if (keyboardUIMode & KeyboardAccessFull)
+        return true;
+
+    // Otherwise tab-to-links includes all controls, unless the sense is flipped via option-tab.
+    if (keyboardUIMode & KeyboardAccessTabsToLinks)
+        return !handlingOptionTab;
+
+    return handlingOptionTab;
+}
+
+bool EventHandler::needsKeyboardEventDisambiguationQuirks() const
+{
+    Document* document = m_frame->document();
+
+    // RSS view needs arrow key keypress events.
+    if (applicationIsSafari() && (document->url().protocolIs("feed") || document->url().protocolIs("feeds")))
+        return true;
+    Settings* settings = m_frame->settings();
+    if (!settings)
+        return false;
+
+#if ENABLE(DASHBOARD_SUPPORT)
+    if (settings->usesDashboardBackwardCompatibilityMode())
+        return true;
+#endif
+
+    if (settings->needsKeyboardEventDisambiguationQuirks())
+        return true;
+
+    return false;
+}
+
+unsigned EventHandler::accessKeyModifiers()
+{
+    // Control+Option key combinations are usually unused on Mac OS X, but not when VoiceOver is enabled.
+    // So, we use Control in this case, even though it conflicts with Emacs-style key bindings.
+    // See <https://bugs.webkit.org/show_bug.cgi?id=21107> for more detail.
+    if (AXObjectCache::accessibilityEnhancedUserInterfaceEnabled())
+        return PlatformKeyboardEvent::CtrlKey;
+
+    return PlatformKeyboardEvent::CtrlKey | PlatformKeyboardEvent::AltKey;
+}
+
+}
diff --git a/samples/Objective-C++/objsql.mm b/samples/Objective-C++/objsql.mm
new file mode 100644
index 00000000..f71ca8eb
--- /dev/null
+++ b/samples/Objective-C++/objsql.mm
@@ -0,0 +1,1372 @@
+/*
+ *  objsql.m - implementaion simple persistence layer using objcpp.h
+ *  ========
+ *
+ *  Created by John Holdsworth on 01/04/2009.
+ *  Copyright 2009 John Holdsworth.
+ *
+ *  $Id: //depot/4.4/ObjCpp/objsql.mm#11 $
+ *  $DateTime: 2012/09/05 00:20:47 $
+ *
+ *  C++ classes to wrap up XCode classes for operator overload of
+ *  useful operations such as access to NSArrays and NSDictionary
+ *  by subscript or NSString operators such as + for concatenation.
+ *
+ *  This works as the Apple Objective-C compiler supports source
+ *  which mixes C++ with objective C. To enable this: for each
+ *  source file which will include/import this header file, select
+ *  it in Xcode and open it's "Info". To enable mixed compilation,
+ *  for the file's "File Type" select: "sourcecode.cpp.objcpp".
+ *
+ *  For bugs or ommisions please email objcpp@johnholdsworth.com
+ *
+ *  Home page for updates and docs: http://objcpp.johnholdsworth.com
+ *
+ *  You may make commercial use of this source in applications without
+ *  charge but not sell it as source nor can you remove this notice from
+ *  this source if you redistribute. You can make any changes you like
+ *  to this code before redistribution but please annotate them below.
+ *
+ *  If you find it useful please send a donation via paypal to account
+ *  objcpp@johnholdsworth.com. Thanks.
+ *
+ *  THIS CODE IS PROVIDED “AS IS” WITHOUT WARRANTY OF ANY KIND EITHER
+ *  EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 
+ *  WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ *  IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+ *  WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
+ *  THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING
+ *  ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT
+ *  OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+ *  TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED 
+ *  BY YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH 
+ *  ANY OTHER PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN
+ *  ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ */
+
+#import <objc/runtime.h>
+#import <sqlite3.h>
+
+#import "objsql.h"
+
+#if 0
+#ifdef OODEBUG
+#define OODEBUG_SQL  1
+#endif
+#endif
+
+OOOODatabase OODB;
+
+static NSString *kOOObject = @"__OOOBJECT__", *kOOInsert = @"__ISINSERT__", *kOOUpdate = @"__ISUPDATE__", *kOOExecSQL = @"__OOEXEC__";
+
+#pragma mark OORecord abstract superclass for records
+
+@implementation OORecord
+
++ (id)record OO_AUTORETURNS {
+	return OO_AUTORELEASE( [[self alloc] init] );
+}
+
++ (id)insert OO_AUTORETURNS { 
+	OORecord *record = [self record];
+	[record insert];
+	return record;
+}
+
++ (id)insertWithParent:(id)parent {
+	return [[OODatabase sharedInstance] copyJoinKeysFrom:parent to:[self insert]];
+}
+
+- (id)insert { [[OODatabase sharedInstance] insert:self]; return self; }
+- (id)delete { [[OODatabase sharedInstance] delete:self]; return self; }
+
+- (void)update { [[OODatabase sharedInstance] update:self]; }
+- (void)indate { [[OODatabase sharedInstance] indate:self]; }
+- (void)upsert { [[OODatabase sharedInstance] upsert:self]; }
+
+- (int)commit { return [[OODatabase sharedInstance] commit]; }
+- (int)rollback { return [[OODatabase sharedInstance] rollback]; }
+
+// to handle null values for ints, floats etc.
+- (void)setNilValueForKey:(NSString *)key {
+	static OOReference<NSValue *> zeroForNull;
+	if ( !zeroForNull )
+		zeroForNull = [NSNumber numberWithInt:0];
+	[self setValue:zeroForNull forKey:key];
+}
+
++ (OOArray<id>)select {
+	return [[OODatabase sharedInstance] select:nil intoClass:self joinFrom:nil];
+}
+
++ (OOArray<id>)select:(cOOString)sql {
+	return [[OODatabase sharedInstance] select:sql intoClass:self joinFrom:nil];
+}
+
++ (OOArray<id>)selectRecordsRelatedTo:(id)parent {
+	return [[OODatabase sharedInstance] select:nil intoClass:self joinFrom:parent];
+}
+
+- (OOArray<id>)select {
+	return [[OODatabase sharedInstance] select:nil intoClass:[self class] joinFrom:self];
+}
+
+/**
+ import a flat file with column values separated by the delimiter specified into 
+ the table associated with this class.
+ */
+
++ (int)importFrom:(OOFile &)file delimiter:(cOOString)delim {
+	OOArray<id> rows = [OOMetaData import:file.string() intoClass:self delimiter:delim];
+	[[OODatabase sharedInstance] insertArray:rows];
+	return [OODatabase commit];
+}
+
+/**
+ Export a flat file with all rows in the table associated with the record subclass.
+ */
+
++ (BOOL)exportTo:(OOFile &)file delimiter:(cOOString)delim {
+	return file.save( [OOMetaData export:[self select] delimiter:delim] );
+}
+
+/**
+ populate a view with the string values taken from the ivars of the record
+ */
+
+- (void)bindToView:(OOView *)view delegate:(id)delegate {
+	[OOMetaData bindRecord:self toView:view delegate:delegate];
+}
+
+/**
+ When the delegate method os sent use this method to update the record's values
+ */
+
+- (void)updateFromView:(OOView *)view {
+	[OOMetaData updateRecord:self fromView:view];
+}
+
+/**
+ Default description is dictionary containing values of all ivars
+ */
+
+- (NSString *)description {
+	OOMetaData *metaData = [OOMetaData metaDataForClass:[self class]];
+	// hack required where record contains a field "description" to avoid recursion
+	OOStringArray ivars; ivars <<= *metaData->ivars; ivars -= "description";
+	return [*[metaData encode:[self dictionaryWithValuesForKeys:ivars]] description];
+}
+
+@end
+
+#pragma mark OOAdaptor - all methods required by objsql to access a database
+
+/**
+ An internal class representing the interface to a particular database, in this case sqlite3.
+ */
+
+@interface OOAdaptor : NSObject {
+	sqlite3 *db;
+	sqlite3_stmt *stmt;
+	struct _str_link { 
+		struct _str_link *next; char str[1]; 
+	} *strs;
+	OO_UNSAFE OODatabase *owner;
+}
+
+- initPath:(cOOString)path database:(OODatabase *)database;
+- (BOOL)prepare:(cOOString)sql;
+
+- (BOOL)bindCols:(cOOStringArray)columns values:(cOOValueDictionary)values startingAt:(int)pno bindNulls:(BOOL)bindNulls;
+- (OOArray<id>)bindResultsIntoInstancesOfClass:(Class)recordClass metaData:(OOMetaData *)metaData;
+- (sqlite_int64)lastInsertRowID;
+
+@end
+
+@interface NSData(OOExtras)
+- initWithDescription:(NSString *)description;
+@end
+
+#pragma mark OODatabase is the low level interface to a particular database
+
+@implementation OODatabase
+
+static OOReference<OODatabase *> sharedInstance;
+
+/**
+ By default database file is "objsql.db" in the user/application's "Documents" directory
+ and a single shared OODatabase instance used for all db operations.
+ */
+
++ (OODatabase *)sharedInstance {
+    if ( !sharedInstance )
+        [self sharedInstanceForPath:OODocument("objsql.db").path()]; 
+	return sharedInstance;
+}
+
+/**
+ Shared instance can be switched between any file paths.
+ */
+ 
+ + (OODatabase *)sharedInstanceForPath:(cOOString)path {
+     if ( !!sharedInstance )
+         sharedInstance = OONil;
+     if ( !!path )
+         OO_RELEASE( sharedInstance = [[OODatabase alloc] initPath:path] );
+	 return sharedInstance;
+}
+
++ (BOOL)exec:(cOOString)fmt, ... {
+	va_list argp; va_start(argp, fmt);
+	NSString *sql = [[NSString alloc] initWithFormat:fmt arguments:argp];
+	va_end( argp );
+	return [[self sharedInstance] exec:OO_AUTORELEASE( sql )];
+}
+
++ (OOArray<id>)select:(cOOString)select intoClass:(Class)recordClass joinFrom:(id)parent {
+	return [[self sharedInstance] select:select intoClass:recordClass joinFrom:parent];
+}
++ (OOArray<id>)select:(cOOString)select intoClass:(Class)recordClass {
+	return [[self sharedInstance] select:select intoClass:recordClass joinFrom:nil];
+}
++ (OOArray<id>)select:(cOOString)select {
+	return [[self sharedInstance] select:select intoClass:nil joinFrom:nil];
+}
+
++ (int)insertArray:(const OOArray<id> &)objects { return [[self sharedInstance] insertArray:objects]; }
++ (int)deleteArray:(const OOArray<id> &)objects { return [[self sharedInstance] deleteArray:objects]; }
+
++ (int)insert:(id)object { return [[self sharedInstance] insert:object]; }
++ (int)delete:(id)object { return [[self sharedInstance] delete:object]; }
++ (int)update:(id)object { return [[self sharedInstance] update:object]; }
+
++ (int)indate:(id)object { return [[self sharedInstance] indate:object]; }
++ (int)upsert:(id)object { return [[self sharedInstance] upsert:object]; }
+
++ (int)commit { return [[self sharedInstance] commit]; }
++ (int)rollback { return [[self sharedInstance] rollback]; }
++ (int)commitTransaction { return [[OODatabase sharedInstance] commitTransaction]; }
+
+/**
+ Designated initialiser for OODatabase instances. Generally only the shared instance is used
+ and the OODatabase class object is messaged instead.
+ */
+
+- initPath:(cOOString)path {
+	if ( self = [super init] )
+		OO_RELEASE( adaptor = [[OOAdaptor alloc] initPath:path database:self] );
+	return self;
+}
+
+/**
+ Automatically register all classes which are subclasses of a record abstract superclass (e.g. OORecord).
+ */
+
+- (OOStringArray)registerSubclassesOf:(Class)recordSuperClass {
+	int numClasses = objc_getClassList( NULL, 0 );
+	Class *classes = (Class *)malloc( sizeof *classes * numClasses );
+	OOArray<Class> viewClasses;
+	OOStringArray classNames;
+
+	// scan all registered classes for relevant subclasses
+	numClasses = objc_getClassList( classes, numClasses );
+	for ( int c=0 ; c<numClasses ; c++ ) {
+		Class superClass = classes[c];
+        if ( class_getName( superClass )[0] != '_' )
+            while ( (superClass = class_getSuperclass( superClass )) )
+                if ( superClass == recordSuperClass ) {
+                    if ( [classes[c] respondsToSelector:@selector(ooTableSql)] )
+                        viewClasses += classes[c];
+                    else {
+                        [[OODatabase sharedInstance] tableMetaDataForClass:classes[c]];
+                        classNames += class_getName( classes[c] );
+                    }
+                    break;
+                }
+	}
+
+	// delay creation views until after tables
+	for ( int c=0 ; c<viewClasses ; c++ ) {
+		[[OODatabase sharedInstance] tableMetaDataForClass:viewClasses[c]];
+		classNames += class_getName( viewClasses[c] );
+	}
+
+	// return classes in order registered
+	free( classes );
+	return classNames;
+}
+
+/**
+ Register a list of classes before using them so OODatabase can determine the relationships between them.
+ */
+
+- (void)registerTableClassesNamed:(cOOStringArray)classes {
+	for ( NSString *tableClass in *classes )
+		[self tableMetaDataForClass:[[NSBundle mainBundle] classNamed:tableClass]];
+}
+
+/**
+ Send any SQL to the database. Sql is a format string so escape any '%' characters using '%%'.
+ Any results returned are placed as an array of dictionary values in the database->results.
+ */
+ 
+- (BOOL)exec:(cOOString)fmt, ... {
+	va_list argp; va_start(argp, fmt);
+	NSString *sql = [[NSString alloc] initWithFormat:fmt arguments:argp];
+	va_end( argp );
+	results = [self select:sql intoClass:NULL joinFrom:nil];
+	OO_RELEASE( sql );
+	return !errcode;
+}
+
+/**
+ Return a single value from row 1, column one from sql sent to the database as a string.
+ */
+
+- (OOString)stringForSql:(cOOString)fmt, ... {
+	va_list argp; va_start(argp, fmt);
+	NSString *sql = OO_AUTORELEASE( [[NSString alloc] initWithFormat:fmt arguments:argp] );
+	va_end( argp );
+	if( [self exec:"%@", sql] && results > 0 ) {
+		NSString *aColumnName = [[**results[0] allKeys] objectAtIndex:0];
+		return [(NSNumber *)(*results[0])[aColumnName] stringValue];
+	}
+	else
+		return nil;
+}
+
+/**
+ Used to initialise new child records automatically from parent in relation.
+ */
+
+- (id)copyJoinKeysFrom:(id)parent to:(id)newChild {
+	OOMetaData *parentMetaData = [self tableMetaDataForClass:[parent class]],
+			*childMetaData = [self tableMetaDataForClass:[newChild class]];
+	OOStringArray commonColumns = [parentMetaData naturalJoinTo:childMetaData->columns]; ////
+	OOValueDictionary keyValues = [parentMetaData encode:[parent dictionaryWithValuesForKeys:commonColumns]];
+	[newChild setValuesForKeysWithDictionary:[childMetaData decode:keyValues]];
+	return newChild;
+}
+
+/**
+ Build a where clause for the columns specified.
+ */
+
+- (OOString)whereClauseFor:(cOOStringArray)columns values:(cOOValueDictionary)values qualifyNulls:(BOOL)qualifyNulls {
+	OOString out;
+	for ( int i=0 ; i<columns ; i++ ) {
+		NSString *name = *columns[i];
+		const char *prefix = i==0 ?"\nwhere":" and";
+
+		id value = values[name];
+		if ( value == OONull )
+			out += qualifyNulls ? OOFormat( @"%s\n\t%@ is NULL", prefix, name ) : @"";
+		else if ( !qualifyNulls && [value isKindOfClass:[NSString class]] &&
+                 [value rangeOfString:@"%"].location != NSNotFound )
+			out += OOFormat( @"%s\n\t%@ LIKE ?", prefix, name );
+		else
+			out += OOFormat( @"%s\n\t%@ = ?", prefix, name );
+	}
+	return out;
+}
+
+/**
+ Prepare the sql passed in adding a where clause with bindings for a join to values taken from the parent record.
+ */
+
+- (BOOL)prepareSql:(OOString &)sql joinFrom:(id)parent toTable:(OOMetaData *)metaData {
+	OOValueDictionary joinValues;
+	OOStringArray sharedColumns;
+
+	if ( parent ) {
+		OOMetaData *parentMetaData = [self tableMetaDataForClass:[parent class]];
+		sharedColumns = [parentMetaData naturalJoinTo:metaData->joinableColumns];
+		joinValues = [parentMetaData encode:[parent dictionaryWithValuesForKeys:sharedColumns]];
+
+		sql += [self whereClauseFor:sharedColumns values:joinValues qualifyNulls:NO];
+	}
+
+	if ( [metaData->recordClass respondsToSelector:@selector(ooOrderBy)] )
+		sql += OOFormat( @"\norder by %@", [metaData->recordClass ooOrderBy] );
+
+#ifdef OODEBUG_SQL
+	NSLog( @"-[OOMetaData prepareSql:] %@\n%@", *sql, *joinValues );
+#endif
+
+	if ( ![*adaptor prepare:sql] )
+		return NO;
+
+	return !parent || [*adaptor bindCols:sharedColumns values:joinValues startingAt:1 bindNulls:NO];
+}
+
+/**
+ Determine a list of the tables which have a natural join to the record passed in.
+ If the record is a specific instance of from a table this should determine if
+ there are any record which exist using the join.
+ */
+
+- (OOArray<OOMetaData *>)tablesRelatedByNaturalJoinFrom:(id)record {
+	OOMetaData *metaData = [record class] == [OOMetaData class] ? 
+        record : [self tableMetaDataForClass:[record class]];
+
+	OOStringArray tablesWithNaturalJoin;
+	tablesWithNaturalJoin <<= metaData->tablesWithNaturalJoin;
+
+	if ( record && record != metaData )
+		for ( int i=0 ; i<tablesWithNaturalJoin ; i++ ) {
+			OOString sql = OOFormat( @"select count(*) as result from %@", **tablesWithNaturalJoin[i] );
+			OOMetaData *childMetaData = tableMetaDataByClassName[tablesWithNaturalJoin[i]];
+
+			[self prepareSql:sql joinFrom:record toTable:childMetaData];
+			OOArray<OODictionary<NSNumber *> > tmpResults = [*adaptor bindResultsIntoInstancesOfClass:NULL metaData:nil];
+
+			if ( ![(*tmpResults[0])["result"] intValue] )
+				~tablesWithNaturalJoin[i--];
+		}
+
+	return tableMetaDataByClassName[+tablesWithNaturalJoin];
+}
+
+/**
+ Perform a select from a table on the database using either the sql specified 
+ orselect all columns from the table associated with the record class passed in.
+ If a parent is passed in make a natural join from that record.
+ */
+
+- (OOArray<id>)select:(cOOString)select intoClass:(Class)recordClass joinFrom:(id)parent {
+	OOMetaData *metaData = [self tableMetaDataForClass:recordClass ? recordClass : [parent class]];
+	OOString sql = !select ?
+        OOFormat( @"select %@\nfrom %@", *(metaData->outcols/", "), *metaData->tableName ) : *select;
+
+	if ( ![self prepareSql:sql joinFrom:parent toTable:metaData] )
+		return nil;
+
+	return [*adaptor bindResultsIntoInstancesOfClass:recordClass metaData:metaData];
+}
+
+- (OOArray<id>)select:(cOOString)select intoClass:(Class)recordClass {
+	return [self select:select intoClass:recordClass joinFrom:nil];
+}
+
+- (OOArray<id>)select:(cOOString)select {
+	return [self select:select intoClass:nil joinFrom:nil];
+}
+
+/**
+ Returns sqlite3 row identifier for a record instance.
+ */
+
+- (long long)rowIDForRecord:(id)record {
+	OOMetaData *metaData = [self tableMetaDataForClass:[record class]];
+	OOString sql = OOFormat( @"select ROWID from %@", *metaData->tableName );
+	OOArray<OODictionary<NSNumber *> > idResults = [self select:sql intoClass:nil joinFrom:record];
+	return [*(*idResults[0])[@"rowid"] longLongValue];
+}
+
+/**
+ Returns sqlite3 row identifier for last inserted record.
+ */
+
+- (long long)lastInsertRowID {
+	return [*adaptor lastInsertRowID];
+}
+
+/**
+ Insert an array of record objects into the database. This needs to be commited to take effect.
+ */
+
+- (int)insertArray:(const OOArray<id> &)objects {
+	int count = 0;
+	for ( id object in *objects )
+		count = [self insert:object];
+	return count;
+}
+
+/**
+ Delete an array of record objects from the database. This needs to be commited to take effect.
+ */
+
+- (int)deleteArray:(const OOArray<id> &)objects {
+	int count = 0;
+	for ( id object in *objects )
+		if ( ![object respondsToSelector:@selector(delete)] )
+			count = [self delete:object];
+		else {
+			[object delete];
+			count++;
+		}
+	return count;
+}
+
+/**
+ Insert the values of the record class instance at the time this method was called into the db.
+ (must be commited to take effect). Returns the total number of outstanding inserts/updates/deletes.
+ */
+
+- (int)insert:(id)record {
+	return transaction += OOValueDictionary( kOOObject, record, kOOInsert, kCFNull, nil );
+}
+
+/**
+ Use the values of the record instance at the time this method is called in a where clause to 
+ delete from the database when commit is called. Returns the total number of outstanding
+ inserts/updates/deletes.
+ */
+
+- (int)delete:(id)record {
+	return transaction += OOValueDictionary( kOOObject, record, nil );
+}
+
+/**
+ Call this method if you intend to make changes to the record object and save them to the database.
+ This takes a snapshot of the previous values to use as a key for the update operation when "commit"
+ is called. Returns the total number of outstanding inserts/updates/deletes.
+ */
+
+- (int)update:(id)record {
+	OOMetaData *metaData = [self tableMetaDataForClass:[record class]];
+	OOValueDictionary oldValues = [metaData encode:[record dictionaryWithValuesForKeys:metaData->columns]];
+	for ( NSString *key in *metaData->tocopy )
+		OO_RELEASE( oldValues[key] = [oldValues[key] copy] );
+	oldValues[kOOUpdate] = OONull;
+	oldValues[kOOObject] = record;
+	return transaction += oldValues;
+}
+
+/**
+ Inserts a record into the database the deletes any previous record with the same key.
+ This ensures the record's rowid changes if this is used by child records.
+ */
+
+- (int)indate:(id)record {
+	OOMetaData *metaData = [self tableMetaDataForClass:[record class]];
+	OOString sql = OOFormat( @"select rowid from %@", *metaData->tableName );
+	OOArray<id> existing = [self select:sql intoClass:nil joinFrom:record];
+	int count = [self insert:record];
+	for ( NSDictionary *exist in *existing ) {
+		OOString sql = OOFormat( @"delete from %@ where rowid = %ld", *metaData->tableName, 
+								(long)[[exist objectForKey:@"rowid"] longLongValue] );
+		transaction += OOValueDictionary( kOOExecSQL, *sql, nil );
+	}
+	return count;
+}
+
+/**
+ Inserts a record into the database unless another record with the same key column values
+ exists in which case it will do an update of the previous record (preserving the ROWID.)
+ */
+
+- (int)upsert:(id)record {
+	OOArray<id> existing = [self select:nil intoClass:[record class] joinFrom:record];
+	if ( existing > 1 )
+		OOWarn( @"-[ODatabase upsert:] Duplicate record for upsert: %@", record );
+	if ( existing > 0 ) {
+		[self update:existing[0]];
+		(*transaction[-1])[kOOObject] = record;
+		return transaction;
+	}
+	else
+		return [self insert:record];
+}
+
+/**
+ Commit all pending inserts, updates and deletes to the database. Use commitTransaction to perform 
+ this inside a database transaction.
+ */
+
+- (int)commit {
+	int commited = 0;
+
+	for ( int i=0 ; i<transaction ; i++ ) {
+		OOValueDictionary values = transaction[i];
+		OOString exec = (NSMutableString *)~values[kOOExecSQL];
+		if ( !!exec ) {
+			if ( ![self exec:@"%@", *exec] )
+				OOWarn( @"-[ODatabase commit] Error in transaction exec: %@ - %s", *exec, errmsg );
+			continue;
+		}
+
+		OORef<NSObject *> object = *values[kOOObject]; values -= kOOObject;
+		BOOL isInsert = !!~values[kOOInsert], isUpdate = !!~values[kOOUpdate];
+
+		OOMetaData *metaData = [self tableMetaDataForClass:[object class]];
+		OOValueDictionary newValues = [metaData encode:[object dictionaryWithValuesForKeys:metaData->columns]];
+		OOStringArray changedCols;
+
+		if ( isUpdate ) {
+			for ( NSString *name in *metaData->columns )
+				if ( ![*newValues[name] isEqual:values[name]] )
+					changedCols += name;
+		}
+		else 
+			values = newValues;
+
+		OOString sql = isInsert ? 
+		OOFormat( @"insert into %@ (%@) values (", *metaData->tableName, *(metaData->columns/", ") ) :
+		OOFormat( isUpdate ? @"update %@ set" : @"delete from %@", *metaData->tableName );
+
+		int nchanged = changedCols;
+		if ( isUpdate && nchanged == 0 ) {
+			OOWarn( @"%s %@ (%@)", errmsg = (char *)"-[ODatabase commit:] Update of unchanged record", *object, *(lastSQL = sql) );
+			continue;
+		}
+
+		for ( int i=0 ; i<nchanged ; i++ )
+			sql += OOFormat( @"%s\n\t%@ = ?", i==0 ? "" : ",", **changedCols[i] );
+
+		if ( isInsert ) {
+			OOString quote = "?", commaQuote = ", ?";
+			for ( int i=0 ; i<metaData->columns ; i++ )
+				sql += i==0 ? quote : commaQuote;
+			sql += ")";
+		}
+		else
+			sql += [self whereClauseFor:metaData->columns values:values qualifyNulls:YES];
+
+#ifdef OODEBUG_SQL
+		NSLog( @"-[OODatabase commit]: %@ %@", *sql, *values );
+#endif
+
+		if ( ![*adaptor prepare:sql] )
+			continue;
+
+		if ( isUpdate )
+			[*adaptor bindCols:changedCols values:newValues startingAt:1 bindNulls:YES];
+		[*adaptor bindCols:metaData->columns values:values startingAt:1+nchanged bindNulls:isInsert];
+
+		[*adaptor bindResultsIntoInstancesOfClass:nil metaData:metaData];
+		commited += updateCount;
+	}
+
+	transaction = nil;
+	return commited;
+}
+
+/**
+ Commit all pending inserts, updates, deletes to the database inside a transaction.
+ */
+
+- (int)commitTransaction {
+	[self exec:"BEGIN TRANSACTION"];
+	int updated = [self commit];
+	return [self exec:"COMMIT"] ? updated : 0;
+}
+
+/**
+ Rollback any outstanding inserts, updates, or deletes. Please note updated values 
+ are also rolled back inside the actual record in the application as well.
+ */
+
+- (int)rollback {
+	for ( NSMutableDictionary *d in *transaction ) {
+		OODictionary<id> values = d;
+
+		if ( !!~values[kOOUpdate] ) {
+			OORef<OORecord *> record = ~values[kOOObject];
+			OOMetaData *metaData = [self tableMetaDataForClass:[*record class]];
+
+#ifndef OO_ARC
+			for ( NSString *name in *metaData->boxed )
+                OO_RELEASE( (id)[[*record valueForKey:name] pointerValue] );
+#endif
+
+			[*record setValuesForKeysWithDictionary:[metaData decode:values]];
+		}
+	}
+	return (int)[*~transaction count];
+}
+
+/**
+ Find/create an instance of the OOMetaData class which describes a record class and its associated table.
+ If the table does not exist it will be created along with indexes for columns/ivars which have 
+ upper case names for use in joins. Details of the tables parameters can be controlled by using
+ methods in the OOTableCustomisation protool. If it does not exist a meta table class which
+ prepresents OOMetaData records themselves is also created from which the list of all registered
+ tables can be selected.
+ */
+ 
+- (OOMetaData *)tableMetaDataForClass:(Class)recordClass {
+	if ( !recordClass || recordClass == [OOMetaData class] )
+		return [OOMetaData metaDataForClass:[OOMetaData class]];
+
+	OOString className = class_getName( recordClass );
+	OOMetaData *metaData = tableMetaDataByClassName[className];
+
+	if ( !metaData ) {
+		metaData = [OOMetaData metaDataForClass:recordClass];
+
+#ifdef OODEBUG_SQL
+		NSLog(@"\n%@", *metaData->createTableSQL);
+#endif
+
+		if ( metaData->tableName[0] != '_' && 
+			[self stringForSql:"select count(*) from sqlite_master where name = '%@'",
+             *metaData->tableName] == "0" )
+			if ( [self exec:"%@", *metaData->createTableSQL] )
+				for ( NSString *idx in *metaData->indexes )
+					if ( ![self exec:idx] )
+						OOWarn( @"-[OOMetaData tableMetaDataForClass:] Error creating index: %@", idx );
+
+		tableMetaDataByClassName[className] = metaData;
+	}
+
+	return metaData;
+}
+
+@end
+
+#pragma mark OOAdaptor - implements all access to a particular database 
+
+@implementation OOAdaptor 
+
+/**
+ Connect to/create sqlite3 database
+ */
+
+- (OOAdaptor *)initPath:(cOOString)path database:(OODatabase *)database {
+    if ( self = [super init] ) {
+        owner = database;
+        OOFile( OOFile( path ).directory() ).mkdir();
+        if ( (owner->errcode = sqlite3_open( path, &db )) != SQLITE_OK ) {
+            OOWarn( @"-[OOAdaptor initPath:database:] Error opening database at path: %@", *path );
+            return nil;
+        }
+    }
+	return self;
+}
+
+/**
+ Prepare a sql statement after which values can be bound and results returned.
+ */
+
+- (BOOL)prepare:(cOOString)sql {
+	if ( (owner->errcode = sqlite3_prepare_v2( db, owner->lastSQL = sql, -1, &stmt, 0 )) != SQLITE_OK )
+		OOWarn(@"-[OOAdaptor prepare:] Could not prepare sql: \"%@\" - %s", *owner->lastSQL, owner->errmsg = (char *)sqlite3_errmsg( db ) );
+	return owner->errcode == SQLITE_OK;
+}
+
+- (int)bindValue:(id)value asParameter:(int)pno {
+#ifdef OODEBUG_BIND
+	NSLog( @"-[OOAdaptor bindValue:bindValue:] bind parameter #%d as: %@", pno, value );
+#endif
+	if ( !value || value == OONull )
+		return sqlite3_bind_null( stmt, pno );
+#if OOSQL_THREAD_SAFE_BUT_USES_MORE_MEMORY
+	else if ( [value isKindOfClass:[NSString class]] )
+		return sqlite3_bind_text( stmt, pno, [value UTF8String], -1, SQLITE_STATIC );
+#else
+	else if ( [value isKindOfClass:[NSString class]] ) {
+		int len = (int)[value lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
+		struct _str_link *str = (struct _str_link *)malloc( sizeof *str + len );
+		str->next = strs;
+		strs = str;
+		[value getCString:str->str maxLength:len+1 encoding:NSUTF8StringEncoding];
+		return sqlite3_bind_text( stmt, pno, str->str, len, SQLITE_STATIC );
+	}
+#endif
+	else if ( [value isKindOfClass:[NSData class]] )
+		return sqlite3_bind_blob( stmt, pno, [value bytes], (int)[value length], SQLITE_STATIC );
+
+	const char *type = [value objCType];
+	if ( type )
+		switch ( type[0] ) {
+			case 'c': case 's': case 'i': case 'l':
+			case 'C': case 'S': case 'I': case 'L':
+				return sqlite3_bind_int( stmt, pno, [value intValue] );
+			case 'q': case 'Q':
+				return sqlite3_bind_int64( stmt, pno, [value longLongValue] );
+			case 'f': case 'd':
+				return sqlite3_bind_double( stmt, pno, [value doubleValue] );
+		}
+
+	OOWarn( @"-[OOAdaptor bindValue:bindValue:] Undefined type in bind of parameter #%d: %s, value: %@", pno, type, value );
+	return -1;
+}
+
+/**
+ Bind parameters from a prepared SQL statement. The "objCType" method is used to determine the type to bind.
+ */
+
+- (BOOL)bindCols:(cOOStringArray)columns values:(cOOValueDictionary)values startingAt:(int)pno bindNulls:(BOOL)bindNulls {
+	int errcode;
+	for ( NSString *name in *columns )
+		if ( bindNulls || *values[name] != OONull )
+			if ( (errcode = [self bindValue:values[name] asParameter:pno++]) != SQLITE_OK )
+				OOWarn( @"-[OOAdaptor bindCols:...] Bind failed column: %@ - %s (%d)", name, owner->errmsg = (char *)sqlite3_errmsg( db ), owner->errcode = errcode );
+	return owner->errcode == SQLITE_OK;
+}
+
+/**
+ Return a dictionary containing the values for a row returned by the database from a select.
+ These values need to be decoded using a classes metadata to set the ivar values later.
+ */
+
+- (OOValueDictionary)valuesForNextRow {
+	int ncols = sqlite3_column_count( stmt );
+	OOValueDictionary values;
+
+	for ( int i=0 ; i<ncols ; i++ ) {
+		OOString name = sqlite3_column_name( stmt, i );
+		id value = nil;
+
+		switch ( sqlite3_column_type( stmt, i ) ) {
+			case SQLITE_NULL:
+				value = OONull;
+				break;
+			case SQLITE_INTEGER:
+				value = [[NSNumber alloc] initWithLongLong:sqlite3_column_int64( stmt, i )]; 
+				break;
+			case SQLITE_FLOAT:
+				value = [[NSNumber alloc] initWithDouble:sqlite3_column_double( stmt, i )]; 
+				break;
+			case SQLITE_TEXT: {
+				const unsigned char *bytes = sqlite3_column_text( stmt, i );
+				value = [[NSMutableString alloc] initWithBytes:bytes
+														length:sqlite3_column_bytes( stmt, i) 
+													  encoding:NSUTF8StringEncoding];
+			}
+				break;
+			case SQLITE_BLOB: {
+				const void *bytes = sqlite3_column_blob( stmt, i );
+				value = [[NSData alloc] initWithBytes:bytes length:sqlite3_column_bytes( stmt, i )];
+			}
+				break;
+			default:
+				OOWarn( @"-[OOAdaptor valuesForNextRow:] Invalid type on bind of ivar %@: %d", *name, sqlite3_column_type( stmt, i ) );
+		}
+
+		values[name] = value;
+		OO_RELEASE( value );
+	}
+
+	return values;
+}
+
+/**
+ Create instances of the recordClass to store results from a database select or if the record
+ class is not present return a list of dictionary objects with the raw results.
+ */
+
+- (OOArray<id>)bindResultsIntoInstancesOfClass:(Class)recordClass metaData:(OOMetaData *)metaData {
+	OOArray<id> out;
+	BOOL awakeFromDB = [recordClass instancesRespondToSelector:@selector(awakeFromDB)];
+
+	while( (owner->errcode = sqlite3_step( stmt )) == SQLITE_ROW ) {
+		OOValueDictionary values = [self valuesForNextRow];
+		if ( recordClass ) {
+			id record = [[recordClass alloc] init];
+			[record setValuesForKeysWithDictionary:[metaData decode:values]];
+
+			if ( awakeFromDB )
+				[record awakeFromDB];
+
+			out += record;
+			OO_RELEASE( record );
+		}
+		else
+			out += values;
+	}
+
+	if ( owner->errcode != SQLITE_DONE )
+		OOWarn(@"-[OOAdaptor bindResultsIntoInstancesOfClass:metaData:] Not done (bind) stmt: %@ - %s", *owner->lastSQL, owner->errmsg = (char *)sqlite3_errmsg( db ) );
+	else {
+		owner->errcode = SQLITE_OK;
+		out.alloc();
+	}
+
+	while ( strs != NULL ) {
+		struct _str_link *next = strs->next;
+		free( strs );
+		strs = next;
+	}
+	owner->updateCount = sqlite3_changes( db );
+	sqlite3_finalize( stmt );
+	return out;
+}
+
+- (sqlite_int64)lastInsertRowID {
+	return sqlite3_last_insert_rowid( db );
+}
+
+- (void) dealloc {
+	sqlite3_close( db );
+	OO_DEALLOC( super );
+}
+
+@end
+
+#pragma mark OOMetaData instances represent a table in the database and it's record class
+
+@implementation OOMetaData
+
+static OODictionary<OOMetaData *> metaDataByClass;
+static OOMetaData *tableOfTables;
+
++ (NSString *)ooTableTitle { return @"Table MetaData"; }
+
++ (OOMetaData *)metaDataForClass:(Class)recordClass OO_RETURNS {
+	if ( !tableOfTables )
+		OO_RELEASE( tableOfTables = [[OOMetaData alloc] initClass:[OOMetaData class]] );
+	OOMetaData *metaData = metaDataByClass[recordClass];
+	if ( !metaData )
+		OO_RELEASE( metaData = [[OOMetaData alloc] initClass:recordClass] );
+	return metaData;
+}
+
++ (OOArray<id>)selectRecordsRelatedTo:(id)record {
+	return [[OODatabase sharedInstance] tablesRelatedByNaturalJoinFrom:record];
+}
+
+- initClass:(Class)aClass {
+    if ( !(self = [super init]) )
+        return self;
+    recordClass = aClass;
+    metaDataByClass[recordClass] = self;
+	recordClassName = class_getName( recordClass );
+	tableTitle = [recordClass respondsToSelector:@selector(ooTableTitle)] ?
+        [recordClass ooTableTitle] : *recordClassName;
+	tableName = [recordClass respondsToSelector:@selector(ooTableName)] ?
+        [recordClass ooTableName] : *recordClassName;
+  
+	if ( aClass == [OOMetaData class] ) {
+		ivars = columns = outcols = boxed = unbox =
+            "tableTitle tableName recordClassName keyColumns ivars columns outcols";
+		return self;
+	}
+
+	createTableSQL = OOFormat( @"create table %@ (", *tableName );
+
+	OOArray<Class> hierarchy;
+	do
+		hierarchy += aClass;
+	while ( (aClass = [aClass superclass]) && aClass != [NSObject class] );
+
+	for ( int h=(int)hierarchy-1 ; h>=0 ; h-- ) {
+		aClass = (Class)hierarchy[h]; ///
+        Ivar *ivarInfo = class_copyIvarList( aClass, NULL );
+		if ( !ivarInfo )
+			continue;
+
+		for ( int in=0 ; ivarInfo[in] ; in++ ) {
+			OOString columnName = ivar_getName( ivarInfo[in] );
+			ivars += columnName;
+
+			OOString type = types[columnName] = ivar_getTypeEncoding( ivarInfo[in] ), dbtype = "";
+
+            SEL columnSel = sel_getUid(columnName);
+			switch ( type[0] ) {
+				case 'c': case 's': case 'i': case 'l':
+				case 'C': case 'S': case 'I': case 'L':
+				case 'q': case 'Q':
+					dbtype = @"int";
+					break;
+				case 'f': case 'd':
+					dbtype = @"real";
+					break;
+				case '{':
+                    static OOPattern isOORef( "=\"ref\"@\"NS" );
+					if( !(type & isOORef) )
+						OOWarn( @"-[OOMetaData initClass:] Invalid structure type for ivar %@ in class %@: %@", *columnName, *recordClassName, *type );
+					boxed += columnName;
+					if ( ![recordClass instancesRespondToSelector:columnSel] ) {
+						unbox += columnName;
+						if ( [[recordClass superclass] instancesRespondToSelector:columnSel] )
+							OOWarn( @"-[OOMetaData initClass:] Superclass of class %@ is providing method for column: %@", *recordClassName, *columnName );
+					}
+				case '@':
+                    static OOPattern isNSString( "NS(Mutable)?String\"" ),
+                        isNSDate( "\"NSDate\"" ), isNSData( "NS(Mutable)?Data\"" );
+					if ( type & isNSString )
+						dbtype = @"text";
+					else if ( type & isNSDate ) {
+						dbtype = @"real";
+						dates += columnName;
+					}
+					else {
+						if ( !(type & isNSData) )
+							archived += columnName;
+						blobs += columnName;
+						dbtype = @"blob";
+					}
+					break;
+				default:
+					OOWarn( @"-[OOMetaData initClass:] Unknown data type '%@' in class %@", *type, *tableName );
+					archived += columnName;
+					blobs += columnName;
+					dbtype = @"blob";
+					break;
+			}
+
+			if ( dbtype == @"text" )
+				tocopy += columnName;
+
+			if ( columnName == @"rowid" || columnName == @"ROWID" ||
+                columnName == @"OID" || columnName == @"_ROWID_" ) {
+				outcols += columnName;
+				continue;
+			}
+
+			createTableSQL += OOFormat(@"%s\n\t%@ %@ /* %@ */",
+                                       !columns?"":",", *columnName, *dbtype, *type );
+
+			if ( iswupper( columnName[columnName[0] != '_' ? 0 : 1] ) )
+				indexes += OOFormat(@"create index %@_%@ on %@ (%@)\n",
+									*tableName, *columnName,
+									*tableName, *columnName);
+
+            if ( class_getName( [aClass superclass] )[0] != '_' ) {
+                columns += columnName;
+                outcols += columnName;
+                joinableColumns += columnName;
+            }
+        }
+
+        free( ivarInfo );
+    }
+
+	if ( [recordClass respondsToSelector:@selector(ooTableKey)] )
+		createTableSQL += OOFormat( @",\n\tprimary key (%@)",
+                                   *(keyColumns = [recordClass ooTableKey]) );
+
+	if ( [recordClass respondsToSelector:@selector(ooConstraints)] )
+		createTableSQL += OOFormat( @",\n\t%@", [recordClass ooConstraints] );
+
+	createTableSQL += "\n)\n";
+
+	if ( [recordClass respondsToSelector:@selector(ooTableSql)] ) {
+		createTableSQL = [recordClass ooTableSql];
+		indexes = nil;
+	}
+
+	tableOfTables->tablesWithNaturalJoin += recordClassName;
+	tablesWithNaturalJoin += recordClassName;
+
+	for( Class other in [*metaDataByClass allKeys] ) {
+		OOMetaData *otherMetaData = metaDataByClass[other];
+		if ( other == recordClass || otherMetaData == tableOfTables )
+			continue;
+
+		if ( [self naturalJoinTo:otherMetaData->joinableColumns] > 0 )
+			tablesWithNaturalJoin += otherMetaData->recordClassName;
+		if ( [otherMetaData naturalJoinTo:joinableColumns] > 0 )
+			otherMetaData->tablesWithNaturalJoin += recordClassName;
+	}
+
+	return self;
+}
+
+/**
+ Find the columns shared between two classes and that have upper case names (are indexed).
+ */
+
+- (OOStringArray)naturalJoinTo:(cOOStringArray)to {
+    //NSLog( @"%@ -- %@", *columns, *to );
+	OOStringArray commonColumns = columns & to;
+	for ( int i=0 ; i<commonColumns ; i++ )
+		if ( islower( (*commonColumns[i])[0] ) )
+			~commonColumns[i--];
+	return commonColumns;
+}
+
+/**
+ Encode values ready for insertion into the database (convert OOString to NSString etc.)
+ */
+
+- (cOOValueDictionary)encode:(cOOValueDictionary)values {
+    //NSLog( @"%@ - unbox: %@, dates: %@, archived: %@", *values, *unbox, *dates, *archived );
+	for ( NSString *key in *unbox ) {
+		id value = (id)[*values[key] pointerValue];
+		values[key] = value ? value : OONull;
+	}
+	for ( NSString *key in *dates )
+		values[key] = [NSNumber numberWithDouble:[(id)values[key] timeIntervalSince1970]];
+	for ( NSString *key in *archived )
+		values[key] = (NSValue *)[NSKeyedArchiver archivedDataWithRootObject:values[key]];
+	return values;
+}
+
+/**
+ Decode values taken from the database for use in [record setValuesForKeysWithDictionary:values];
+ */
+
+#ifdef OO_ARC
+void ooArcRetain( id value ) {
+    // hack to retain value encoded as pointer
+    if ( value && value != OONull ) {
+        static IMP retainIMP;
+        static SEL retainSEL;
+        if ( !retainIMP ) {
+            retainSEL = sel_getUid( "retain" );
+            Method method = class_getInstanceMethod( [value class], retainSEL );
+            retainIMP = method_getImplementation( method );
+        }
+        retainIMP( value, retainSEL );
+    }
+}
+#endif
+
+- (cOOValueDictionary)decode:(cOOValueDictionary)values {
+	id value;
+	for ( NSString *key in *archived )
+		if ( (value = values[key]) )
+			values[key] = [NSKeyedUnarchiver unarchiveObjectWithData:(NSData *)value];
+	for ( NSString *key in *dates )
+		if ( (value = values[key]) )
+			values[key] = [NSDate dateWithTimeIntervalSince1970:[value doubleValue]];
+	for ( NSString *key in *boxed ) {
+		if ( (value = values[key]) ) {
+			value = value != OONull ? OO_RETAIN( value ) : nil;
+#ifdef OO_ARC
+            ooArcRetain( value );
+#endif
+			OO_RELEASE( values[key] = [[NSValue alloc] initWithBytes:&value objCType:@encode(id)] );
+		}
+	}
+	return values;
+}
+
+/**
+ import values for a list of nodes selected from an XML document.
+ */
+
++ (OOArray<id>)import:(const OOArray<OODictionary<OOString> > &)nodes intoClass:(Class)recordClass {
+	OOMetaData *metaData = [self metaDataForClass:recordClass];
+	OOArray<id> out;
+
+	for ( NSMutableDictionary *dict in *nodes ) {
+		OOStringDictionary node = dict, values;
+		for ( NSString *ivar in *metaData->columns )
+			values[ivar] = node[ivar];
+
+		id record = [[recordClass alloc] init];
+		[record setValuesForKeysWithDictionary:[metaData decode:values]];
+		out += record;
+		OO_RELEASE( record );
+	}
+
+	return out;
+}
+
+/**
+ Convert a string taken from a flat file into record instances which can be inserted into the database.
+ */
+
++ (OOArray<id>)import:(cOOString)string intoClass:(Class)recordClass delimiter:(cOOString)delim {
+	OOMetaData *metaData = [self metaDataForClass:recordClass];
+	// remove escaped newlines then split by newline
+	OOStringArray lines = (string - @"\\\\\n") / @"\n";
+	lines--; // pop last empty line
+
+	OOArray<id> out;
+	for ( int l=0 ; l<lines ; l++ ) {
+		OODictionary<NSString *> values;
+		values[metaData->columns] = *lines[l] / delim;
+
+		// empty columns are taken as null values
+		for ( NSString *key in *metaData->columns )
+			if ( [*values[key] isEqualToString:@""] )
+				values[key] = OONull;
+
+		// convert description strings to NSData
+		for ( NSString *key in *metaData->blobs )
+			OO_RELEASE( values[key] = (NSString *)[[NSData alloc] initWithDescription:values[key]] );
+
+		id record = [[recordClass alloc] init];
+		[record setValuesForKeysWithDictionary:[metaData decode:values]];
+		out += record;
+		OO_RELEASE( record );
+	}
+
+	return out;
+}
+
+/**
+ Convert a set of records selected from the database into a string which can be saved to disk.
+ */
+
++ (OOString)export:(const OOArray<id> &)array delimiter:(cOOString)delim {
+	OOMetaData *metaData = nil;
+	OOString out;
+
+	for ( id record in *array ) {
+		if ( !metaData )
+			metaData = [record isKindOfClass:[NSDictionary class]] ?
+                OONull : [self metaDataForClass:[record class]];
+
+		OODictionary<NSNumber *> values = metaData == OONull ? record : 
+		*[metaData encode:[record dictionaryWithValuesForKeys:metaData->columns]];
+
+		OOStringArray line;
+		NSString *blank = @"";
+		for ( NSString *key in *metaData->columns )
+			line += *values[key] != OONull ? [values[key] stringValue] : blank;
+
+		out += line/delim+"\n";
+	}
+
+	return out;
+}
+
+/**
+ Bind a record to a view containing elements which are to display values from the record.
+ The ivar number is selected by the subview's tag value and it's ".text" property if set to
+ the value returned record value "stringValue" for the ivar. Supports images stored as
+ NSData objects, UISwitches bound to boolean valuea and UITextField for alll other values.
+ */
+
++ (void)bindRecord:(id)record toView:(OOView *)view delegate:(id)delegate {
+#ifdef __IPHONE_OS_VERSION_MIN_REQUIRED
+	OOMetaData *metaData = [self metaDataForClass:[record class]];
+	OOValueDictionary values = [metaData encode:[record dictionaryWithValuesForKeys:metaData->ivars]];
+
+	for ( int i=0 ; i<metaData->ivars ; i++ ) {
+		UILabel *label = (UILabel *)[view viewWithTag:1+i];
+		id value = values[metaData->ivars[i]];
+
+        if ( [label isKindOfClass:[UIImageView class]] )
+			((UIImageView *)label).image = value != OONull ? [UIImage imageWithData:(NSData *)value] : nil;
+		else if ( [label isKindOfClass:[UISwitch class]] ) {
+			UISwitch *uiSwitch = (UISwitch *)label;
+			uiSwitch.on = value != OONull ? [value charValue] : 0;
+			if ( delegate )
+				[uiSwitch addTarget:delegate action:@selector(valueChanged:) forControlEvents:UIControlEventValueChanged];
+		}
+		else if ( [label isKindOfClass:[UIWebView class]] )
+			[(UIWebView *)label loadHTMLString:value != OONull ? value : @"" baseURL:nil];
+		else if ( label ) {
+			label.text = value != OONull ? [value stringValue] : @"";
+			if ( [label isKindOfClass:[UITextView class]] ) {
+				[(UITextView *)label setContentOffset:CGPointMake(0,0) animated:NO];
+				[(UITextView *)label scrollRangeToVisible:NSMakeRange(0,0)];
+			}
+		}
+
+		if ( [label respondsToSelector:@selector(delegate)] )
+			((UITextField *)label).delegate = delegate;
+		label.hidden = NO;
+
+		if ( (label = (UILabel *)[view viewWithTag:-1-i]) ) {
+			label.text = **metaData->ivars[i];
+			label.hidden = NO;
+		}
+	}
+
+	OOView *subView;
+	for ( int i=metaData->ivars ; (subView = [view viewWithTag:1+i]) ; i++ ) {
+		subView.hidden = YES;
+		if ( (subView = [view viewWithTag:-1-i]) )
+			subView.hidden =YES;
+	}
+#endif
+}
+
+/**
+ When the delegate method fires this method should be called to update
+ the record with the modified value before updating the database.
+ */
+
++ (void)updateRecord:(id)record fromView:(OOView *)view {
+#ifdef __IPHONE_OS_VERSION_MIN_REQUIRED
+	if ( view.tag > 0 && [view respondsToSelector:@selector(text)] ) {
+		OOMetaData *metaData = [self metaDataForClass:[record class]];
+		NSString *name = *metaData->ivars[view.tag-1];
+		OOString type = metaData->types[name];
+		id value = OO_RETAIN(((UITextField *)view).text );
+
+		if ( type[0] == '{' ) {
+#ifdef OO_ARC
+            ooArcRetain( value );
+#endif
+			value = [[NSValue alloc] initWithBytes:&value objCType:@encode(id)];
+#ifndef OO_ARC
+			OO_RELEASE( (id)[[record valueForKey:name] pointerValue] );
+#endif
+		}
+
+		[record setValue:value forKey:name];
+		OO_RELEASE( value );
+	}
+	for ( OOView *subview in [view subviews] )
+		[self updateRecord:record fromView:subview];
+#endif
+}
+
+@end
+
+@implementation OOView(OOExtras)
+
+- copyView {
+    NSData *archived = [NSKeyedArchiver archivedDataWithRootObject:self];
+    OOView *copy = [NSKeyedUnarchiver unarchiveObjectWithData:archived];
+#ifdef __IPHONE_OS_VERSION_MIN_REQUIRED
+    copy.frame = CGRectMake(0.0, 0.0, self.frame.size.width, self.frame.size.height);
+#else
+    copy.frame = NSMakeRect(0.0, 0.0, self.frame.size.width, self.frame.size.height);
+#endif
+    return copy;
+}
+
+@end
+
+@implementation NSData(OOExtras)
+
+static int unhex ( unsigned char ch ) {
+	return ch >= 'a' ? 10 + ch - 'a'  : ch >= 'A' ? 10 + ch - 'A' : ch - '0';
+}
+
+- initWithDescription:(NSString *)description {
+	NSInteger len = [description length]/2, lin = [description lengthOfBytesUsingEncoding:NSUTF8StringEncoding];
+	char *bytes = (char *)malloc( len ), *optr = bytes, *hex = (char *)malloc( lin+1 );
+	[description getCString:hex maxLength:lin+1 encoding:NSUTF8StringEncoding];
+
+	for ( char *iptr = hex ; *iptr ; iptr+=2 ) {
+		if ( *iptr == '<' || *iptr == ' ' || *iptr == '>' )
+			iptr--;
+		else
+			*optr++ = unhex( *iptr )*16 + unhex( *(iptr+1) );
+	}
+
+	free( hex );
+	return [self initWithBytesNoCopy:bytes length:optr-bytes freeWhenDone:YES];
+}
+
+- (NSString *)stringValue { return [self description]; }
+
+@end
+
+@interface NSString(OOExtras)
+@end
+@implementation NSString(OOExtras)
+- (char)charValue { return [self intValue]; }
+- (char)shortValue { return [self intValue]; }
+- (NSString *)stringValue { return self; }
+@end
+
+@interface NSArray(OOExtras)
+@end
+@implementation NSArray(OOExtras)
+- (NSString *)stringValue { 
+	static OOReplace reformat( "/(\\s)\\s+|^\\(|\\)$|\"/$1/" );
+	return &([self description] | reformat);
+}
+@end
+
+@interface NSDictionary(OOExtras)
+@end
+@implementation NSDictionary(OOExtras)
+- (NSString *)stringValue { 
+	static OOReplace reformat( "/(\\s)\\s+|^\\{|\\}$|\"/$1/" );
+	return &([self description] | reformat);
+}
+@end
+
+#ifdef __IPHONE_OS_VERSION_MIN_REQUIRED
+@interface UISwitch(OOExtras)
+@end
+@implementation UISwitch(OOExtras)
+- (NSString *)text { return self.on ? @"1" : @"0"; }
+@end
+#endif
+
diff --git a/samples/Ox/IJCEmet2009.oxh b/samples/Ox/IJCEmet2009.oxh
new file mode 100644
index 00000000..5dd045af
--- /dev/null
+++ b/samples/Ox/IJCEmet2009.oxh
@@ -0,0 +1,72 @@
+/** Replicate Imai, Jain and Ching Econometrica 2009 (incomplete).
+
+**/
+#include "IJCEmet2009.h"
+
+Kapital::Kapital(L,const N,const entrant,const exit,const KP){
+	StateVariable(L,N);
+	this.entrant = entrant;
+	this.exit = exit;
+	this.KP = KP;
+	actual = Kbar*vals/(N-1);
+	upper = log(actual~.Inf);
+	}
+
+Kapital::Transit(FeasA) {
+	decl ent =CV(entrant), stayout = FeasA[][exit.pos], tprob, sigu = CV(KP[SigU]);
+	if (!v && !ent) return { <0>, ones(stayout) };
+	tprob = ent ? probn( (upper-CV(KP[Kbe]))/sigu )
+	           : probn( (upper-(CV(KP[Kb0])+CV(KP[Kb2])*upper[v])) / sigu );
+	tprob = tprob[1:] - tprob[:N-1];
+	return { vals, tprob.*(1-stayout)+(1.0~zeros(1,N-1)).*stayout };
+	}
+
+FirmEntry::Run() {
+	Initialize();
+	GenerateSample();
+	BDP->BayesianDP();
+	}
+
+FirmEntry::Initialize() {
+	Rust::Initialize(Reachable,0);
+	sige = new StDeviations("sige",<0.3,0.3>,0);
+	entrant = new LaggedAction("entrant",d);
+	KP = new array[Kparams];
+		KP[Kbe] = new Positive("be",0.5);
+		KP[Kb0] = new Free("b0",0.0);
+		KP[Kb1] = new Determined("b1",0.0);
+		KP[Kb2] = new Positive("b2",0.4);
+		KP[SigU] = new Positive("sigu",0.4);
+	EndogenousStates(K = new Kapital("K",KN,entrant,d,KP),entrant);
+	SetDelta(new Probability("delta",0.85));
+	kcoef = new Positive("kcoef",0.1);
+	ecost = new Negative("ec",-0.4);
+	CreateSpaces();
+	}
+
+FirmEntry::GenerateSample() {
+	Volume = LOUD;
+	EM = new ValueIteration(0);
+//	EM -> Solve(0,0);
+	data = new DataSet(0,EM);
+	data->Simulate(DataN,DataT,0,FALSE);
+	data->Print("firmentry.xls");
+	BDP = new ImaiJainChing("FMH",data,EM,ecost,sige,kcoef,KP,delta);
+	}
+
+/** Capital stock can be positive only for incumbents.
+**/
+FirmEntry::Reachable()	{ return CV(entrant)*CV(K) ? 0 : new FirmEntry() ;	}
+
+/** The one period return.
+<DD>
+<pre>U = </pre>
+</DD>
+**/
+FirmEntry::Utility()  {
+	decl ent = CV(entrant),
+		 u =
+		     ent*CV(ecost)+(1-ent)*CV(kcoef)*AV(K)
+		   | 0.0;
+	return u;
+	}
diff --git a/samples/Ox/ParallelObjective.ox b/samples/Ox/ParallelObjective.ox
new file mode 100644
index 00000000..24463987
--- /dev/null
+++ b/samples/Ox/ParallelObjective.ox
@@ -0,0 +1,63 @@
+/** Client and Server classes for parallel optimization using CFMPI.**/
+#include "ParallelObjective.h"
+
+/** Set up MPI Client-Server support for objective optimization.
+@param obj `Objective' to parallelize
+@param DONOTUSECLIENT TRUE (default): client node does no object evaluation<br>FALSE after putting servers to work Client node does one evaluation.
+**/
+ParallelObjective(obj,DONOTUSECLIENT) {
+	if (isclass(obj.p2p)) {oxwarning("P2P object already exists for "+obj.L+". Nothing changed"); return;}
+	obj.p2p = new P2P(DONOTUSECLIENT,new ObjClient(obj),new ObjServer(obj));
+	}
+
+ObjClient::ObjClient(obj) { this.obj = obj;    }
+
+ObjClient::Execute() {    }
+
+ObjServer::ObjServer(obj) {
+    this.obj = obj;
+    basetag = P2P::STOP_TAG+1;
+    iml = obj.NvfuncTerms;
+    Nparams = obj.nstruct;
+    }
+
+/** Wait on the objective client.
+**/
+ObjServer::Loop(nxtmsgsz) {
+    Nparams = nxtmsgsz;   //free param length is no greater than Nparams
+    if (Volume>QUIET) println("ObjServer server ",ID," Nparams ",Nparams);
+    Server::Loop(Nparams);
+    Recv(ANY_TAG);                      //receive the ending parameter vector
+    obj->Encode(Buffer[:Nparams-1]);   //encode it.
+    }
+
+/** Do the objective evaluation.
+Receive structural parameter vector and `Objective::Encode`() it.
+Call `Objective::vfunc`().
+@return Nparams (max. length of next expected message);
+**/
+ObjServer::Execute() {
+	obj->Decode(Buffer[:obj.nfree-1]);
+	Buffer = obj.cur.V[] = obj->vfunc();
+    if (Volume>QUIET) println("Server Executive: ",ID," vfunc[0]= ",Buffer[0]);
+	return obj.nstruct;
+	}
+
+CstrServer::CstrServer(obj) { ObjServer(obj);	}
+
+SepServer::SepServer(obj) { ObjServer(obj);	}
+
+CstrServer::Execute() {
+	obj->Encode(Buffer);
+	obj->Lagrangian(0);
+	return rows(Buffer = obj.cur->Vec());
+	}
+
+/** Separable objective evaluations.
+**/
+SepServer::Execute() {
+	obj.Kvar.v = imod(Tag-basetag,obj.K);
+	obj->Encode(Buffer,TRUE);
+	Buffer = obj.Kvar->PDF() * obj->vfunc();
+	return obj.NvfuncTerms;
+	}
diff --git a/samples/Ox/particle.oxo b/samples/Ox/particle.oxo
new file mode 100644
index 00000000..0ce64fb7
--- /dev/null
+++ b/samples/Ox/particle.oxo
@@ -0,0 +1,38 @@
+nldge::ParticleLogLikeli()
+{	decl it, ip,
+		 mss, mbas, ms, my, mx, vw, vwi, dws,
+		 mhi, mhdet, loglikeli, mData,
+		 vxm, vxs, mxm=<>, mxsu=<>, mxsl=<>,
+		 time, timeall, timeran=0, timelik=0, timefun=0, timeint=0, timeres=0;
+
+	mData = GetData(m_asY);
+	mhdet = sqrt((2*M_PI)^m_cY * determinant(m_mMSbE.^2));		// covariance determinant
+	mhi   = invert(m_mMSbE.^2);					// invert covariance of measurement shocks
+
+	ms 	  = m_vSss + zeros(m_cPar, m_cS);			// start particles
+	mx 	  = m_vXss + zeros(m_cPar, m_cX);			// steady state of state and policy
+
+	loglikeli = 0;							// init likelihood
+																								//timeall=timer();
+	for(it = 0; it < sizer(mData); it++)
+	{
+		mss = rann(m_cPar, m_cSS) * m_mSSbE;			// state noise
+		fg(&ms, ms, mx, mss);					// transition prior as proposal
+		mx = m_oApprox.FastInterpolate(ms); 			// interpolate
+		fy(&my, ms, mx, zeros(m_cPar, m_cMS));			// evaluate importance weights
+		my -= mData[it][];					// observation error
+
+		vw = exp(-0.5 * outer(my,mhi,'d')' )/mhdet;		// vw = exp(-0.5 * sumr(my*mhi .*my ) )/mhdet;
+
+		vw = vw .== .NaN .? 0 .: vw;				// no policy can happen for extrem particles
+		dws = sumc(vw);
+		if(dws==0) return -.Inf;				// or extremely wrong parameters
+		loglikeli += log(dws/m_cPar)	;			// loglikelihood contribution
+																										//timelik += (timer()-time)/100;
+																										//time=timer();
+		vwi = resample(vw/dws)-1;				// selection step in c++
+		ms = ms[vwi][];						// on normalized weights
+		mx = mx[vwi][];
+																	}
+	return loglikeli;
+}
diff --git a/samples/Oxygene/Program.pas b/samples/Oxygene/Program.pas
deleted file mode 100644
index d5b45e8d..00000000
--- a/samples/Oxygene/Program.pas
+++ /dev/null
@@ -1,125 +0,0 @@
-namespace Loops;
-
-interface
-
-uses System.Linq;
-
-type
-  ConsoleApp = class
-  public
-    class method Main;
-    method loopsTesting;
-    method fillData : sequence of Country;
-  var 
-    Countries : sequence of Country;
-  end;
-
-type 
-  Country = public class
-  public
-    property Name : String;
-    property Capital : String;
-
-    constructor (setName : String; setCapital : String);
-  end;
-implementation
-
-class method ConsoleApp.Main;
-begin
-  Console.WriteLine('Loops example');
-  Console.WriteLine();
-
-  with myConsoleApp := new ConsoleApp() do
-     myConsoleApp.loopsTesting;
-end;
-
-method ConsoleApp.loopsTesting;
-begin
-  {---------------------------------}
-  {"for" loop, taking every 5th item}
-  for i : Int32 :=0 to 50 step 5 do 
-  begin
-    Console.Write(i); Console.Write(' ');
-  end;
-
-  Console.WriteLine(); Console.WriteLine();
-
-  {---------------------------------}
-  {"for" loop, going from high to low value}
-  for i : Int32 := 10 downto 1 do
-  begin
-    Console.Write(i); Console.Write(' ');
-  end;
-
-  Console.WriteLine(); Console.WriteLine();
-
-  Countries := fillData;
-  
-  {---------------------------------}
-  {loop with defined "index" variable, which will count from 0 through the number of elements looped}
-  Console.WriteLine('Countries: ');
-  for each c in Countries index num do 
-    Console.WriteLine(Convert.ToString(num + 1) + ') ' + c.Name);
-
-  Console.WriteLine();
-
-  Console.WriteLine('Cities: ');
-  var ind : Integer :=0;
-
-  {---------------------------------}
-  {simple "loop" construct that loops endlessly, until broken out of}
-  loop
-  begin
-    Console.WriteLine(Countries.ElementAt(ind).Capital);
-    Inc(ind);
-    if ind = Countries.Count then break;
-  end;
-
-  Console.WriteLine();
-
-  {---------------------------------}
-  {the type of 'c' is inferred automatically}
-  for each c in Countries do
-    Console.WriteLine(c.Capital + ' is the capital of ' + c.Name);
-
-  Console.WriteLine();
-
-  ind := 0;
-  Console.WriteLine('Cities: ');
-
-  {"repeat ... until" loop}
-  repeat 
-    Console.WriteLine(Countries.ElementAt(ind).Capital);
-    Inc(ind);
-  until ind = Countries.Count;
-
-  Console.WriteLine();
-
-  ind := 0;
-  Console.WriteLine('Countries: ');
-
-  {---------------------------------}
-  {"while ... do" loop}
-  while ind < Countries.Count do
-  begin
-    Console.WriteLine(Countries.ElementAt(ind).Name);
-    Inc(ind);
-  end;
-
-  Console.ReadLine();
-end;
-
-method ConsoleApp.fillData: sequence of Country;
-begin
-  result := [new Country('UK', 'London'), new Country('USA', 'Washington'), new Country('Germany', 'Berlin'), 
-             new Country('Ukraine', 'Kyiv'), new Country('Russia', 'Moscow'), new Country('France', 'Paris')];
-             
-end;
-
-constructor Country (setName :String; setCapital: String);
-begin
-  Name := setName;
-  Capital := setCapital;
-end;
-
-end.
\ No newline at end of file
diff --git a/samples/PAWN/grandlarc.pwn b/samples/PAWN/grandlarc.pwn
new file mode 100644
index 00000000..76e96c66
--- /dev/null
+++ b/samples/PAWN/grandlarc.pwn
@@ -0,0 +1,520 @@
+//----------------------------------------------------------
+//
+// GRAND LARCENY 1.0
+// A freeroam gamemode for SA-MP 0.3
+//
+//----------------------------------------------------------
+
+#include <a_samp>
+#include <core>
+#include <float>
+#include "../include/gl_common.inc"
+#include "../include/gl_spawns.inc"
+
+#pragma tabsize 0
+
+//----------------------------------------------------------
+
+#define COLOR_WHITE                 0xFFFFFFFF
+#define COLOR_NORMAL_PLAYER 0xFFBB7777
+
+#define CITY_LOS_SANTOS         0
+#define CITY_SAN_FIERRO         1
+#define CITY_LAS_VENTURAS         2
+
+new total_vehicles_from_files=0;
+
+// Class selection globals
+new gPlayerCitySelection[MAX_PLAYERS];
+new gPlayerHasCitySelected[MAX_PLAYERS];
+new gPlayerLastCitySelectionTick[MAX_PLAYERS];
+
+new Text:txtClassSelHelper;
+new Text:txtLosSantos;
+new Text:txtSanFierro;
+new Text:txtLasVenturas;
+
+new thisanimid=0;
+new lastanimid=0;
+
+//----------------------------------------------------------
+
+main()
+{
+        print("\n---------------------------------------");
+        print("Running Grand Larceny - by the SA-MP team\n");
+        print("---------------------------------------\n");
+}
+
+//----------------------------------------------------------
+
+public OnPlayerConnect(playerid)
+{
+        GameTextForPlayer(playerid,"~w~Grand Larceny",3000,4);
+          SendClientMessage(playerid,COLOR_WHITE,"Welcome to {88AA88}G{FFFFFF}rand {88AA88}L{FFFFFF}arceny");
+          
+          // class selection init vars
+          gPlayerCitySelection[playerid] = -1;
+        gPlayerHasCitySelected[playerid] = 0;
+        gPlayerLastCitySelectionTick[playerid] = GetTickCount();
+
+        //SetPlayerColor(playerid,COLOR_NORMAL_PLAYER);
+
+        //Kick(playerid);
+        
+        /*
+        Removes vending machines
+        RemoveBuildingForPlayer(playerid, 1302, 0.0, 0.0, 0.0, 6000.0);
+        RemoveBuildingForPlayer(playerid, 1209, 0.0, 0.0, 0.0, 6000.0);
+        RemoveBuildingForPlayer(playerid, 955, 0.0, 0.0, 0.0, 6000.0);
+        RemoveBuildingForPlayer(playerid, 1775, 0.0, 0.0, 0.0, 6000.0);
+        RemoveBuildingForPlayer(playerid, 1776, 0.0, 0.0, 0.0, 6000.0);
+        */
+        
+        /*
+        new ClientVersion[32];
+        GetPlayerVersion(playerid, ClientVersion, 32);
+        printf("Player %d reports client version: %s", playerid, ClientVersion);*/
+
+         return 1;
+}
+
+//----------------------------------------------------------
+
+public OnPlayerSpawn(playerid)
+{
+        if(IsPlayerNPC(playerid)) return 1;
+        
+        new randSpawn = 0;
+        
+        SetPlayerInterior(playerid,0);
+        TogglePlayerClock(playerid,0);
+         ResetPlayerMoney(playerid);
+        GivePlayerMoney(playerid, 30000);
+
+        if(CITY_LOS_SANTOS == gPlayerCitySelection[playerid]) {
+          randSpawn = random(sizeof(gRandomSpawns_LosSantos));
+          SetPlayerPos(playerid,
+                 gRandomSpawns_LosSantos[randSpawn][0],
+                 gRandomSpawns_LosSantos[randSpawn][1],
+                 gRandomSpawns_LosSantos[randSpawn][2]);
+                SetPlayerFacingAngle(playerid,gRandomSpawns_LosSantos[randSpawn][3]);
+        }
+        else if(CITY_SAN_FIERRO == gPlayerCitySelection[playerid]) {
+          randSpawn = random(sizeof(gRandomSpawns_SanFierro));
+          SetPlayerPos(playerid,
+                 gRandomSpawns_SanFierro[randSpawn][0],
+                 gRandomSpawns_SanFierro[randSpawn][1],
+                 gRandomSpawns_SanFierro[randSpawn][2]);
+                SetPlayerFacingAngle(playerid,gRandomSpawns_SanFierro[randSpawn][3]);
+        }
+        else if(CITY_LAS_VENTURAS == gPlayerCitySelection[playerid]) {
+          randSpawn = random(sizeof(gRandomSpawns_LasVenturas));
+          SetPlayerPos(playerid,
+                 gRandomSpawns_LasVenturas[randSpawn][0],
+                 gRandomSpawns_LasVenturas[randSpawn][1],
+                 gRandomSpawns_LasVenturas[randSpawn][2]);
+                SetPlayerFacingAngle(playerid,gRandomSpawns_LasVenturas[randSpawn][3]);
+        }
+
+        //SetPlayerColor(playerid,COLOR_NORMAL_PLAYER);
+        
+        SetPlayerSkillLevel(playerid,WEAPONSKILL_PISTOL,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_PISTOL_SILENCED,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_DESERT_EAGLE,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_SHOTGUN,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_SAWNOFF_SHOTGUN,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_SPAS12_SHOTGUN,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_MICRO_UZI,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_MP5,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_AK47,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_M4,200);
+    SetPlayerSkillLevel(playerid,WEAPONSKILL_SNIPERRIFLE,200);
+    
+    GivePlayerWeapon(playerid,WEAPON_COLT45,100);
+        //GivePlayerWeapon(playerid,WEAPON_MP5,100);
+        TogglePlayerClock(playerid, 0);
+
+        return 1;
+}
+
+//----------------------------------------------------------
+
+public OnPlayerDeath(playerid, killerid, reason)
+{
+    new playercash;
+    
+    // if they ever return to class selection make them city
+        // select again first
+        gPlayerHasCitySelected[playerid] = 0;
+    
+        if(killerid == INVALID_PLAYER_ID) {
+        ResetPlayerMoney(playerid);
+        } else {
+                playercash = GetPlayerMoney(playerid);
+                if(playercash > 0) {
+                        GivePlayerMoney(killerid, playercash);
+                        ResetPlayerMoney(playerid);
+                }
+        }
+           return 1;
+}
+
+//----------------------------------------------------------
+
+ClassSel_SetupCharSelection(playerid)
+{
+           if(gPlayerCitySelection[playerid] == CITY_LOS_SANTOS) {
+                SetPlayerInterior(playerid,11);
+                SetPlayerPos(playerid,508.7362,-87.4335,998.9609);
+                SetPlayerFacingAngle(playerid,0.0);
+            SetPlayerCameraPos(playerid,508.7362,-83.4335,998.9609);
+                SetPlayerCameraLookAt(playerid,508.7362,-87.4335,998.9609);
+        }
+        else if(gPlayerCitySelection[playerid] == CITY_SAN_FIERRO) {
+                SetPlayerInterior(playerid,3);
+                SetPlayerPos(playerid,-2673.8381,1399.7424,918.3516);
+                SetPlayerFacingAngle(playerid,181.0);
+            SetPlayerCameraPos(playerid,-2673.2776,1394.3859,918.3516);
+                SetPlayerCameraLookAt(playerid,-2673.8381,1399.7424,918.3516);
+        }
+        else if(gPlayerCitySelection[playerid] == CITY_LAS_VENTURAS) {
+                SetPlayerInterior(playerid,3);
+                SetPlayerPos(playerid,349.0453,193.2271,1014.1797);
+                SetPlayerFacingAngle(playerid,286.25);
+            SetPlayerCameraPos(playerid,352.9164,194.5702,1014.1875);
+                SetPlayerCameraLookAt(playerid,349.0453,193.2271,1014.1797);
+        }
+        
+}
+
+//----------------------------------------------------------
+// Used to init textdraws of city names
+
+ClassSel_InitCityNameText(Text:txtInit)
+{
+          TextDrawUseBox(txtInit, 0);
+        TextDrawLetterSize(txtInit,1.25,3.0);
+        TextDrawFont(txtInit, 0);
+        TextDrawSetShadow(txtInit,0);
+    TextDrawSetOutline(txtInit,1);
+    TextDrawColor(txtInit,0xEEEEEEFF);
+    TextDrawBackgroundColor(txtClassSelHelper,0x000000FF);
+}
+
+//----------------------------------------------------------
+
+ClassSel_InitTextDraws()
+{
+    // Init our observer helper text display
+        txtLosSantos = TextDrawCreate(10.0, 380.0, "Los Santos");
+        ClassSel_InitCityNameText(txtLosSantos);
+        txtSanFierro = TextDrawCreate(10.0, 380.0, "San Fierro");
+        ClassSel_InitCityNameText(txtSanFierro);
+        txtLasVenturas = TextDrawCreate(10.0, 380.0, "Las Venturas");
+        ClassSel_InitCityNameText(txtLasVenturas);
+
+    // Init our observer helper text display
+        txtClassSelHelper = TextDrawCreate(10.0, 415.0,
+         " Press ~b~~k~~GO_LEFT~ ~w~or ~b~~k~~GO_RIGHT~ ~w~to switch cities.~n~ Press ~r~~k~~PED_FIREWEAPON~ ~w~to select.");
+        TextDrawUseBox(txtClassSelHelper, 1);
+        TextDrawBoxColor(txtClassSelHelper,0x222222BB);
+        TextDrawLetterSize(txtClassSelHelper,0.3,1.0);
+        TextDrawTextSize(txtClassSelHelper,400.0,40.0);
+        TextDrawFont(txtClassSelHelper, 2);
+        TextDrawSetShadow(txtClassSelHelper,0);
+    TextDrawSetOutline(txtClassSelHelper,1);
+    TextDrawBackgroundColor(txtClassSelHelper,0x000000FF);
+    TextDrawColor(txtClassSelHelper,0xFFFFFFFF);
+}
+
+//----------------------------------------------------------
+
+ClassSel_SetupSelectedCity(playerid)
+{
+        if(gPlayerCitySelection[playerid] == -1) {
+                gPlayerCitySelection[playerid] = CITY_LOS_SANTOS;
+        }
+        
+        if(gPlayerCitySelection[playerid] == CITY_LOS_SANTOS) {
+                SetPlayerInterior(playerid,0);
+                   SetPlayerCameraPos(playerid,1630.6136,-2286.0298,110.0);
+                SetPlayerCameraLookAt(playerid,1887.6034,-1682.1442,47.6167);
+                
+                TextDrawShowForPlayer(playerid,txtLosSantos);
+                TextDrawHideForPlayer(playerid,txtSanFierro);
+                TextDrawHideForPlayer(playerid,txtLasVenturas);
+        }
+        else if(gPlayerCitySelection[playerid] == CITY_SAN_FIERRO) {
+                SetPlayerInterior(playerid,0);
+                   SetPlayerCameraPos(playerid,-1300.8754,68.0546,129.4823);
+                SetPlayerCameraLookAt(playerid,-1817.9412,769.3878,132.6589);
+                
+                TextDrawHideForPlayer(playerid,txtLosSantos);
+                TextDrawShowForPlayer(playerid,txtSanFierro);
+                TextDrawHideForPlayer(playerid,txtLasVenturas);
+        }
+        else if(gPlayerCitySelection[playerid] == CITY_LAS_VENTURAS) {
+                SetPlayerInterior(playerid,0);
+                   SetPlayerCameraPos(playerid,1310.6155,1675.9182,110.7390);
+                SetPlayerCameraLookAt(playerid,2285.2944,1919.3756,68.2275);
+                
+                TextDrawHideForPlayer(playerid,txtLosSantos);
+                TextDrawHideForPlayer(playerid,txtSanFierro);
+                TextDrawShowForPlayer(playerid,txtLasVenturas);
+        }
+}
+
+//----------------------------------------------------------
+
+ClassSel_SwitchToNextCity(playerid)
+{
+    gPlayerCitySelection[playerid]++;
+        if(gPlayerCitySelection[playerid] > CITY_LAS_VENTURAS) {
+         gPlayerCitySelection[playerid] = CITY_LOS_SANTOS;
+        }
+        PlayerPlaySound(playerid,1052,0.0,0.0,0.0);
+        gPlayerLastCitySelectionTick[playerid] = GetTickCount();
+        ClassSel_SetupSelectedCity(playerid);
+}
+
+//----------------------------------------------------------
+
+ClassSel_SwitchToPreviousCity(playerid)
+{
+    gPlayerCitySelection[playerid]--;
+        if(gPlayerCitySelection[playerid] < CITY_LOS_SANTOS) {
+         gPlayerCitySelection[playerid] = CITY_LAS_VENTURAS;
+        }
+        PlayerPlaySound(playerid,1053,0.0,0.0,0.0);
+        gPlayerLastCitySelectionTick[playerid] = GetTickCount();
+        ClassSel_SetupSelectedCity(playerid);
+}
+
+//----------------------------------------------------------
+
+ClassSel_HandleCitySelection(playerid)
+{
+        new Keys,ud,lr;
+    GetPlayerKeys(playerid,Keys,ud,lr);
+    
+    if(gPlayerCitySelection[playerid] == -1) {
+                ClassSel_SwitchToNextCity(playerid);
+                return;
+        }
+
+        // only allow new selection every ~500 ms
+        if( (GetTickCount() - gPlayerLastCitySelectionTick[playerid]) < 500 ) return;
+        
+        if(Keys & KEY_FIRE) {
+         gPlayerHasCitySelected[playerid] = 1;
+         TextDrawHideForPlayer(playerid,txtClassSelHelper);
+                TextDrawHideForPlayer(playerid,txtLosSantos);
+                TextDrawHideForPlayer(playerid,txtSanFierro);
+                TextDrawHideForPlayer(playerid,txtLasVenturas);
+         TogglePlayerSpectating(playerid,0);
+         return;
+        }
+        
+        if(lr > 0) {
+         ClassSel_SwitchToNextCity(playerid);
+        }
+        else if(lr < 0) {
+         ClassSel_SwitchToPreviousCity(playerid);
+        }
+}
+
+//----------------------------------------------------------
+
+public OnPlayerRequestClass(playerid, classid)
+{
+        if(IsPlayerNPC(playerid)) return 1;
+
+        if(gPlayerHasCitySelected[playerid]) {
+                ClassSel_SetupCharSelection(playerid);
+                return 1;
+        } else {
+                if(GetPlayerState(playerid) != PLAYER_STATE_SPECTATING) {
+                        TogglePlayerSpectating(playerid,1);
+                    TextDrawShowForPlayer(playerid, txtClassSelHelper);
+                    gPlayerCitySelection[playerid] = -1;
+                }
+          }
+    
+        return 0;
+}
+
+//----------------------------------------------------------
+
+public OnGameModeInit()
+{
+        SetGameModeText("Grand Larceny");
+        ShowPlayerMarkers(PLAYER_MARKERS_MODE_GLOBAL);
+        ShowNameTags(1);
+        SetNameTagDrawDistance(40.0);
+        EnableStuntBonusForAll(0);
+        DisableInteriorEnterExits();
+        SetWeather(2);
+        SetWorldTime(11);
+
+        //UsePlayerPedAnims();
+        //ManualVehicleEngineAndLights();
+        //LimitGlobalChatRadius(300.0);
+        
+        ClassSel_InitTextDraws();
+
+        // Player Class
+        AddPlayerClass(281,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(282,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(283,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(284,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(285,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(286,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(287,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(288,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(289,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(265,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(266,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(267,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(268,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(269,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(270,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(1,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(2,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(3,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(4,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(5,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(6,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(8,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(42,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(65,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        //AddPlayerClass(74,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(86,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(119,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+         AddPlayerClass(149,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(208,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(273,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(289,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        
+        AddPlayerClass(47,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(48,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(49,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(50,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(51,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(52,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(53,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(54,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(55,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(56,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(57,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(58,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+           AddPlayerClass(68,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(69,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(70,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(71,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(72,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(73,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(75,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(76,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(78,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(79,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(80,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(81,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(82,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(83,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(84,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(85,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(87,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(88,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(89,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(91,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(92,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(93,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(95,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(96,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(97,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(98,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+        AddPlayerClass(99,1759.0189,-1898.1260,13.5622,266.4503,-1,-1,-1,-1,-1,-1);
+
+        // SPECIAL
+        total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/trains.txt");
+        total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/pilots.txt");
+
+           // LAS VENTURAS
+     total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/lv_law.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/lv_airport.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/lv_gen.txt");
+    
+    // SAN FIERRO
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/sf_law.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/sf_airport.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/sf_gen.txt");
+    
+    // LOS SANTOS
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/ls_law.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/ls_airport.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/ls_gen_inner.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/ls_gen_outer.txt");
+    
+    // OTHER AREAS
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/whetstone.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/bone.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/flint.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/tierra.txt");
+    total_vehicles_from_files += LoadStaticVehiclesFromFile("vehicles/red_county.txt");
+
+    printf("Total vehicles from files: %d",total_vehicles_from_files);
+
+        return 1;
+}
+
+//----------------------------------------------------------
+
+public OnPlayerUpdate(playerid)
+{
+        if(!IsPlayerConnected(playerid)) return 0;
+        if(IsPlayerNPC(playerid)) return 1;
+
+        // changing cities by inputs
+        if( !gPlayerHasCitySelected[playerid] &&
+         GetPlayerState(playerid) == PLAYER_STATE_SPECTATING ) {
+         ClassSel_HandleCitySelection(playerid);
+         return 1;
+        }
+        
+        // No weapons in interiors
+        if(GetPlayerInterior(playerid) != 0 && GetPlayerWeapon(playerid) != 0) {
+         SetPlayerArmedWeapon(playerid,0); // fists
+         return 0; // no syncing until they change their weapon
+        }
+        
+        // Don't allow minigun
+        if(GetPlayerWeapon(playerid) == WEAPON_MINIGUN) {
+         Kick(playerid);
+         return 0;
+        }
+        
+        /* No jetpacks allowed
+        if(GetPlayerSpecialAction(playerid) == SPECIAL_ACTION_USEJETPACK) {
+         Kick(playerid);
+         return 0;
+        }*/
+
+        /* For testing animations
+    new msg[128+1];
+        new animlib[32+1];
+        new animname[32+1];
+
+        thisanimid = GetPlayerAnimationIndex(playerid);
+        if(lastanimid != thisanimid)
+        {
+                GetAnimationName(thisanimid,animlib,32,animname,32);
+                format(msg, 128, "anim(%d,%d): %s %s", lastanimid, thisanimid, animlib, animname);
+                lastanimid = thisanimid;
+                SendClientMessage(playerid, 0xFFFFFFFF, msg);
+        }*/
+
+        return 1;
+}
+
+//----------------------------------------------------------
\ No newline at end of file
diff --git a/samples/Pan/test.pan b/samples/Pan/test.pan
new file mode 100644
index 00000000..56c8bd62
--- /dev/null
+++ b/samples/Pan/test.pan
@@ -0,0 +1,54 @@
+object template pantest;
+
+# Very simple pan test file
+"/long/decimal" = 123;
+"/long/octal" = 0755;
+"/long/hexadecimal" = 0xFF;
+
+"/double/simple" = 0.01;
+"/double/pi" = 3.14159;
+"/double/exponent" = 1e-8;
+"/double/scientific" = 1.3E10;
+
+"/string/single" = 'Faster, but escapes like \t, \n and \x3d don''t work, but '' should work.';
+"/string/double" = "Slower, but escapes like \t, \n and \x3d do work";
+
+variable TEST = 2;
+
+"/x2" = to_string(TEST);
+"/x2" ?= 'Default value';
+
+"/x3" = 1 + 2 + value("/long/decimal");
+
+"/x4" = undef;
+
+"/x5" = null;
+
+variable e ?= error("Test error message");
+
+# include gmond config for services-monitoring
+include { 'site/ganglia/gmond/services-monitoring' };
+
+"/software/packages"=pkg_repl("httpd","2.2.3-43.sl5.3",PKG_ARCH_DEFAULT);
+"/software/packages"=pkg_repl("php");
+
+# Example function
+function show_things_view_for_stuff = {
+    thing = ARGV[0];
+    foreach( i; mything; STUFF ) {
+        if ( thing == mything ) {
+            return( true );
+        } else {
+            return SELF;
+        };
+    };
+    false;
+};
+
+variable HERE = <<EOF;
+; This example demonstrates an in-line heredoc style config file
+[main]
+awesome = true
+EOF
+
+variable small = false;#This should be highlighted normally again.
diff --git a/samples/Perl/PSGI.pod b/samples/Perl/PSGI.pod
new file mode 100644
index 00000000..a05e0023
--- /dev/null
+++ b/samples/Perl/PSGI.pod
@@ -0,0 +1,111 @@
+=pod
+
+=head1 NAME
+
+Catalyst::PSGI - How Catalyst and PSGI work together
+
+=head1 SYNOPSIS
+
+The L<PSGI> specification defines an interface between web servers and
+Perl-based web applications and frameworks. It supports the writing of
+portable applications that can be run using various methods (as a
+standalone server, or using mod_perl, FastCGI, etc.). L<Plack> is an
+implementation of the PSGI specification for running Perl applications.
+
+Catalyst used to contain an entire set of C<< Catalyst::Engine::XXXX >>
+classes to handle various web servers and environments (e.g. CGI,
+FastCGI, mod_perl) etc.
+
+This has been changed in Catalyst 5.9 so that all of that work is done
+by Catalyst implementing the L<PSGI> specification, using L<Plack>'s
+adaptors to implement that functionality.
+
+This means that we can share common code, and share fixes for specific
+web servers.
+
+=head1 I already have an application
+
+If you already have a Catalyst application, then you should be able to
+upgrade to the latest release with little or no trouble (see the notes
+in L<Catalyst::Upgrading> for specifics about your web server
+deployment).
+
+=head1 Writing your own PSGI file.
+
+=head2 What is a .psgi file?
+
+A C<< .psgi >> file lets you control how your application code reference
+is built. Catalyst will automatically handle this for you, but it's
+possible to do it manually by creating a C<myapp.psgi> file in the root
+of your application.
+
+=head2 Why would I want to write my own .psgi file?
+
+Writing your own .psgi file allows you to use the alternate L<plackup> command
+to start your application, and allows you to add classes and extensions
+that implement L<Plack::Middleware>, such as L<Plack::Middleware::ErrorDocument>
+or L<Plack::Middleware::AccessLog>.
+
+The simplest C<.psgi> file for an application called C<TestApp> would be:
+
+    use strict;
+    use warnings;
+    use TestApp;
+
+    my $app = TestApp->psgi_app(@_);
+
+Note that Catalyst will apply a number of middleware components for you
+automatically, and these B<will not> be applied if you manually create a
+psgi file yourself. Details of these components can be found below.
+
+Additional information about psgi files can be found at:
+L<http://search.cpan.org/dist/Plack/lib/Plack.pm#.psgi_files>
+
+=head2 What is in the .psgi file Catalyst generates by default?
+
+Catalyst generates an application which, if the C<using_frontend_proxy>
+setting is on, is wrapped in L<Plack::Middleware::ReverseProxy>, and
+contains some engine-specific fixes for uniform behaviour, as contained
+in:
+
+=over
+
+=item L<Plack::Middleware::LighttpdScriptNameFix>
+
+=item L<Plack::Middleware::IIS6ScriptNameFix>
+
+=back
+
+If you override the default by providing your own C<< .psgi >> file,
+then none of these things will be done automatically for you by the PSGI
+application returned when you call C<< MyApp->psgi_app >>. Thus, if you
+need any of this functionality, you'll need to implement this in your
+C<< .psgi >> file yourself.
+
+An apply_default_middlewares method is supplied to wrap your application
+in the default middlewares if you want this behaviour and you are providing
+your own .psgi file.
+
+This means that the auto-generated (no .psgi file) code looks something
+like this:
+
+    use strict;
+    use warnings;
+    use TestApp;
+
+    my $app = TestApp->apply_default_middlewares(TestApp->psgi_app(@_));
+
+=head1 SEE ALSO
+
+L<Catalyst::Upgrading>, L<Plack>, L<PSGI::FAQ>, L<PSGI>.
+
+=head1 AUTHORS
+
+Catalyst Contributors, see Catalyst.pm
+
+=head1 COPYRIGHT
+
+This library is free software. You can redistribute it and/or modify
+it under the same terms as Perl itself.
+
+=cut
diff --git a/samples/Perl6/RoleQ.pm6 b/samples/Perl6/RoleQ.pm6
new file mode 100644
index 00000000..9b66bde4
--- /dev/null
+++ b/samples/Perl6/RoleQ.pm6
@@ -0,0 +1,23 @@
+role q {
+    token stopper { \' }
+
+    token escape:sym<\\> { <sym> <item=.backslash> }
+
+    token backslash:sym<qq> { <?before 'q'> <quote=.LANG('MAIN','quote')> }
+    token backslash:sym<\\> { <text=.sym> }
+    token backslash:sym<stopper> { <text=.stopper> }
+
+    token backslash:sym<miscq> { {} . }
+
+    method tweak_q($v) { self.panic("Too late for :q") }
+    method tweak_qq($v) { self.panic("Too late for :qq") }
+}
+
+role qq does b1 does c1 does s1 does a1 does h1 does f1 {
+    token stopper { \" }
+    token backslash:sym<unrec> { {} (\w) { self.throw_unrecog_backslash_seq: $/[0].Str } }
+    token backslash:sym<misc> { \W }
+
+    method tweak_q($v) { self.panic("Too late for :q") }
+    method tweak_qq($v) { self.panic("Too late for :qq") }
+}
diff --git a/samples/Perl6/grammar-test.p6 b/samples/Perl6/grammar-test.p6
new file mode 100644
index 00000000..28107f3e
--- /dev/null
+++ b/samples/Perl6/grammar-test.p6
@@ -0,0 +1,22 @@
+token pod_formatting_code {
+    $<code>=<[A..Z]>
+    '<' { $*POD_IN_FORMATTINGCODE := 1 }
+    $<content>=[ <!before '>'> <pod_string_character> ]+
+    '>' { $*POD_IN_FORMATTINGCODE := 0 }
+}
+
+token pod_string {
+    <pod_string_character>+
+}
+
+token something:sym«<» {
+    <!>
+}
+
+token name {
+    <!>
+}
+
+token comment:sym<#> {
+   '#' {} \N*
+}
diff --git a/samples/Perl6/test.p6 b/samples/Perl6/test.p6
new file mode 100644
index 00000000..3d12b56c
--- /dev/null
+++ b/samples/Perl6/test.p6
@@ -0,0 +1,252 @@
+#!/usr/bin/env perl6
+
+use v6;
+
+my $string = 'I look like a # comment!';
+
+if $string eq 'foo' {
+    say 'hello';
+}
+
+regex http-verb {
+      'GET'
+    | 'POST'
+    | 'PUT'
+    | 'DELETE'
+    | 'TRACE'
+    | 'OPTIONS'
+    | 'HEAD'
+}
+
+# a sample comment
+
+say 'Hello from Perl 6!'
+
+
+#`{
+multi-line comment!
+}
+
+say 'here';
+
+#`(
+multi-line comment!
+)
+
+say 'here';
+
+#`{{{
+I'm a special comment!
+}}}
+
+say 'there';
+
+#`{{
+I'm { even } specialer!
+}}
+
+say 'there';
+
+#`{{
+does {{nesting}} work?
+}}
+
+#`«<
+trying mixed delimiters
+»
+
+my $string = qq<Hooray, arbitrary delimiter!>;
+my $string = qq«Hooray, arbitrary delimiter!»;
+my $string = q <now with whitespace!>;
+my $string = qq<<more strings>>;
+
+my %hash := Hash.new;
+
+=begin pod
+
+Here's some POD!  Wooo
+
+=end pod
+
+=for Testing
+    This is POD (see? role isn't highlighted)
+
+say('this is not!');
+
+=table
+    Of role things
+
+say('not in your table');
+#= A single line declarator "block" (with a keyword like role)
+#| Another single line declarator "block" (with a keyword like role)
+#={
+    A declarator block (with a keyword like role)
+  }
+#|{
+    Another declarator block (with a keyword like role)
+  }
+#= { A single line declarator "block" with a brace (with a keyword like role)
+#=«
+    More declarator blocks! (with a keyword like role)
+  »
+#|«
+    More declarator blocks! (with a keyword like role)
+  »
+
+say 'Moar code!';
+
+my $don't = 16;
+
+sub don't($x) {
+    !$x
+}
+
+say don't 'foo';
+
+my %hash = (
+    :foo(1),
+);
+
+say %hash<foo>;
+say %hash<<foo>>;
+say %hash«foo»;
+
+say %*hash<foo>;
+say %*hash<<foo>>;
+say %*hash«foo»;
+
+say $<todo>;
+say $<todo>;
+
+for (@A Z @B) -> $a, $b {
+    say $a + $b;
+}
+
+Q:PIR {
+    .loadlib "somelib"
+}
+
+my $longstring = q/
+    lots
+    of
+    text
+/;
+
+my $heredoc = q:to/END_SQL/;
+SELECT * FROM Users
+WHERE first_name = 'Rob'
+END_SQL
+my $hello;
+
+# Fun with regexen
+
+if 'food' ~~ /foo/ {
+    say 'match!'
+}
+
+my $re  = /foo/;
+my $re2 = m/ foo /;
+my $re3 = m:i/ FOO /;
+
+call-a-sub(/ foo /);
+call-a-sub(/ foo \/ bar /);
+
+my $re4    = rx/something | something-else/;
+my $result = ms/regexy stuff/;
+my $sub0   = s/regexy stuff/more stuff/;
+my $sub    = ss/regexy stuff/more stuff/;
+my $trans  = tr/regexy stuff/more stuff/;
+
+my @values = <a b c d>;
+call-sub(<a b c d>);
+call-sub <a b c d>;
+
+my $result = $a < $b;
+
+for <a b c d> -> $letter {
+    say $letter;
+}
+
+sub test-sub {
+    say @_;
+    say $!;
+    say $/;
+    say $0;
+    say $1;
+    say @*ARGS;
+    say $*ARGFILES;
+    say &?BLOCK;
+    say ::?CLASS;
+    say $?CLASS;
+    say @=COMMENT;
+    say %?CONFIG;
+    say $*CWD;
+    say $=data;
+    say %?DEEPMAGIC;
+    say $?DISTRO;
+    say $*DISTRO;
+    say $*EGID;
+    say %*ENV;
+    say $*ERR;
+    say $*EUID;
+    say $*EXECUTABLE_NAME;
+    say $?FILE;
+    say $?GRAMMAR;
+    say $*GID;
+    say $*IN;
+    say @*INC;
+    say %?LANG;
+    say $*LANG;
+    say $?LINE;
+    say %*META-ARGS;
+    say $?MODULE;
+    say %*OPTS;
+    say %*OPT;
+    say $?KERNEL;
+    say $*KERNEL;
+    say $*OUT;
+    say $?PACKAGE;
+    say $?PERL;
+    say $*PERL;
+    say $*PID;
+    say %=pod;
+    say $*PROGRAM_NAME;
+    say %*PROTOCOLS;
+    say ::?ROLE;
+    say $?ROLE;
+    say &?ROUTINE;
+    say $?SCOPE;
+    say $*TZ;
+    say $*UID;
+    say $?USAGE;
+    say $?VM;
+    say $?XVM;
+}
+
+say <a b c>;
+
+my $perl5_re = m:P5/ fo{2} /;
+my $re5      = rx«something | something-else»;
+
+my $M := %*COMPILING<%?OPTIONS><M>;
+
+say $M;
+
+sub regex-name { ... }
+my $pair = role-name => 'foo';
+$pair = rolesque => 'foo';
+
+my sub something(Str:D $value) { ... }
+
+my $s = q«<
+some
+string
+stuff
+»;
+
+my $regex = m«< some chars »;
+# after
+
+say $/<foo><bar>;
+
+roleq;
diff --git a/samples/Pike/Error.pmod b/samples/Pike/Error.pmod
new file mode 100644
index 00000000..808ecb0e
--- /dev/null
+++ b/samples/Pike/Error.pmod
@@ -0,0 +1,38 @@
+#pike __REAL_VERSION__
+
+constant Generic = __builtin.GenericError;
+
+constant Index = __builtin.IndexError;
+
+constant BadArgument = __builtin.BadArgumentError;
+
+constant Math = __builtin.MathError;
+
+constant Resource = __builtin.ResourceError;
+
+constant Permission = __builtin.PermissionError;
+
+constant Decode = __builtin.DecodeError;
+
+constant Cpp = __builtin.CppError;
+
+constant Compilation = __builtin.CompilationError;
+
+constant MasterLoad = __builtin.MasterLoadError;
+
+constant ModuleLoad = __builtin.ModuleLoadError;
+
+//! Returns an Error object for any argument it receives. If the
+//! argument already is an Error object or is empty, it does nothing.
+object mkerror(mixed error)
+{
+  if (error == UNDEFINED)
+    return error;
+  if (objectp(error) && error->is_generic_error)
+    return error;
+  if (arrayp(error))
+    return Error.Generic(@error);
+  if (stringp(error))
+    return Error.Generic(error);
+  return Error.Generic(sprintf("%O", error));
+}
\ No newline at end of file
diff --git a/samples/Pike/FakeFile.pike b/samples/Pike/FakeFile.pike
new file mode 100644
index 00000000..48f3ea64
--- /dev/null
+++ b/samples/Pike/FakeFile.pike
@@ -0,0 +1,360 @@
+#pike __REAL_VERSION__
+
+//! A string wrapper that pretends to be a @[Stdio.File] object
+//! in addition to some features of a @[Stdio.FILE] object.
+
+
+//! This constant can be used to distinguish a FakeFile object
+//! from a real @[Stdio.File] object.
+constant is_fake_file = 1;
+
+protected string data;
+protected int ptr;
+protected int(0..1) r;
+protected int(0..1) w;
+protected int mtime;
+
+protected function read_cb;
+protected function read_oob_cb;
+protected function write_cb;
+protected function write_oob_cb;
+protected function close_cb;
+
+//! @seealso
+//!   @[Stdio.File()->close()]
+int close(void|string direction) {
+  direction = lower_case(direction||"rw");
+  int cr = has_value(direction, "r");
+  int cw = has_value(direction, "w");
+
+  if(cr) {
+    r = 0;
+  }
+
+  if(cw) {
+    w = 0;
+  }
+
+  // FIXME: Close callback
+  return 1;
+}
+
+//! @decl void create(string data, void|string type, void|int pointer)
+//! @seealso
+//!   @[Stdio.File()->create()]
+void create(string _data, void|string type, int|void _ptr) {
+  if(!_data) error("No data string given to FakeFile.\n");
+  data = _data;
+  ptr = _ptr;
+  mtime = time();
+  if(type) {
+    type = lower_case(type);
+    if(has_value(type, "r"))
+      r = 1;
+    if(has_value(type, "w"))
+      w = 1;
+  }
+  else
+    r = w = 1;
+}
+
+protected string make_type_str() {
+  string type = "";
+  if(r) type += "r";
+  if(w) type += "w";
+  return type;
+}
+
+//! @seealso
+//!   @[Stdio.File()->dup()]
+this_program dup() {
+  return this_program(data, make_type_str(), ptr);
+}
+
+//! Always returns 0.
+//! @seealso
+//!   @[Stdio.File()->errno()]
+int errno() { return 0; }
+
+//! Returns size and the creation time of the string.
+Stdio.Stat stat() {
+  Stdio.Stat st = Stdio.Stat();
+  st->size = sizeof(data);
+  st->mtime=st->ctime=mtime;
+  st->atime=time();
+  return st;
+}
+
+//! @seealso
+//!   @[Stdio.File()->line_iterator()]
+String.SplitIterator line_iterator(int|void trim) {
+  if(trim)
+    return String.SplitIterator( data-"\r", '\n' );
+  return String.SplitIterator( data, '\n' );
+}
+
+protected mixed id;
+
+//! @seealso
+//!   @[Stdio.File()->query_id()]
+mixed query_id() { return id; }
+
+//! @seealso
+//!   @[Stdio.File()->set_id()]
+void set_id(mixed _id) { id = _id; }
+
+//! @seealso
+//!   @[Stdio.File()->read_function()]
+function(:string) read_function(int nbytes) {
+  return lambda() { return read(nbytes); };
+}
+
+//! @seealso
+//!   @[Stdio.File()->peek()]
+int(-1..1) peek(int|float|void timeout) {
+  if(!r) return -1;
+  if(ptr >= sizeof(data)) return 0;
+  return 1;
+}
+
+//! Always returns 0.
+//! @seealso
+//!   @[Stdio.File()->query_address()]
+string query_address(void|int(0..1) is_local) { return 0; }
+
+//! @seealso
+//!   @[Stdio.File()->read()]
+string read(void|int(0..) len, void|int(0..1) not_all) {
+  if(!r) return 0;
+  if (len < 0) error("Cannot read negative number of characters.\n");
+  int start=ptr;
+  ptr += len;
+  if(zero_type(len) || ptr>sizeof(data))
+    ptr = sizeof(data);
+
+  // FIXME: read callback
+  return data[start..ptr-1];
+}
+
+//! @seealso
+//!   @[Stdio.FILE()->gets()]
+string gets() {
+  if(!r) return 0;
+  string ret;
+  sscanf(data,"%*"+(string)ptr+"s%[^\n]",ret);
+  if(ret)
+  {
+    ptr+=sizeof(ret)+1;
+    if(ptr>sizeof(data))
+    {
+      ptr=sizeof(data);
+      if(!sizeof(ret))
+	ret = 0;
+    }
+  }
+
+  // FIXME: read callback
+  return ret;
+}
+
+//! @seealso
+//!   @[Stdio.FILE()->getchar()]
+int getchar() {
+  if(!r) return 0;
+  int c;
+  if(catch(c=data[ptr]))
+    c=-1;
+  else
+    ptr++;
+
+  // FIXME: read callback
+  return c;
+}
+
+//! @seealso
+//!   @[Stdio.FILE()->unread()]
+void unread(string s) {
+  if(!r) return;
+  if(data[ptr-sizeof(s)..ptr-1]==s)
+    ptr-=sizeof(s);
+  else
+  {
+    data=s+data[ptr..];
+    ptr=0;
+  }
+}
+
+//! @seealso
+//!   @[Stdio.File()->seek()]
+int seek(int pos, void|int mult, void|int add) {
+  if(mult)
+    pos = pos*mult+add;
+  if(pos<0)
+  {
+    pos = sizeof(data)+pos;
+    if( pos < 0 )
+	pos = 0;
+  }
+  ptr = pos;
+  if( ptr > strlen( data ) )
+      ptr = strlen(data);
+  return ptr;
+}
+
+//! Always returns 1.
+//! @seealso
+//!   @[Stdio.File()->sync()]
+int(1..1) sync() { return 1; }
+
+//! @seealso
+//!   @[Stdio.File()->tell()]
+int tell() { return ptr; }
+
+//! @seealso
+//!   @[Stdio.File()->truncate()]
+int(0..1) truncate(int length) {
+  data = data[..length-1];
+  return sizeof(data)==length;
+}
+
+//! @seealso
+//!   @[Stdio.File()->write()]
+int(-1..) write(string|array(string) str, mixed ... extra) {
+  if(!w) return -1;
+  if(arrayp(str)) str=str*"";
+  if(sizeof(extra)) str=sprintf(str, @extra);
+
+  if(ptr==sizeof(data)) {
+    data += str;
+    ptr = sizeof(data);
+  }
+  else if(sizeof(str)==1)
+    data[ptr++] = str[0];
+  else {
+    data = data[..ptr-1] + str + data[ptr+sizeof(str)..];
+    ptr += sizeof(str);
+  }
+
+  // FIXME: write callback
+  return sizeof(str);
+}
+
+//! @seealso
+//!   @[Stdio.File()->set_blocking]
+void set_blocking() {
+  close_cb = 0;
+  read_cb = 0;
+  read_oob_cb = 0;
+  write_cb = 0;
+  write_oob_cb = 0;
+}
+
+//! @seealso
+//!   @[Stdio.File()->set_blocking_keep_callbacks]
+void set_blocking_keep_callbacks() { }
+
+//! @seealso
+//!   @[Stdio.File()->set_blocking]
+void set_nonblocking(function rcb, function wcb, function ccb,
+		     function rocb, function wocb) {
+  read_cb = rcb;
+  write_cb = wcb;
+  close_cb = ccb;
+  read_oob_cb = rocb;
+  write_oob_cb = wocb;
+}
+
+//! @seealso
+//!   @[Stdio.File()->set_blocking_keep_callbacks]
+void set_nonblocking_keep_callbacks() { }
+
+
+//! @seealso
+//!   @[Stdio.File()->set_close_callback]
+void set_close_callback(function cb) { close_cb = cb; }
+
+//! @seealso
+//!   @[Stdio.File()->set_read_callback]
+void set_read_callback(function cb) { read_cb = cb; }
+
+//! @seealso
+//!   @[Stdio.File()->set_read_oob_callback]
+void set_read_oob_callback(function cb) { read_oob_cb = cb; }
+
+//! @seealso
+//!   @[Stdio.File()->set_write_callback]
+void set_write_callback(function cb) { write_cb = cb; }
+
+//! @seealso
+//!   @[Stdio.File()->set_write_oob_callback]
+void set_write_oob_callback(function cb) { write_oob_cb = cb; }
+
+
+//! @seealso
+//!   @[Stdio.File()->query_close_callback]
+function query_close_callback() { return close_cb; }
+
+//! @seealso
+//!   @[Stdio.File()->query_read_callback]
+function query_read_callback() { return read_cb; }
+
+//! @seealso
+//!   @[Stdio.File()->query_read_oob_callback]
+function query_read_oob_callback() { return read_oob_cb; }
+
+//! @seealso
+//!   @[Stdio.File()->query_write_callback]
+function query_write_callback() { return write_cb; }
+
+//! @seealso
+//!   @[Stdio.File()->query_write_oob_callback]
+function query_write_oob_callback() { return write_oob_cb; }
+
+string _sprintf(int t) {
+  return t=='O' && sprintf("%O(%d,%O)", this_program, sizeof(data),
+			   make_type_str());
+}
+
+
+// FakeFile specials.
+
+//! A FakeFile can be casted to a string.
+mixed cast(string to) {
+  switch(to) {
+  case "string": return data;
+  case "object": return this;
+  }
+  error("Can not cast object to %O.\n", to);
+}
+
+//! Sizeof on a FakeFile returns the size of its contents.
+int(0..) _sizeof() {
+  return sizeof(data);
+}
+
+//! @ignore
+
+#define NOPE(X) mixed X (mixed ... args) { error("This is a FakeFile. %s is not available.\n", #X); }
+NOPE(assign);
+NOPE(async_connect);
+NOPE(connect);
+NOPE(connect_unix);
+NOPE(open);
+NOPE(open_socket);
+NOPE(pipe);
+NOPE(tcgetattr);
+NOPE(tcsetattr);
+
+// Stdio.Fd
+NOPE(dup2);
+NOPE(lock); // We could implement this
+NOPE(mode); // We could implement this
+NOPE(proxy); // We could implement this
+NOPE(query_fd);
+NOPE(read_oob);
+NOPE(set_close_on_exec);
+NOPE(set_keepalive);
+NOPE(trylock); // We could implement this
+NOPE(write_oob);
+
+//! @endignore
\ No newline at end of file
diff --git a/samples/Pod/contents.pod b/samples/Pod/contents.pod
new file mode 100644
index 00000000..a5ec66f2
--- /dev/null
+++ b/samples/Pod/contents.pod
@@ -0,0 +1,159 @@
+$Id: contents.pod,v 1.3 2003/05/04 04:05:14 tower Exp $
+
+=begin html
+
+<style = "text/css">
+code { font-family: sans-serif; font-weight:bold; }
+</style>
+
+=end html
+
+=head1 Net::Z3950::AsyncZ
+
+=head2 Intro
+
+Net::Z3950::AsyncZ adds an additional layer of asynchronous support for the Z3950 module through the use
+of multiple forked processes. I hope that users will also find that it provides a convenient
+front end to C<Net::Z3950>.  My initial idea was to write something that
+would provide a convenient means of processing and formatting Z39.50 records--which I
+did, using the C<Z3950> synchronous code.  But I also wanted something that could
+handle queries to large numbers of servers at one session. Working on this part of my
+project, I found that I had trouble with the C<Z3950> asynchronous features
+and so ended up with what I have here.
+
+=begin html
+
+I give a more detailed account in the <A href="AsyncZ.html#apologia"><B>DESCRIPTION</b></a>
+section of <code>AsyncZ.html</code>.
+
+=end html
+
+=pod
+
+I give a more detailed account in in the B<DESCRIPTION> section of C<AsyncZ.pod>.
+
+=cut
+
+=head2 Documentation
+
+=pod
+
+=over 4
+
+=item AsyncZ.pod
+
+This is the starting point--it gives an overview of the AsyncZ module,
+describes the basic mechanics of its asynchronous workings, and details
+the particulars of the objects and methods.  But see
+L</"Examples.pod> for detailed explanations of the sample
+scripts which come with the C<Net::Z3950::AsyncZ> distribution.
+
+=item Options.pod
+
+This document details the various options that can be set to modify
+the behavior of AsyncZ Index
+
+=item Report.pod
+
+Report.pod deals with how records are treated line by line
+and how you can affect the apearance of a record's line by line output
+
+=item Examples.pod
+
+This document goes through the sample scripts that come with the
+C<Net::Z3950::AsyncZ> distribution and annotates them
+in a line-by-line fashion.  It's a basic HOW-TO.
+
+=back
+
+=cut
+
+=begin html
+
+<UL>
+<LI>
+ <A href="AsyncZ.html">AsyncZ.html</a>
+    	<br>This is the starting point--it gives an overview of the AsyncZ module,
+describes the basic mechanics of its asynchronous workings, and details
+the particulars of the objects and methods.  But see
+<a href="#examples">Examples</a> for detailed explanations of the sample
+scripts which come with the <code>Net::Z3950::AsyncZ</code> distribution.
+
+<LI>
+ <A href="Options.html">Options.html</a>
+	<br> This document details the various options that can be set to modify
+the behavior of <code>AsyncZ</code>
+
+<LI>
+ <A href="Report.html">Report.html</a>
+        <br><Code>Report.html</code> deals with how records are treated line by line
+and how you can affect the apearance of a record's line by line output
+
+<LI><A name = "examples"></a>
+ <A href="Examples.html">Examples.html</a>
+This document goes through the sample scripts that come with the
+<code>Net::Z3950::AsyncZ</code> distribution and annotates them
+in a line-by-line fashion.  It's a basic HOW-TO.
+
+</UL>
+
+=end html
+
+=head2 The Modules
+
+=pod
+
+There are more modules than there is documentation. The reason for this
+is that the only module you have full and complete access to is
+C<Net::Z3950::AsyncZ>.  The other modules are either internal to C<Net::AsyncZ>
+or accessed indirectly or in part indirectly.
+
+=cut
+
+=for html
+There are more modules than there is documentation. The reason for this
+is that the only module you have full and complete access to is
+<code>Net::Z3950::AsyncZ</code>.  The other modules are either internal to <code>Net::AsyncZ</code>
+or accessed indirectly or in part indirectly.
+
+=head3  Here are the modules:
+
+=over 4
+
+=item Net::Z3950::AsyncZ
+
+The main module: direct access --documented in
+C<AsyncZ> and C<Options> documentation
+
+=item Net::Z3950::AsyncZ::ErrMsg
+
+User error message handling: indirect access  -- documented in
+C<AsyncZ> documentation
+
+=item Net::Z3950::AsyncZ::Errors
+
+Error handling for debugging: limited access -- documented in
+C<AsyncZ> documentation
+
+=item Net::Z3950::AsyncZ::Report
+
+Module reponsible for fetching and formatting records: limited access -- documented
+
+=item Net::Z3950::AsyncZ::ZLoop
+
+Event loop for child processes: no access -- not documented
+
+=item Net::Z3950::AsyncZ::ZSend
+
+Connection details for child processes: no access -- not documented
+
+=item Net::Z3950::AsyncZ::Options::_params
+
+Options for child processes: direct and indirect access -- documented
+in C<Options> and C<AsyncZ> documentation
+
+=back
+
+=head1 INDEX
+
+
diff --git a/samples/PostScript/sierpinski.ps b/samples/PostScript/sierpinski.ps
new file mode 100644
index 00000000..e3c9f665
--- /dev/null
+++ b/samples/PostScript/sierpinski.ps
@@ -0,0 +1,41 @@
+%!PS-Adobe-3.0
+%%Creator: Aaron Puchert
+%%Title: The Sierpinski triangle
+%%Pages: 1
+%%PageOrder: Ascend
+
+%%BeginProlog
+% PAGE SETTINGS
+/pageset {
+  28.3464566 28.3464566 scale    % set cm = 1
+  0.5 0.5 translate
+  0 setlinewidth
+} def
+
+% sierpinski(n) draws a sierpinski triangle of order n
+/sierpinski {
+dup 0 gt {
+  [0.5 0 0 0.5 0 0] concat dup 1 sub sierpinski
+  [1 0 0 1 1 0] concat dup 1 sub sierpinski
+  [1 0 0 1 -1 1] concat dup 1 sub sierpinski
+  [2 0 0 2 0 -1] concat
+} {
+  newpath
+    0 0 moveto
+    1 0 lineto
+    0 1 lineto
+  closepath
+  fill
+} ifelse pop} def
+%%EndProlog
+
+%%BeginSetup
+<< /PageSize [596 843] >> setpagedevice  % A4
+%%EndSetup
+
+%%Page: Test 1
+pageset
+[20 0 10 300 sqrt 0 0] concat
+9 sierpinski
+showpage
+%%EOF
diff --git a/samples/Prolog/calc.pl b/samples/Prolog/calc.pl
deleted file mode 100644
index b7492ca8..00000000
--- a/samples/Prolog/calc.pl
+++ /dev/null
@@ -1,68 +0,0 @@
-action_module(calculator) .
-
-
-%[-,-,d1,-] --push(D)-->          [-,-,D,-]  if mode(init)
-push(D) < -
-  mode(init),
-  deny([displayed(D1),mode(init)]),
-  affirm([displayed(D),mode(cont)]).
-
-%[-,-,D1,-] --push(D)-->          [-,-,10*D1+D,-]  if mode(cont)
-push(D) < -
-  mode(cont),
-  deny(displayed(D1)),
-  New = 10*D1 + D,
-  affirm(displayed(New)).
-
-%[a,op,d,m] --push(clear)-->      [0,nop,0,0]
-push(clear) < -
-  deny([accumulator(A),op(O),displayed(D),memory(M),mode(X)]),
-  affirm([accumulator(0),op(nop),displayed(0),memory(0),mode(init)]).
-
-%[a,op,d,m] --push(mem_rec)-->    [a,op,m,m]
-push(mem_rec) < -
-  memory(M),
-  deny([displayed(D),mode(X)]),
-  affirm([displayed(M),mode(init)]).
-
-%[a,op,d,m] --push(plus)-->       [op(a,d),plus,d,m]
-push(plus) < -
-  displayed(D),
-  deny([accumulator(A),op(O),mode(X)]),
-  eval(O,A,D,V),   ; use normal arithmetic, i.e., V=O(A,D)
-  affirm([accumulator(V),op(plus),mode(init)]).
-
-%[a,op,d,m] --push(minus)-->      [op(a,d,minus,d,m]
-push(minus) lt -
-  displayed(D),
-  deny([accumulator(A),op(O),mode(X)]),
-  eval(O,A,D,V),   ; use normal arithmetic, i.e., V=O(A,D)
-  affirm([accumulator(V),op(minus),mode(init)]).
-
-%[a,op,d,m] --push(times)-->      [op(a,d),times,d,m]
-push(times) < -
-  displayed(D),
-  deny([accumulator(A),op(O),mode(X)]),
-  eval(O,A,D,V),   ; use normal arithmetic, i.e., V=O(A,D)
-  affirm([accumulator(V),op(times),mode(init)]).
-
-%[a,op,d,m] --push(equal)-->      [a,nop,op(a,d),m]
-push(equal) < -
-  accumulator(A),
-  deny([op(O),displayed(D),mode(X)]),
-  eval(O,A,D,V),
-  affirm([op(nop),displayed(V),mode(init)]).
-
-%[a,op,d,m] --push(mem_plus)-->   [a,nop,v,plus(m,v)] where v=op(a,d)
-push(mem_plus) < -
-  accumulator(A),
-  deny([op(O),displayed(D),memory(M),mode(X)]),
-  eval(O,A,D,V),
-  eval(plus,M,V,V1),
-  affirm([op(nop),displayed(V),memory(V1),mode(init)]).
-
-%[a,op,d,m] --push(plus_minus)--> [a,op,-d,m]
-push(clear) < -
-  deny([displayed(D),mode(X)]),
-  eval(minus,0,D,V),
-  affirm([displayed(V),mode(init)]).
diff --git a/samples/Prolog/format_spec.pl b/samples/Prolog/format_spec.pl
new file mode 100644
index 00000000..1508f3a3
--- /dev/null
+++ b/samples/Prolog/format_spec.pl
@@ -0,0 +1,260 @@
+:- module(format_spec, [ format_error/2
+                       , format_spec/2
+                       , format_spec//1
+                       , spec_arity/2
+                       , spec_types/2
+                       ]).
+
+:- use_module(library(dcg/basics), [eos//0, integer//1, string_without//2]).
+:- use_module(library(error)).
+:- use_module(library(when), [when/2]).
+
+% TODO loading this module is optional
+% TODO it's for my own convenience during development
+%:- use_module(library(mavis)).
+
+%% format_error(+Goal, -Error:string) is nondet.
+%
+%  True if Goal exhibits an Error in its format string. The
+%  Error string describes what is wrong with Goal. Iterates each
+%  error on backtracking.
+%
+%  Goal may be one of the following predicates:
+%
+%    * format/2
+%    * format/3
+%    * debug/3
+format_error(format(Format,Args), Error) :-
+    format_error_(Format, Args,Error).
+format_error(format(_,Format,Args), Error) :-
+    format_error_(Format,Args,Error).
+format_error(debug(_,Format,Args), Error) :-
+    format_error_(Format,Args,Error).
+
+format_error_(Format,Args,Error) :-
+    format_spec(Format, Spec),
+    !,
+    is_list(Args),
+    spec_types(Spec, Types),
+    types_error(Args, Types, Error).
+format_error_(Format,_,Error) :-
+    % \+ format_spec(Format, _),
+    format(string(Error), "Invalid format string: ~q", [Format]).
+
+types_error(Args, Types, Error) :-
+    length(Types, TypesLen),
+    length(Args, ArgsLen),
+    TypesLen =\= ArgsLen,
+    !,
+    format( string(Error)
+          , "Wrong argument count. Expected ~d, got ~d"
+          , [TypesLen, ArgsLen]
+          ).
+types_error(Args, Types, Error) :-
+    types_error_(Args, Types, Error).
+
+types_error_([Arg|_],[Type|_],Error) :-
+    ground(Arg),
+    \+ is_of_type(Type,Arg),
+    message_to_string(error(type_error(Type,Arg),_Location),Error).
+types_error_([_|Args],[_|Types],Error) :-
+    types_error_(Args, Types, Error).
+
+
+% check/0 augmentation
+:- multifile check:checker/2.
+:- dynamic check:checker/2.
+check:checker(format_spec:checker, "format/2 strings and arguments").
+
+:- dynamic format_fail/3.
+
+checker :-
+    prolog_walk_code([ module_class([user])
+                     , infer_meta_predicates(false)
+                     , autoload(false)  % format/{2,3} are always loaded
+                     , undefined(ignore)
+                     , trace_reference(_)
+                     , on_trace(check_format)
+                     ]),
+    retract(format_fail(Goal,Location,Error)),
+    print_message(warning, format_error(Goal,Location,Error)),
+    fail.  % iterate all errors
+checker.  % succeed even if no errors are found
+
+check_format(Module:Goal, _Caller, Location) :-
+    predicate_property(Module:Goal, imported_from(Source)),
+    memberchk(Source, [system,prolog_debug]),
+    can_check(Goal),
+    format_error(Goal, Error),
+    assert(format_fail(Goal, Location, Error)),
+    fail.
+check_format(_,_,_).  % succeed to avoid printing goals
+
+% true if format_error/2 can check this goal
+can_check(Goal) :-
+    once(clause(format_error(Goal,_),_)).
+
+prolog:message(format_error(Goal,Location,Error)) -->
+    prolog:message_location(Location),
+    ['~n    In goal: ~q~n    ~s'-[Goal,Error]].
+
+
+%% format_spec(-Spec)//
+%
+%  DCG for parsing format strings. It doesn't yet generate format
+%  strings from a spec.  See format_spec/2 for details.
+format_spec([]) -->
+    eos.
+format_spec([escape(Numeric,Modifier,Action)|Rest]) -->
+    "~",
+    numeric_argument(Numeric),
+    modifier_argument(Modifier),
+    action(Action),
+    format_spec(Rest).
+format_spec([text(String)|Rest]) -->
+    { when((ground(String);ground(Codes)),string_codes(String, Codes)) },
+    string_without("~", Codes),
+    { Codes \= [] },
+    format_spec(Rest).
+
+
+%% format_spec(+Format, -Spec:list) is semidet.
+%
+%  Parse a format string.  Each element of Spec is one of the following:
+%
+%    * `text(Text)` - text sent to the output as is
+%    * `escape(Num,Colon,Action)` - a format escape
+%
+%  `Num` represents the optional numeric portion of an esape. `Colon`
+%  represents the optional colon in an escape. `Action` is an atom
+%  representing the action to be take by this escape.
+format_spec(Format, Spec) :-
+    when((ground(Format);ground(Codes)),text_codes(Format, Codes)),
+    once(phrase(format_spec(Spec), Codes, [])).
+
+%% spec_arity(+FormatSpec, -Arity:positive_integer) is det.
+%
+%  True if FormatSpec requires format/2 to have Arity arguments.
+spec_arity(Spec, Arity) :-
+    spec_types(Spec, Types),
+    length(Types, Arity).
+
+
+%% spec_types(+FormatSpec, -Types:list(type)) is det.
+%
+%  True if FormatSpec requires format/2 to have arguments of Types. Each
+%  value of Types is a type as described by error:has_type/2. This
+%  notion of types is compatible with library(mavis).
+spec_types(Spec, Types) :-
+    phrase(spec_types(Spec), Types).
+
+spec_types([]) -->
+    [].
+spec_types([Item|Items]) -->
+    item_types(Item),
+    spec_types(Items).
+
+item_types(text(_)) -->
+    [].
+item_types(escape(Numeric,_,Action)) -->
+    numeric_types(Numeric),
+    action_types(Action).
+
+numeric_types(number(_)) -->
+    [].
+numeric_types(character(_)) -->
+    [].
+numeric_types(star) -->
+    [number].
+numeric_types(nothing) -->
+    [].
+
+action_types(Action) -->
+    { atom_codes(Action, [Code]) },
+    { action_types(Code, Types) },
+    phrase(Types).
+
+
+%% text_codes(Text:text, Codes:codes).
+text_codes(Var, Codes) :-
+    var(Var),
+    !,
+    string_codes(Var, Codes).
+text_codes(Atom, Codes) :-
+    atom(Atom),
+    !,
+    atom_codes(Atom, Codes).
+text_codes(String, Codes) :-
+    string(String),
+    !,
+    string_codes(String, Codes).
+text_codes(Codes, Codes) :-
+    is_of_type(codes, Codes).
+
+
+numeric_argument(number(N)) -->
+    integer(N).
+numeric_argument(character(C)) -->
+    "`",
+    [C].
+numeric_argument(star) -->
+    "*".
+numeric_argument(nothing) -->
+    "".
+
+
+modifier_argument(colon) -->
+    ":".
+modifier_argument(no_colon) -->
+    \+ ":".
+
+
+action(Action) -->
+    [C],
+    { is_action(C) },
+    { atom_codes(Action, [C]) }.
+
+
+%% is_action(+Action:integer) is semidet.
+%% is_action(-Action:integer) is multi.
+%
+%  True if Action is a valid format/2 action character. Iterates all
+%  acceptable action characters, if Action is unbound.
+is_action(Action) :-
+    action_types(Action, _).
+
+%% action_types(?Action:integer, ?Types:list(type))
+%
+%  True if Action consumes arguments matching Types. An action (like
+%  `~`), which consumes no arguments, has `Types=[]`.  For example,
+%
+%      ?- action_types(0'~, Types).
+%      Types = [].
+%      ?- action_types(0'a, Types).
+%      Types = [atom].
+action_types(0'~, []).
+action_types(0'a, [atom]).
+action_types(0'c, [integer]).  % specifically, a code
+action_types(0'd, [integer]).
+action_types(0'D, [integer]).
+action_types(0'e, [float]).
+action_types(0'E, [float]).
+action_types(0'f, [float]).
+action_types(0'g, [float]).
+action_types(0'G, [float]).
+action_types(0'i, [any]).
+action_types(0'I, [integer]).
+action_types(0'k, [any]).
+action_types(0'n, []).
+action_types(0'N, []).
+action_types(0'p, [any]).
+action_types(0'q, [any]).
+action_types(0'r, [integer]).
+action_types(0'R, [integer]).
+action_types(0's, [text]).
+action_types(0'@, [callable]).
+action_types(0't, []).
+action_types(0'|, []).
+action_types(0'+, []).
+action_types(0'w, [any]).
+action_types(0'W, [any, list]).
diff --git a/samples/Prolog/func.pl b/samples/Prolog/func.pl
new file mode 100644
index 00000000..944514e2
--- /dev/null
+++ b/samples/Prolog/func.pl
@@ -0,0 +1,194 @@
+:- module(func, [ op(675, xfy, ($))
+                , op(650, xfy, (of))
+                , ($)/2
+                , (of)/2
+                ]).
+:- use_module(library(list_util), [xfy_list/3]).
+:- use_module(library(function_expansion)).
+:- use_module(library(arithmetic)).
+:- use_module(library(error)).
+
+
+% true if the module whose terms are being read has specifically
+% imported library(func).
+wants_func :-
+    prolog_load_context(module, Module),
+    Module \== func,  % we don't want func sugar ourselves
+    predicate_property(Module:of(_,_),imported_from(func)).
+
+
+%%  compile_function(+Term, -In, -Out, -Goal) is semidet.
+%
+%   True if Term represents a function from In to Out
+%   implemented by calling Goal.  This multifile hook is
+%   called by $/2 and of/2 to convert a term into a goal.
+%   It's used at compile time for macro expansion.
+%   It's used at run time to handle functions which aren't
+%   known at compile time.
+%   When called as a hook, Term is guaranteed to be =nonvar=.
+%
+%   For example, to treat library(assoc) terms as functions which
+%   map a key to a value, one might define:
+%
+%       :- multifile compile_function/4.
+%       compile_function(Assoc, Key, Value, Goal) :-
+%           is_assoc(Assoc),
+%           Goal = get_assoc(Key, Assoc, Value).
+%
+%   Then one could write:
+%
+%       list_to_assoc([a-1, b-2, c-3], Assoc),
+%       Two = Assoc $ b,
+:- multifile compile_function/4.
+compile_function(Var, _, _, _) :-
+    % variables storing functions must be evaluated at run time
+    % and can't be compiled, a priori, into a goal
+    var(Var),
+    !,
+    fail.
+compile_function(Expr, In, Out, Out is Expr) :-
+    % arithmetic expression of one variable are simply evaluated
+    \+ string(Expr),  % evaluable/1 throws exception with strings
+    arithmetic:evaluable(Expr),
+    term_variables(Expr, [In]).
+compile_function(F, In, Out, func:Goal) :-
+    % composed functions
+    function_composition_term(F),
+    user:function_expansion(F, func:Functor, true),
+    Goal =.. [Functor,In,Out].
+compile_function(F, In, Out, Goal) :-
+    % string interpolation via format templates
+    format_template(F),
+    ( atom(F) ->
+        Goal = format(atom(Out), F, In)
+    ; string(F) ->
+        Goal = format(string(Out), F, In)
+    ; error:has_type(codes, F) ->
+        Goal = format(codes(Out), F, In)
+    ; fail  % to be explicit
+    ).
+compile_function(Dict, In, Out, Goal) :-
+    is_dict(Dict),
+    Goal = get_dict(In, Dict, Out).
+
+%%	$(+Function, +Argument) is det.
+%
+%	Apply Function to an Argument.  A Function is any predicate
+%	whose final argument generates output and whose penultimate argument
+%	accepts input.
+%
+%	This is realized by expanding function application to chained
+%	predicate calls at compile time.  Function application itself can
+%	be chained.
+%
+%	==
+%	Reversed = reverse $ sort $ [c,d,b].
+%	==
+:- meta_predicate $(2,+).
+$(_,_) :-
+    throw(error(permission_error(call, predicate, ($)/2),
+          context(_, '$/2 must be subject to goal expansion'))).
+
+user:function_expansion($(F,X), Y, Goal) :-
+    wants_func,
+    ( func:compile_function(F, X, Y, Goal) ->
+        true
+    ; var(F) -> Goal =      % defer until run time
+        ( func:compile_function(F, X, Y, P) ->
+            call(P)
+        ; call(F, X, Y)
+        )
+    ; Goal = call(F, X, Y)
+    ).
+
+
+%%	of(+F, +G) is det.
+%
+%	Creates a new function by composing F and G.  The functions are
+%	composed at compile time to create a new, compiled predicate which
+%	behaves like a function.  Function composition can be chained.
+%	Composed functions can also be applied with $/2.
+%
+%	==
+%	Reversed = reverse of sort $ [c,d,b].
+%	==
+:- meta_predicate of(2,2).
+of(_,_).
+
+
+%%  format_template(Format) is semidet.
+%
+%   True if Format is a template string suitable for format/3.
+%   The current check is very naive and should be improved.
+format_template(Format) :-
+    atom(Format), !,
+    atom_codes(Format, Codes),
+    format_template(Codes).
+format_template(Format) :-
+    string(Format),
+    !,
+    string_codes(Format, Codes),
+    format_template(Codes).
+format_template(Format) :-
+    error:has_type(codes, Format),
+    memberchk(0'~, Format).  % ' fix syntax highlighting
+
+
+% True if the argument is a function composition term
+function_composition_term(of(_,_)).
+
+% Converts a function composition term into a list of functions to compose
+functions_to_compose(Term, Funcs) :-
+    functor(Term, Op, 2),
+    Op = (of),
+    xfy_list(Op, Term, Funcs).
+
+% Thread a state variable through a list of functions.  This is similar
+% to a DCG expansion, but much simpler.
+thread_state([], [], Out, Out).
+thread_state([F|Funcs], [Goal|Goals], In, Out) :-
+    ( compile_function(F, In, Tmp, Goal) ->
+        true
+    ; var(F) ->
+        instantiation_error(F)
+    ; F =.. [Functor|Args],
+      append(Args, [In, Tmp], NewArgs),
+      Goal =.. [Functor|NewArgs]
+    ),
+    thread_state(Funcs, Goals, Tmp, Out).
+
+user:function_expansion(Term, func:Functor, true) :-
+    wants_func,
+    functions_to_compose(Term, Funcs),
+    debug(func, 'building composed function for: ~w', [Term]),
+    variant_sha1(Funcs, Sha),
+    format(atom(Functor), 'composed_function_~w', [Sha]),
+    debug(func, '  name: ~s', [Functor]),
+    ( func:current_predicate(Functor/2) ->
+        debug(func, '  composed predicate already exists', [])
+    ; true ->
+        reverse(Funcs, RevFuncs),
+        thread_state(RevFuncs, Threaded, In, Out),
+        xfy_list(',', Body, Threaded),
+        Head =.. [Functor, In, Out],
+        func:assert(Head :- Body),
+        func:compile_predicates([Functor/2])
+    ).
+
+
+% support foo(x,~,y) evaluation
+user:function_expansion(Term, Output, Goal) :-
+    wants_func,
+    compound(Term),
+
+    % has a single ~ argument
+    setof( X
+         , ( arg(X,Term,Arg), Arg == '~' )
+         , [N]
+         ),
+
+    % replace ~ with a variable
+    Term =.. [Name|Args0],
+    nth1(N, Args0, ~, Rest),
+    nth1(N, Args, Output, Rest),
+    Goal =.. [Name|Args].
diff --git a/samples/Prolog/normal_form.pl b/samples/Prolog/normal_form.pl
deleted file mode 100644
index 808e5221..00000000
--- a/samples/Prolog/normal_form.pl
+++ /dev/null
@@ -1,94 +0,0 @@
-%%----- normalize(+Wff,-NormalClauses) ------
-normalize(Wff,NormalClauses) :-
-   conVert(Wff,[],S),
-   cnF(S,T),
-   flatten_and(T,U),
-   make_clauses(U,NormalClauses).
-
-%%-----  make a sequence out of a conjunction -----
-flatten_and(X /\ Y, F) :-
-   !,
-   flatten_and(X,A),
-   flatten_and(Y, B),
-   sequence_append(A,B,F).
-flatten_and(X,X).
-
-%%-----  make a sequence out of a disjunction -----
-flatten_or(X \/ Y, F) :-
-   !,
-   flatten_or(X,A),
-   flatten_or(Y,B),
-   sequence_append(A,B,F).
-flatten_or(X,X).
-
-
-%%----- append two sequences -------------------------------
-sequence_append((X,R),S,(X,T)) :- !, sequence_append(R,S,T).
-sequence_append((X),S,(X,S)).
-
-%%----- separate into positive and negative literals -----------
-separate((A,B),P,N) :-
-   !,
-   (A = ~X -> N=[X|N1],
-               separate(B,P,N1)
-             ;
-               P=[A|P1],
-               separate(B,P1,N) ).
-separate(A,P,N) :-
-   (A = ~X -> N=[X],
-               P = []
-            ;
-               P=[A],
-               N = [] ).
-
-%%----- tautology ----------------------------
-tautology(P,N) :- some_occurs(N,P).
-
-some_occurs([F|R],B) :-
-   occurs(F,B) | some_occurs(R,B).
-
-occurs(A,[F|_]) :-
-   A == F,
-   !.
-occurs(A,[_|R]) :-
-   occurs(A,R).
-
-make_clauses((A,B),C) :-
-   !,
-   flatten_or(A,F),
-   separate(F,P,N),
-   (tautology(P,N) ->
-      make_clauses(B,C)
-          ;
-      make_clause(P,N,D),
-      C = [D|R],
-      make_clauses(B,R) ).
-make_clauses(A,C) :-
-   flatten_or(A,F),
-   separate(F,P,N),
-   (tautology(P,N) ->
-       C = []
-        ;
-       make_clause(P,N,D),
-       C = [D] ).
-
-make_clause([],N, false :- B) :-
-   !,
-   make_sequence(N,B,',').
-make_clause(P,[],H) :-
-   !,
-   make_sequence(P,H,'|').
-make_clause(P,N, H :- T) :-
-   make_sequence(P,H,'|'),
-   make_sequence(N,T,',').
-
-make_sequence([A],A,_) :- !.
-make_sequence([F|R],(F|S),'|') :-
-   make_sequence(R,S,'|').
-make_sequence([F|R],(F,S),',') :-
-   make_sequence(R,S,',').
-
-write_list([F|R]) :-
-   write(F), write('.'), nl,
-   write_list(R).
-write_list([]).
diff --git a/samples/Prolog/or-constraint.ecl b/samples/Prolog/or-constraint.ecl
new file mode 100644
index 00000000..02748be0
--- /dev/null
+++ b/samples/Prolog/or-constraint.ecl
@@ -0,0 +1,90 @@
+:- lib(ic).
+
+/**
+ * Question 1.11
+ * vabs(?Val, ?AbsVal)
+ */
+vabs(Val, AbsVal):-
+	AbsVal #> 0,
+	(
+		Val #= AbsVal
+	;
+		Val #= -AbsVal
+	),
+	labeling([Val, AbsVal]).
+
+/**
+ * vabsIC(?Val, ?AbsVal)
+ */
+vabsIC(Val, AbsVal):-
+	AbsVal #> 0,
+	Val #= AbsVal or Val #= -AbsVal,
+	labeling([Val, AbsVal]).
+
+/**
+ * Question 1.12
+ */
+% X #:: -10..10, vabs(X, Y).
+% X #:: -10..10, vabsIC(X, Y).
+
+/**
+ * Question 1.13
+ * faitListe(?ListVar, ?Taille, +Min, +Max)
+ */
+faitListe([], 0, _, _):-!.
+faitListe([First|Rest], Taille, Min, Max):-
+	First #:: Min..Max,
+	Taille1 #= Taille - 1,
+	faitListe(Rest, Taille1, Min, Max).
+
+/**
+ * Question 1.14
+ * suite(?ListVar)
+ */
+suite([Xi, Xi1, Xi2]):-
+	checkRelation(Xi, Xi1, Xi2).
+suite([Xi, Xi1, Xi2|Rest]):-
+	checkRelation(Xi, Xi1, Xi2),
+	suite([Xi1, Xi2|Rest]).
+
+/**
+ * checkRelation(?Xi, ?Xi1, ?Xi2)
+ */
+checkRelation(Xi, Xi1, Xi2):-
+	vabs(Xi1, VabsXi1),
+	Xi2 #= VabsXi1 - Xi.
+
+/**
+ * Question 1.15
+ * checkPeriode(+ListVar).
+ */
+% TODO Any better solution?
+checkPeriode(ListVar):-
+	length(ListVar, Length),
+	Length < 10.
+checkPeriode([X1, X2, X3, X4, X5, X6, X7, X8, X9, X10|Rest]):-
+	X1 =:= X10,
+	checkPeriode([X2, X3, X4, X5, X6, X7, X8, X9, X10|Rest]).
+% faitListe(ListVar, 18, -9, 9), suite(ListVar), checkPeriode(ListVar). => 99 solutions
+
+
+/**
+ * Tests
+ */
+/*
+vabs(5, 5). => Yes
+vabs(5, -5). => No
+vabs(-5, 5). => Yes
+vabs(X, 5).
+vabs(X, AbsX). 
+vabsIC(5, 5). => Yes
+vabsIC(5, -5). => No
+vabsIC(-5, 5). => Yes
+vabsIC(X, 5).
+vabsIC(X, AbsX).
+
+faitListe(ListVar, 5, 1, 3). => 243 solutions
+faitListe([_, _, _, _, _], Taille, 1, 3). => Taille = 5 !!!!!!!!!!!!!!!!
+
+faitListe(ListVar, 18, -9, 9), suite(ListVar). => 99 solutions
+*/
\ No newline at end of file
diff --git a/samples/Prolog/puzzle.pl b/samples/Prolog/puzzle.pl
deleted file mode 100644
index 9b0deb9c..00000000
--- a/samples/Prolog/puzzle.pl
+++ /dev/null
@@ -1,287 +0,0 @@
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%%
-%%%     A* Algorithm
-%%%
-%%%
-%%%     Nodes have form    S#D#F#A
-%%%            where S describes the state or configuration
-%%%                  D is the depth of the node
-%%%                  F is the evaluation function value
-%%%                  A is the ancestor list for the node
-
-:- op(400,yfx,'#').    /* Node builder notation */
-
-solve(State,Soln) :- f_function(State,0,F),
-                     search([State#0#F#[]],S), reverse(S,Soln).
-
-f_function(State,D,F) :- h_function(State,H),
-                         F is D + H.
-
-search([State#_#_#Soln|_], Soln) :- goal(State).
-search([B|R],S) :- expand(B,Children),
-                   insert_all(Children,R,Open),
-                   search(Open,S).
-
-insert_all([F|R],Open1,Open3) :- insert(F,Open1,Open2),
-                                 insert_all(R,Open2,Open3).
-insert_all([],Open,Open).
-
-insert(B,Open,Open) :- repeat_node(B,Open), ! .
-insert(B,[C|R],[B,C|R]) :- cheaper(B,C), ! .
-insert(B,[B1|R],[B1|S]) :- insert(B,R,S), !.
-insert(B,[],[B]).
-
-repeat_node(P#_#_#_, [P#_#_#_|_]).
-
-cheaper( _#_#F1#_ , _#_#F2#_ ) :- F1 < F2.
-
-expand(State#D#_#S,All_My_Children) :-
-     bagof(Child#D1#F#[Move|S],
-           (D1 is D+1,
-             move(State,Child,Move),
-             f_function(Child,D1,F)),
-           All_My_Children).
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%%
-%%%     8-puzzle solver
-%%%
-%%%
-%%%     State have form    A/B/C/D/E/F/G/H/I
-%%%            where {A,...,I} = {0,...,8}
-%%%               0 represents the empty tile
-%%%
-
-goal(1/2/3/8/0/4/7/6/5).
-
-%%% The puzzle moves
-
-left( A/0/C/D/E/F/H/I/J , 0/A/C/D/E/F/H/I/J ).
-left( A/B/C/D/0/F/H/I/J , A/B/C/0/D/F/H/I/J ).
-left( A/B/C/D/E/F/H/0/J , A/B/C/D/E/F/0/H/J ).
-left( A/B/0/D/E/F/H/I/J , A/0/B/D/E/F/H/I/J ).
-left( A/B/C/D/E/0/H/I/J , A/B/C/D/0/E/H/I/J ).
-left( A/B/C/D/E/F/H/I/0 , A/B/C/D/E/F/H/0/I ).
-
-up( A/B/C/0/E/F/H/I/J , 0/B/C/A/E/F/H/I/J ).
-up( A/B/C/D/0/F/H/I/J , A/0/C/D/B/F/H/I/J ).
-up( A/B/C/D/E/0/H/I/J , A/B/0/D/E/C/H/I/J ).
-up( A/B/C/D/E/F/0/I/J , A/B/C/0/E/F/D/I/J ).
-up( A/B/C/D/E/F/H/0/J , A/B/C/D/0/F/H/E/J ).
-up( A/B/C/D/E/F/H/I/0 , A/B/C/D/E/0/H/I/F ).
-
-right( A/0/C/D/E/F/H/I/J , A/C/0/D/E/F/H/I/J ).
-right( A/B/C/D/0/F/H/I/J , A/B/C/D/F/0/H/I/J ).
-right( A/B/C/D/E/F/H/0/J , A/B/C/D/E/F/H/J/0 ).
-right( 0/B/C/D/E/F/H/I/J , B/0/C/D/E/F/H/I/J ).
-right( A/B/C/0/E/F/H/I/J , A/B/C/E/0/F/H/I/J ).
-right( A/B/C/D/E/F/0/I/J , A/B/C/D/E/F/I/0/J ).
-
-down( A/B/C/0/E/F/H/I/J , A/B/C/H/E/F/0/I/J ).
-down( A/B/C/D/0/F/H/I/J , A/B/C/D/I/F/H/0/J ).
-down( A/B/C/D/E/0/H/I/J , A/B/C/D/E/J/H/I/0 ).
-down( 0/B/C/D/E/F/H/I/J , D/B/C/0/E/F/H/I/J ).
-down( A/0/C/D/E/F/H/I/J , A/E/C/D/0/F/H/I/J ).
-down( A/B/0/D/E/F/H/I/J , A/B/F/D/E/0/H/I/J ).
-
-%%% the heuristic function
-h_function(Puzz,H) :- p_fcn(Puzz,P),
-                      s_fcn(Puzz,S),
-                      H is P + 3*S.
-
-
-%%% the move
-move(P,C,left) :-  left(P,C).
-move(P,C,up) :-  up(P,C).
-move(P,C,right) :-  right(P,C).
-move(P,C,down) :-  down(P,C).
-
-%%% the Manhattan distance function
-p_fcn(A/B/C/D/E/F/G/H/I, P) :-
-     a(A,Pa), b(B,Pb), c(C,Pc),
-     d(D,Pd), e(E,Pe), f(F,Pf),
-     g(G,Pg), h(H,Ph), i(I,Pi),
-     P is Pa+Pb+Pc+Pd+Pe+Pf+Pg+Ph+Pg+Pi.
-
-a(0,0). a(1,0). a(2,1). a(3,2). a(4,3). a(5,4). a(6,3). a(7,2). a(8,1).
-b(0,0). b(1,1). b(2,0). b(3,1). b(4,2). b(5,3). b(6,2). b(7,3). b(8,2).
-c(0,0). c(1,2). c(2,1). c(3,0). c(4,1). c(5,2). c(6,3). c(7,4). c(8,3).
-d(0,0). d(1,1). d(2,2). d(3,3). d(4,2). d(5,3). d(6,2). d(7,2). d(8,0).
-e(0,0). e(1,2). e(2,1). e(3,2). e(4,1). e(5,2). e(6,1). e(7,2). e(8,1).
-f(0,0). f(1,3). f(2,2). f(3,1). f(4,0). f(5,1). f(6,2). f(7,3). f(8,2).
-g(0,0). g(1,2). g(2,3). g(3,4). g(4,3). g(5,2). g(6,2). g(7,0). g(8,1).
-h(0,0). h(1,3). h(2,3). h(3,3). h(4,2). h(5,1). h(6,0). h(7,1). h(8,2).
-i(0,0). i(1,4). i(2,3). i(3,2). i(4,1). i(5,0). i(6,1). i(7,2). i(8,3).
-
-%%% the out-of-cycle function
-s_fcn(A/B/C/D/E/F/G/H/I, S) :-
-     s_aux(A,B,S1), s_aux(B,C,S2), s_aux(C,F,S3),
-     s_aux(F,I,S4), s_aux(I,H,S5), s_aux(H,G,S6),
-     s_aux(G,D,S7), s_aux(D,A,S8), s_aux(E,S9),
-     S is S1+S2+S3+S4+S5+S6+S7+S8+S9.
-
-s_aux(0,0) :- !.
-s_aux(_,1).
-
-s_aux(X,Y,0) :- Y is X+1, !.
-s_aux(8,1,0) :- !.
-s_aux(_,_,2).
-
-%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
-%%%
-%%%     8-puzzle animation -- using VT100 character graphics
-%%%
-%%%
-%%%
-
-puzzle(P) :- solve(P,S),
-             animate(P,S),
-             message.
-
-animate(P,S) :- initialize(P),
-                cursor(1,2), write(S),
-                cursor(1,22), write('Hit ENTER to step solver.'),
-                get0(_X),
-                play_back(S).
-
-:- dynamic location/3.
-
-initialize(A/B/C/D/E/F/H/I/J) :-
-  cls,
-  retractall(location(_,_,_)),
-  assert(location(A,20,5)),
-  assert(location(B,30,5)),
-  assert(location(C,40,5)),
-  assert(location(F,40,10)),
-  assert(location(J,40,15)),
-  assert(location(I,30,15)),
-  assert(location(H,20,15)),
-  assert(location(D,20,10)),
-  assert(location(E,30,10)), draw_all.
-
-draw_all :- draw(1), draw(2), draw(3), draw(4),
-            draw(5), draw(6), draw(7), draw(8).
-
-%%% play_back([left,right,up,...]).
-play_back([M|R]) :- call(M), get0(_X), play_back(R).
-play_back([]) :- cursor(1,24).  %%% Put cursor out of the way
-
-message :- nl,nl,
-   write('    ********************************************'), nl,
-   write('    *  Enter 8-puzzle goals in the form ...    *'), nl,
-   write('    *     ?-  puzzle(0/8/1/2/4/3/7/6/5).       *'), nl,
-   write('    *   Enter goal ''message'' to reread this.   *'), nl,
-   write('    ********************************************'), nl, nl.
-
-
-cursor(X,Y) :- put(27), put(91), %%% ESC [
-               write(Y),
-               put(59),           %%%   ;
-               write(X),
-               put(72).           %%%   M
-
-%%% clear the screen, quickly
-cls :-  put(27), put("["), put("2"), put("J").
-
-%%% video attributes -- bold and blink not working
-plain         :- put(27), put("["), put("0"), put("m").
-reverse_video :- put(27), put("["), put("7"), put("m").
-
-
-%%% Tile objects, character map(s)
-%%% Each tile should be drawn using the character map,
-%%%   drawn at 'location', which is asserted and retracted
-%%%   by 'playback'.
-character_map(N, [ [' ',' ',' ',' ',' ',' ',' '],
-                   [' ',' ',' ', N ,' ',' ',' '],
-                   [' ',' ',' ',' ',' ',' ',' '] ]).
-
-
-%%% move empty tile (spot) to the left
-left :- retract(location(0,X0,Y0)),
-        Xnew is X0 - 10,
-        location(Tile,Xnew,Y0),
-        assert(location(0,Xnew,Y0)),
-        right(Tile),right(Tile),right(Tile),
-        right(Tile),right(Tile),
-        right(Tile),right(Tile),right(Tile),
-        right(Tile),right(Tile).
-
-up :- retract(location(0,X0,Y0)),
-      Ynew is Y0 - 5,
-      location(Tile,X0,Ynew),
-      assert(location(0,X0,Ynew)),
-      down(Tile),down(Tile),down(Tile),down(Tile),down(Tile).
-
-right :- retract(location(0,X0,Y0)),
-         Xnew is X0 + 10,
-         location(Tile,Xnew,Y0),
-         assert(location(0,Xnew,Y0)),
-         left(Tile),left(Tile),left(Tile),left(Tile),left(Tile),
-         left(Tile),left(Tile),left(Tile),left(Tile),left(Tile).
-
-down :- retract(location(0,X0,Y0)),
-        Ynew is Y0 + 5,
-        location(Tile,X0,Ynew),
-        assert(location(0,X0,Ynew)),
-        up(Tile),up(Tile),up(Tile),up(Tile),up(Tile).
-
-
-draw(Obj) :- reverse_video, character_map(Obj,M),
-             location(Obj,X,Y),
-             draw(X,Y,M), plain.
-
-%%% hide tile
-hide(Obj) :- character_map(Obj,M),
-             location(Obj,X,Y),
-             hide(X,Y,M).
-
-hide(_,_,[]).
-hide(X,Y,[R|G]) :- hide_row(X,Y,R),
-                   Y1 is Y + 1,
-                   hide(X,Y1,G).
-
-hide_row(_,_,[]).
-hide_row(X,Y,[_|R]) :- cursor(X,Y),
-                       write(' '),
-                       X1 is X + 1,
-                       hide_row(X1,Y,R).
-
-%%% draw tile
-draw(_,_,[]).
-draw(X,Y,[R|G]) :- draw_row(X,Y,R),
-                   Y1 is Y + 1,
-                   draw(X,Y1,G).
-
-draw_row(_,_,[]).
-draw_row(X,Y,[P|R]) :- cursor(X,Y),
-                       write(P),
-                       X1 is X + 1,
-                       draw_row(X1,Y,R).
-
-%%% Move an Object up
-up(Obj)    :- hide(Obj),
-              retract(location(Obj,X,Y)),
-              Y1 is Y - 1,
-              assert(location(Obj,X,Y1)),
-              draw(Obj).
-
-down(Obj)  :- hide(Obj),
-              retract(location(Obj,X,Y)),
-              Y1 is Y + 1,
-              assert(location(Obj,X,Y1)),
-              draw(Obj).
-
-left(Obj)  :- hide(Obj),
-              retract(location(Obj,X,Y)),
-              X1 is X - 1,
-              assert(location(Obj,X1,Y)),
-              draw(Obj).
-
-right(Obj) :- hide(Obj),
-              retract(location(Obj,X,Y)),
-              X1 is X + 1,
-              assert(location(Obj,X1,Y)),
-              draw(Obj).
-
-:- message.
diff --git a/samples/Prolog/quicksort.pl b/samples/Prolog/quicksort.pl
deleted file mode 100644
index eb4467b4..00000000
--- a/samples/Prolog/quicksort.pl
+++ /dev/null
@@ -1,13 +0,0 @@
-partition([], _, [], []).
-partition([X|Xs], Pivot, Smalls, Bigs) :-
-    (   X @< Pivot ->
-        Smalls = [X|Rest],
-        partition(Xs, Pivot, Rest, Bigs)
-    ;   Bigs = [X|Rest],
-        partition(Xs, Pivot, Smalls, Rest)
-    ).
-
-quicksort([])     --> [].
-quicksort([X|Xs]) -->
-    { partition(Xs, X, Smaller, Bigger) },
-    quicksort(Smaller), [X], quicksort(Bigger).
diff --git a/samples/Prolog/test-prolog.pl b/samples/Prolog/test-prolog.pl
deleted file mode 100644
index aab83d54..00000000
--- a/samples/Prolog/test-prolog.pl
+++ /dev/null
@@ -1,12 +0,0 @@
-/* Prolog test file */
-male(john).
-male(peter).
-
-female(vick).
-female(christie).
-
-parents(john, peter, christie).
-parents(vick, peter, christie).
-
-/* X is a brother of Y */
-brother(X, Y) :- male(X), parents(X, F, M), parents(Y, F, M).
diff --git a/samples/Prolog/test-prolog.prolog b/samples/Prolog/test-prolog.prolog
new file mode 100644
index 00000000..b1b34b67
--- /dev/null
+++ b/samples/Prolog/test-prolog.prolog
@@ -0,0 +1,12 @@
+-/* Prolog test file */
+ -male(john).
+ -male(peter).
+ -
+ -female(vick).
+ -female(christie).
+ -
+ -parents(john, peter, christie).
+ -parents(vick, peter, christie).
+ -
+ -/* X is a brother of Y */
+ -brother(X, Y) :- male(X), parents(X, F, M), parents(Y, F, M).
diff --git a/samples/Prolog/turing.pl b/samples/Prolog/turing.pl
index 82fe104f..a7c36e84 100644
--- a/samples/Prolog/turing.pl
+++ b/samples/Prolog/turing.pl
@@ -1,21 +1,21 @@
-turing(Tape0, Tape) :-
-    perform(q0, [], Ls, Tape0, Rs),
-    reverse(Ls, Ls1),
-    append(Ls1, Rs, Tape).
-
-perform(qf, Ls, Ls, Rs, Rs) :- !.
-perform(Q0, Ls0, Ls, Rs0, Rs) :-
-    symbol(Rs0, Sym, RsRest),
-    once(rule(Q0, Sym, Q1, NewSym, Action)),
-    action(Action, Ls0, Ls1, [NewSym|RsRest], Rs1),
-    perform(Q1, Ls1, Ls, Rs1, Rs).
-
-symbol([], b, []).
-symbol([Sym|Rs], Sym, Rs).
-
-action(left, Ls0, Ls, Rs0, Rs) :- left(Ls0, Ls, Rs0, Rs).
-action(stay, Ls, Ls, Rs, Rs).
-action(right, Ls0, [Sym|Ls0], [Sym|Rs], Rs).
-
-left([], [], Rs0, [b|Rs0]).
-left([L|Ls], Ls, Rs, [L|Rs]).
+-turing(Tape0, Tape) :-
+ -    perform(q0, [], Ls, Tape0, Rs),
+ -    reverse(Ls, Ls1),
+ -    append(Ls1, Rs, Tape).
+ -
+ -perform(qf, Ls, Ls, Rs, Rs) :- !.
+ -perform(Q0, Ls0, Ls, Rs0, Rs) :-
+ -    symbol(Rs0, Sym, RsRest),
+ -    once(rule(Q0, Sym, Q1, NewSym, Action)),
+ -    action(Action, Ls0, Ls1, [NewSym|RsRest], Rs1),
+ -    perform(Q1, Ls1, Ls, Rs1, Rs).
+ -
+ -symbol([], b, []).
+ -symbol([Sym|Rs], Sym, Rs).
+ -
+ -action(left, Ls0, Ls, Rs0, Rs) :- left(Ls0, Ls, Rs0, Rs).
+ -action(stay, Ls, Ls, Rs, Rs).
+ -action(right, Ls0, [Sym|Ls0], [Sym|Rs], Rs).
+ -
+ -left([], [], Rs0, [b|Rs0]).
+ -left([L|Ls], Ls, Rs, [L|Rs]).
diff --git a/samples/Propeller Spin/4x4 Keypad Reader.spin b/samples/Propeller Spin/4x4 Keypad Reader.spin
new file mode 100644
index 00000000..c822bd04
--- /dev/null
+++ b/samples/Propeller Spin/4x4 Keypad Reader.spin	
@@ -0,0 +1,97 @@
+{{
+*****************************************
+* 4x4 Keypad Reader           v1.0      *
+* Author: Beau Schwabe                  *
+* Copyright (c) 2007 Parallax           *               
+* See end of file for terms of use.     *               
+*****************************************
+}}
+{
+
+Operation:
+
+This object uses a capacitive PIN approach to reading the keypad.
+To do so, ALL pins are made LOW and an OUTPUT to "discharge" the
+I/O pins.  Then, ALL pins are set to an INPUT state.  At this point,
+only one pin is made HIGH and an OUTPUT at a time.  If the "switch"
+is closed, then a HIGH will be read on the input, otherwise a LOW
+will be returned.
+
+The keypad decoding routine only requires two subroutines and returns
+the entire 4x4 keypad matrix into a single WORD variable indicating
+which buttons are pressed.  Multiple button presses are allowed with
+the understanding that“BOX entries can be confused. An example of a
+BOX entry... 1,2,4,5 or 1,4,3,6 or 4,6,*,#  etc. where any 3 of the 4
+buttons pressed will evaluate the non pressed button as being pressed,
+even when they are not.  There is no danger of any physical or
+electrical damage, that s just the way this sensing method happens to
+work.
+
+Schematic:
+No resistors, No capacitors.  The connections are directly from the
+keypad to the I/O's.  I literally plugged mine right into the demo
+board RevC.
+
+Looking at the Back of the 4x4 keypad...
+
+       P7         P0
+         ││││││││
+┌─────── ││││││││ ───────┐
+│     oo ││││││││ o      │
+│                        │
+│  O    O    O    O    O │ 
+│                        │
+│  O    O    O    O    O │
+│         {LABEL}        │
+│  O    O    O    O    O │ 
+│                        │
+│  O    O    O    O    O │
+│                        │
+│  O    O    O    O    O │
+│             o    o     │
+└────────────────────────┘
+
+}
+VAR
+  word  keypad
+  
+PUB ReadKeyPad
+    keypad := 0                 'Clear 4x4 'keypad' value
+    ReadRow(3)                  'Call routine to read entire ROW 0
+    keypad <<= 4                'Shift 'keypad' value left by 4
+    ReadRow(2)                  'Call routine to read entire ROW 1
+    keypad <<= 4                'Shift 'keypad' value left by 4
+    ReadRow(1)                  'Call routine to read entire ROW 2
+    keypad <<= 4                'Shift 'keypad' value left by 4
+    ReadRow(0)                  'Call routine to read entire ROW 3
+    Result := keypad
+
+PRI ReadRow(n)
+    outa[0..7]~                 'preset P0 to P7 as LOWs
+    dira[0..7]~~                'make P0 to P7 OUTPUTs ... discharge pins or "capacitors" to VSS
+    dira[0..7]~                 'make P0 to P7 INPUTSs ... now the pins act like tiny capacitors
+    outa[n]~~                   'preset Pin 'n' HIGH         
+    dira[n]~~                   'make Pin 'n' an OUTPUT... Make only one pin HIGH ; will charge
+                                '                          "capacitor" if switch is closed.
+                                ' 
+    keypad += ina[4..7]         'read ROW value        ... If a switch is open, the pin or "capacitor"
+    dira[n]~                    'make Pn an INPUT          will remain discharged
+    
+DAT
+{{
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │                                                            
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │ 
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}    
\ No newline at end of file
diff --git a/samples/Propeller Spin/Debug_Lcd.spin b/samples/Propeller Spin/Debug_Lcd.spin
new file mode 100644
index 00000000..8e3fa1f5
--- /dev/null
+++ b/samples/Propeller Spin/Debug_Lcd.spin	
@@ -0,0 +1,181 @@
+''****************************************
+''*  Debug_Lcd v1.2                      *
+''*  Authors: Jon Williams, Jeff Martin  *
+''*  Copyright (c) 2006 Parallax, Inc.   *
+''*  See end of file for terms of use.   *
+''****************************************
+''
+'' Debugging wrapper for Serial_Lcd object
+''
+'' v1.2 - March 26, 2008 - Updated by Jeff Martin to conform to Propeller object initialization standards.
+'' v1.1 - April 29, 2006 - Updated by Jon Williams for consistency.
+''
+
+
+OBJ
+
+  lcd : "serial_lcd"                                    ' driver for Parallax Serial LCD
+  num : "simple_numbers"                                ' number to string conversion
+
+
+PUB init(pin, baud, lines) : okay
+
+'' Initializes serial LCD object
+'' -- returns true if all parameters okay
+
+  okay := lcd.init(pin, baud, lines) 
+
+
+PUB finalize
+
+'' Finalizes lcd object -- frees the pin (floats)
+
+  lcd.finalize
+
+  
+PUB putc(txbyte)
+
+'' Send a byte to the terminal
+
+  lcd.putc(txbyte)
+  
+  
+PUB str(strAddr)
+
+'' Print a zero-terminated string
+
+  lcd.str(strAddr)
+
+
+PUB dec(value)
+
+'' Print a signed decimal number
+
+  lcd.str(num.dec(value))  
+
+
+PUB decf(value, width) 
+
+'' Prints signed decimal value in space-padded, fixed-width field
+
+  lcd.str(num.decf(value, width))   
+  
+
+PUB decx(value, digits) 
+
+'' Prints zero-padded, signed-decimal string
+'' -- if value is negative, field width is digits+1
+
+  lcd.str(num.decx(value, digits)) 
+
+
+PUB hex(value, digits)
+
+'' Print a hexadecimal number
+
+  lcd.str(num.hex(value, digits))
+
+
+PUB ihex(value, digits)
+
+'' Print an indicated hexadecimal number
+
+  lcd.str(num.ihex(value, digits))   
+
+
+PUB bin(value, digits)
+
+'' Print a binary number
+
+  lcd.str(num.bin(value, digits))
+
+
+PUB ibin(value, digits)
+
+'' Print an indicated (%) binary number
+
+  lcd.str(num.ibin(value, digits))     
+    
+
+PUB cls
+
+'' Clears LCD and moves cursor to home (0, 0) position
+
+  lcd.cls 
+
+
+PUB home
+
+'' Moves cursor to 0, 0
+
+  lcd.home
+  
+
+PUB gotoxy(col, line)
+
+'' Moves cursor to col/line
+
+  lcd.gotoxy(col, line)
+
+  
+PUB clrln(line)
+
+'' Clears line
+
+  lcd.clrln(line)
+
+
+PUB cursor(type)
+
+'' Selects cursor type
+''   0 : cursor off, blink off  
+''   1 : cursor off, blink on   
+''   2 : cursor on, blink off  
+''   3 : cursor on, blink on
+
+  lcd.cursor(type)
+       
+
+PUB display(status)
+
+'' Controls display visibility; use display(false) to hide contents without clearing
+
+  if status
+    lcd.displayOn
+  else
+    lcd.displayOff
+
+
+PUB custom(char, chrDataAddr)
+
+'' Installs custom character map
+'' -- chrDataAddr is address of 8-byte character definition array
+
+  lcd.custom(char, chrDataAddr)
+
+      
+PUB backLight(status)
+
+'' Enable (true) or disable (false) LCD backlight
+'' -- affects only backlit models
+
+  lcd.backLight(status)
+
+{{
+
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │                                                            
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │ 
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}  
\ No newline at end of file
diff --git a/samples/Propeller Spin/Graphics.spin b/samples/Propeller Spin/Graphics.spin
new file mode 100644
index 00000000..26295017
--- /dev/null
+++ b/samples/Propeller Spin/Graphics.spin	
@@ -0,0 +1,1669 @@
+''***************************************
+''*  Graphics Driver v1.0               *
+''*  Author: Chip Gracey                *
+''*  Copyright (c) 2005 Parallax, Inc.  *               
+''*  See end of file for terms of use.  *               
+''***************************************
+
+''
+'' Theory of Operation:
+''
+'' A cog is launched which processes commands via the PUB routines.
+''
+'' Points, lines, arcs, sprites, text, and polygons are rasterized into
+'' a specified stretch of memory which serves as a generic bitmap buffer.
+''
+'' The bitmap can be displayed by the TV.SRC or VGA.SRC driver.
+''
+'' See GRAPHICS_DEMO.SRC for usage example.
+''
+
+CON
+
+  #1, _setup, _color, _width, _plot, _line, _arc, _vec, _vecarc, _pix, _pixarc, _text, _textarc, _textmode, _fill, _loop
+
+VAR
+
+  long  cog
+
+  long  command
+
+  long  bitmap_base                                     'bitmap data
+  long  bitmap_longs
+  word  bases[32]
+
+  long  pixel_width                                     'pixel data
+  long  slices[8]
+
+  long  text_xs, text_ys, text_sp, text_just            'text data (these 4 must be contiguous)
+
+
+PUB start : okay
+
+'' Start graphics driver - starts a cog
+'' returns false if no cog available
+
+  fontptr := @font                                      'set font pointer (same for all instances)
+
+  stop
+  okay := cog := cognew(@loop, @command) + 1
+
+
+PUB stop
+
+'' Stop graphics driver - frees a cog
+
+  if cog
+    cogstop(cog~ - 1)
+
+  command~
+
+
+PUB setup(x_tiles, y_tiles, x_origin, y_origin, base_ptr) | bases_ptr, slices_ptr
+
+'' Set bitmap parameters
+''
+''   x_tiles        - number of x tiles (tiles are 16x16 pixels each)
+''   y_tiles        - number of y tiles
+''   x_origin       - relative-x center pixel
+''   y_origin       - relative-y center pixel
+''   base_ptr       - base address of bitmap
+
+  setcommand(_loop, 0)                                  'make sure last command finished
+
+  repeat bases_ptr from 0 to x_tiles - 1 <# 31          'write bases
+    bases[bases_ptr] := base_ptr + bases_ptr * y_tiles << 6
+
+  y_tiles <<= 4                                         'adjust arguments and do setup command
+  y_origin := y_tiles - y_origin - 1
+  bases_ptr := @bases
+  slices_ptr := @slices
+  setcommand(_setup, @x_tiles)
+
+  bitmap_base := base_ptr                               'retain high-level bitmap data
+  bitmap_longs := x_tiles * y_tiles
+
+
+PUB clear
+
+'' Clear bitmap
+
+  setcommand(_loop, 0)                                  'make sure last command finished
+
+  longfill(bitmap_base, 0, bitmap_longs)                'clear bitmap
+
+
+PUB copy(dest_ptr)
+
+'' Copy bitmap
+'' use for double-buffered display (flicker-free)
+''
+''   dest_ptr       - base address of destination bitmap
+
+  setcommand(_loop, 0)                                  'make sure last command finished
+
+  longmove(dest_ptr, bitmap_base, bitmap_longs)         'copy bitmap
+
+
+PUB color(c)
+
+'' Set pixel color to two-bit pattern
+''
+''   c              - color code in bits[1..0]
+
+  setcommand(_color, @colors[c & 3])                    'set color
+
+
+PUB width(w) | pixel_passes, r, i, p
+
+'' Set pixel width
+'' actual width is w[3..0] + 1
+''
+''   w              - 0..15 for round pixels, 16..31 for square pixels
+
+  r := not w & $10                                      'determine pixel shape/width
+  w &= $F
+  pixel_width := w
+  pixel_passes := w >> 1 + 1
+
+  setcommand(_width, @w)                                'do width command now to avoid updating slices when busy
+
+  p := w ^ $F                                           'update slices to new shape/width
+  repeat i from 0 to w >> 1
+    slices[i] := true >> (p << 1) << (p & $E)
+    if r and pixels[w] & |< i
+      p += 2
+    if r and i == pixel_passes - 2
+      p += 2
+
+
+PUB colorwidth(c, w)
+
+'' Set pixel color and width
+
+  color(c)
+  width(w)
+
+
+PUB plot(x, y)
+
+'' Plot point
+''
+''   x,y            - point
+
+  setcommand(_plot, @x)
+
+
+PUB line(x, y)
+
+'' Draw a line to point
+''
+''   x,y            - endpoint
+
+  setcommand(_line, @x)
+
+
+PUB arc(x, y, xr, yr, angle, anglestep, steps, arcmode)
+
+'' Draw an arc
+''
+''   x,y            - center of arc
+''   xr,yr          - radii of arc
+''   angle          - initial angle in bits[12..0] (0..$1FFF = 0°..359.956°)
+''   anglestep      - angle step in bits[12..0]
+''   steps          - number of steps (0 just leaves (x,y) at initial arc position)
+''   arcmode        - 0: plot point(s)
+''                    1: line to point(s)
+''                    2: line between points
+''                    3: line from point(s) to center
+
+  setcommand(_arc, @x)
+
+
+PUB vec(x, y, vecscale, vecangle, vecdef_ptr)
+
+'' Draw a vector sprite
+''
+''   x,y            - center of vector sprite
+''   vecscale       - scale of vector sprite ($100 = 1x)
+''   vecangle       - rotation angle of vector sprite in bits[12..0]
+''   vecdef_ptr     - address of vector sprite definition
+''
+''
+'' Vector sprite definition:
+''
+''    word    $8000|$4000+angle       'vector mode + 13-bit angle (mode: $4000=plot, $8000=line)
+''    word    length                  'vector length
+''    ...                             'more vectors
+''    ...
+''    word    0                       'end of definition
+
+  setcommand(_vec, @x)
+
+
+PUB vecarc(x, y, xr, yr, angle, vecscale, vecangle, vecdef_ptr)
+
+'' Draw a vector sprite at an arc position
+''
+''   x,y            - center of arc
+''   xr,yr          - radii of arc
+''   angle          - angle in bits[12..0] (0..$1FFF = 0°..359.956°)
+''   vecscale       - scale of vector sprite ($100 = 1x)
+''   vecangle       - rotation angle of vector sprite in bits[12..0]
+''   vecdef_ptr     - address of vector sprite definition
+
+  setcommand(_vecarc, @x)
+
+
+PUB pix(x, y, pixrot, pixdef_ptr)
+
+'' Draw a pixel sprite
+''
+''   x,y            - center of vector sprite
+''   pixrot         - 0: 0°, 1: 90°, 2: 180°, 3: 270°, +4: mirror
+''   pixdef_ptr     - address of pixel sprite definition
+''
+''
+'' Pixel sprite definition:
+''
+''    word                            'word align, express dimensions and center, define pixels
+''    byte    xwords, ywords, xorigin, yorigin
+''    word    %%xxxxxxxx,%%xxxxxxxx
+''    word    %%xxxxxxxx,%%xxxxxxxx
+''    word    %%xxxxxxxx,%%xxxxxxxx
+''    ...
+
+  setcommand(_pix, @x)
+
+
+PUB pixarc(x, y, xr, yr, angle, pixrot, pixdef_ptr)
+
+'' Draw a pixel sprite at an arc position
+''
+''   x,y            - center of arc
+''   xr,yr          - radii of arc
+''   angle          - angle in bits[12..0] (0..$1FFF = 0°..359.956°)
+''   pixrot         - 0: 0°, 1: 90°, 2: 180°, 3: 270°, +4: mirror
+''   pixdef_ptr     - address of pixel sprite definition
+
+  setcommand(_pixarc, @x)
+
+
+PUB text(x, y, string_ptr) | justx, justy
+
+'' Draw text
+''
+''   x,y            - text position (see textmode for sizing and justification)
+''   string_ptr     - address of zero-terminated string (it may be necessary to call .finish
+''                    immediately afterwards to prevent subsequent code from clobbering the
+''                    string as it is being drawn
+
+  justify(string_ptr, @justx)                           'justify string and draw text
+  setcommand(_text, @x)
+
+
+PUB textarc(x, y, xr, yr, angle, string_ptr) | justx, justy
+
+'' Draw text at an arc position
+''
+''   x,y            - center of arc
+''   xr,yr          - radii of arc
+''   angle          - angle in bits[12..0] (0..$1FFF = 0°..359.956°)
+''   string_ptr     - address of zero-terminated string (it may be necessary to call .finish
+''                    immediately afterwards to prevent subsequent code from clobbering the
+''                    string as it is being drawn
+
+  justify(string_ptr, @justx)                           'justify string and draw text
+  setcommand(_textarc, @x)
+
+
+PUB textmode(x_scale, y_scale, spacing, justification)
+
+'' Set text size and justification
+''
+''   x_scale        - x character scale, should be 1+
+''   y_scale        - y character scale, should be 1+
+''   spacing        - character spacing, 6 is normal
+''   justification  - bits[1..0]: 0..3 = left, center, right, left
+''                    bits[3..2]: 0..3 = bottom, center, top, bottom
+
+  longmove(@text_xs, @x_scale, 4)                       'retain high-level text data
+ 
+  setcommand(_textmode, @x_scale)                       'set text mode
+
+
+PUB box(x, y, box_width, box_height) | x2, y2, pmin, pmax 
+
+'' Draw a box with round/square corners, according to pixel width
+''
+''   x,y            - box left, box bottom
+
+  if box_width > pixel_width and box_height > pixel_width
+
+    pmax := pixel_width - (pmin := pixel_width >> 1)    'get pixel-half-min and pixel-half-max
+
+    x += pmin                                           'adjust coordinates to accomodate width
+    y += pmin
+    x2 := x + box_width - 1 - pixel_width
+    y2 := y + box_height - 1 - pixel_width
+
+    plot(x, y)                                          'plot round/square corners
+    plot(x, y2)
+    plot(x2, y)
+    plot(x2, y2)
+
+    fill(x, y2 + pmax, 0, (x2 - x) << 16, 0, 0, pmax)   'fill gaps
+    fill(x, y, 0, (x2 - x) << 16, 0, 0, pmin)
+    fill(x - pmin, y2, 0, (x2 - x + pixel_width) << 16, 0, 0, y2 - y)
+
+
+PUB quad(x1, y1, x2, y2, x3, y3, x4, y4)
+
+'' Draw a solid quadrilateral
+'' vertices must be ordered clockwise or counter-clockwise
+
+  tri(x1, y1, x2, y2, x3, y3)                           'draw two triangle to make 4-sides polygon
+  tri(x3, y3, x4, y4, x1, y1)
+
+
+PUB tri(x1, y1, x2, y2, x3, y3) | xy[2]
+
+'' Draw a solid triangle
+
+' reorder vertices by descending y
+
+  case (y1 => y2) & %100 | (y2 => y3) & %010 | (y1 => y3) & %001
+    %000:
+      longmove(@xy, @x1, 2)
+      longmove(@x1, @x3, 2)
+      longmove(@x3, @xy, 2)
+    %010:
+      longmove(@xy, @x1, 2)
+      longmove(@x1, @x2, 4)
+      longmove(@x3, @xy, 2)
+    %011:
+      longmove(@xy, @x1, 2)
+      longmove(@x1, @x2, 2)
+      longmove(@x2, @xy, 2)
+    %100:
+      longmove(@xy, @x3, 2)
+      longmove(@x2, @x1, 4)
+      longmove(@x1, @xy, 2)
+    %101:
+      longmove(@xy, @x2, 2)
+      longmove(@x2, @x3, 2)
+      longmove(@x3, @xy, 2)
+
+' draw triangle
+
+  fill(x1, y1, (x3 - x1) << 16 / (y1 - y3 + 1), (x2 - x1) << 16 / (y1 - y2 + 1), (x3 - x2) << 16 / (y2 - y3 + 1), y1 - y2, y1 - y3)
+
+
+PUB finish
+
+'' Wait for any current graphics command to finish
+'' use this to insure that it is safe to manually manipulate the bitmap
+
+  setcommand(_loop, 0)                                  'make sure last command finished
+
+
+PRI fill(x, y, da, db, db2, linechange, lines_minus_1)
+
+  setcommand(_fill, @x)
+
+
+PRI justify(string_ptr, justptr) | x
+
+  x := (strsize(string_ptr) - 1) * text_xs * text_sp + text_xs * 5 - 1
+  long[justptr] := -lookupz(text_just >> 2 & 3: 0, x >> 1, x, 0)
+  long[justptr][1] := -lookupz(text_just & 3: 0, text_ys << 3, text_ys << 4, 0)
+
+
+PRI setcommand(cmd, argptr)
+
+  command := cmd << 16 + argptr                         'write command and pointer
+  repeat while command                                  'wait for command to be cleared, signifying receipt
+
+
+CON
+
+  ' Vector font primitives
+
+  xa0   = %000 << 0             'x line start / arc center
+  xa1   = %001 << 0
+  xa2   = %010 << 0
+  xa3   = %011 << 0
+  xa4   = %100 << 0
+  xa5   = %101 << 0
+  xa6   = %110 << 0
+  xa7   = %111 << 0
+
+  ya0   = %0000 << 3            'y line start / arc center
+  ya1   = %0001 << 3
+  ya2   = %0010 << 3
+  ya3   = %0011 << 3
+  ya4   = %0100 << 3
+  ya5   = %0101 << 3
+  ya6   = %0110 << 3
+  ya7   = %0111 << 3
+  ya8   = %1000 << 3
+  ya9   = %1001 << 3
+  yaA   = %1010 << 3
+  yaB   = %1011 << 3
+  yaC   = %1100 << 3
+  yaD   = %1101 << 3
+  yaE   = %1110 << 3
+  yaF   = %1111 << 3
+
+  xb0   = %000 << 7             'x line end
+  xb1   = %001 << 7
+  xb2   = %010 << 7
+  xb3   = %011 << 7
+  xb4   = %100 << 7
+  xb5   = %101 << 7
+  xb6   = %110 << 7
+  xb7   = %111 << 7
+
+  yb0   = %0000 << 10           'y line end
+  yb1   = %0001 << 10
+  yb2   = %0010 << 10
+  yb3   = %0011 << 10
+  yb4   = %0100 << 10
+  yb5   = %0101 << 10
+  yb6   = %0110 << 10
+  yb7   = %0111 << 10
+  yb8   = %1000 << 10
+  yb9   = %1001 << 10
+  ybA   = %1010 << 10
+  ybB   = %1011 << 10
+  ybC   = %1100 << 10
+  ybD   = %1101 << 10
+  ybE   = %1110 << 10
+  ybF   = %1111 << 10
+
+  ax1   = %0 << 7               'x arc radius
+  ax2   = %1 << 7
+
+  ay1   = %00 << 8              'y arc radius
+  ay2   = %01 << 8
+  ay3   = %10 << 8
+  ay4   = %11 << 8
+
+  a0    = %0000 << 10           'arc start/length
+  a1    = %0001 << 10           'bits[1..0] = start (0..3 = 0°, 90°, 180°, 270°)
+  a2    = %0010 << 10           'bits[3..2] = length (0..3 = 360°, 270°, 180°, 90°)
+  a3    = %0011 << 10
+  a4    = %0100 << 10
+  a5    = %0101 << 10
+  a6    = %0110 << 10
+  a7    = %0111 << 10
+  a8    = %1000 << 10
+  a9    = %1001 << 10
+  aA    = %1010 << 10
+  aB    = %1011 << 10
+  aC    = %1100 << 10
+  aD    = %1101 << 10
+  aE    = %1110 << 10
+  aF    = %1111 << 10
+
+  fline = %0 << 14              'line command
+  farc  = %1 << 14              'arc command
+
+  more  = %1 << 15              'another arc/line
+
+
+DAT
+
+' Color codes
+
+colors  long    %%0000000000000000
+        long    %%1111111111111111
+        long    %%2222222222222222
+        long    %%3333333333333333
+
+' Round pixel recipes
+
+pixels  byte    %00000000,%00000000,%00000000,%00000000         '0,1,2,3
+        byte    %00000000,%00000000,%00000010,%00000101         '4,5,6,7
+        byte    %00001010,%00001010,%00011010,%00011010         '8,9,A,B
+        byte    %00110100,%00111010,%01110100,%01110100         'C,D,E,F
+
+' Vector font - standard ascii characters ($21-$7E)
+
+font    word    fline + xa2 + yaC + xb2 + yb7 + more            '!
+        word    fline + xa2 + ya5 + xb2 + yb4
+
+        word    fline + xa1 + yaD + xb1 + ybC + more            '"
+        word    fline + xa3 + yaD + xb3 + ybC
+
+        word    fline + xa1 + yaA + xb1 + yb6 + more            '#
+        word    fline + xa3 + yaA + xb3 + yb6 + more
+        word    fline + xa0 + ya9 + xb4 + yb9 + more
+        word    fline + xa0 + ya7 + xb4 + yb7
+
+        word    farc + xa2 + ya9 + a9 + ax2 + ay1 + more        '$
+        word    farc + xa2 + ya7 + aB + ax2 + ay1 + more
+        word    fline + xa0 + ya6 + xb2 + yb6 + more
+        word    fline + xa2 + yaA + xb4 + ybA + more
+        word    fline + xa2 + yaA + xb2 + ybB + more
+        word    fline + xa2 + ya6 + xb2 + yb5
+
+        word    farc + xa1 + yaA + a0 + ax1 + ay1 + more        '%
+        word    farc + xa3 + ya6 + a0 + ax1 + ay1 + more
+        word    fline + xa0 + ya6 + xb4 + ybA
+
+        word    farc + xa2 + yaA + a7 + ax1 + ay1 + more        '&
+        word    farc + xa2 + ya7 + a5 + ax2 + ay2 + more
+        word    fline + xa1 + yaA + xb4 + yb5
+
+        word    fline + xa2 + yaD + xb2 + ybC                   ' '
+
+        word    farc + xa3 + ya9 + aD + ax1 + ay4 + more        '(
+        word    farc + xa3 + ya7 + aE + ax1 + ay4 + more
+        word    fline + xa2 + ya7 + xb2 + yb9
+
+        word    farc + xa1 + ya9 + aC + ax1 + ay4 + more        ')
+        word    farc + xa1 + ya7 + aF + ax1 + ay4 + more
+        word    fline + xa2 + ya7 + xb2 + yb9
+
+        word    fline + xa4 + ya6 + xb0 + ybA + more            '*
+        word    fline + xa0 + ya6 + xb4 + ybA + more
+        word    fline + xa2 + yaB + xb2 + yb5
+
+        word    fline + xa0 + ya8 + xb4 + yb8 + more            '+
+        word    fline + xa2 + yaA + xb2 + yb6
+
+        word    fline + xa2 + ya4 + xb1 + yb3                   ',
+
+        word    fline + xa0 + ya8 + xb4 + yb8                   '-
+
+        word    fline + xa2 + ya5 + xb2 + yb4                   '.
+
+        word    fline + xa0 + ya4 + xb4 + ybC                   '/
+
+        word    farc + xa2 + ya8 + a0 + ax2 + ay4               '0
+
+        word    fline + xa0 + ya4 + xb4 + yb4 + more            '1
+        word    fline + xa2 + ya4 + xb2 + ybC + more
+        word    fline + xa0 + yaA + xb2 + ybC
+
+        word    farc + xa2 + yaA + a8 + ax2 + ay2 + more        '2
+        word    farc + xa2 + yaA + aF + ax2 + ay3 + more
+        word    farc + xa2 + ya4 + aD + ax2 + ay3 + more
+        word    fline + xa0 + ya4 + xb4 + yb4
+
+        word    farc + xa2 + yaA + a7 + ax2 + ay2 + more        '3
+        word    farc + xa2 + ya6 + a6 + ax2 + ay2
+
+        word    fline + xa2 + yaC + xb0 + yb7 + more            '4
+        word    fline + xa0 + ya7 + xb4 + yb7 + more
+        word    fline + xa3 + ya4 + xb3 + yb8
+
+        word    farc + xa2 + ya6 + aB + ax2 + ay2 + more        '5
+        word    fline + xa4 + yaC + xb0 + ybC + more
+        word    fline + xa0 + yaC + xb0 + yb8 + more
+        word    fline + xa0 + ya8 + xb2 + yb8 + more
+        word    fline + xa0 + ya4 + xb2 + yb4
+
+        word    farc + xa2 + ya6 + a0 + ax2 + ay2 + more        '6
+        word    farc + xa2 + ya8 + aD + ax2 + ay4 + more
+        word    fline + xa0 + ya6 + xb0 + yb8 + more
+        word    fline + xa2 + yaC + xb3 + ybC
+
+        word    fline + xa0 + yaC + xb4 + ybC + more            '7
+        word    fline + xa1 + ya4 + xb4 + ybC
+
+        word    farc + xa2 + ya6 + a0 + ax2 + ay2 + more        '8
+        word    farc + xa2 + yaA + a0 + ax2 + ay2
+
+        word    farc + xa2 + yaA + a0 + ax2 + ay2 + more        '9
+        word    farc + xa2 + ya8 + aF + ax2 + ay4 + more
+        word    fline + xa4 + ya8 + xb4 + ybA + more
+        word    fline + xa1 + ya4 + xb2 + yb4
+
+        word    fline + xa2 + ya6 + xb2 + yb7 + more            ':
+        word    fline + xa2 + yaA + xb2 + yb9
+
+        word    fline + xa2 + ya4 + xb1 + yb3 + more            ';
+        word    fline + xa2 + ya8 + xb2 + yb7
+
+        word    fline + xa0 + ya8 + xb4 + ybA + more            '<
+        word    fline + xa0 + ya8 + xb4 + yb6
+
+        word    fline + xa0 + yaA + xb4 + ybA + more            '=
+        word    fline + xa0 + ya6 + xb4 + yb6
+
+        word    fline + xa4 + ya8 + xb0 + ybA + more            '>
+        word    fline + xa4 + ya8 + xb0 + yb6
+
+        word    farc + xa2 + yaB + a8 + ax2 + ay1 + more        '?
+        word    farc + xa3 + yaB + aF + ax1 + ay2 + more
+        word    farc + xa3 + ya7 + aD + ax1 + ay2 + more
+        word    fline + xa2 + ya5 + xb2 + yb4
+
+        word    farc + xa2 + ya8 + a0 + ax1 + ay1 + more        '@
+        word    farc + xa2 + ya8 + a4 + ax2 + ay3 + more
+        word    farc + xa3 + ya8 + aF + ax1 + ay1 + more
+        word    farc + xa2 + ya6 + aF + ax2 + ay1 + more
+        word    fline + xa3 + ya7 + xb3 + yb9
+
+        word    farc + xa2 + yaA + a8 + ax2 + ay2 + more        'A
+        word    fline + xa0 + ya4 + xb0 + ybA + more
+        word    fline + xa4 + ya4 + xb4 + ybA + more
+        word    fline + xa0 + ya8 + xb4 + yb8
+
+        word    farc + xa2 + yaA + aB + ax2 + ay2 + more        'B
+        word    farc + xa2 + ya6 + aB + ax2 + ay2 + more
+        word    fline + xa0 + ya4 + xb0 + ybC + more
+        word    fline + xa0 + ya4 + xb2 + yb4 + more
+        word    fline + xa0 + ya8 + xb2 + yb8 + more
+        word    fline + xa0 + yaC + xb2 + ybC
+
+        word    farc + xa2 + yaA + a8 + ax2 + ay2 + more        'C
+        word    farc + xa2 + ya6 + aA + ax2 + ay2 + more
+        word    fline + xa0 + ya6 + xb0 + ybA
+
+        word    farc + xa2 + yaA + aC + ax2 + ay2 + more        'D
+        word    farc + xa2 + ya6 + aF + ax2 + ay2 + more
+        word    fline + xa0 + ya4 + xb0 + ybC + more
+        word    fline + xa4 + ya6 + xb4 + ybA + more
+        word    fline + xa0 + ya4 + xb2 + yb4 + more
+        word    fline + xa0 + yaC + xb2 + ybC
+
+        word    fline + xa0 + ya4 + xb0 + ybC + more            'E
+        word    fline + xa0 + ya4 + xb4 + yb4 + more
+        word    fline + xa0 + ya8 + xb3 + yb8 + more
+        word    fline + xa0 + yaC + xb4 + ybC
+
+        word    fline + xa0 + ya4 + xb0 + ybC + more            'F
+        word    fline + xa0 + ya8 + xb3 + yb8 + more
+        word    fline + xa0 + yaC + xb4 + ybC
+
+        word    farc + xa2 + yaA + a8 + ax2 + ay2 + more        'G
+        word    farc + xa2 + ya6 + aA + ax2 + ay2 + more
+        word    fline + xa0 + ya6 + xb0 + ybA + more
+        word    fline + xa4 + ya4 + xb4 + yb7 + more
+        word    fline + xa3 + ya7 + xb4 + yb7
+
+        word    fline + xa0 + ya4 + xb0 + ybC + more            'H
+        word    fline + xa4 + ya4 + xb4 + ybC + more
+        word    fline + xa0 + ya8 + xb4 + yb8
+
+        word    fline + xa2 + ya4 + xb2 + ybC + more            'I
+        word    fline + xa0 + ya4 + xb4 + yb4 + more
+        word    fline + xa0 + yaC + xb4 + ybC
+
+        word    farc + xa2 + ya6 + aA + ax2 + ay2 + more        'J
+        word    fline + xa4 + ya6 + xb4 + ybC
+
+        word    fline + xa0 + ya4 + xb0 + ybC + more            'K
+        word    fline + xa4 + yaC + xb0 + yb8 + more
+        word    fline + xa4 + ya4 + xb0 + yb8
+
+        word    fline + xa0 + ya4 + xb0 + ybC + more            'L
+        word    fline + xa0 + ya4 + xb4 + yb4
+
+        word    fline + xa0 + ya4 + xb0 + ybC + more            'M
+        word    fline + xa4 + ya4 + xb4 + ybC + more
+        word    fline + xa2 + ya8 + xb0 + ybC + more
+        word    fline + xa2 + ya8 + xb4 + ybC
+
+        word    fline + xa0 + ya4 + xb0 + ybC + more            'N
+        word    fline + xa4 + ya4 + xb4 + ybC + more
+        word    fline + xa4 + ya4 + xb0 + ybC
+
+        word    farc + xa2 + yaA + a8 + ax2 + ay2 + more        '0
+        word    farc + xa2 + ya6 + aA + ax2 + ay2 + more
+        word    fline + xa0 + ya6 + xb0 + ybA + more
+        word    fline + xa4 + ya6 + xb4 + ybA
+
+        word    farc + xa2 + yaA + aB + ax2 + ay2 + more        'P
+        word    fline + xa0 + ya4 + xb0 + ybC + more
+        word    fline + xa0 + ya8 + xb2 + yb8 + more
+        word    fline + xa0 + yaC + xb2 + ybC
+
+        word    farc + xa2 + yaA + a8 + ax2 + ay2 + more        'Q
+        word    farc + xa2 + ya6 + aA + ax2 + ay2 + more
+        word    fline + xa0 + ya6 + xb0 + ybA + more
+        word    fline + xa4 + ya6 + xb4 + ybA + more
+        word    fline + xa2 + ya6 + xb4 + yb3
+
+        word    farc + xa2 + yaA + aB + ax2 + ay2 + more        'R
+        word    fline + xa0 + ya4 + xb0 + ybC + more
+        word    fline + xa0 + ya8 + xb2 + yb8 + more
+        word    fline + xa0 + yaC + xb2 + ybC + more
+        word    fline + xa4 + ya4 + xb2 + yb8
+
+        word    farc + xa2 + yaA + a4 + ax2 + ay2 + more        'S
+        word    farc + xa2 + ya6 + a6 + ax2 + ay2
+
+        word    fline + xa2 + ya4 + xb2 + ybC + more            'T
+        word    fline + xa0 + yaC + xb4 + ybC
+
+        word    farc + xa2 + ya6 + aA + ax2 + ay2 + more        'U
+        word    fline + xa0 + ya6 + xb0 + ybC + more
+        word    fline + xa4 + ya6 + xb4 + ybC
+
+        word    fline + xa2 + ya4 + xb0 + ybC + more            'V
+        word    fline + xa2 + ya4 + xb4 + ybC
+
+        word    fline + xa0 + yaC + xb0 + yb4 + more            'W
+        word    fline + xa4 + yaC + xb4 + yb4 + more
+        word    fline + xa2 + ya8 + xb0 + yb4 + more
+        word    fline + xa2 + ya8 + xb4 + yb4
+
+        word    fline + xa4 + ya4 + xb0 + ybC + more            'X
+        word    fline + xa0 + ya4 + xb4 + ybC
+
+        word    fline + xa0 + yaC + xb2 + yb8 + more            'Y
+        word    fline + xa4 + yaC + xb2 + yb8 + more
+        word    fline + xa2 + ya4 + xb2 + yb8
+
+        word    fline + xa0 + yaC + xb4 + ybC + more            'Z
+        word    fline + xa0 + ya4 + xb4 + ybC + more
+        word    fline + xa0 + ya4 + xb4 + yb4
+
+        word    fline + xa2 + yaD + xb2 + yb3 + more            '[
+        word    fline + xa2 + yaD + xb4 + ybD + more
+        word    fline + xa2 + ya3 + xb4 + yb3
+
+        word    fline + xa4 + ya4 + xb0 + ybC                   '\
+
+        word    fline + xa2 + yaD + xb2 + yb3 + more            '[
+        word    fline + xa2 + yaD + xb0 + ybD + more
+        word    fline + xa2 + ya3 + xb0 + yb3
+
+        word    fline + xa2 + yaA + xb0 + yb6 + more            '^
+        word    fline + xa2 + yaA + xb4 + yb6
+
+        word    fline + xa0 + ya1 + xa4 + yb1                   '_
+
+        word    fline + xa1 + ya9 + xb3 + yb7                   '`
+
+        word    farc + xa2 + ya6 + a0 + ax2 + ay2 + more        'a
+        word    fline + xa4 + ya4 + xb4 + yb8
+
+        word    farc + xa2 + ya6 + a0 + ax2 + ay2 + more        'b
+        word    fline + xa0 + ya4 + xb0 + ybC
+
+        word    farc + xa2 + ya6 + a9 + ax2 + ay2 + more        'c
+        word    fline + xa2 + ya4 + xb4 + yb4 + more
+        word    fline + xa2 + ya8 + xb4 + yb8
+
+        word    farc + xa2 + ya6 + a0 + ax2 + ay2 + more        'd
+        word    fline + xa4 + ya4 + xb4 + ybC
+
+        word    farc + xa2 + ya6 + a4 + ax2 + ay2 + more        'e
+        word    fline + xa0 + ya6 + xb4 + yb6 + more
+        word    fline + xa2 + ya4 + xb4 + yb4
+
+        word    farc + xa4 + yaA + aD + ax2 + ay2 + more        'f
+        word    fline + xa0 + ya8 + xb4 + yb8 + more
+        word    fline + xa2 + ya4 + xb2 + ybA
+
+        word    farc + xa2 + ya6 + a0 + ax2 + ay2 + more        'g
+        word    farc + xa2 + ya3 + aF + ax2 + ay2 + more
+        word    fline + xa4 + ya3 + xb4 + yb8 + more
+        word    fline + xa1 + ya1 + xb2 + yb1
+
+        word    farc + xa2 + ya6 + a8 + ax2 + ay2 + more        'h
+        word    fline + xa0 + ya4 + xb0 + ybC + more
+        word    fline + xa4 + ya4 + xb4 + yb6
+
+        word    fline + xa1 + ya4 + xb3 + yb4 + more            'i
+        word    fline + xa2 + ya4 + xb2 + yb8 + more
+        word    fline + xa1 + ya8 + xb2 + yb8 + more
+        word    fline + xa2 + yaB + xb2 + ybA
+
+        word    farc + xa0 + ya3 + aF + ax2 + ay2 + more        'j
+        word    fline + xa2 + ya3 + xb2 + yb8 + more
+        word    fline + xa1 + ya8 + xb2 + yb8 + more
+        word    fline + xa2 + yaB + xb2 + ybA
+
+        word    fline + xa0 + ya4 + xb0 + ybC + more            'k
+        word    fline + xa0 + ya6 + xb2 + yb6 + more
+        word    fline + xa2 + ya6 + xb4 + yb8 + more
+        word    fline + xa2 + ya6 + xb4 + yb4
+
+        word    fline + xa1 + ya4 + xb3 + yb4 + more            'l
+        word    fline + xa2 + ya4 + xb2 + ybC + more
+        word    fline + xa1 + yaC + xb2 + ybC
+
+        word    farc + xa1 + ya7 + a8 + ax1 + ay1 + more        'm
+        word    farc + xa3 + ya7 + a8 + ax1 + ay1 + more
+        word    fline + xa0 + ya4 + xb0 + yb8 + more
+        word    fline + xa2 + ya4 + xb2 + yb7 + more
+        word    fline + xa4 + ya4 + xb4 + yb7
+
+        word    farc + xa2 + ya6 + a8 + ax2 + ay2 + more        'n
+        word    fline + xa0 + ya4 + xb0 + yb8 + more
+        word    fline + xa4 + ya4 + xb4 + yb6
+
+        word    farc + xa2 + ya6 + a0 + ax2 + ay2               'o
+
+        word    farc + xa2 + ya6 + a0 + ax2 + ay2 + more        'p
+        word    fline + xa0 + ya1 + xb0 + yb8
+
+        word    farc + xa2 + ya6 + a0 + ax2 + ay2 + more        'q
+        word    fline + xa4 + ya1 + xb4 + yb8
+
+        word    farc + xa2 + ya7 + a8 + ax2 + ay1 + more        'r
+        word    fline + xa0 + ya4 + xb0 + yb8
+
+        word    farc + xa2 + ya7 + a9 + ax2 + ay1 + more        's
+        word    farc + xa2 + ya5 + aB + ax2 + ay1 + more
+        word    fline + xa0 + ya4 + xb2 + yb4 + more
+        word    fline + xa2 + ya8 + xb4 + yb8
+
+        word    farc + xa4 + ya6 + aE + ax2 + ay2 + more        't
+        word    fline + xa0 + ya8 + xb4 + yb8 + more
+        word    fline + xa2 + ya6 + xb2 + ybA
+
+        word    farc + xa2 + ya6 + aA + ax2 + ay2 + more        'u
+        word    fline + xa0 + ya6 + xb0 + yb8 + more
+        word    fline + xa4 + ya4 + xb4 + yb8
+
+        word    fline + xa0 + ya8 + xb2 + yb4 + more            'v
+        word    fline + xa4 + ya8 + xb2 + yb4
+
+        word    farc + xa1 + ya5 + aA + ax1 + ay1 + more        'w
+        word    farc + xa3 + ya5 + aA + ax1 + ay1 + more
+        word    fline + xa0 + ya5 + xb0 + yb8 + more
+        word    fline + xa2 + ya5 + xb2 + yb6 + more
+        word    fline + xa4 + ya5 + xb4 + yb8
+
+        word    fline + xa0 + ya8 + xb4 + yb4 + more            'x
+        word    fline + xa0 + ya4 + xb4 + yb8
+
+        word    farc + xa2 + ya6 + aA + ax2 + ay2 + more        'y
+        word    farc + xa2 + ya3 + aF + ax2 + ay2 + more
+        word    fline + xa4 + ya3 + xb4 + yb8 + more
+        word    fline + xa0 + ya6 + xb0 + yb8 + more
+        word    fline + xa1 + ya1 + xb2 + yb1
+
+        word    fline + xa0 + ya8 + xb4 + yb8 + more            'z
+        word    fline + xa4 + ya8 + xb0 + yb4 + more
+        word    fline + xa0 + ya4 + xb4 + yb4
+
+        word    farc + xa3 + yaA + aD + ax1 + ay3 + more        '{
+        word    farc + xa1 + ya6 + aC + ax1 + ay2 + more
+        word    farc + xa1 + yaA + aF + ax1 + ay2 + more
+        word    farc + xa3 + ya6 + aE + ax1 + ay3
+
+        word    fline + xa2 + ya3 + xb2 + ybD                   '|
+
+        word    farc + xa1 + yaA + aC + ax1 + ay3 + more        '}
+        word    farc + xa3 + ya6 + aD + ax1 + ay2 + more
+        word    farc + xa3 + yaA + aE + ax1 + ay2 + more
+        word    farc + xa1 + ya6 + aF + ax1 + ay3
+
+        word    farc + xa1 + ya8 + a8 + ax1 + ay1 + more        '~
+        word    farc + xa3 + ya8 + aA + ax1 + ay1
+
+' Vector font - custom characters ($7F+)
+
+        word    fline + xa2 + ya9 + xb0 + yb4 + more            'delta
+        word    fline + xa2 + ya9 + xb4 + yb4 + more
+        word    fline + xa0 + ya4 + xb4 + yb4
+
+        word    farc + xa2 + ya7 + a8 + ax2 + ay2 + more        'omega
+        word    farc + xa1 + ya7 + aE + ax1 + ay2 + more
+        word    farc + xa3 + ya7 + aF + ax1 + ay2 + more
+        word    fline + xa1 + ya5 + xb1 + yb4 + more
+        word    fline + xa3 + ya5 + xb3 + yb4 + more
+        word    fline + xa0 + ya4 + xb1 + yb4 + more
+        word    fline + xa4 + ya4 + xb3 + yb4
+
+        word    farc + xa2 + ya8 + a0 + ax1 + ay1               'bullet
+
+CON     fx = 3  'number of custom characters
+
+DAT
+
+'*************************************
+'* Assembly language graphics driver *
+'*************************************
+
+                        org
+'
+'
+' Graphics driver - main loop
+'
+loop                    rdlong  t1,par          wz      'wait for command
+        if_z            jmp     #loop
+
+                        movd    :arg,#arg0              'get 8 arguments
+                        mov     t2,t1
+                        mov     t3,#8
+:arg                    rdlong  arg0,t2
+                        add     :arg,d0
+                        add     t2,#4
+                        djnz    t3,#:arg
+
+                        wrlong  zero,par                'zero command to signify received
+
+                        call    #setd                   'set dx,dy from arg0,arg1
+
+                        ror     t1,#16+2                'lookup command address
+                        add     t1,#jumps
+                        movs    :table,t1
+                        rol     t1,#2
+                        shl     t1,#3
+:table                  mov     t2,0
+                        shr     t2,t1
+                        and     t2,#$FF
+                        jmp     t2                      'jump to command
+
+
+jumps                   byte    0                       '0
+                        byte    setup_                  '1
+                        byte    color_                  '2
+                        byte    width_                  '3
+                        byte    plot_                   '4
+                        byte    line_                   '5
+                        byte    arc_                    '6
+                        byte    vec_                    '7
+                        byte    vecarc_                 '8
+                        byte    pix_                    '9
+                        byte    pixarc_                 'A
+                        byte    text_                   'B
+                        byte    textarc_                'C
+                        byte    textmode_               'D
+                        byte    fill_                   'E
+                        byte    loop                    'F
+'
+'
+' setup(x_tiles, y_tiles*16, x_origin, y_origin, base_ptr)  bases_ptr, slices_ptr
+'
+setup_                  mov     xlongs,arg0             'set xlongs, ylongs
+                        mov     ylongs,arg1
+                        mov     xorigin,arg2            'set xorigin, yorigin
+                        mov     yorigin,arg3
+                        mov     basesptr,arg5           'set pointers
+                        mov     slicesptr,arg6
+
+                        jmp     #loop
+'
+'
+' color(c)
+'
+color_                  mov     pcolor,arg0             'set pixel color
+
+                        jmp     #loop
+'
+'
+' width(w)  pixel_passes
+'
+width_                  mov     pwidth,arg0             'set pixel width
+                        mov     passes,arg1             'set pixel passes
+
+                        jmp     #loop
+'
+'
+' plot(x, y)
+'
+plot_                   call    #plotd
+
+                        jmp     #loop
+'
+'
+' line(x, y)
+'
+line_                   call    #linepd
+
+                        jmp     #loop
+'
+'
+' arc(x, y, xr, yr, angle, anglestep, iterations, mode)
+'
+arc_                    and     arg7,#3                 'limit mode
+
+:loop                   call    #arca                   'get arc dx,dy
+
+                        cmp     arg7,#1         wz      'if not mode 1, set px,py
+        if_nz           mov     px,dx
+        if_nz           mov     py,dy
+
+                        tjz     arg6,#loop              'if no points exit with new px,py
+
+                        cmp     arg7,#3         wz      'if mode 3, set center
+        if_z            call    #setd
+
+                        test    arg7,#1         wz      'if mode 0 or 2, plot point
+        if_z            call    #plotp
+
+                        test    arg7,#1         wz      'if mode 1 or 3, plot line
+        if_nz           call    #linepd
+
+                        cmp     arg7,#2         wz      'if mode 2, set mode 1
+        if_z            mov     arg7,#1
+
+                        add     arg4,arg5               'step angle
+                        djnz    arg6,#:loop             'loop if more iterations
+
+                        jmp     #loop
+'
+'
+' vec(x, y, vecscale, vecangle, vecdef_ptr)
+' vecarc(x, y, xr, yr, angle, vecscale, vecangle, vecdef_ptr)
+'
+' vecdef:       word    $8000/$4000+angle       'vector mode + 13-bit angle (mode: $4000=plot, $8000=line)
+'               word    length                  'vector length
+'               ...                             'more vectors
+'               ...
+'               word    0                       'end of definition
+'
+vecarc_                 call    #arcmod
+
+vec_                    tjz     arg2,#loop              'if scale 0, exit
+
+:loop                   rdword  t7,arg4         wz      'get vector mode+angle
+                        add     arg4,#2
+
+        if_z            jmp     #loop                   'if mode+angle 0, exit
+
+                        rdword  t1,arg4                 'get vector length
+                        add     arg4,#2
+
+                        abs     t2,arg2         wc      'add/sub vector angle to/from angle
+                        mov     t6,arg3
+                        sumc    t6,t7
+
+                        call    #multiply               'multiply length by scale
+                        add     t1,#$80                 'round up 1/2 lsb
+                        shr     t1,#8
+
+                        mov     t4,t1                   'get arc dx,dy
+                        mov     t5,t1
+                        call    #arcd
+
+                        test    t7,h8000        wc      'plot pixel or draw line?
+        if_nc           call    #plotd
+                        test    t7,h8000        wc
+        if_c            call    #linepd
+
+                        jmp     #:loop                  'get next vector
+'
+'
+' pix(x, y, pixrot, pixdef_ptr)
+' pixarc(x, y, xr, yr, angle, pixrot, pixdef_ptr)
+'
+' pixdef:       word
+'               byte    xwords, ywords, xorigin, yorigin
+'               word    %%xxxxxxxx,%%xxxxxxxx
+'               word    %%xxxxxxxx,%%xxxxxxxx
+'               word    %%xxxxxxxx,%%xxxxxxxx
+'               ...
+'
+pixarc_                 call    #arcmod
+
+pix_                    mov     t6,pcolor               'save color
+
+                        mov     px,dx                   'get center into px,py
+                        mov     py,dy
+
+                        mov     sy,pwidth               'get actual pixel width
+                        add     sy,#1
+
+                        rdbyte  dx,arg3                 'get dimensions into dx,dy
+                        add     arg3,#1
+                        rdbyte  dy,arg3
+                        add     arg3,#1
+
+                        rdbyte  t1,arg3                 'get origin and adjust px,py
+                        add     arg3,#1
+                        rdbyte  t2,arg3
+                        add     arg3,#1
+                        neg     t2,t2
+                        sub     t2,#1
+                        add     t2,dy
+                        mov     t3,sy
+:adjust                 test    arg2,#%001      wz
+                        test    arg2,#%110      wc
+        if_z            sumnc   px,t1
+        if_nz           sumc    py,t1
+                        test    arg2,#%010      wc
+        if_nz           sumnc   px,t2
+        if_z            sumnc   py,t2
+                        djnz    t3,#:adjust
+
+:yline                  mov     sx,#0                   'plot entire pix
+                        mov     t3,dx
+:xword                  rdword  t4,arg3                 'read next pix word
+                        add     arg3,#2
+                        shl     t4,#16
+                        mov     t5,#8
+:xpixel                 rol     t4,#2                   'plot pixel within word
+                        test    t4,#1           wc      'set color
+                        muxc    pcolor,color1
+                        test    t4,#2           wc
+                        muxc    pcolor,color2   wz      '(z=1 if color=0)
+        if_nz           call    #plotp
+                        test    arg2,#%001      wz      'update px,py for next x
+                        test    arg2,#%110      wc
+        if_z            sumc    px,sy
+        if_nz           sumnc   py,sy
+                        add     sx,sy
+                        djnz    t5,#:xpixel             'another x pixel?
+                        djnz    t3,#:xword              'another x word?
+        if_z            sumnc   px,sx                   'update px,py for next y
+        if_nz           sumc    py,sx
+                        test    arg2,#%010      wc
+        if_nz           sumc    px,sy
+        if_z            sumc    py,sy
+                        djnz    dy,#:yline              'another y line?
+
+                        mov     pcolor,t6               'restore color
+
+                        jmp     #loop
+'
+'
+' text(x, y, @string) justx, justy
+' textarc(x, y, xr, yr, angle, @string) justx, justy
+'
+textarc_                call    #arcmod
+
+text_                   add     arg3,arg0               'add x into justx
+                        add     arg4,arg1               'add y into justy
+
+:chr                    rdbyte  t1,arg2         wz      'get chr
+                        add     arg2,#1
+
+        if_z            jmp     #loop                   'if 0, done
+
+                        sub     t1,#$21                 'if chr out of range, skip
+                        cmp     t1,#$7F-$21+fx  wc
+        if_nc           jmp     #:skip
+
+                        mov     arg5,fontptr            'scan font for chr definition
+:scan                   tjz     t1,#:def
+                        rdword  t2,arg5
+                        add     arg5,#2
+                        test    t2,h8000        wc
+        if_nc           sub     t1,#1
+                        jmp     #:scan
+
+:def                    rdword  t7,arg5                 'get font definition word
+                        add     arg5,#2
+
+                        call    #fontxy                 'extract initial x,y
+
+                        test    t7,#$80         wc      'arc or line?
+        if_nc           jmp     #:line
+
+
+                        mov     t2,textsx               'arc, extract x radius
+                        mov     t3,#%0001_0001_1
+                        call    #fontb
+                        mov     t4,t1
+
+                        mov     t2,textsy               'extract y radius
+                        mov     t3,#%0010_0011_1
+                        call    #fontb
+                        mov     t5,t1
+
+                        mov     t2,#1                   'extract starting angle
+                        mov     t3,#%0010_0011_0
+                        call    #fontb
+                        shl     t1,#11
+
+                        mov     t6,t1                   'extract angle sweep
+                        mov     t3,#%0010_0011_0
+                        call    #fontb
+                        neg     arg6,t1
+                        shl     arg6,#4
+                        add     arg6,#65
+
+                        call    #arcd                   'plot initial arc point
+                        call    #plotd
+
+:arc                    call    #arcd                   'connect subsequent arc points with lines
+                        call    #linepd
+                        add     t6,#$80
+                        djnz    arg6,#:arc
+
+                        jmp     #:more
+
+
+:line                   call    #plotd                  'line, plot initial x,y
+
+                        call    #fontxy                 'extract terminal x,y
+
+                        call    #linepd                 'draw line
+
+
+:more                   test    t7,#$02         wc      'more font definition?
+        if_c            jmp     #:def
+
+:skip                   mov     t1,textsp               'advance x to next chr position
+                        mov     t2,textsx
+                        call    #multiply
+                        add     arg3,t1
+
+                        jmp     #:chr                   'get next chr
+
+
+fontxy                  mov     t2,textsx               'extract x
+                        mov     t3,#%0011_0111_0
+                        call    #fontb
+                        mov     arg0,t1
+                        add     arg0,arg3
+
+                        mov     t2,textsy               'extract y
+                        mov     t3,#%0100_1111_0
+                        call    #fontb
+                        mov     arg1,t1
+                        add     arg1,arg4
+
+setd                    mov     dx,xorigin              'set dx,dy from arg0,arg1
+                        add     dx,arg0
+                        mov     dy,yorigin
+                        sub     dy,arg1
+setd_ret
+fontxy_ret              ret
+
+
+fontb                   mov     t1,t7                   'extract bitrange from font word
+                        shr     t3,#1           wc
+                        and     t1,t3
+        if_c            add     t1,#1
+                        shr     t3,#4
+                        shr     t7,t3
+
+                        shl     t1,#32-4                'multiply t1[3..0] by t2
+                        mov     t3,#4
+:loop                   shl     t1,#1           wc
+        if_c            add     t1,t2
+                        djnz    t3,#:loop
+
+fontb_ret               ret
+'
+'
+' textmode(x_scale, y_scale, spacing, justification)
+'
+textmode_               mov     textsx,arg0             'set text x scale
+                        mov     textsy,arg1             'set text y scale
+                        mov     textsp,arg2             'set text spacing
+
+                        jmp     #loop
+'
+'
+' fill(x, y, da, db, db2, linechange, lines_minus_1)
+'
+fill_                   shl     dx,#16                  'get left and right fractions
+                        or      dx,h8000
+                        mov     t1,dx
+
+                        mov     t2,xlongs               'get x pixels
+                        shl     t2,#4
+
+                        add     arg6,#1                 'pre-increment line counter
+
+:yloop                  add     dx,arg2                 'adjust left and right fractions
+                        add     t1,arg3
+
+                        cmps    dx,t1           wc      'get left and right integers
+        if_c            mov     base0,dx
+        if_c            mov     base1,t1
+        if_nc           mov     base0,t1
+        if_nc           mov     base1,dx
+                        sar     base0,#16
+                        sar     base1,#16
+
+                        cmps    base0,t2        wc      'left out of range?
+        if_c            cmps    hFFFFFFFF,base1 wc      'right out of range?
+        if_c            cmp     dy,ylongs       wc      'y out of range?
+        if_nc           jmp     #:skip                  'if any, skip
+
+                        mins    base0,#0                'limit left and right
+                        maxs    base1,t2        wc
+        if_nc           sub     base1,#1
+
+                        shl     base0,#1                'make left mask
+                        neg     mask0,#1
+                        shl     mask0,base0
+                        shr     base0,#5
+
+                        shl     base1,#1                'make right mask
+                        xor     base1,#$1E
+                        neg     mask1,#1
+                        shr     mask1,base1
+                        shr     base1,#5
+
+                        sub     base1,base0     wz      'ready long count
+                        add     base1,#1
+
+        if_z            and     mask0,mask1             'if single long, merge masks
+
+                        shl     base0,#1                'get long base
+                        add     base0,basesptr
+                        rdword  base0,base0
+                        shl     dy,#2
+                        add     base0,dy
+                        shr     dy,#2
+
+                        mov     bits0,mask0             'ready left mask
+:xloop                  mov     bits1,pcolor            'make color mask
+                        and     bits1,bits0
+                        rdlong  pass,base0              'read-modify-write long
+                        andn    pass,bits0
+                        or      pass,bits1
+                        wrlong  pass,base0
+                        shl     ylongs,#2               'advance to next long
+                        add     base0,ylongs
+                        shr     ylongs,#2
+                        cmp     base1,#2        wz      'one more?
+        if_nz           neg     bits0,#1                'if not, ready full mask
+        if_z            mov     bits0,mask1             'if one more, ready right mask
+                        djnz    base1,#:xloop           'loop if more longs
+
+:skip                   sub     arg5,#1         wc      'delta change?
+        if_c            mov     arg3,arg4               'if so, set new deltas
+:same
+                        add     dy,#1                   'adjust y
+                        djnz    arg6,#:yloop            'another y?
+
+                        jmp     #loop
+'
+'
+' Plot line from px,py to dx,dy
+'
+linepd                  cmps    dx,px           wc, wr  'get x difference
+                        negc    sx,#1                   'set x direction
+
+                        cmps    dy,py           wc, wr  'get y difference
+                        negc    sy,#1                   'set y direction
+
+                        abs     dx,dx                   'make differences absolute
+                        abs     dy,dy
+
+                        cmp     dx,dy           wc      'determine dominant axis
+        if_nc           tjz     dx,#:last               'if both differences 0, plot single pixel
+        if_nc           mov     count,dx                'set pixel count
+        if_c            mov     count,dy
+                        mov     ratio,count             'set initial ratio
+                        shr     ratio,#1
+        if_c            jmp     #:yloop                 'x or y dominant?
+
+
+:xloop                  call    #plotp                  'dominant x line
+                        add     px,sx
+                        sub     ratio,dy        wc
+        if_c            add     ratio,dx
+        if_c            add     py,sy
+                        djnz    count,#:xloop
+
+                        jmp     #:last                  'plot last pixel
+
+
+:yloop                  call    #plotp                  'dominant y line
+                        add     py,sy
+                        sub     ratio,dx        wc
+        if_c            add     ratio,dy
+        if_c            add     px,sx
+                        djnz    count,#:yloop
+
+:last                   call    #plotp                  'plot last pixel
+
+linepd_ret              ret
+'
+'
+' Plot pixel at px,py
+'
+plotd                   mov     px,dx                   'set px,py to dx,dy
+                        mov     py,dy
+
+plotp                   tjnz    pwidth,#wplot           'if width > 0, do wide plot
+
+                        mov     t1,px                   'compute pixel mask
+                        shl     t1,#1
+                        mov     mask0,#%11
+                        shl     mask0,t1
+                        shr     t1,#5
+
+                        cmp     t1,xlongs       wc      'if x or y out of bounds, exit
+        if_c            cmp     py,ylongs       wc
+        if_nc           jmp     #plotp_ret
+
+                        mov     bits0,pcolor            'compute pixel bits
+                        and     bits0,mask0
+
+                        shl     t1,#1                   'get address of pixel long
+                        add     t1,basesptr
+                        mov     t2,py
+                        rdword  t1,t1
+                        shl     t2,#2
+                        add     t1,t2
+
+                        rdlong  t2,t1                   'write pixel
+                        andn    t2,mask0
+                        or      t2,bits0
+                        wrlong  t2,t1
+plotp_ret
+plotd_ret               ret
+'
+'
+' Plot wide pixel
+'
+wplot                   mov     t1,py                   'if y out of bounds, exit
+                        add     t1,#7
+                        mov     t2,ylongs
+                        add     t2,#7+8
+                        cmp     t1,t2           wc
+        if_nc           jmp     #plotp_ret
+
+                        mov     t1,px                   'determine x long pair
+                        sub     t1,#8
+                        sar     t1,#4
+                        cmp     t1,xlongs       wc
+                        muxc    jumps,#%01              '(use jumps[1..0] to store writes)
+                        add     t1,#1
+                        cmp     t1,xlongs       wc
+                        muxc    jumps,#%10
+
+                        test    jumps,#%11      wz      'if x out of bounds, exit
+        if_z            jmp     #plotp_ret
+
+                        shl     t1,#1                   'get base pair
+                        add     t1,basesptr
+                        rdword  base1,t1
+                        sub     t1,#2
+                        rdword  base0,t1
+
+                        mov     t1,px                   'determine pair shifts
+                        shl     t1,#1
+                        movs    :shift1,t1
+                        xor     :shift1,#7<<1
+                        add     t1,#9<<1
+                        movs    :shift0,t1
+                        test    t1,#$F<<1       wz      '(account for special case)
+        if_z            andn    jumps,#%01
+
+                        mov     pass,#0                 'ready to plot slices
+                        mov     slice,slicesptr
+
+:loop                   rdlong  mask0,slice             'get next slice
+                        mov     mask1,mask0
+
+:shift0                 shl     mask0,#0                'position slice
+:shift1                 shr     mask1,#0
+
+                        mov     bits0,pcolor            'colorize slice
+                        and     bits0,mask0
+                        mov     bits1,pcolor
+                        and     bits1,mask1
+
+                        mov     t1,py                   'plot lower slice
+                        add     t1,pass
+                        cmp     t1,ylongs       wc
+        if_c            call    #wslice
+
+                        mov     t1,py                   'plot upper slice
+                        test    pwidth,#1       wc
+                        subx    t1,pass
+                        cmp     t1,ylongs       wc
+        if_c            call    #wslice
+
+                        add     slice,#4                'next slice
+                        add     pass,#1
+                        cmp     pass,passes     wz
+        if_nz           jmp     #:loop
+
+                        jmp     #plotp_ret
+'
+'
+' Plot wide pixel slice
+'
+wslice                  shl     t1,#2                   'ready long offset
+
+                        add     base0,t1                'plot left slice
+                        test    jumps,#%01      wc
+        if_c            rdlong  t2,base0
+        if_c            andn    t2,mask0
+        if_c            or      t2,bits0
+        if_c            wrlong  t2,base0
+
+                        add     base1,t1                'plot right slice
+                        test    jumps,#%10      wc
+        if_c            rdlong  t2,base1
+        if_c            andn    t2,mask1
+        if_c            or      t2,bits1
+        if_c            wrlong  t2,base1
+
+                        sub     base0,t1                'restore bases
+                        sub     base1,t1
+
+wslice_ret              ret
+'
+'
+' Get arc point from args and then move args 5..7 to 2..4
+'
+arcmod                  call    #arca                   'get arc using first 5 args
+
+                        mov     arg0,dx                 'set arg0,arg1
+                        sub     arg0,xorigin
+                        mov     arg1,yorigin
+                        sub     arg1,dy
+
+                        mov     arg2,arg5               'move args 5..7 to 2..4
+                        mov     arg3,arg6
+                        mov     arg4,arg7
+
+arcmod_ret              ret
+'
+'
+' Get arc dx,dy from arg0,arg1
+'
+'   in:         arg0,arg1 = center x,y
+'               arg2/t4 = x length
+'               arg3/t5 = y length
+'               arg4/t6 = 13-bit angle
+'
+'   out:        dx,dy = arc point
+'
+arca                    mov     t4,arg2                 'use args
+                        mov     t5,arg3
+                        mov     t6,arg4
+
+arcd                    call    #setd                   'reset dx,dy to arg0,arg1
+
+                        mov     t1,t6                   'get arc dx
+                        mov     t2,t4
+                        call    #polarx
+                        add     dx,t1
+
+                        mov     t1,t6                   'get arc dy
+                        mov     t2,t5
+                        call    #polary
+                        sub     dy,t1
+arcd_ret
+arca_ret                ret
+'
+'
+' Polar to cartesian
+'
+'   in:         t1 = 13-bit angle
+'               t2 = 16-bit length
+'
+'   out:        t1 = x|y
+'
+polarx                  add     t1,sine_90              'cosine, add 90° for sine lookup
+polary                  test    t1,sine_180     wz      'get sine quadrant 3|4 into nz
+                        test    t1,sine_90      wc      'get sine quadrant 2|4 into c
+                        negc    t1,t1                   'if sine quadrant 2|4, negate table offset
+                        or      t1,sine_table           'or in sine table address >> 1
+                        shl     t1,#1                   'shift left to get final word address
+                        rdword  t1,t1                   'read sine/cosine word
+                        call    #multiply               'multiply sine/cosine by length to get x|y
+                        add     t1,h8000                'add 1/2 lsb to round up x|y fraction
+                        shr     t1,#16                  'justify x|y integer
+                        negnz   t1,t1                   'if sine quadrant 3|4, negate x|y
+polary_ret
+polarx_ret              ret
+
+sine_90                 long    $0800                   '90° bit
+sine_180                long    $1000                   '180° bit
+sine_table              long    $E000 >> 1              'sine table address shifted right
+'
+'
+' Multiply
+'
+'   in:         t1 = 16-bit multiplicand (t1[31..16] must be 0)
+'               t2 = 16-bit multiplier
+'
+'   out:        t1 = 32-bit product
+'
+multiply                mov     t3,#16
+                        shl     t2,#16
+                        shr     t1,#1           wc
+
+:loop   if_c            add     t1,t2           wc
+                        rcr     t1,#1           wc
+                        djnz    t3,#:loop
+
+multiply_ret            ret
+'
+'
+' Defined data
+'
+zero                    long    0                       'constants
+d0                      long    $200
+h8000                   long    $8000
+hFFFFFFFF               long    $FFFFFFFF
+color1                  long    %%1111111111111111
+color2                  long    %%2222222222222222
+
+fontptr                 long    0                       'font pointer (set before cognew command)
+
+pcolor                  long    %%1111111111111111      'pixel color
+pwidth                  long    0                       'pixel width
+passes                  long    1                       'pixel passes
+textsx                  long    1                       'text scale x
+textsy                  long    1                       'text scale y
+textsp                  long    6                       'text spacing
+'
+'
+' Undefined data
+'
+t1                      res     1       'temps
+t2                      res     1
+t3                      res     1
+t4                      res     1
+t5                      res     1
+t6                      res     1
+t7                      res     1
+
+arg0                    res     1       'arguments passed from high-level
+arg1                    res     1
+arg2                    res     1
+arg3                    res     1
+arg4                    res     1
+arg5                    res     1
+arg6                    res     1
+arg7                    res     1
+
+basesptr                res     1       'pointers
+slicesptr               res     1
+
+xlongs                  res     1       'bitmap metrics
+ylongs                  res     1
+xorigin                 res     1
+yorigin                 res     1
+
+dx                      res     1       'line/plot coordinates
+dy                      res     1
+px                      res     1
+py                      res     1
+
+sx                      res     1       'line
+sy                      res     1
+count                   res     1
+ratio                   res     1
+
+pass                    res     1       'plot
+slice                   res     1
+base0                   res     1
+base1                   res     1
+mask0                   res     1
+mask1                   res     1
+bits0                   res     1
+bits1                   res     1
+
+{{
+
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │                                                            
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │ 
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}
\ No newline at end of file
diff --git a/samples/Propeller Spin/Inductor.spin b/samples/Propeller Spin/Inductor.spin
new file mode 100644
index 00000000..611a75fc
--- /dev/null
+++ b/samples/Propeller Spin/Inductor.spin	
@@ -0,0 +1,221 @@
+{{
+*****************************************
+* Inductive Sensor Demo v1.0            *
+* Author: Beau Schwabe                  *
+* Copyright (c) 2007 Parallax           *
+* See end of file for terms of use.     *
+*****************************************
+
+
+Test Circuit:
+
+      10pF   100K  1M
+FPin ───┳──┳── SDF(sigma-delta feedback)
+          │      ┣──── SDI(sigma-delta input)
+        L   100K
+                     
+         GND    GND  
+                                 
+
+Test Coils:
+
+Wire used was the "Radio Shack Special" GREEN (about 27 gauge)
+
+25T (Coke Can form)    = 2.1MHz
+15T (Coke Can form)    = 3.9MHz
+ 5T (Coke Can form)    = 5.3MHz
+50T (BIC pen form)     = 3.2MHz
+
+
+
+How does it work?
+
+Note: The reported resonate frequency is NOT the actual resonate LC frequency.  Instead it is where the voltage produced from
+      the LC circuit was clipped.  
+
+      In the example circuit below:
+      
+             C     L
+        A ────┳──── GND
+                │ 
+                B         
+
+      When you apply a small voltage at a specific frequency to an LC circuit (at point "A") that is at or near the resonate
+      frequency of LC, it is not uncommon to measure 10's or 100's of times the amount of voltage (at point "B") that you are
+      applying to the LC circuit. (at point "A")
+
+
+      In the "Test Circuit" above, point "B" passes through a diode which then basically feeds a divide by 2 voltage divider:
+
+              100K 100K
+        B ───┳── GND
+                  │
+                  C
+
+      ...So in order see the sigma-delta ADC "clip" the frequency sweep result, the output from the LC circuit only needs
+      to generate about 6.6 Volts above ground. (0.6V drop across the diode, and since the ADC is only sensitive to about
+      3V, it works out to be about 6.6V after the voltage divider.)
+
+
+      A typical magnitude plot of a frequency sweep applied to an LC circuit might look something like this:
+      
+                    *
+                    *
+                    *
+                    *
+                   * *
+                  *   *
+                 *     *
+               *         *
+             *             *
+       *****                 *****
+
+
+       ...With 'clipping' the pattern looks more like this:
+
+                  X****
+                 *     *
+               *         *
+             *             *
+       *****                 *****
+
+       ...The 'X' denotes the location of the reported resonate frequency. The reason this is slightly off is for
+       two reasons really. 1) lazy - I didn't want to fiddle with the voltage divider combo... adjusting so that the
+       "peak" was also where the ADC happened to "clip".  2) some benefit - When you apply a frequency to a tuned LC
+       circuit that's resonate frequency is the same as the applied frequency, the LC acts like a dead short.  A
+       situation not exactly great for Propeller I/O's
+
+       Now that we have that out of the way, what happens next?  How can we use this so called "coil" as a sensor?
+
+       If a frequency sweep is initially preformed to determine the resonate frequency clip point, then it just so
+       happens that adding additional "metal" (<- Does not need to be ferrous) causes the resonate frequency to shift
+       to a HIGHER frequency.
+
+       Once you determine the "clip" frequency and you use one of the available counters to constantly feed that
+       particular frequency back to the LC circuit, the resulting ADC output is proportional and somewhat linear when
+       metal objects are introduced to the coil.
+
+       Assume frequency increases from Left to Right.  With a slight resonate shift to the right, the ADC reports a
+       lower "de-tuned" value because the voltage magnitude no longer "clips" at the reported resonate frequency.
+       Typical ranges are full scale between 65535 (no metal) and 0 (metal saturation)
+
+ 
+                          X    *****
+                              *     *
+ ADC reports value here --> *         *
+                          *             *
+                    *****                 *****
+
+                     Slight shift to the right
+
+       I also made mention that the response is somewhat linear. As the LC resonance shifts and the ADC value begins
+       to lower, the slope is steepest near the "clip" point.  Therefore, the slightest shift results in larger value
+       changes.  Since the coil is actually the least sensitive to metal the further away it is (Law of squares) and
+       most sensitive to metal the closer it is, the resulting combination acts to linearize the output. I need to
+       point out that some LC combinations will exhibit plateaus and other anomalies caused by varying parasitic circuit
+       conditions that will affect the overall output, so a little bit of trial and error is necessary to get things
+       the way you want them.
+
+}}
+OBJ
+   Freq   : "Synth"
+   ADC    : "ADC"
+   gr     : "graphics"
+   Num    : "Numbers"
+CON
+  FPin =                        0
+
+  UpperFrequency =              6_000_000
+  LowerFrequency =              2_000_000
+
+  bitmap_base = $2000
+  display_base = $5000
+
+VAR
+    long              FMax, FTemp, FValue, Frequency
+    
+PUB demo
+    'start and setup graphics
+    gr.start
+    gr.setup(16, 12, 128, 96, bitmap_base)
+
+    FindResonateFrequency
+
+    DisplayInductorValue
+
+PUB DisplayInductorValue | X
+    Freq.Synth("A", FPin, FValue)
+    repeat
+      ADC.SigmaDelta(@FTemp)
+
+'**************************************** Graphics Option Start *********************************************
+      'clear bitmap
+      gr.clear
+      'draw text
+      gr.textmode(1,1,7,5)
+      gr.colorwidth(1,0)
+      gr.text(0,90,string("Inductive Propeller Sensor"))
+
+      gr.colorwidth(1,5)
+      X := (65535 - FTemp )*200/65535
+      gr.plot(-100+X,15)
+
+      gr.textmode(1,1,7,%0000)
+      gr.colorwidth(1,0)
+      gr.text(-100,-20,string("Resonate Frequency ="))
+      gr.text(35,-20,Num.ToStr(FValue,10))
+
+      gr.text(-100,-36,string("ADC Frequency Response ="))
+      gr.text(65,-36,Num.ToStr(FTemp,10))
+
+      'copy bitmap to display
+      gr.copy(display_base)
+'**************************************** Graphics Option Finish *********************************************      
+
+PUB FindResonateFrequency | P
+    dira[FPin]                  := 1
+    
+    FMax := 0
+    repeat Frequency from LowerFrequency to UpperFrequency step 1000
+      Freq.Synth("A", FPin, Frequency)
+      ADC.SigmaDelta(@FTemp)
+
+      if FTemp > FMax
+         FMax := FTemp
+         FValue := Frequency
+'**************************************** Graphics Option Start *********************************************
+      P := (Frequency - LowerFrequency)*100/(UpperFrequency - LowerFrequency)
+
+      gr.colorwidth(1,5)
+      gr.plot(0,0)
+      gr.line(P,0)
+      gr.colorwidth(3,5)
+      gr.line(100,0)
+
+      gr.colorwidth(2,0)
+      gr.plot(P,(FTemp/1024)+10)
+      gr.colorwidth(0,1)
+      gr.plot(P+1,5)
+      gr.line(P+1,50)
+
+      gr.copy(display_base)
+'**************************************** Graphics Option Finish *********************************************
+
+DAT
+{{
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}
\ No newline at end of file
diff --git a/samples/Propeller Spin/Keyboard.spin b/samples/Propeller Spin/Keyboard.spin
new file mode 100644
index 00000000..bb38d0ab
--- /dev/null
+++ b/samples/Propeller Spin/Keyboard.spin	
@@ -0,0 +1,736 @@
+''***************************************
+''*  PS/2 Keyboard Driver v1.0.1        *
+''*  Author: Chip Gracey                *
+''*  Copyright (c) 2004 Parallax, Inc.  *
+''*  See end of file for terms of use.  *
+''***************************************
+
+{-----------------REVISION HISTORY-----------------
+ v1.0.1 - Updated 6/15/2006 to work with Propeller Tool 0.96}
+ 
+VAR
+
+  long  cog
+
+  long  par_tail        'key buffer tail        read/write      (19 contiguous longs)
+  long  par_head        'key buffer head        read-only
+  long  par_present     'keyboard present       read-only
+  long  par_states[8]   'key states (256 bits)  read-only
+  long  par_keys[8]     'key buffer (16 words)  read-only       (also used to pass initial parameters)
+
+
+PUB start(dpin, cpin) : okay
+
+'' Start keyboard driver - starts a cog
+'' returns false if no cog available
+''
+''   dpin  = data signal on PS/2 jack
+''   cpin  = clock signal on PS/2 jack
+''
+''     use 100-ohm resistors between pins and jack
+''     use 10K-ohm resistors to pull jack-side signals to VDD
+''     connect jack-power to 5V, jack-gnd to VSS
+''
+'' all lock-keys will be enabled, NumLock will be initially 'on',
+'' and auto-repeat will be set to 15cps with a delay of .5s
+
+  okay := startx(dpin, cpin, %0_000_100, %01_01000)
+
+
+PUB startx(dpin, cpin, locks, auto) : okay
+
+'' Like start, but allows you to specify lock settings and auto-repeat
+''
+''   locks = lock setup
+''           bit 6 disallows shift-alphas (case set soley by CapsLock)
+''           bits 5..3 disallow toggle of NumLock/CapsLock/ScrollLock state
+''           bits 2..0 specify initial state of NumLock/CapsLock/ScrollLock
+''           (eg. %0_001_100 = disallow ScrollLock, NumLock initially 'on')
+''
+''   auto  = auto-repeat setup
+''           bits 6..5 specify delay (0=.25s, 1=.5s, 2=.75s, 3=1s)
+''           bits 4..0 specify repeat rate (0=30cps..31=2cps)
+''           (eg %01_00000 = .5s delay, 30cps repeat)
+
+  stop
+  longmove(@par_keys, @dpin, 4)
+  okay := cog := cognew(@entry, @par_tail) + 1
+
+
+PUB stop
+
+'' Stop keyboard driver - frees a cog
+
+  if cog
+    cogstop(cog~ -  1)
+  longfill(@par_tail, 0, 19)
+
+
+PUB present : truefalse
+
+'' Check if keyboard present - valid ~2s after start
+'' returns t|f
+
+  truefalse := -par_present
+
+
+PUB key : keycode
+
+'' Get key (never waits)
+'' returns key (0 if buffer empty)
+
+  if par_tail <> par_head
+    keycode := par_keys.word[par_tail]
+    par_tail := ++par_tail & $F
+
+
+PUB getkey : keycode
+
+'' Get next key (may wait for keypress)
+'' returns key
+
+  repeat until (keycode := key)
+
+
+PUB newkey : keycode
+
+'' Clear buffer and get new key (always waits for keypress)
+'' returns key
+
+  par_tail := par_head
+  keycode := getkey
+
+
+PUB gotkey : truefalse
+
+'' Check if any key in buffer
+'' returns t|f
+
+  truefalse := par_tail <> par_head
+
+
+PUB clearkeys
+
+'' Clear key buffer
+
+  par_tail := par_head
+
+
+PUB keystate(k) : state
+
+'' Get the state of a particular key
+'' returns t|f
+
+  state := -(par_states[k >> 5] >> k & 1)
+
+
+DAT
+
+'******************************************
+'* Assembly language PS/2 keyboard driver *
+'******************************************
+
+                        org
+'
+'
+' Entry
+'
+entry                   movd    :par,#_dpin             'load input parameters _dpin/_cpin/_locks/_auto
+                        mov     x,par
+                        add     x,#11*4
+                        mov     y,#4
+:par                    rdlong  0,x
+                        add     :par,dlsb
+                        add     x,#4
+                        djnz    y,#:par
+
+                        mov     dmask,#1                'set pin masks
+                        shl     dmask,_dpin
+                        mov     cmask,#1
+                        shl     cmask,_cpin
+
+                        test    _dpin,#$20      wc      'modify port registers within code
+                        muxc    _d1,dlsb
+                        muxc    _d2,dlsb
+                        muxc    _d3,#1
+                        muxc    _d4,#1
+                        test    _cpin,#$20      wc
+                        muxc    _c1,dlsb
+                        muxc    _c2,dlsb
+                        muxc    _c3,#1
+
+                        mov     _head,#0                'reset output parameter _head
+'
+'
+' Reset keyboard
+'
+reset                   mov     dira,#0                 'reset directions
+                        mov     dirb,#0
+
+                        movd    :par,#_present          'reset output parameters _present/_states[8]
+                        mov     x,#1+8
+:par                    mov     0,#0
+                        add     :par,dlsb
+                        djnz    x,#:par
+
+                        mov     stat,#8                 'set reset flag
+'
+'
+' Update parameters
+'
+update                  movd    :par,#_head             'update output parameters _head/_present/_states[8]
+                        mov     x,par
+                        add     x,#1*4
+                        mov     y,#1+1+8
+:par                    wrlong  0,x
+                        add     :par,dlsb
+                        add     x,#4
+                        djnz    y,#:par
+
+                        test    stat,#8         wc      'if reset flag, transmit reset command
+        if_c            mov     data,#$FF
+        if_c            call    #transmit
+'
+'
+' Get scancode
+'
+newcode                 mov     stat,#0                 'reset state
+
+:same                   call    #receive                'receive byte from keyboard
+
+                        cmp     data,#$83+1     wc      'scancode?
+
+        if_nc           cmp     data,#$AA       wz      'powerup/reset?
+        if_nc_and_z     jmp     #configure
+
+        if_nc           cmp     data,#$E0       wz      'extended?
+        if_nc_and_z     or      stat,#1
+        if_nc_and_z     jmp     #:same
+
+        if_nc           cmp     data,#$F0       wz      'released?
+        if_nc_and_z     or      stat,#2
+        if_nc_and_z     jmp     #:same
+
+        if_nc           jmp     #newcode                'unknown, ignore
+'
+'
+' Translate scancode and enter into buffer
+'
+                        test    stat,#1         wc      'lookup code with extended flag
+                        rcl     data,#1
+                        call    #look
+
+                        cmp     data,#0         wz      'if unknown, ignore
+        if_z            jmp     #newcode
+
+                        mov     t,_states+6             'remember lock keys in _states
+
+                        mov     x,data                  'set/clear key bit in _states
+                        shr     x,#5
+                        add     x,#_states
+                        movd    :reg,x
+                        mov     y,#1
+                        shl     y,data
+                        test    stat,#2         wc
+:reg                    muxnc   0,y
+
+        if_nc           cmpsub  data,#$F0       wc      'if released or shift/ctrl/alt/win, done
+        if_c            jmp     #update
+
+                        mov     y,_states+7             'get shift/ctrl/alt/win bit pairs
+                        shr     y,#16
+
+                        cmpsub  data,#$E0       wc      'translate keypad, considering numlock
+        if_c            test    _locks,#%100    wz
+        if_c_and_z      add     data,#@keypad1-@table
+        if_c_and_nz     add     data,#@keypad2-@table
+        if_c            call    #look
+        if_c            jmp     #:flags
+
+                        cmpsub  data,#$DD       wc      'handle scrlock/capslock/numlock
+        if_c            mov     x,#%001_000
+        if_c            shl     x,data
+        if_c            andn    x,_locks
+        if_c            shr     x,#3
+        if_c            shr     t,#29                   'ignore auto-repeat
+        if_c            andn    x,t             wz
+        if_c            xor     _locks,x
+        if_c            add     data,#$DD
+        if_c_and_nz     or      stat,#4                 'if change, set configure flag to update leds
+
+                        test    y,#%11          wz      'get shift into nz
+
+        if_nz           cmp     data,#$60+1     wc      'check shift1
+        if_nz_and_c     cmpsub  data,#$5B       wc
+        if_nz_and_c     add     data,#@shift1-@table
+        if_nz_and_c     call    #look
+        if_nz_and_c     andn    y,#%11
+
+        if_nz           cmp     data,#$3D+1     wc      'check shift2
+        if_nz_and_c     cmpsub  data,#$27       wc
+        if_nz_and_c     add     data,#@shift2-@table
+        if_nz_and_c     call    #look
+        if_nz_and_c     andn    y,#%11
+
+                        test    _locks,#%010    wc      'check shift-alpha, considering capslock
+                        muxnc   :shift,#$20
+                        test    _locks,#$40     wc
+        if_nz_and_nc    xor     :shift,#$20
+                        cmp     data,#"z"+1     wc
+        if_c            cmpsub  data,#"a"       wc
+:shift  if_c            add     data,#"A"
+        if_c            andn    y,#%11
+
+:flags                  ror     data,#8                 'add shift/ctrl/alt/win flags
+                        mov     x,#4                    '+$100 if shift
+:loop                   test    y,#%11          wz      '+$200 if ctrl
+                        shr     y,#2                    '+$400 if alt
+        if_nz           or      data,#1                 '+$800 if win
+                        ror     data,#1
+                        djnz    x,#:loop
+                        rol     data,#12
+
+                        rdlong  x,par                   'if room in buffer and key valid, enter
+                        sub     x,#1
+                        and     x,#$F
+                        cmp     x,_head         wz
+        if_nz           test    data,#$FF       wz
+        if_nz           mov     x,par
+        if_nz           add     x,#11*4
+        if_nz           add     x,_head
+        if_nz           add     x,_head
+        if_nz           wrword  data,x
+        if_nz           add     _head,#1
+        if_nz           and     _head,#$F
+
+                        test    stat,#4         wc      'if not configure flag, done
+        if_nc           jmp     #update                 'else configure to update leds
+'
+'
+' Configure keyboard
+'
+configure               mov     data,#$F3               'set keyboard auto-repeat
+                        call    #transmit
+                        mov     data,_auto
+                        and     data,#%11_11111
+                        call    #transmit
+
+                        mov     data,#$ED               'set keyboard lock-leds
+                        call    #transmit
+                        mov     data,_locks
+                        rev     data,#-3 & $1F
+                        test    data,#%100      wc
+                        rcl     data,#1
+                        and     data,#%111
+                        call    #transmit
+
+                        mov     x,_locks                'insert locks into _states
+                        and     x,#%111
+                        shl     _states+7,#3
+                        or      _states+7,x
+                        ror     _states+7,#3
+
+                        mov     _present,#1             'set _present
+
+                        jmp     #update                 'done
+'
+'
+' Lookup byte in table
+'
+look                    ror     data,#2                 'perform lookup
+                        movs    :reg,data
+                        add     :reg,#table
+                        shr     data,#27
+                        mov     x,data
+:reg                    mov     data,0
+                        shr     data,x
+
+                        jmp     #rand                   'isolate byte
+'
+'
+' Transmit byte to keyboard
+'
+transmit
+_c1                     or      dira,cmask              'pull clock low
+                        movs    napshr,#13              'hold clock for ~128us (must be >100us)
+                        call    #nap
+_d1                     or      dira,dmask              'pull data low
+                        movs    napshr,#18              'hold data for ~4us
+                        call    #nap
+_c2                     xor     dira,cmask              'release clock
+
+                        test    data,#$0FF      wc      'append parity and stop bits to byte
+                        muxnc   data,#$100
+                        or      data,dlsb
+
+                        mov     x,#10                   'ready 10 bits
+transmit_bit            call    #wait_c0                'wait until clock low
+                        shr     data,#1         wc      'output data bit
+_d2                     muxnc   dira,dmask
+                        mov     wcond,c1                'wait until clock high
+                        call    #wait
+                        djnz    x,#transmit_bit         'another bit?
+
+                        mov     wcond,c0d0              'wait until clock and data low
+                        call    #wait
+                        mov     wcond,c1d1              'wait until clock and data high
+                        call    #wait
+
+                        call    #receive_ack            'receive ack byte with timed wait
+                        cmp     data,#$FA       wz      'if ack error, reset keyboard
+        if_nz           jmp     #reset
+
+transmit_ret            ret
+'
+'
+' Receive byte from keyboard
+'
+receive                 test    _cpin,#$20      wc      'wait indefinitely for initial clock low
+                        waitpne cmask,cmask
+receive_ack
+                        mov     x,#11                   'ready 11 bits
+receive_bit             call    #wait_c0                'wait until clock low
+                        movs    napshr,#16              'pause ~16us
+                        call    #nap
+_d3                     test    dmask,ina       wc      'input data bit
+                        rcr     data,#1
+                        mov     wcond,c1                'wait until clock high
+                        call    #wait
+                        djnz    x,#receive_bit          'another bit?
+
+                        shr     data,#22                'align byte
+                        test    data,#$1FF      wc      'if parity error, reset keyboard
+        if_nc           jmp     #reset
+rand                    and     data,#$FF               'isolate byte
+
+look_ret
+receive_ack_ret
+receive_ret             ret
+'
+'
+' Wait for clock/data to be in required state(s)
+'
+wait_c0                 mov     wcond,c0                '(wait until clock low)
+
+wait                    mov     y,tenms                 'set timeout to 10ms
+
+wloop                   movs    napshr,#18              'nap ~4us
+                        call    #nap
+_c3                     test    cmask,ina       wc      'check required state(s)
+_d4                     test    dmask,ina       wz      'loop until got state(s) or timeout
+wcond   if_never        djnz    y,#wloop                '(replaced with c0/c1/c0d0/c1d1)
+
+                        tjz     y,#reset                'if timeout, reset keyboard
+wait_ret
+wait_c0_ret             ret
+
+
+c0      if_c            djnz    y,#wloop                '(if_never replacements)
+c1      if_nc           djnz    y,#wloop
+c0d0    if_c_or_nz      djnz    y,#wloop
+c1d1    if_nc_or_z      djnz    y,#wloop
+'
+'
+' Nap
+'
+nap                     rdlong  t,#0                    'get clkfreq
+napshr                  shr     t,#18/16/13             'shr scales time
+                        min     t,#3                    'ensure waitcnt won't snag
+                        add     t,cnt                   'add cnt to time
+                        waitcnt t,#0                    'wait until time elapses (nap)
+
+nap_ret                 ret
+'
+'
+' Initialized data
+'
+'
+dlsb                    long    1 << 9
+tenms                   long    10_000 / 4
+'
+'
+' Lookup table
+'                               ascii   scan    extkey  regkey  ()=keypad
+'
+table                   word    $0000   '00
+                        word    $00D8   '01             F9
+                        word    $0000   '02
+                        word    $00D4   '03             F5
+                        word    $00D2   '04             F3
+                        word    $00D0   '05             F1
+                        word    $00D1   '06             F2
+                        word    $00DB   '07             F12
+                        word    $0000   '08
+                        word    $00D9   '09             F10
+                        word    $00D7   '0A             F8
+                        word    $00D5   '0B             F6
+                        word    $00D3   '0C             F4
+                        word    $0009   '0D             Tab
+                        word    $0060   '0E             `
+                        word    $0000   '0F
+                        word    $0000   '10
+                        word    $F5F4   '11     Alt-R   Alt-L
+                        word    $00F0   '12             Shift-L
+                        word    $0000   '13
+                        word    $F3F2   '14     Ctrl-R  Ctrl-L
+                        word    $0071   '15             q
+                        word    $0031   '16             1
+                        word    $0000   '17
+                        word    $0000   '18
+                        word    $0000   '19
+                        word    $007A   '1A             z
+                        word    $0073   '1B             s
+                        word    $0061   '1C             a
+                        word    $0077   '1D             w
+                        word    $0032   '1E             2
+                        word    $F600   '1F     Win-L
+                        word    $0000   '20
+                        word    $0063   '21             c
+                        word    $0078   '22             x
+                        word    $0064   '23             d
+                        word    $0065   '24             e
+                        word    $0034   '25             4
+                        word    $0033   '26             3
+                        word    $F700   '27     Win-R
+                        word    $0000   '28
+                        word    $0020   '29             Space
+                        word    $0076   '2A             v
+                        word    $0066   '2B             f
+                        word    $0074   '2C             t
+                        word    $0072   '2D             r
+                        word    $0035   '2E             5
+                        word    $CC00   '2F     Apps
+                        word    $0000   '30
+                        word    $006E   '31             n
+                        word    $0062   '32             b
+                        word    $0068   '33             h
+                        word    $0067   '34             g
+                        word    $0079   '35             y
+                        word    $0036   '36             6
+                        word    $CD00   '37     Power
+                        word    $0000   '38
+                        word    $0000   '39
+                        word    $006D   '3A             m
+                        word    $006A   '3B             j
+                        word    $0075   '3C             u
+                        word    $0037   '3D             7
+                        word    $0038   '3E             8
+                        word    $CE00   '3F     Sleep
+                        word    $0000   '40
+                        word    $002C   '41             ,
+                        word    $006B   '42             k
+                        word    $0069   '43             i
+                        word    $006F   '44             o
+                        word    $0030   '45             0
+                        word    $0039   '46             9
+                        word    $0000   '47
+                        word    $0000   '48
+                        word    $002E   '49             .
+                        word    $EF2F   '4A     (/)     /
+                        word    $006C   '4B             l
+                        word    $003B   '4C             ;
+                        word    $0070   '4D             p
+                        word    $002D   '4E             -
+                        word    $0000   '4F
+                        word    $0000   '50
+                        word    $0000   '51
+                        word    $0027   '52             '
+                        word    $0000   '53
+                        word    $005B   '54             [
+                        word    $003D   '55             =
+                        word    $0000   '56
+                        word    $0000   '57
+                        word    $00DE   '58             CapsLock
+                        word    $00F1   '59             Shift-R
+                        word    $EB0D   '5A     (Enter) Enter
+                        word    $005D   '5B             ]
+                        word    $0000   '5C
+                        word    $005C   '5D             \
+                        word    $CF00   '5E     WakeUp
+                        word    $0000   '5F
+                        word    $0000   '60
+                        word    $0000   '61
+                        word    $0000   '62
+                        word    $0000   '63
+                        word    $0000   '64
+                        word    $0000   '65
+                        word    $00C8   '66             BackSpace
+                        word    $0000   '67
+                        word    $0000   '68
+                        word    $C5E1   '69     End     (1)
+                        word    $0000   '6A
+                        word    $C0E4   '6B     Left    (4)
+                        word    $C4E7   '6C     Home    (7)
+                        word    $0000   '6D
+                        word    $0000   '6E
+                        word    $0000   '6F
+                        word    $CAE0   '70     Insert  (0)
+                        word    $C9EA   '71     Delete  (.)
+                        word    $C3E2   '72     Down    (2)
+                        word    $00E5   '73             (5)
+                        word    $C1E6   '74     Right   (6)
+                        word    $C2E8   '75     Up      (8)
+                        word    $00CB   '76             Esc
+                        word    $00DF   '77             NumLock
+                        word    $00DA   '78             F11
+                        word    $00EC   '79             (+)
+                        word    $C7E3   '7A     PageDn  (3)
+                        word    $00ED   '7B             (-)
+                        word    $DCEE   '7C     PrScr   (*)
+                        word    $C6E9   '7D     PageUp  (9)
+                        word    $00DD   '7E             ScrLock
+                        word    $0000   '7F
+                        word    $0000   '80
+                        word    $0000   '81
+                        word    $0000   '82
+                        word    $00D6   '83             F7
+
+keypad1                 byte    $CA, $C5, $C3, $C7, $C0, 0, $C1, $C4, $C2, $C6, $C9, $0D, "+-*/"
+
+keypad2                 byte    "0123456789.", $0D, "+-*/"
+
+shift1                  byte    "{|}", 0, 0, "~"
+
+shift2                  byte    $22, 0, 0, 0, 0, "<_>?)!@#$%^&*(", 0, ":", 0, "+"
+'
+'
+' Uninitialized data
+'
+dmask                   res     1
+cmask                   res     1
+stat                    res     1
+data                    res     1
+x                       res     1
+y                       res     1
+t                       res     1
+
+_head                   res     1       'write-only
+_present                res     1       'write-only
+_states                 res     8       'write-only
+_dpin                   res     1       'read-only at start
+_cpin                   res     1       'read-only at start
+_locks                  res     1       'read-only at start
+_auto                   res     1       'read-only at start
+
+''
+''
+''      _________
+''      Key Codes
+''
+''      00..DF  = keypress and keystate
+''      E0..FF  = keystate only
+''
+''
+''      09      Tab
+''      0D      Enter
+''      20      Space
+''      21      !
+''      22      "
+''      23      #
+''      24      $
+''      25      %
+''      26      &
+''      27      '
+''      28      (
+''      29      )
+''      2A      *
+''      2B      +
+''      2C      ,
+''      2D      -
+''      2E      .
+''      2F      /
+''      30      0..9
+''      3A      :
+''      3B      ;
+''      3C      <
+''      3D      =
+''      3E      >
+''      3F      ?
+''      40      @       
+''      41..5A  A..Z
+''      5B      [
+''      5C      \
+''      5D      ]
+''      5E      ^
+''      5F      _
+''      60      `
+''      61..7A  a..z
+''      7B      {
+''      7C      |
+''      7D      }
+''      7E      ~
+''
+''      80-BF   (future international character support)
+''
+''      C0      Left Arrow
+''      C1      Right Arrow
+''      C2      Up Arrow
+''      C3      Down Arrow
+''      C4      Home
+''      C5      End
+''      C6      Page Up
+''      C7      Page Down
+''      C8      Backspace
+''      C9      Delete
+''      CA      Insert
+''      CB      Esc
+''      CC      Apps
+''      CD      Power
+''      CE      Sleep
+''      CF      Wakeup
+''
+''      D0..DB  F1..F12
+''      DC      Print Screen
+''      DD      Scroll Lock
+''      DE      Caps Lock
+''      DF      Num Lock
+''
+''      E0..E9  Keypad 0..9
+''      EA      Keypad .
+''      EB      Keypad Enter
+''      EC      Keypad +
+''      ED      Keypad -
+''      EE      Keypad *
+''      EF      Keypad /
+''
+''      F0      Left Shift
+''      F1      Right Shift
+''      F2      Left Ctrl
+''      F3      Right Ctrl
+''      F4      Left Alt
+''      F5      Right Alt
+''      F6      Left Win
+''      F7      Right Win
+''
+''      FD      Scroll Lock State
+''      FE      Caps Lock State
+''      FF      Num Lock State
+''
+''      +100    if Shift
+''      +200    if Ctrl
+''      +400    if Alt
+''      +800    if Win
+''
+''      eg. Ctrl-Alt-Delete = $6C9
+''
+''
+'' Note: Driver will buffer up to 15 keystrokes, then ignore overflow.
+
+{{
+
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │                                                            
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │ 
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}
\ No newline at end of file
diff --git a/samples/Propeller Spin/TV.spin b/samples/Propeller Spin/TV.spin
new file mode 100644
index 00000000..49b55b14
--- /dev/null
+++ b/samples/Propeller Spin/TV.spin	
@@ -0,0 +1,711 @@
+''***************************************
+''*  TV Driver v1.1                     *
+''*  Author: Chip Gracey                *
+''*  Copyright (c) 2004 Parallax, Inc.  *               
+''*  See end of file for terms of use.  *               
+''***************************************
+
+' v1.0 - 01 May 2006 - original version
+' v1.1 - 17 May 2006 - pixel tile size can now be 16 x 32 to enable more efficient
+'                       character displays utilizing the internal font - see 'tv_mode'
+
+
+CON
+
+  fntsc         = 3_579_545     'NTSC color frequency
+  lntsc         = 3640          'NTSC color cycles per line * 16
+  sntsc         = 624           'NTSC color cycles per sync * 16
+
+  fpal          = 4_433_618     'PAL color frequency
+  lpal          = 4540          'PAL color cycles per line * 16
+  spal          = 848           'PAL color cycles per sync * 16
+
+  paramcount    = 14
+  colortable    = $180          'start of colortable inside cog
+  
+
+VAR
+
+  long  cog
+
+
+PUB start(tvptr) : okay
+
+'' Start TV driver - starts a cog
+'' returns false if no cog available
+''
+''   tvptr = pointer to TV parameters
+
+  stop
+  okay := cog := cognew(@entry, tvptr) + 1
+
+
+PUB stop
+
+'' Stop TV driver - frees a cog
+
+  if cog
+    cogstop(cog~ - 1)
+
+
+DAT
+
+'*******************************
+'* Assembly language TV driver *
+'*******************************
+
+                        org
+'
+'
+' Entry
+'
+entry                   mov     taskptr,#tasks          'reset tasks
+
+                        mov     x,#10                   'perform task sections initially
+:init                   jmpret  taskret,taskptr
+                        djnz    x,#:init
+'
+'
+' Superfield
+'
+superfield              mov     taskptr,#tasks          'reset tasks
+
+                        test    _mode,#%0001    wc      'if ntsc, set phaseflip
+        if_nc           mov     phaseflip,phasemask
+
+                        test    _mode,#%0010    wz      'get interlace into nz
+'
+'
+' Field
+'
+field                   mov     x,vinv                  'do invisible back porch lines
+:black                  call    #hsync                  'do hsync
+                        waitvid burst,sync_high2        'do black
+                        jmpret  taskret,taskptr         'call task section (z undisturbed)
+                        djnz    x,#:black               'another black line?
+
+                        wrlong  visible,par             'set status to visible
+
+                        mov     x,vb                    'do visible back porch lines
+                        call    #blank_lines
+
+                        mov     screen,_screen          'point to first tile (upper-leftmost)
+                        mov     y,_vt                   'set vertical tiles
+:line                   mov     vx,_vx                  'set vertical expand
+:vert   if_z            xor     interlace,#1            'interlace skip?
+        if_z            tjz     interlace,#:skip
+
+                        call    #hsync                  'do hsync
+
+                        mov     vscl,hb                 'do visible back porch pixels
+                        xor     tile,colortable
+                        waitvid tile,#0
+
+                        mov     x,_ht                   'set horizontal tiles
+                        mov     vscl,hx                 'set horizontal expand
+
+:tile                   rdword  tile,screen             'read tile
+                        or      tile,line               'set pointer bits into tile
+                        rol     tile,#6                 'read tile pixels
+                        rdlong  pixels,tile             '(2 instructions between reads)
+                        shr     tile,#10+6              'set tile colors
+                        movs    :color,tile
+                        add     screen,#2               'point to next tile
+                        mov     tile,phaseflip
+:color                  xor     tile,colortable
+                        waitvid tile,pixels             'pass colors and pixels to video
+                        djnz    x,#:tile                'another tile?
+
+                        sub     screen,hc2x             'repoint to first tile in same line
+
+                        mov     vscl,hf                 'do visible front porch pixels
+                        mov     tile,phaseflip
+                        xor     tile,colortable
+                        waitvid tile,#0
+
+:skip                   djnz    vx,#:vert               'vertical expand?
+                        ror     line,linerot            'set next line
+                        add     line,lineadd    wc
+                        rol     line,linerot      
+        if_nc           jmp     #:line
+                        add     screen,hc2x             'point to first tile in next line
+                        djnz    y,#:line                'another tile line?
+
+        if_z            xor     interlace,#1    wz      'get interlace and field1 into z
+
+                        test    _mode,#%0001    wc      'do visible front porch lines
+                        mov     x,vf
+        if_nz_and_c     add     x,#1
+                        call    #blank_lines
+
+        if_nz           wrlong  invisible,par           'unless interlace and field1, set status to invisible
+
+        if_z_eq_c       call    #hsync                  'if required, do short line
+        if_z_eq_c       mov     vscl,hrest
+        if_z_eq_c       waitvid burst,sync_high2
+        if_z_eq_c       xor     phaseflip,phasemask
+
+                        call    #vsync_high             'do high vsync pulses
+
+                        movs    vsync1,#sync_low1       'do low vsync pulses
+                        movs    vsync2,#sync_low2
+                        call    #vsync_low
+
+                        call    #vsync_high             'do high vsync pulses
+
+        if_nz           mov     vscl,hhalf              'if odd frame, do half line
+        if_nz           waitvid burst,sync_high2
+
+        if_z            jmp     #field                  'if interlace and field1, display field2
+                        jmp     #superfield             'else, new superfield
+'
+'
+' Blank lines
+'
+blank_lines             call    #hsync                  'do hsync
+
+                        xor     tile,colortable         'do background
+                        waitvid tile,#0
+
+                        djnz    x,#blank_lines
+
+blank_lines_ret         ret
+'
+'
+' Horizontal sync
+'
+hsync                   test    _mode,#%0001    wc      'if pal, toggle phaseflip
+        if_c            xor     phaseflip,phasemask
+
+                        mov     vscl,sync_scale1        'do hsync       
+                        mov     tile,phaseflip
+                        xor     tile,burst
+                        waitvid tile,sync_normal
+
+                        mov     vscl,hvis               'setup in case blank line
+                        mov     tile,phaseflip
+
+hsync_ret               ret
+'
+'
+' Vertical sync
+'
+vsync_high              movs    vsync1,#sync_high1      'vertical sync
+                        movs    vsync2,#sync_high2
+
+vsync_low               mov     x,vrep
+
+vsyncx                  mov     vscl,sync_scale1
+vsync1                  waitvid burst,sync_high1
+
+                        mov     vscl,sync_scale2
+vsync2                  waitvid burst,sync_high2
+
+                        djnz    x,#vsyncx
+vsync_low_ret
+vsync_high_ret          ret
+'
+'
+' Tasks - performed in sections during invisible back porch lines
+'
+tasks                   mov     t1,par                  'load parameters
+                        movd    :par,#_enable           '(skip _status)
+                        mov     t2,#paramcount - 1
+:load                   add     t1,#4
+:par                    rdlong  0,t1
+                        add     :par,d0
+                        djnz    t2,#:load               '+119
+
+                        mov     t1,_pins                'set video pins and directions
+                        test    t1,#$08         wc
+        if_nc           mov     t2,pins0
+        if_c            mov     t2,pins1
+                        test    t1,#$40         wc
+                        shr     t1,#1
+                        shl     t1,#3
+                        shr     t2,t1
+                        movs    vcfg,t2
+                        shr     t1,#6
+                        movd    vcfg,t1
+                        shl     t1,#3
+                        and     t2,#$FF
+                        shl     t2,t1
+        if_nc           mov     dira,t2
+        if_nc           mov     dirb,#0
+        if_c            mov     dira,#0
+        if_c            mov     dirb,t2                 '+18
+
+                        tjz     _enable,#disabled       '+2, disabled?
+
+                        jmpret  taskptr,taskret         '+1=140, break and return later
+
+                        movs    :rd,#wtab               'load ntsc/pal metrics from word table
+                        movd    :wr,#hvis
+                        mov     t1,#wtabx - wtab
+                        test    _mode,#%0001    wc
+:rd                     mov     t2,0
+                        add     :rd,#1
+        if_nc           shl     t2,#16
+                        shr     t2,#16
+:wr                     mov     0,t2
+                        add     :wr,d0
+                        djnz    t1,#:rd                 '+54
+
+        if_nc           movs    :ltab,#ltab             'load ntsc/pal metrics from long table
+        if_c            movs    :ltab,#ltab+1
+                        movd    :ltab,#fcolor
+                        mov     t1,#(ltabx - ltab) >> 1
+:ltab                   mov     0,0
+                        add     :ltab,d0s1
+                        djnz    t1,#:ltab               '+17
+
+                        rdlong  t1,#0                   'get CLKFREQ
+                        shr     t1,#1                   'if CLKFREQ < 16MHz, cancel _broadcast
+                        cmp     t1,m8           wc
+        if_c            mov     _broadcast,#0
+                        shr     t1,#1                   'if CLKFREQ < color frequency * 4, disable
+                        cmp     t1,fcolor       wc
+        if_c            jmp     #disabled               '+11
+
+                        jmpret  taskptr,taskret         '+1=83, break and return later
+
+                        mov     t1,fcolor               'set ctra pll to fcolor * 16
+                        call    #divide                 'if ntsc, set vco to fcolor * 32 (114.5454 MHz)
+                        test    _mode,#%0001    wc      'if pal, set vco to fcolor * 16 (70.9379 MHz)
+        if_c            movi    ctra,#%00001_111        'select fcolor * 16 output (ntsc=/2, pal=/1)
+        if_nc           movi    ctra,#%00001_110
+        if_nc           shl     t2,#1
+                        mov     frqa,t2                 '+147
+
+                        jmpret  taskptr,taskret         '+1=148, break and return later
+
+                        mov     t1,_broadcast           'set ctrb pll to _broadcast
+                        mov     t2,#0                   'if 0, turn off ctrb
+                        tjz     t1,#:off
+                        min     t1,m8                   'limit from 8MHz to 128MHz
+                        max     t1,m128
+                        mov     t2,#%00001_100          'adjust _broadcast to be within 4MHz-8MHz
+:scale                  shr     t1,#1                   '(vco will be within 64MHz-128MHz)
+                        cmp     m8,t1           wc
+        if_c            add     t2,#%00000_001
+        if_c            jmp     #:scale
+:off                    movi    ctrb,t2
+                        call    #divide
+                        mov     frqb,t2                 '+165
+
+                        jmpret  taskptr,taskret         '+1=166, break and return later
+
+                        mov     t1,#%10100_000          'set video configuration
+                        test    _pins,#$01      wc      '(swap broadcast/baseband output bits?)
+        if_c            or      t1,#%01000_000
+                        test    _mode,#%1000    wc      '(strip chroma from broadcast?)
+        if_nc           or      t1,#%00010_000
+                        test    _mode,#%0100    wc      '(strip chroma from baseband?)
+        if_nc           or      t1,#%00001_000
+                        and     _auralcog,#%111         '(set aural cog)
+                        or      t1,_auralcog
+                        movi    vcfg,t1                 '+10
+
+                        mov     hx,_hx                  'compute horizontal metrics
+                        shl     hx,#8
+                        or      hx,_hx
+                        shl     hx,#4
+
+                        mov     hc2x,_ht
+                        shl     hc2x,#1
+
+                        mov     t1,_ht
+                        mov     t2,_hx
+                        call    #multiply
+                        mov     hf,hvis
+                        sub     hf,t1
+                        shr     hf,#1           wc
+                        mov     hb,_ho
+                        addx    hb,hf
+                        sub     hf,_ho                  '+52
+
+                        mov     t1,_vt                  'compute vertical metrics
+                        mov     t2,_vx
+                        call    #multiply
+                        test    _mode,#%10000   wc      'consider tile size
+                        muxc    linerot,#1
+                        mov     lineadd,lineinc
+        if_c            shr     lineadd,#1
+        if_c            shl     t1,#1
+                        test    _mode,#%0010    wc      'consider interlace
+        if_c            shr     t1,#1
+                        mov     vf,vvis
+                        sub     vf,t1
+                        shr     vf,#1           wc
+                        neg     vb,_vo
+                        addx    vb,vf
+                        add     vf,_vo                  '+53
+
+                        xor     _mode,#%0010            '+1, flip interlace bit for display
+
+:colors                 jmpret  taskptr,taskret         '+1=117/160, break and return later
+
+                        mov     t1,#13                  'load next 13 colors into colortable
+:colorloop              mov     t2,:colorreg            '5 times = 65 (all 64 colors loaded)
+                        shr     t2,#9-2
+                        and     t2,#$FC
+                        add     t2,_colors
+:colorreg               rdlong  colortable,t2
+                        add     :colorreg,d0
+                        andn    :colorreg,d6
+                        djnz    t1,#:colorloop          '+158
+
+                        jmp     #:colors                '+1, keep loading colors
+'
+'
+' Divide t1/CLKFREQ to get frqa or frqb value into t2
+'
+divide                  rdlong  m1,#0                   'get CLKFREQ
+
+                        mov     m2,#32+1
+:loop                   cmpsub  t1,m1           wc
+                        rcl     t2,#1
+                        shl     t1,#1
+                        djnz    m2,#:loop
+
+divide_ret              ret                             '+140
+'
+'
+' Multiply t1 * t2 * 16 (t1, t2 = bytes)
+'
+multiply                shl     t2,#8+4-1
+
+                        mov     m1,#8
+:loop                   shr     t1,#1           wc
+        if_c            add     t1,t2
+                        djnz    m1,#:loop
+
+multiply_ret            ret                             '+37
+'
+'
+' Disabled - reset status, nap ~4ms, try again
+'
+disabled                mov     ctra,#0                 'reset ctra
+                        mov     ctrb,#0                 'reset ctrb
+                        mov     vcfg,#0                 'reset video
+
+                        wrlong  outa,par                'set status to disabled
+
+                        rdlong  t1,#0                   'get CLKFREQ
+                        shr     t1,#8                   'nap for ~4ms
+                        min     t1,#3
+                        add     t1,cnt
+                        waitcnt t1,#0
+
+                        jmp     #entry                  'reload parameters
+'
+'
+' Initialized data
+'
+m8                      long    8_000_000
+m128                    long    128_000_000
+d0                      long    1 << 9 << 0
+d6                      long    1 << 9 << 6
+d0s1                    long    1 << 9 << 0 + 1 << 1
+interlace               long    0
+invisible               long    1
+visible                 long    2
+phaseflip               long    $00000000
+phasemask               long    $F0F0F0F0
+line                    long    $00060000
+lineinc                 long    $10000000
+linerot                 long    0
+pins0                   long    %11110000_01110000_00001111_00000111
+pins1                   long    %11111111_11110111_01111111_01110111
+sync_high1              long    %0101010101010101010101_101010_0101
+sync_high2              long    %01010101010101010101010101010101       'used for black
+sync_low1               long    %1010101010101010101010101010_0101
+sync_low2               long    %01_101010101010101010101010101010
+'
+'
+' NTSC/PAL metrics tables
+'                               ntsc                    pal
+'                               ----------------------------------------------
+wtab                    word    lntsc - sntsc,          lpal - spal     'hvis
+                        word    lntsc / 2 - sntsc,      lpal / 2 - spal 'hrest
+                        word    lntsc / 2,              lpal / 2        'hhalf
+                        word    243,                    286             'vvis
+                        word    10,                     18              'vinv
+                        word    6,                      5               'vrep
+                        word    $02_8A,                 $02_AA          'burst
+wtabx
+ltab                    long    fntsc                                   'fcolor
+                        long    fpal
+                        long    sntsc >> 4 << 12 + sntsc                'sync_scale1
+                        long    spal >> 4 << 12 + spal
+                        long    67 << 12 + lntsc / 2 - sntsc            'sync_scale2
+                        long    79 << 12 + lpal / 2 - spal
+                        long    %0101_00000000_01_10101010101010_0101   'sync_normal
+                        long    %010101_00000000_01_101010101010_0101
+ltabx
+'
+'
+' Uninitialized data
+'
+taskptr                 res     1                       'tasks
+taskret                 res     1
+t1                      res     1
+t2                      res     1
+m1                      res     1
+m2                      res     1
+
+x                       res     1                       'display
+y                       res     1
+hf                      res     1
+hb                      res     1
+vf                      res     1
+vb                      res     1
+hx                      res     1
+vx                      res     1
+hc2x                    res     1
+screen                  res     1
+tile                    res     1
+pixels                  res     1
+lineadd                 res     1
+
+hvis                    res     1                       'loaded from word table
+hrest                   res     1
+hhalf                   res     1
+vvis                    res     1
+vinv                    res     1
+vrep                    res     1
+burst                   res     1
+
+fcolor                  res     1                       'loaded from long table
+sync_scale1             res     1
+sync_scale2             res     1
+sync_normal             res     1
+'
+'
+' Parameter buffer
+'
+_enable                 res     1       '0/non-0        read-only
+_pins                   res     1       '%pppmmmm       read-only
+_mode                   res     1       '%tccip         read-only
+_screen                 res     1       '@word          read-only
+_colors                 res     1       '@long          read-only
+_ht                     res     1       '1+             read-only
+_vt                     res     1       '1+             read-only
+_hx                     res     1       '4+             read-only
+_vx                     res     1       '1+             read-only
+_ho                     res     1       '0+-            read-only
+_vo                     res     1       '0+-            read-only
+_broadcast              res     1       '0+             read-only
+_auralcog               res     1       '0-7            read-only
+
+                        fit     colortable              'fit underneath colortable ($180-$1BF)
+''
+''___
+''VAR                   'TV parameters - 14 contiguous longs
+''
+''  long  tv_status     '0/1/2 = off/invisible/visible              read-only
+''  long  tv_enable     '0/non-0 = off/on                           write-only
+''  long  tv_pins       '%pppmmmm = pin group, pin group mode       write-only
+''  long  tv_mode       '%tccip = tile,chroma,interlace,ntsc/pal    write-only
+''  long  tv_screen     'pointer to screen (words)                  write-only      
+''  long  tv_colors     'pointer to colors (longs)                  write-only                            
+''  long  tv_ht         'horizontal tiles                           write-only                            
+''  long  tv_vt         'vertical tiles                             write-only                            
+''  long  tv_hx         'horizontal tile expansion                  write-only                            
+''  long  tv_vx         'vertical tile expansion                    write-only                            
+''  long  tv_ho         'horizontal offset                          write-only                            
+''  long  tv_vo         'vertical offset                            write-only                            
+''  long  tv_broadcast  'broadcast frequency (Hz)                   write-only                            
+''  long  tv_auralcog   'aural fm cog                               write-only                            
+''                                                                                              
+''The preceding VAR section may be copied into your code.        
+''After setting variables, do start(@tv_status) to start driver. 
+''                                                               
+''All parameters are reloaded each superframe, allowing you to make live
+''changes. To minimize flicker, correlate changes with tv_status.
+''
+''Experimentation may be required to optimize some parameters.
+''
+''Parameter descriptions:
+''  _________
+''  tv_status
+''
+''    driver sets this to indicate status:
+''      0: driver disabled (tv_enable = 0 or CLKFREQ < requirement)
+''      1: currently outputting invisible sync data
+''      2: currently outputting visible screen data
+''  _________
+''  tv_enable
+''
+''        0: disable (pins will be driven low, reduces power)
+''    non-0: enable
+''  _______
+''  tv_pins
+''
+''    bits 6..4 select pin group:
+''      %000: pins 7..0
+''      %001: pins 15..8
+''      %010: pins 23..16
+''      %011: pins 31..24
+''      %100: pins 39..32
+''      %101: pins 47..40
+''      %110: pins 55..48
+''      %111: pins 63..56
+''
+''    bits 3..0 select pin group mode:
+''      %0000: %0000_0111    -                    baseband
+''      %0001: %0000_0111    -                    broadcast
+''      %0010: %0000_1111    -                    baseband + chroma
+''      %0011: %0000_1111    -                    broadcast + aural
+''      %0100: %0111_0000    broadcast            -
+''      %0101: %0111_0000    baseband             -
+''      %0110: %1111_0000    broadcast + aural    -
+''      %0111: %1111_0000    baseband + chroma    -
+''      %1000: %0111_0111    broadcast            baseband
+''      %1001: %0111_0111    baseband             broadcast
+''      %1010: %0111_1111    broadcast            baseband + chroma
+''      %1011: %0111_1111    baseband             broadcast + aural
+''      %1100: %1111_0111    broadcast + aural    baseband
+''      %1101: %1111_0111    baseband + chroma    broadcast
+''      %1110: %1111_1111    broadcast + aural    baseband + chroma
+''      %1111: %1111_1111    baseband + chroma    broadcast + aural
+''      -----------------------------------------------------------
+''            active pins    top nibble           bottom nibble
+''
+''      the baseband signal nibble is arranged as:
+''        bit 3: chroma signal for s-video (attach via 560-ohm resistor)
+''        bits 2..0: baseband video (sum 270/560/1100-ohm resistors to form 75-ohm 1V signal)
+''
+''      the broadcast signal nibble is arranged as:
+''        bit 3: aural subcarrier (sum 560-ohm resistor into network below)
+''        bits 2..0: visual carrier (sum 270/560/1100-ohm resistors to form 75-ohm 1V signal)
+''  _______
+''  tv_mode
+''
+''    bit 4 selects between 16x16 and 16x32 pixel tiles:
+''      0: 16x16 pixel tiles (tileheight = 16)
+''      1: 16x32 pixel tiles (tileheight = 32)
+''
+''    bit 3 controls chroma mixing into broadcast:
+''      0: mix chroma into broadcast (color)
+''      1: strip chroma from broadcast (black/white)
+''
+''    bit 2 controls chroma mixing into baseband:
+''      0: mix chroma into baseband (composite color)
+''      1: strip chroma from baseband (black/white or s-video)
+''
+''    bit 1 controls interlace:
+''      0: progressive scan (243 display lines for NTSC, 286 for PAL)
+''           less flicker, good for motion
+''      1: interlaced scan (486 display lines for NTSC, 572 for PAL)
+''           doubles the vertical display lines, good for text
+''
+''    bit 0 selects NTSC or PAL format
+''      0: NTSC
+''           3016 horizontal display ticks
+''           243 or 486 (interlaced) vertical display lines
+''           CLKFREQ must be at least 14_318_180 (4 * 3_579_545 Hz)*
+''      1: PAL
+''           3692 horizontal display ticks
+''           286 or 572 (interlaced) vertical display lines
+''           CLKFREQ must be at least 17_734_472 (4 * 4_433_618 Hz)*
+''
+''      * driver will disable itself while CLKFREQ is below requirement
+''  _________
+''  tv_screen
+''
+''    pointer to words which define screen contents (left-to-right, top-to-bottom)
+''      number of words must be tv_ht * tv_vt
+''      each word has two bitfields: a 6-bit colorset ptr and a 10-bit pixelgroup ptr
+''        bits 15..10: select the colorset* for the associated pixel tile
+''        bits 9..0: select the pixelgroup** address %ppppppppppcccc00 (p=address, c=0..15)
+''
+''       * colorsets are longs which each define four 8-bit colors
+''
+''      ** pixelgroups are <tileheight> longs which define (left-to-right, top-to-bottom) the 2-bit
+''         (four color) pixels that make up a 16x16 or a 32x32 pixel tile
+''  _________
+''  tv_colors
+''
+''    pointer to longs which define colorsets
+''      number of longs must be 1..64
+''      each long has four 8-bit fields which define colors for 2-bit (four color) pixels
+''      first long's bottom color is also used as the screen background color
+''      8-bit color fields are as follows:
+''        bits 7..4: chroma data (0..15 = blue..green..red..)*
+''        bit 3: controls chroma modulation (0=off, 1=on)
+''        bits 2..0: 3-bit luminance level:
+''          values 0..1: reserved for sync - don't use
+''          values 2..7: valid luminance range, modulation adds/subtracts 1 (beware of 7)
+''          value 0 may be modulated to produce a saturated color toggling between levels 1 and 7
+''
+''      * because of TV's limitations, it doesn't look good when chroma changes abruptly -
+''        rather, use luminance - change chroma only against a black or white background for
+''        best appearance
+''  _____
+''  tv_ht
+''
+''    horizontal number pixel tiles - must be at least 1
+''    practical limit is 40 for NTSC, 50 for PAL
+''  _____
+''  tv_vt
+''
+''    vertical number of pixel tiles - must be at least 1
+''    practical limit is 13 for NTSC, 15 for PAL (26/30 max for interlaced NTSC/PAL)
+''  _____
+''  tv_hx
+''
+''    horizontal tile expansion factor - must be at least 3 for NTSC, 4 for PAL
+''
+''    make sure 16 * tv_ht * tv_hx + ||tv_ho + 32 is less than the horizontal display ticks
+''  _____
+''  tv_vx
+''
+''    vertical tile expansion factor - must be at least 1
+''
+''    make sure <tileheight> * tv_vt * tv_vx + ||tv_vo + 1 is less than the display lines
+''  _____
+''  tv_ho
+''
+''    horizontal offset in ticks - pos/neg value (0 for centered image)
+''    shifts the display right/left
+''  _____
+''  tv_vo
+''
+''    vertical offset in lines - pos/neg value (0 for centered image)
+''    shifts the display up/down
+''  ____________
+''  tv_broadcast
+''
+''    broadcast frequency expressed in Hz (ie channel 2 is 55_250_000)
+''    if 0, modulator is turned off - saves power
+''
+''    broadcasting requires CLKFREQ to be at least 16_000_000
+''    while CLKFREQ is below 16_000_000, modulator will be turned off
+''  ___________
+''  tv_auralcog
+''
+''    selects cog to supply aural fm signal - 0..7
+''    uses ctra pll output from selected cog
+''
+''    in NTSC, the offset frequency must be 4.5MHz and the max bandwidth +-25KHz
+''    in PAL, the offset frequency and max bandwidth vary by PAL type
+
+{{
+
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │                                                            
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │ 
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}
\ No newline at end of file
diff --git a/samples/Propeller Spin/TV_Terminal.spin b/samples/Propeller Spin/TV_Terminal.spin
new file mode 100644
index 00000000..697cd9f8
--- /dev/null
+++ b/samples/Propeller Spin/TV_Terminal.spin	
@@ -0,0 +1,244 @@
+''***************************************
+''*  TV Terminal v1.1                   *
+''*  Author: Chip Gracey                *
+''*  Copyright (c) 2005 Parallax, Inc.  *
+''*  See end of file for terms of use.  *
+''***************************************
+
+{-----------------REVISION HISTORY-----------------
+ v1.1 - Updated 5/15/2006 to use actual pin number, instead of pin group, for Start method's basepin parameter.}
+ 
+CON
+
+  x_tiles = 16
+  y_tiles = 13
+
+  x_screen = x_tiles << 4
+  y_screen = y_tiles << 4
+
+  width = 0             '0 = minimum
+  x_scale = 1           '1 = minimum
+  y_scale = 1           '1 = minimum
+  x_spacing = 6         '6 = normal
+  y_spacing = 13        '13 = normal
+
+  x_chr = x_scale * x_spacing
+  y_chr = y_scale * y_spacing
+
+  y_offset = y_spacing / 6 + y_chr - 1
+
+  x_limit = x_screen / (x_scale * x_spacing)
+  y_limit = y_screen / (y_scale * y_spacing)
+  y_max = y_limit - 1
+
+  y_screen_bytes = y_screen << 2
+  y_scroll = y_chr << 2
+  y_scroll_longs = y_chr * y_max
+  y_clear = y_scroll_longs << 2
+  y_clear_longs = y_screen - y_scroll_longs
+
+  paramcount = 14       
+
+  
+VAR
+
+  long  x, y, bitmap_base
+
+  long  tv_status     '0/1/2 = off/visible/invisible           read-only
+  long  tv_enable     '0/? = off/on                            write-only
+  long  tv_pins       '%ppmmm = pins                           write-only
+  long  tv_mode       '%ccinp = chroma,interlace,ntsc/pal,swap write-only
+  long  tv_screen     'pointer to screen (words)               write-only
+  long  tv_colors     'pointer to colors (longs)               write-only               
+  long  tv_hc         'horizontal cells                        write-only
+  long  tv_vc         'vertical cells                          write-only
+  long  tv_hx         'horizontal cell expansion               write-only
+  long  tv_vx         'vertical cell expansion                 write-only
+  long  tv_ho         'horizontal offset                       write-only
+  long  tv_vo         'vertical offset                         write-only
+  long  tv_broadcast  'broadcast frequency (Hz)                write-only
+  long  tv_auralcog   'aural fm cog                            write-only
+
+  long  bitmap[x_tiles * y_tiles << 4 + 16]     'add 16 longs to allow for 64-byte alignment
+  word  screen[x_tiles * y_tiles]
+  
+
+OBJ
+
+  tv    : "tv"
+  gr    : "graphics"
+
+
+PUB start(basepin)
+
+'' Start terminal
+''
+''  basepin = first of three pins on a 4-pin boundary (0, 4, 8...) to have
+''  1.1k, 560, and 270 ohm resistors connected and summed to form the 1V,
+''  75 ohm DAC for baseband video   
+
+  'init bitmap and tile screen
+  bitmap_base := (@bitmap + $3F) & $7FC0
+  repeat x from 0 to x_tiles - 1
+    repeat y from 0 to y_tiles - 1
+      screen[y * x_tiles + x] := bitmap_base >> 6 + y + x * y_tiles
+
+  'start tv
+  tvparams_pins := (basepin & $38) << 1 | (basepin & 4 == 4) & %0101
+  longmove(@tv_status, @tvparams, paramcount)
+  tv_screen := @screen
+  tv_colors := @color_schemes
+  tv.start(@tv_status)
+
+  'start graphics
+  gr.start
+  gr.setup(x_tiles, y_tiles, 0, y_screen, bitmap_base)
+  gr.textmode(x_scale, y_scale, x_spacing, 0)
+  gr.width(width)
+  out(0)
+
+
+PUB stop
+
+'' Stop terminal
+
+  tv.stop
+  gr.stop
+
+
+PUB out(c)
+
+'' Print a character
+''
+''       $00 = home
+''  $01..$03 = color
+''  $04..$07 = color schemes
+''       $09 = tab
+''       $0D = return
+''  $20..$7E = character
+
+  case c
+
+    $00:                'home?
+      gr.clear
+      x := y := 0
+
+    $01..$03:           'color?
+      gr.color(c)
+
+    $04..$07:           'color scheme?
+      tv_colors := @color_schemes[c & 3]
+
+    $09:                'tab?
+      repeat
+        out($20)
+      while x & 7
+
+    $0D:                'return?
+      newline
+
+    $20..$7E:           'character?
+      gr.text(x * x_chr, -y * y_chr - y_offset, @c)
+      gr.finish
+      if ++x == x_limit
+        newline
+
+
+PUB str(string_ptr)
+
+'' Print a zero-terminated string
+
+  repeat strsize(string_ptr)
+    out(byte[string_ptr++])
+
+
+PUB dec(value) | i
+
+'' Print a decimal number
+
+  if value < 0
+    -value
+    out("-")
+
+  i := 1_000_000_000
+
+  repeat 10
+    if value => i
+      out(value / i + "0")
+      value //= i
+      result~~
+    elseif result or i == 1
+      out("0")
+    i /= 10
+
+
+PUB hex(value, digits)
+
+'' Print a hexadecimal number
+
+  value <<= (8 - digits) << 2
+  repeat digits
+    out(lookupz((value <-= 4) & $F : "0".."9", "A".."F"))
+
+
+PUB bin(value, digits)
+
+'' Print a binary number
+
+  value <<= 32 - digits
+  repeat digits
+    out((value <-= 1) & 1 + "0")
+
+
+PRI newline
+
+  if ++y == y_limit
+    gr.finish
+    repeat x from 0 to x_tiles - 1
+      y := bitmap_base + x * y_screen_bytes
+      longmove(y, y + y_scroll, y_scroll_longs)
+      longfill(y + y_clear, 0, y_clear_longs)
+    y := y_max
+  x := 0
+
+
+DAT
+
+tvparams                long    0               'status
+                        long    1               'enable
+tvparams_pins           long    %001_0101       'pins
+                        long    %0000           'mode
+                        long    0               'screen
+                        long    0               'colors
+                        long    x_tiles         'hc
+                        long    y_tiles         'vc
+                        long    10              'hx
+                        long    1               'vx
+                        long    0               'ho
+                        long    0               'vo
+                        long    55_250_000      'broadcast
+                        long    0               'auralcog
+
+color_schemes           long    $BC_6C_05_02
+                        long    $0E_0D_0C_0A
+                        long    $6E_6D_6C_6A
+                        long    $BE_BD_BC_BA
+
+{{
+
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │                                                            
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │ 
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}                   
\ No newline at end of file
diff --git a/samples/Propeller Spin/TV_Text.spin b/samples/Propeller Spin/TV_Text.spin
new file mode 100644
index 00000000..160ffc97
--- /dev/null
+++ b/samples/Propeller Spin/TV_Text.spin	
@@ -0,0 +1,232 @@
+''***************************************
+''*  TV Text 40x13 v1.0                 *
+''*  Author: Chip Gracey                *
+''*  Copyright (c) 2006 Parallax, Inc.  *               
+''*  See end of file for terms of use.  *               
+''***************************************
+
+CON
+
+  cols = 40
+  rows = 13
+
+  screensize = cols * rows
+  lastrow = screensize - cols
+
+  tv_count = 14
+
+  
+VAR
+
+  long  col, row, color, flag
+  
+  word  screen[screensize]
+  long  colors[8 * 2]
+
+  long  tv_status     '0/1/2 = off/invisible/visible              read-only   (14 longs)
+  long  tv_enable     '0/non-0 = off/on                           write-only
+  long  tv_pins       '%pppmmmm = pin group, pin group mode       write-only
+  long  tv_mode       '%tccip = tile,chroma,interlace,ntsc/pal    write-only
+  long  tv_screen     'pointer to screen (words)                  write-only      
+  long  tv_colors     'pointer to colors (longs)                  write-only                            
+  long  tv_ht         'horizontal tiles                           write-only                            
+  long  tv_vt         'vertical tiles                             write-only                            
+  long  tv_hx         'horizontal tile expansion                  write-only                            
+  long  tv_vx         'vertical tile expansion                    write-only                            
+  long  tv_ho         'horizontal offset                          write-only                            
+  long  tv_vo         'vertical offset                            write-only                            
+  long  tv_broadcast  'broadcast frequency (Hz)                   write-only                            
+  long  tv_auralcog   'aural fm cog                               write-only                            
+
+
+OBJ
+
+  tv : "tv"
+
+
+PUB start(basepin) : okay
+
+'' Start terminal - starts a cog
+'' returns false if no cog available
+
+  setcolors(@palette)
+  out(0)
+  
+  longmove(@tv_status, @tv_params, tv_count)
+  tv_pins := (basepin & $38) << 1 | (basepin & 4 == 4) & %0101
+  tv_screen := @screen
+  tv_colors := @colors
+  
+  okay := tv.start(@tv_status)
+
+
+PUB stop
+
+'' Stop terminal - frees a cog
+
+  tv.stop
+
+
+PUB str(stringptr)
+
+'' Print a zero-terminated string
+
+  repeat strsize(stringptr)
+    out(byte[stringptr++])
+
+
+PUB dec(value) | i
+
+'' Print a decimal number
+
+  if value < 0
+    -value
+    out("-")
+
+  i := 1_000_000_000
+
+  repeat 10
+    if value => i
+      out(value / i + "0")
+      value //= i
+      result~~
+    elseif result or i == 1
+      out("0")
+    i /= 10
+
+
+PUB hex(value, digits)
+
+'' Print a hexadecimal number
+
+  value <<= (8 - digits) << 2
+  repeat digits
+    out(lookupz((value <-= 4) & $F : "0".."9", "A".."F"))
+
+
+PUB bin(value, digits)
+
+'' Print a binary number
+
+  value <<= 32 - digits
+  repeat digits
+    out((value <-= 1) & 1 + "0")
+
+
+PUB out(c) | i, k
+
+'' Output a character
+''
+''     $00 = clear screen
+''     $01 = home
+''     $08 = backspace
+''     $09 = tab (8 spaces per)
+''     $0A = set X position (X follows)
+''     $0B = set Y position (Y follows)
+''     $0C = set color (color follows)
+''     $0D = return
+''  others = printable characters
+
+  case flag
+    $00: case c
+           $00: wordfill(@screen, $220, screensize)
+                col := row := 0
+           $01: col := row := 0
+           $08: if col
+                  col--
+           $09: repeat
+                  print(" ")
+                while col & 7
+           $0A..$0C: flag := c
+                     return
+           $0D: newline
+           other: print(c)
+    $0A: col := c // cols
+    $0B: row := c // rows
+    $0C: color := c & 7
+  flag := 0
+
+
+PUB setcolors(colorptr) | i, fore, back
+
+'' Override default color palette
+'' colorptr must point to a list of up to 8 colors
+'' arranged as follows:
+''
+''               fore   back
+''               ------------
+'' palette  byte color, color     'color 0
+''          byte color, color     'color 1
+''          byte color, color     'color 2
+''          ...
+
+  repeat i from 0 to 7
+    fore := byte[colorptr][i << 1]
+    back := byte[colorptr][i << 1 + 1]
+    colors[i << 1]     := fore << 24 + back << 16 + fore << 8 + back
+    colors[i << 1 + 1] := fore << 24 + fore << 16 + back << 8 + back
+
+
+PRI print(c)
+
+  screen[row * cols + col] := (color << 1 + c & 1) << 10 + $200 + c & $FE
+  if ++col == cols
+    newline
+
+
+PRI newline | i
+
+  col := 0
+  if ++row == rows
+    row--
+    wordmove(@screen, @screen[cols], lastrow)   'scroll lines
+    wordfill(@screen[lastrow], $220, cols)      'clear new line
+
+
+DAT
+
+tv_params               long    0               'status
+                        long    1               'enable
+                        long    0               'pins
+                        long    %10010          'mode
+                        long    0               'screen
+                        long    0               'colors
+                        long    cols            'hc
+                        long    rows            'vc
+                        long    4               'hx
+                        long    1               'vx
+                        long    0               'ho
+                        long    0               'vo
+                        long    0               'broadcast
+                        long    0               'auralcog
+
+
+                        '       fore   back
+                        '       color  color
+palette                 byte    $07,   $0A    '0    white / dark blue
+                        byte    $07,   $BB    '1    white / red
+                        byte    $9E,   $9B    '2   yellow / brown
+                        byte    $04,   $07    '3     grey / white
+                        byte    $3D,   $3B    '4     cyan / dark cyan
+                        byte    $6B,   $6E    '5    green / gray-green
+                        byte    $BB,   $CE    '6      red / pink
+                        byte    $3C,   $0A    '7     cyan / blue
+
+{{
+
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │                                                            
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │ 
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}                        
\ No newline at end of file
diff --git a/samples/Propeller Spin/VGA.spin b/samples/Propeller Spin/VGA.spin
new file mode 100644
index 00000000..ef14d2c4
--- /dev/null
+++ b/samples/Propeller Spin/VGA.spin	
@@ -0,0 +1,596 @@
+''***************************************
+''*  VGA Driver v1.1                    *
+''*  Author: Chip Gracey                *
+''*  Copyright (c) 2006 Parallax, Inc.  *
+''*  See end of file for terms of use.  *
+''***************************************
+
+' v1.0 - 01 May 2006 - original version
+' v1.1 - 15 May 2006 - pixel tile size can now be 16 x 32 to enable more efficient
+'                       character displays utilizing the internal font - see 'vga_mode'
+
+CON
+
+  paramcount    = 21
+  colortable    = $180  'start of colortable inside cog
+  
+
+VAR
+
+  long  cog
+
+
+PUB start(vgaptr) : okay
+
+'' Start VGA driver - starts a cog
+'' returns false if no cog available
+''
+''   vgaptr = pointer to VGA parameters
+
+  stop
+  okay := cog := cognew(@entry, vgaptr) + 1
+
+
+PUB stop
+
+'' Stop VGA driver - frees a cog
+
+  if cog
+    cogstop(cog~ - 1)
+
+
+DAT
+
+'********************************
+'* Assembly language VGA driver *
+'********************************
+
+                        org
+'
+'
+' Entry
+'
+entry                   mov     taskptr,#tasks          'reset tasks
+
+                        mov     x,#8                    'perform task sections initially
+:init                   jmpret  taskret,taskptr
+                        djnz    x,#:init
+'
+'
+' Superfield
+'
+superfield              mov     hv,hvbase               'set hv
+
+                        mov     interlace,#0            'reset interlace
+
+                        test    _mode,#%0100    wz      'get interlace into nz
+'
+'
+' Field
+'
+field                   wrlong  visible,par             'set status to visible
+
+                        tjz     vb,#:nobl               'do any visible back porch lines
+                        mov     x,vb
+                        movd    bcolor,#colortable
+                        call    #blank_line
+:nobl
+                        mov     screen,_screen          'point to first tile (upper-leftmost)
+                        mov     y,_vt                   'set vertical tiles
+:line                   mov     vx,_vx                  'set vertical expand
+:vert   if_nz           xor     interlace,#1            'interlace skip?
+        if_nz           tjz     interlace,#:skip
+
+                        tjz     hb,#:nobp               'do any visible back porch pixels
+                        mov     vscl,hb
+                        waitvid colortable,#0
+:nobp
+                        mov     x,_ht                   'set horizontal tiles
+                        mov     vscl,hx                 'set horizontal expand
+
+:tile                   rdword  tile,screen             'read tile
+                        add     tile,line               'set pointer bits into tile
+                        rol     tile,#6                 'read tile pixels
+                        rdlong  pixels,tile             '(8 clocks between reads)
+                        shr     tile,#10+6              'set tile colors
+                        movd    :color,tile
+                        add     screen,#2               'point to next tile
+:color                  waitvid colortable,pixels       'pass colors and pixels to video
+                        djnz    x,#:tile                'another tile?
+
+                        sub     screen,hc2x             'repoint to first tile in same line
+
+                        tjz     hf,#:nofp               'do any visible front porch pixels
+                        mov     vscl,hf
+                        waitvid colortable,#0
+:nofp
+                        mov     x,#1                    'do hsync
+                        call    #blank_hsync            '(x=0)
+
+:skip                   djnz    vx,#:vert               'vertical expand?
+                        ror     line,linerot            'set next line
+                        add     line,lineadd    wc
+                        rol     line,linerot                        
+        if_nc           jmp     #:line
+                        add     screen,hc2x             'point to first tile in next line
+                        djnz    y,#:line        wc      'another tile line? (c=0)
+
+                        tjz     vf,#:nofl               'do any visible front porch lines
+                        mov     x,vf
+                        movd    bcolor,#colortable
+                        call    #blank_line
+:nofl
+        if_nz           xor     interlace,#1    wc,wz   'get interlace and field1 into nz (c=0/?)
+
+        if_z            wrlong  invisible,par           'unless interlace and field1, set status to invisible
+
+                        mov     taskptr,#tasks          'reset tasks
+
+                        addx    x,_vf           wc      'do invisible front porch lines (x=0 before, c=0 after)
+                        call    #blank_line
+
+                        mov     x,_vs                   'do vsync lines
+                        call    #blank_vsync
+
+                        mov     x,_vb                   'do invisible back porch lines, except last
+                        call    #blank_vsync
+
+        if_nz           jmp     #field                  'if interlace and field1, display field2
+                        jmp     #superfield             'else, new superfield
+'
+'
+' Blank line(s)
+'
+blank_vsync             cmp     interlace,#2    wc      'vsync (c=1)
+
+blank_line              mov     vscl,h1                 'blank line or vsync-interlace?
+        if_nc           add     vscl,h2
+        if_c_and_nz     xor     hv,#%01
+        if_c            waitvid hv,#0
+        if_c            mov     vscl,h2                 'blank line or vsync-normal?
+        if_c_and_z      xor     hv,#%01
+bcolor                  waitvid hv,#0
+
+        if_nc           jmpret  taskret,taskptr         'call task section (z undisturbed)
+
+blank_hsync             mov     vscl,_hf                'hsync, do invisible front porch pixels
+                        waitvid hv,#0
+
+                        mov     vscl,_hs                'do invisble sync pixels
+                        xor     hv,#%10
+                        waitvid hv,#0
+
+                        mov     vscl,_hb                'do invisible back porch pixels
+                        xor     hv,#%10
+                        waitvid hv,#0
+
+                        djnz    x,#blank_line   wc      '(c=0)
+
+                        movd    bcolor,#hv
+blank_hsync_ret
+blank_line_ret
+blank_vsync_ret         ret
+'
+'
+' Tasks - performed in sections during invisible back porch lines
+'
+tasks                   mov     t1,par                  'load parameters
+                        movd    :par,#_enable           '(skip _status)
+                        mov     t2,#paramcount - 1
+:load                   add     t1,#4
+:par                    rdlong  0,t1
+                        add     :par,d0
+                        djnz    t2,#:load               '+164
+
+                        mov     t1,#2                   'set video pins and directions
+                        shl     t1,_pins                '(if video disabled, pins will drive low)
+                        sub     t1,#1
+                        test    _pins,#$20      wc
+                        and     _pins,#$38
+                        shr     t1,_pins
+                        movs    vcfg,t1
+                        shl     t1,_pins
+                        shr     _pins,#3
+                        movd    vcfg,_pins
+        if_nc           mov     dira,t1
+        if_nc           mov     dirb,#0
+        if_c            mov     dira,#0
+        if_c            mov     dirb,t1                 '+14
+
+                        tjz     _enable,#disabled       '+2, disabled?
+
+                        jmpret  taskptr,taskret         '+1=181, break and return later
+
+                        rdlong  t1,#0                   'make sure CLKFREQ => 16MHz
+                        shr     t1,#1
+                        cmp     t1,m8           wc
+        if_c            jmp     #disabled               '+8
+
+                        min     _rate,pllmin            'limit _rate to pll range
+                        max     _rate,pllmax            '+2
+
+                        mov     t1,#%00001_011          'set ctra configuration
+:max                    cmp     m8,_rate        wc      'adjust rate to be within 4MHz-8MHz
+        if_c            shr     _rate,#1                '(vco will be within 64MHz-128MHz)
+        if_c            add     t1,#%00000_001
+        if_c            jmp     #:max
+:min                    cmp     _rate,m4        wc
+        if_c            shl     _rate,#1
+        if_c            sub     x,#%00000_001
+        if_c            jmp     #:min
+                        movi    ctra,t1                 '+22
+
+                        rdlong  t1,#0                   'divide _rate/CLKFREQ and set frqa
+                        mov     hvbase,#32+1
+:div                    cmpsub  _rate,t1        wc
+                        rcl     t2,#1
+                        shl     _rate,#1
+                        djnz    hvbase,#:div            '(hvbase=0)
+                        mov     frqa,t2                 '+136
+
+                        test    _mode,#%0001    wc      'make hvbase
+                        muxnc   hvbase,vmask
+                        test    _mode,#%0010    wc
+                        muxnc   hvbase,hmask            '+4
+
+                        jmpret  taskptr,taskret         '+1=173, break and return later
+
+                        mov     hx,_hx                  'compute horizontal metrics
+                        shl     hx,#8
+                        or      hx,_hx
+                        shl     hx,#4
+
+                        mov     hc2x,_ht
+                        shl     hc2x,#1
+
+                        mov     h1,_hd
+                        neg     h2,_hf
+                        sub     h2,_hs
+                        sub     h2,_hb
+                        sub     h1,h2
+                        shr     h1,#1           wc
+                        addx    h2,h1
+
+                        mov     t1,_ht
+                        mov     t2,_hx
+                        call    #multiply
+                        mov     hf,_hd
+                        sub     hf,t1
+                        shr     hf,#1           wc
+                        mov     hb,_ho
+                        addx    hb,hf
+                        sub     hf,_ho                  '+59
+
+                        mov     t1,_vt                  'compute vertical metrics
+                        mov     t2,_vx
+                        call    #multiply
+                        test    _mode,#%1000    wc      'consider tile size
+                        muxc    linerot,#1
+                        mov     lineadd,lineinc
+        if_c            shr     lineadd,#1
+        if_c            shl     t1,#1
+                        test    _mode,#%0100    wc      'consider interlace
+        if_c            shr     t1,#1
+                        mov     vf,_vd
+                        sub     vf,t1
+                        shr     vf,#1           wc
+                        neg     vb,_vo
+                        addx    vb,vf
+                        add     vf,_vo                  '+53
+
+                        movi    vcfg,#%01100_000        '+1, set video configuration
+
+:colors                 jmpret  taskptr,taskret         '+1=114/160, break and return later
+
+                        mov     t1,#13                  'load next 13 colors into colortable
+:loop                   mov     t2,:color               '5 times = 65 (all 64 colors loaded)
+                        shr     t2,#9-2
+                        and     t2,#$FC
+                        add     t2,_colors
+                        rdlong  t2,t2
+                        and     t2,colormask
+                        or      t2,hvbase
+:color                  mov     colortable,t2
+                        add     :color,d0
+                        andn    :color,d6
+                        djnz    t1,#:loop               '+158
+
+                        jmp     #:colors                '+1, keep loading colors
+'
+'
+' Multiply t1 * t2 * 16 (t1, t2 = bytes)
+'
+multiply                shl     t2,#8+4-1
+
+                        mov     tile,#8
+:loop                   shr     t1,#1           wc
+        if_c            add     t1,t2
+                        djnz    tile,#:loop
+
+multiply_ret            ret                             '+37
+'
+'
+' Disabled - reset status, nap ~4ms, try again
+'
+disabled                mov     ctra,#0                 'reset ctra
+                        mov     vcfg,#0                 'reset video
+
+                        wrlong  outa,par                'set status to disabled
+
+                        rdlong  t1,#0                   'get CLKFREQ
+                        shr     t1,#8                   'nap for ~4ms
+                        min     t1,#3
+                        add     t1,cnt
+                        waitcnt t1,#0
+
+                        jmp     #entry                  'reload parameters
+'
+'
+' Initialized data
+'
+pllmin                  long    500_000                 'pll lowest output frequency
+pllmax                  long    128_000_000             'pll highest output frequency
+m8                      long    8_000_000               '*16 = 128MHz (pll vco max)
+m4                      long    4_000_000               '*16 = 64MHz (pll vco min)
+d0                      long    1 << 9 << 0
+d6                      long    1 << 9 << 6
+invisible               long    1
+visible                 long    2
+line                    long    $00060000
+lineinc                 long    $10000000
+linerot                 long    0
+vmask                   long    $01010101
+hmask                   long    $02020202
+colormask               long    $FCFCFCFC
+'
+'
+' Uninitialized data
+'
+taskptr                 res     1                       'tasks
+taskret                 res     1
+t1                      res     1
+t2                      res     1
+
+x                       res     1                       'display
+y                       res     1
+hf                      res     1
+hb                      res     1
+vf                      res     1
+vb                      res     1
+hx                      res     1
+vx                      res     1
+hc2x                    res     1
+screen                  res     1
+tile                    res     1
+pixels                  res     1
+lineadd                 res     1
+interlace               res     1
+hv                      res     1
+hvbase                  res     1
+h1                      res     1
+h2                      res     1
+'
+'
+' Parameter buffer
+'
+_enable                 res     1       '0/non-0        read-only
+_pins                   res     1       '%pppttt        read-only
+_mode                   res     1       '%tihv          read-only
+_screen                 res     1       '@word          read-only
+_colors                 res     1       '@long          read-only
+_ht                     res     1       '1+             read-only
+_vt                     res     1       '1+             read-only
+_hx                     res     1       '1+             read-only
+_vx                     res     1       '1+             read-only
+_ho                     res     1       '0+-            read-only
+_vo                     res     1       '0+-            read-only
+_hd                     res     1       '1+             read-only
+_hf                     res     1       '1+             read-only
+_hs                     res     1       '1+             read-only
+_hb                     res     1       '1+             read-only
+_vd                     res     1       '1+             read-only
+_vf                     res     1       '1+             read-only
+_vs                     res     1       '1+             read-only
+_vb                     res     1       '2+             read-only
+_rate                   res     1       '500_000+       read-only
+
+                        fit     colortable              'fit underneath colortable ($180-$1BF)
+
+
+''
+''___
+''VAR                   'VGA parameters - 21 contiguous longs
+''
+''  long  vga_status    '0/1/2 = off/visible/invisible      read-only
+''  long  vga_enable    '0/non-0 = off/on                   write-only
+''  long  vga_pins      '%pppttt = pins                     write-only
+''  long  vga_mode      '%tihv = tile,interlace,hpol,vpol   write-only
+''  long  vga_screen    'pointer to screen (words)          write-only
+''  long  vga_colors    'pointer to colors (longs)          write-only            
+''  long  vga_ht        'horizontal tiles                   write-only
+''  long  vga_vt        'vertical tiles                     write-only
+''  long  vga_hx        'horizontal tile expansion          write-only
+''  long  vga_vx        'vertical tile expansion            write-only
+''  long  vga_ho        'horizontal offset                  write-only
+''  long  vga_vo        'vertical offset                    write-only
+''  long  vga_hd        'horizontal display ticks           write-only
+''  long  vga_hf        'horizontal front porch ticks       write-only
+''  long  vga_hs        'horizontal sync ticks              write-only
+''  long  vga_hb        'horizontal back porch ticks        write-only
+''  long  vga_vd        'vertical display lines             write-only
+''  long  vga_vf        'vertical front porch lines         write-only
+''  long  vga_vs        'vertical sync lines                write-only
+''  long  vga_vb        'vertical back porch lines          write-only
+''  long  vga_rate      'tick rate (Hz)                     write-only
+''
+''The preceding VAR section may be copied into your code.
+''After setting variables, do start(@vga_status) to start driver.
+''
+''All parameters are reloaded each superframe, allowing you to make live
+''changes. To minimize flicker, correlate changes with vga_status.
+''
+''Experimentation may be required to optimize some parameters.
+''
+''Parameter descriptions:
+''  __________
+''  vga_status
+''
+''    driver sets this to indicate status:
+''      0: driver disabled (vga_enable = 0 or CLKFREQ < 16MHz)
+''      1: currently outputting invisible sync data
+''      2: currently outputting visible screen data
+''  __________
+''  vga_enable
+''
+''        0: disable (pins will be driven low, reduces power)
+''    non-0: enable
+''  ________
+''  vga_pins
+''
+''    bits 5..3 select pin group:
+''      %000: pins 7..0
+''      %001: pins 15..8
+''      %010: pins 23..16
+''      %011: pins 31..24
+''      %100: pins 39..32
+''      %101: pins 47..40
+''      %110: pins 55..48
+''      %111: pins 63..56
+''
+''    bits 2..0 select top pin within group
+''    for example: %01111 (15) will use pins %01000-%01111 (8-15)
+''  ________
+''  vga_mode
+''
+''    bit 3 selects between 16x16 and 16x32 pixel tiles:
+''      0: 16x16 pixel tiles (tileheight = 16)
+''      1: 16x32 pixel tiles (tileheight = 32)
+''
+''    bit 2 controls interlace:
+''      0: progressive scan (less flicker, good for motion, required for LCD monitors)
+''      1: interlaced scan (allows you to double vga_vt, good for text)
+''
+''    bits 1 and 0 select horizontal and vertical sync polarity, respectively
+''      0: active low
+''      1: active high
+''  __________
+''  vga_screen
+''
+''    pointer to words which define screen contents (left-to-right, top-to-bottom)
+''      number of words must be vga_ht * vga_vt
+''      each word has two bitfields: a 6-bit colorset ptr and a 10-bit pixelgroup ptr
+''        bits 15..10: select the colorset* for the associated pixel tile
+''        bits 9..0: select the pixelgroup** address %ppppppppppcccc00 (p=address, c=0..15)
+''
+''       * colorsets are longs which each define four 8-bit colors
+''
+''      ** pixelgroups are <tileheight> longs which define (left-to-right, top-to-bottom) the 2-bit
+''         (four color) pixels that make up a 16x16 or a 16x32 pixel tile
+''  __________
+''  vga_colors
+''
+''    pointer to longs which define colorsets
+''      number of longs must be 1..64
+''      each long has four 8-bit fields which define colors for 2-bit (four color) pixels
+''      first long's bottom color is also used as the screen background color
+''      8-bit color fields are as follows:
+''        bits 7..2: actual state of pins 7..2 within pin group*
+''        bits 1..0: don't care (used within driver for hsync and vsync)
+''
+''    * it is suggested that:
+''        bits/pins 7..6 are used for red
+''        bits/pins 5..4 are used for green
+''        bits/pins 3..2 are used for blue
+''      for each bit/pin set, sum 240 and 470-ohm resistors to form 75-ohm 1V signals
+''      connect signal sets to RED, GREEN, and BLUE on VGA connector
+''      always connect group pin 1 to HSYNC on VGA connector via 240-ohm resistor
+''      always connect group pin 0 to VSYNC on VGA connector via 240-ohm resistor
+''  ______
+''  vga_ht
+''
+''    horizontal number of pixel tiles - must be at least 1
+''  ______
+''  vga_vt
+''
+''    vertical number of pixel tiles - must be at least 1
+''  ______
+''  vga_hx
+''
+''    horizontal tile expansion factor - must be at least 1
+''
+''    make sure 16 * vga_ht * vga_hx + ||vga_ho is equal to or at least 16 less than vga_hd
+''  ______
+''  vga_vx
+''
+''    vertical tile expansion factor - must be at least 1
+''
+''    make sure <tileheight> * vga_vt * vga_vx + ||vga_vo does not exceed vga_vd
+''      (for interlace, use <tileheight> / 2 * vga_vt * vga_vx + ||vga_vo)
+''  ______
+''  vga_ho
+''
+''    horizontal offset in ticks - pos/neg value (0 recommended)
+''    shifts the display right/left
+''  ______
+''  vga_vo
+''
+''    vertical offset in lines - pos/neg value (0 recommended)
+''    shifts the display up/down
+''  ______
+''  vga_hd
+''
+''    horizontal display ticks
+''  ______
+''  vga_hf
+''
+''    horizontal front porch ticks
+''  ______
+''  vga_hs
+''
+''    horizontal sync ticks
+''  ______
+''  vga_hb
+''
+''    horizontal back porch ticks
+''  ______
+''  vga_vd
+''
+''    vertical display lines
+''  ______
+''  vga_vf
+''
+''    vertical front porch lines
+''  ______
+''  vga_vs
+''
+''    vertical sync lines
+''  ______
+''  vga_vb
+''
+''    vertical back porch lines
+''  ________
+''  vga_rate
+''
+''    tick rate in Hz
+''
+''    driver will limit value to be within 500KHz and 128MHz
+''    pixel rate (vga_rate / vga_hx) should be no more than CLKFREQ / 4
+
+{{
+
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │                                                            
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │ 
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}
\ No newline at end of file
diff --git a/samples/Propeller Spin/VocalTract.spin b/samples/Propeller Spin/VocalTract.spin
new file mode 100644
index 00000000..c70a75b9
--- /dev/null
+++ b/samples/Propeller Spin/VocalTract.spin	
@@ -0,0 +1,737 @@
+{{
+┌───────────────────────────────────────────┬────────────────┬───────────────────────────────────┬─────────────────┐
+│ Vocal Tract v1.1                          │ by Chip Gracey │ Copyright (c) 2006 Parallax, Inc. │ 28 October 2006 │
+├───────────────────────────────────────────┴────────────────┴───────────────────────────────────┴─────────────────┤
+│                                                                                                                  │
+│ This object synthesizes a human vocal tract in real-time. It requires one cog and at least 80 MHz.               │
+│                                                                                                                  │
+│ The vocal tract is controlled via 13 single-byte parameters which must reside in the parent object:              │
+│                                                                                                                  │
+│ VAR byte aa,ga,gp,vp,vr,f1,f2,f3,f4,na,nf,fa,ff    'vocal tract parameters                                       │
+│                                                                                                                  │
+│                                                                                                                  │
+│                        aa                                                                                        │
+│                  ┌────────────┐                                                                                  │
+│                  │ ASPIRATION ├──┐                                                                              │
+│                  └────────────┘   │     f1       f2       f3       f4      na   nf                               │
+│                                      ┌────┐   ┌────┐   ┌────┐   ┌────┐   ┌───────┐                              │
+│                                  +┣──┤ F1 ├──┤ F2 ├──┤ F3 ├──┤ F4 ├──┤ NASAL ├──┐                          │
+│                       ga   gp        └────┘   └────┘   └────┘   └────┘   └───────┘   │                          │
+│                     ┌─────────┐   │                                                                             │
+│                     │ GLOTTAL ├──┘                                                  +┣── OUTPUT                │
+│                     └────┬────┘                                          fa   ff                                │
+│                                                                      ┌───────────┐   │                          │
+│                       vp │ vr                                         │ FRICATION ├──┘                          │
+│                     ┌────┴────┐                                       └───────────┘                              │
+│                     │ VIBRATO │                                                                                  │
+│                     └─────────┘                                                                                  │
+│                                                                                                                  │
+│                                                                                                                  │
+│       ┌───────────┬──────────────────────┬─────────────┬────────────────────────────────────────────────┐        │
+│       │ parameter │ description          │ unit        │ notes                                          │        │
+│       ├───────────┼──────────────────────┼─────────────┼────────────────────────────────────────────────┤        │
+│       │    aa     │ aspiration amplitude │ 0..255      │ breath volume: silent..loud, linear            │        │
+│       │    ga     │ glottal amplitude    │ 0..255      │ voice volume: silent..loud, linear             │        │
+│       │    gp     │ glottal pitch        │ 1/48 octave │ voice pitch: 100 ─ 110.00Hz (musical note A2) │        │
+│       │    vp     │ vibrato pitch        │ 1/48 octave │ voice vibrato pitch: 48 ─ ± 1/2 octave swing  │        │
+│       │    vr     │ vibrato rate         │ 0.0763 Hz   │ voice vibrato rate: 52 ─ 4 Hz                 │        │
+│       │    f1     │ formant1 frequency   │ 19.53 Hz    │ 1st resonator frequency: 40 ─ 781 Hz          │        │
+│       │    f2     │ formant2 frequency   │ 19.53 Hz    │ 2nd resonator frequency: 56 ─ 1094 Hz         │        │
+│       │    f3     │ formant3 frequency   │ 19.53 Hz    │ 3rd resonator frequency: 128 ─ 2500 Hz        │        │
+│       │    f4     │ formant4 frequency   │ 19.53 Hz    │ 4th resonator frequency: 179 ─ 3496 Hz        │        │
+│       │    na     │ nasal amplitude      │ 0..255      │ anti-resonator level: off..on, linear          │        │
+│       │    nf     │ nasal frequency      │ 19.53 Hz    │ anti-resonator frequency: 102 ─ 1992 Hz       │        │
+│       │    fa     │ frication amplitude  │ 0..255      │ white noise volume: silent..loud, linear       │        │
+│       │    ff     │ frication frequency  │ 39.06 Hz    │ white noise frequency: 60 ─ 2344 Hz ("Sh")    │        │
+│       └───────────┴──────────────────────┴─────────────┴────────────────────────────────────────────────┘        │
+│                                                                                                                  │
+│ The parent object alternately modifies one or more of these parameters and then calls the go(time) method to     │
+│ queue the entire 13-parameter frame for feeding to the vocal tract. The vocal tract will load one queued frame   │
+│ after another and smoothly interpolate between them over specified amounts of time without interruption. Up to   │
+│ eight frames will be queued in order to relax the frame-generation timing requirement of the parent object. If   │
+│ eight frames are queued, the parent must then wait to queue another frame. If the vocal tract runs out of        │
+│ frames, it will continue generating samples based on the last frame. When a new frame is queued, it will         │
+│ immediately load it and begin inter-polating towards it.                                                         │                                    
+│                                                                                                                  │
+│ The vocal tract generates audio samples at a continuous rate of 20KHz. These samples can be output to pins via   │
+│ delta-modulation for RC filtering or direct transducer driving. An FM aural subcarrier can also be generated for │
+│ inclusion into a TV broadcast controlled by another cog. Regardless of any output mode, samples are always       │
+│ streamed into a special variable so that other objects can access them in real-time.                             │                                                           
+│                                                                                                                  │
+│ In order to achieve optimal sound quality, it is worthwhile to maximize amplitudes such as 'ga' to the point     │
+│ just shy of numerical overflow. Numerical overflow results in high-amplitude noise bursts which are quite        │
+│ disruptive. The closeness of 'f1'-'f4' and their relationship to 'gp' can greatly influence the amount of 'ga'   │
+│ that can be applied before overflow occurs. You must determine through experimentation what the limits are. By   │
+│ pushing 'ga' close to the overflow point, you will maximize the signal-to-noise ratio of the vocal tract,        │
+│ resulting in the highest quality sound. Once your vocal tract programming is complete, the attenuation level     │
+│ can then be used to reduce the overall output in 3dB steps while preserving the signal-to-noise ratio.           │                                       
+│                                                                                                                  │
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│ Revision History                                                                   v1.0 released 26 October 2006 │
+│                                                                                                                  │
+│ v1.1  If the vocal tract runs out of frames, its internal parameters will now be brought all the way to the      │
+│       last frame's values. Before, they were left one interpolation point shy, and then set to the last frame's  │
+│       values at the start of the next frame. For continuous frames this was trivial, but it posed a problem      │
+│       during frame gaps because the internal parameters would get stalled at transition points just shy of the   │
+│       last frame's values. This change makes the vocal tract behave more sensibly during frame gaps.             │                                                                        
+│                                                                                                                  │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘                                     
+                                                                                                                                            
+}}                                                                                                                                          
+CON                                                                                                                                         
+                                                                                                                                            
+  frame_buffers = 8                                     'frame buffers (2n)                                                                
+                                                                                                                                            
+  frame_bytes = 3 {for stepsize} + 13 {for aa..ff}      '16 bytes per frame                                                                 
+  frame_longs = frame_bytes / 4                         '4 longs per frame                                                                  
+                                                                                                                                            
+  frame_buffer_bytes = frame_bytes * frame_buffers                                                                                          
+  frame_buffer_longs = frame_longs * frame_buffers                                                                                          
+                                                                                                                                            
+                                                                                                                                            
+VAR                                                                                                                                         
+                                                                                                                                            
+  long  cog, tract, pace                                                                                                                    
+                                                                                                                                            
+  long  index, attenuation, sample                      '3 longs       ...must                                                              
+  long  dira_, dirb_, ctra_, ctrb_, frqa_, cnt_         '6 longs       ...be                                                                
+  long  frames[frame_buffer_longs]                      'many longs    ...contiguous                                                        
+                                                                                                                                            
+                                                                                                                                            
+PUB start(tract_ptr, pos_pin, neg_pin, fm_offset) : okay                                                                                    
+                                                                                                                                            
+'' Start vocal tract driver - starts a cog                                                                                                  
+'' returns false if no cog available                                                                                                        
+''                                                                                                                                          
+''   tract_ptr = pointer to vocal tract parameters (13 bytes)                                                                               
+''     pos_pin = positive delta-modulation pin (-1 to disable)                                                                              
+''     neg_pin = negative delta-modulation pin (pos_pin must also be enabled, -1 to disable)                                                
+''   fm_offset = offset frequency for fm aural subcarrier generation (-1 to disable, 4_500_000 for NTSC)                                    
+                                                                                                                                            
+  'Reset driver                                                                                                                             
+  stop                                                                                                                                      
+                                                                                                                                            
+  'Remember vocal tract parameters pointer                                                                                                  
+  tract := tract_ptr                                                                                                                        
+                                                                                                                                            
+  'Initialize pace to 100%                                                                                                                  
+  pace := 100                                                                                                                               
+                                                                                                                                            
+  'If delta-modulation pin(s) enabled, ready output(s) and ready ctrb for duty mode                                                         
+  if pos_pin > -1                                                                                                                           
+    dira_[pos_pin >> 5 & 1] |= |< pos_pin                                                                                                   
+    ctrb_ := $18000000 + pos_pin & $3F                                                                                                      
+    if neg_pin > -1                                                                                                                         
+      dira_[neg_pin >> 5 & 1] |= |< neg_pin                                                                                                 
+      ctrb_ += $04000000 + (neg_pin & $3F) << 9                                                                                             
+                                                                                                                                            
+  'If fm offset is valid, ready ctra for pll mode with divide-by-16 (else disabled)                                                         
+  if fm_offset > -1                                                                                                                         
+    ctra_ := $05800000                                                                                                                      
+                                                                                                                                            
+  'Ready frqa value for fm offset                                                                                                           
+  repeat 33                                                                                                                                 
+    frqa_ <<= 1                                                                                                                             
+    if fm_offset => clkfreq                                                                                                                 
+      fm_offset -= clkfreq                                                                                                                  
+      frqa_++                                                                                                                               
+    fm_offset <<= 1                                                                                                                         
+                                                                                                                                            
+  'Ready 20KHz sample period                                                                                                                
+  cnt_ := clkfreq / 20_000                                                                                                                  
+                                                                                                                                            
+  'Launch vocal tract cog                                                                                                                   
+  return cog := cognew(@entry, @attenuation) + 1                                                                                            
+                                                                                                                                            
+                                                                                                                                            
+PUB stop                                                                                                                                    
+                                                                                                                                            
+'' Stop vocal tract driver - frees a cog                                                                                                    
+                                                                                                                                            
+  'If already running, stop vocal tract cog                                                                                                 
+  if cog                                                                                                                                    
+    cogstop(cog~ -  1)                                                                                                                      
+                                                                                                                                            
+  'Reset variables and buffers
+  longfill(@index, 0, constant(3 + 6 + frame_buffer_longs))
+
+
+PUB set_attenuation(level)
+
+'' Set master attenuation level (0..7, initially 0)
+
+  attenuation := level
+
+
+PUB set_pace(percentage)
+
+'' Set pace to some percentage (initially 100)
+
+  pace := percentage
+
+
+PUB go(time)
+
+'' Queue current parameters to transition over time
+''
+''   actual time = integer(time * 100 / pace) #> 2 * 700µs (at least 1400µs, see set_pace)
+
+  'Wait until frame available (first long will be zeroed)
+  repeat while frames[index]
+
+  'Load parameters into frame
+  bytemove(@frames[index] + 3, tract, 13)
+
+  'Write stepsize into frame (non-0 alerts vocal tract that frame is ready)
+  frames[index] |= $01000000 / (time * 100 / pace #> 2)
+
+  'Increment frame index
+  index := (index + frame_longs) & constant(frame_buffer_longs - 1)
+
+
+PUB full : status
+
+'' Returns true if the parameter queue is full
+'' (useful for checking if "go" would have to wait) 
+
+  return frames[index]
+
+
+PUB empty : status | i
+
+'' Returns true if the parameter queue is empty
+'' (useful for detecting when the vocal tract is finished)
+
+  repeat i from 0 to constant(frame_buffers - 1)
+    if frames[i * frame_longs]
+      return {false}
+  return true
+  
+ 
+PUB sample_ptr : ptr
+
+'' Returns the address of the long which receives the audio samples in real-time
+'' (signed 32-bit values updated at 20KHz)
+
+  return @sample
+  
+
+PUB aural_id : id
+
+'' Returns the id of the cog executing the vocal tract algorithm
+'' (for connecting a broadcast tv driver with the aural subcarrier)
+
+  return cog - 1
+
+
+DAT
+
+' ┌──────────────────┐
+' │  Initialization  │
+' └──────────────────┘
+
+entry                   org
+
+:zero                   mov     reserves,#0             'zero all reserved data
+                        add     :zero,d0
+                        djnz    clear_cnt,#:zero
+
+                        mov     t1,#2*15                'assemble 15 multiply steps into reserves
+:minst                  mov     mult_steps,mult_step    '(saves hub memory)
+                        add     :minst,d0s0             
+                        test    t1,#1           wc
+        if_c            sub     :minst,#2
+                        djnz    t1,#:minst
+                        mov     mult_ret,antilog_ret    'write 'ret' after last instruction
+
+                        mov     t1,#13                  'assemble 13 cordic steps into reserves
+:cstep                  mov     t2,#8                   '(saves hub memory)
+:cinst                  mov     cordic_steps,cordic_step
+                        add     :cinst,d0s0
+                        djnz    t2,#:cinst
+                        sub     :cinst,#8
+                        add     cordic_dx,#1
+                        add     cordic_dy,#1
+                        add     cordic_a,#1
+                        djnz    t1,#:cstep                       
+                        mov     cordic_ret,antilog_ret  'write 'ret' over last instruction
+
+                        mov     t1,par                  'get dira/dirb/ctra/ctrb
+                        add     t1,#2*4
+                        mov     t2,#4
+:regs                   rdlong  dira,t1
+                        add     t1,#4
+                        add     :regs,d0
+                        djnz    t2,#:regs
+
+                        rdlong  frqa_center,t1          'get frqa center
+                        
+                        add     t1,#4                   'get cnt ticks
+                        rdlong  cnt_ticks,t1
+                        
+                        mov     cnt_value,cnt           'prepare for initial waitcnt
+                        add     cnt_value,cnt_ticks
+
+
+' ┌────────────────────┐
+' │  Vocal Tract Loop  │
+' └────────────────────┘
+
+' Wait for next sample period, then output sample
+
+loop                    waitcnt cnt_value,cnt_ticks     'wait for sample period
+
+                        rdlong  t1,par                  'perform master attenuation
+                        sar     x,t1                    
+
+                        mov     t1,x                    'update fm aural subcarrier for tv broadcast
+                        sar     t1,#10
+                        add     t1,frqa_center
+                        mov     frqa,t1
+
+                        mov     t1,x                    'update duty cycle output for pin driving
+                        add     t1,h80000000
+                        mov     frqb,t1
+
+                        mov     t1,par                  'update sample receiver in main memory
+                        add     t1,#1*4
+                        wrlong  x,t1
+
+' White noise source
+
+                        test    lfsr,lfsr_taps  wc      'iterate lfsr three times
+                        rcl     lfsr,#1
+                        test    lfsr,lfsr_taps  wc
+                        rcl     lfsr,#1
+                        test    lfsr,lfsr_taps  wc
+                        rcl     lfsr,#1
+
+' Aspiration
+
+                        mov     t1,aa                   'aspiration amplitude
+                        mov     t2,lfsr
+                        call    #mult
+                        
+                        sar     t1,#8                   'set x
+                        mov     x,t1
+
+' Vibrato
+
+                        mov     t1,vr                   'vibrato rate
+                        shr     t1,#10
+                        add     vphase,t1
+
+                        mov     t1,vp                   'vibrato pitch
+                        mov     t2,vphase
+                        call    #sine
+                        
+                        add     t1,gp                   'sum glottal pitch (+) into vibrato pitch (+/-)
+
+' Glottal pulse
+
+                        shr     t1,#2                   'divide final pitch by 3 to mesh with                                                                   
+                        mov     t2,t1                   '...12 notes/octave musical scale
+                        shr     t2,#2                   '(multiply by %0.0101010101010101)
+                        add     t1,t2                                                             
+                        mov     t2,t1
+                        shr     t2,#4
+                        add     t1,t2
+                        mov     t2,t1
+                        shr     t2,#8
+                        add     t1,t2
+
+                        add     t1,tune                 'tune scale so that gp=100 produces 110.00Hz (A2)
+
+                        call    #antilog                'convert pitch (log frequency) to phase delta
+                        add     gphase,t2              
+
+                        mov     t1,gphase               'convert phase to glottal pulse sample
+                        call    #antilog    
+                        sub     t2,h40000000
+                        mov     t1,ga
+                        call    #sine
+
+                        sar     t1,#6                   'add to x
+                        add     x,t1
+
+' Vocal tract formants
+
+                        mov     y,#0                    'reset y
+
+                        mov     a,f1                    'formant1, sum and rotate (x,y) 
+                        add     x,f1x                   
+                        add     y,f1y
+                        call    #cordic
+                        mov     f1x,x
+                        mov     f1y,y
+
+                        mov     a,f2                    'formant2, sum and rotate (x,y) 
+                        add     x,f2x                   
+                        add     y,f2y
+                        call    #cordic
+                        mov     f2x,x
+                        mov     f2y,y
+
+                        mov     a,f3                    'formant3, sum and rotate (x,y) 
+                        add     x,f3x                  
+                        add     y,f3y
+                        call    #cordic
+                        mov     f3x,x
+                        mov     f3y,y
+               
+                        mov     a,f4                    'formant4, sum and rotate (x,y)    
+                        add     x,f4x                  
+                        add     y,f4y
+                        call    #cordic
+                        mov     f4x,x
+                        mov     f4y,y
+
+' Nasal anti-formant
+
+                        add     nx,x                    'subtract from x (nx negated)
+
+                        mov     a,nf                    'nasal frequency
+                        call    #cordic
+
+                        mov     t1,na                   'nasal amplitude
+                        mov     t2,x
+                        call    #mult
+                        
+                        mov     x,nx                    'restore x
+                        neg     nx,t1                   'negate nx
+                        
+' Frication
+
+                        mov     t1,lfsr                 'phase noise
+                        sar     t1,#3
+                        add     fphase,t1
+                        sar     t1,#1
+                        add     fphase,t1
+
+                        mov     t1,ff                   'frication frequency
+                        shr     t1,#1
+                        add     fphase,t1
+
+                        mov     t1,fa                   'frication amplitude
+                        mov     t2,fphase
+                        call    #sine
+                        
+                        add     x,t1                    'add to x
+
+' Handle frame
+
+                        jmp     :ret                    'run segment of frame handler, return to loop
+
+
+' ┌─────────────────┐
+' │  Frame Handler  │
+' └─────────────────┘
+
+:ret                    long    :wait                   'pointer to next frame handler routine
+
+
+:wait                   jmpret  :ret,#loop              '(6 or 17.5 cycles)
+                        mov     frame_ptr,par           'check for next frame
+                        add     frame_ptr,#8*4          'point past miscellaneous data
+                        add     frame_ptr,frame_index   'point to start of frame
+                        rdlong  step_size,frame_ptr     'get stepsize
+                        and     step_size,h00FFFFFF  wz 'isolate stepsize and check if not 0
+        if_nz           jmp     #:next                  'if not 0, next frame ready
+        
+
+                        mov     :final1,:finali         'no frame ready, ready to finalize parameters
+                        mov     frame_cnt,#13           'iterate aa..ff
+
+:final                  jmpret  :ret,#loop              '(13.5 or 4 cycles)
+:final1                 mov     par_curr,par_next       'current parameter = next parameter
+                        add     :final1,d0s0            'update pointers
+                        djnz    frame_cnt,#:final       'another parameter?
+                        
+                        jmp     #:wait                  'check for next frame
+
+
+:next                   add     step_size,#1            'next frame ready, insure accurate accumulation
+                        mov     step_acc,step_size      'initialize step accumulator                    
+
+
+                        movs    :set1,#par_next         'ready to get parameters and steps for aa..ff
+                        movd    :set2,#par_curr   
+                        movd    :set3,#par_next
+                        movd    :set4,#par_step
+                        add     frame_ptr,#3            'point to first parameter
+                        mov     frame_cnt,#13           'iterate aa..ff
+
+:set                    jmpret  :ret,#loop              '(19.5 or 46.5 cycles)
+                        rdbyte  t1,frame_ptr            'get new parameter
+                        shl     t1,#24                  'msb justify
+:set1                   mov     t2,par_next             'get next parameter
+:set2                   mov     par_curr,t2             'current parameter = next parameter
+:set3                   mov     par_next,t1             'next parameter = new parameter
+                        sub     t1,t2           wc      'get next-current delta with sign in c            
+                        negc    t1,t1                   'make delta absolute (by c, not msb)
+                        rcl     vscl,#1         wz, nr  'save sign into nz (vscl unaffected)
+
+                        mov     t2,#8                   'multiply delta by step size
+:mult                   shl     t1,#1           wc
+        if_c            add     t1,step_size
+                        djnz    t2,#:mult
+
+:set4                   negnz    par_step,t1            'set signed step
+
+                        add     :set1,#1                'update pointers for next parameter+step
+                        add     :set2,d0
+                        add     :set3,d0
+                        add     :set4,d0
+                        add     frame_ptr,#1
+                        djnz    frame_cnt,#:set         'another parameter?
+
+
+:stepframe              jmpret  :ret,#loop              '(47.5 or 8 cycles)
+                        mov     :step1,:stepi           'ready to step parameters
+                        mov     frame_cnt,#13           'iterate aa..ff
+                        
+:step                   jmpret  :ret,#loop              '(3 or 4 cycles)
+:step1                  add     par_curr,par_step       'step parameter
+                        add     :step1,d0s0             'update pointers for next parameter+step
+                        djnz    frame_cnt,#:step        'another parameter?
+                        
+                        add     step_acc,step_size      'accumulate frame steps
+                        test    step_acc,h01000000  wc  'check for frame steps done
+        if_nc           jmp     #:stepframe             'another frame step?
+
+        
+                        sub     frame_ptr,#frame_bytes  'zero stepsize in frame to signal frame done
+                        wrlong  vscl,frame_ptr
+
+                        add     frame_index,#frame_bytes'point to next frame
+                        and     frame_index,#frame_buffer_bytes - 1
+                        
+                        jmp     #:wait                  'check for next frame
+
+
+:finali                 mov     par_curr,par_next       'instruction used to finalize parameters                 
+:stepi                  add     par_curr,par_step       'instruction used to step parameters               
+
+
+' ┌────────────────────┐
+' │  Math Subroutines  │
+' └────────────────────┘
+
+' Antilog
+'
+'   in:         t1 = log (top 4 bits = whole number, next 11 bits = fraction)
+'
+'   out:        t2 = antilog ($00010000..$FFEA0000)
+
+antilog                 mov     t2,t1                   
+                        shr     t2,#16                  'position 11-bit fraction
+                        shr     t1,#16+12               'position 4-bit whole number
+                        and     t2,h00000FFE            'get table offset
+                        or      t2,h0000D000            'get table base
+                        rdword  t2,t2                   'lookup fractional antilog
+                        or      t2,h00010000            'insert leading bit
+                        shl     t2,t1                   'shift up by whole number
+
+antilog_ret             ret
+
+
+' Scaled sine
+'
+'   in:         t1 = unsigned scale (15 top bits used)
+'               t2 = angle (13 top bits used)
+'
+'   out:        t1 = 17-bit * 15-bit scaled sine ($80014000..$7FFEC000)
+
+sine                    shr     t2,#32-13               'get 13-bit angle
+                        test    t2,h00001000    wz      'get sine quadrant 3|4 into nz
+                        test    t2,h00000800    wc      'get sine quadrant 2|4 into c
+                        negc    t2,t2                   'if sine quadrant 2|4, negate table offset
+                        or      t2,h00007000            'insert sine table base address >> 1
+                        shl     t2,#1                   'shift left to get final word address
+                        rdword  t2,t2                   'read sine word from table
+                        negnz   t2,t2                   'if quadrant 3|4, negate word
+                        shl     t2,#15                  'msb-justify result
+                                                        'multiply follows...
+
+' Multiply
+'                                                                                             
+'   in:         t1 = unsigned multiplier (15 top bits used)
+'               t2 = signed multiplicand (17 top bits used)
+'
+'   out:        t1 = 32-bit signed product
+
+mult                    shr     t1,#32-15               'position unsigned multiplier
+
+                        sar     t2,#15                  'position signed multiplicand
+                        shl     t2,#15-1
+
+                        jmp     #mult_steps             'do multiply steps
+
+
+mult_step               sar     t1,#1           wc      'multiply step that gets assembled into reserves (x15)
+        if_c            add     t1,t2                   
+
+
+' Cordic rotation
+'
+'   in:          a = 0 to <90 degree angle (~13 top bits used)
+'              x,y = signed coordinates     
+'
+'   out:       x,y = scaled and rotated signed coordinates
+
+cordic                  sar     x,#1                    'multiply (x,y) by %0.10011001 (0.60725 * 0.984)                   
+                        mov     t1,x                    '...for cordic pre-scaling and slight damping         
+                        sar     t1,#3
+                        add     x,t1
+                        mov     t1,x
+                        sar     t1,#4
+                        add     x,t1
+                        
+                        sar     y,#1
+                        mov     t1,y
+                        sar     t1,#3
+                        add     y,t1
+                        mov     t1,y
+                        sar     t1,#4
+                        add     y,t1
+
+                        mov     t1,x                    'do first cordic step
+                        sub     x,y
+                        add     y,t1
+                        sub     a,h80000000     wc
+
+                        jmp     #cordic_steps+1         'do subsequent cordic steps (skip first instruction)
+
+
+cordic_step             mov     a,a             wc      'cordic step that gets assembled into reserves (x13)
+                        mov     t1,y                    
+cordic_dx               sar     t1,#1                   '(source incremented for each step)
+                        mov     t2,x
+cordic_dy               sar     t2,#1                   '(source incremented for each step)
+                        sumnc   x,t1
+                        sumc    y,t2
+cordic_a                sumnc   a,cordic_delta          '(source incremented for each step)
+
+
+' ┌────────────────┐
+' │  Defined Data  │
+' └────────────────┘
+
+tune                    long    $66920000               'scale tuned to 110.00Hz at gp=100 (manually calibrated)
+
+lfsr                    long    1                       'linear feedback shift register for noise generation
+lfsr_taps               long    $80061000
+
+cordic_delta            long    $4B901476               'cordic angle deltas (first is h80000000)
+                        long    $27ECE16D
+                        long    $14444750
+                        long    $0A2C350C
+                        long    $05175F85
+                        long    $028BD879                                       
+                        long    $0145F154
+                        long    $00A2F94D
+                        long    $00517CBB
+                        long    $0028BE60
+                        long    $00145F30
+                        long    $000A2F98
+
+h80000000               long    $80000000               'miscellaneous constants greater than 9 bits
+h40000000               long    $40000000
+h01000000               long    $01000000
+h00FFFFFF               long    $00FFFFFF
+h00010000               long    $00010000        
+h0000D000               long    $0000D000
+h00007000               long    $00007000
+h00001000               long    $00001000
+h00000FFE               long    $00000FFE
+h00000800               long    $00000800
+
+d0                      long    $00000200               'destination/source field increments
+d0s0                    long    $00000201
+
+clear_cnt               long    $1F0 - reserves         'number of reserved registers to clear on startup
+
+
+' ┌──────────────────────────────────────────────────┐
+' │  Undefined Data (zeroed by initialization code)  │
+' └──────────────────────────────────────────────────┘
+
+reserves
+
+frqa_center             res     1                       'reserved registers that get cleared on startup
+
+cnt_ticks               res     1
+cnt_value               res     1
+
+frame_index             res     1
+frame_ptr               res     1
+frame_cnt               res     1
+
+step_size               res     1
+step_acc                res     1
+                                                
+vphase                  res     1
+gphase                  res     1
+fphase                  res     1
+
+f1x                     res     1
+f1y                     res     1
+f2x                     res     1
+f2y                     res     1
+f3x                     res     1
+f3y                     res     1
+f4x                     res     1
+f4y                     res     1
+nx                      res     1
+
+a                       res     1
+x                       res     1
+y                       res     1
+
+t1                      res     1
+t2                      res     1
+
+par_curr                                                '*** current parameters
+aa                      res     1                       'aspiration amplitude
+ga                      res     1                       'glottal amplitude       
+gp                      res     1                       'glottal pitch
+vp                      res     1                       'vibrato pitch           
+vr                      res     1                       'vibrato rate            
+f1                      res     1                       'formant1 frequency      
+f2                      res     1                       'formant2 frequency
+f3                      res     1                       'formant3 frequency
+f4                      res     1                       'formant4 frequency
+na                      res     1                       'nasal amplitude
+nf                      res     1                       'nasal frequency
+fa                      res     1                       'frication amplitude
+ff                      res     1                       'frication frequency
+
+par_next                res     13                      '*** next parameters
+par_step                res     13                      '*** parameter steps
+
+
+mult_steps              res     2 * 15                  'assembly area for multiply steps w/ret
+mult_ret
+sine_ret                res     1
+
+cordic_steps            res     8 * 13 - 1              'assembly area for cordic steps w/ret
+cordic_ret              res     1
+
+{{
+
+┌──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┐
+│                                                   TERMS OF USE: MIT License                                                  │                                                            
+├──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┤
+│Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation    │ 
+│files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy,    │
+│modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software│
+│is furnished to do so, subject to the following conditions:                                                                   │
+│                                                                                                                              │
+│The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.│
+│                                                                                                                              │
+│THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE          │
+│WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR         │
+│COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,   │
+│ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                         │
+└──────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────────┘
+}}
\ No newline at end of file
diff --git a/samples/PureScript/Control.Arrow.purs b/samples/PureScript/Control.Arrow.purs
new file mode 100644
index 00000000..56ae846f
--- /dev/null
+++ b/samples/PureScript/Control.Arrow.purs
@@ -0,0 +1,34 @@
+module Control.Arrow where
+
+import Data.Tuple
+
+class Arrow a where
+  arr :: forall b c. (b -> c) -> a b c
+  first :: forall b c d. a b c -> a (Tuple b d) (Tuple c d)
+
+instance arrowFunction :: Arrow (->) where
+  arr f = f
+  first f (Tuple b d) = Tuple (f b) d
+
+second :: forall a b c d. (Category a, Arrow a) => a b c -> a (Tuple d b) (Tuple d c)
+second f = arr swap >>> first f >>> arr swap
+
+swap :: forall a b. Tuple a b -> Tuple b a
+swap (Tuple x y) = Tuple y x
+
+infixr 3 ***
+infixr 3 &&&
+
+(***) :: forall a b b' c c'. (Category a, Arrow a) => a b c -> a b' c' -> a (Tuple b b') (Tuple c c')
+(***) f g = first f >>> second g
+
+(&&&) :: forall a b b' c c'. (Category a, Arrow a) => a b c -> a b c' -> a b (Tuple c c')
+(&&&) f g = arr (\b -> Tuple b b) >>> (f *** g)
+
+class ArrowZero a where
+  zeroArrow :: forall b c. a b c
+
+infixr 5 <+>
+
+class ArrowPlus a where
+  (<+>) :: forall b c. a b c -> a b c -> a b c
diff --git a/samples/PureScript/Data.Foreign.purs b/samples/PureScript/Data.Foreign.purs
new file mode 100644
index 00000000..d3d64f59
--- /dev/null
+++ b/samples/PureScript/Data.Foreign.purs
@@ -0,0 +1,111 @@
+module Data.Foreign
+  ( Foreign(..)
+  , ForeignParser(ForeignParser)
+  , parseForeign
+  , parseJSON
+  , ReadForeign
+  , read
+  , prop
+  ) where
+
+import Prelude
+import Data.Array
+import Data.Either
+import Data.Maybe
+import Data.Tuple
+import Data.Traversable
+
+foreign import data Foreign :: *
+
+foreign import fromString
+  "function fromString (str) { \
+  \  try { \
+  \    return _ps.Data_Either.Right(JSON.parse(str)); \
+  \  } catch (e) { \
+  \    return _ps.Data_Either.Left(e.toString()); \
+  \  } \
+  \}" :: String -> Either String Foreign
+
+foreign import readPrimType
+  "function readPrimType (typeName) { \
+  \  return function (value) { \
+  \    if (toString.call(value) == '[object ' + typeName + ']') { \
+  \      return _ps.Data_Either.Right(value);\
+  \    } \
+  \    return _ps.Data_Either.Left('Value is not a ' + typeName + ''); \
+  \  }; \
+  \}" :: forall a. String -> Foreign -> Either String a
+
+foreign import readMaybeImpl
+  "function readMaybeImpl (value) { \
+  \  return value === undefined || value === null ? _ps.Data_Maybe.Nothing : _ps.Data_Maybe.Just(value); \
+  \}" :: forall a. Foreign -> Maybe Foreign
+
+foreign import readPropImpl
+  "function readPropImpl (k) { \
+  \  return function (obj) { \
+  \    return _ps.Data_Either.Right(obj[k]);\
+  \  }; \
+  \}" :: forall a. String -> Foreign -> Either String Foreign
+
+foreign import showForeignImpl
+  "var showForeignImpl = JSON.stringify;" :: Foreign -> String
+
+instance showForeign :: Prelude.Show Foreign where
+  show = showForeignImpl
+
+data ForeignParser a = ForeignParser (Foreign -> Either String a)
+
+parseForeign :: forall a. ForeignParser a -> Foreign -> Either String a
+parseForeign (ForeignParser p) x = p x
+
+parseJSON :: forall a. (ReadForeign a) => String -> Either String a
+parseJSON json = fromString json >>= parseForeign read
+
+instance monadForeignParser :: Prelude.Monad ForeignParser where
+  return x = ForeignParser \_ -> Right x
+  (>>=) (ForeignParser p) f = ForeignParser \x -> case p x of
+      Left err -> Left err
+      Right x' -> parseForeign (f x') x
+
+instance applicativeForeignParser :: Prelude.Applicative ForeignParser where
+  pure x = ForeignParser \_ -> Right x
+  (<*>) (ForeignParser f) (ForeignParser p) = ForeignParser \x -> case f x of
+      Left err -> Left err
+      Right f' -> f' <$> p x
+
+instance functorForeignParser :: Prelude.Functor ForeignParser where
+  (<$>) f (ForeignParser p) = ForeignParser \x -> f <$> p x
+
+class ReadForeign a where
+  read :: ForeignParser a
+
+instance readString :: ReadForeign String where
+  read = ForeignParser $ readPrimType "String"
+
+instance readNumber :: ReadForeign Number where
+  read = ForeignParser $ readPrimType "Number"
+
+instance readBoolean :: ReadForeign Boolean where
+  read = ForeignParser $ readPrimType "Boolean"
+
+instance readArray :: (ReadForeign a) => ReadForeign [a] where
+  read =
+    let arrayItem (Tuple i x) = case parseForeign read x of
+      Right result -> Right result
+      Left err -> Left $ "Error reading item at index " ++ (show i) ++ ":\n" ++ err
+    in
+    (ForeignParser $ readPrimType "Array") >>= \xs -> 
+      ForeignParser \_ -> arrayItem `traverse` (zip (range 0 (length xs)) xs)
+
+instance readMaybe :: (ReadForeign a) => ReadForeign (Maybe a) where
+  read = (ForeignParser $ Right <<< readMaybeImpl) >>= \x -> 
+    ForeignParser \_ -> case x of
+      Just x' -> parseForeign read x' >>= return <<< Just
+      Nothing -> return Nothing
+
+prop :: forall a. (ReadForeign a) => String -> ForeignParser a
+prop p = (ForeignParser \x -> readPropImpl p x) >>= \x -> 
+  ForeignParser \_ -> case parseForeign read x of
+    Right result -> Right result
+    Left err -> Left $ "Error reading property '" ++ p ++ "':\n" ++ err
diff --git a/samples/PureScript/Data.Map.purs b/samples/PureScript/Data.Map.purs
new file mode 100644
index 00000000..0733fac3
--- /dev/null
+++ b/samples/PureScript/Data.Map.purs
@@ -0,0 +1,90 @@
+module Data.Map
+  ( Map(),
+    empty,
+    singleton,
+    insert,
+    lookup,
+    delete,
+    alter,
+    toList,
+    fromList,
+    union,
+    map
+  ) where
+
+import qualified Prelude as P
+
+import Data.Array (concat)
+import Data.Foldable (foldl)
+import Data.Maybe
+import Data.Tuple
+
+data Map k v = Leaf | Branch { key :: k, value :: v, left :: Map k v, right :: Map k v }
+
+instance eqMap :: (P.Eq k, P.Eq v) => P.Eq (Map k v) where
+  (==) m1 m2 = toList m1 P.== toList m2
+  (/=) m1 m2 = P.not (m1 P.== m2)
+
+instance showMap :: (P.Show k, P.Show v) => P.Show (Map k v) where
+  show m = "fromList " P.++ P.show (toList m)
+
+empty :: forall k v. Map k v
+empty = Leaf
+
+singleton :: forall k v. k -> v -> Map k v
+singleton k v = Branch { key: k, value: v, left: empty, right: empty }
+
+insert :: forall k v. (P.Eq k, P.Ord k) => k -> v -> Map k v -> Map k v
+insert k v Leaf = singleton k v
+insert k v (Branch b@{ key = k1 }) | k P.== k1 = Branch (b { key = k, value = v })
+insert k v (Branch b@{ key = k1 }) | k P.< k1 = Branch (b { left = insert k v b.left })
+insert k v (Branch b) = Branch (b { right = insert k v b.right })
+
+lookup :: forall k v. (P.Eq k, P.Ord k) => k -> Map k v -> Maybe v
+lookup k Leaf = Nothing
+lookup k (Branch { key = k1, value = v }) | k P.== k1 = Just v
+lookup k (Branch { key = k1, left = left }) | k P.< k1 = lookup k left
+lookup k (Branch { right = right }) = lookup k right
+
+findMinKey :: forall k v. (P.Ord k) => Map k v -> Tuple k v
+findMinKey (Branch { key = k, value = v, left = Leaf }) = Tuple k v
+findMinKey (Branch b) = findMinKey b.left
+
+delete :: forall k v. (P.Eq k, P.Ord k) => k -> Map k v -> Map k v
+delete k Leaf = Leaf
+delete k (Branch b@{ key = k1, left = Leaf }) | k P.== k1 =
+  case b of
+    { left = Leaf } -> b.right
+    { right = Leaf } -> b.left
+    _ -> glue b.left b.right
+delete k (Branch b@{ key = k1 }) | k P.< k1 = Branch (b { left = delete k b.left })
+delete k (Branch b) = Branch (b { right = delete k b.right })
+
+alter :: forall k v. (P.Eq k, P.Ord k) => (Maybe v -> Maybe v) -> k -> Map k v -> Map k v
+alter f k Leaf = case f Nothing of
+  Nothing -> Leaf
+  Just v -> singleton k v
+alter f k (Branch b@{ key = k1, value = v }) | k P.== k1 = case f (Just v) of
+  Nothing -> glue b.left b.right
+  Just v' -> Branch (b { value = v' })
+alter f k (Branch b@{ key = k1 }) | k P.< k1 = Branch (b { left = alter f k b.left })
+alter f k (Branch b) = Branch (b { right = alter f k b.right })
+
+glue :: forall k v. (P.Eq k, P.Ord k) => Map k v -> Map k v -> Map k v
+glue left right = 
+  let Tuple minKey root = findMinKey right in
+  Branch { key: minKey, value: root, left: left, right: delete minKey right }
+
+toList :: forall k v. Map k v -> [Tuple k v]
+toList Leaf = []
+toList (Branch b) = toList b.left `concat` [Tuple b.key b.value] `concat` toList b.right
+
+fromList :: forall k v. (P.Eq k, P.Ord k) => [Tuple k v] -> Map k v
+fromList = foldl (\m (Tuple k v) -> insert k v m) empty
+
+union :: forall k v. (P.Eq k, P.Ord k) => Map k v -> Map k v -> Map k v
+union m1 m2 = foldl (\m (Tuple k v) -> insert k v m) m2 (toList m1)
+
+map :: forall k v1 v2. (P.Eq k, P.Ord k) => (v1 -> v2) -> Map k v1 -> Map k v2
+map _ Leaf = Leaf
+map f (Branch b) = Branch (b { value = f b.value, left = map f b.left, right = map f b.right })
diff --git a/samples/PureScript/ReactiveJQueryTest.purs b/samples/PureScript/ReactiveJQueryTest.purs
new file mode 100644
index 00000000..d1d941dc
--- /dev/null
+++ b/samples/PureScript/ReactiveJQueryTest.purs
@@ -0,0 +1,128 @@
+module ReactiveJQueryTest where
+
+import Prelude ((+), (++), (<$>), (<*>), ($), (<<<), flip, return, show)
+import Control.Monad
+import Control.Monad.Eff
+import Control.Monad.JQuery
+import Control.Reactive
+import Control.Reactive.JQuery
+import Data.Array (map, head, length)
+import Data.Foldable
+import Data.Foreign
+import Data.Maybe
+import Data.Monoid
+import Data.Traversable
+import Debug.Trace
+import Global (parseInt)
+
+main = do
+  personDemo
+  todoListDemo
+
+greet firstName lastName = "Hello, " ++ firstName ++ " " ++ lastName ++ "!"
+
+personDemo = do
+  -- Create new reactive variables to hold the user's names
+  firstName <- newRVar "John"
+  lastName <- newRVar "Smith"
+
+  -- Get the document body
+  b <- body
+
+  -- Create a text box for the first name
+  firstNameDiv <- create "<div>"
+  firstNameInput <- create "<input>"
+  "First Name: " `appendText` firstNameDiv
+  firstNameInput `append` firstNameDiv
+  firstNameDiv `append` b
+
+  -- Create a text box for the last name
+  lastNameDiv <- create "<div>"
+  lastNameInput <- create "<input>"
+  "Last Name: " `appendText` lastNameDiv
+  lastNameInput `append` lastNameDiv
+  lastNameDiv `append` b
+
+  -- Bind the text box values to the name variables
+  bindValueTwoWay firstName firstNameInput
+  bindValueTwoWay lastName lastNameInput
+
+  -- Create a paragraph to display a greeting
+  greeting <- create "<p>"
+  { color: "red" } `css` greeting
+  greeting `append` b
+
+  -- Bind the text property of the greeting paragraph to a computed property
+  let greetingC = greet <$> toComputed firstName <*> toComputed lastName
+  bindTextOneWay greetingC greeting
+
+todoListDemo = do
+  -- Get the document body
+  b <- body
+
+  -- Create an array
+  arr <- newRArray
+
+  text1 <- newRVar "Learn PureScript"
+  comp1 <- newRVar false
+  insertRArray arr { text: text1, completed: comp1 } 0
+  
+  ul <- create "<ul>"
+
+  -- Bind the ul to the array
+  bindArray arr ul $ \entry indexR -> do
+    li <- create "<li>"
+
+    completedInput <- create "<input>"
+    setAttr "type" "checkbox" completedInput
+    completedInput `append` li
+    sub1 <- bindCheckedTwoWay entry.completed completedInput
+    
+    textInput <- create "<input>"
+    textInput `append` li
+    sub2 <- bindValueTwoWay entry.text textInput
+
+    btn <- create "<button>"
+    "Remove" `appendText` btn
+    flip (on "click") btn $ do
+      index <- readRVar indexR
+      removeRArray arr index
+    btn `append` li
+
+    return { el: li, subscription: sub1 <> sub2 }
+
+  ul `append` b
+
+  -- Add button
+  newEntryDiv <- create "<div>"
+  btn <- create "<button>"
+  "Add" `appendText` btn
+  btn `append` newEntryDiv
+  newEntryDiv `append` b
+
+  flip (on "click") btn $ do
+    text <- newRVar ""
+    completed <- newRVar false
+    arr' <- readRArray arr
+    insertRArray arr { text: text, completed: completed } (length arr')
+
+  -- Create a paragraph to display the next task
+  nextTaskLabel <- create "<p>"
+  nextTaskLabel `append` b
+
+  let nextTask = do
+    task <- head <$> toComputedArray arr
+    case task of
+      Nothing -> return "Done!"
+      Just { text = text } -> (++) "Next task: " <$> toComputed text
+  bindTextOneWay nextTask nextTaskLabel
+
+  -- Create a paragraph to display the task counter
+  counterLabel <- create "<p>"
+  counterLabel `append` b
+
+  let counter = (flip (++) " tasks remaining") <<< show <$> do
+    rs <- toComputedArray arr
+    cs <- map (\c -> if c then 0 else 1) <$> traverse (\entry -> toComputed entry.completed) rs
+    return $ foldl (+) 0 cs
+  bindTextOneWay counter counterLabel
diff --git a/samples/Python/AdditiveWave.pyde b/samples/Python/AdditiveWave.pyde
new file mode 100644
index 00000000..d02f15a0
--- /dev/null
+++ b/samples/Python/AdditiveWave.pyde
@@ -0,0 +1,63 @@
+"""
+Additive Wave
+by Daniel Shiffman. 
+
+Create a more complex wave by adding two waves together. 
+"""
+
+xspacing = 8    # How far apart should each horizontal location be spaced
+maxwaves = 4    # total # of waves to add together
+theta = 0.0
+
+amplitude = []  # Height of wave
+# Value for incrementing X, to be calculated as a function of period and
+# xspacing
+dx = []
+yvalues = []
+
+
+def setup():
+    size(640, 360)
+    frameRate(30)
+    colorMode(RGB, 255, 255, 255, 100)
+    w = width + 16
+    for i in range(maxwaves):
+        amplitude.append(random(10, 30))
+        period = random(100, 300)  # How many pixels before the wave repeats
+        dx.append((TWO_PI / period) * xspacing)
+    for _ in range(w / xspacing + 1):
+        yvalues.append(0.0)
+
+
+def draw():
+    background(0)
+    calcWave()
+    renderWave()
+
+
+def calcWave():
+    # Increment theta (try different values for 'angular velocity' here
+    theta += 0.02
+    # Set all height values to zero
+    for i in range(len(yvalues)):
+        yvalues[i] = 0
+    # Accumulate wave height values
+    for j in range(maxwaves):
+        x = theta
+        for i in range(len(yvalues)):
+            # Every other wave is cosine instead of sine
+            if j % 2 == 0:
+                yvalues[i] += sin(x) * amplitude[j]
+            else:
+                yvalues[i] += cos(x) * amplitude[j]
+            x += dx[j]
+
+
+def renderWave():
+    # A simple way to draw the wave with an ellipse at each location
+    noStroke()
+    fill(255, 50)
+    ellipseMode(CENTER)
+    for x, v in enumerate(yvalues):
+        ellipse(x * xspacing, height / 2 + v, 16, 16)
+
diff --git a/samples/Python/Cinema4DPythonPlugin.pyp b/samples/Python/Cinema4DPythonPlugin.pyp
new file mode 100644
index 00000000..30c2aa78
--- /dev/null
+++ b/samples/Python/Cinema4DPythonPlugin.pyp
@@ -0,0 +1,241 @@
+#
+# Cinema 4D Python Plugin Source file
+# https://github.com/nr-plugins/nr-xpresso-alignment-tools
+#
+
+# coding: utf-8
+#
+# Copyright (C) 2012, Niklas Rosenstein
+# Licensed under the GNU General Public License
+#
+# XPAT - XPresso Alignment Tools
+# ==============================
+#
+# The XPAT plugin provides tools for aligning nodes in the Cinema 4D
+# XPresso Editor, improving readability of complex XPresso set-ups
+# immensively.
+#
+# Requirements:
+# - MAXON Cinema 4D R13+
+# - Python `c4dtools` library. Get it from
+#   http://github.com/NiklasRosenstein/c4dtools
+#
+# Author:  Niklas Rosenstein <rosensteinniklas@gmail.com>
+# Version: 1.1 (01/06/2012)
+
+import os
+import sys
+import json
+import c4d
+import c4dtools
+import itertools
+
+from c4d.modules import graphview as gv
+from c4dtools.misc import graphnode
+
+res, importer = c4dtools.prepare(__file__, __res__)
+settings = c4dtools.helpers.Attributor({
+    'options_filename': res.file('config.json'),
+})
+
+def align_nodes(nodes, mode, spacing):
+    r"""
+    Aligns the passed nodes horizontally and apply the minimum spacing
+    between them.
+    """
+
+    modes = ['horizontal', 'vertical']
+    if not nodes:
+        return
+    if mode not in modes:
+        raise ValueError('invalid mode, choices are: ' + ', '.join(modes))
+
+    get_0 = lambda x: x.x
+    get_1 = lambda x: x.y
+    set_0 = lambda x, v: setattr(x, 'x', v)
+    set_1 = lambda x, v: setattr(x, 'y', v)
+
+    if mode == 'vertical':
+        get_0, get_1 = get_1, get_0
+        set_0, set_1 = set_1, set_0
+
+    nodes = [graphnode.GraphNode(n) for n in nodes]
+    nodes.sort(key=lambda n: get_0(n.position))
+    midpoint = graphnode.find_nodes_mid(nodes)
+
+    # Apply the spacing between the nodes relative to the coordinate-systems
+    # origin. We can offset them later because we now the nodes' midpoint
+    # already.
+    first_position = nodes[0].position
+    new_positions = []
+    prev_offset = 0
+    for node in nodes:
+        # Compute the relative position of the node.
+        position = node.position
+        set_0(position, get_0(position) - get_0(first_position))
+
+        # Obtain it's size and check if the node needs to be re-placed.
+        size = node.size
+        if get_0(position) < prev_offset:
+            set_0(position, prev_offset)
+            prev_offset += spacing + get_0(size)
+        else:
+            prev_offset = get_0(position) + get_0(size) + spacing
+
+        set_1(position, get_1(midpoint))
+        new_positions.append(position)
+
+    # Center the nodes again.
+    bbox_size = prev_offset - spacing
+    bbox_size_2 = bbox_size * 0.5
+    for node, position in itertools.izip(nodes, new_positions):
+        # TODO: Here is some issue with offsetting the nodes. Some value
+        # dependent on the spacing must be added here to not make the nodes
+        # move horizontally/vertically although they have already been
+        # aligned.
+        set_0(position, get_0(midpoint) + get_0(position) - bbox_size_2 + spacing)
+        node.position = position
+
+def align_nodes_shortcut(mode, spacing):
+    master = gv.GetMaster(0)
+    if not master:
+        return
+
+    root = master.GetRoot()
+    if not root:
+        return
+
+    nodes = graphnode.find_selected_nodes(root)
+    if nodes:
+        master.AddUndo()
+        align_nodes(nodes, mode, spacing)
+        c4d.EventAdd()
+
+    return True
+
+class XPAT_Options(c4dtools.helpers.Attributor):
+    r"""
+    This class organizes the options for the XPAT plugin, i.e.
+    validating, loading and saving.
+    """
+
+    defaults = {
+        'hspace': 50,
+        'vspace': 20,
+    }
+
+    def __init__(self, filename=None):
+        super(XPAT_Options, self).__init__()
+        self.load(filename)
+
+    def load(self, filename=None):
+        r"""
+        Load the options from file pointed to by filename. If filename
+        is None, it defaults to the filename defined in options in the
+        global scope.
+        """
+
+        if filename is None:
+            filename = settings.options_filename
+
+        if os.path.isfile(filename):
+            self.dict_ = self.defaults.copy()
+            with open(filename, 'rb') as fp:
+                self.dict_.update(json.load(fp))
+        else:
+            self.dict_ = self.defaults.copy()
+            self.save()
+
+    def save(self, filename=None):
+        r"""
+        Save the options defined in XPAT_Options instance to HD.
+        """
+
+        if filename is None:
+            filename = settings.options_filename
+
+        values = dict((k, v) for k, v in self.dict_.iteritems()
+                      if k in self.defaults)
+        with open(filename, 'wb') as fp:
+            json.dump(values, fp)
+
+class XPAT_OptionsDialog(c4d.gui.GeDialog):
+    r"""
+    This class implements the behavior of the XPAT options dialog,
+    taking care of storing the options on the HD and loading them
+    again on startup.
+    """
+
+    # c4d.gui.GeDialog
+
+    def CreateLayout(self):
+        return self.LoadDialogResource(res.DLG_OPTIONS)
+
+    def InitValues(self):
+        self.SetLong(res.EDT_HSPACE, options.hspace)
+        self.SetLong(res.EDT_VSPACE, options.vspace)
+        return True
+
+    def Command(self, id, msg):
+        if id == res.BTN_SAVE:
+            options.hspace = self.GetLong(res.EDT_HSPACE)
+            options.vspace = self.GetLong(res.EDT_VSPACE)
+            options.save()
+            self.Close()
+        return True
+
+class XPAT_Command_OpenOptionsDialog(c4dtools.plugins.Command):
+    r"""
+    This Cinema 4D CommandData plugin opens the XPAT options dialog
+    when being executed.
+    """
+
+    def __init__(self):
+        super(XPAT_Command_OpenOptionsDialog, self).__init__()
+        self._dialog = None
+
+    @property
+    def dialog(self):
+        if not self._dialog:
+            self._dialog = XPAT_OptionsDialog()
+        return self._dialog
+
+    # c4dtools.plugins.Command
+
+    PLUGIN_ID = 1029621
+    PLUGIN_NAME = res.string.XPAT_COMMAND_OPENOPTIONSDIALOG()
+    PLUGIN_HELP = res.string.XPAT_COMMAND_OPENOPTIONSDIALOG_HELP()
+
+    # c4d.gui.CommandData
+
+    def Execute(self, doc):
+        return self.dialog.Open(c4d.DLG_TYPE_MODAL)
+
+class XPAT_Command_AlignHorizontal(c4dtools.plugins.Command):
+
+    PLUGIN_ID = 1029538
+    PLUGIN_NAME = res.string.XPAT_COMMAND_ALIGNHORIZONTAL()
+    PLUGIN_ICON = res.file('xpresso-align-h.png')
+    PLUGIN_HELP = res.string.XPAT_COMMAND_ALIGNHORIZONTAL_HELP()
+
+    def Execute(self, doc):
+        align_nodes_shortcut('horizontal', options.hspace)
+        return True
+
+class XPAT_Command_AlignVertical(c4dtools.plugins.Command):
+
+    PLUGIN_ID = 1029539
+    PLUGIN_NAME = res.string.XPAT_COMMAND_ALIGNVERTICAL()
+    PLUGIN_ICON = res.file('xpresso-align-v.png')
+    PLUGIN_HELP = res.string.XPAT_COMMAND_ALIGNVERTICAL_HELP()
+
+    def Execute(self, doc):
+        align_nodes_shortcut('vertical', options.vspace)
+        return True
+
+options = XPAT_Options()
+
+if __name__ == '__main__':
+    c4dtools.plugins.main()
+
+
diff --git a/samples/Python/MoveEye.pyde b/samples/Python/MoveEye.pyde
new file mode 100644
index 00000000..310c8efb
--- /dev/null
+++ b/samples/Python/MoveEye.pyde
@@ -0,0 +1,29 @@
+"""
+ * Move Eye. 
+ * by Simon Greenwold.
+ * 
+ * The camera lifts up (controlled by mouseY) while looking at the same point.
+ """
+
+
+def setup():
+    size(640, 360, P3D)
+    fill(204)
+
+
+def draw():
+    lights()
+    background(0)
+
+    # Change height of the camera with mouseY
+    camera(30.0, mouseY, 220.0,  # eyeX, eyeY, eyeZ
+           0.0, 0.0, 0.0,        # centerX, centerY, centerZ
+           0.0, 1.0, 0.0)        # upX, upY, upZ
+
+    noStroke()
+    box(90)
+    stroke(255)
+    line(-100, 0, 0, 100, 0, 0)
+    line(0, -100, 0, 0, 100, 0)
+    line(0, 0, -100, 0, 0, 100)
+
diff --git a/samples/R/R-qgis-extension.rsx b/samples/R/R-qgis-extension.rsx
new file mode 100644
index 00000000..adf59e67
--- /dev/null
+++ b/samples/R/R-qgis-extension.rsx
@@ -0,0 +1,5 @@
+##polyg=vector
+##numpoints=number 10
+##output=output vector
+##[Example scripts]=group
+pts=spsample(polyg,numpoints,type="regular")
diff --git a/samples/R/df.residual.r b/samples/R/df.residual.r
new file mode 100644
index 00000000..a7a00686
--- /dev/null
+++ b/samples/R/df.residual.r
@@ -0,0 +1,29 @@
+
+df.residual.mira <- function(object, ...) {
+    fit <- object$analyses[[1]]
+    return(df.residual(fit))
+}
+
+df.residual.lme <- function(object, ...) {
+    return(object$fixDF[["X"]][1])
+}
+
+df.residual.mer <- function(object, ...) {
+    return(sum(object@dims[2:4] * c(1, -1, -1)) + 1)
+}
+
+df.residual.default <- function(object, q = 1.3, ...) {
+    df <- object$df.residual
+    if (!is.null(df)) 
+        return(df)
+    
+    mk <- try(c <- coef(object), silent = TRUE)
+    mn <- try(f <- fitted(object), silent = TRUE)
+    if (inherits(mk, "try-error") | inherits(mn, "try-error")) 
+        return(NULL)
+    n <- ifelse(is.data.frame(f) | is.matrix(f), nrow(f), length(f))
+    k <- length(c)
+    if (k == 0 | n == 0) 
+        return(NULL)
+    return(max(1, n - q * k))
+}
diff --git a/samples/R/filenames/expr-dist b/samples/R/filenames/expr-dist
new file mode 100755
index 00000000..1f7ab280
--- /dev/null
+++ b/samples/R/filenames/expr-dist
@@ -0,0 +1,101 @@
+#!/usr/bin/env Rscript
+
+# Copyright (c) 2013 Daniel S. Standage, released under MIT license
+#
+# expr-dist: plot distributions of expression values before and after
+#            normalization; visually confirm that normalization worked
+#            as expected
+#
+# Program input is a matrix of expression values, each row corresponding to a
+# molecule (gene, transcript, etc) and each row corresponding to that molecule's
+# expression level or abundance. The program expects the rows and columns to be
+# named, and was tested primarily on output produced by the
+# 'rsem-generate-data-matrix' script distributed with the RSEM package.
+#
+# The program plots the distributions of the logged expression values by sample
+# as provided, then normalizes the values, and finally plots the distribution of
+# the logged normalized expression values by sample. The expectation is that all
+# samples' distributions will have a similar shape but different medians prior
+# to normalization, and that post normalization they will all have an identical
+# median to facilitate cross-sample comparison.
+
+
+# MedianNorm function borrowed from the EBSeq library version 1.1.6
+# See http://www.bioconductor.org/packages/devel/bioc/html/EBSeq.html
+MedianNorm <- function(data)
+{
+  geomeans <- exp( rowMeans(log(data)) )
+  apply(data, 2, function(cnts) median((cnts/geomeans)[geomeans > 0]))
+}
+
+library("getopt")
+print_usage <- function(file=stderr())
+{
+  cat("
+expr-dist: see source code for full description
+Usage: expr-dist [options] < expr-matrix.txt
+  Options:
+    -h|--help:          print this help message and exit
+    -o|--out: STRING    prefix for output files; default is 'expr-dist'
+    -r|--res: INT       resolution (dpi) of generated graphics; default is 150
+    -t|--height: INT    height (pixels) of generated graphics; default is 1200
+    -w|--width: INT     width (pixels) of generated graphics; default is 1200
+    -y|--ylim: REAL     the visible range of the Y axis depends on the first
+                        distribution plotted; if other distributions are getting
+                        cut off, use this setting to override the default\n\n")
+}
+
+spec <- matrix( c("help",   'h', 0, "logical",
+                  "out",    'o', 1, "character",
+                  "res",    'r', 1, "integer",
+                  "height", 't', 1, "integer",
+                  "width",  'w', 1, "integer",
+                  "ylim",   'y', 1, "double"),
+                byrow=TRUE, ncol=4)
+opt  <- getopt(spec)
+if(!is.null(opt$help))
+{
+  print_usage(file=stdout())
+  q(status=1)
+}
+if(is.null(opt$height)) { opt$height <- 1200           }
+if(is.null(opt$out))    { opt$out    <- "expr-dist"    }
+if(is.null(opt$res))    { opt$res    <- 150            }
+if(is.null(opt$width))  { opt$width  <- 1200           }
+if(!is.null(opt$ylim))  { opt$ylim   <- c(0, opt$ylim) }
+
+# Load data, determine number of samples
+data  <- read.table(file("stdin"), header=TRUE, sep="\t", quote="")
+nsamp <- dim(data)[2] - 1
+data  <- data[,1:nsamp+1]
+
+# Plot distribution of expression values before normalization
+outfile <- sprintf("%s-median.png", opt$out)
+png(outfile, height=opt$height, width=opt$width, res=opt$res)
+h <- hist(log(data[,1]), plot=FALSE)
+plot(h$mids, h$density, type="l", col=rainbow(nsamp)[1], main="",
+     xlab="Log expression value", ylab="Proportion of molecules", ylim=opt$ylim)
+for(i in 2:nsamp)
+{
+  h <- hist(log(data[,i]), plot=FALSE)
+  lines(h$mids, h$density, col=rainbow(nsamp)[i])
+}
+devnum <- dev.off()
+
+# Normalize by median
+size.factors <- MedianNorm(data.matrix(data))
+data.norm <- t(apply(data, 1, function(x){ x / size.factors }))
+
+# Plot distribution of normalized expression values
+outfile <- sprintf("%s-median-norm.png", opt$out)
+png(outfile, height=opt$height, width=opt$width, res=opt$res)
+h <- hist(log(data.norm[,1]), plot=FALSE)
+plot(h$mids, h$density, type="l", col=rainbow(nsamp)[1], main="",
+     xlab="Log normalized expression value", ylab="Proportion of molecules",
+     ylim=opt$ylim)
+for(i in 2:nsamp)
+{
+  h <- hist(log(data.norm[,i]), plot=FALSE)
+  lines(h$mids, h$density, col=rainbow(nsamp)[i])
+}
+devnum <- dev.off()
diff --git a/samples/R/import.r b/samples/R/import.r
new file mode 100644
index 00000000..dbccce17
--- /dev/null
+++ b/samples/R/import.r
@@ -0,0 +1,201 @@
+#' Import a module into the current scope
+#'
+#' \code{module = import('module')} imports a specified module and makes its
+#' code available via the environment-like object it returns.
+#'
+#' @param module an identifier specifying the full module path
+#' @param attach if \code{TRUE}, attach the newly loaded module to the object
+#'      search path (see \code{Details})
+#' @param attach_operators if \code{TRUE}, attach operators of module to the
+#'      object search path, even if \code{attach} is \code{FALSE}
+#' @return the loaded module environment (invisible)
+#'
+#' @details Modules are loaded in an isolated environment which is returned, and
+#' optionally attached to the object search path of the current scope (if
+#' argument \code{attach} is \code{TRUE}).
+#' \code{attach} defaults to \code{FALSE}. However, in interactive code it is
+#' often helpful to attach packages by default. Therefore, in interactive code
+#' invoked directly from the terminal only (i.e. not within modules),
+#' \code{attach} defaults to the value of \code{options('import.attach')}, which
+#' can be set to \code{TRUE} or \code{FALSE} depending on the user’s preference.
+#'
+#' \code{attach_operators} causes \emph{operators} to be attached by default,
+#' because operators can only be invoked in R if they re found in the search
+#' path. Not attaching them therefore drastically limits a module’s usefulness.
+#'
+#' Modules are searched in the module search path \code{options('import.path')}.
+#' This is a vector of paths to consider, from the highest to the lowest
+#' priority. The current directory is \emph{always} considered first. That is,
+#' if a file \code{a.r} exists both in the current directory and in a module
+#' search path, the local file \code{./a.r} will be loaded.
+#'
+#' Module names can be fully qualified to refer to nested paths. See
+#' \code{Examples}.
+#'
+#' @note Unlike for packages, attaching happens \emph{locally}: if
+#' \code{import} is executed in the global environment, the effect is the same.
+#' Otherwise, the imported module is inserted as the parent of the current
+#' \code{environment()}. When used (globally) \emph{inside} a module, the newly
+#' imported module is only available inside the module’s search path, not
+#' outside it (nor in other modules which might be loaded).
+#'
+#' @examples
+#' # `a.r` is a file in the local directory containing a function `f`.
+#' a = import('a')
+#' a$f()
+#'
+#' # b/c.r is a file in path `b`, containing a function `g`.
+#' import('b/c', attach = TRUE)
+#' g() # No module name qualification necessary
+#'
+#' @seealso \code{unload}
+#' @seealso \code{reload}
+#' @seealso \code{module_name}
+#' @export
+import = function (module, attach, attach_operators = TRUE) {
+    module = substitute(module)
+    stopifnot(inherits(module, 'name'))
+
+    if (missing(attach)) {
+        attach = if (interactive() && is.null(module_name()))
+            getOption('import.attach', FALSE)
+        else
+            FALSE
+    }
+
+    stopifnot(class(attach) == 'logical' && length(attach) == 1)
+
+    module_path = try(find_module(module), silent = TRUE)
+
+    if (inherits(module_path, 'try-error'))
+        stop(attr(module_path, 'condition')$message)
+
+    containing_modules = module_init_files(module, module_path)
+    mapply(do_import, names(containing_modules), containing_modules)
+
+    mod_ns = do_import(as.character(module), module_path)
+    module_parent = parent.frame()
+    mod_env = exhibit_namespace(mod_ns, as.character(module), module_parent)
+
+    if (attach) {
+        if (identical(module_parent, .GlobalEnv))
+            attach(mod_env, name = environmentName(mod_env))
+        else
+            parent.env(module_parent) = mod_env
+    }
+    else if (attach_operators)
+        export_operators(mod_ns, module_parent)
+
+    invisible(mod_env)
+}
+
+do_import = function (module_name, module_path) {
+    if (is_module_loaded(module_path))
+        return(get_loaded_module(module_path))
+
+    # The namespace contains a module’s content. This schema is very much like
+    # R package organisation.
+    # A good resource for this is:
+    # <http://obeautifulcode.com/R/How-R-Searches-And-Finds-Stuff/>
+    namespace = structure(new.env(parent = .BaseNamespaceEnv),
+                          name = paste('namespace', module_name, sep = ':'),
+                          path = module_path,
+                          class = c('namespace', 'environment'))
+    local(source(attr(environment(), 'path'), chdir = TRUE, local = TRUE),
+          envir = namespace)
+    cache_module(namespace)
+    namespace
+}
+
+exhibit_namespace = function (namespace, name, parent) {
+    exported_functions = lsf.str(namespace)
+    # Skip one parent environment because this module is hooked into the chain
+    # between the calling environment and its ancestor, thus sitting in its
+    # local object search path.
+    structure(list2env(sapply(exported_functions, get, envir = namespace),
+                       parent = parent.env(parent)),
+              name = paste('module', name, sep = ':'),
+              path = module_path(namespace),
+              class = c('module', 'environment'))
+}
+
+export_operators = function (namespace, parent) {
+    # `$` cannot be overwritten, but it is generic so S3 variants of it can be
+    # defined. We therefore test it as well.
+    ops = c('+', '-', '*', '/', '^', '**', '&', '|', ':', '::', ':::', '$', '=',
+            '<-', '<<-', '==', '<', '<=', '>', '>=', '!=', '~', '&&', '||')
+
+    is_predefined = function (f) f %in% ops
+
+    is_op = function (f) {
+        prefix = strsplit(f, '\\.')[[1]][1]
+        is_predefined(prefix) || grepl('^%.*%$', prefix)
+    }
+
+    operators = Filter(is_op, lsf.str(namespace))
+    name = module_name(namespace)
+    # Skip one parent environment because this module is hooked into the chain
+    # between the calling environment and its ancestor, thus sitting in its
+    # local object search path.
+    op_env = structure(list2env(sapply(operators, get, envir = namespace),
+                                parent = parent.env(parent)),
+                       name = paste('operators', name, sep = ':'),
+                       path = module_path(namespace),
+                       class = c('module', 'environment'))
+
+    if (identical(parent, .GlobalEnv))
+        attach(op_env, name = environmentName(op_env))
+    else
+        parent.env(parent) = op_env
+}
+
+#' Unload a given module
+#'
+#' Unset the module variable that is being passed as a parameter, and remove the
+#' loaded module from cache.
+#' @param module reference to the module which should be unloaded
+#' @note Any other references to the loaded modules remain unchanged, and will
+#' still work. However, subsequently importing the module again will reload its
+#' source files, which would not have happened without \code{unload}.
+#' Unloading modules is primarily useful for testing during development, and
+#' should not be used in production code.
+#'
+#' \code{unload} does not currently detach environments.
+#' @seealso \code{import}
+#' @seealso \code{reload}
+#' @export
+unload = function (module) {
+    stopifnot(inherits(module, 'module'))
+    module_ref = as.character(substitute(module))
+    rm(list = module_path(module), envir = .loaded_modules)
+    # unset the module reference in its scope, i.e. the caller’s environment or
+    # some parent thereof.
+    rm(list = module_ref, envir = parent.frame(), inherits = TRUE)
+}
+
+#' Reload a given module
+#'
+#' Remove the loaded module from the cache, forcing a reload. The newly reloaded
+#' module is assigned to the module reference in the calling scope.
+#' @param module reference to the module which should be unloaded
+#' @note Any other references to the loaded modules remain unchanged, and will
+#' still work. Reloading modules is primarily useful for testing during
+#' development, and should not be used in production code.
+#'
+#' \code{reload} does not work correctly with attached environments.
+#' @seealso \code{import}
+#' @seealso \code{unload}
+#' @export
+reload = function (module) {
+    stopifnot(inherits(module, 'module'))
+    module_ref = as.character(substitute(module))
+    module_path = module_path(module)
+    module_name = module_name(module)
+    rm(list = module_path, envir = .loaded_modules)
+    #' @TODO Once we have `attach`, need also to take care of the search path
+    #' and whatnot.
+    mod_ns = do_import(module_name, module_path)
+    module_parent = parent.frame()
+    mod_env = exhibit_namespace(mod_ns, module_ref, module_parent)
+    assign(module_ref, mod_env, envir = module_parent, inherits = TRUE)
+}
diff --git a/samples/R/scholar.Rd b/samples/R/scholar.Rd
new file mode 100644
index 00000000..8a593b38
--- /dev/null
+++ b/samples/R/scholar.Rd
@@ -0,0 +1,25 @@
+\docType{package}
+\name{scholar}
+\alias{scholar}
+\alias{scholar-package}
+\title{scholar}
+\source{
+  The package reads data from
+  \url{http://scholar.google.com}.  Dates and citation
+  counts are estimated and are determined automatically by
+  a computer program. Use at your own risk.
+}
+\description{
+  The \code{scholar} package provides functions to extract
+  citation data from Google Scholar.  There are also
+  convenience functions for comparing multiple scholars and
+  predicting h-index scores based on past publication
+  records.
+}
+\note{
+  A complementary set of Google Scholar functions can be
+  found at
+  \url{http://biostat.jhsph.edu/~jleek/code/googleCite.r}.
+  The \code{scholar} package was developed independently.
+}
+
diff --git a/samples/RMarkdown/example.rmd b/samples/RMarkdown/example.rmd
new file mode 100644
index 00000000..edd7c2d5
--- /dev/null
+++ b/samples/RMarkdown/example.rmd
@@ -0,0 +1,10 @@
+# An example RMarkdown
+
+Some text.
+
+## A graphic in R
+
+```{r}
+plot(1:10)
+hist(rnorm(10000))
+```
\ No newline at end of file
diff --git a/samples/Rebol/GCP-datatypes.r b/samples/Rebol/GCP-datatypes.r
new file mode 100644
index 00000000..04c2e1e2
--- /dev/null
+++ b/samples/Rebol/GCP-datatypes.r
@@ -0,0 +1,217 @@
+Rebol [Title: "Google Code Prettify Datatypes"]
+
+re: func [s /i] [rejoin compose ["/^^" (s) "/" either i ["i"][""]]]   ; little helper for standard grammar regex used
+
+date-re: "\d{1,2}[\-\/](\d{1,2}|\w{3,9})[\-\/]\d{2,4}"  ; naive date! regex
+
+string-re: {\"(?:[^^\"\\]|\\[\s\S])*(?:\"|$)}
+brace-re:  "\{(?:[^^\}\^^]|\^^[\s\S])*(?:\}|$)"   ; TODO - could build this from string-re
+block-re:  "\[(?:[^^\]\\]|\\[\s\S])*(?:\]|$)"
+tag-re:    "\<(?:[^^\>\\]|\\[\s\S])*(?:\>|$)"   ; TODO - could build this from string-re
+number-re: "(?:[.,]\d+|\d+['\d]*(?:[.,]\d*)?)(?:e[-+]?\d+)?"
+word-re: "[A-Za-z=\-?!_*+.`~&][A-Za-z0-9=\-!?_*+.`~&]*"
+
+|: "|"
+
+types: compose/deep [
+    ;  comments
+    comment! [
+        PR_LITERAL
+    ;      comment_shebang -- Script tag (shebang!)
+        (re/i "#![^^\r\n]+")
+    ;      comment_line -- A line comment that starts with ;
+        (re ";[^^\r\n]*")
+    ;      comment_multiline_string -- Multi-line comment
+        (re ["comment\s*" brace-re])
+    ;      comment_multiline_block
+        (re ["comment\s*" block-re])
+    ]
+    ;  type_literal
+    
+    ;  logic
+    logic! [
+        PR_LITERAL
+        (re "#\[(?:true|false|yes|no|on|off)\]")
+    ]
+    
+    ;  none
+    none! [
+        PR_LITERAL
+        (re "#\[none\]")
+    ]
+    
+    ;  strings
+    ;      character
+    char! [
+        PR_LITERAL
+        (re/i "#^"(?:[^^^^^"]|\^^(?:[\^^^"\/\-A-Z]|\((?:[0-9A-F]{2,4}|tab|newline)\)))^"")
+    ]
+    
+    string! [
+        PR_LITERAL
+    ;      string_quoted
+        (re "^"(?:[^^^"\\]|\\[\s\S])*(?:^"|$)")
+    ;      string_multiline -- Multi-line string {braces} - allowed within:  { ^{ ^}
+        (re brace-re)
+    ]
+    
+    ;      string_tag_comment
+    comment! [
+        PR_LITERAL
+        (re "<!--(?:[^^-]|-(?!->))+-->")
+    ]
+    
+    ;      string_tag
+    tag! [
+        PR_LITERAL
+        (re "<[^^^"<=>\x00\x09\x0A\x0D\x20\u005D\u007F][^^>\x00]*>")
+    ]
+    
+    file! [
+        PR_LITERAL
+    ;      string_file
+        (re "%(?:[a-zA-Z?!.*&|=_~0-9'+\-,:\/\\@]|%[0-9A-F]{2})+")
+    ;      string_file_quoted
+        (re "%^"(?:[^^^"])*^"")
+    ]
+    
+    url! [
+        PR_LITERAL
+    ;      string_url
+        (re "[a-zA-Z?!.*&|=_~][a-zA-Z?!.*&|=_~0-9'+-,]*:(?:[a-zA-Z?!.*&|=_~0-9'+\-,:\/@]|%[0-9A-F]{2})+")
+    ]
+    
+    email! [
+        PR_LITERAL
+    ;      string_email
+        (re "[\w\d\+\-\.]+\@[\w\d\+\-\.]+\b")
+    ]
+    
+    binary! [
+        PR_LITERAL
+    ;      binary_base_two
+        (re "2#\{(?:[01\r\n\t ])*\}")
+    ;      binary_base_sixty_four
+        (re "64#\{(?:[0-9+\/a-yA-Z=\r\n\t ])*\}")
+    ;      binary_base_sixteen
+        (re/i "(?:16)?#\{(?:[0-9a-f\r\n\t ])*\}")
+    ]
+    
+    issue! [
+        PR_LITERAL
+    ;      string_issue
+        (re "#[\w\d\-]+(?=[\s\n\t]|$)")
+    ]
+    
+    ;  values
+    date! [
+        PR_LITERAL
+    ;      value_date
+        (re [date-re "\/\d{1,2}\:\d{1,2}\:\d{1,2}(\+|\-)\d{1,2}\:(00|30)\b"])
+        (re [date-re "\/\d{1,2}\:\d{1,2}\:\d{1,2}\b"])
+        (re [date-re "\b"])
+        (re "\d{2,4}[\/\-](\d{1,2}|\w{3,9})[\/\-]\d{1,2}(?:\/\d{1,2}\:\d{1,2}(?:\:\d{1,2})?(?:[-+]\d{1,2}:[03]0)?)?")
+    ]
+    
+    time! [
+        PR_LITERAL
+    ;      value_time
+        (re "[-+]?\d{1,2}:\d{1,2}(?::\d{1,2}(?:\.\d+)?)?\b")
+    ]
+    
+    tuple! [
+        PR_LITERAL
+    ;      value_tuple
+        (re "\d+(?:\.\d+){2,9}")
+    ]
+    
+    pair! [
+        PR_LITERAL
+    ;      value_pair
+        (re/i ["[-+]?" number-re "x[-+]?" number-re])
+    ]
+    ;  [PR['PR_LITERAL'], /^\d(?:[\.\,\'\d]*)x\d(?:[\.\,\'\d]*)\b/]
+    
+    money! [
+        PR_LITERAL
+    ;      value_money
+        (re ["[-+]?[A-Z]{0,3}\$" number-re])
+        ;  [PR['PR_LITERAL'], /^\$\d[\d\.\,\']*\b/]
+        ;  [PR['PR_LITERAL'], /^[\+\-\w]{1,4}\$\d[\d\.\,\']*\b/]
+    ]
+    
+    ;      value_number
+    number! [
+        PR_LITERAL
+        (re/i ["[-+]?" number-re "%?"])
+        ;  percent! [PR_LITERAL (re "(\+|\-|\d)(?:[\.\,\'\d]*)\%\b")]
+        ;  decimal! [PR_LITERAL (re "(\+|\-|\d)\d*(?:[\.\,]\d+)\b")]
+        ;  integer! [PR_LITERAL (re "(\+|\-|\d)\d*\b")]
+    ]
+    
+    ;  words
+    datatype! [
+        PR_LITERAL
+    ;      word_datatype
+        (re "(?:[A-Za-z\-]+)\!(?![A-Za-z0-9\-])")
+    ]
+    
+    set-word! [
+        PR_LITERAL
+    ;      word_set
+        (re [word-re "(?:\/" word-re "|\/\d+)*:"])
+    ]
+    
+    ;  -- get-word!
+    get-word! [
+        PR_LITERAL
+    ;      word_get
+        (re [":" word-re])
+    ]
+    
+    ;  -- lit-word!
+    lit-word! [
+        PR_LITERAL
+    ;      word_lit
+        (re ["'" word-re])
+    ]
+    
+    refinement! [
+        PR_LITERAL
+    ;      word_refine
+        (re reduce ["\/" replace copy find next word-re "[" "]*" "]+" "(?![A-Za-z0-9\-])"])
+    ]
+
+    op! [
+        PR_LITERAL
+    ;      word_native
+        (re "(?:!=?=?|\*\*?|[+-]|\/\/?|<[=>]?|=[=?]?|>=?)(?![A-Za-z0-9\-])")
+    ]
+    
+    function! [
+        PR_LITERAL
+        (re make-keywords-string)
+        ; [REB['function!'], /\b(?:to\-relative\-file\/as\-local|or\~|pwd|abs|map|not|rm|at|do|dp|ds|dt|cd|in|ls|to|or|if)\s/]
+    ]
+    
+    rebol! [
+        PR_LITERAL
+    ;      word_header
+        (re/i "(?:rebol|red(?:\/system)?|world|topaz)$")
+    ]
+    
+    logic! [
+        PR_LITERAL
+    ;      word_logic
+        (re "(?:true|false|yes|no|on|off)$")
+    ]
+    
+    ;      word_none
+    none! [PR_LITERAL (re "none$")]
+    
+    ;      word
+    word! [PR_LITERAL (re word-re)]
+
+    ;  -- literal!
+    ; literal! [PR_LITERAL (re ["#" block-re])]
+]
diff --git a/samples/Rebol/booters.r b/samples/Rebol/booters.r
new file mode 100644
index 00000000..61ecf54a
--- /dev/null
+++ b/samples/Rebol/booters.r
@@ -0,0 +1,31 @@
+REBOL [
+	System: "REBOL [R3] Language Interpreter and Run-time Environment"
+	Title: "Special boot native function specs"
+	Rights: {
+		Copyright 2012 REBOL Technologies
+		REBOL is a trademark of REBOL Technologies
+	}
+	License: {
+		Licensed under the Apache License, Version 2.0.
+		See: http://www.apache.org/licenses/LICENSE-2.0
+	}
+	Purpose: {
+		These are used to define natives and actions.
+		Bind attributes for this block are: BIND_SET and SHALLOW
+	}
+]
+
+; Special block used as spec to the datatype test functions (e.g. time?):
+["Returns TRUE if it is this type." value [any-type!] 0]
+
+; The native function must be defined first. This is a
+; special boot function created manually within the C code.
+native: native [
+	{Creates native function (for internal usage only).}
+	spec ; [block!] -- no check required, we know it is correct
+]
+
+action: native [
+	{Creates datatype action (for internal usage only).}
+	spec ; [block!] -- no check required, we know it is correct
+]
diff --git a/samples/Rebol/hello-rebol.r b/samples/Rebol/hello-world.r2
similarity index 96%
rename from samples/Rebol/hello-rebol.r
rename to samples/Rebol/hello-world.r2
index 4c1b7983..93ff53bb 100644
--- a/samples/Rebol/hello-rebol.r
+++ b/samples/Rebol/hello-world.r2
@@ -1,5 +1,7 @@
 REBOL []
+
 hello: func [] [
     print "hello, world!"
 ]
+
 hello
diff --git a/samples/Rebol/hello-world.r3 b/samples/Rebol/hello-world.r3
new file mode 100644
index 00000000..15e5fd1a
--- /dev/null
+++ b/samples/Rebol/hello-world.r3
@@ -0,0 +1,7 @@
+Rebol []
+
+hello: func [] [
+    print "hello, world!"
+]
+
+hello
diff --git a/samples/Rebol/hello-world.reb b/samples/Rebol/hello-world.reb
new file mode 100644
index 00000000..93161ca7
--- /dev/null
+++ b/samples/Rebol/hello-world.reb
@@ -0,0 +1,5 @@
+Rebol []
+hello: func [] [
+    print "hello, world!"
+]
+hello
diff --git a/samples/Rebol/hello-world.rebol b/samples/Rebol/hello-world.rebol
new file mode 100644
index 00000000..2358cfbf
--- /dev/null
+++ b/samples/Rebol/hello-world.rebol
@@ -0,0 +1,9 @@
+Rebol [
+  author: "Rebol user"
+]
+
+hello: func [] [
+  print "hello, world!"
+]
+
+hello
diff --git a/samples/Red/example.red b/samples/Red/example.red
new file mode 100644
index 00000000..66a5ada3
--- /dev/null
+++ b/samples/Red/example.red
@@ -0,0 +1,257 @@
+Red [
+    Title:  "Red console"
+    Author: ["Nenad Rakocevic" "Kaj de Vos"]
+    File:   %console.red
+    Tabs:   4
+    Rights: "Copyright (C) 2012-2013 Nenad Rakocevic. All rights reserved."
+    License: {
+        Distributed under the Boost Software License, Version 1.0.
+        See https://github.com/dockimbel/Red/blob/master/BSL-License.txt
+    }
+    Purpose:    "Just some code for testing Pygments colorizer"
+    Language:   http://www.red-lang.org/
+]
+
+#system-global [
+    #either OS = 'Windows [
+        #import [
+            "kernel32.dll" stdcall [
+                AttachConsole:   "AttachConsole" [
+                    processID       [integer!]
+                    return:         [integer!]
+                ]
+                SetConsoleTitle: "SetConsoleTitleA" [
+                    title           [c-string!]
+                    return:         [integer!]
+                ]
+                ReadConsole:     "ReadConsoleA" [
+                    consoleInput    [integer!]
+                    buffer          [byte-ptr!]
+                    charsToRead     [integer!]
+                    numberOfChars   [int-ptr!]
+                    inputControl    [int-ptr!]
+                    return:         [integer!]
+                ]
+            ]
+        ]
+        line-buffer-size: 16 * 1024
+        line-buffer: allocate line-buffer-size
+    ][
+        #switch OS [
+            MacOSX [
+                #define ReadLine-library "libreadline.dylib"
+            ]
+            #default [
+                #define ReadLine-library "libreadline.so.6"
+                #define History-library  "libhistory.so.6"
+            ]
+        ]
+        #import [
+            ReadLine-library cdecl [
+                read-line: "readline" [  ; Read a line from the console.
+                    prompt          [c-string!]
+                    return:         [c-string!]
+                ]
+                rl-bind-key: "rl_bind_key" [
+                    key             [integer!]
+                    command         [integer!]
+                    return:         [integer!]
+                ]
+                rl-insert:   "rl_insert" [
+                    count           [integer!]
+                    key             [integer!]
+                    return:         [integer!]
+                ]
+            ]
+            #if OS <> 'MacOSX [
+                History-library cdecl [
+                    add-history: "add_history" [  ; Add line to the history.
+                        line        [c-string!]
+                    ]
+                ]
+            ]
+        ]
+
+        rl-insert-wrapper: func [
+            [cdecl]
+            count   [integer!]
+            key     [integer!]
+            return: [integer!]
+        ][
+            rl-insert count key
+        ]
+        
+    ]
+]
+
+Windows?: system/platform = 'Windows
+
+read-argument: routine [
+    /local
+        args [str-array!]
+        str  [red-string!]
+][
+    if system/args-count <> 2 [
+        SET_RETURN(none-value)
+        exit
+    ]
+    args: system/args-list + 1                          ;-- skip binary filename
+    str: simple-io/read-txt args/item
+    SET_RETURN(str)
+]
+
+init-console: routine [
+    str [string!]
+    /local
+        ret
+][
+    #either OS = 'Windows [
+        ;ret: AttachConsole -1
+        ;if zero? ret [print-line "ReadConsole failed!" halt]
+        
+        ret: SetConsoleTitle as c-string! string/rs-head str
+        if zero? ret [print-line "SetConsoleTitle failed!" halt]
+    ][
+        rl-bind-key as-integer tab as-integer :rl-insert-wrapper
+    ]
+]
+
+input: routine [
+    prompt [string!]
+    /local
+        len ret str buffer line
+][
+    #either OS = 'Windows [
+        len: 0
+        print as c-string! string/rs-head prompt
+        ret: ReadConsole stdin line-buffer line-buffer-size :len null
+        if zero? ret [print-line "ReadConsole failed!" halt]
+        len: len + 1
+        line-buffer/len: null-byte
+        str: string/load as c-string! line-buffer len
+    ][
+        line: read-line as c-string! string/rs-head prompt
+        if line = null [halt]  ; EOF
+
+         #if OS <> 'MacOSX [add-history line]
+
+        str: string/load line  1 + length? line
+;       free as byte-ptr! line
+    ]
+    SET_RETURN(str)
+]
+
+count-delimiters: function [
+    buffer  [string!]
+    return: [block!]
+][
+    list: copy [0 0]
+    c: none
+    
+    foreach c buffer [
+        case [
+            escaped? [
+                escaped?: no
+            ]
+            in-comment? [
+                switch c [
+                    #"^/" [in-comment?: no]
+                ]
+            ]
+            'else [
+                switch c [
+                    #"^^" [escaped?: yes]
+                    #";"  [if zero? list/2 [in-comment?: yes]]
+                    #"["  [list/1: list/1 + 1]
+                    #"]"  [list/1: list/1 - 1]
+                    #"{"  [list/2: list/2 + 1]
+                    #"}"  [list/2: list/2 - 1]
+                ]
+            ]
+        ]
+    ]
+    list
+]
+
+do-console: function [][
+    buffer: make string! 10000
+    prompt: red-prompt: "red>> "
+    mode:  'mono
+    
+    switch-mode: [
+        mode: case [
+            cnt/1 > 0 ['block]
+            cnt/2 > 0 ['string]
+            'else     [
+                prompt: red-prompt
+                do eval
+                'mono
+            ]
+        ]
+        prompt: switch mode [
+            block  ["[^-"]
+            string ["{^-"]
+            mono   [red-prompt]
+        ]
+    ]
+    
+    eval: [
+        code: load/all buffer
+        
+        unless tail? code [
+            set/any 'result do code
+            
+            unless unset? :result [
+                if 67 = length? result: mold/part :result 67 [  ;-- optimized for width = 72
+                    clear back tail result
+                    append result "..."
+                ]
+                print ["==" result]
+            ]
+        ]
+        clear buffer
+    ]
+
+    while [true][
+        unless tail? line: input prompt [
+            append buffer line
+            cnt: count-delimiters buffer
+
+            either Windows? [
+                remove skip tail buffer -2          ;-- clear extra CR (Windows)
+            ][
+                append buffer lf                    ;-- Unix
+            ]
+            
+            switch mode [
+                block  [if cnt/1 <= 0 [do switch-mode]]
+                string [if cnt/2 <= 0 [do switch-mode]]
+                mono   [do either any [cnt/1 > 0 cnt/2 > 0][switch-mode][eval]]
+            ]
+        ]
+    ]
+]
+
+q: :quit
+
+if script: read-argument [
+    script: load script
+    either any [
+        script/1 <> 'Red
+        not block? script/2 
+    ][
+        print "*** Error: not a Red program!"
+    ][
+        do skip script 2
+    ]
+    quit
+]
+
+init-console "Red Console"
+
+print {
+-=== Red Console alpha version ===-
+(only ASCII input supported)
+}
+
+do-console
\ No newline at end of file
diff --git a/samples/Red/example.reds b/samples/Red/example.reds
new file mode 100644
index 00000000..dd4ad0f9
--- /dev/null
+++ b/samples/Red/example.reds
@@ -0,0 +1,124 @@
+Red/System [
+    Title:      "Red/System example file"
+    Purpose:    "Just some code for testing Pygments colorizer"
+    Language:   http://www.red-lang.org/
+]
+
+#include %../common/FPU-configuration.reds
+
+; C types
+
+#define time!                   long!
+#define clock!                  long!
+
+date!: alias struct! [
+    second                      [integer!]  ; 0-61 (60?)
+    minute                      [integer!]  ; 0-59
+    hour                        [integer!]  ; 0-23
+
+    day                         [integer!]  ; 1-31
+    month                       [integer!]  ; 0-11
+    year                        [integer!]  ; Since 1900
+
+    weekday                     [integer!]  ; 0-6 since Sunday
+    yearday                     [integer!]  ; 0-365
+    daylight-saving-time?       [integer!]  ; Negative: unknown
+]
+
+#either OS = 'Windows [
+    #define clocks-per-second   1000
+][
+    ; CLOCKS_PER_SEC value for Syllable, Linux (XSI-conformant systems)
+    ; TODO: check for other systems
+    #define clocks-per-second   1000'000
+] 
+
+#import [LIBC-file cdecl [
+
+    ; Error handling
+
+    form-error: "strerror" [  ; Return error description.
+        code            [integer!]
+        return:         [c-string!]
+    ]
+    print-error: "perror" [  ; Print error to standard error output.
+        string          [c-string!]
+    ]
+
+
+    ; Memory management
+
+    make: "calloc" [  ; Allocate zero-filled memory.
+        chunks          [size!]
+        size            [size!]
+        return:         [binary!]
+    ]
+    resize: "realloc" [  ; Resize memory allocation.
+        memory          [binary!]
+        size            [size!]
+        return:         [binary!]
+    ]
+ ]
+ 
+ JVM!: alias struct! [
+    reserved0                   [int-ptr!]
+    reserved1                   [int-ptr!]
+    reserved2                   [int-ptr!]
+    
+    DestroyJavaVM               [function! [[JNICALL] vm [JVM-ptr!] return: [jint!]]]
+    AttachCurrentThread         [function! [[JNICALL] vm [JVM-ptr!] penv [struct! [p [int-ptr!]]] args [byte-ptr!] return: [jint!]]]
+    DetachCurrentThread         [function! [[JNICALL] vm [JVM-ptr!] return: [jint!]]]
+    GetEnv                      [function! [[JNICALL] vm [JVM-ptr!] penv [struct! [p [int-ptr!]]] version [integer!] return: [jint!]]]
+    AttachCurrentThreadAsDaemon [function! [[JNICALL] vm [JVM-ptr!] penv [struct! [p [int-ptr!]]] args [byte-ptr!] return: [jint!]]]
+]
+
+ ;just some datatypes for testing:
+ 
+ #some-hash
+ 10-1-2013
+ quit
+ 
+ ;binary:
+ #{00FF0000}
+ #{00FF0000 FF000000}
+ #{00FF0000	FF000000} ;with tab instead of space
+ 2#{00001111}
+ 64#{/wAAAA==}
+ 64#{/wAAA A==} ;with space	 inside
+ 64#{/wAAA	A==} ;with tab inside
+ 
+ 
+ ;string with char
+ {bla ^(ff) foo}
+ {bla ^(( foo}
+ ;some numbers:
+ 12
+ 1'000
+ 1.2
+ FF00FF00h
+ 
+ ;some tests of hexa number notation with not common ending
+ [ff00h ff00h] ff00h{} FFh"foo" 00h(1 + 2) (AEh)
+
+;normal words:
+foo char
+
+;get-word
+:foo
+ 
+;lit-word:
+'foo 'foo
+
+to-integer foo
+foo/(a + 1)/b
+
+call/output reform ['which interpreter] path: copy ""
+
+ version-1.1:   00010001h
+ 
+ #if type = 'exe [
+    push system/stack/frame                 ;-- save previous frame pointer
+    system/stack/frame: system/stack/top    ;-- @@ reposition frame pointer just after the catch flag
+]
+push CATCH_ALL                              ;-- exceptions root barrier
+push 0                                      ;-- keep stack aligned on 64-bit
\ No newline at end of file
diff --git a/samples/SAS/data.sas b/samples/SAS/data.sas
new file mode 100644
index 00000000..e4e9bb07
--- /dev/null
+++ b/samples/SAS/data.sas
@@ -0,0 +1,17 @@
+/* Example DATA step code for linguist */
+
+libname source 'C:\path\to\file'
+
+data work.working_copy;
+	set source.original_file.sas7bdat;
+run;
+
+data work.working_copy;
+	set work.working_copy;
+	if Purge = 1 then delete;
+run;
+
+data work.working_copy;
+	set work.working_copy;
+	if ImportantVariable = . then MissingFlag = 1;
+run;
\ No newline at end of file
diff --git a/samples/SAS/proc.sas b/samples/SAS/proc.sas
new file mode 100644
index 00000000..80cc1676
--- /dev/null
+++ b/samples/SAS/proc.sas
@@ -0,0 +1,15 @@
+/* PROC examples for Linguist */
+
+proc surveyselect data=work.data out=work.boot method=urs reps=20000 seed=2156 sampsize=28 outhits;
+	samplingunit Site;	
+run;
+
+PROC MI data=work.boot out=work.bootmi nimpute=30 seed=5686 round = 1;
+	By Replicate;
+	VAR Variable1 Variable2;
+run;
+
+proc logistic data=work.bootmi descending;
+	By Replicate _Imputation_;
+	model Outcome = Variable1 Variable2 / risklimits;
+run;
\ No newline at end of file
diff --git a/samples/SQL/AvailableInSearchSel.prc b/samples/SQL/AvailableInSearchSel.prc
new file mode 100644
index 00000000..b37a89c5
--- /dev/null
+++ b/samples/SQL/AvailableInSearchSel.prc
@@ -0,0 +1,19 @@
+IF EXISTS (SELECT * FROM DBO.SYSOBJECTS WHERE ID = OBJECT_ID(N'dbo.AvailableInSearchSel') AND OBJECTPROPERTY(id, N'IsProcedure') = 1)
+    DROP PROCEDURE dbo.AvailableInSearchSel
+GO
+CREATE Procedure AvailableInSearchSel
+AS
+
+    SELECT    '-1',
+            'Select...'
+    UNION ALL
+    SELECT    '1',
+            'Yes'
+    UNION ALL
+    SELECT    '0',
+            'No'
+GO
+IF DB_NAME() = 'Diebold' BEGIN
+    GRANT EXECUTE ON dbo.AvailableInSearchSel TO [rv]
+END
+GO
diff --git a/samples/SQL/db.sql b/samples/SQL/db.sql
new file mode 100644
index 00000000..860dcb0f
--- /dev/null
+++ b/samples/SQL/db.sql
@@ -0,0 +1,225 @@
+SHOW WARNINGS;
+--
+-- Table structure for table `articles`
+--
+CREATE TABLE IF NOT EXISTS `articles` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `title` varchar(255) DEFAULT NULL,
+  `content` longtext,
+  `date_posted` datetime NOT NULL,
+  `created_by` varchar(255) NOT NULL,
+  `last_modified` datetime DEFAULT NULL,
+  `last_modified_by` varchar(255) DEFAULT NULL,
+  `ordering` int(10) DEFAULT '0',
+  `is_published` int(1) DEFAULT '1',
+  PRIMARY KEY (`id`)
+);
+
+--
+-- Dumping data for table `articles`
+--
+
+INSERT INTO `articles` (`title`, `content`, `date_posted`, `created_by`, `last_modified`, `last_modified_by`, `ordering`, `is_published`) VALUES
+('Welcome', '<p>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Sed interdum, felis ac pellentesque feugiat, massa enim sagittis elit, sed dignissim sem ligula non nisl. Sed pulvinar nunc nec eros aliquet non tempus diam vehicula. Nunc tincidunt, leo ut interdum tristique, quam ligula porttitor tellus, at tincidunt magna enim nec arcu. Nunc tempor egestas libero. Vivamus nulla ligula, vehicula vitae mattis quis, laoreet eget urna. Proin eget est quis urna venenatis dictum nec vel lectus. Nullam sit amet vehicula leo. Sed commodo, orci vitae facilisis accumsan, arcu justo sagittis risus, quis aliquet purus neque eu odio. Mauris lectus orci, tincidunt in varius quis, dictum sed nibh. Quisque dapibus mollis blandit. Donec vel tellus nisl, sed scelerisque felis. Praesent ut eros tortor, sed molestie nunc. Duis eu massa at justo iaculis gravida.</p>\r\n<p>In adipiscing dictum risus a tincidunt. Sed nisi ipsum, rutrum sed ornare in, bibendum at augue. Integer ornare semper varius. Integer luctus vehicula elementum. Donec cursus elit quis erat laoreet elementum. Praesent eget justo purus, vitae accumsan massa. Ut tristique, mauris non dignissim luctus, velit justo sollicitudin odio, vel rutrum purus enim eu felis. In adipiscing elementum sagittis. Nam sed dui ante. Nunc laoreet hendrerit nisl vitae porta. Praesent sit amet ligula et nisi vulputate volutpat. Maecenas venenatis iaculis sapien sit amet auctor. Curabitur euismod venenatis velit non tempor. Cras vel sapien purus, mollis fermentum nulla. Mauris sed elementum enim. Donec ultrices urna at justo adipiscing rutrum.</p>', '2012-08-09 01:19:59', 'admin',NULL, NULL, 0, 1);
+
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `challenges`
+--
+
+CREATE TABLE IF NOT EXISTS `challenges` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `title` varchar(255) DEFAULT NULL,
+  `pkg_name` varchar(255) NOT NULL,
+  `description` text,
+  `author` varchar(255) NOT NULL,
+  `category` varchar(255) NOT NULL,
+  `date_posted` datetime NOT NULL,
+  `visibility` varchar(255) DEFAULT 'private',
+  `publish` int(10) DEFAULT '0',
+  `abstract` varchar(255) DEFAULT NULL,
+  `level` varchar(255) DEFAULT NULL,
+  `duration` int(11) DEFAULT NULL,
+  `goal` varchar(255) DEFAULT NULL,
+  `solution` varchar(255) DEFAULT NULL,
+  `availability` varchar(255) DEFAULT 'private',
+  `default_points` int(11) DEFAULT NULL,
+  `default_duration` int(11) DEFAULT NULL,
+  PRIMARY KEY (`id`)
+);
+
+--
+-- Dumping data for table `challenges`
+--
+
+INSERT INTO `challenges` (`title`, `pkg_name`, `description`, `author`, `category`, `date_posted`, `visibility`, `publish`, `abstract`, `level`, `duration`, `goal`, `solution`, `availability`, `default_points`, `default_duration`) VALUES
+('Challenge 1', 'ch001', 'Our agents (hackers) informed us that there reasonable suspicion \r\nthat the site of this <a href="ch001/" target="_blank">Logistics Company</a> is a blind \r\nfor a human organs''  smuggling organisation.<br /> <br /> This organisation attracts its \r\nvictims through advertisments for jobs with very high salaries. They choose those ones who \r\ndo not have many relatives, they assasinate them and then sell their organs to very rich \r\nclients, at very high prices.<br /> <br /> These employees are registered in the secret \r\nfiles of the company as "special clients"!<br /> <br /> One of our agents has been hired \r\nas by the particular company. Unfortunately, since 01/01/2007 he has gone missing.<br /> \r\n<br /> We know that our agent is alive, but we cannot contact him. Last time he  \r\ncommunicated with us, he mentioned that we could contact him at the  e-mail address the \r\ncompany has supplied him with, should there a problem  arise.<br /> <br /> The problem is \r\nthat when we last talked to him, he had not a company  e-mail address yet, but he told us \r\nthat his e-mail can be found through  the company''s site. <br /> <br /> The only thing we \r\nremember is that he was hired on Friday the 13th! <br /> <br /> You have to find his e-mail \r\naddress and send it to us by using the central communication panel of the company''s \r\nsite.<br /> <br /> Good luck!!!', 'Andreas Venieris,\n        Konstantinos Papapanagiotou,\n \n       Anastasios Stasinopoulos,\n        Vasilios Vlachos,\n        Alexandros \nPapanikolaou', 'web', '2012-08-09 00:23:14', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Challenge 2', 'ch002', 'Your Country needs your help for finding the password of an enemy \r\n\r\nsite  that contains useful information, which if is not acquired on time,  peace in our \r\n\r\narea will be at stake.<br /> <br />\n        You must therefore succeed in finding the \r\n\r\npassword of this military <a href="ch002/index.php" target="_blank">SITE</a>.<br /> <br \r\n\r\n/> Good luck!', 'Andreas Venieris,\n        Konstantinos Papapanagiotou,\n        Anastasios \r\n\r\nStasinopoulos,\n        Vasilios Vlachos,\n        Alexandros Papanikolaou', 'web', '0000-00-00 00:00:00', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Challenge 3', 'ch003', 'XSS permits a malevolent user to inject his own code in vulnerable \r\n\r\nweb  pages. According to the OWASP 2010 Top 10 Application Security Risks,  XSS attacks \r\n\r\nrank 2nd in the "most dangerous" list.<br /> <br /> Your objective is to make an alert \r\n\r\nbox appear  <a href="ch003/index.php" target="_blank">HERE</a> bearing the message: \r\n\r\n"<strong>XSS!</strong>".', 'Andreas Venieris,\n        Konstantinos Papapanagiotou,\n      \r\n\r\n  Anastasios Stasinopoulos,\n        Vasilios Vlachos,\n        Alexandros \r\n\r\nPapanikolaou', 'web', '2012-08-09 00:24:46', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Challenge 4', 'ch004', 'A hacker informed us that <a href="ch004/index.php" target=\r\n\r\n"_blank">this</a> site suffers from an XSS-like type of  vulnerability. Unfortunately, he \r\n\r\nlost the notes he had written regarding  how exactly did he exploit the aforementioned \r\n\r\nvulnerability.<br /> Your objective is to make an alert box appear, bearing the message \r\n\r\n"<strong>XSS!</strong>". It should be noted, however, that this site has some protection \r\n\r\nagainst such attacks.', 'Andreas Venieris,\n        Konstantinos Papapanagiotou,\n        \r\n\r\nAnastasios Stasinopoulos,\n        Vasilios Vlachos,\n        Alexandros \r\n\r\nPapanikolaou', 'web', '2012-08-09 00:25:25', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Challenge 5', 'ch005', 'You need to get access to the contents of this <a href=\r\n\r\n"ch005/index.php" target="_blank">SITE</a>. In order to achieve  this, however, you \r\n\r\nmust buy the "p0wnBrowser" web browser. Since it is  too expensive, you will have to \r\n\r\n"fool" the system in some way, so that  it let you read the site''s contents.', 'Andreas \r\n\r\nVenieris,\n        Konstantinos Papapanagiotou,\n        Anastasios Stasinopoulos,\n        \r\n\r\nVasilios Vlachos,\n        Alexandros Papanikolaou', 'web', '2012-08-09 00:26:09', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Challenge 6', 'ch006', 'In this assignment you must prove your... knightly skills! Real \r\n\r\nknights  have not disappeared.They still exist, keeping their secrets well  hidden.<br /> \r\n\r\nYour mission is to infiltrate their <a href="ch006/index.php" target="_blank">SITE</a>. \r\n\r\nThere is a small problem, however... We don''t know the password!<br /> Perhaps you could \r\n\r\nfind it?<br /> Let''s see!<br /> g00d luck dudes!', 'Andreas Venieris,\n        Konstantinos \r\n\r\nPapapanagiotou,\n        Anastasios Stasinopoulos,\n        Vasilios Vlachos,\n        \r\n\r\nAlexandros Papanikolaou', 'web', '2012-08-09 00:26:52', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Challenge 7', 'ch007', 'A good friend of mine studies at Acme University, in the <a href=\r\n\r\n"ch007/index.php" target="_blank">Computer  Science and Telecomms Department</a>. \r\n\r\nUnfortunately, her grades are not that  good. You are now thinking "This is big news!"... \r\n\r\nHmmm, maybe not. What  is big news, however, is this: The network administrator asked for  \r\n\r\n3,000 euros to change her marks into A''s. This is obviously a case of  administrative \r\n\r\nauthority abuse. Hence... a good chance for D-phase and  public exposure...<br /> I need to \r\n\r\nget into the site as admin and upload an index.htm  file in the web-root directory, that \r\n\r\nwill present all required evidence  for the University''s latest "re-marking" practices!\r\n\r\n<br /> I only need you to find the admin password for me...<br /> <br /> Good \r\n\r\nLuck!', 'Andreas Venieris,\n        Konstantinos Papapanagiotou,\n        Anastasios \r\n\r\nStasinopoulos,\n        Vasilios Vlachos,\n        Alexandros Papanikolaou', 'web', '0000-00-00 00:00:00', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Challenge 8', 'ch008', 'You have managed, after several tries, to install a backdoor shell \r\n\r\n(Locus7Shell) to <a href="ch008/" target="_blank">trytohack.gr<br /></a> <br /> The \r\n\r\nproblem is that, in order to execute the majority of the commands  (on the machine running \r\n\r\nthe backdoor) you must have super-user rights  (root).<br /> <br /> Your aim is to obtain \r\n\r\nroot rights.', 'Andreas Venieris,\n        Konstantinos Papapanagiotou,\n        Anastasios \r\n\r\nStasinopoulos,\n        Vasilios Vlachos,\n        Alexandros Papanikolaou', 'web', '0000-00-00 00:00:00', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Challenge 9', 'ch009', 'A friend of yours has set up a news blog at <a href=\r\n\r\n"ch009/index.php" target="_blank">slagoff.com</a>.  However, he is kind of worried \r\n\r\nregarding the security of the news that  gets posted on the blog and has asked you to check \r\n\r\nhow secure it is.<br /> <br /> Your objective is to determine whether any vulnerabilities \r\n\r\nexist that, if exploited, can grant access to the blog''s server.<br /> <br /> Hint: A \r\n\r\nspecially-tailored backdoor shell can be found at "<a href=\r\n\r\n"http://www.really_nasty_hacker.com/shell.txt" target="_blank\r\n\r\n">http://www.really_nasty_hacker.com/shell.txt</a>".', 'Andreas Venieris,\n        \r\n\r\nKonstantinos Papapanagiotou,\n        Anastasios Stasinopoulos,\n        Vasilios Vlachos,\r\n\r\n\n        Alexandros Papanikolaou', 'web', '2012-08-09 00:31:31', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Challenge 10', 'ch010', 'Would you like to become an active hacker ?<br /> How about \r\n\r\nbecoming a member of the world''s largest hacker group:<br /> The n1nJ4.n4x0rZ.CreW!<br /> \r\n\r\n<br /> Before you can join though, you ''ll have to prove yourself worthy by passing the \r\n\r\ntest that can be found at: <a href="ch010/" target="_blank\r\n\r\n">http://n1nj4h4x0rzcr3w.com</a><br /> <br /> If you succeed in completing the challenge, \r\n\r\nyou will get a serial  number, which you will use for obtaining the password that will \r\n\r\nenable  you to join the group.<br /> <br /> Your objective is to bypass the authentication \r\n\r\nmechanism, find the  serial number and be supplied with your own username and password from \r\n\r\n the admin team of the site.', 'Andreas Venieris,\n        Konstantinos Papapanagiotou,\n    \r\n\r\n    Anastasios Stasinopoulos,\n        Vasilios Vlachos,\n        Alexandros \r\n\r\nPapanikolaou', 'web', '2012-08-09 00:32:07', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Example Template For Challenge xml Files creation', 'example', '<p>Insert some text describing the scenario of the challenge(what the users are supposed to do and if there is any fictional story)</p>', 'Name or email or both', 'In what category does your challenge belong?(web? crypto? networks?)', '2012-10-16 22:35:01', 'private', 0, NULL, '1', 60, NULL, NULL, 'private', 1, 0),
+('cookiEng', 'cookiEng', '<p>Hello, we have heard that you are one of the best hackers in our country. We need your services.<br>You must visit an underground site and find<br> the right password. With this password we will cancel 100k+ illegal gun and drug deals!\n The good news are that we have the  directory where the password is stored. Its here \\\"/t0psec.php\\\".\n The bad news are that we have no access there. Only the administrator does. Go and find the password for us!<br><br><br>Good luck!</p>', 'Nikos Danopoulos', 'web', '2012-08-09 00:32:07', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 1, 60),
+('Izon Challenge', 'izon', '<p>After the mysterious disappearance of your best friend, you are contacted by an unknown individual who claims to have information about your friend. This individual identifies himself as \"Mister Jax\" and claims that is a former colleague of your friend.</p><p>Your friend was working at Izon Corporation, a weapons manufactured and government contractor as a systems engineer. Mister Jax didn\'t tell you his role in Izon, but wants you to pass through a series of tests to infiltrate Izon\'s web security to find the truth about your friend</p><p>After much consideration you agree with Mister Jax and he, remotely, sets up your computer to look like as if it is a part of Izon\'s Virtual Private Network in order to access their site. He also said that he\'ll guide you while you work your way to uncover the truth about your lost friend</p><p>Here is a copy of Mister Jax\'s last email:</p><p><pre>The task is simple: You get in, get your information and get out.\r\nYour friend was either a dumb programmer or a brilliant one, he left\r\nmany holes to be exploited in order to gain higher access to the site.\r\nI\'ll be guiding you with tips while you try to hack through Izon\'s site.\r\nThere are four tasks, some related to each other, some not.\r\nYou need to use your skills to overcome the obstacles, knowledge will come along.\r\nSixty minutes will suffice. When they\'re over, I won\'t be able to offer any\r\ncover to you, and you\'ll be compromised, with unknown consequences, I\'m afraid.\r\nI\'ll be seeing you there.\r\n\r\   - Jax</pre></p>	<p>Once you get in, you\'ll have sixty minutes to complete this challenge. Use common sense, remember that the most obvious place hides the most important stuff and try to behave as if you were hacking a real system.</p><p>Good Luck!</p>', 'Vasileios Mplanas', 'web', '2014-03-27 00:00:00', 'public', 1, NULL, '1', 60, NULL, NULL, 'public', 10, 60);
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `challenge_attempts`
+--
+
+CREATE TABLE IF NOT EXISTS `challenge_attempts` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `user_id` int(11) NOT NULL,
+  `challenge_id` int(11) NOT NULL,
+  `time` datetime NOT NULL,
+  `status` varchar(255) NOT NULL,
+  PRIMARY KEY (`id`)
+);
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `challenge_attempt_count`
+--
+
+CREATE TABLE IF NOT EXISTS `challenge_attempt_count` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `user_id` int(11) NOT NULL,
+  `challenge_id` int(11) NOT NULL,
+  `tries` int(11) DEFAULT NULL,
+  PRIMARY KEY (`id`),
+  UNIQUE KEY `user_id` (`user_id`),
+  UNIQUE KEY `challenge_id` (`challenge_id`)
+);
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `classes`
+--
+
+CREATE TABLE IF NOT EXISTS `classes` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `name` varchar(255) NOT NULL,
+  `date_created` datetime NOT NULL,
+  `archive` int(1) DEFAULT '0',
+  PRIMARY KEY (`id`)
+);
+
+--
+-- Dumping data for table `classes`
+--
+
+INSERT INTO `classes` (`name`, `date_created`, `archive`) VALUES
+('Sample Class', '2012-08-09 00:43:48', 0),
+('fooClass', '2012-10-16 22:32:43', 0);
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `class_challenges`
+--
+
+CREATE TABLE IF NOT EXISTS `class_challenges` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `challenge_id` int(11) NOT NULL,
+  `class_id` int(11) NOT NULL,
+  `date_created` datetime NOT NULL,
+  PRIMARY KEY (`id`)
+);
+
+--
+-- Dumping data for table `class_challenges`
+--
+
+INSERT INTO `class_challenges` (`challenge_id`, `class_id`, `date_created`) VALUES
+(1, 1, '2012-08-09 01:01:07'),
+(2, 1, '2012-08-09 01:01:07'),
+(3, 1, '2012-08-09 01:01:07'),
+(4, 1, '2012-08-09 01:01:07'),
+(5, 1, '2012-08-09 01:01:07'),
+(6, 1, '2012-08-09 01:01:07'),
+(7, 1, '2012-08-09 01:01:07'),
+(9, 1, '2012-08-09 01:01:07'),
+(10, 1, '2012-08-09 01:01:07'),
+(1, 2, '2012-10-16 22:32:49'),
+(4, 2, '2012-10-16 22:32:52'),
+(9, 2, '2012-10-16 22:32:53'),
+(10, 2, '2012-10-16 22:32:55'),
+(8, 2, '2012-10-16 22:32:58');
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `class_memberships`
+--
+
+CREATE TABLE IF NOT EXISTS `class_memberships` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `user_id` int(11) NOT NULL,
+  `class_id` int(11) NOT NULL,
+  `date_created` datetime NOT NULL,
+  PRIMARY KEY (`user_id`,`class_id`),
+  UNIQUE KEY `id` (`id`)
+);
+
+--
+-- Dumping data for table `class_memberships`
+--
+
+INSERT INTO `class_memberships` (`user_id`, `class_id`, `date_created`) VALUES
+( 1, 1, '2012-08-09 00:59:00'),
+( 2, 1, '2012-08-09 00:59:00'),
+( 3, 1, '2012-08-09 00:59:00'),
+( 4, 2, '2012-10-16 22:33:07'),
+( 5, 2, '2012-10-16 22:33:13');
+
+-- --------------------------------------------------------
+
+--
+-- Table structure for table `users`
+--
+
+CREATE TABLE IF NOT EXISTS `users` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `username` varchar(255) NOT NULL,
+  `full_name` varchar(255) NOT NULL,
+  `email` varchar(100) NOT NULL,
+  `password` varchar(255) NOT NULL,
+  `joined` datetime NOT NULL,
+  `last_visit` datetime DEFAULT NULL,
+  `is_activated` int(1) DEFAULT '0',
+  `type` int(10) DEFAULT '0',
+  `token` int(10) DEFAULT '0',
+  PRIMARY KEY (`username`),
+  UNIQUE KEY `id` (`id`)
+);
+
+--
+-- Dumping data for table `users`
+--
+
+INSERT INTO `users` (`username`, `full_name`, `email`, `password`, `joined`, `last_visit`, `is_activated`, `type`, `token`) VALUES
+('bar', 'mr. bar', 'bar@owasp.com', '$P$BJ8UtXZYqS/Lokm8zFMwcxO8dq797P.', '2012-10-16 22:12:52', '2012-10-16 22:22:39', 0, 0, 0),
+('foo', 'mr. foo', 'foo@owasp.com', '$P$BxCHeVG1RMF06UxwRbrVQtPA1yOwAq.', '2012-10-16 22:12:34', '2012-10-16 22:59:29', 0, 0, 0),
+('sensei', 'waspy sifu', 'waspy@owasp.sifu', '$P$Bj/JtLJJR3bUD0LLWXL2UW9DuRVo0I.', '2012-10-16 22:36:06', '2012-10-16 22:37:04', 1, 2, 0);
+
+--
+-- Table structure for table `user_has_challenge_token`
+--
+DROP TABLE IF EXISTS `user_has_challenge_token`;
+CREATE TABLE IF NOT EXISTS `user_has_challenge_token` (
+  `id` int(11) NOT NULL AUTO_INCREMENT,
+  `user_id` varchar(512) NOT NULL,
+  `challenge_id` varchar(512) NOT NULL,
+  `token` varchar(256) NOT NULL,
+  PRIMARY KEY (`id`)
+);
+
+SHOW WARNINGS;
diff --git a/samples/SQL/filial.tab b/samples/SQL/filial.tab
new file mode 100644
index 00000000..44140e9e
--- /dev/null
+++ b/samples/SQL/filial.tab
@@ -0,0 +1,22 @@
+create table FILIAL
+(
+  id          NUMBER not null,
+  title_ua    VARCHAR2(128) not null,
+  title_ru    VARCHAR2(128) not null,
+  title_eng   VARCHAR2(128) not null,
+  remove_date DATE,
+  modify_date DATE,
+  modify_user VARCHAR2(128)
+)
+;
+alter table FILIAL
+  add constraint PK_ID primary key (ID);
+grant select on FILIAL to ATOLL;
+grant select on FILIAL to CRAMER2GIS;
+grant select on FILIAL to DMS;
+grant select on FILIAL to HPSM2GIS;
+grant select on FILIAL to PLANMONITOR;
+grant select on FILIAL to SIEBEL;
+grant select on FILIAL to VBIS;
+grant select on FILIAL to VPORTAL;
+
diff --git a/samples/SQL/object-update.udf b/samples/SQL/object-update.udf
new file mode 100644
index 00000000..4b4a6d6e
--- /dev/null
+++ b/samples/SQL/object-update.udf
@@ -0,0 +1,8 @@
+
+if not exists(select * from sysobjects where name = '%object_name%' and type in (N'FN', N'IF', N'TF', N'FS', N'FT'))
+  exec('create FUNCTION dbo.%object_name%() returns int as begin return null end')
+GO
+
+%object_ddl%
+
+go
diff --git a/samples/SQL/suspendedtoday.viw b/samples/SQL/suspendedtoday.viw
new file mode 100644
index 00000000..f9de6e6d
--- /dev/null
+++ b/samples/SQL/suspendedtoday.viw
@@ -0,0 +1,6 @@
+use translog;
+DROP VIEW IF EXISTS `suspendedtoday`;
+
+create view suspendedtoday as
+select * from suspended 
+where datediff(datetime, now()) = 0; 
diff --git a/samples/STON/Array.ston b/samples/STON/Array.ston
new file mode 100644
index 00000000..b5d8bb58
--- /dev/null
+++ b/samples/STON/Array.ston
@@ -0,0 +1 @@
+[1, 2, 3]
diff --git a/samples/STON/Dictionary.ston b/samples/STON/Dictionary.ston
new file mode 100644
index 00000000..ae4e2731
--- /dev/null
+++ b/samples/STON/Dictionary.ston
@@ -0,0 +1 @@
+{#a : 1, #b : 2}
diff --git a/samples/STON/Rectangle.ston b/samples/STON/Rectangle.ston
new file mode 100644
index 00000000..f9c81b33
--- /dev/null
+++ b/samples/STON/Rectangle.ston
@@ -0,0 +1,4 @@
+Rectangle {
+   #origin : Point [ -40, -15 ],
+   #corner : Point [ 60, 35 ]
+ }
diff --git a/samples/STON/TestDomainObject.ston b/samples/STON/TestDomainObject.ston
new file mode 100644
index 00000000..d054f4c5
--- /dev/null
+++ b/samples/STON/TestDomainObject.ston
@@ -0,0 +1,15 @@
+TestDomainObject {
+  #created : DateAndTime [ '2012-02-14T16:40:15+01:00' ],
+  #modified : DateAndTime [ '2012-02-14T16:40:18+01:00' ],
+  #integer : 39581,
+  #float : 73.84789359463944,
+  #description : 'This is a test',
+  #color : #green,
+  #tags : [
+    #two,
+    #beta,
+    #medium
+  ],
+  #bytes : ByteArray [ 'afabfdf61d030f43eb67960c0ae9f39f' ],
+  #boolean : false
+}
diff --git a/samples/STON/ZNResponse.ston b/samples/STON/ZNResponse.ston
new file mode 100644
index 00000000..66378370
--- /dev/null
+++ b/samples/STON/ZNResponse.ston
@@ -0,0 +1,30 @@
+ZnResponse {
+   #headers : ZnHeaders {
+     #headers : ZnMultiValueDictionary {
+        'Date' : 'Fri, 04 May 2012 20:09:23 GMT',
+        'Modification-Date' : 'Thu, 10 Feb 2011 08:32:30 GMT',
+        'Content-Length' : '113',
+        'Server' : 'Zinc HTTP Components 1.0',
+        'Vary' : 'Accept-Encoding',
+        'Connection' : 'close',
+        'Content-Type' : 'text/html;charset=utf-8'
+     }
+   },
+   #entity : ZnStringEntity {
+     #contentType : ZnMimeType {
+        #main : 'text',
+        #sub : 'html',
+        #parameters : {
+            'charset' : 'utf-8'
+        }
+     },
+     #contentLength : 113,
+     #string : '<html>\n<head><title>Small</title></head>\n<body><h1>Small</h1><p>This is a small HTML document</p></body>\n</html>\n',
+     #encoder : ZnUTF8Encoder { }
+   },
+   #statusLine : ZnStatusLine {
+     #version : 'HTTP/1.1',
+     #code : 200,
+     #reason : 'OK'
+   }
+ }
diff --git a/samples/STON/methodProperties.ston b/samples/STON/methodProperties.ston
new file mode 100644
index 00000000..40a1a0fe
--- /dev/null
+++ b/samples/STON/methodProperties.ston
@@ -0,0 +1,24 @@
+{
+	"class" : {
+		 },
+	"instance" : {
+		"clientList:listElement:" : "dkh 03/20/2014 16:27",
+		"copyObjectMenuAction:selectionIndex:" : "dkh 10/13/2013 10:20",
+		"definitionForSelection:" : "dkh 10/13/2013 10:15",
+		"editMenuActionSpec" : "dkh 10/13/2013 10:19",
+		"itemSelected:listElement:selectedIndex:shiftPressed:" : "dkh 10/20/2013 11:06",
+		"menuActionSpec:" : "dkh 10/19/2013 17:12",
+		"repository:" : "dkh 10/19/2013 17:36",
+		"theList" : "dkh 10/12/2013 15:51",
+		"versionInfoBlock:" : "dkh 10/19/2013 17:08",
+		"versionInfoDiffVsSelection:selectedIndex:" : "dkh 10/19/2013 17:48",
+		"versionInfoDiffVsWorkingCopy:selectedIndex:" : "dkh 10/20/2013 12:36",
+		"versionInfoSelect:selectedIndex:" : "dkh 10/12/2013 17:04",
+		"versionInfos" : "dkh 10/19/2013 17:13",
+		"versionSummaryIsClosing" : "dkh 10/20/2013 10:19",
+		"windowIsClosing:" : "dkh 10/20/2013 10:39",
+		"windowLabel" : "dkh 05/20/2014 11:00",
+		"windowLocation" : "dkh 05/23/2014 10:17",
+		"windowName" : "dkh 10/12/2013 16:00",
+		"workingCopy" : "dkh 10/12/2013 16:16",
+		"workingCopy:" : "dkh 10/12/2013 16:17" } }
diff --git a/samples/STON/properties.ston b/samples/STON/properties.ston
new file mode 100644
index 00000000..b4aa0206
--- /dev/null
+++ b/samples/STON/properties.ston
@@ -0,0 +1,19 @@
+{
+	"category" : "Topez-Server-Core",
+	"classinstvars" : [
+		 ],
+	"classvars" : [
+		 ],
+	"commentStamp" : "",
+	"instvars" : [
+		"workingCopy",
+		"repository",
+		"versionInfos",
+		"versionInfoBlock",
+		"selectedVersionInfo",
+		"versionInfoSummaryWindowId" ],
+	"name" : "TDVersionInfoBrowser",
+	"pools" : [
+		 ],
+	"super" : "TDAbstractMonticelloToolBuilder",
+	"type" : "normal" }
diff --git a/samples/Scala/node11.sc b/samples/Scala/node11.sc
new file mode 100644
index 00000000..fadabe17
--- /dev/null
+++ b/samples/Scala/node11.sc
@@ -0,0 +1,75 @@
+import math.random
+import scala.language.postfixOps
+import scala.util._
+import scala.util.{Try, Success, Failure}
+import scala.concurrent._
+import duration._
+import ExecutionContext.Implicits.global
+import scala.concurrent.{ ExecutionContext, CanAwait, OnCompleteRunnable, TimeoutException, ExecutionException, blocking }
+/* This worksheet demonstrates some of the code snippets from
+* Week3, Lecture 4, "Composing Futures".
+*/
+
+
+object node11 {
+  println("Welcome to the Scala worksheet")       //> Welcome to the Scala worksheet
+
+  /**
+  * Retry successfully completing block at most noTimes
+  * and give up after that
+  */
+
+   def retry[T](n: Int)(block: =>Future[T]): Future[T] = {
+    val ns: Iterator[Int] = (1 to n).iterator
+    val attempts: Iterator[()=>Future[T]] = ns.map(_ => ()=>block)
+    val failed: Future[T] = Future.failed(new Exception)
+    attempts.foldLeft(failed)((a, block) => a fallbackTo { block() })
+  }                                               //> retry: [T](n: Int)(block: => scala.concurrent.Future[T])scala.concurrent.Fut
+                                                  //| ure[T]
+  def rb(i: Int) = {
+    blocking{Thread.sleep(100*random.toInt)}
+    println("Hi " ++ i.toString)
+    i + 10
+  }                                               //> rb: (i: Int)Int
+  def block(i: Int) = {
+    println("Iteration: " + i.toString)
+
+    val ri = retry(i)( Future {rb(i)} )
+
+    ri onComplete {
+      case Success(s) => println(s.toString  ++ " = 10 + " ++ i.toString)
+      case Failure(t:Exception) => println(t.toString  ++ " " ++ i.toString)
+      case r => println(r.toString  ++ " " ++ i.toString)
+    }
+
+	}                                         //> block: (i: Int)Unit
+  /* Multiple executions of a block of commands where
+   * each block contains one collectCoins and
+   * one buyTreasure. If either call fails, the whole iteration does not fail,
+   * because we are catching exceptions (with flatMap) in this implementation.
+   * Note that these blocks execute synchrounsly.
+   */
+  (0 to 4 toList).foreach(i =>block(i))           //> Iteration: 0
+                                                  //| Iteration: 1
+                                                  //| java.lang.Exception 0
+                                                  //| Hi 1
+                                                  //| Iteration: 2
+                                                  //| 11 = 10 + 1
+                                                  //| Hi 2
+                                                  //| Iteration: 3
+                                                  //| Hi 3
+                                                  //| Hi 2
+                                                  //| Iteration: 4
+                                                  //| 12 = 10 + 2
+    blocking{Thread.sleep(3000)}                  //> Hi 4
+                                                  //| Hi 3
+                                                  //| 13 = 10 + 3
+                                                  //| Hi 3
+                                                  //| 14 = 10 + 4
+                                                  //| Hi 4
+                                                  //| Hi 4
+                                                  //| Hi 4-
+
+
+
+}
diff --git a/samples/Scheme/basic.sld b/samples/Scheme/basic.sld
new file mode 100644
index 00000000..85dc75c6
--- /dev/null
+++ b/samples/Scheme/basic.sld
@@ -0,0 +1,7 @@
+(define-library (libs basic)
+    (export list2 x)
+    (begin
+        (define (list2 . objs)  objs)
+        (define x 'libs-basic)
+        (define not-exported 'should-not-be-exported)
+        ))
diff --git a/samples/ShellSession/dollar.sh-session b/samples/ShellSession/dollar.sh-session
new file mode 100644
index 00000000..ed65ddaa
--- /dev/null
+++ b/samples/ShellSession/dollar.sh-session
@@ -0,0 +1,2 @@
+$ echo $FOOBAR
+Hello World!
diff --git a/samples/ShellSession/gem-install.sh-session b/samples/ShellSession/gem-install.sh-session
new file mode 100644
index 00000000..ad788c81
--- /dev/null
+++ b/samples/ShellSession/gem-install.sh-session
@@ -0,0 +1,47 @@
+$ gem install nokogiri
+...
+Building native extensions. This could take a while...
+...
+checking for libxml/parser.h... *** extconf.rb failed ***
+Could not create Makefile due to some reason, probably lack of
+necessary libraries and/or headers. Check the mkmf.log file for more
+details. You may need configuration options.
+...
+ 
+$ brew tap homebrew/dupes
+Cloning into '/usr/local/Library/Taps/homebrew-dupes'...
+remote: Counting objects: 1034, done.
+remote: Compressing objects: 100% (591/591), done.
+remote: Total 1034 (delta 560), reused 898 (delta 443)
+Receiving objects: 100% (1034/1034), 192.53 KiB | 0 bytes/s, done.
+Resolving deltas: 100% (560/560), done.
+Checking connectivity... done
+Warning: Could not tap homebrew/dupes/lsof over mxcl/master/lsof
+Tapped 41 formula
+ 
+$ brew install apple-gcc42
+==> Downloading http://r.research.att.com/tools/gcc-42-5666.3-darwin11.pkg
+######################################################################## 100.0%
+==> Caveats
+NOTE:
+This formula provides components that were removed from XCode in the 4.2
+release. There is no reason to install this formula if you are using a
+version of XCode prior to 4.2.
+ 
+This formula contains compilers built from Apple's GCC sources, build
+5666.3, available from:
+ 
+http://opensource.apple.com/tarballs/gcc
+ 
+All compilers have a `-4.2` suffix. A GFortran compiler is also included.
+==> Summary
+🍺 /usr/local/Cellar/apple-gcc42/4.2.1-5666.3: 104 files, 75M, built in 11 seconds
+ 
+$ gem install nokogiri -v 1.5.10
+Fetching: nokogiri-1.5.10.gem (100%)
+Building native extensions. This could take a while...
+Successfully installed nokogiri-1.5.10
+1 gem installed
+Installing ri documentation for nokogiri-1.5.10...
+Installing RDoc documentation for nokogiri-1.5.10...
+
diff --git a/samples/ShellSession/simple.sh-session b/samples/ShellSession/simple.sh-session
new file mode 100644
index 00000000..af3ce462
--- /dev/null
+++ b/samples/ShellSession/simple.sh-session
@@ -0,0 +1,2 @@
+> echo $FOOBAR
+Hello World!
diff --git a/samples/Shen/graph.shen b/samples/Shen/graph.shen
new file mode 100644
index 00000000..1c42bb55
--- /dev/null
+++ b/samples/Shen/graph.shen
@@ -0,0 +1,321 @@
+\* graph.shen --- a library for graph definition and manipulation
+
+Copyright (C) 2011,  Eric Schulte
+
+*** License:
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*** Commentary:
+
+Graphs are represented as two dictionaries one for vertices and one
+for edges.  It is important to note that the dictionary implementation
+used is able to accept arbitrary data structures as keys.  This
+structure technically encodes hypergraphs (a generalization of graphs
+in which each edge may contain any number of vertices).  Examples of a
+regular graph G and a hypergraph H with the corresponding data
+structure are given below.
+
+
+--G=<graph Vertices Edges>------------------------------------------------
+                            Vertices                  Edges
+                           ----------                -------
+ +----Graph G-----+      hash | key -> value      hash |  key  -> value
+ |                |      -----+------>--------    -----+-------->---------
+ | a---b---c   g  |         1 |  a  -> [1]           1 | [a b] -> [1 2]
+ |     |   |      |         2 |  b  -> [1 2 3]       2 | [b c] -> [2 3]
+ |     d---e---f  |         3 |  c  -> [2 4]         3 | [b d] -> [2 4]
+ |                |         4 |  d  -> [3 5]         4 | [c e] -> [3 5]
+ +----------------+         5 |  e  -> [4 5 6]       5 | [d e] -> [4 5]
+                            6 |  f  -> [6]           6 | [e f] -> [5 6]
+                            7 |  g  -> []
+
+
+--H=<graph Vertices Edges>------------------------------------------------
+                            Vertices                  Edges
+                           ----------                -------
+                         hash | key -> value      hash |  key  -> value
+ +-- Hypergraph H----+   -----+------>--------    -----+-------->---------
+ |                   |      1 |  a  -> [1]           1 | [a b     [1 2
+ |        +------+   |      2 |  b  -> [1]             |  c d  ->  3 4
+ | +------+------+   |      3 |  c  -> [1]             |  e f]     5 6]
+ | |a b c |d e f |   |      4 |  d  -> [1 2]           |
+ | +------+------+   |      5 |  e  -> [1 2]         2 | [d e     [4 5
+ |        |g h i | j |      6 |  f  -> [1 2]           |  f g  ->  6 7
+ |        +------+   |      7 |  g  -> [2]             |  h i]     8 9]
+ |                   |      8 |  h  -> [2]
+ +-------------------+      9 |  i  -> [2]
+                           10 |  j  -> []
+
+
+--G=<graph Vertices Edges>-------Graph with associated edge/vertex data---------
+                            Vertices                    Edges
+                           ----------                  -------
+ +----Graph G-----+      hash | key -> value        hash |  key  -> value
+ |   4   6     7  |      -----+------>--------      -----+-------->---------
+ |0a---b---c   g  |         1 |  a  -> (@p 0 [1])      1 | [a b] -> (@p 4 [1 2])
+ |    1|  3|      |         2 |  b  -> [1 2 3]         2 | [b c] -> (@p 6 [2 3])
+ |     d---e---f  |         3 |  c  -> [2 4]           3 | [b d] -> (@p 1 [2 4])
+ |       2   5    |         4 |  d  -> [3 5]           4 | [c e] -> (@p 3 [3 5])
+ +----------------+         5 |  e  -> [4 5 6]         5 | [d e] -> (@p 2 [4 5])
+                            6 |  f  -> [6]             6 | [e f] -> (@p 5 [5 6])
+                            7 |  g  -> (@p 7 [])
+
+V = # of vertices
+E = # of edges
+M = # of vertex edge associations
+
+size = size of all vertices +            all vertices stored in Vertices dict
+       M * sizeof(int) * 4 +             indices into Vertices & Edge dicts
+       V * sizeof(dict entry) +          storage in the Vertex dict
+       E * sizeof(dict entry) +          storage in the Edge dict
+       2 * sizeof(dict)                  the Vertices and Edge dicts
+
+*** Code: *\
+(require dict)
+(require sequence)
+
+(datatype graph
+  Vertices : dictionary;
+     Edges : dictoinary;
+  ===================
+  (vector symbol Vertices Edges);)
+
+(package graph- [graph graph? vertices edges add-vertex
+                 add-edge has-edge? has-vertex? edges-for
+                 neighbors connected-to connected? connected-components
+                 vertex-partition bipartite?
+                 \* included from the sequence library\ *\
+                 take drop take-while drop-while range flatten
+                 filter complement seperate zip indexed reduce
+                 mapcon partition partition-with unique frequencies
+                 shuffle pick remove-first interpose subset?
+                 cartesian-product
+                 \* included from the dict library\ *\
+                 dict? dict dict-> <-dict contents key? keys vals
+                 dictionary make-dict]
+
+(define graph?
+  X -> (= graph (<-address X 0)))
+
+(define make-graph
+  \* create a graph with specified sizes for the vertex dict and edge dict *\
+  {number --> number --> graph}
+  Vertsize Edgesize ->
+    (let Graph (absvector 3)
+      (do (address-> Graph 0 graph)
+          (address-> Graph 1 (make-dict Vertsize))
+          (address-> Graph 2 (make-dict Edgesize))
+          Graph)))
+
+(defmacro graph-macro
+  \* return a graph taking optional sizes for the vertex and edge dicts *\
+  [graph] -> [make-graph 1024 1024]
+  [graph N] -> [make-graph N 1024]
+  [graph N M] -> [make-graph N M])
+
+(define vert-dict Graph -> (<-address Graph 1))
+
+(define edge-dict Graph -> (<-address Graph 2))
+
+(define vertices
+  {graph --> (list A)}
+  Graph -> (keys (vert-dict Graph)))
+
+(define edges
+  {graph --> (list (list A))}
+  Graph -> (keys (edge-dict Graph)))
+
+(define get-data
+  Value V -> (if (tuple? Value)
+                 (fst Value)
+                 (error (make-string "no data for ~S~%" V))))
+
+(define vertex-data
+  Graph V -> (get-data (<-dict (vert-dict Graph) V) V))
+
+(define edge-data
+  Graph V -> (get-data (<-dict (edge-dict Graph) V) V))
+
+(define resolve
+  {(vector (list A)) --> (@p number number) --> A}
+  Vector (@p Index Place) -> (nth (+ 1 Place) (<-vector Vector Index)))
+
+(define resolve-vert
+  {graph --> (@p number number) --> A}
+  Graph Place -> (resolve (<-address (vert-dict Graph) 2) Place))
+
+(define resolve-edge
+  {graph --> (@p number number) --> A}
+  Graph Place -> (resolve (<-address (edge-dict Graph) 2) Place))
+
+(define edges-for
+  {graph --> A --> (list (list A))}
+  Graph Vert -> (let Val (trap-error (<-dict (vert-dict Graph) Vert) (/. E []))
+                     Edges (if (tuple? Val) (snd Val) Val)
+                  (map (lambda X (fst (resolve-edge Graph X))) Val)))
+
+(define add-vertex-w-data
+  \* add a vertex to a graph *\
+  {graph --> A --> B --> A}
+  G V Data -> (do (dict-> (vert-dict G) V (@p Data (edges-for G V))) V))
+
+(define add-vertex-w/o-data
+  \* add a vertex to a graph *\
+  {graph --> A --> B --> A}
+  G V -> (do (dict-> (vert-dict G) V (edges-for G V)) V))
+
+(defmacro add-vertex-macro
+  [add-vertex G V]   -> [add-vertex-w/o-data G V]
+  [add-vertex G V D] -> [add-vertex-w-data G V D])
+
+(define update-vert
+  \* in a dict, add an edge to a vertex's edge list *\
+  {vector --> (@p number number) --> A --> number}
+  Vs Edge V -> (let Store (<-address Vs 2)
+                    N (hash V (limit Store))
+                    VertLst (trap-error (<-vector Store N) (/. E []))
+                    Contents (trap-error (<-dict Vs V) (/. E []))
+                 (do (dict-> Vs V (if (tuple? Contents)
+                                      (@p (fst Contents)
+                                          (adjoin Edge (snd Contents)))
+                                      (adjoin Edge Contents)))
+                     (@p N (length VertLst)))))
+
+(define update-edges-vertices
+  \* add an edge to a graph *\
+  {graph --> (list A) --> (list A)}
+  Graph Edge ->
+  (let Store (<-address (edge-dict Graph) 2)
+       EdgeID (hash Edge (limit Store))
+       EdgeLst (trap-error (<-vector Store EdgeID) (/. E []))
+    (map (update-vert (vert-dict Graph) (@p EdgeID (length EdgeLst))) Edge)))
+
+(define add-edge-w-data
+  G E D -> (do (dict-> (edge-dict G) E (@p D (update-edges-vertices G E))) E))
+
+(define add-edge-w/o-data
+  G E -> (do (dict-> (edge-dict G) E (update-edges-vertices G E)) E))
+
+(defmacro add-edge-macro
+  [add-edge G E]   -> [add-edge-w/o-data G E]
+  [add-edge G E V] -> [add-edge-w-data G E V])
+
+(define has-edge?
+  {graph --> (list A) --> boolean}
+  Graph Edge -> (key? (edge-dict Graph) Edge))
+
+(define has-vertex?
+  {graph --> A --> boolean}
+  Graph Vertex -> (key? (vert-dict Graph) Vertex))
+
+(define neighbors
+  \* Return the neighbors of a vertex *\
+  {graph --> A --> (list A)}
+  Graph Vert -> (unique (mapcon (remove-first Vert) (edges-for Graph Vert))))
+
+(define connected-to-
+  {graph --> (list A) --> (list A) --> (list A)}
+  Graph [] Already -> Already
+  Graph New Already ->
+  (let Reachable (unique (mapcon (neighbors Graph) New))
+       New (difference Reachable Already)
+    (connected-to- Graph New (append New Already))))
+
+(define connected-to
+  \* return all vertices connected to the given vertex, including itself *\
+  {graph --> A --> (list A)}
+  Graph V -> (connected-to- Graph [V] [V]))
+
+(define connected?
+  \* return if a graph is fully connected *\
+  {graph --> boolean}
+  Graph -> (reduce (/. V Acc
+                       (and Acc
+                            (subset? (vertices Graph) (connected-to Graph V))))
+                   true (vertices Graph)))
+
+(define connected-components-
+  \* given a graph return a list of connected components *\
+  {graph --> (list A) --> (list (list A)) --> (list graph)}
+  Graph [] _ -> []
+  Graph VS [] -> (map (/. V (let Component (graph 1 0)
+                              (do (add-vertex Component V) Component)))
+                      VS)
+  Graph [V|VS] ES ->
+    (let Con-verts (connected-to Graph V)
+         Con-edges (filter (/. E (subset? E Con-verts)) ES)
+         Component (graph (length Con-verts) (length Con-edges))
+      (do (map (add-edge-w/o-data Component) Con-edges)
+          (cons Component (connected-components- Graph
+                                                 (difference VS Con-verts)
+                                                 (difference ES Con-edges))))))
+
+(define connected-components
+  {graph --> (list graph)}
+  Graph -> (connected-components- Graph (vertices Graph) (edges Graph)))
+
+(define place-vertex
+  \* given a graph, vertex and list of partitions, partition the vertex *\
+  {graph --> A --> (list (list A)) --> (list (list A))}
+  Graph V [] -> (if (element? V (neighbors Graph V))
+                    (simple-error
+                     (make-string "self-loop ~S, no vertex partition" V))
+                    [[V]])
+  Graph V [C|CS] -> (let Neighbors (neighbors Graph V)
+                      (if (element? V Neighbors)
+                          (simple-error
+                           (make-string "self-loop ~S, no vertex partition" V))
+                          (if (empty? (intersection C Neighbors))
+                              [[V|C]|CS]
+                              [C|(place-vertex Graph V CS)]))))
+
+(define vertex-partition
+  \* partition the vertices of a graph *\
+  {graph --> (list (list A))}
+  Graph -> (reduce (place-vertex Graph) [] (vertices Graph)))
+
+(define bipartite?
+  \* check if a graph is bipartite *\
+  {graph --> boolean}
+  Graph -> (= 2 (length (vertex-partition Graph))))
+
+)
+
+\* simple tests
+
+(set g (graph))
+(add-edge (value g) [chris patton])
+(add-edge (value g) [eric chris])
+(add-vertex (value g) nobody)
+(has-edge? (value g) [patton chris])
+(edges-for (value g) chris)
+(neighbors (value g) chris)
+(neighbors (value g) nobody)
+(connected-to (value g) chris)
+(connected? (value g))
+(connected-components (value g)) <- fail when package wrapper is used
+(map (function vertices) (connected-components (value g)))
+
+*\
\ No newline at end of file
diff --git a/samples/Shen/html.shen b/samples/Shen/html.shen
new file mode 100644
index 00000000..62d93c30
--- /dev/null
+++ b/samples/Shen/html.shen
@@ -0,0 +1,102 @@
+\* html.shen --- html generation functions for shen
+
+Copyright (C) 2011,  Eric Schulte
+
+*** License:
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+ - Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+ - Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+*** Commentary:
+
+The standard lisp-to-html conversion tool suite.  Follows some of
+the convertions of Clojure's hiccup.
+
+  an example...
+
+(8-) (html [ul#todo1.tasks.stuff [: [title "today"]]
+          (map (lambda Str [li Str]) ["get milk" "dishes"])])
+"<ul class='tasks stuff' id='todo1' title='today'>
+ <li>get milk</li><li>dishes</li></ul>"
+
+*** Code: *\
+(trap-error
+ (require string)
+ (/. E (load "../string/string.shen")))
+
+(package string- [html
+                  \* symbols included from string *\
+                  takestr dropstr substr length-str index-str
+                  reverse-str starts-with substr? replace-str
+                  join split trim-left trim-right chomp trim]
+
+(define to-str
+  \* return argument as a string, if already a string do not change *\
+  X -> X where (string? X)
+  X -> (str X))
+
+(define gassoc
+  X Y -> (hd (tl (assoc X Y))))
+
+(define dassoc
+  X Y -> (remove (assoc X Y) Y))
+
+(define passoc
+  [] Y -> Y
+  [X XV] Y -> (let Orig (gassoc X Y)
+                   New (if (cons? Orig) [XV|Orig] XV)
+                [[X New]|(dassoc X Y)]))
+
+(define html
+  X -> X where (string? X)
+  [Tag [: |Attrs] |Body] ->
+    (let Tag-comps (css-parse-symbol Tag)
+         Tag (gassoc tag Tag-comps)
+         New-attrs (passoc (assoc class Tag-comps)
+                           (passoc (assoc id Tag-comps) Attrs))
+      (@s (make-string "<~S" Tag) (attributes New-attrs) ">"
+          (html Body)
+          (make-string "</~S>" Tag))) where (symbol? Tag)
+  [Tag|Body] -> (html [Tag [:] Body]) where (symbol? Tag)
+  [H|HS] -> (@s (html H) (html HS))
+  [] -> "")
+
+(define css-parse-symbol
+  {symbol --> [[symbol A]]}
+  Symbol -> (let String (str Symbol)
+                 Class-split (split (str .) String)
+                 Class (map (function intern) (tl Class-split))
+                 Id-split (split (str #) (hd Class-split))
+                 Tag (hd Id-split)
+                 Id (tl Id-split)
+              ((if (= [] Id) (/. X X) (cons [id (intern (hd Id))]))
+               ((if (= [] Class) (/. X X) (cons [class Class])) 
+                [[tag (intern Tag)]]))))
+
+(define attributes
+  [] -> ""
+  [[K V]|AS] -> (@s " " (to-str K) "='"
+                    (if (cons? V) (join " " (map (function str) V)) (to-str V))
+                    "'" (attributes AS)))
+
+)
\ No newline at end of file
diff --git a/samples/Shen/json.shen b/samples/Shen/json.shen
new file mode 100644
index 00000000..b330c5c6
--- /dev/null
+++ b/samples/Shen/json.shen
@@ -0,0 +1,39 @@
+(load "grammar.shen")
+
+\*
+
+JSON Lexer
+
+1. Read a stream of characters
+2. Whitespace characters not in strings should be discarded.
+3. Whitespace characters in strings should be preserved
+4. Strings can contain escaped double quotes. e.g. "\""
+
+*\
+
+(define whitespacep
+  \* e.g. ASCII 32 == #\Space. *\
+  \* All the others are whitespace characters from an ASCII table. *\
+  Char -> (member Char ["c#9;" "c#10;" "c#11;" "c#12;" "c#13;" "c#32;"]))
+
+(define replace-whitespace
+  "" -> ""
+  (@s Whitespace Suffix) -> (@s "" (replace-whitespace Suffix)) where (whitespacep Whitespace)
+  (@s Prefix Suffix) -> (@s Prefix (replace-whitespace Suffix)))
+
+(define fetch-until-unescaped-doublequote
+  [] -> []
+  ["\" "c#34;" | Chars] -> ["\" "c#34;" | (fetch-until-unescaped-doublequote Chars)]
+  ["c#34;" | Chars] -> []
+  [Char | Chars] -> [Char | (fetch-until-unescaped-doublequote Chars)])
+
+\* (define strip-whitespace-chars *\
+\*   [] -> [] *\
+\*   ["c#34;" | Chars] -> ["c#34;" | ( *\
+\*   [WhitespaceChar | Chars] -> (strip-whitespace-chars Chars) where (whitespace? WhitespaceChar) *\
+\*   [Char | Chars] -> [Char | (strip-whitespace-chars Chars)]) *\
+
+(define tokenise
+  JSONString ->
+  (let CharList (explode JSONString)
+       CharList))
\ No newline at end of file
diff --git a/samples/Slim/sample.slim b/samples/Slim/sample.slim
new file mode 100644
index 00000000..9480a9ff
--- /dev/null
+++ b/samples/Slim/sample.slim
@@ -0,0 +1,31 @@
+doctype html
+html
+  head
+    title Slim Examples
+    meta name="keywords" content="template language"
+    meta name="author" content=author
+    javascript:
+      alert('Slim supports embedded javascript!')
+
+  body
+    h1 Markup examples
+
+    #content
+      p This example shows you how a basic Slim file looks like.
+
+      == yield
+
+      - unless items.empty?
+        table
+          - for item in items do
+            tr
+              td.name = item.name
+              td.price = item.price
+      - else
+        p
+         | No items found.  Please add some inventory.
+           Thank you!
+
+    div id="footer"
+      = render 'footer'
+      | Copyright © #{year} #{author}
diff --git a/samples/Smalltalk/Dinner.st b/samples/Smalltalk/Dinner.st
new file mode 100644
index 00000000..9304cbc0
--- /dev/null
+++ b/samples/Smalltalk/Dinner.st
@@ -0,0 +1,111 @@
+"======================================================================
+|
+|   Smalltalk dining philosophers
+|
+|
+ ======================================================================"
+
+
+"======================================================================
+|
+| Copyright 1999, 2000 Free Software Foundation, Inc.
+| Written by Paolo Bonzini.
+|
+| This file is part of GNU Smalltalk.
+|
+| GNU Smalltalk is free software; you can redistribute it and/or modify it
+| under the terms of the GNU General Public License as published by the Free
+| Software Foundation; either version 2, or (at your option) any later version.
+| 
+| GNU Smalltalk is distributed in the hope that it will be useful, but WITHOUT
+| ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+| FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+| details.
+| 
+| You should have received a copy of the GNU General Public License along with
+| GNU Smalltalk; see the file COPYING.  If not, write to the Free Software
+| Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  
+|
+ ======================================================================"
+
+
+Object subclass: #Philosophers
+    instanceVariableNames: 'forks philosophers randy eating'
+    classVariableNames: ''
+    poolDictionaries: ''
+    category: 'Examples-Processes'!
+
+!Philosophers class methodsFor: 'dining'!
+
+new
+    self shouldNotImplement
+!
+
+new: quantity
+    ^super new initialize: quantity
+! !
+
+!Philosophers methodsFor: 'dining'!
+
+dine
+    self dine: 15
+!
+
+dine: seconds
+    (Delay forSeconds: seconds) wait.
+    philosophers do: [ :each | each terminate ].
+    self initialize: self size
+!
+
+leftFork: n
+    ^forks at: n
+!
+
+rightFork: n
+    ^n = self size
+	ifTrue: [ forks at: 1 ]
+	ifFalse: [ forks at: n + 1 ]
+!
+
+initialize: n
+    eating := Semaphore new.
+    n - 1 timesRepeat: [ eating signal ].
+
+    randy := Random new.
+    forks := (1 to: n) collect: [ :each | Semaphore forMutualExclusion ].
+    philosophers := (1 to: n) collect: [ :each | self philosopher: each ].
+!
+
+philosopher: n
+    | philosopherCode leftFork rightFork status |
+    leftFork  := self leftFork: n.
+    rightFork := self rightFork: n.
+    status    := 'Philosopher #', n printString, ' '.
+    philosopherCode := [[ true ] whileTrue: [
+	Transcript nextPutAll: status, 'thinks'; nl.
+	(Delay forMilliseconds: randy next * 2000) wait.
+	Transcript nextPutAll: status, 'wants to eat'; nl.
+	eating critical: [				    "Avoid deadlock"
+	    Transcript nextPutAll: status, 'waits for left fork'; nl.
+	    leftFork wait.
+	    Transcript nextPutAll: status, 'waits for right fork'; nl.
+	    rightFork wait.
+	    Transcript nextPutAll: status, 'eats'; nl.
+	    (Delay forMilliseconds: randy next * 2000) wait.
+	    leftFork signal.
+	    rightFork signal.
+	].
+    ]].
+
+    ^(philosopherCode newProcess)
+	priority: Processor userBackgroundPriority;
+	name: status;
+	resume;
+	yourself
+!
+
+size
+    ^forks size
+! !
+
+(Philosophers new: 5) dine!
diff --git a/samples/Smalltalk/TestBasic.st b/samples/Smalltalk/TestBasic.st
new file mode 100644
index 00000000..ef6244cd
--- /dev/null
+++ b/samples/Smalltalk/TestBasic.st
@@ -0,0 +1,64 @@
+Koan subclass: TestBasic [
+  <comment: 'A collection of introductory tests.'>
+
+  testDeclarationAndAssignment [
+    | declaration anotherDeclaration |
+    "You must declare variables before using them."
+    "Variables are separated by a single space."
+
+    declaration _ 1.  "Squeak Smalltalk way to assign value"
+    anotherDeclaration := 'string'.  "typical way to assign value
+      (this will be used throughout the koans)"
+
+    self expect: fillMeIn toEqual: declaration.
+    self expect: fillMeIn toEqual: anotherDeclaration.
+  ]
+
+  testEqualSignIsNotAnAssignmentOperator [
+    | variableA variableB value |
+
+    variableA := variableB := 1234.  "multiple assignments work"
+    value := variableA = variableB.  "equal is not used for assignment"
+
+    self expect: fillMeIn toEqual: (variableA = variableB).
+
+    "#== is a message that checks if identity is equal.  More about messages in the TestMessage koan."
+  ]
+
+  testMultipleStatementsInASingleLine [
+    | variableA variableB variableC |
+
+    "Multiple statements are separated by periods."
+    variableA := 1. variableB := 2. variableC := 3.
+
+    self expect: fillMeIn toEqual: variableA.
+    self expect: fillMeIn toEqual: variableB.
+    self expect: fillMeIn toEqual: variableC.
+  ]
+
+  testInequality [
+    self expect: fillMeIn toEqual: ('hello' ~= 'world').
+
+    "#~~ is a message that checks if identity is not equal.  More about messages in the TestMessage koan."
+  ]
+
+  testLogicalOr [
+    | expression |
+
+    expression := (3 > 4) | (5 < 6).
+
+    self expect: fillMeIn toEqual: expression.
+  ]
+
+  testLogicalAnd [
+    | expression |
+
+    expression := (2 > 1) & ('a' < 'b').
+
+    self expect: fillMeIn toEqual: expression.
+  ]
+
+  testNot [
+    self expect: fillMeIn toEqual: true not.
+  ]
+]
diff --git a/samples/Smalltalk/testSimpleChainMatches.st b/samples/Smalltalk/testSimpleChainMatches.st
new file mode 100644
index 00000000..85ee574b
--- /dev/null
+++ b/samples/Smalltalk/testSimpleChainMatches.st
@@ -0,0 +1,11 @@
+tests
+testSimpleChainMatches
+	|e eCtrl |
+	e := self eventKey: $e.
+	eCtrl := self eventKey: $e ctrl: true.
+	
+	self assert: (($e ctrl, $e) matches: {eCtrl}).
+	self assert: ($e ctrl matches: {eCtrl. e}).
+	
+	self deny: (($e ctrl, $e) matches: {eCtrl. self eventKey: $a}).
+	self deny: ($e ctrl matches: {e}).
\ No newline at end of file
diff --git a/samples/SourcePawn/foo.sp b/samples/SourcePawn/foo.sp
new file mode 100644
index 00000000..3d50b3ac
--- /dev/null
+++ b/samples/SourcePawn/foo.sp
@@ -0,0 +1,1192 @@
+/**
+ * vim: set ts=4 :
+ * =============================================================================
+ * SourceMod Mapchooser Plugin
+ * Creates a map vote at appropriate times, setting sm_nextmap to the winning
+ * vote
+ *
+ * SourceMod (C)2004-2007 AlliedModders LLC.  All rights reserved.
+ * =============================================================================
+ *
+ * This program is free software; you can redistribute it and/or modify it under
+ * the terms of the GNU General Public License, version 3.0, as published by the
+ * Free Software Foundation.
+ * 
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ * As a special exception, AlliedModders LLC gives you permission to link the
+ * code of this program (as well as its derivative works) to "Half-Life 2," the
+ * "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
+ * by the Valve Corporation.  You must obey the GNU General Public License in
+ * all respects for all other code used.  Additionally, AlliedModders LLC grants
+ * this exception to all derivative works.  AlliedModders LLC defines further
+ * exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
+ * or <http://www.sourcemod.net/license.php>.
+ *
+ * Version: $Id$
+ */
+ 
+//#define DEBUG
+
+#if defined DEBUG
+	#define assert(%1) if (!(%1)) ThrowError("Debug Assertion Failed");
+	#define assert_msg(%1,%2) if (!(%1)) ThrowError(%2);
+#else
+	#define assert(%1)
+	#define assert_msg(%1,%2)
+#endif
+
+#pragma semicolon 1
+#include <sourcemod>
+#include <mapchooser>
+#include <nextmap>
+
+public Plugin:myinfo =
+{
+	name = "MapChooser",
+	author = "AlliedModders LLC",
+	description = "Automated Map Voting",
+	version = SOURCEMOD_VERSION,
+	url = "http://www.sourcemod.net/"
+};
+
+/* Valve ConVars */
+new Handle:g_Cvar_Winlimit = INVALID_HANDLE;
+new Handle:g_Cvar_Maxrounds = INVALID_HANDLE;
+new Handle:g_Cvar_Fraglimit = INVALID_HANDLE;
+new Handle:g_Cvar_Bonusroundtime = INVALID_HANDLE;
+
+/* Plugin ConVars */
+new Handle:g_Cvar_StartTime = INVALID_HANDLE;
+new Handle:g_Cvar_StartRounds = INVALID_HANDLE;
+new Handle:g_Cvar_StartFrags = INVALID_HANDLE;
+new Handle:g_Cvar_ExtendTimeStep = INVALID_HANDLE;
+new Handle:g_Cvar_ExtendRoundStep = INVALID_HANDLE;
+new Handle:g_Cvar_ExtendFragStep = INVALID_HANDLE;
+new Handle:g_Cvar_ExcludeMaps = INVALID_HANDLE;
+new Handle:g_Cvar_IncludeMaps = INVALID_HANDLE;
+new Handle:g_Cvar_NoVoteMode = INVALID_HANDLE;
+new Handle:g_Cvar_Extend = INVALID_HANDLE;
+new Handle:g_Cvar_DontChange = INVALID_HANDLE;
+new Handle:g_Cvar_EndOfMapVote = INVALID_HANDLE;
+new Handle:g_Cvar_VoteDuration = INVALID_HANDLE;
+new Handle:g_Cvar_RunOff = INVALID_HANDLE;
+new Handle:g_Cvar_RunOffPercent = INVALID_HANDLE;
+
+new Handle:g_VoteTimer = INVALID_HANDLE;
+new Handle:g_RetryTimer = INVALID_HANDLE;
+
+/* Data Handles */
+new Handle:g_MapList = INVALID_HANDLE;
+new Handle:g_NominateList = INVALID_HANDLE;
+new Handle:g_NominateOwners = INVALID_HANDLE;
+new Handle:g_OldMapList = INVALID_HANDLE;
+new Handle:g_NextMapList = INVALID_HANDLE;
+new Handle:g_VoteMenu = INVALID_HANDLE;
+
+new g_Extends;
+new g_TotalRounds;
+new bool:g_HasVoteStarted;
+new bool:g_WaitingForVote;
+new bool:g_MapVoteCompleted;
+new bool:g_ChangeMapAtRoundEnd;
+new bool:g_ChangeMapInProgress;
+new g_mapFileSerial = -1;
+
+new g_NominateCount = 0;
+new MapChange:g_ChangeTime;
+
+new Handle:g_NominationsResetForward = INVALID_HANDLE;
+new Handle:g_MapVoteStartedForward = INVALID_HANDLE;
+
+/* Upper bound of how many team there could be */
+#define MAXTEAMS 10
+new g_winCount[MAXTEAMS];
+
+#define VOTE_EXTEND "##extend##"
+#define VOTE_DONTCHANGE "##dontchange##"
+
+public OnPluginStart()
+{
+	LoadTranslations("mapchooser.phrases");
+	LoadTranslations("common.phrases");
+	
+	new arraySize = ByteCountToCells(PLATFORM_MAX_PATH);
+	g_MapList = CreateArray(arraySize);
+	g_NominateList = CreateArray(arraySize);
+	g_NominateOwners = CreateArray(1);
+	g_OldMapList = CreateArray(arraySize);
+	g_NextMapList = CreateArray(arraySize);
+	
+	g_Cvar_EndOfMapVote = CreateConVar("sm_mapvote_endvote", "1", "Specifies if MapChooser should run an end of map vote", _, true, 0.0, true, 1.0);
+
+	g_Cvar_StartTime = CreateConVar("sm_mapvote_start", "3.0", "Specifies when to start the vote based on time remaining.", _, true, 1.0);
+	g_Cvar_StartRounds = CreateConVar("sm_mapvote_startround", "2.0", "Specifies when to start the vote based on rounds remaining. Use 0 on TF2 to start vote during bonus round time", _, true, 0.0);
+	g_Cvar_StartFrags = CreateConVar("sm_mapvote_startfrags", "5.0", "Specifies when to start the vote base on frags remaining.", _, true, 1.0);
+	g_Cvar_ExtendTimeStep = CreateConVar("sm_extendmap_timestep", "15", "Specifies how much many more minutes each extension makes", _, true, 5.0);
+	g_Cvar_ExtendRoundStep = CreateConVar("sm_extendmap_roundstep", "5", "Specifies how many more rounds each extension makes", _, true, 1.0);
+	g_Cvar_ExtendFragStep = CreateConVar("sm_extendmap_fragstep", "10", "Specifies how many more frags are allowed when map is extended.", _, true, 5.0);	
+	g_Cvar_ExcludeMaps = CreateConVar("sm_mapvote_exclude", "5", "Specifies how many past maps to exclude from the vote.", _, true, 0.0);
+	g_Cvar_IncludeMaps = CreateConVar("sm_mapvote_include", "5", "Specifies how many maps to include in the vote.", _, true, 2.0, true, 6.0);
+	g_Cvar_NoVoteMode = CreateConVar("sm_mapvote_novote", "1", "Specifies whether or not MapChooser should pick a map if no votes are received.", _, true, 0.0, true, 1.0);
+	g_Cvar_Extend = CreateConVar("sm_mapvote_extend", "0", "Number of extensions allowed each map.", _, true, 0.0);
+	g_Cvar_DontChange = CreateConVar("sm_mapvote_dontchange", "1", "Specifies if a 'Don't Change' option should be added to early votes", _, true, 0.0);
+	g_Cvar_VoteDuration = CreateConVar("sm_mapvote_voteduration", "20", "Specifies how long the mapvote should be available for.", _, true, 5.0);
+	g_Cvar_RunOff = CreateConVar("sm_mapvote_runoff", "0", "Hold run of votes if winning choice is less than a certain margin", _, true, 0.0, true, 1.0);
+	g_Cvar_RunOffPercent = CreateConVar("sm_mapvote_runoffpercent", "50", "If winning choice has less than this percent of votes, hold a runoff", _, true, 0.0, true, 100.0);
+	
+	RegAdminCmd("sm_mapvote", Command_Mapvote, ADMFLAG_CHANGEMAP, "sm_mapvote - Forces MapChooser to attempt to run a map vote now.");
+	RegAdminCmd("sm_setnextmap", Command_SetNextmap, ADMFLAG_CHANGEMAP, "sm_setnextmap <map>");
+
+	g_Cvar_Winlimit = FindConVar("mp_winlimit");
+	g_Cvar_Maxrounds = FindConVar("mp_maxrounds");
+	g_Cvar_Fraglimit = FindConVar("mp_fraglimit");
+	g_Cvar_Bonusroundtime = FindConVar("mp_bonusroundtime");
+	
+	if (g_Cvar_Winlimit != INVALID_HANDLE || g_Cvar_Maxrounds != INVALID_HANDLE)
+	{
+		decl String:folder[64];
+		GetGameFolderName(folder, sizeof(folder));
+
+		if (strcmp(folder, "tf") == 0)
+		{
+			HookEvent("teamplay_win_panel", Event_TeamPlayWinPanel);
+			HookEvent("teamplay_restart_round", Event_TFRestartRound);
+			HookEvent("arena_win_panel", Event_TeamPlayWinPanel);
+		}
+		else if (strcmp(folder, "nucleardawn") == 0)
+		{
+			HookEvent("round_win", Event_RoundEnd);
+		}
+		else
+		{
+			HookEvent("round_end", Event_RoundEnd);
+		}
+	}
+	
+	if (g_Cvar_Fraglimit != INVALID_HANDLE)
+	{
+		HookEvent("player_death", Event_PlayerDeath);		
+	}
+	
+	AutoExecConfig(true, "mapchooser");
+	
+	//Change the mp_bonusroundtime max so that we have time to display the vote
+	//If you display a vote during bonus time good defaults are 17 vote duration and 19 mp_bonustime
+	if (g_Cvar_Bonusroundtime != INVALID_HANDLE)
+	{
+		SetConVarBounds(g_Cvar_Bonusroundtime, ConVarBound_Upper, true, 30.0);		
+	}
+	
+	g_NominationsResetForward = CreateGlobalForward("OnNominationRemoved", ET_Ignore, Param_String, Param_Cell);
+	g_MapVoteStartedForward = CreateGlobalForward("OnMapVoteStarted", ET_Ignore);
+}
+
+public APLRes:AskPluginLoad2(Handle:myself, bool:late, String:error[], err_max)
+{
+	RegPluginLibrary("mapchooser");	
+	
+	CreateNative("NominateMap", Native_NominateMap);
+	CreateNative("RemoveNominationByMap", Native_RemoveNominationByMap);
+	CreateNative("RemoveNominationByOwner", Native_RemoveNominationByOwner);
+	CreateNative("InitiateMapChooserVote", Native_InitiateVote);
+	CreateNative("CanMapChooserStartVote", Native_CanVoteStart);
+	CreateNative("HasEndOfMapVoteFinished", Native_CheckVoteDone);
+	CreateNative("GetExcludeMapList", Native_GetExcludeMapList);
+	CreateNative("GetNominatedMapList", Native_GetNominatedMapList);
+	CreateNative("EndOfMapVoteEnabled", Native_EndOfMapVoteEnabled);
+
+	return APLRes_Success;
+}
+
+public OnConfigsExecuted()
+{
+	if (ReadMapList(g_MapList,
+					 g_mapFileSerial, 
+					 "mapchooser",
+					 MAPLIST_FLAG_CLEARARRAY|MAPLIST_FLAG_MAPSFOLDER)
+		!= INVALID_HANDLE)
+		
+	{
+		if (g_mapFileSerial == -1)
+		{
+			LogError("Unable to create a valid map list.");
+		}
+	}
+	
+	CreateNextVote();
+	SetupTimeleftTimer();
+	
+	g_TotalRounds = 0;
+	
+	g_Extends = 0;
+	
+	g_MapVoteCompleted = false;
+	
+	g_NominateCount = 0;
+	ClearArray(g_NominateList);
+	ClearArray(g_NominateOwners);
+	
+	for (new i=0; i<MAXTEAMS; i++)
+	{
+		g_winCount[i] = 0;	
+	}
+	
+
+	/* Check if mapchooser will attempt to start mapvote during bonus round time - TF2 Only */
+	if ((g_Cvar_Bonusroundtime != INVALID_HANDLE) && !GetConVarInt(g_Cvar_StartRounds))
+	{
+		if (GetConVarFloat(g_Cvar_Bonusroundtime) <= GetConVarFloat(g_Cvar_VoteDuration))
+		{
+			LogError("Warning - Bonus Round Time shorter than Vote Time. Votes during bonus round may not have time to complete");
+		}
+	}
+}
+
+public OnMapEnd()
+{
+	g_HasVoteStarted = false;
+	g_WaitingForVote = false;
+	g_ChangeMapAtRoundEnd = false;
+	g_ChangeMapInProgress = false;
+	
+	g_VoteTimer = INVALID_HANDLE;
+	g_RetryTimer = INVALID_HANDLE;
+	
+	decl String:map[PLATFORM_MAX_PATH];
+	GetCurrentMap(map, sizeof(map));
+	PushArrayString(g_OldMapList, map);
+				
+	if (GetArraySize(g_OldMapList) > GetConVarInt(g_Cvar_ExcludeMaps))
+	{
+		RemoveFromArray(g_OldMapList, 0);
+	}	
+}
+
+public OnClientDisconnect(client)
+{
+	new index = FindValueInArray(g_NominateOwners, client);
+	
+	if (index == -1)
+	{
+		return;
+	}
+	
+	new String:oldmap[PLATFORM_MAX_PATH];
+	GetArrayString(g_NominateList, index, oldmap, sizeof(oldmap));
+	Call_StartForward(g_NominationsResetForward);
+	Call_PushString(oldmap);
+	Call_PushCell(GetArrayCell(g_NominateOwners, index));
+	Call_Finish();
+	
+	RemoveFromArray(g_NominateOwners, index);
+	RemoveFromArray(g_NominateList, index);
+	g_NominateCount--;
+}
+
+public Action:Command_SetNextmap(client, args)
+{
+	if (args < 1)
+	{
+		ReplyToCommand(client, "[SM] Usage: sm_setnextmap <map>");
+		return Plugin_Handled;
+	}
+
+	decl String:map[PLATFORM_MAX_PATH];
+	GetCmdArg(1, map, sizeof(map));
+
+	if (!IsMapValid(map))
+	{
+		ReplyToCommand(client, "[SM] %t", "Map was not found", map);
+		return Plugin_Handled;
+	}
+
+	ShowActivity(client, "%t", "Changed Next Map", map);
+	LogAction(client, -1, "\"%L\" changed nextmap to \"%s\"", client, map);
+
+	SetNextMap(map);
+	g_MapVoteCompleted = true;
+
+	return Plugin_Handled;
+}
+
+public OnMapTimeLeftChanged()
+{
+	if (GetArraySize(g_MapList))
+	{
+		SetupTimeleftTimer();
+	}
+}
+
+SetupTimeleftTimer()
+{
+	new time;
+	if (GetMapTimeLeft(time) && time > 0)
+	{
+		new startTime = GetConVarInt(g_Cvar_StartTime) * 60;
+		if (time - startTime < 0 && GetConVarBool(g_Cvar_EndOfMapVote) && !g_MapVoteCompleted && !g_HasVoteStarted)
+		{
+			InitiateVote(MapChange_MapEnd, INVALID_HANDLE);		
+		}
+		else
+		{
+			if (g_VoteTimer != INVALID_HANDLE)
+			{
+				KillTimer(g_VoteTimer);
+				g_VoteTimer = INVALID_HANDLE;
+			}	
+			
+			//g_VoteTimer = CreateTimer(float(time - startTime), Timer_StartMapVote, _, TIMER_FLAG_NO_MAPCHANGE);
+			new Handle:data;
+			g_VoteTimer = CreateDataTimer(float(time - startTime), Timer_StartMapVote, data, TIMER_FLAG_NO_MAPCHANGE);
+			WritePackCell(data, _:MapChange_MapEnd);
+			WritePackCell(data, _:INVALID_HANDLE);
+			ResetPack(data);
+		}		
+	}
+}
+
+public Action:Timer_StartMapVote(Handle:timer, Handle:data)
+{
+	if (timer == g_RetryTimer)
+	{
+		g_WaitingForVote = false;
+		g_RetryTimer = INVALID_HANDLE;
+	}
+	else
+	{
+		g_VoteTimer = INVALID_HANDLE;
+	}
+	
+	if (!GetArraySize(g_MapList) || !GetConVarBool(g_Cvar_EndOfMapVote) || g_MapVoteCompleted || g_HasVoteStarted)
+	{
+		return Plugin_Stop;
+	}
+	
+	new MapChange:mapChange = MapChange:ReadPackCell(data);
+	new Handle:hndl = Handle:ReadPackCell(data);
+
+	InitiateVote(mapChange, hndl);
+
+	return Plugin_Stop;
+}
+
+public Event_TFRestartRound(Handle:event, const String:name[], bool:dontBroadcast)
+{
+	/* Game got restarted - reset our round count tracking */
+	g_TotalRounds = 0;	
+}
+
+public Event_TeamPlayWinPanel(Handle:event, const String:name[], bool:dontBroadcast)
+{
+	if (g_ChangeMapAtRoundEnd)
+	{
+		g_ChangeMapAtRoundEnd = false;
+		CreateTimer(2.0, Timer_ChangeMap, INVALID_HANDLE, TIMER_FLAG_NO_MAPCHANGE);
+		g_ChangeMapInProgress = true;
+	}
+	
+	new bluescore = GetEventInt(event, "blue_score");
+	new redscore = GetEventInt(event, "red_score");
+		
+	if(GetEventInt(event, "round_complete") == 1 || StrEqual(name, "arena_win_panel"))
+	{
+		g_TotalRounds++;
+		
+		if (!GetArraySize(g_MapList) || g_HasVoteStarted || g_MapVoteCompleted || !GetConVarBool(g_Cvar_EndOfMapVote))
+		{
+			return;
+		}
+		
+		CheckMaxRounds(g_TotalRounds);
+		
+		switch(GetEventInt(event, "winning_team"))
+		{
+			case 3:
+			{
+				CheckWinLimit(bluescore);
+			}
+			case 2:
+			{
+				CheckWinLimit(redscore);				
+			}			
+			//We need to do nothing on winning_team == 0 this indicates stalemate.
+			default:
+			{
+				return;
+			}			
+		}
+	}
+}
+/* You ask, why don't you just use team_score event? And I answer... Because CSS doesn't. */
+public Event_RoundEnd(Handle:event, const String:name[], bool:dontBroadcast)
+{
+	if (g_ChangeMapAtRoundEnd)
+	{
+		g_ChangeMapAtRoundEnd = false;
+		CreateTimer(2.0, Timer_ChangeMap, INVALID_HANDLE, TIMER_FLAG_NO_MAPCHANGE);
+		g_ChangeMapInProgress = true;
+	}
+	
+	new winner;
+	if (strcmp(name, "round_win") == 0)
+	{
+		// Nuclear Dawn
+		winner = GetEventInt(event, "team");
+	}
+	else
+	{
+		winner = GetEventInt(event, "winner");
+	}
+	
+	if (winner == 0 || winner == 1 || !GetConVarBool(g_Cvar_EndOfMapVote))
+	{
+		return;
+	}
+	
+	if (winner >= MAXTEAMS)
+	{
+		SetFailState("Mod exceed maximum team count - Please file a bug report.");	
+	}
+
+	g_TotalRounds++;
+	
+	g_winCount[winner]++;
+	
+	if (!GetArraySize(g_MapList) || g_HasVoteStarted || g_MapVoteCompleted)
+	{
+		return;
+	}
+	
+	CheckWinLimit(g_winCount[winner]);
+	CheckMaxRounds(g_TotalRounds);
+}
+
+public CheckWinLimit(winner_score)
+{	
+	if (g_Cvar_Winlimit != INVALID_HANDLE)
+	{
+		new winlimit = GetConVarInt(g_Cvar_Winlimit);
+		if (winlimit)
+		{			
+			if (winner_score >= (winlimit - GetConVarInt(g_Cvar_StartRounds)))
+			{
+				InitiateVote(MapChange_MapEnd, INVALID_HANDLE);
+			}
+		}
+	}
+}
+
+public CheckMaxRounds(roundcount)
+{		
+	if (g_Cvar_Maxrounds != INVALID_HANDLE)
+	{
+		new maxrounds = GetConVarInt(g_Cvar_Maxrounds);
+		if (maxrounds)
+		{
+			if (roundcount >= (maxrounds - GetConVarInt(g_Cvar_StartRounds)))
+			{
+				InitiateVote(MapChange_MapEnd, INVALID_HANDLE);
+			}			
+		}
+	}
+}
+
+public Event_PlayerDeath(Handle:event, const String:name[], bool:dontBroadcast)
+{
+	if (!GetArraySize(g_MapList) || g_Cvar_Fraglimit == INVALID_HANDLE || g_HasVoteStarted)
+	{
+		return;
+	}
+	
+	if (!GetConVarInt(g_Cvar_Fraglimit) || !GetConVarBool(g_Cvar_EndOfMapVote))
+	{
+		return;
+	}
+
+	if (g_MapVoteCompleted)
+	{
+		return;
+	}
+
+	new fragger = GetClientOfUserId(GetEventInt(event, "attacker"));
+
+	if (!fragger)
+	{
+		return;
+	}
+
+	if (GetClientFrags(fragger) >= (GetConVarInt(g_Cvar_Fraglimit) - GetConVarInt(g_Cvar_StartFrags)))
+	{
+		InitiateVote(MapChange_MapEnd, INVALID_HANDLE);
+	}
+}
+
+public Action:Command_Mapvote(client, args)
+{
+	InitiateVote(MapChange_MapEnd, INVALID_HANDLE);
+
+	return Plugin_Handled;	
+}
+
+/**
+ * Starts a new map vote
+ *
+ * @param when			When the resulting map change should occur.
+ * @param inputlist		Optional list of maps to use for the vote, otherwise an internal list of nominations + random maps will be used.
+ * @param noSpecials	Block special vote options like extend/nochange (upgrade this to bitflags instead?)
+ */
+InitiateVote(MapChange:when, Handle:inputlist=INVALID_HANDLE)
+{
+	g_WaitingForVote = true;
+	
+	if (IsVoteInProgress())
+	{
+		// Can't start a vote, try again in 5 seconds.
+		//g_RetryTimer = CreateTimer(5.0, Timer_StartMapVote, _, TIMER_FLAG_NO_MAPCHANGE);
+		
+		new Handle:data;
+		g_RetryTimer = CreateDataTimer(5.0, Timer_StartMapVote, data, TIMER_FLAG_NO_MAPCHANGE);
+		WritePackCell(data, _:when);
+		WritePackCell(data, _:inputlist);
+		ResetPack(data);
+		return;
+	}
+	
+	/* If the main map vote has completed (and chosen result) and its currently changing (not a delayed change) we block further attempts */
+	if (g_MapVoteCompleted && g_ChangeMapInProgress)
+	{
+		return;
+	}
+	
+	g_ChangeTime = when;
+	
+	g_WaitingForVote = false;
+		
+	g_HasVoteStarted = true;
+	g_VoteMenu = CreateMenu(Handler_MapVoteMenu, MenuAction:MENU_ACTIONS_ALL);
+	SetMenuTitle(g_VoteMenu, "Vote Nextmap");
+	SetVoteResultCallback(g_VoteMenu, Handler_MapVoteFinished);
+
+	/* Call OnMapVoteStarted() Forward */
+	Call_StartForward(g_MapVoteStartedForward);
+	Call_Finish();
+	
+	/**
+	 * TODO: Make a proper decision on when to clear the nominations list.
+	 * Currently it clears when used, and stays if an external list is provided.
+	 * Is this the right thing to do? External lists will probably come from places
+	 * like sm_mapvote from the adminmenu in the future.
+	 */
+	 
+	decl String:map[PLATFORM_MAX_PATH];
+	
+	/* No input given - User our internal nominations and maplist */
+	if (inputlist == INVALID_HANDLE)
+	{
+		new nominateCount = GetArraySize(g_NominateList);
+		new voteSize = GetConVarInt(g_Cvar_IncludeMaps);
+		
+		/* Smaller of the two - It should be impossible for nominations to exceed the size though (cvar changed mid-map?) */
+		new nominationsToAdd = nominateCount >= voteSize ? voteSize : nominateCount;
+		
+		
+		for (new i=0; i<nominationsToAdd; i++)
+		{
+			GetArrayString(g_NominateList, i, map, sizeof(map));
+			AddMenuItem(g_VoteMenu, map, map);
+			RemoveStringFromArray(g_NextMapList, map);
+			
+			/* Notify Nominations that this map is now free */
+			Call_StartForward(g_NominationsResetForward);
+			Call_PushString(map);
+			Call_PushCell(GetArrayCell(g_NominateOwners, i));
+			Call_Finish();
+		}
+		
+		/* Clear out the rest of the nominations array */
+		for (new i=nominationsToAdd; i<nominateCount; i++)
+		{
+			GetArrayString(g_NominateList, i, map, sizeof(map));
+			/* These maps shouldn't be excluded from the vote as they weren't really nominated at all */
+			
+			/* Notify Nominations that this map is now free */
+			Call_StartForward(g_NominationsResetForward);
+			Call_PushString(map);
+			Call_PushCell(GetArrayCell(g_NominateOwners, i));
+			Call_Finish();			
+		}
+		
+		/* There should currently be 'nominationsToAdd' unique maps in the vote */
+		
+		new i = nominationsToAdd;
+		new count = 0;
+		new availableMaps = GetArraySize(g_NextMapList);
+		
+		while (i < voteSize)
+		{
+			GetArrayString(g_NextMapList, count, map, sizeof(map));
+			count++;
+			
+			/* Insert the map and increment our count */
+			AddMenuItem(g_VoteMenu, map, map);
+			i++;
+			
+			if (count >= availableMaps)
+			{
+				//Run out of maps, this will have to do.
+				break;	
+			}
+		}
+		
+		/* Wipe out our nominations list - Nominations have already been informed of this */
+		ClearArray(g_NominateOwners);
+		ClearArray(g_NominateList);
+	}
+	else //We were given a list of maps to start the vote with
+	{
+		new size = GetArraySize(inputlist);
+		
+		for (new i=0; i<size; i++)
+		{
+			GetArrayString(inputlist, i, map, sizeof(map));
+			
+			if (IsMapValid(map))
+			{
+				AddMenuItem(g_VoteMenu, map, map);
+			}	
+		}
+	}
+	
+	/* Do we add any special items? */
+	if ((when == MapChange_Instant || when == MapChange_RoundEnd) && GetConVarBool(g_Cvar_DontChange))
+	{
+		AddMenuItem(g_VoteMenu, VOTE_DONTCHANGE, "Don't Change");
+	}
+	else if (GetConVarBool(g_Cvar_Extend) && g_Extends < GetConVarInt(g_Cvar_Extend))
+	{
+		AddMenuItem(g_VoteMenu, VOTE_EXTEND, "Extend Map");
+	}
+	
+	new voteDuration = GetConVarInt(g_Cvar_VoteDuration);
+
+	SetMenuExitButton(g_VoteMenu, false);
+	VoteMenuToAll(g_VoteMenu, voteDuration);
+
+	LogAction(-1, -1, "Voting for next map has started.");
+	PrintToChatAll("[SM] %t", "Nextmap Voting Started");
+}
+
+public Handler_VoteFinishedGeneric(Handle:menu,
+						   num_votes, 
+						   num_clients,
+						   const client_info[][2], 
+						   num_items,
+						   const item_info[][2])
+{
+	decl String:map[PLATFORM_MAX_PATH];
+	GetMenuItem(menu, item_info[0][VOTEINFO_ITEM_INDEX], map, sizeof(map));
+
+	if (strcmp(map, VOTE_EXTEND, false) == 0)
+	{
+		g_Extends++;
+		
+		new time;
+		if (GetMapTimeLimit(time))
+		{
+			if (time > 0)
+			{
+				ExtendMapTimeLimit(GetConVarInt(g_Cvar_ExtendTimeStep)*60);						
+			}
+		}
+		
+		if (g_Cvar_Winlimit != INVALID_HANDLE)
+		{
+			new winlimit = GetConVarInt(g_Cvar_Winlimit);
+			if (winlimit)
+			{
+				SetConVarInt(g_Cvar_Winlimit, winlimit + GetConVarInt(g_Cvar_ExtendRoundStep));
+			}					
+		}
+		
+		if (g_Cvar_Maxrounds != INVALID_HANDLE)
+		{
+			new maxrounds = GetConVarInt(g_Cvar_Maxrounds);
+			if (maxrounds)
+			{
+				SetConVarInt(g_Cvar_Maxrounds, maxrounds + GetConVarInt(g_Cvar_ExtendRoundStep));
+			}
+		}
+		
+		if (g_Cvar_Fraglimit != INVALID_HANDLE)
+		{
+			new fraglimit = GetConVarInt(g_Cvar_Fraglimit);
+			if (fraglimit)
+			{
+				SetConVarInt(g_Cvar_Fraglimit, fraglimit + GetConVarInt(g_Cvar_ExtendFragStep));						
+			}
+		}
+
+		PrintToChatAll("[SM] %t", "Current Map Extended", RoundToFloor(float(item_info[0][VOTEINFO_ITEM_VOTES])/float(num_votes)*100), num_votes);
+		LogAction(-1, -1, "Voting for next map has finished. The current map has been extended.");
+		
+		// We extended, so we'll have to vote again.
+		g_HasVoteStarted = false;
+		CreateNextVote();
+		SetupTimeleftTimer();
+		
+	}
+	else if (strcmp(map, VOTE_DONTCHANGE, false) == 0)
+	{
+		PrintToChatAll("[SM] %t", "Current Map Stays", RoundToFloor(float(item_info[0][VOTEINFO_ITEM_VOTES])/float(num_votes)*100), num_votes);
+		LogAction(-1, -1, "Voting for next map has finished. 'No Change' was the winner");
+		
+		g_HasVoteStarted = false;
+		CreateNextVote();
+		SetupTimeleftTimer();
+	}
+	else
+	{
+		if (g_ChangeTime == MapChange_MapEnd)
+		{
+			SetNextMap(map);
+		}
+		else if (g_ChangeTime == MapChange_Instant)
+		{
+			new Handle:data;
+			CreateDataTimer(2.0, Timer_ChangeMap, data);
+			WritePackString(data, map);
+			g_ChangeMapInProgress = false;
+		}
+		else // MapChange_RoundEnd
+		{
+			SetNextMap(map);
+			g_ChangeMapAtRoundEnd = true;
+		}
+		
+		g_HasVoteStarted = false;
+		g_MapVoteCompleted = true;
+		
+		PrintToChatAll("[SM] %t", "Nextmap Voting Finished", map, RoundToFloor(float(item_info[0][VOTEINFO_ITEM_VOTES])/float(num_votes)*100), num_votes);
+		LogAction(-1, -1, "Voting for next map has finished. Nextmap: %s.", map);
+	}	
+}
+
+public Handler_MapVoteFinished(Handle:menu,
+						   num_votes, 
+						   num_clients,
+						   const client_info[][2], 
+						   num_items,
+						   const item_info[][2])
+{
+	if (GetConVarBool(g_Cvar_RunOff) && num_items > 1)
+	{
+		new Float:winningvotes = float(item_info[0][VOTEINFO_ITEM_VOTES]);
+		new Float:required = num_votes * (GetConVarFloat(g_Cvar_RunOffPercent) / 100.0);
+		
+		if (winningvotes <= required)
+		{
+			/* Insufficient Winning margin - Lets do a runoff */
+			g_VoteMenu = CreateMenu(Handler_MapVoteMenu, MenuAction:MENU_ACTIONS_ALL);
+			SetMenuTitle(g_VoteMenu, "Runoff Vote Nextmap");
+			SetVoteResultCallback(g_VoteMenu, Handler_VoteFinishedGeneric);
+
+			decl String:map[PLATFORM_MAX_PATH];
+			decl String:info1[PLATFORM_MAX_PATH];
+			decl String:info2[PLATFORM_MAX_PATH];
+			
+			GetMenuItem(menu, item_info[0][VOTEINFO_ITEM_INDEX], map, sizeof(map), _, info1, sizeof(info1));
+			AddMenuItem(g_VoteMenu, map, info1);
+			GetMenuItem(menu, item_info[1][VOTEINFO_ITEM_INDEX], map, sizeof(map), _, info2, sizeof(info2));
+			AddMenuItem(g_VoteMenu, map, info2);
+			
+			new voteDuration = GetConVarInt(g_Cvar_VoteDuration);
+			SetMenuExitButton(g_VoteMenu, false);
+			VoteMenuToAll(g_VoteMenu, voteDuration);
+			
+			/* Notify */
+			new Float:map1percent = float(item_info[0][VOTEINFO_ITEM_VOTES])/ float(num_votes) * 100;
+			new Float:map2percent = float(item_info[1][VOTEINFO_ITEM_VOTES])/ float(num_votes) * 100;
+			
+			
+			PrintToChatAll("[SM] %t", "Starting Runoff", GetConVarFloat(g_Cvar_RunOffPercent), info1, map1percent, info2, map2percent);
+			LogMessage("Voting for next map was indecisive, beginning runoff vote");
+					
+			return;
+		}
+	}
+	
+	Handler_VoteFinishedGeneric(menu, num_votes, num_clients, client_info, num_items, item_info);
+}
+
+public Handler_MapVoteMenu(Handle:menu, MenuAction:action, param1, param2)
+{
+	switch (action)
+	{
+		case MenuAction_End:
+		{
+			g_VoteMenu = INVALID_HANDLE;
+			CloseHandle(menu);
+		}
+		
+		case MenuAction_Display:
+		{
+	 		decl String:buffer[255];
+			Format(buffer, sizeof(buffer), "%T", "Vote Nextmap", param1);
+
+			new Handle:panel = Handle:param2;
+			SetPanelTitle(panel, buffer);
+		}		
+		
+		case MenuAction_DisplayItem:
+		{
+			if (GetMenuItemCount(menu) - 1 == param2)
+			{
+				decl String:map[PLATFORM_MAX_PATH], String:buffer[255];
+				GetMenuItem(menu, param2, map, sizeof(map));
+				if (strcmp(map, VOTE_EXTEND, false) == 0)
+				{
+					Format(buffer, sizeof(buffer), "%T", "Extend Map", param1);
+					return RedrawMenuItem(buffer);
+				}
+				else if (strcmp(map, VOTE_DONTCHANGE, false) == 0)
+				{
+					Format(buffer, sizeof(buffer), "%T", "Dont Change", param1);
+					return RedrawMenuItem(buffer);					
+				}
+			}
+		}		
+	
+		case MenuAction_VoteCancel:
+		{
+			// If we receive 0 votes, pick at random.
+			if (param1 == VoteCancel_NoVotes && GetConVarBool(g_Cvar_NoVoteMode))
+			{
+				new count = GetMenuItemCount(menu);
+				new item = GetRandomInt(0, count - 1);
+				decl String:map[PLATFORM_MAX_PATH];
+				GetMenuItem(menu, item, map, sizeof(map));
+				
+				while (strcmp(map, VOTE_EXTEND, false) == 0)
+				{
+					item = GetRandomInt(0, count - 1);
+					GetMenuItem(menu, item, map, sizeof(map));
+				}
+				
+				SetNextMap(map);			
+			}
+			else
+			{
+				// We were actually cancelled. I guess we do nothing.
+			}
+			
+			g_HasVoteStarted = false;
+			g_MapVoteCompleted = true;
+		}
+	}
+	
+	return 0;
+}
+
+public Action:Timer_ChangeMap(Handle:hTimer, Handle:dp)
+{
+	g_ChangeMapInProgress = false;
+	
+	new String:map[PLATFORM_MAX_PATH];
+	
+	if (dp == INVALID_HANDLE)
+	{
+		if (!GetNextMap(map, sizeof(map)))
+		{
+			//No passed map and no set nextmap. fail!
+			return Plugin_Stop;	
+		}
+	}
+	else
+	{
+		ResetPack(dp);
+		ReadPackString(dp, map, sizeof(map));		
+	}
+	
+	ForceChangeLevel(map, "Map Vote");
+	
+	return Plugin_Stop;
+}
+
+bool:RemoveStringFromArray(Handle:array, String:str[])
+{
+	new index = FindStringInArray(array, str);
+	if (index != -1)
+	{
+		RemoveFromArray(array, index);
+		return true;
+	}
+	
+	return false;
+}
+
+CreateNextVote()
+{
+	assert(g_NextMapList)
+	ClearArray(g_NextMapList);
+	
+	decl String:map[PLATFORM_MAX_PATH];
+	new Handle:tempMaps  = CloneArray(g_MapList);
+	
+	GetCurrentMap(map, sizeof(map));
+	RemoveStringFromArray(tempMaps, map);
+	
+	if (GetConVarInt(g_Cvar_ExcludeMaps) && GetArraySize(tempMaps) > GetConVarInt(g_Cvar_ExcludeMaps))
+	{
+		for (new i = 0; i < GetArraySize(g_OldMapList); i++)
+		{
+			GetArrayString(g_OldMapList, i, map, sizeof(map));
+			RemoveStringFromArray(tempMaps, map);
+		}	
+	}
+
+	new limit = (GetConVarInt(g_Cvar_IncludeMaps) < GetArraySize(tempMaps) ? GetConVarInt(g_Cvar_IncludeMaps) : GetArraySize(tempMaps));
+	for (new i = 0; i < limit; i++)
+	{
+		new b = GetRandomInt(0, GetArraySize(tempMaps) - 1);
+		GetArrayString(tempMaps, b, map, sizeof(map));		
+		PushArrayString(g_NextMapList, map);
+		RemoveFromArray(tempMaps, b);
+	}
+	
+	CloseHandle(tempMaps);
+}
+
+bool:CanVoteStart()
+{
+	if (g_WaitingForVote || g_HasVoteStarted)
+	{
+		return false;	
+	}
+	
+	return true;
+}
+
+NominateResult:InternalNominateMap(String:map[], bool:force, owner)
+{
+	if (!IsMapValid(map))
+	{
+		return Nominate_InvalidMap;
+	}
+	
+	new index;
+
+	/* Look to replace an existing nomination by this client - Nominations made with owner = 0 aren't replaced */
+	if (owner && ((index = FindValueInArray(g_NominateOwners, owner)) != -1))
+	{
+		new String:oldmap[PLATFORM_MAX_PATH];
+		GetArrayString(g_NominateList, index, oldmap, sizeof(oldmap));
+		Call_StartForward(g_NominationsResetForward);
+		Call_PushString(oldmap);
+		Call_PushCell(owner);
+		Call_Finish();
+		
+		SetArrayString(g_NominateList, index, map);
+		return Nominate_Replaced;
+	}
+	
+	/* Too many nominated maps. */
+	if (g_NominateCount >= GetConVarInt(g_Cvar_IncludeMaps) && !force)
+	{
+		return Nominate_VoteFull;
+	}
+	
+	/* Map already in the vote */
+	if (FindStringInArray(g_NominateList, map) != -1)
+	{
+		return Nominate_AlreadyInVote;	
+	}
+	
+	
+	PushArrayString(g_NominateList, map);
+	PushArrayCell(g_NominateOwners, owner);
+	g_NominateCount++;
+	
+	while (GetArraySize(g_NominateList) > GetConVarInt(g_Cvar_IncludeMaps))
+	{
+		new String:oldmap[PLATFORM_MAX_PATH];
+		GetArrayString(g_NominateList, 0, oldmap, sizeof(oldmap));
+		Call_StartForward(g_NominationsResetForward);
+		Call_PushString(oldmap);
+		Call_PushCell(GetArrayCell(g_NominateOwners, 0));
+		Call_Finish();
+		
+		RemoveFromArray(g_NominateList, 0);
+		RemoveFromArray(g_NominateOwners, 0);
+	}
+	
+	return Nominate_Added;
+}
+
+/* Add natives to allow nominate and initiate vote to be call */
+
+/* native  bool:NominateMap(const String:map[], bool:force, &NominateError:error); */
+public Native_NominateMap(Handle:plugin, numParams)
+{
+	new len;
+	GetNativeStringLength(1, len);
+	
+	if (len <= 0)
+	{
+	  return false;
+	}
+	
+	new String:map[len+1];
+	GetNativeString(1, map, len+1);
+	
+	return _:InternalNominateMap(map, GetNativeCell(2), GetNativeCell(3));
+}
+
+bool:InternalRemoveNominationByMap(String:map[])
+{	
+	for (new i = 0; i < GetArraySize(g_NominateList); i++)
+	{
+		new String:oldmap[PLATFORM_MAX_PATH];
+		GetArrayString(g_NominateList, i, oldmap, sizeof(oldmap));
+
+		if(strcmp(map, oldmap, false) == 0)
+		{
+			Call_StartForward(g_NominationsResetForward);
+			Call_PushString(oldmap);
+			Call_PushCell(GetArrayCell(g_NominateOwners, i));
+			Call_Finish();
+
+			RemoveFromArray(g_NominateList, i);
+			RemoveFromArray(g_NominateOwners, i);
+			g_NominateCount--;
+
+			return true;
+		}
+	}
+	
+	return false;
+}
+
+/* native  bool:RemoveNominationByMap(const String:map[]); */
+public Native_RemoveNominationByMap(Handle:plugin, numParams)
+{
+	new len;
+	GetNativeStringLength(1, len);
+	
+	if (len <= 0)
+	{
+	  return false;
+	}
+	
+	new String:map[len+1];
+	GetNativeString(1, map, len+1);
+	
+	return _:InternalRemoveNominationByMap(map);
+}
+
+bool:InternalRemoveNominationByOwner(owner)
+{	
+	new index;
+
+	if (owner && ((index = FindValueInArray(g_NominateOwners, owner)) != -1))
+	{
+		new String:oldmap[PLATFORM_MAX_PATH];
+		GetArrayString(g_NominateList, index, oldmap, sizeof(oldmap));
+
+		Call_StartForward(g_NominationsResetForward);
+		Call_PushString(oldmap);
+		Call_PushCell(owner);
+		Call_Finish();
+
+		RemoveFromArray(g_NominateList, index);
+		RemoveFromArray(g_NominateOwners, index);
+		g_NominateCount--;
+
+		return true;
+	}
+	
+	return false;
+}
+
+/* native  bool:RemoveNominationByOwner(owner); */
+public Native_RemoveNominationByOwner(Handle:plugin, numParams)
+{	
+	return _:InternalRemoveNominationByOwner(GetNativeCell(1));
+}
+
+/* native InitiateMapChooserVote(); */
+public Native_InitiateVote(Handle:plugin, numParams)
+{
+	new MapChange:when = MapChange:GetNativeCell(1);
+	new Handle:inputarray = Handle:GetNativeCell(2);
+	
+	LogAction(-1, -1, "Starting map vote because outside request");
+	InitiateVote(when, inputarray);
+}
+
+public Native_CanVoteStart(Handle:plugin, numParams)
+{
+	return CanVoteStart();	
+}
+
+public Native_CheckVoteDone(Handle:plugin, numParams)
+{
+	return g_MapVoteCompleted;
+}
+
+public Native_EndOfMapVoteEnabled(Handle:plugin, numParams)
+{
+	return GetConVarBool(g_Cvar_EndOfMapVote);
+}
+
+public Native_GetExcludeMapList(Handle:plugin, numParams)
+{
+	new Handle:array = Handle:GetNativeCell(1);
+	
+	if (array == INVALID_HANDLE)
+	{
+		return;	
+	}
+	new size = GetArraySize(g_OldMapList);
+	decl String:map[PLATFORM_MAX_PATH];
+	
+	for (new i=0; i<size; i++)
+	{
+		GetArrayString(g_OldMapList, i, map, sizeof(map));
+		PushArrayString(array, map);	
+	}
+	
+	return;
+}
+
+public Native_GetNominatedMapList(Handle:plugin, numParams)
+{
+	new Handle:maparray = Handle:GetNativeCell(1);
+	new Handle:ownerarray = Handle:GetNativeCell(2);
+	
+	if (maparray == INVALID_HANDLE)
+		return;
+
+	decl String:map[PLATFORM_MAX_PATH];
+
+	for (new i = 0; i < GetArraySize(g_NominateList); i++)
+	{
+		GetArrayString(g_NominateList, i, map, sizeof(map));
+		PushArrayString(maparray, map);
+
+		// If the optional parameter for an owner list was passed, then we need to fill that out as well
+		if(ownerarray != INVALID_HANDLE)
+		{
+			new index = GetArrayCell(g_NominateOwners, i);
+			PushArrayCell(ownerarray, index);
+		}
+	}
+
+	return;
+}
diff --git a/samples/Standard ML/Foo.ML b/samples/Standard ML/Foo.ML
new file mode 100644
index 00000000..2bbb789e
--- /dev/null
+++ b/samples/Standard ML/Foo.ML	
@@ -0,0 +1,75 @@
+
+structure LazyBase:> LAZY_BASE =
+   struct
+      type 'a lazy = unit -> 'a
+
+      exception Undefined
+
+      fun delay f = f
+
+      fun force f = f()
+
+      val undefined = fn () => raise Undefined
+   end
+
+structure LazyMemoBase:> LAZY_BASE =
+   struct 
+
+      datatype 'a susp = NotYet of unit -> 'a
+                       | Done of 'a
+
+      type 'a lazy = unit -> 'a susp ref
+
+      exception Undefined
+
+      fun delay f = 
+          let 
+             val r = ref (NotYet f)
+          in
+             fn () => r
+          end
+
+      fun force f = 
+          case f() of
+             ref (Done x) => x
+           | r as ref (NotYet f') =>
+             let
+                val a = f'()
+             in
+                r := Done a
+              ; a
+             end
+
+      val undefined = fn () => raise Undefined
+   end
+
+functor LazyFn(B: LAZY_BASE): LAZY' =
+   struct
+
+      open B
+
+      fun inject x = delay (fn () => x)
+
+      fun isUndefined x =
+          (ignore (force x)
+         ; false)
+          handle Undefined => true
+                              
+      fun toString f x = if isUndefined x then "_|_" else f (force x)
+
+      fun eqBy p (x,y) = p(force x,force y)
+      fun eq (x,y) = eqBy op= (x,y)
+      fun compare p (x,y) = p(force x,force y)
+
+      structure Ops = 
+         struct 
+            val ! = force
+            val ? = inject
+         end
+
+      fun map f x = delay (fn () => f (force x))
+
+   end
+
+structure Lazy' = LazyFn(LazyBase)
+structure LazyMemo = LazyFn(LazyMemoBase)
diff --git a/samples/Standard ML/RedBlackTree.fun b/samples/Standard ML/RedBlackTree.fun
new file mode 100644
index 00000000..42650efe
--- /dev/null
+++ b/samples/Standard ML/RedBlackTree.fun	
@@ -0,0 +1,254 @@
+(* From Twelf *)
+(* Red/Black Trees *)
+(* Author: Frank Pfenning *)
+
+functor RedBlackTree
+  (type key'
+   val compare : key' * key' -> order)
+  :> TABLE where type key = key' =
+struct
+  type key = key'
+  type 'a entry = key * 'a
+
+  datatype 'a dict =
+    Empty				(* considered black *)
+  | Red of 'a entry * 'a dict * 'a dict
+  | Black of 'a entry * 'a dict * 'a dict
+
+  type 'a Table = 'a dict ref
+
+  (* Representation Invariants *)
+  (*
+     1. The tree is ordered: for every node Red((key1,datum1), left, right) or
+        Black ((key1,datum1), left, right), every key in left is less than
+        key1 and every key in right is greater than key1.
+
+     2. The children of a red node are black (color invariant).
+
+     3. Every path from the root to a leaf has the same number of
+        black nodes, called the black height of the tree.
+  *)
+
+  local
+
+  fun lookup dict key =
+    let
+      fun lk (Empty) = NONE
+	| lk (Red tree) = lk' tree
+        | lk (Black tree) = lk' tree
+      and lk' ((key1, datum1), left, right) =
+	    (case compare(key,key1)
+	       of EQUAL => SOME(datum1)
+	        | LESS => lk left
+		| GREATER => lk right)
+      in
+	lk dict
+      end
+
+  (* val restore_right : 'a dict -> 'a dict *)
+  (*
+     restore_right (Black(e,l,r)) >=> dict
+     where (1) Black(e,l,r) is ordered,
+           (2) Black(e,l,r) has black height n,
+	   (3) color invariant may be violated at the root of r:
+               one of its children might be red.
+     and dict is a re-balanced red/black tree (satisfying all invariants)
+     and same black height n.
+  *)
+  fun restore_right (Black(e, Red lt, Red (rt as (_,Red _,_)))) =
+         Red(e, Black lt, Black rt)	(* re-color *)
+    | restore_right (Black(e, Red lt, Red (rt as (_,_,Red _)))) =
+         Red(e, Black lt, Black rt)	(* re-color *)
+    | restore_right (Black(e, l, Red(re, Red(rle, rll, rlr), rr))) =
+	 (* l is black, deep rotate *)
+	 Black(rle, Red(e, l, rll), Red(re, rlr, rr))
+    | restore_right (Black(e, l, Red(re, rl, rr as Red _))) =
+	 (* l is black, shallow rotate *)
+	 Black(re, Red(e, l, rl), rr)
+    | restore_right dict = dict
+
+  (* restore_left is like restore_right, except *)
+  (* the color invariant may be violated only at the root of left child *)
+  fun restore_left (Black(e, Red (lt as (_,Red _,_)), Red rt)) =
+	 Red(e, Black lt, Black rt)	(* re-color *)
+    | restore_left (Black(e, Red (lt as (_,_,Red _)), Red rt)) =
+	 Red(e, Black lt, Black rt)	(* re-color *)
+    | restore_left (Black(e, Red(le, ll as Red _, lr), r)) =
+	 (* r is black, shallow rotate *)
+	 Black(le, ll, Red(e, lr, r))
+    | restore_left (Black(e, Red(le, ll, Red(lre, lrl, lrr)), r)) =
+	 (* r is black, deep rotate *)
+	 Black(lre, Red(le, ll, lrl), Red(e, lrr, r))
+    | restore_left dict = dict
+
+  fun insert (dict, entry as (key,datum)) =
+    let
+      (* val ins : 'a dict -> 'a dict  inserts entry *)
+      (* ins (Red _) may violate color invariant at root *)
+      (* ins (Black _) or ins (Empty) will be red/black tree *)
+      (* ins preserves black height *)
+      fun ins (Empty) = Red(entry, Empty, Empty)
+	| ins (Red(entry1 as (key1, datum1), left, right)) =
+	  (case compare(key,key1)
+	     of EQUAL => Red(entry, left, right)
+	      | LESS => Red(entry1, ins left, right)
+	      | GREATER => Red(entry1, left, ins right))
+	| ins (Black(entry1 as (key1, datum1), left, right)) =
+	  (case compare(key,key1)
+	     of EQUAL => Black(entry, left, right)
+	      | LESS => restore_left (Black(entry1, ins left, right))
+	      | GREATER => restore_right (Black(entry1, left, ins right)))
+    in
+      case ins dict
+	of Red (t as (_, Red _, _)) => Black t (* re-color *)
+	 | Red (t as (_, _, Red _)) => Black t (* re-color *)
+	 | dict => dict
+    end
+
+  (* function below from .../smlnj-lib/Util/int-redblack-set.sml *)
+  (* Need to check and improve some time *)
+  (* Sun Mar 13 08:22:53 2005 -fp *)
+
+  (* Remove an item.  Returns true if old item found, false otherwise *)
+    local
+      exception NotFound
+      datatype 'a zipper
+	= TOP
+	| LEFTB of ('a entry * 'a dict * 'a zipper)
+	| LEFTR of ('a entry * 'a dict * 'a zipper)
+	| RIGHTB of ('a dict * 'a entry * 'a zipper)
+	| RIGHTR of ('a dict * 'a entry * 'a zipper)
+    in
+    fun delete t key =
+        let
+	  fun zip (TOP, t) = t
+	    | zip (LEFTB(x, b, z), a) = zip(z, Black(x, a, b))
+	    | zip (LEFTR(x, b, z), a) = zip(z, Red(x, a, b))
+	    | zip (RIGHTB(a, x, z), b) = zip(z, Black(x, a, b))
+	    | zip (RIGHTR(a, x, z), b) = zip(z, Red(x, a, b))
+	(* bbZip propagates a black deficit up the tree until either the top
+	 * is reached, or the deficit can be covered.  It returns a boolean
+	 * that is true if there is still a deficit and the zipped tree.
+	 *)
+	  fun bbZip (TOP, t) = (true, t)
+	    | bbZip (LEFTB(x, Red(y, c, d), z), a) = (* case 1L *)
+		bbZip (LEFTR(x, c, LEFTB(y, d, z)), a)
+	    | bbZip (LEFTB(x, Black(w, Red(y, c, d), e), z), a) = (* case 3L *)
+		bbZip (LEFTB(x, Black(y, c, Red(w, d, e)), z), a)
+	    | bbZip (LEFTR(x, Black(w, Red(y, c, d), e), z), a) = (* case 3L *)
+		bbZip (LEFTR(x, Black(y, c, Red(w, d, e)), z), a)
+	    | bbZip (LEFTB(x, Black(y, c, Red(w, d, e)), z), a) = (* case 4L *)
+		(false, zip (z, Black(y, Black(x, a, c), Black(w, d, e))))
+	    | bbZip (LEFTR(x, Black(y, c, Red(w, d, e)), z), a) = (* case 4L *)
+		(false, zip (z, Red(y, Black(x, a, c), Black(w, d, e))))
+	    | bbZip (LEFTR(x, Black(y, c, d), z), a) = (* case 2L *)
+		(false, zip (z, Black(x, a, Red(y, c, d))))
+	    | bbZip (LEFTB(x, Black(y, c, d), z), a) = (* case 2L *)
+		bbZip (z, Black(x, a, Red(y, c, d)))
+	    | bbZip (RIGHTB(Red(y, c, d), x, z), b) = (* case 1R *)
+		bbZip (RIGHTR(d, x, RIGHTB(c, y, z)), b)
+	    | bbZip (RIGHTR(Red(y, c, d), x, z), b) = (* case 1R *)
+		bbZip (RIGHTR(d, x, RIGHTB(c, y, z)), b)
+	    | bbZip (RIGHTB(Black(y, Red(w, c, d), e), x, z), b) = (* case 3R *)
+		bbZip (RIGHTB(Black(w, c, Red(y, d, e)), x, z), b)
+	    | bbZip (RIGHTR(Black(y, Red(w, c, d), e), x, z), b) = (* case 3R *)
+		bbZip (RIGHTR(Black(w, c, Red(y, d, e)), x, z), b)
+	    | bbZip (RIGHTB(Black(y, c, Red(w, d, e)), x, z), b) = (* case 4R *)
+		(false, zip (z, Black(y, c, Black(x, Red(w, d, e), b))))
+	    | bbZip (RIGHTR(Black(y, c, Red(w, d, e)), x, z), b) = (* case 4R *)
+		(false, zip (z, Red(y, c, Black(w, Red(w, d, e), b))))
+	    | bbZip (RIGHTR(Black(y, c, d), x, z), b) = (* case 2R *)
+		(false, zip (z, Black(x, Red(y, c, d), b)))
+	    | bbZip (RIGHTB(Black(y, c, d), x, z), b) = (* case 2R *)
+		bbZip (z, Black(x, Red(y, c, d), b))
+	    | bbZip (z, t) = (false, zip(z, t))
+	  fun delMin (Red(y, Empty, b), z) = (y, (false, zip(z, b)))
+	    | delMin (Black(y, Empty, b), z) = (y, bbZip(z, b))
+	    | delMin (Black(y, a, b), z) = delMin(a, LEFTB(y, b, z))
+	    | delMin (Red(y, a, b), z) = delMin(a, LEFTR(y, b, z))
+	    | delMin (Empty, _) = raise Match
+	  fun joinRed (Empty, Empty, z) = zip(z, Empty)
+	    | joinRed (a, b, z) = let
+		val (x, (needB, b')) = delMin(b, TOP)
+		in
+		  if needB
+		    then #2(bbZip(z, Red(x, a, b')))
+		    else zip(z, Red(x, a, b'))
+		end
+	  fun joinBlack (a, Empty, z) = #2(bbZip(z, a))
+	    | joinBlack (Empty, b, z) = #2(bbZip(z, b))
+	    | joinBlack (a, b, z) = let
+		val (x, (needB, b')) = delMin(b, TOP)
+		in
+		  if needB
+		    then #2(bbZip(z, Black(x, a, b')))
+		    else zip(z, Black(x, a, b'))
+		end
+	  fun del (Empty, z) = raise NotFound
+	    | del (Black(entry1 as (key1, datum1), a, b), z) =
+	      (case compare(key,key1)
+		 of EQUAL => joinBlack (a, b, z)
+                  | LESS => del (a, LEFTB(entry1, b, z))
+		  | GREATER => del (b, RIGHTB(a, entry1, z)))
+	    | del (Red(entry1 as (key1, datum1), a, b), z) =
+	      (case compare(key,key1)
+                 of EQUAL => joinRed (a, b, z)
+                  | LESS => del (a, LEFTR(entry1, b, z))
+                  | GREATER => del (b, RIGHTR(a, entry1, z)))
+	  in
+	    (del(t, TOP); true) handle NotFound => false
+	  end
+    end (* local *)
+
+  (* use non-imperative version? *)
+  fun insertShadow (dict, entry as (key,datum)) =
+      let val oldEntry = ref NONE (* : 'a entry option ref *)
+          fun ins (Empty) = Red(entry, Empty, Empty)
+	    | ins (Red(entry1 as (key1, datum1), left, right)) =
+	      (case compare(key,key1)
+		 of EQUAL => (oldEntry := SOME(entry1);
+			      Red(entry, left, right))
+	          | LESS => Red(entry1, ins left, right)
+	          | GREATER => Red(entry1, left, ins right))
+	    | ins (Black(entry1 as (key1, datum1), left, right)) =
+	      (case compare(key,key1)
+		 of EQUAL => (oldEntry := SOME(entry1);
+			      Black(entry, left, right))
+	          | LESS => restore_left (Black(entry1, ins left, right))
+	          | GREATER => restore_right (Black(entry1, left, ins right)))
+      in
+	(oldEntry := NONE;
+	 ((case ins dict
+	     of Red (t as (_, Red _, _)) => Black t (* re-color *)
+	      | Red (t as (_, _, Red _)) => Black t (* re-color *)
+	      | dict => dict),
+	  !oldEntry))
+      end
+  
+  fun app f dict =
+      let fun ap (Empty) = ()
+	    | ap (Red tree) = ap' tree
+	    | ap (Black tree) = ap' tree
+	  and ap' (entry1, left, right) =
+	      (ap left; f entry1; ap right)
+      in
+	ap dict
+      end
+
+  in
+    fun new (n) = ref (Empty) (* ignore size hint *)
+    val insert = (fn table => fn entry => (table := insert (!table, entry)))
+    val insertShadow =
+        (fn table => fn entry => 
+	 let
+	   val (dict, oldEntry) = insertShadow (!table, entry)
+	 in
+	   (table := dict; oldEntry)
+	 end)
+    val lookup = (fn table => fn key => lookup (!table) key)
+    val delete = (fn table => fn key => (delete (!table) key; ()))
+    val clear = (fn table => (table := Empty))
+    val app = (fn f => fn table => app f (!table))
+  end
+
+end;  (* functor RedBlackTree *)
diff --git a/samples/Standard ML/main.fun b/samples/Standard ML/main.fun
new file mode 100644
index 00000000..73ba50f6
--- /dev/null
+++ b/samples/Standard ML/main.fun	
@@ -0,0 +1,1470 @@
+(* Copyright (C) 2010-2011,2013 Matthew Fluet.
+ * Copyright (C) 1999-2009 Henry Cejtin, Matthew Fluet, Suresh
+ *    Jagannathan, and Stephen Weeks.
+ * Copyright (C) 1997-2000 NEC Research Institute.
+ *
+ * MLton is released under a BSD-style license.
+ * See the file MLton-LICENSE for details.
+ *)
+
+functor Main (S: MAIN_STRUCTS): MAIN =
+struct
+
+open S
+
+structure Compile = Compile ()
+
+structure Place =
+   struct
+      datatype t = Files | Generated | MLB | O | OUT | SML | TypeCheck
+
+      val toInt: t -> int =
+         fn MLB => 1
+          | SML => 1
+          | Files => 2
+          | TypeCheck => 4
+          | Generated => 5
+          | O => 6
+          | OUT => 7
+
+      val toString =
+         fn Files => "files"
+          | SML => "sml"
+          | MLB => "mlb"
+          | Generated => "g"
+          | O => "o"
+          | OUT => "out"
+          | TypeCheck => "tc"
+
+      fun compare (p, p') = Int.compare (toInt p, toInt p')
+   end
+
+structure OptPred =
+   struct
+      datatype t =
+         Target of string
+       | Yes
+   end
+
+structure Show =
+   struct
+      datatype t = Anns | PathMap
+   end
+
+val gcc: string ref = ref "<unset>"
+val arScript: string ref = ref "<unset>"
+val asOpts: {opt: string, pred: OptPred.t} list ref = ref []
+val ccOpts: {opt: string, pred: OptPred.t} list ref = ref []
+val linkOpts: {opt: string, pred: OptPred.t} list ref = ref []
+
+val buildConstants: bool ref = ref false
+val debugRuntime: bool ref = ref false
+datatype debugFormat = Dwarf | DwarfPlus | Dwarf2 | Stabs | StabsPlus
+val debugFormat: debugFormat option ref = ref NONE
+val expert: bool ref = ref false
+val explicitAlign: Control.align option ref = ref NONE
+val explicitChunk: Control.chunk option ref = ref NONE
+datatype explicitCodegen = Native | Explicit of Control.codegen
+val explicitCodegen: explicitCodegen option ref = ref NONE
+val keepGenerated = ref false
+val keepO = ref false
+val output: string option ref = ref NONE
+val profileSet: bool ref = ref false
+val profileTimeSet: bool ref = ref false
+val runtimeArgs: string list ref = ref ["@MLton"]
+val show: Show.t option ref = ref NONE
+val stop = ref Place.OUT
+
+fun parseMlbPathVar (line: String.t) =
+   case String.tokens (line, Char.isSpace) of
+      [var, path] => SOME {var = var, path = path}
+    | _ => NONE
+
+fun readMlbPathMap (file: File.t) =
+   if not (File.canRead file) then
+      Error.bug (concat ["can't read MLB path map file: ", file])
+   else
+      List.keepAllMap
+      (File.lines file, fn line =>
+       if String.forall (line, Char.isSpace)
+          then NONE
+       else
+          case parseMlbPathVar line of
+             NONE => Error.bug (concat ["strange mlb path mapping: ",
+                                        file, ":: ", line])
+           | SOME v => SOME v)
+
+val targetMap: unit -> {arch: MLton.Platform.Arch.t,
+                        os: MLton.Platform.OS.t,
+                        target: string} list =
+   Promise.lazy
+   (fn () =>
+    let
+       val targetsDir =
+          OS.Path.mkAbsolute { path = "targets",
+                               relativeTo = !Control.libDir }
+       val potentialTargets = Dir.lsDirs targetsDir
+       fun targetMap target =
+          let
+             val targetDir =
+                OS.Path.mkAbsolute { path = target,
+                                     relativeTo = targetsDir }
+             val osFile =
+                OS.Path.joinDirFile { dir = targetDir,
+                                      file = "os" }
+             val archFile =
+                OS.Path.joinDirFile { dir = targetDir,
+                                      file = "arch" }
+             val os   = File.contents osFile
+             val arch = File.contents archFile
+             val os   = List.first (String.tokens (os,   Char.isSpace))
+             val arch = List.first (String.tokens (arch, Char.isSpace))
+             val os =
+                case MLton.Platform.OS.fromString os of
+                   NONE => Error.bug (concat ["strange os: ", os])
+                 | SOME os => os
+             val arch =
+                case MLton.Platform.Arch.fromString arch of
+                   NONE => Error.bug (concat ["strange arch: ", arch])
+                 | SOME a => a
+          in
+             SOME { arch = arch, os = os, target = target }
+          end
+          handle _ => NONE
+    in
+       List.keepAllMap (potentialTargets, targetMap)
+    end)
+
+fun setTargetType (target: string, usage): unit =
+   case List.peek (targetMap (), fn {target = t, ...} => target = t) of
+      NONE => usage (concat ["invalid target: ", target])
+    | SOME {arch, os, ...} =>
+         let
+            open Control
+         in
+            Target.arch := arch
+            ; Target.os := os
+         end
+
+fun hasCodegen (cg) =
+   let
+      datatype z = datatype Control.Target.arch
+      datatype z = datatype Control.Target.os
+      datatype z = datatype Control.Format.t
+      datatype z = datatype Control.codegen
+   in
+      case !Control.Target.arch of
+         AMD64 => (case cg of
+                      x86Codegen => false
+                    | _ => true)
+       | X86 => (case cg of
+                    amd64Codegen => false
+                  | x86Codegen =>
+                      (* Darwin PIC doesn't work *)
+                      !Control.Target.os <> Darwin orelse
+                      !Control.format = Executable orelse
+                      !Control.format = Archive
+                  | _ => true)
+       | _ => (case cg of
+                  amd64Codegen => false
+                | x86Codegen => false
+                | _ => true)
+   end
+fun hasNativeCodegen () =
+   let
+      datatype z = datatype Control.codegen
+   in
+      hasCodegen amd64Codegen
+      orelse hasCodegen x86Codegen
+   end
+
+
+fun defaultAlignIs8 () =
+   let
+      datatype z = datatype Control.Target.arch
+   in
+      case !Control.Target.arch of
+         Alpha => true
+       | AMD64 => true
+       | ARM => true
+       | HPPA => true
+       | IA64 => true
+       | MIPS => true
+       | Sparc => true
+       | S390 => true
+       | _ => false
+   end
+
+fun makeOptions {usage} =
+   let
+      val usage = fn s => (ignore (usage s); raise Fail "unreachable")
+      fun reportAnnotation (s, flag, e) =
+         case e of
+            Control.Elaborate.Bad =>
+               usage (concat ["invalid -", flag, " flag: ", s])
+          | Control.Elaborate.Deprecated ids =>
+               if !Control.warnDeprecated
+                  then
+                     Out.output
+                     (Out.error,
+                      concat ["Warning: ", "deprecated annotation: ", s, ", use ",
+                              List.toString Control.Elaborate.Id.name ids, ".\n"])
+               else ()
+          | Control.Elaborate.Good () => ()
+          | Control.Elaborate.Other =>
+               usage (concat ["invalid -", flag, " flag: ", s])
+      open Control Popt
+      datatype z = datatype MLton.Platform.Arch.t
+      datatype z = datatype MLton.Platform.OS.t
+      fun tokenizeOpt f opts =
+         List.foreach (String.tokens (opts, Char.isSpace),
+                       fn opt => f opt)
+      fun tokenizeTargetOpt f (target, opts) =
+         List.foreach (String.tokens (opts, Char.isSpace),
+                       fn opt => f (target, opt))
+   in
+      List.map
+      (
+       [
+       (Normal, "align", if defaultAlignIs8 () then " {8|4}" else " {4|8}",
+        "object alignment",
+        (SpaceString (fn s =>
+                      explicitAlign
+                      := SOME (case s of
+                                  "4" => Align4
+                                | "8" => Align8
+                                | _ => usage (concat ["invalid -align flag: ",
+                                                      s]))))),
+       (Expert, "ar-script", " <ar>", "path to a script producing archives",
+        SpaceString (fn s => arScript := s)),
+       (Normal, "as-opt", " <opt>", "pass option to assembler",
+        (SpaceString o tokenizeOpt)
+        (fn s => List.push (asOpts, {opt = s, pred = OptPred.Yes}))),
+       (Expert, "as-opt-quote", " <opt>", "pass (quoted) option to assembler",
+        SpaceString
+        (fn s => List.push (asOpts, {opt = s, pred = OptPred.Yes}))),
+       (Expert, "build-constants", " {false|true}",
+        "output C file that prints basis constants",
+        boolRef buildConstants),
+       (Expert, "cc", " <gcc>", "path to gcc executable",
+        SpaceString (fn s => gcc := s)),
+       (Normal, "cc-opt", " <opt>", "pass option to C compiler",
+        (SpaceString o tokenizeOpt)
+        (fn s => List.push (ccOpts, {opt = s, pred = OptPred.Yes}))),
+       (Expert, "cc-opt-quote", " <opt>", "pass (quoted) option to C compiler",
+        SpaceString
+        (fn s => List.push (ccOpts, {opt = s, pred = OptPred.Yes}))),
+       (Expert, "chunkify", " {coalesce<n>|func|one}", "set chunkify method",
+        SpaceString (fn s =>
+                     explicitChunk
+                     := SOME (case s of
+                                 "func" => ChunkPerFunc
+                               | "one" => OneChunk
+                               | _ => let
+                                         val usage = fn () =>
+                                            usage (concat ["invalid -chunkify flag: ", s])
+                                      in
+                                         if String.hasPrefix (s, {prefix = "coalesce"})
+                                            then let
+                                                    val s = String.dropPrefix (s, 8)
+                                                 in
+                                                    if String.forall (s, Char.isDigit)
+                                                       then (case Int.fromString s of
+                                                                NONE => usage ()
+                                                              | SOME n => Coalesce
+                                                                          {limit = n})
+                                                       else usage ()
+                                                 end
+                                            else usage ()
+                                      end))),
+       (Expert, "closure-convert-globalize", " {true|false}",
+        "whether to globalize during closure conversion",
+        Bool (fn b => (closureConvertGlobalize := b))),
+       (Expert, "closure-convert-shrink", " {true|false}",
+        "whether to shrink during closure conversion",
+        Bool (fn b => (closureConvertShrink := b))),
+       (Normal, "codegen",
+        concat [" {",
+                String.concatWith
+                (List.keepAllMap
+                 (Native :: (List.map (Control.Codegen.all, Explicit)),
+                  fn cg =>
+                  case cg of
+                     Native => if hasNativeCodegen () then SOME "native" else NONE
+                   | Explicit cg => if hasCodegen cg
+                                       then SOME (Control.Codegen.toString cg)
+                                    else NONE),
+                 "|"),
+                "}"],
+        "which code generator to use",
+        SpaceString (fn s =>
+                     explicitCodegen
+                     := SOME (if s = "native"
+                                 then Native
+                              else (case List.peek
+                                         (Control.Codegen.all, fn cg =>
+                                          s = Control.Codegen.toString cg) of
+                                       SOME cg => Explicit cg
+                                     | NONE => usage (concat ["invalid -codegen flag: ", s]))))),
+       (Normal, "const", " '<name> <value>'", "set compile-time constant",
+        SpaceString (fn s =>
+                     case String.tokens (s, Char.isSpace) of
+                        [name, value] =>
+                           Compile.setCommandLineConstant {name = name,
+                                                           value = value}
+                      | _ => usage (concat ["invalid -const flag: ", s]))),
+       (Expert, "contify-into-main", " {false|true}",
+        "contify functions into main",
+        boolRef contifyIntoMain),
+       (Expert, "debug", " {false|true}", "produce executable with debug info",
+        Bool (fn b => (debug := b
+                       ; debugRuntime := b))),
+       (Expert, "debug-runtime", " {false|true}", "produce executable with debug info",
+        boolRef debugRuntime),
+       (Expert, "debug-format", " {default|dwarf|dwarf+|drwaf2|stabs|stabs+}",
+        "choose debug symbol format",
+        SpaceString (fn s =>
+                        debugFormat :=
+                        (case s of
+                            "default" => NONE
+                          | "dwarf" => SOME Dwarf
+                          | "dwarf+" => SOME DwarfPlus
+                          | "dwarf2" => SOME Dwarf2
+                          | "stabs" => SOME Stabs
+                          | "stabs+" => SOME StabsPlus
+                          | _ => usage (concat ["invalid -debug-format flag: ", s])))),
+       let
+          val flag = "default-ann"
+       in
+          (Normal, flag, " <ann>", "set annotation default for mlb files",
+           SpaceString
+           (fn s => reportAnnotation (s, flag,
+                                      Control.Elaborate.processDefault s)))
+       end,
+       (Normal, "default-type", " '<ty><N>'", "set default type",
+        SpaceString
+        (fn s => (case s of
+                     "char8" => Control.defaultChar := s
+                   | "int8" => Control.defaultInt := s
+                   | "int16" => Control.defaultInt := s
+                   | "int32" => Control.defaultInt := s
+                   | "int64" => Control.defaultInt := s
+                   | "intinf" => Control.defaultInt := s
+                   | "real32" => Control.defaultReal := s
+                   | "real64" => Control.defaultReal := s
+                   | "widechar16" => Control.defaultWideChar := s
+                   | "widechar32" => Control.defaultWideChar := s
+                   | "word8" => Control.defaultWord := s
+                   | "word16" => Control.defaultWord := s
+                   | "word32" => Control.defaultWord := s
+                   | "word64" => Control.defaultWord := s
+                   | _ => usage (concat ["invalid -default-type flag: ", s])))),
+       (Expert, "diag-pass", " <pass>", "keep diagnostic info for pass",
+        SpaceString
+        (fn s =>
+         (case Regexp.fromString s of
+             SOME (re,_) => let val re = Regexp.compileDFA re
+                            in List.push (diagPasses, re)
+                            end
+           | NONE => usage (concat ["invalid -diag-pass flag: ", s])))),
+       let
+          val flag = "disable-ann"
+       in
+          (Normal, flag, " <ann>", "disable annotation in mlb files",
+           SpaceString
+           (fn s =>
+            reportAnnotation (s, flag,
+                              Control.Elaborate.processEnabled (s, false))))
+       end,
+       (Expert, "drop-pass", " <pass>", "omit optimization pass",
+        SpaceString
+        (fn s => (case Regexp.fromString s of
+                     SOME (re,_) => let val re = Regexp.compileDFA re
+                                    in List.push (dropPasses, re)
+                                    end
+                   | NONE => usage (concat ["invalid -drop-pass flag: ", s])))),
+       let
+          val flag = "enable-ann"
+       in
+          (Expert, flag, " <ann>", "globally enable annotation",
+           SpaceString
+           (fn s =>
+            reportAnnotation (s, flag,
+                              Control.Elaborate.processEnabled (s, true))))
+       end,
+       (Expert, "error-threshhold", " <n>", "error threshhold (20)",
+        intRef errorThreshhold),
+       (Expert, "emit-main", " {true|false}", "emit main() startup function",
+        boolRef emitMain),
+       (Expert, "expert", " {false|true}", "enable expert status",
+        boolRef expert),
+       (Normal, "export-header", " <file>", "write C header file for _export's",
+        SpaceString (fn s => exportHeader := SOME s)),
+       (Expert, "format",
+        concat [" {",
+                String.concatWith
+                (List.keepAllMap
+                  (Control.Format.all, fn cg => SOME (Control.Format.toString cg)),
+                 "|"),
+                "}"],
+        "generated output format",
+        SpaceString (fn s =>
+                     Control.format
+                     := (case List.peek
+                              (Control.Format.all, fn cg =>
+                               s = Control.Format.toString cg) of
+                            SOME cg => cg
+                          | NONE => usage (concat ["invalid -format flag: ", s])))),
+       (Expert, "gc-check", " {limit|first|every}", "force GCs",
+        SpaceString (fn s =>
+                     gcCheck :=
+                     (case s of
+                         "limit" => Limit
+                       | "first" => First
+                       | "every" => Every
+                       | _ => usage (concat ["invalid -gc-check flag: ", s])))),
+       (Normal, "ieee-fp", " {false|true}", "use strict IEEE floating-point",
+        boolRef Native.IEEEFP),
+       (Expert, "indentation", " <n>", "indentation level in ILs",
+        intRef indentation),
+       (Normal, "inline", " <n>", "set inlining threshold",
+        Int (fn i => inlineNonRec := {small = i,
+                                      product = #product (!inlineNonRec)})),
+       (Expert, "inline-into-main", " {true|false}",
+        "inline functions into main",
+        boolRef inlineIntoMain),
+       (Expert, "inline-leafa-loops", " {true|false}", "leaf inline loops",
+        Bool (fn loops =>
+              case !inlineLeafA of
+                 {repeat, size, ...} =>
+                    inlineLeafA :=
+                    {loops = loops, repeat = repeat, size = size})),
+       (Expert, "inline-leafa-repeat", " {true|false}", "leaf inline repeat",
+        Bool (fn repeat =>
+              case !inlineLeafA of
+                 {loops, size, ...} =>
+                    inlineLeafA :=
+                    {loops = loops, repeat = repeat, size = size})),
+       (Expert, "inline-leafa-size", " <n>", "set leaf inlining threshold (20)",
+        SpaceString (fn s =>
+                     case !inlineLeafA of
+                        {loops, repeat, ...} =>
+                           inlineLeafA :=
+                           {loops = loops, repeat = repeat,
+                            size = (if s = "inf"
+                                       then NONE
+                                    else if String.forall (s, Char.isDigit)
+                                       then Int.fromString s
+                                    else (usage o concat)
+                                         ["invalid -inline-leaf-size flag: ", s])})),
+       (Expert, "inline-leafb-loops", " {true|false}", "leaf inline loops",
+        Bool (fn loops =>
+              case !inlineLeafB of
+                 {repeat, size, ...} =>
+                    inlineLeafB :=
+                    {loops = loops, repeat = repeat, size = size})),
+       (Expert, "inline-leafb-repeat", " {true|false}", "leaf inline repeat",
+        Bool (fn repeat =>
+              case !inlineLeafB of
+                 {loops, size, ...} =>
+                    inlineLeafB :=
+                    {loops = loops, repeat = repeat, size = size})),
+       (Expert, "inline-leafb-size", " <n>", "set leaf inlining threshold (40)",
+        SpaceString (fn s =>
+                     case !inlineLeafB of
+                        {loops, repeat, ...} =>
+                           inlineLeafB :=
+                           {loops = loops, repeat = repeat,
+                            size = (if s = "inf"
+                                       then NONE
+                                    else if String.forall (s, Char.isDigit)
+                                       then Int.fromString s
+                                    else (usage o concat)
+                                         ["invalid -inline-leaf-size flag: ", s])})),
+       (Expert, "inline-nonrec-product", " <n>", "set inlining threshold (320)",
+        Int (fn product =>
+             case !inlineNonRec of
+                {small, ...} =>
+                   inlineNonRec := {small = small, product = product})),
+       (Expert, "inline-nonrec-small", " <n>", "set inlining threshold (60)",
+        Int (fn small =>
+             case !inlineNonRec of
+                {product, ...} =>
+                   inlineNonRec := {small = small, product = product})),
+       (Normal, "keep", " {g|o}", "save intermediate files",
+        SpaceString (fn s =>
+                     case s of
+                        "core-ml" => keepCoreML := true
+                      | "dot" => keepDot := true
+                      | "g" => keepGenerated := true
+                      | "machine" => keepMachine := true
+                      | "o" => keepO := true
+                      | "rssa" => keepRSSA := true
+                      | "ssa" => keepSSA := true
+                      | "ssa2" => keepSSA2 := true
+                      | "sxml" => keepSXML := true
+                      | "xml" => keepXML := true
+                      | _ => usage (concat ["invalid -keep flag: ", s]))),
+       (Expert, "keep-pass", " <pass>", "keep the results of pass",
+        SpaceString
+        (fn s => (case Regexp.fromString s of
+                     SOME (re,_) => let val re = Regexp.compileDFA re
+                                    in List.push (keepPasses, re)
+                                    end
+                   | NONE => usage (concat ["invalid -keep-pass flag: ", s])))),
+       (Expert, "libname", " <basename>", "the name of the generated library",
+        SpaceString (fn s => libname := s)),
+       (Normal, "link-opt", " <opt>", "pass option to linker",
+        (SpaceString o tokenizeOpt)
+        (fn s => List.push (linkOpts, {opt = s, pred = OptPred.Yes}))),
+       (Expert, "link-opt-quote", " <opt>", "pass (quoted) option to linker",
+        SpaceString
+        (fn s => List.push (linkOpts, {opt = s, pred = OptPred.Yes}))),
+       (Expert, "loop-passes", " <n>", "loop optimization passes (1)",
+        Int
+        (fn i =>
+         if i >= 1
+            then loopPasses := i
+            else usage (concat ["invalid -loop-passes arg: ", Int.toString i]))),
+       (Expert, "mark-cards", " {true|false}", "mutator marks cards",
+        boolRef markCards),
+       (Expert, "max-function-size", " <n>", "max function size (blocks)",
+        intRef maxFunctionSize),
+       (Normal, "mlb-path-map", " <file>", "additional MLB path map",
+        SpaceString (fn s => mlbPathVars := !mlbPathVars @ readMlbPathMap s)),
+       (Normal, "mlb-path-var", " '<name> <value>'", "additional MLB path var",
+        SpaceString
+        (fn s => mlbPathVars := !mlbPathVars @
+                                [case parseMlbPathVar s of
+                                    NONE => Error.bug ("strange mlb path var: " ^ s)
+                                  | SOME v => v])),
+       (Expert, "native-commented", " <n>", "level of comments  (0)",
+        intRef Native.commented),
+       (Expert, "native-copy-prop", " {true|false}",
+        "use copy propagation",
+        boolRef Native.copyProp),
+       (Expert, "native-cutoff", " <n>",
+        "live transfer cutoff distance",
+        intRef Native.cutoff),
+       (Expert, "native-live-transfer", " {0,...,8}",
+        "use live transfer",
+        intRef Native.liveTransfer),
+       (Expert, "native-live-stack", " {false|true}",
+        "track liveness of stack slots",
+        boolRef Native.liveStack),
+       (Expert, "native-move-hoist", " {true|false}",
+        "use move hoisting",
+        boolRef Native.moveHoist),
+       (Expert, "native-optimize", " <n>", "level of optimizations",
+        intRef Native.optimize),
+       (Expert, "native-split", " <n>", "split assembly files at ~n lines",
+        Int (fn i => Native.split := SOME i)),
+       (Expert, "native-shuffle", " {true|false}",
+        "shuffle registers at C-calls",
+        Bool (fn b => Native.shuffle := b)),
+       (Expert, "opt-passes", " {default|minimal}", "level of optimizations",
+        SpaceString (fn s =>
+                     let
+                        fun err s =
+                           usage (concat ["invalid -opt-passes flag: ", s])
+                     in
+                        List.foreach
+                        (!optimizationPasses, fn {il,set,...} =>
+                         case set s of
+                            Result.Yes () => ()
+                          | Result.No s' => err (concat [s', "(for ", il, ")"]))
+                     end)),
+       (Normal, "output", " <file>", "name of output file",
+        SpaceString (fn s => output := SOME s)),
+       (Expert, "polyvariance", " {true|false}", "use polyvariance",
+        Bool (fn b => if b then () else polyvariance := NONE)),
+       (Expert, "polyvariance-hofo", " {true|false}", "duplicate higher-order fns only",
+        Bool (fn hofo =>
+              case !polyvariance of
+                 SOME {product, rounds, small, ...} =>
+                    polyvariance := SOME {hofo = hofo,
+                                          product = product,
+                                          rounds = rounds,
+                                          small = small}
+               | _ => ())),
+       (Expert, "polyvariance-product", " <n>", "set polyvariance threshold (300)",
+        Int (fn product =>
+             case !polyvariance of
+                SOME {hofo, rounds, small, ...} =>
+                   polyvariance := SOME {hofo = hofo,
+                                         product = product,
+                                         rounds = rounds,
+                                         small = small}
+              | _ => ())),
+       (Expert, "polyvariance-rounds", " <n>", "set polyvariance rounds (2)",
+        Int (fn rounds =>
+             case !polyvariance of
+                SOME {hofo, product, small, ...} =>
+                   polyvariance := SOME {hofo = hofo,
+                                         product = product,
+                                         rounds = rounds,
+                                         small = small}
+              | _ => ())),
+       (Expert, "polyvariance-small", " <n>", "set polyvariance threshold (30)",
+        Int (fn small =>
+             case !polyvariance of
+                SOME {hofo, product, rounds, ...} =>
+                   polyvariance := SOME {hofo = hofo,
+                                         product = product,
+                                         rounds = rounds,
+                                         small = small}
+              | _ => ())),
+       (Expert, "prefer-abs-paths", " {false|true}",
+        "prefer absolute paths when referring to files",
+        boolRef preferAbsPaths),
+       (Expert, "prof-pass", " <pass>", "keep profile info for pass",
+        SpaceString (fn s =>
+                     (case Regexp.fromString s of
+                         SOME (re,_) => let val re = Regexp.compileDFA re
+                                        in
+                                           List.push (profPasses, re)
+                                        end
+                       | NONE => usage (concat ["invalid -diag-pass flag: ", s])))),
+       (Normal, "profile", " {no|alloc|count|time}",
+        "produce executable suitable for profiling",
+        SpaceString
+        (fn s =>
+         if !profileSet
+            then usage "can't have multiple -profile switches"
+         else
+            (profileSet := true
+             ; profile := (case s of
+                              "no" => ProfileNone
+                            | "alloc" => ProfileAlloc
+                            | "call" => ProfileCallStack
+                            | "count" => ProfileCount
+                            | "drop" => ProfileDrop
+                            | "label" => ProfileLabel
+                            | "time" => (profileTimeSet := true
+                                         ; ProfileTimeLabel)
+                            | "time-field" => ProfileTimeField
+                            | "time-label" => ProfileTimeLabel
+                            | _ => usage (concat
+                                          ["invalid -profile arg: ", s]))))),
+       (Normal, "profile-branch", " {false|true}",
+        "profile branches in addition to functions",
+        boolRef profileBranch),
+       (Expert, "profile-c", " <regexp>",
+        "include C-calls in files matching <regexp> in profile",
+        SpaceString
+        (fn s =>
+         (case Regexp.fromString s of
+             SOME (re,_) => let
+                               open Regexp
+                               val re = seq [anys, re, anys]
+                               val re = compileDFA re
+                            in List.push (profileC, re)
+                            end
+           | NONE => usage (concat ["invalid -profile-c flag: ", s])))),
+       (Expert, "profile-exclude", " <regexp>",
+        "exclude files matching <regexp> from profile",
+        SpaceString
+        (fn s =>
+         (case Regexp.fromString s of
+             SOME (re,_) => let
+                               open Regexp
+                               val re = seq [anys, re, anys]
+                               val re = compileDFA re
+                            in List.push (profileInclExcl, (re, false))
+                            end
+           | NONE => usage (concat ["invalid -profile-exclude flag: ", s])))),
+       (Expert, "profile-il", " {source}", "where to insert profile exps",
+        SpaceString
+        (fn s =>
+         case s of
+            "source" => profileIL := ProfileSource
+          | "ssa" => profileIL := ProfileSSA
+          | "ssa2" => profileIL := ProfileSSA2
+          | _ => usage (concat ["invalid -profile-il arg: ", s]))),
+       (Expert, "profile-include", " <regexp>",
+        "include files matching <regexp> from profile",
+        SpaceString
+        (fn s =>
+         (case Regexp.fromString s of
+             SOME (re,_) => let
+                               open Regexp
+                               val re = seq [anys, re, anys]
+                               val re = compileDFA re
+                            in List.push (profileInclExcl, (re, true))
+                            end
+           | NONE => usage (concat ["invalid -profile-include flag: ", s])))),
+       (Expert, "profile-raise", " {false|true}",
+        "profile raises in addition to functions",
+        boolRef profileRaise),
+       (Normal, "profile-stack", " {false|true}", "profile the stack",
+        boolRef profileStack),
+       (Normal, "profile-val", " {false|true}",
+        "profile val bindings in addition to functions",
+        boolRef profileVal),
+       (Normal, "runtime", " <arg>", "pass arg to runtime via @MLton",
+        SpaceString (fn s => List.push (runtimeArgs, s))),
+       (Expert, "show", " {anns|path-map}", "print specified data and stop",
+        SpaceString
+        (fn s =>
+         show := SOME (case s of
+                          "anns" => Show.Anns
+                        | "path-map" => Show.PathMap
+                        | _ => usage (concat ["invalid -show arg: ", s])))),
+       (Normal, "show-basis", " <file>", "write out the final basis environment",
+        SpaceString (fn s => showBasis := SOME s)),
+       (Normal, "show-def-use", " <file>", "write def-use information",
+        SpaceString (fn s => showDefUse := SOME s)),
+       (Expert, "show-types", " {true|false}", "show types in ILs",
+        boolRef showTypes),
+       (Expert, "ssa-passes", " <passes>", "ssa optimization passes",
+        SpaceString
+        (fn s =>
+         case List.peek (!Control.optimizationPasses,
+                         fn {il, ...} => String.equals ("ssa", il)) of
+            SOME {set, ...} =>
+               (case set s of
+                   Result.Yes () => ()
+                 | Result.No s' => usage (concat ["invalid -ssa-passes arg: ", s']))
+          | NONE => Error.bug "ssa optimization passes missing")),
+       (Expert, "ssa2-passes", " <passes>", "ssa2 optimization passes",
+        SpaceString
+        (fn s =>
+         case List.peek (!Control.optimizationPasses,
+                         fn {il, ...} => String.equals ("ssa2", il)) of
+            SOME {set, ...} =>
+               (case set s of
+                   Result.Yes () => ()
+                 | Result.No s' => usage (concat ["invalid -ssa2-passes arg: ", s']))
+          | NONE => Error.bug "ssa2 optimization passes missing")),
+       (Normal, "stop", " {f|g|o|tc}", "when to stop",
+        SpaceString
+        (fn s =>
+         stop := (case s of
+                     "f" => Place.Files
+                   | "g" => Place.Generated
+                   | "o" => Place.O
+                   | "tc" => Place.TypeCheck
+                   | _ => usage (concat ["invalid -stop arg: ", s])))),
+       (Expert, "sxml-passes", " <passes>", "sxml optimization passes",
+        SpaceString
+        (fn s =>
+         case List.peek (!Control.optimizationPasses,
+                         fn {il, ...} => String.equals ("sxml", il)) of
+            SOME {set, ...} =>
+               (case set s of
+                   Result.Yes () => ()
+                 | Result.No s' => usage (concat ["invalid -sxml-passes arg: ", s']))
+          | NONE => Error.bug "sxml optimization passes missing")),
+       (Normal, "target",
+        concat [" {",
+                (case targetMap () of
+                    [] => ""
+                  | [x] => #target x
+                  | x :: _ => concat [#target x, "|..."]),
+                "}"],
+        "platform that executable will run on",
+        SpaceString
+        (fn t =>
+         (target := (if t = "self" then Self else Cross t);
+          setTargetType (t, usage)))),
+       (Normal, "target-as-opt", " <target> <opt>", "target-dependent assembler option",
+        (SpaceString2 o tokenizeTargetOpt)
+        (fn (target, opt) =>
+         List.push (asOpts, {opt = opt, pred = OptPred.Target target}))),
+       (Expert, "target-as-opt-quote", " <target> <opt>", "target-dependent assembler option (quoted)",
+        (SpaceString2
+         (fn (target, opt) =>
+          List.push (asOpts, {opt = opt, pred = OptPred.Target target})))),
+       (Normal, "target-cc-opt", " <target> <opt>", "target-dependent C compiler option",
+        (SpaceString2 o tokenizeTargetOpt)
+        (fn (target, opt) =>
+         List.push (ccOpts, {opt = opt, pred = OptPred.Target target}))),
+       (Expert, "target-cc-opt-quote", " <target> <opt>", "target-dependent C compiler option (quoted)",
+        (SpaceString2
+         (fn (target, opt) =>
+          List.push (ccOpts, {opt = opt, pred = OptPred.Target target})))),
+       (Normal, "target-link-opt", " <target> <opt>", "target-dependent linker option",
+        (SpaceString2 o tokenizeTargetOpt)
+        (fn (target, opt) =>
+         List.push (linkOpts, {opt = opt, pred = OptPred.Target target}))),
+       (Expert, "target-link-opt-quote", " <target> <opt>", "target-dependent linker option (quoted)",
+        (SpaceString2
+         (fn (target, opt) =>
+          List.push (linkOpts, {opt = opt, pred = OptPred.Target target})))),
+       (Expert, #1 trace, " name1,...", "trace compiler internals", #2 trace),
+       (Expert, "type-check", " {false|true}", "type check ILs",
+        boolRef typeCheck),
+       (Normal, "verbose", " {0|1|2|3}", "how verbose to be",
+        SpaceString
+        (fn s =>
+         verbosity := (case s of
+                          "0" => Silent
+                        | "1" => Top
+                        | "2" => Pass
+                        | "3" => Detail
+                        | _ => usage (concat ["invalid -verbose arg: ", s])))),
+       (Expert, "warn-ann", " {true|false}",
+        "unrecognized annotation warnings",
+        boolRef warnAnn),
+       (Expert, "warn-deprecated", " {true|false}",
+        "deprecated feature warnings",
+        boolRef warnDeprecated),
+       (Expert, "xml-passes", " <passes>", "xml optimization passes",
+        SpaceString
+        (fn s =>
+         case List.peek (!Control.optimizationPasses,
+                         fn {il, ...} => String.equals ("xml", il)) of
+            SOME {set, ...} =>
+               (case set s of
+                   Result.Yes () => ()
+                 | Result.No s' => usage (concat ["invalid -xml-passes arg: ", s']))
+          | NONE => Error.bug "xml optimization passes missing")),
+       (Expert, "zone-cut-depth", " <n>", "zone cut depth",
+        intRef zoneCutDepth)
+       ],
+       fn (style, name, arg, desc, opt) =>
+       {arg = arg, desc = desc, name = name, opt = opt, style = style})
+   end
+
+val mainUsage =
+   "mlton [option ...] file.{c|mlb|o|sml} [file.{c|o|s|S} ...]"
+
+val {parse, usage} =
+   Popt.makeUsage {mainUsage = mainUsage,
+                   makeOptions = makeOptions,
+                   showExpert = fn () => !expert}
+
+val usage = fn s => (usage s; raise Fail "unreachable")
+
+fun commandLine (args: string list): unit =
+   let
+      open Control
+      datatype z = datatype MLton.Platform.Arch.t
+      datatype z = datatype MLton.Platform.OS.t
+      val args =
+         case args of
+            lib :: args =>
+               (libDir := OS.Path.mkCanonical lib
+                ; args)
+          | _ => Error.bug "incorrect args from shell script"
+      val () = setTargetType ("self", usage)
+      val result = parse args
+
+      val target = !target
+      val targetStr =
+         case target of
+            Cross s => s
+          | Self => "self"
+      val targetsDir =
+         OS.Path.mkAbsolute { path = "targets",
+                              relativeTo = !libDir }
+      val targetDir =
+         OS.Path.mkAbsolute { path = targetStr,
+                              relativeTo = targetsDir }
+      val () = libTargetDir := targetDir
+      val targetArch = !Target.arch
+      val archStr = String.toLower (MLton.Platform.Arch.toString targetArch)
+      val targetOS = !Target.os
+      val OSStr = String.toLower (MLton.Platform.OS.toString targetOS)
+
+      (* Determine whether code should be PIC (position independent) or not.
+       * This decision depends on the platform and output format.
+       *)
+      val positionIndependent =
+         case (targetOS, targetArch, !format) of
+            (* Windows is never position independent *)
+            (MinGW, _, _) => false
+          | (Cygwin, _, _) => false
+            (* Technically, Darwin should always be PIC.
+             * However, PIC on i386/darwin is unimplemented so we avoid it.
+             * PowerPC PIC is bad too, but the C codegen will use PIC behind
+             * our back unless forced, so let's just admit that it's PIC.
+             *)
+          | (Darwin, X86, Executable) => false
+          | (Darwin, X86, Archive) => false
+          | (Darwin, _, _) => true
+            (* On ELF systems, we only need PIC for LibArchive/Library *)
+          | (_, _, Library) => true
+          | (_, _, LibArchive) => true
+          | _ => false
+      val () = Control.positionIndependent := positionIndependent
+
+      val stop = !stop
+
+      val () =
+         align := (case !explicitAlign of
+                      NONE => if defaultAlignIs8 () then Align8 else Align4
+                    | SOME a => a)
+      val () =
+         codegen := (case !explicitCodegen of
+                        NONE =>
+                           if hasCodegen (x86Codegen)
+                              then x86Codegen
+                           else if hasCodegen (amd64Codegen)
+                               then amd64Codegen
+                           else CCodegen
+                      | SOME Native =>
+                           if hasCodegen (x86Codegen)
+                              then x86Codegen
+                           else if hasCodegen (amd64Codegen)
+                              then amd64Codegen
+                           else usage (concat ["can't use native codegen on ",
+                                               MLton.Platform.Arch.toString targetArch,
+                                               " target"])
+                      | SOME (Explicit cg) => cg)
+      val () = MLton.Rusage.measureGC (!verbosity <> Silent)
+      val () = if !profileTimeSet
+                  then (case !codegen of
+                           x86Codegen => profile := ProfileTimeLabel
+                         | amd64Codegen => profile := ProfileTimeLabel
+                         | _ => profile := ProfileTimeField)
+                  else ()
+      val () = if !exnHistory
+                  then (case !profile of
+                           ProfileNone => profile := ProfileCallStack
+                         | ProfileCallStack => ()
+                         | _ => usage "can't use -profile with Exn.keepHistory"
+                        ; profileRaise := true)
+               else ()
+
+      val () =
+         Compile.setCommandLineConstant
+         {name = "CallStack.keep",
+          value = Bool.toString (!Control.profile = Control.ProfileCallStack)}
+
+      val () =
+         let
+            val sizeMap =
+               List.map
+               (File.lines (OS.Path.joinDirFile {dir = !Control.libTargetDir,
+                                                 file = "sizes"}),
+                fn line =>
+                case String.tokens (line, Char.isSpace) of
+                   [ty, "=", size] =>
+                      (case Int.fromString size of
+                          NONE => Error.bug (concat ["strange size: ", size])
+                        | SOME size =>
+                             (ty, Bytes.toBits (Bytes.fromInt size)))
+                 | _ => Error.bug (concat ["strange size mapping: ", line]))
+            fun lookup ty' =
+               case List.peek (sizeMap, fn (ty, _) => String.equals (ty, ty')) of
+                  NONE => Error.bug (concat ["missing size mapping: ", ty'])
+                | SOME (_, size) => size
+         in
+            Control.Target.setSizes
+            {cint = lookup "cint",
+             cpointer = lookup "cpointer",
+             cptrdiff = lookup "cptrdiff",
+             csize = lookup "csize",
+             header = lookup "header",
+             mplimb = lookup "mplimb",
+             objptr = lookup "objptr",
+             seqIndex = lookup "seqIndex"}
+         end
+
+      fun tokenize l =
+         String.tokens (concat (List.separate (l, " ")), Char.isSpace)
+
+      (* When cross-compiling, use the named cross compiler.
+       * Older gcc versions used -b for multiple targets.
+       * If this is still needed, a shell script wrapper can hide this.
+       *)
+      val gcc =
+         case target of
+            Cross s =>
+               let
+                  val {dir = gccDir, file = gccFile} =
+                     OS.Path.splitDirFile (!gcc)
+               in
+                  OS.Path.joinDirFile
+                  {dir = gccDir,
+                   file = s ^ "-" ^ gccFile}
+               end
+          | Self => !gcc
+      val arScript = !arScript
+
+      fun addTargetOpts opts =
+         List.fold
+         (!opts, [], fn ({opt, pred}, ac) =>
+          if (case pred of
+                 OptPred.Target s =>
+                    let
+                       val s = String.toLower s
+                    in
+                       s = archStr orelse s = OSStr
+                    end
+               | OptPred.Yes => true)
+             then opt :: ac
+          else ac)
+      val asOpts = addTargetOpts asOpts
+      val ccOpts = addTargetOpts ccOpts
+      val ccOpts = concat ["-I",
+                           OS.Path.mkAbsolute { path = "include",
+                                                relativeTo = !libTargetDir }]
+                   :: ccOpts
+      val linkOpts =
+         List.concat [[concat ["-L", !libTargetDir]],
+                      if !debugRuntime then
+                      ["-lmlton-gdb", "-lgdtoa-gdb"]
+                      else if positionIndependent then
+                      ["-lmlton-pic", "-lgdtoa-pic"]
+                      else
+                      ["-lmlton", "-lgdtoa"],
+                      addTargetOpts linkOpts]
+      val linkArchives =
+         if !debugRuntime then
+         [OS.Path.joinDirFile { dir = !libTargetDir, file = "libmlton-gdb.a" },
+          OS.Path.joinDirFile { dir = !libTargetDir, file = "libgdtoa-gdb.a" }]
+         else if positionIndependent then
+         [OS.Path.joinDirFile { dir = !libTargetDir, file = "libmlton-pic.a" },
+          OS.Path.joinDirFile { dir = !libTargetDir, file = "libgdtoa-pic.a" }]
+         else
+         [OS.Path.joinDirFile { dir = !libTargetDir, file =  "libmlton.a" },
+          OS.Path.joinDirFile { dir = !libTargetDir, file =  "libgdtoa.a" }]
+      val _ =
+         if not (hasCodegen (!codegen))
+            then usage (concat ["can't use ",
+                                Control.Codegen.toString (!codegen),
+                                " codegen on ",
+                                MLton.Platform.Arch.toString targetArch,
+                                " target"])
+         else ()
+      val () =
+         Control.labelsHaveExtra_ := (case targetOS of
+                                         Cygwin => true
+                                       | Darwin => true
+                                       | MinGW => true
+                                       | _ => false)
+      val _ =
+         chunk :=
+         (case !explicitChunk of
+             NONE => (case !codegen of
+                         amd64Codegen => ChunkPerFunc
+                       | CCodegen => Coalesce {limit = 4096}
+                       | x86Codegen => ChunkPerFunc
+                       )
+           | SOME c => c)
+      val _ = if not (!Control.codegen = x86Codegen) andalso !Native.IEEEFP
+                 then usage "must use x86 codegen with -ieee-fp true"
+              else ()
+      val _ =
+         if !keepDot andalso List.isEmpty (!keepPasses)
+            then keepSSA := true
+         else ()
+      val () =
+         keepDefUse
+         := (isSome (!showDefUse)
+             orelse (Control.Elaborate.enabled Control.Elaborate.warnUnused)
+             orelse (Control.Elaborate.default Control.Elaborate.warnUnused))
+      val warnMatch =
+          (Control.Elaborate.enabled Control.Elaborate.nonexhaustiveMatch)
+          orelse (Control.Elaborate.enabled Control.Elaborate.redundantMatch)
+          orelse (Control.Elaborate.default Control.Elaborate.nonexhaustiveMatch <>
+                  Control.Elaborate.DiagEIW.Ignore)
+          orelse (Control.Elaborate.default Control.Elaborate.redundantMatch <>
+                  Control.Elaborate.DiagEIW.Ignore)
+      val _ = elaborateOnly := (stop = Place.TypeCheck
+                                andalso not (warnMatch)
+                                andalso not (!keepDefUse))
+      val _ =
+         case targetOS of
+            Darwin => ()
+          | FreeBSD => ()
+          | HPUX => ()
+          | Linux => ()
+          | MinGW => ()
+          | NetBSD => ()
+          | OpenBSD => ()
+          | Solaris => ()
+          | _ =>
+               if !profile = ProfileTimeField
+                  orelse !profile = ProfileTimeLabel
+                  then usage (concat ["can't use -profile time on ",
+                                      MLton.Platform.OS.toString targetOS])
+               else ()
+      fun printVersion (out: Out.t): unit =
+         Out.output (out, concat [Version.banner, "\n"])
+      val () =
+         case !show of
+            NONE => ()
+          | SOME info =>
+            (case info of
+                Show.Anns =>
+                Layout.outputl (Control.Elaborate.document {expert = !expert},
+                                Out.standard)
+              | Show.PathMap =>
+                let
+                   open Layout
+                in
+                   outputl (align
+                            (List.map (Control.mlbPathMap (),
+                                       fn {var, path, ...} =>
+                                       str (concat [var, " ", path]))),
+                            Out.standard)
+                end
+             ; let open OS.Process in exit success end)
+   in
+      case result of
+      Result.No msg => usage msg
+    | Result.Yes [] =>
+         (inputFile := "<none>"
+          ; if isSome (!showBasis)
+               then (trace (Top, "Type Check SML")
+                     Compile.elaborateSML {input = []})
+            else if !buildConstants
+               then Compile.outputBasisConstants Out.standard
+            else if !verbosity = Silent orelse !verbosity = Top
+               then printVersion Out.standard
+            else outputHeader' (No, Out.standard))
+    | Result.Yes (input :: rest) =>
+         let
+            val _ = inputFile := File.base (File.fileOf input)
+            val (start, base) =
+               let
+                  val rec loop =
+                     fn [] => usage (concat ["invalid file suffix on ", input])
+                      | (suf, start, hasNum) :: sufs =>
+                           if String.hasSuffix (input, {suffix = suf})
+                              then (start,
+                                    let
+                                       val f = File.base input
+                                    in
+                                       if hasNum
+                                          then File.base f
+                                       else f
+                                    end)
+                           else loop sufs
+                  datatype z = datatype Place.t
+               in
+                  loop [(".mlb", MLB, false),
+                        (".sml", SML, false),
+                        (".c", Generated, true),
+                        (".o", O, true)]
+               end
+            val _ =
+               List.foreach
+               (rest, fn f =>
+                if List.exists ([".c", ".o", ".s", ".S"], fn suffix =>
+                                String.hasSuffix (f, {suffix = suffix}))
+                   then File.withIn (f, fn _ => ())
+                else usage (concat ["invalid file suffix: ", f]))
+            val csoFiles = rest
+         in
+            case Place.compare (start, stop) of
+               GREATER => usage (concat ["cannot go from ", Place.toString start,
+                                         " to ", Place.toString stop])
+             | EQUAL => usage "nothing to do"
+             | LESS =>
+                  let
+                     val _ =
+                        if !verbosity = Top
+                           then printVersion Out.error
+                        else ()
+                     val tempFiles: File.t list ref = ref []
+                     val tmpDir =
+                        let
+                           val (tmpVar, default) =
+                              case MLton.Platform.OS.host of
+                                 MinGW => ("TEMP", "C:/WINDOWS/TEMP")
+                               | _ => ("TMPDIR", "/tmp")
+                        in
+                           case Process.getEnv tmpVar of
+                              NONE => default
+                            | SOME d => d
+                        end
+                     fun temp (suf: string): File.t =
+                        let
+                           val (f, out) =
+                              File.temp {prefix = OS.Path.concat (tmpDir, "file"),
+                                         suffix = suf}
+                           val _ = Out.close out
+                           val _ = List.push (tempFiles, f)
+                        in
+                           f
+                        end
+                     fun suffix s = concat [base, s]
+                     fun maybeOut suf =
+                        case !output of
+                           NONE => suffix suf
+                         | SOME f => f
+                     fun maybeOutBase suf =
+                        case !output of
+                           NONE => suffix suf
+                         | SOME f => if File.extension f = SOME "exe"
+                                        then concat [File.base f, suf]
+                                     else concat [f, suf]
+                     val { base = outputBase, ext=_ } =
+                        OS.Path.splitBaseExt (maybeOut ".ext")
+                     val { file = defLibname, dir=_ } =
+                        OS.Path.splitDirFile outputBase
+                     val defLibname =
+                        if String.hasPrefix (defLibname, {prefix = "lib"})
+                        then String.extract (defLibname, 3, NONE)
+                        else defLibname
+                     fun toAlNum c = if Char.isAlphaNum c then c else #"_"
+                     val () =
+                        if !libname <> "" then () else
+                        libname := CharVector.map toAlNum defLibname
+                     (* Library output includes a header by default *)
+                     val () =
+                        case (!format, !exportHeader) of
+                           (Executable, _) => ()
+                         | (_, NONE) => exportHeader := SOME (!libname ^ ".h")
+                         | _ => ()
+                     val _ =
+                        atMLtons :=
+                        Vector.fromList
+                        (maybeOut "" :: tokenize (rev ("--" :: (!runtimeArgs))))
+                     (* The -Wa,--gstabs says to pass the --gstabs option to the
+                      * assembler. This tells the assembler to generate stabs
+                      * debugging information for each assembler line.
+                      *)
+                     val (gccDebug, asDebug) =
+                        case !debugFormat of
+                           NONE => (["-g"], "-Wa,-g")
+                         | SOME Dwarf => (["-gdwarf", "-g2"], "-Wa,--gdwarf2")
+                         | SOME DwarfPlus => (["-gdwarf+", "-g2"], "-Wa,--gdwarf2")
+                         | SOME Dwarf2 => (["-gdwarf-2", "-g2"], "-Wa,--gdwarf2")
+                         | SOME Stabs => (["-gstabs", "-g2"], "-Wa,--gstabs")
+                         | SOME StabsPlus => (["-gstabs+", "-g2"], "-Wa,--gstabs")
+                     fun compileO (inputs: File.t list): unit =
+                        let
+                           val output =
+                              case (!format, targetOS) of
+                                 (Archive, _) => maybeOut ".a"
+                               | (Executable, _) => maybeOut ""
+                               | (LibArchive, _) => maybeOut ".a"
+                               | (Library, Darwin) => maybeOut ".dylib"
+                               | (Library, Cygwin) => !libname ^ ".dll"
+                               | (Library, MinGW)  => !libname ^ ".dll"
+                               | (Library, _) => maybeOut ".so"
+                           val libOpts =
+                              case targetOS of
+                                 Darwin => [ "-dynamiclib" ]
+                               | Cygwin =>  [ "-shared",
+                                              "-Wl,--out-implib," ^
+                                                 maybeOut ".a",
+                                              "-Wl,--output-def," ^
+                                                 !libname ^ ".def"]
+                               | MinGW =>  [ "-shared",
+                                             "-Wl,--out-implib," ^
+                                                maybeOut ".a",
+                                             "-Wl,--output-def," ^
+                                                !libname ^ ".def"]
+                               | _ =>      [ "-shared" ]
+                           val _ =
+                              trace (Top, "Link")
+                              (fn () =>
+                               if !format = Archive orelse
+                                  !format = LibArchive
+                               then System.system
+                                    (arScript,
+                                     List.concat
+                                      [[targetStr, OSStr, output],
+                                       inputs,
+                                       linkArchives])
+                               else System.system
+                                    (gcc,
+                                     List.concat
+                                      [["-o", output],
+                                       if !format = Library then libOpts else [],
+                                       if !debug then gccDebug else [],
+                                       inputs,
+                                       linkOpts]))
+                              ()
+                           (* gcc on Cygwin appends .exe, which I don't want, so
+                            * move the output file to it's rightful place.
+                            * Notice that we do not use targetOS here, since we
+                            * care about the platform we're running on, not the
+                            * platform we're generating for.
+                            *
+                            * We want to keep the .exe as is for MinGW/Win32.
+                            *)
+                           val _ =
+                              if MLton.Platform.OS.host = Cygwin
+                                 then
+                                    if String.contains (output, #".")
+                                       then ()
+                                    else
+                                       File.move {from = concat [output, ".exe"],
+                                                  to = output}
+                              else ()
+                        in
+                           ()
+                        end
+                  fun mkOutputO (c: Counter.t, input: File.t): File.t =
+                     if stop = Place.O orelse !keepO
+                        then
+                           if File.dirOf input = File.dirOf (maybeOutBase ".o")
+                              then
+                                 concat [File.base input, ".o"]
+                              else
+                                 maybeOutBase
+                                    (concat [".",
+                                             Int.toString (Counter.next c),
+                                             ".o"])
+                        else temp ".o"
+                  fun compileC (c: Counter.t, input: File.t): File.t =
+                     let
+                        val debugSwitches = gccDebug @ ["-DASSERT=1"]
+                        val output = mkOutputO (c, input)
+
+                        val _ =
+                           System.system
+                            (gcc,
+                             List.concat
+                             [[ "-std=gnu99", "-c" ],
+                              if !format = Executable
+                              then [] else [ "-DLIBNAME=" ^ !libname ],
+                              if positionIndependent
+                              then [ "-fPIC", "-DPIC" ] else [],
+                              if !debug then debugSwitches else [],
+                              ccOpts,
+                              ["-o", output],
+                              [input]])
+                     in
+                        output
+                     end
+                  fun compileS (c: Counter.t, input: File.t): File.t =
+                     let
+                        val output = mkOutputO (c, input)
+                        val _ =
+                           System.system
+                           (gcc,
+                            List.concat
+                            [["-c"],
+                             if !debug then [asDebug] else [],
+                             asOpts,
+                             ["-o", output],
+                             [input]])
+                     in
+                        output
+                     end
+                  fun compileCSO (inputs: File.t list): unit =
+                     if List.forall (inputs, fn f =>
+                                     SOME "o" = File.extension f)
+                        then compileO inputs
+                     else
+                     let
+                        val c = Counter.new 0
+                        val oFiles =
+                           trace (Top, "Compile and Assemble")
+                           (fn () =>
+                            List.fold
+                            (inputs, [], fn (input, ac) =>
+                             let
+                                val extension = File.extension input
+                             in
+                                if SOME "o" = extension
+                                   then input :: ac
+                                else if SOME "c" = extension
+                                   then (compileC (c, input)) :: ac
+                                else if SOME "s" = extension
+                                        orelse SOME "S" = extension
+                                   then (compileS (c, input)) :: ac
+                                else Error.bug
+                                     (concat
+                                      ["invalid extension: ",
+                                       Option.toString (fn s => s) extension])
+                             end))
+                           ()
+                     in
+                        case stop of
+                           Place.O => ()
+                         | _ => compileO (rev oFiles)
+                     end
+                  fun mkCompileSrc {listFiles, elaborate, compile} input =
+                     let
+                        val outputs: File.t list ref = ref []
+                        val r = ref 0
+                        fun make (style: style, suf: string) () =
+                           let
+                              val suf = concat [".", Int.toString (!r), suf]
+                              val _ = Int.inc r
+                              val file = (if !keepGenerated
+                                             orelse stop = Place.Generated
+                                             then maybeOutBase
+                                          else temp) suf
+                              val _ = List.push (outputs, file)
+                              val out = Out.openOut file
+                              fun print s = Out.output (out, s)
+                              val _ = outputHeader' (style, out)
+                              fun done () = Out.close out
+                           in
+                              {file = file,
+                               print = print,
+                               done = done}
+                           end
+                        val _ =
+                           case !verbosity of
+                              Silent => ()
+                            | Top => ()
+                            | _ =>
+                                 outputHeader
+                                 (Control.No, fn l =>
+                                  let val out = Out.error
+                                  in Layout.output (l, out)
+                                     ; Out.newline out
+                                  end)
+                        val _ =
+                           case stop of
+                              Place.Files =>
+                                 Vector.foreach
+                                 (listFiles {input = input}, fn f =>
+                                  (print (String.translate
+                                          (f, fn #"\\" => "/" | c => str c))
+                                   ; print "\n"))
+                            | Place.TypeCheck =>
+                                 trace (Top, "Type Check SML")
+                                 elaborate
+                                 {input = input}
+                            | _ =>
+                                 trace (Top, "Compile SML")
+                                 compile
+                                 {input = input,
+                                  outputC = make (Control.C, ".c"),
+                                  outputS = make (Control.Assembly, ".s")}
+                     in
+                        case stop of
+                           Place.Files => ()
+                         | Place.TypeCheck => ()
+                         | Place.Generated => ()
+                         | _ =>
+                              (* Shrink the heap before calling gcc. *)
+                              (MLton.GC.pack ()
+                               ; compileCSO (List.concat [!outputs, csoFiles]))
+                     end
+                  val compileSML =
+                     mkCompileSrc {listFiles = fn {input} => Vector.fromList input,
+                                   elaborate = Compile.elaborateSML,
+                                   compile = Compile.compileSML}
+                  val compileMLB =
+                     mkCompileSrc {listFiles = Compile.sourceFilesMLB,
+                                   elaborate = Compile.elaborateMLB,
+                                   compile = Compile.compileMLB}
+                  fun compile () =
+                     case start of
+                        Place.SML => compileSML [input]
+                      | Place.MLB => compileMLB input
+                      | Place.Generated => compileCSO (input :: csoFiles)
+                      | Place.O => compileCSO (input :: csoFiles)
+                      | _ => Error.bug "invalid start"
+                  val doit
+                    = trace (Top, "MLton")
+                      (fn () =>
+                       Exn.finally
+                       (compile, fn () =>
+                        List.foreach (!tempFiles, File.remove)))
+               in
+                  doit ()
+               end
+         end
+   end
+
+val commandLine = Process.makeCommandLine commandLine
+
+val main = fn (_, args) => commandLine args
+
+val mainWrapped = fn () => OS.Process.exit (commandLine (CommandLine.arguments ()))
+
+end
diff --git a/samples/Stata/common.doh b/samples/Stata/common.doh
new file mode 100644
index 00000000..b4beaabb
--- /dev/null
+++ b/samples/Stata/common.doh
@@ -0,0 +1,2 @@
+local inname  "inputdata.dta"
+local outname "outputdata.dta"
diff --git a/samples/Stata/hello.ado b/samples/Stata/hello.ado
new file mode 100644
index 00000000..e3203954
--- /dev/null
+++ b/samples/Stata/hello.ado
@@ -0,0 +1,5 @@
+program hello
+	vers 13
+
+	display "Hello world!"
+end
diff --git a/samples/Stata/include.ihlp b/samples/Stata/include.ihlp
new file mode 100644
index 00000000..ddabbc6f
--- /dev/null
+++ b/samples/Stata/include.ihlp
@@ -0,0 +1,2 @@
+{* *! version 1.0.0  19mar2014}{...}
+Hello world!{p_end}
diff --git a/samples/Stata/limits.matah b/samples/Stata/limits.matah
new file mode 100644
index 00000000..214a1b71
--- /dev/null
+++ b/samples/Stata/limits.matah
@@ -0,0 +1 @@
+local MAXDIM   800
diff --git a/samples/Stata/odkmeta.sthlp b/samples/Stata/odkmeta.sthlp
new file mode 100644
index 00000000..2a6d9723
--- /dev/null
+++ b/samples/Stata/odkmeta.sthlp
@@ -0,0 +1,658 @@
+{smcl}
+{* *! version 1.1.0 Matthew White 05jan2014}{...}
+{title:Title}
+
+{phang}
+{cmd:odkmeta} {hline 2} Create a do-file to import ODK data
+
+
+{marker syntax}{...}
+{title:Syntax}
+
+{p 8 10 2}
+{cmd:odkmeta}
+{cmd:using}
+{it:{help filename}}{cmd:,}
+{opt csv(csvfile)}
+{* Using -help histogram- as a template.}{...}
+{* -help histogram- notwithstanding, "opts" is rarely preceded by an underscore.}{...}
+{cmdab:s:urvey(}{it:surveyfile}{cmd:,}
+{it:{help odkmeta##surveyopts:surveyopts}}{cmd:)}
+{cmdab:cho:ices(}{it:choicesfile}{cmd:,}
+{it:{help odkmeta##choicesopts:choicesopts}}{cmd:)}
+[{it:options}]
+
+{* Using -help odbc- as a template.}{...}
+{* 36 is the position of the last character in the first column + 3.}{...}
+{synoptset 36 tabbed}{...}
+{synopthdr}
+{synoptline}
+{syntab:Main}
+{* Using -help heckman- as a template.}{...}
+{p2coldent:* {opt csv(csvfile)}}name of the .csv file that
+contains the ODK data{p_end}
+{p2coldent:* {cmdab:s:urvey(}{it:surveyfile}{cmd:,} {it:{help odkmeta##surveyopts:surveyopts}}{cmd:)}}import
+metadata from the {it:survey} worksheet {it:surveyfile}{p_end}
+{p2coldent:* {cmdab:cho:ices(}{it:choicesfile}{cmd:,} {it:{help odkmeta##choicesopts:choicesopts}}{cmd:)}}import
+metadata from the {it:choices} worksheet {it:choicesfile}{p_end}
+
+{syntab:Fields}
+{synopt:{opt drop:attrib(headers)}}do not import field attributes with
+the column headers {it:headers}{p_end}
+{synopt:{opt keep:attrib(headers)}}import only field attributes with
+the column headers {it:headers}{p_end}
+{synopt:{opt rel:ax}}ignore fields in {it:surveyfile} that
+do not exist in {it:csvfile}{p_end}
+
+{syntab:Lists}
+{* Using -help ca- as a template.}{...}
+{synopt:{cmdab:oth:er(}{it:{help odkmeta##other:other}}{cmd:)}}Stata value of
+{cmd:other} values of {cmd:select or_other} fields; default is {cmd:max}{p_end}
+{synopt:{opt one:line}}write each list on a single line{p_end}
+
+{syntab:Options}
+{synopt:{opt replace}}overwrite existing {it:{help filename}}{p_end}
+{synoptline}
+{p2colreset}{...}
+{* Using -help heckman- as a template.}{...}
+{p 4 6 2}* {opt csv()}, {opt survey()}, and {opt choices()} are required.{p_end}
+
+{marker surveyopts}{...}
+{* Change in {synoptset}: using -help odbc- as a template.}{...}
+{synoptset 23 tabbed}{...}
+{synopthdr:surveyopts}
+{synoptline}
+{syntab:Main}
+{synopt:{opt t:ype(header)}}column header of the {it:type} field attribute;
+default is {cmd:type}{p_end}
+{synopt:{opt name(header)}}column header of the {it:name} field attribute;
+default is {cmd:name}{p_end}
+{synopt:{opt la:bel(header)}}column header of the {it:label} field attribute;
+default is {cmd:label}{p_end}
+{synopt:{opt d:isabled(header)}}column header of
+the {it:disabled} field attribute; default is {cmd:disabled}{p_end}
+{synoptline}
+{p2colreset}{...}
+
+{marker choicesopts}{...}
+{synoptset 23 tabbed}{...}
+{synopthdr:choicesopts}
+{synoptline}
+{syntab:Main}
+{synopt:{opt li:stname(header)}}column header of
+the {it:list_name} list attribute; default is {cmd:list_name}{p_end}
+{synopt:{opt name(header)}}column header of the {it:name} list attribute;
+default is {cmd:name}{p_end}
+{synopt:{opt la:bel(header)}}column header of the {it:label} list attribute;
+default is {cmd:label}{p_end}
+{synoptline}
+{p2colreset}{...}
+
+{marker other}{...}
+{synoptset 23 tabbed}{...}
+{synopthdr:other}
+{synoptline}
+{synopt:{opt max}}maximum value of each list: maximum list value plus one{p_end}
+{synopt:{opt min}}minimum value of each list: minimum list value minus
+one{p_end}
+{synopt:{it:#}}constant value for all value labels{p_end}
+{synoptline}
+{p2colreset}{...}
+
+
+{marker description}{...}
+{title:Description}
+
+{pstd}
+{cmd:odkmeta} creates a do-file to import ODK data,
+using the metadata from the {it:survey} and {it:choices} worksheets of
+the XLSForm. The do-file, saved to {it:filename},
+completes the following tasks in order:
+
+{* Using -help anova- as a template.}{...}
+{phang2}o  Import lists as {help label:value labels}{p_end}
+{phang2}o  Add {cmd:other} values to value labels{p_end}
+{phang2}o  Import field attributes as {help char:characteristics}{p_end}
+{phang2}o  Split {cmd:select_multiple} variables{p_end}
+{phang2}o  Drop {cmd:note} variables{p_end}
+{phang2}o  {help format:Format} {cmd:date}, {cmd:time}, and
+{cmd:datetime} variables{p_end}
+{phang2}o  Attach value labels{p_end}
+{phang2}o  Attach field labels as
+{help label:variable labels} and {help notes}{p_end}
+{phang2}o  {help merge:Merge} repeat groups{p_end}
+
+{pstd}
+After {cmd:select_multiple} variables have been split,
+tasks can be removed from the do-file without affecting other tasks.
+User-written supplements to the do-file may make use of any field attributes,
+which are imported as characteristics.
+
+
+{marker remarks}{...}
+{title:Remarks}
+
+{pstd}
+The {cmd:odkmeta} do-file uses {helpb insheet} to import data.
+Fields that are long strings of digits, such as {cmd:simserial} fields,
+will be imported as numeric even if they are more than 16 digits.
+As a result, they will lose {help precision}.
+
+{pstd}
+The do-file makes limited use of {help mata:Mata} to
+manage variable labels, value labels, and characteristics and
+to import field attributes and lists that contain difficult characters.
+
+{pstd}
+The do-file starts with the definitions of several {help local:local macros};
+these are constants that the do-file uses.
+For instance, local macro {cmd:`datemask'} is the {help date():mask} of
+date values in the .csv files.
+The local macros are automatically set to default values, but
+they may need to be changed depending on the data.
+
+
+{* Using xtdpd_postspecial2b.ihlp as a template.}{...}
+{marker remarks_field_names}{...}
+{title:Remarks for field names}
+
+{pstd}
+ODK field names follow different conventions from
+Stata's {help varname:constraints on variable names}.
+Further, the field names in the .csv files are the fields' "long names,"
+which are formed by concatenating the list of the {it:groups}
+in which the field is nested with the field's "short name."
+ODK long names are often much longer than the length limit on variable names,
+which is 32 characters.
+
+{pstd}
+These differences in convention lead to three kinds of
+problematic field names:
+
+{* Using -help 663- as a template.}{...}
+{phang2}1.  Long field names that involve an invalid combination of characters,
+for example, a name that begins with a colon followed by a number.
+{helpb insheet} will not convert these to Stata names,
+instead naming each variable {cmd:v} concatenated with a positive integer,
+for example, {cmd:v1}.{p_end}
+{phang2}2.  Long field names that are unique ODK names but
+when converted to Stata names and truncated to 32 characters become duplicates.
+{cmd:insheet} will again convert these to {cmd:v}{it:#} names.{p_end}
+{phang2}3.  Long field names of the form {cmd:v}{it:#} that
+become duplicates with other variables that cannot be converted,
+for which {cmd:insheet} chooses {cmd:v}{it:#} names.
+These will be converted to different {cmd:v}{it:#} names.{p_end}
+
+{pstd}
+Because of problem 3,
+it is recommended that you do not name fields as {cmd:v}{it:#}.
+
+{pstd}
+If a field name cannot be imported,
+its characteristic {helpb odkmeta##Odk_bad_name:Odk_bad_name} is {cmd:1};
+otherwise it is {cmd:0}.
+
+{pstd}
+Most tasks that the {cmd:odkmeta} do-file completes do not depend on
+variable names. There are two exceptions:
+
+{phang2}1.  The do-file uses {helpb split} to split
+{cmd:select_multiple} variables. {cmd:split} will result in an error
+if a {cmd:select_multiple} variable has a long name or
+if splitting it would result in duplicate variable names.{p_end}
+{phang2}2.  The do-file uses {helpb reshape} and {helpb merge} to merge
+repeat groups. {cmd:reshape} will result in an error
+if there are long variable names. The merging code will result in an error
+if there are duplicate variable names in two datasets.{p_end}
+
+{pstd}
+Where variable names result in an error, renaming is left to the user.
+The section of the do-file for splitting is preceded by
+a designated area for renaming.
+In the section for reshaping and merging, each repeat group has
+its own area for renaming.
+
+{pstd}
+Many forms do not require any variable renaming.
+For others, only a few variables need to be renamed;
+such renaming should go in the designated areas.
+However, some forms,
+usually because of many nested groups or groups with long names,
+have many long field names that become duplicate Stata names (problem 2 above).
+In this case, it may work best to use fields' short names where possible.
+The following code attempts to rename variables to their field short names.
+Place it as-is before the renaming for {cmd:split}:
+
+{cmd}{...}
+{phang}foreach var of varlist _all {{p_end}
+{phang2}if "`:char `var'[Odk_group]'" != "" {{p_end}
+{phang3}local name = "`:char `var'[Odk_name]'" + ///{p_end}
+{p 16 20 2}cond(`:char `var'[Odk_is_other]', "_other", "") + ///{p_end}
+{p 16 20 2}"`:char `var'[Odk_geopoint]'"{p_end}
+{phang3}local newvar = strtoname("`name'"){p_end}
+{phang3}capture rename `var' `newvar'{p_end}
+{phang2}}{p_end}
+{phang}}{p_end}
+{txt}{...}
+
+
+{marker remarks_lists}{...}
+{title:Remarks for lists}
+
+{pstd}
+ODK list names are not necessarily valid Stata names.
+However, {cmd:odkmeta} uses list names as value label names, and
+it requires that all ODK list names be Stata names.
+
+{pstd}
+ODK lists are lists of associations of names and labels.
+There are two broad categories of lists:
+those whose names are all integer and those with at least one noninteger name.
+In the former case, the values of the value label are
+the same as the names of the list.
+In the latter, the values of the value label indicate
+the order of the names within the list:
+the first name will equal {cmd:1}, the second {cmd:2}, and so on.
+For such lists, the value of the value label may differ
+from the name of the list even if the name is a valid value label value;
+what matters is whether all names of the list are integer.
+
+{pstd}
+However, the value labels of these lists are easy to modify.
+Simply change the values of the value labels in the do-file;
+the rest of the do-file will be unaffected.
+Do not change the value label text.
+
+{pstd}
+Certain names do not interact well with {helpb insheet},
+which the {cmd:odkmeta} do-file uses to import the data.
+
+{pstd}
+For instance, it is not always possible to distinguish a name of {cmd:"."} from
+{helpb missing:sysmiss}. When it is unclear, the do-file assumes that
+values equal the name {cmd:"."} and not {cmd:sysmiss}.
+The problem arises when {cmd:insheet} imports {cmd:select} fields whose
+names in the data are the same as the values of a Stata numeric variable:
+real numbers, {cmd:sysmiss}, and {help missing:extended missing values}.
+{cmd:insheet} imports such fields as numeric,
+converting blank values ({cmd:""}) as {cmd:sysmiss},
+thereby using the same Stata value for the name {cmd:"."} and for blank values.
+
+{pstd}
+{cmd:insheet} does not always interact well with list values' names that
+look like numbers with leading zeros, for example, {cmd:01} or {cmd:0.5}.
+If {cmd:insheet} imports a {cmd:select} field as numeric,
+it will remove such leading zeros, leading to incorrect values or
+an error in the do-file. For similar reasons,
+trailing zeros after a decimal point may be problematic.
+
+{pstd}
+List values' names that look like decimals may also not interact well with
+{cmd:insheet}. If {cmd:insheet} imports a {cmd:select} field as numeric,
+the do-file will convert it to string. However, for {help precision} reasons,
+the resulting string may differ from the original name
+if the decimal has no exact finite-digit representation in binary.
+
+{pstd}
+Generally, names that look like numbers that cannot be stored precisely as
+{helpb data_types:double} are problematic.
+This includes numbers large in magnitude.
+
+
+{marker remarks_variants}{...}
+{title:Remarks for ODK variants}
+
+{pstd}
+{cmd:odkmeta} is not designed for features specific to ODK variants,
+such as SurveyCTO or formhub.
+However, it is often possible to modify the {cmd:odkmeta} do-file to account
+for these features,
+especially as all field attributes are imported as characteristics.
+
+{pstd}
+{ul:SurveyCTO}
+
+{pstd}
+For instance, the {cmd:odkmeta} do-file will result in an error for
+SurveyCTO forms that contain dynamic choice lists.
+One solution is to make the following changes to the do-file in order
+to import {cmd:select} fields with dynamic lists as string variables.
+
+{pstd}
+One section of the {cmd:odkmeta} do-file encodes
+{cmd:select} fields whose list contains a noninteger name.
+Here, remove dynamic lists from the list of such lists:
+
+{phang}{cmd:* Encode fields whose list contains a noninteger name.}{p_end}
+{phang}{cmd:local lists list1 list2 list3 ...}{p_end}
+{phang}...{p_end}
+
+{pstd}
+Above, if {cmd:list3} were a dynamic list, it should be removed.
+
+{pstd}
+The next section of the do-file attaches value labels to variables:
+
+{cmd}{...}
+{phang}* Attach value labels.{p_end}
+{phang}ds, not(vallab){p_end}
+{phang}if "`r(varlist)'" != "" ///{p_end}
+{phang2}ds `r(varlist)', has(char Odk_list_name){p_end}
+{phang}foreach var in `r(varlist)' {{p_end}
+{phang2}if !`:char `var'[Odk_is_other]' {{p_end}
+{phang}...{p_end}
+{txt}{...}
+
+{pstd}
+Add a line to the second {helpb ifcmd:if} command to exclude fields whose
+{it:appearance} attribute contains a {cmd:search()} expression:
+
+{cmd}{...}
+{phang}* Attach value labels.{p_end}
+{phang}ds, not(vallab){p_end}
+{phang}if "`r(varlist)'" != "" ///{p_end}
+{phang2}ds `r(varlist)', has(char Odk_list_name){p_end}
+{phang}foreach var in `r(varlist)' {{p_end}
+{phang2}if !`:char `var'[Odk_is_other]' & ///{p_end}
+{phang3}!strmatch("`:char `var'[Odk_appearance]'", "*search(*)*") {{p_end}
+{phang}...{p_end}
+{txt}{...}
+
+{pstd}
+The do-file will now import fields with dynamic lists without
+resulting in an error.
+
+{pstd}
+{ul:formhub}
+
+{pstd}
+formhub does not export {cmd:note} fields in the .csv files;
+specify option {cmd:relax} to {cmd:odkmeta}.
+
+{pstd}
+formhub exports blank values as {cmd:"n/a"}.
+Multiple sections of the {cmd:odkmeta} do-file must be modified
+to accommodate these.
+
+{pstd}
+Immediately before this line in the section for
+formatting {cmd:date}, {cmd:time}, and {cmd:datetime} variables:
+
+{phang}
+{cmd:if inlist("`type'", "date", "today") {c -(}}
+
+{pstd}
+add the following line:
+
+{phang}
+{cmd:replace `var' = "" if `var' == "n/a"}
+
+{pstd}
+Immediately before this line in the section for attaching value labels:
+
+{phang}
+{cmd:replace `var' = ".o" if `var' == "other"}
+
+{pstd}
+add the following line:
+
+{phang}
+{cmd:replace `var' = "" if `var' == "n/a"}
+
+{pstd}
+These lines replace {cmd:"n/a"} values with blank ({cmd:""}).
+
+
+{marker remarks_missing}{...}
+{title:Remarks for "don't know," refusal, and other missing values}
+
+{pstd}
+ODK lists may contain missing values, including "don't know" and refusal values.
+These will be imported as nonmissing in Stata.
+However, if the lists use largely consistent names or labels for the values,
+it may be possible to automate the conversion of the values to
+{help missing:extended missing values} in Stata.
+The following {help SSC} programs may be helpful:
+
+{p2colset 5 18 22 2}{...}
+{p2col:{cmd:labmvs}}{bf:{stata ssc install labutil2}}{p_end}
+{p2col:{cmd:labmv}}{bf:{stata ssc install labutil2}}{p_end}
+{p2col:{cmd:labrecode}}{bf:{stata ssc install labutil2}}{p_end}
+{p2col:{cmd:labelmiss}}{bf:{stata ssc install labelmiss}}{p_end}
+{p2colreset}{...}
+
+
+{marker options}{...}
+{title:Options}
+
+{dlgtab:Main}
+
+{phang}
+{cmd:survey(}{it:surveyfile}{cmd:,} {it:surveyopts}{cmd:)} imports
+the field metadata from the XLSForm's {it:survey} worksheet.
+{opt survey()} requires {it:surveyfile} to be a comma-separated text file.
+Strings with embedded commas, double quotes, or end-of-line characters must
+be enclosed in quotes, and
+embedded double quotes must be preceded by another double quote.
+
+{pmore}
+Each attribute in the {it:survey} worksheet has
+its own column and column header.
+Use the suboptions {opt type()}, {opt name()}, {opt label()}, and
+{opt disabled()} to specify alternative column headers for
+the {it:type}, {it:name}, {it:label}, and
+{it:disabled} attributes, respectively.
+All field attributes are imported as {help char:characteristics}.
+
+{pmore}
+If the {it:survey} worksheet has duplicate column headers,
+only the first column for each column header is used.
+
+{pmore}
+The {it:type} characteristic is standardized as follows:
+
+{phang2}o  {cmd:select one} is replaced as {cmd:select_one}.{p_end}
+{phang2}o  {cmd:select or other} is replaced as {cmd:select or_other}:
+{cmd:select_one} {it:list_name} {cmd:or other} is replaced as
+{cmd:select_one} {it:list_name} {cmd:or_other}, and
+{cmd:select_multiple} {it:list_name} {cmd:or other} is replaced as
+{cmd:select_multiple} {it:list_name} {cmd:or_other}.{p_end}
+{phang2}o  {cmd:begin_group} is replaced as {cmd:begin group};
+{cmd:end_group} is replaced as {cmd:end group};
+{cmd:begin_repeat} is replaced as {cmd:begin repeat};
+and {cmd:end_repeat} is replaced as {cmd:end repeat}.{p_end}
+
+{pmore}
+In addition to the attributes specified in the {it:survey} worksheet,
+{cmd:odkmeta} attaches these characteristics to variables:
+
+{pmore2}
+{marker Odk_bad_name}{...}
+{cmd:Odk_bad_name} is {cmd:1}
+if the variable's name differs from its ODK field name and {cmd:0} if not.
+See the {help odkmeta##remarks_field_names:remarks for field names} above.
+
+{pmore2}
+{cmd:Odk_group} contains a list of the {it:groups}
+in which the variable is nested, in order of the {it:group} level.
+
+{pmore2}
+{cmd:Odk_long_name} contains the field's "long name,"
+which is formed by concatenating
+the list of the {it:groups} in which the field is nested
+with the field "short name," with elements separated by {cmd:"-"}.
+
+{pmore2}
+{cmd:Odk_repeat} contains the (long) name of the repeat group
+in which the variable is nested.
+
+{pmore2}
+{cmd:Odk_list_name} contains the name of a {cmd:select} field's list.
+
+{pmore2}
+{cmd:Odk_or_other} is {cmd:1}
+if the variable is a {cmd:select or_other} field and {cmd:0} if not.
+
+{pmore2}
+{cmd:Odk_is_other} is {cmd:1}
+if the variable is a free-text {cmd:other} variable associated with
+a {cmd:select or_other} field; otherwise it is {cmd:0}.
+
+{pmore2}
+For {cmd:geopoint} variables, {cmd:Odk_geopoint} is
+the variable's {cmd:geopoint} component:
+{cmd:Latitude}, {cmd:Longitude}, {cmd:Altitude}, or {cmd:Accuracy}.
+For variables that are not type {cmd:geopoint}, {cmd:Odk_geopoint} is blank.
+
+{phang}
+{cmd:choices(}{it:choicesfile}{cmd:,} {it:choicesopts}{cmd:)} imports
+the list metadata from the XLSForm's {it:choices} worksheet.
+{cmd:choices()} requires {it:choicesfile} to be a comma-separated text file.
+Strings with embedded commas, double quotes, or end-of-line characters must
+be enclosed in quotes, and
+embedded double quotes must be preceded by another double quote.
+
+{pmore}
+Each attribute in the {it:choices} worksheet has
+its own column and column header.
+Use the suboptions {opt listname()}, {opt name()}, and {opt label()} to specify
+alternative column headers for the {it:list_name}, {it:name}, and
+{it:label} attributes, respectively.
+List attributes are imported as value labels.
+
+{pmore}
+If the {it:choices} worksheet has duplicate column headers,
+only the first column for each column header is used.
+
+{dlgtab:Fields}
+
+{phang}
+{opt dropattrib(headers)} specifies the column headers of field attributes that
+should not be imported as characteristics.
+{cmd:_all} specifies that all characteristics be dropped.
+
+{phang}
+{opt keepattrib(headers)} specifies the column headers of
+field attributes to import as characteristics.
+{cmd:_all} means all column headers. Other attributes are not imported.
+
+{phang}
+{opt relax} specifies that fields mentioned in {it:surveyfile} that
+do not exist in {it:csvfile} be ignored.
+By default, the do-file attempts to attach the characteristics to
+these variables, resulting in an error if the variable does not exist.
+For fields associated with multiple variables, for example,
+{cmd:geopoint} fields, {opt relax} attempts to attach
+the characteristics to as many variables as possible:
+an error does not result if some but not all variables exist.
+
+{dlgtab:Lists}
+
+{phang}
+{opt other(other)} specifies the Stata value of {cmd:other} values of
+{cmd:select or_other} fields.
+
+{pmore}
+{cmd:max}, the default, specifies that the Stata value of {cmd:other} vary by
+the field's list.
+For each list, {cmd:other} will be the maximum value of the list plus one.
+
+{pmore}
+{cmd:min} specifies that the Stata value of {cmd:other} vary by
+the field's list.
+For each list, {cmd:other} will be the minimum value of the list minus one.
+
+{pmore}
+{it:#} specifies a constant value for {cmd:other} that
+will be used for all lists.
+
+{phang}
+{opt oneline} specifies that each list's value label definition be written on
+one line, rather than on multiple using {helpb delimit:#delimit ;}.
+
+{dlgtab:Other}
+
+{phang}
+{opt replace} specifies that the {cmd:odkmeta} do-file be replaced
+if it already exists.
+
+
+{marker examples}{...}
+{title:Examples}
+
+{pstd}
+Create a do-file named {cmd:import.do} that imports ODK data,
+including the metadata in {cmd:survey.csv} and {cmd:choices.csv}
+{p_end}
+{phang2}{cmd}
+. odkmeta using import.do,
+csv("ODKexample.csv") survey("survey.csv") choices("choices.csv")
+{txt}
+
+{pstd}
+Same as the previous {cmd:odkmeta} command,
+but specifies that the field {it:name} attribute appears in
+the {cmd:fieldname} column of {cmd:survey_fieldname.csv}
+{p_end}
+{phang2}{cmd}
+. odkmeta using import.do,
+csv("ODKexample.csv") survey("survey_fieldname.csv", name(fieldname))
+choices("choices.csv") replace
+{txt}
+
+{pstd}
+Same as the previous {cmd:odkmeta} command,
+but specifies that the list {it:name} attribute appears in
+the {cmd:valuename} column of {cmd:choices_valuename.csv}
+{p_end}
+{phang2}{cmd}
+. odkmeta using import.do,
+csv("ODKexample.csv") survey("survey_fieldname.csv", name(fieldname))
+choices("choices_valuename.csv", name(valuename)) replace
+{txt}
+
+{pstd}
+Create a do-file that imports all field attributes except for {it:hint}
+{p_end}
+{phang2}{cmd}
+. odkmeta using import.do,
+csv("ODKexample.csv") survey("survey.csv") choices("choices.csv")
+dropattrib(hint) replace
+{txt}
+
+{pstd}
+Same as the previous {cmd:odkmeta} command,
+but does not import any field attributes
+{p_end}
+{phang2}{cmd}
+. odkmeta using import.do,
+csv("ODKexample.csv") survey("survey.csv") choices("choices.csv")
+dropattrib(_all) replace
+{txt}
+
+{pstd}
+Create a do-file that
+imports {cmd:other} values of {cmd:select or_other} fields as {cmd:99}
+{p_end}
+{phang2}{cmd}
+. odkmeta using import.do,
+csv("ODKexample.csv") survey("survey.csv") choices("choices.csv")
+other(99) replace
+{txt}
+
+
+{marker acknowledgements}{...}
+{title:Acknowledgements}
+
+{pstd}
+Lindsey Shaughnessy of Innovations for Poverty Action assisted in
+almost all aspects of {cmd:odkmeta}'s development.
+She collaborated on the structure of the program, was a very helpful tester, and
+contributed information about ODK.
+
+
+{marker author}{...}
+{title:Author}
+
+{pstd}Matthew White, Innovations for Poverty Action{p_end}
+{pstd}mwhite@poverty-action.org{p_end}
diff --git a/samples/Stata/regress_example.do b/samples/Stata/regress_example.do
new file mode 100644
index 00000000..77bd87d5
--- /dev/null
+++ b/samples/Stata/regress_example.do
@@ -0,0 +1,18 @@
+* Setup
+sysuse auto
+
+* Fit a linear regression
+regress mpg weight foreign
+
+* Fit a better linear regression, from a physics standpoint
+gen gp100m = 100/mpg
+regress gp100m weight foreign
+
+* Obtain beta coefficients without refitting model
+regress, beta
+
+* Suppress intercept term
+regress weight length, noconstant
+
+* Model already has constant
+regress weight length bn.foreign, hascons
diff --git a/samples/Stata/tanh.mata b/samples/Stata/tanh.mata
new file mode 100644
index 00000000..63504603
--- /dev/null
+++ b/samples/Stata/tanh.mata
@@ -0,0 +1,8 @@
+numeric matrix tanh(numeric matrix u)
+{
+		numeric matrix  eu, emu
+
+		eu = exp(u)
+		emu = exp(-u)
+		return( (eu-emu):/(eu+emu) )
+}
diff --git a/samples/Stylus/demo.styl b/samples/Stylus/demo.styl
new file mode 100644
index 00000000..761d5be3
--- /dev/null
+++ b/samples/Stylus/demo.styl
@@ -0,0 +1,31 @@
+border-radius()
+  -webkit-border-radius arguments
+  -moz-border-radius arguments
+  border-radius arguments
+
+a.button
+  border-radius 5px
+
+fonts = helvetica, arial, sans-serif
+
+body {
+  padding: 50px;
+  font: 14px/1.4 fonts;
+}
+
+form
+  input[type=text]
+    padding: 5px
+    border: 1px solid #eee
+    color: #ddd
+
+textarea
+  @extends form input[type=text]
+  padding: 10px
+
+$foo
+  color: #FFF
+
+.bar
+  background: #000
+  @extends $foo
diff --git a/samples/SuperCollider/BCR2000.sc b/samples/SuperCollider/BCR2000.sc
deleted file mode 100644
index f8f96a70..00000000
--- a/samples/SuperCollider/BCR2000.sc
+++ /dev/null
@@ -1,114 +0,0 @@
-BCR2000 {
-  var controls,
-      controlBuses,
-      rangedControlBuses,
-      responders
-  ;
-
-  *new {
-    ^super.new.init;
-  }
-    
-  init {
-    controls = Dictionary.new(108);
-    controlBuses = Dictionary.new(108);
-    rangedControlBuses = Dictionary.new(108);
-
-    this.createCCResponders;
-  }
-
-  createCCResponders {
-    responders = Array.fill(108, {|i|
-      CCResponder({|src, chan, num, val|
-        [src, chan, num, val].postln;
-
-        // Write to controls 
-        controls.put(i + 1, val);
-
-        // Write to bus (converted to scalar 0..1)
-        controlBuses.put(i + 1, Bus.control(Server.default));
-        controlBuses.at(i + 1).value = val / 127;
-      },
-        // Adjust values as/if needed
-        nil, // src
-        nil, // chan
-        nil, // num
-        nil  // value    
-      )
-    });
-  }
-
-  // Value from BCR
-  at {arg controlNum;
-    ^controls.at(controlNum)
-  }
-
-  // Convert to 0..1
-  scalarAt {arg controlNum; 
-    ^controls.at(controlNum) / 127
-  }
-
-  // Get a bus
-  busAt {arg controlNum;
-    ^controlBuses.at(controlNum)
-  }
-
-  /*
-  busRangeAt(arg controlNum, lo, hi;
-    if (rangedControlBuses.at(controlNum).isNil, {
-      rangedControlBuses.put(controlNum, Bus.control(Server.default))
-    }); 
-   
-    // Left to right order of operations
-    //rangedControlBuses.put(
-    bus.value = hi - lo * controls.at(controlNum) + lo;
-
-    ^bus
-  }
-  */
-}
-
-/* Scratch
-Dictionary
-b = BCR2000();
-b.at(4);
-b.scalarAt(4);
-b.controls[5].get;
-throw
-z = Dictionary.new(2);
-z.at(\1);
-Array.fill(10, {|i| i.postln;})
-(2 + 3).asSymbol;
-
-
-SynthDef(\x, {
-  arg amp = 0.01,
-      freq = 1200,
-      modDepth = 0.7,
-      modFreq = 2
-  ;
-
-  var
-    carrier,
-    modulator   
-  ;
-
-  modulator = SinOsc.ar(modFreq, mul: modDepth);
-  carrier = Saw.ar(freq, add: modulator, mul: amp);
-
-  Out.ar([0,1], carrier)
-}).store; 
-
-
-x = Synth(\x);
-x.set(\modDepth, 1);
-x.set(\modFreq, 64); 
-
-x.map(\modFreq, b.busAt(       
-
-
-
-ControlSpec
-*/
-
-
diff --git a/samples/Swift/section-11.swift b/samples/Swift/section-11.swift
new file mode 100644
index 00000000..3be056ab
--- /dev/null
+++ b/samples/Swift/section-11.swift
@@ -0,0 +1,4 @@
+let apples = 3
+let oranges = 5
+let appleSummary = "I have \(apples) apples."
+let fruitSummary = "I have \(apples + oranges) pieces of fruit."
diff --git a/samples/Swift/section-13.swift b/samples/Swift/section-13.swift
new file mode 100644
index 00000000..06589fd7
--- /dev/null
+++ b/samples/Swift/section-13.swift
@@ -0,0 +1,8 @@
+var shoppingList = ["catfish", "water", "tulips", "blue paint"]
+shoppingList[1] = "bottle of water"
+
+var occupations = [
+    "Malcolm": "Captain",
+    "Kaylee": "Mechanic",
+ ]
+occupations["Jayne"] = "Public Relations"
diff --git a/samples/Swift/section-15.swift b/samples/Swift/section-15.swift
new file mode 100644
index 00000000..3641de25
--- /dev/null
+++ b/samples/Swift/section-15.swift
@@ -0,0 +1,2 @@
+let emptyArray = String[]()
+let emptyDictionary = Dictionary<String, Float>()
diff --git a/samples/Swift/section-17.swift b/samples/Swift/section-17.swift
new file mode 100644
index 00000000..e079c3b2
--- /dev/null
+++ b/samples/Swift/section-17.swift
@@ -0,0 +1 @@
+shoppingList = []   // Went shopping and bought everything.
diff --git a/samples/Swift/section-19.swift b/samples/Swift/section-19.swift
new file mode 100644
index 00000000..262512fc
--- /dev/null
+++ b/samples/Swift/section-19.swift
@@ -0,0 +1,10 @@
+let individualScores = [75, 43, 103, 87, 12]
+var teamScore = 0
+for score in individualScores {
+    if score > 50 {
+        teamScore += 3
+    } else {
+        teamScore += 1
+    }
+}
+teamScore
diff --git a/samples/Swift/section-21.swift b/samples/Swift/section-21.swift
new file mode 100644
index 00000000..fb06bd77
--- /dev/null
+++ b/samples/Swift/section-21.swift
@@ -0,0 +1,8 @@
+var optionalString: String? = "Hello"
+optionalString == nil
+
+var optionalName: String? = "John Appleseed"
+var greeting = "Hello!"
+if let name = optionalName {
+    greeting = "Hello, \(name)"
+}
diff --git a/samples/Swift/section-23.swift b/samples/Swift/section-23.swift
new file mode 100644
index 00000000..09f4747c
--- /dev/null
+++ b/samples/Swift/section-23.swift
@@ -0,0 +1,11 @@
+let vegetable = "red pepper"
+switch vegetable {
+    case "celery":
+        let vegetableComment = "Add some raisins and make ants on a log."
+    case "cucumber", "watercress":
+        let vegetableComment = "That would make a good tea sandwich."
+    case let x where x.hasSuffix("pepper"):
+        let vegetableComment = "Is it a spicy \(x)?"
+    default:
+        let vegetableComment = "Everything tastes good in soup."
+}
diff --git a/samples/Swift/section-25.swift b/samples/Swift/section-25.swift
new file mode 100644
index 00000000..80e19f9c
--- /dev/null
+++ b/samples/Swift/section-25.swift
@@ -0,0 +1,14 @@
+let interestingNumbers = [
+    "Prime": [2, 3, 5, 7, 11, 13],
+    "Fibonacci": [1, 1, 2, 3, 5, 8],
+    "Square": [1, 4, 9, 16, 25],
+]
+var largest = 0
+for (kind, numbers) in interestingNumbers {
+    for number in numbers {
+        if number > largest {
+            largest = number
+        }
+    }
+}
+largest
diff --git a/samples/Swift/section-27.swift b/samples/Swift/section-27.swift
new file mode 100644
index 00000000..e2feda12
--- /dev/null
+++ b/samples/Swift/section-27.swift
@@ -0,0 +1,11 @@
+var n = 2
+while n < 100 {
+    n = n * 2
+}
+n
+
+var m = 2
+do {
+    m = m * 2
+} while m < 100
+m
diff --git a/samples/Swift/section-29.swift b/samples/Swift/section-29.swift
new file mode 100644
index 00000000..b269cf97
--- /dev/null
+++ b/samples/Swift/section-29.swift
@@ -0,0 +1,11 @@
+var firstForLoop = 0
+for i in 0..3 {
+    firstForLoop += i
+}
+firstForLoop
+
+var secondForLoop = 0
+for var i = 0; i < 3; ++i {
+    secondForLoop += 1
+}
+secondForLoop
diff --git a/samples/Swift/section-3.swift b/samples/Swift/section-3.swift
new file mode 100644
index 00000000..47ea7d53
--- /dev/null
+++ b/samples/Swift/section-3.swift
@@ -0,0 +1 @@
+println("Hello, world")
diff --git a/samples/Swift/section-31.swift b/samples/Swift/section-31.swift
new file mode 100644
index 00000000..9b77ea62
--- /dev/null
+++ b/samples/Swift/section-31.swift
@@ -0,0 +1,4 @@
+func greet(name: String, day: String) -> String {
+    return "Hello \(name), today is \(day)."
+}
+greet("Bob", "Tuesday")
diff --git a/samples/Swift/section-33.swift b/samples/Swift/section-33.swift
new file mode 100644
index 00000000..89361a75
--- /dev/null
+++ b/samples/Swift/section-33.swift
@@ -0,0 +1,4 @@
+func getGasPrices() -> (Double, Double, Double) {
+    return (3.59, 3.69, 3.79)
+}
+getGasPrices()
diff --git a/samples/Swift/section-35.swift b/samples/Swift/section-35.swift
new file mode 100644
index 00000000..c724746f
--- /dev/null
+++ b/samples/Swift/section-35.swift
@@ -0,0 +1,9 @@
+func sumOf(numbers: Int...) -> Int {
+    var sum = 0
+    for number in numbers {
+        sum += number
+    }
+    return sum
+}
+sumOf()
+sumOf(42, 597, 12)
diff --git a/samples/Swift/section-37.swift b/samples/Swift/section-37.swift
new file mode 100644
index 00000000..f78fdbe9
--- /dev/null
+++ b/samples/Swift/section-37.swift
@@ -0,0 +1,9 @@
+func returnFifteen() -> Int {
+    var y = 10
+    func add() {
+        y += 5
+    }
+    add()
+    return y
+}
+returnFifteen()
diff --git a/samples/Swift/section-39.swift b/samples/Swift/section-39.swift
new file mode 100644
index 00000000..d2fa5fe3
--- /dev/null
+++ b/samples/Swift/section-39.swift
@@ -0,0 +1,8 @@
+func makeIncrementer() -> (Int -> Int) {
+    func addOne(number: Int) -> Int {
+        return 1 + number
+    }
+    return addOne
+}
+var increment = makeIncrementer()
+increment(7)
diff --git a/samples/Swift/section-41.swift b/samples/Swift/section-41.swift
new file mode 100644
index 00000000..e72d410a
--- /dev/null
+++ b/samples/Swift/section-41.swift
@@ -0,0 +1,13 @@
+func hasAnyMatches(list: Int[], condition: Int -> Bool) -> Bool {
+    for item in list {
+        if condition(item) {
+            return true
+        }
+    }
+    return false
+}
+func lessThanTen(number: Int) -> Bool {
+    return number < 10
+}
+var numbers = [20, 19, 7, 12]
+hasAnyMatches(numbers, lessThanTen)
diff --git a/samples/Swift/section-43.swift b/samples/Swift/section-43.swift
new file mode 100644
index 00000000..5dee10f7
--- /dev/null
+++ b/samples/Swift/section-43.swift
@@ -0,0 +1,5 @@
+numbers.map({
+    (number: Int) -> Int in
+    let result = 3 * number
+    return result
+})
diff --git a/samples/Swift/section-45.swift b/samples/Swift/section-45.swift
new file mode 100644
index 00000000..dbf29eed
--- /dev/null
+++ b/samples/Swift/section-45.swift
@@ -0,0 +1 @@
+numbers.map({ number in 3 * number })
diff --git a/samples/Swift/section-47.swift b/samples/Swift/section-47.swift
new file mode 100644
index 00000000..73defb77
--- /dev/null
+++ b/samples/Swift/section-47.swift
@@ -0,0 +1 @@
+sort([1, 5, 3, 12, 2]) { $0 > $1 }
diff --git a/samples/Swift/section-49.swift b/samples/Swift/section-49.swift
new file mode 100644
index 00000000..69739b8d
--- /dev/null
+++ b/samples/Swift/section-49.swift
@@ -0,0 +1,6 @@
+class Shape {
+    var numberOfSides = 0
+    func simpleDescription() -> String {
+        return "A shape with \(numberOfSides) sides."
+    }
+}
diff --git a/samples/Swift/section-5.swift b/samples/Swift/section-5.swift
new file mode 100644
index 00000000..885d5812
--- /dev/null
+++ b/samples/Swift/section-5.swift
@@ -0,0 +1,3 @@
+var myVariable = 42
+myVariable = 50
+let myConstant = 42
diff --git a/samples/Swift/section-51.swift b/samples/Swift/section-51.swift
new file mode 100644
index 00000000..a84750c8
--- /dev/null
+++ b/samples/Swift/section-51.swift
@@ -0,0 +1,3 @@
+var shape = Shape()
+shape.numberOfSides = 7
+var shapeDescription = shape.simpleDescription()
diff --git a/samples/Swift/section-53.swift b/samples/Swift/section-53.swift
new file mode 100644
index 00000000..74aac461
--- /dev/null
+++ b/samples/Swift/section-53.swift
@@ -0,0 +1,12 @@
+class NamedShape {
+    var numberOfSides: Int = 0
+    var name: String
+
+    init(name: String) {
+       self.name = name
+    }
+
+    func simpleDescription() -> String {
+       return "A shape with \(numberOfSides) sides."
+    }
+}
diff --git a/samples/Swift/section-55.swift b/samples/Swift/section-55.swift
new file mode 100644
index 00000000..6e489078
--- /dev/null
+++ b/samples/Swift/section-55.swift
@@ -0,0 +1,20 @@
+class Square: NamedShape {
+    var sideLength: Double
+
+    init(sideLength: Double, name: String) {
+        self.sideLength = sideLength
+        super.init(name: name)
+        numberOfSides = 4
+    }
+
+    func area() ->  Double {
+        return sideLength * sideLength
+    }
+
+    override func simpleDescription() -> String {
+        return "A square with sides of length \(sideLength)."
+    }
+}
+let test = Square(sideLength: 5.2, name: "my test square")
+test.area()
+test.simpleDescription()
diff --git a/samples/Swift/section-57.swift b/samples/Swift/section-57.swift
new file mode 100644
index 00000000..90d2e03c
--- /dev/null
+++ b/samples/Swift/section-57.swift
@@ -0,0 +1,26 @@
+class EquilateralTriangle: NamedShape {
+    var sideLength: Double = 0.0
+
+    init(sideLength: Double, name: String) {
+        self.sideLength = sideLength
+        super.init(name: name)
+        numberOfSides = 3
+    }
+
+    var perimeter: Double {
+        get {
+             return 3.0 * sideLength
+        }
+        set {
+            sideLength = newValue / 3.0
+        }
+    }
+
+    override func simpleDescription() -> String {
+        return "An equilateral triagle with sides of length \(sideLength)."
+    }
+}
+var triangle = EquilateralTriangle(sideLength: 3.1, name: "a triangle")
+triangle.perimeter
+triangle.perimeter = 9.9
+triangle.sideLength
diff --git a/samples/Swift/section-59.swift b/samples/Swift/section-59.swift
new file mode 100644
index 00000000..21e3b09d
--- /dev/null
+++ b/samples/Swift/section-59.swift
@@ -0,0 +1,21 @@
+class TriangleAndSquare {
+    var triangle: EquilateralTriangle {
+        willSet {
+            square.sideLength = newValue.sideLength
+        }
+    }
+    var square: Square {
+        willSet {
+            triangle.sideLength = newValue.sideLength
+        }
+    }
+    init(size: Double, name: String) {
+        square = Square(sideLength: size, name: name)
+        triangle = EquilateralTriangle(sideLength: size, name: name)
+    }
+}
+var triangleAndSquare = TriangleAndSquare(size: 10, name: "another test shape")
+triangleAndSquare.square.sideLength
+triangleAndSquare.triangle.sideLength
+triangleAndSquare.square = Square(sideLength: 50, name: "larger square")
+triangleAndSquare.triangle.sideLength
diff --git a/samples/Swift/section-61.swift b/samples/Swift/section-61.swift
new file mode 100644
index 00000000..013ded74
--- /dev/null
+++ b/samples/Swift/section-61.swift
@@ -0,0 +1,8 @@
+class Counter {
+    var count: Int = 0
+    func incrementBy(amount: Int, numberOfTimes times: Int) {
+        count += amount * times
+    }
+}
+var counter = Counter()
+counter.incrementBy(2, numberOfTimes: 7)
diff --git a/samples/Swift/section-63.swift b/samples/Swift/section-63.swift
new file mode 100644
index 00000000..9305cfc7
--- /dev/null
+++ b/samples/Swift/section-63.swift
@@ -0,0 +1,2 @@
+let optionalSquare: Square? = Square(sideLength: 2.5, name: "optional square")
+let sideLength = optionalSquare?.sideLength
diff --git a/samples/Swift/section-65.swift b/samples/Swift/section-65.swift
new file mode 100644
index 00000000..809c71ce
--- /dev/null
+++ b/samples/Swift/section-65.swift
@@ -0,0 +1,21 @@
+enum Rank: Int {
+    case Ace = 1
+    case Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten
+    case Jack, Queen, King
+    func simpleDescription() -> String {
+        switch self {
+            case .Ace:
+                return "ace"
+            case .Jack:
+                return "jack"
+            case .Queen:
+                return "queen"
+            case .King:
+                return "king"
+            default:
+                return String(self.toRaw())
+        }
+    }
+}
+let ace = Rank.Ace
+let aceRawValue = ace.toRaw()
diff --git a/samples/Swift/section-67.swift b/samples/Swift/section-67.swift
new file mode 100644
index 00000000..d5be66c2
--- /dev/null
+++ b/samples/Swift/section-67.swift
@@ -0,0 +1,3 @@
+if let convertedRank = Rank.fromRaw(3) {
+    let threeDescription = convertedRank.simpleDescription()
+}
diff --git a/samples/Swift/section-69.swift b/samples/Swift/section-69.swift
new file mode 100644
index 00000000..fc6d7a4c
--- /dev/null
+++ b/samples/Swift/section-69.swift
@@ -0,0 +1,17 @@
+enum Suit {
+    case Spades, Hearts, Diamonds, Clubs
+    func simpleDescription() -> String {
+        switch self {
+            case .Spades:
+                return "spades"
+            case .Hearts:
+                return "hearts"
+            case .Diamonds:
+                return "diamonds"
+            case .Clubs:
+                return "clubs"
+        }
+    }
+}
+let hearts = Suit.Hearts
+let heartsDescription = hearts.simpleDescription()
diff --git a/samples/Swift/section-7.swift b/samples/Swift/section-7.swift
new file mode 100644
index 00000000..7d55c034
--- /dev/null
+++ b/samples/Swift/section-7.swift
@@ -0,0 +1,3 @@
+let implicitInteger = 70
+let implicitDouble = 70.0
+let explicitDouble: Double = 70
diff --git a/samples/Swift/section-71.swift b/samples/Swift/section-71.swift
new file mode 100644
index 00000000..f006d0f9
--- /dev/null
+++ b/samples/Swift/section-71.swift
@@ -0,0 +1,9 @@
+struct Card {
+    var rank: Rank
+    var suit: Suit
+    func simpleDescription() -> String {
+        return "The \(rank.simpleDescription()) of \(suit.simpleDescription())"
+    }
+}
+let threeOfSpades = Card(rank: .Three, suit: .Spades)
+let threeOfSpadesDescription = threeOfSpades.simpleDescription()
diff --git a/samples/Swift/section-73.swift b/samples/Swift/section-73.swift
new file mode 100644
index 00000000..be0cf35f
--- /dev/null
+++ b/samples/Swift/section-73.swift
@@ -0,0 +1,14 @@
+enum ServerResponse {
+    case Result(String, String)
+    case Error(String)
+}
+
+let success = ServerResponse.Result("6:00 am", "8:09 pm")
+let failure = ServerResponse.Error("Out of cheese.")
+
+switch success {
+    case let .Result(sunrise, sunset):
+        let serverResponse = "Sunrise is at \(sunrise) and sunset is at \(sunset)."
+    case let .Error(error):
+        let serverResponse = "Failure...  \(error)"
+}
diff --git a/samples/Swift/section-75.swift b/samples/Swift/section-75.swift
new file mode 100644
index 00000000..46dd36da
--- /dev/null
+++ b/samples/Swift/section-75.swift
@@ -0,0 +1,4 @@
+protocol ExampleProtocol {
+     var simpleDescription: String { get }
+     mutating func adjust()
+}
diff --git a/samples/Swift/section-77.swift b/samples/Swift/section-77.swift
new file mode 100644
index 00000000..bc052d20
--- /dev/null
+++ b/samples/Swift/section-77.swift
@@ -0,0 +1,20 @@
+class SimpleClass: ExampleProtocol {
+     var simpleDescription: String = "A very simple class."
+     var anotherProperty: Int = 69105
+     func adjust() {
+          simpleDescription += "  Now 100% adjusted."
+     }
+}
+var a = SimpleClass()
+a.adjust()
+let aDescription = a.simpleDescription
+
+struct SimpleStructure: ExampleProtocol {
+     var simpleDescription: String = "A simple structure"
+     mutating func adjust() {
+          simpleDescription += " (adjusted)"
+     }
+}
+var b = SimpleStructure()
+b.adjust()
+let bDescription = b.simpleDescription
diff --git a/samples/Swift/section-79.swift b/samples/Swift/section-79.swift
new file mode 100644
index 00000000..0e7b831b
--- /dev/null
+++ b/samples/Swift/section-79.swift
@@ -0,0 +1,9 @@
+extension Int: ExampleProtocol {
+    var simpleDescription: String {
+        return "The number \(self)"
+    }
+    mutating func adjust() {
+        self += 42
+    }
+ }
+7.simpleDescription
diff --git a/samples/Swift/section-81.swift b/samples/Swift/section-81.swift
new file mode 100644
index 00000000..74e0a000
--- /dev/null
+++ b/samples/Swift/section-81.swift
@@ -0,0 +1,3 @@
+let protocolValue: ExampleProtocol = a
+protocolValue.simpleDescription
+// protocolValue.anotherProperty  // Uncomment to see the error
diff --git a/samples/Swift/section-83.swift b/samples/Swift/section-83.swift
new file mode 100644
index 00000000..aa2e6d75
--- /dev/null
+++ b/samples/Swift/section-83.swift
@@ -0,0 +1,8 @@
+func repeat<ItemType>(item: ItemType, times: Int) -> ItemType[] {
+    var result = ItemType[]()
+    for i in 0..times {
+         result += item
+    }
+    return result
+}
+repeat("knock", 4)
diff --git a/samples/Swift/section-85.swift b/samples/Swift/section-85.swift
new file mode 100644
index 00000000..b2f52840
--- /dev/null
+++ b/samples/Swift/section-85.swift
@@ -0,0 +1,7 @@
+// Reimplement the Swift standard library's optional type
+enum OptionalValue<T> {
+    case None
+    case Some(T)
+}
+var possibleInteger: OptionalValue<Int> = .None
+possibleInteger = .Some(100)
diff --git a/samples/Swift/section-87.swift b/samples/Swift/section-87.swift
new file mode 100644
index 00000000..f9dc7f33
--- /dev/null
+++ b/samples/Swift/section-87.swift
@@ -0,0 +1,11 @@
+func anyCommonElements <T, U where T: Sequence, U: Sequence, T.GeneratorType.Element: Equatable, T.GeneratorType.Element == U.GeneratorType.Element> (lhs: T, rhs: U) -> Bool {
+    for lhsItem in lhs {
+        for rhsItem in rhs {
+            if lhsItem == rhsItem {
+                return true
+            }
+        }
+    }
+   return false
+}
+anyCommonElements([1, 2, 3], [3])
diff --git a/samples/Swift/section-9.swift b/samples/Swift/section-9.swift
new file mode 100644
index 00000000..2e83efa1
--- /dev/null
+++ b/samples/Swift/section-9.swift
@@ -0,0 +1,3 @@
+let label = "The width is "
+let width = 94
+let widthLabel = label + String(width)
diff --git a/samples/SystemVerilog/endpoint_phy_wrapper.svh b/samples/SystemVerilog/endpoint_phy_wrapper.svh
new file mode 100644
index 00000000..e7ab790b
--- /dev/null
+++ b/samples/SystemVerilog/endpoint_phy_wrapper.svh
@@ -0,0 +1,216 @@
+module endpoint_phy_wrapper
+  (
+   input clk_sys_i,
+   input clk_ref_i,
+   input clk_rx_i,
+   input rst_n_i,
+
+   IWishboneMaster.master src,
+   IWishboneSlave.slave snk,
+   IWishboneMaster.master sys,
+   
+   output [9:0] td_o,
+   input [9:0] rd_i,
+
+   output txn_o,
+   output txp_o,
+
+   input rxn_i,
+   input rxp_i
+   );
+
+   wire rx_clock;
+   
+   parameter g_phy_type   = "GTP";   
+
+   wire[15:0] gtx_data;
+   wire [1:0]gtx_k;
+   wire gtx_disparity;
+   wire gtx_enc_error;
+   wire [15:0] grx_data;
+   wire grx_clk;
+   wire [1:0]grx_k;
+   wire grx_enc_error;
+   wire [3:0] grx_bitslide;
+   wire gtp_rst;
+   wire tx_clock;
+   
+   generate
+      if(g_phy_type == "TBI") begin
+
+         assign rx_clock  = clk_ref_i;
+         assign tx_clock  = clk_rx_i;
+         
+         
+         wr_tbi_phy U_Phy 
+           (
+            .serdes_rst_i (gtp_rst),
+            .serdes_loopen_i(1'b0),
+            .serdes_prbsen_i(1'b0),
+            .serdes_enable_i(1'b1), 
+            .serdes_syncen_i(1'b1),
+
+            .serdes_tx_data_i  (gtx_data[7:0]),
+            .serdes_tx_k_i     (gtx_k[0]),
+            .serdes_tx_disparity_o (gtx_disparity),
+            .serdes_tx_enc_err_o   (gtx_enc_error),
+
+            .serdes_rx_data_o      (grx_data[7:0]),
+            .serdes_rx_k_o        (grx_k[0]),
+            .serdes_rx_enc_err_o  (grx_enc_error),
+            .serdes_rx_bitslide_o (grx_bitslide),
+
+
+            .tbi_refclk_i (clk_ref_i),
+            .tbi_rbclk_i  (clk_rx_i),
+
+            .tbi_td_o     (td_o),
+            .tbi_rd_i     (rd_i),
+            .tbi_syncen_o (),
+            .tbi_loopen_o (),
+            .tbi_prbsen_o (),
+            .tbi_enable_o ()
+            );
+
+      end else if (g_phy_type == "GTX") begin // if (g_phy_type == "TBI")
+         wr_gtx_phy_virtex6
+           #(
+             .g_simulation(1)
+             ) U_PHY 
+             (
+              .clk_ref_i(clk_ref_i),
+              
+              .tx_clk_o   (tx_clock),
+              .tx_data_i (gtx_data),
+              .tx_k_i (gtx_k),
+              .tx_disparity_o (gtx_disparity),
+              .tx_enc_err_o(gtx_enc_error),
+              .rx_rbclk_o (rx_clock),
+              .rx_data_o (grx_data),
+              .rx_k_o  (grx_k),
+              .rx_enc_err_o (grx_enc_error),
+              .rx_bitslide_o  (),
+
+              .rst_i    (!rst_n_i),
+              .loopen_i (1'b0),
+
+              .pad_txn_o (txn_o),
+              .pad_txp_o (txp_o),
+
+              .pad_rxn_i (rxn_i),
+              .pad_rxp_i (rxp_i)
+    );
+                   
+      end  else if (g_phy_type == "GTP") begin // if (g_phy_type == "TBI")
+         assign #1 tx_clock  = clk_ref_i;
+         
+         wr_gtp_phy_spartan6
+           #(
+             .g_simulation(1)
+             ) U_PHY 
+             (
+              .gtp_clk_i(clk_ref_i),
+              .ch0_ref_clk_i(clk_ref_i),
+              
+              .ch0_tx_data_i (gtx_data[7:0]),
+              .ch0_tx_k_i (gtx_k[0]),
+              .ch0_tx_disparity_o (gtx_disparity),
+              .ch0_tx_enc_err_o(gtx_enc_error),
+              .ch0_rx_rbclk_o (rx_clock),
+              .ch0_rx_data_o (grx_data[7:0]),
+              .ch0_rx_k_o  (grx_k[0]),
+              .ch0_rx_enc_err_o (grx_enc_error),
+              .ch0_rx_bitslide_o  (),
+
+              .ch0_rst_i    (!rst_n_i),
+              .ch0_loopen_i (1'b0),
+
+              .pad_txn0_o (txn_o),
+              .pad_txp0_o (txp_o),
+
+              .pad_rxn0_i (rxn_i),
+              .pad_rxp0_i (rxp_i)
+              );
+         
+      end // else: !if(g_phy_type == "TBI")
+   endgenerate
+   
+   wr_endpoint
+     #(
+       .g_simulation          (1),
+       .g_pcs_16bit(g_phy_type == "GTX" ? 1: 0),
+       .g_rx_buffer_size (1024),
+       .g_with_rx_buffer(0),
+       .g_with_timestamper    (1),
+       .g_with_dmtd           (0),
+       .g_with_dpi_classifier (1),
+       .g_with_vlans          (0),
+       .g_with_rtu            (0)
+       ) DUT (
+              .clk_ref_i (clk_ref_i),
+              .clk_sys_i (clk_sys_i),
+              .clk_dmtd_i (clk_ref_i),
+              .rst_n_i  (rst_n_i),
+              .pps_csync_p1_i (1'b0),
+
+              .phy_rst_o   (),
+              .phy_loopen_o (),
+              .phy_enable_o (),
+              .phy_syncen_o (),
+
+              .phy_ref_clk_i      (tx_clock),
+              .phy_tx_data_o      (gtx_data),
+              .phy_tx_k_o         (gtx_k),
+              .phy_tx_disparity_i (gtx_disparity),
+              .phy_tx_enc_err_i   (gtx_enc_error),
+
+              .phy_rx_data_i     (grx_data),
+              .phy_rx_clk_i      (rx_clock),
+              .phy_rx_k_i        (grx_k),
+              .phy_rx_enc_err_i  (grx_enc_error),
+              .phy_rx_bitslide_i (5'b0),
+
+              .src_dat_o   (snk.dat_i),
+              .src_adr_o   (snk.adr),
+              .src_sel_o   (snk.sel),
+              .src_cyc_o   (snk.cyc),
+              .src_stb_o   (snk.stb),
+              .src_we_o    (snk.we),
+              .src_stall_i (snk.stall),
+              .src_ack_i   (snk.ack),
+              .src_err_i(1'b0),
+
+              .snk_dat_i   (src.dat_o[15:0]),
+              .snk_adr_i   (src.adr[1:0]),
+              .snk_sel_i   (src.sel[1:0]),
+              .snk_cyc_i   (src.cyc),
+              .snk_stb_i   (src.stb),
+              .snk_we_i    (src.we),
+              .snk_stall_o (src.stall),
+              .snk_ack_o   (src.ack),
+              .snk_err_o   (src.err),
+              .snk_rty_o   (src.rty),
+
+              .txtsu_ack_i (1'b1),
+
+              .rtu_full_i (1'b0),
+              .rtu_almost_full_i (1'b0),
+              .rtu_rq_strobe_p1_o  (),
+              .rtu_rq_smac_o  (),
+              .rtu_rq_dmac_o (),
+              .rtu_rq_vid_o  (),
+              .rtu_rq_has_vid_o (),
+              .rtu_rq_prio_o (),
+              .rtu_rq_has_prio_o (),
+
+              .wb_cyc_i(sys.cyc),
+              .wb_stb_i (sys.stb),
+              .wb_we_i (sys.we),
+              .wb_sel_i(sys.sel),
+              .wb_adr_i(sys.adr[7:0]),
+              .wb_dat_i(sys.dat_o),
+              .wb_dat_o(sys.dat_i),
+              .wb_ack_o (sys.ack)
+    );
+
+endmodule // endpoint_phy_wrapper
diff --git a/samples/SystemVerilog/fifo.sv b/samples/SystemVerilog/fifo.sv
new file mode 100644
index 00000000..6406bc32
--- /dev/null
+++ b/samples/SystemVerilog/fifo.sv
@@ -0,0 +1,7 @@
+module fifo (
+    input           clk_50,
+    input           clk_2,
+    input           reset_n,
+    output [7:0]    data_out,
+    output          empty
+);
diff --git a/samples/SystemVerilog/priority_encoder.sv b/samples/SystemVerilog/priority_encoder.sv
new file mode 100644
index 00000000..614b11d5
--- /dev/null
+++ b/samples/SystemVerilog/priority_encoder.sv
@@ -0,0 +1,18 @@
+// http://hdlsnippets.com/parameterized_priority_encoder
+module priority_encoder #(parameter INPUT_WIDTH=8,OUTPUT_WIDTH=3)
+(
+ input  logic [INPUT_WIDTH-1:0]  input_data,
+ output logic [OUTPUT_WIDTH-1:0] output_data
+);
+ 
+int ii;
+ 
+always_comb
+begin
+  output_data = 'b0;
+	for(ii=0;ii<INPUT_WIDTH;ii++)
+		if (input_data[ii])
+			output_data = ii[OUTPUT_WIDTH-1:0];
+end
+
+endmodule
diff --git a/samples/SystemVerilog/util.vh b/samples/SystemVerilog/util.vh
new file mode 100644
index 00000000..d7c510b3
--- /dev/null
+++ b/samples/SystemVerilog/util.vh
@@ -0,0 +1,8 @@
+function integer log2;
+  input integer x;
+  begin
+    x = x-1;
+    for (log2 = 0; x > 0; log2 = log2 + 1)
+      x = x >> 1;
+  end
+endfunction
diff --git a/samples/Tcl/stream-0.1.tm b/samples/Tcl/stream-0.1.tm
new file mode 100644
index 00000000..24510d07
--- /dev/null
+++ b/samples/Tcl/stream-0.1.tm
@@ -0,0 +1,201 @@
+# A stream ensemble
+#
+# Copyright (c) 2013 Lawrence Woodman <lwoodman@vlifesystems.com>
+#
+# Licensed under an MIT licence.  Please see LICENCE.md for details.
+#
+
+package require Tcl 8.5
+
+namespace eval stream {
+  namespace export {[a-z]*}
+  namespace ensemble create
+}
+
+proc stream::create {first restCmdPrefix} {
+  return [list $first $restCmdPrefix]
+}
+
+proc stream::first {stream} {
+  lassign $stream first
+  return $first
+}
+
+proc stream::foldl {cmdPrefix initialValue args} {
+  set numStreams [llength $args]
+  if {$numStreams == 1} {
+    FoldlSingleStream $cmdPrefix $initialValue [lindex $args 0]
+  } elseif {$numStreams > 1} {
+    FoldlMultiStream $cmdPrefix $initialValue $args
+  } else {
+    Usage "stream foldl cmdPrefix initalValue stream ?stream ..?"
+  }
+}
+
+proc stream::foreach {args} {
+  set numArgs [llength $args]
+  if {$numArgs == 3} {
+    lassign $args varName stream body
+    ForeachSingleStream $varName $stream $body
+  } elseif {($numArgs > 3) && (($numArgs % 2) == 1)} {
+    set body [lindex $args end]
+    set items [lrange $args 0 end-1]
+    ForeachMultiStream $items $body
+  } else {
+    Usage "stream foreach varName stream ?varName stream ..? body"
+  }
+}
+
+proc stream::fromList {_list {index 0}} {
+  if {$index >= [llength $_list]} {return {}}
+  create [lindex $_list $index] [list fromList $_list [expr {$index + 1}]]
+}
+
+proc stream::isEmpty {stream} {
+  expr {[llength $stream] == 0}
+}
+
+proc stream::map {cmdPrefix args} {
+  set numArgs [llength $args]
+  if {$numArgs == 1} {
+    MapSingleStream $cmdPrefix [lindex $args 0]
+  } elseif {$numArgs > 1} {
+    MapMultiStream $cmdPrefix $args
+  } else {
+    Usage "stream map cmdPrefix stream ?stream ..?"
+  }
+}
+
+proc stream::rest {stream} {
+  set rest [lindex $stream 1]
+  {*}$rest
+}
+
+# Note: This will work through the elements of the stream until it finds
+# the first element that is matched by the cmdPrefix predicate.
+proc stream::select {cmdPrefix stream} {
+  while {![isEmpty $stream]} {
+    lassign $stream first rest
+    if {[{*}$cmdPrefix $first]} {
+      return [create $first [list select $cmdPrefix [{*}$rest]]]
+    } else {
+      set stream [{*}$rest]
+    }
+  }
+  return $stream
+}
+
+proc stream::take {num stream} {
+  if {[isEmpty $stream] || $num <= 0} {
+    return [::list]
+  } else {
+    lassign $stream first rest
+    create $first [list take [expr {$num - 1}] [{*}$rest]]
+  }
+}
+
+proc stream::toList {stream} {
+  set res [::list]
+  while {![isEmpty $stream]} {
+    lassign $stream first rest
+    lappend res $first
+    set stream [{*}$rest]
+  }
+  return $res
+}
+
+
+#################################
+#           Internal
+#################################
+
+proc stream::FoldlSingleStream {cmdPrefix initialValue stream} {
+  set acc $initialValue
+  while {![isEmpty $stream]} {
+    lassign $stream first rest
+    set acc [{*}$cmdPrefix $acc $first]
+    set stream [{*}$rest]
+  }
+  return $acc
+}
+
+proc stream::FoldlMultiStream {cmdPrefix initialValue streams} {
+  set acc $initialValue
+
+  while 1 {
+    set firsts [::list]
+    set restStreams [::list]
+    ::foreach stream $streams {
+      if {[isEmpty $stream]} {
+        return $acc
+      }
+      lassign $stream first rest
+      lappend firsts $first
+      lappend restStreams [{*}$rest]
+    }
+    set acc [{*}$cmdPrefix $acc {*}$firsts]
+    set streams $restStreams
+  }
+  return $acc
+}
+
+proc stream::ForeachSingleStream {varName stream body} {
+  set res {}
+  while {![isEmpty $stream]} {
+    lassign $stream first rest
+    uplevel 2 [list set $varName $first]
+    set stream [{*}$rest]
+    set res [uplevel 2 $body]
+  }
+  return $res
+}
+
+proc stream::ForeachMultiStream {items body} {
+  set res {}
+
+  while 1 {
+    set nextItems [::list]
+    ::foreach {varName stream} $items {
+      if {[isEmpty $stream]} {
+        return $res
+      }
+      lassign $stream first rest
+      uplevel 2 [list set $varName $first]
+      lappend nextItems $varName
+      lappend nextItems [{*}$rest]
+    }
+    set res [uplevel 2 $body]
+    set items $nextItems
+  }
+
+  return $res
+}
+
+proc stream::MapSingleStream {cmdPrefix stream} {
+  if {[isEmpty $stream]} {
+    return $stream
+  }
+  lassign $stream first rest
+  create [{*}$cmdPrefix $first] [list MapSingleStream $cmdPrefix [{*}$rest]]
+}
+
+proc stream::MapMultiStream {cmdPrefix streams} {
+  set firsts [::list]
+  set restStreams [::list]
+
+  ::foreach stream $streams {
+    if {[isEmpty $stream]} {
+      return $stream
+    }
+    lassign $stream first rest
+    lappend firsts $first
+    lappend restStreams [{*}$rest]
+  }
+
+  return [create [{*}$cmdPrefix {*}$firsts] \
+                 [list MapMultiStream $cmdPrefix $restStreams]]
+}
+
+proc stream::Usage {msg} {
+  return -code error -level 2 "wrong # args: should be \"$msg\""
+}
diff --git a/samples/Tcl/xdgbasedir-0.3.tm b/samples/Tcl/xdgbasedir-0.3.tm
new file mode 100644
index 00000000..cc5cd8a6
--- /dev/null
+++ b/samples/Tcl/xdgbasedir-0.3.tm
@@ -0,0 +1,76 @@
+# XDG Base Directory Specification handling
+#
+# Copyright (C) 2013 Lawrence Woodman
+#
+# Licensed under an MIT licence.  Please see LICENCE.md for details.
+#
+# For XDG Base Directory Specification
+#   http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html
+#
+package require Tcl 8.5
+
+namespace eval XDG {
+  variable DEFAULTS ""
+  namespace export DATA_HOME CONFIG_HOME CACHE_HOME
+  namespace export RUNTIME_DIR DATA_DIRS CONFIG_DIRS
+}
+
+proc XDG::SetDefaults {} {
+  variable DEFAULTS
+  if {$DEFAULTS ne ""} return
+  set DEFAULTS [list \
+    DATA_HOME   [file join $::env(HOME) .local share] \
+    CONFIG_HOME [file join $::env(HOME) .config] \
+    CACHE_HOME  [file join $::env(HOME) .cache] \
+    DATA_DIRS   [list [file join /usr local share] [file join /usr share]] \
+    CONFIG_DIRS [list [file join /etc xdg ]]
+  ]
+}
+
+proc XDG::XDGVarSet {var} {
+  expr {[info exists ::env(XDG_$var)] && $::env(XDG_$var) ne ""}
+}
+
+proc XDG::Dir {var {subdir ""} } {
+  variable DEFAULTS
+  SetDefaults
+  set dir [dict get $DEFAULTS $var]
+
+  if {[XDGVarSet $var]} {
+    set dir $::env(XDG_$var)
+  }
+
+  return [file join $dir $subdir]
+}
+
+proc XDG::Dirs {var {subdir ""} } {
+  variable DEFAULTS
+  SetDefaults
+  set rawDirs [dict get $DEFAULTS $var]
+
+  if {[XDGVarSet $var]} {
+    set rawDirs [split $::env(XDG_$var) ":"]
+  }
+
+  set outDirs {}
+  foreach dir $rawDirs {
+    lappend outDirs [file join $dir $subdir]
+  }
+  return $outDirs
+}
+
+# The remaining procs reference the environmental variables XDG_
+# followed by the proc name.
+proc XDG::DATA_HOME {{subdir ""}} {Dir DATA_HOME $subdir}
+proc XDG::CONFIG_HOME {{subdir ""}} {Dir CONFIG_HOME $subdir}
+proc XDG::CACHE_HOME {{subdir ""}} {Dir CACHE_HOME $subdir}
+
+proc XDG::RUNTIME_DIR {{subdir ""}} {
+  if {![XDGVarSet RUNTIME_DIR]} { return {} }
+  return [file join $::env(XDG_RUNTIME_DIR) $subdir]
+}
+
+# The following procs returning the directories as a list with the most
+# important first.
+proc XDG::DATA_DIRS {{subdir ""}} {Dirs DATA_DIRS $subdir}
+proc XDG::CONFIG_DIRS {{subdir ""}} {Dirs CONFIG_DIRS $subdir}
diff --git a/samples/TeX/problemset.cls b/samples/TeX/problemset.cls
new file mode 100644
index 00000000..6add7189
--- /dev/null
+++ b/samples/TeX/problemset.cls
@@ -0,0 +1,380 @@
+% =====================================
+% problemset Document Style
+%   For Problem Sets
+%
+% Options:
+% final      hides to-dos
+% worksheet  hides solutions and places each problem on separate page
+% expand     places each problem on a separate page
+% =====================================
+
+\ProvidesClass{problemset}
+\DeclareOption*{\PassOptionsToClass{final}{article}}
+\DeclareOption{worksheet}{\providecommand{\@solutionvis}{0}}
+\DeclareOption{expand}{\providecommand{\@expand}{1}}
+\ProcessOptions\relax
+
+% ================== Packages and Document Options ==================
+\LoadClass[10pt,letterpaper]{article}
+\RequirePackage[%
+        top=0.85in,
+        bottom=1in,
+        left=1in,
+        right=1in
+        ]{geometry}
+\RequirePackage{pgfkeys}    % For mathtable environment.
+\RequirePackage{tabularx}   % For pset heading
+\RequirePackage{float}      % Used for floats (tables, figures, etc.)
+\RequirePackage{graphicx}   % Used for inserting images.
+\RequirePackage{enumerate}  % Used for the enumerate environment.
+\RequirePackage{mathtools}  % Required. Loads amsmath.
+\RequirePackage{amsthm}     % Required. Used for theorem environments.
+\RequirePackage{amssymb}    % Required.
+\RequirePackage{booktabs}   % Required. Used for mathtable environment.
+\RequirePackage{esdiff}     % For derivatives and partial derivatives
+\RequirePackage{mathtools}  % Optional. Used for \shortintertext.
+\RequirePackage{fancyhdr}   % Required. For customizing headers/footers.
+\RequirePackage{lastpage}   % Required. For page count in header/footer.
+\RequirePackage{xcolor}     % Required. For setting the color of hyperlinks
+\RequirePackage[%
+        obeyFinal,          % Disable todos by setting [final] option for class
+        color=@todoclr,
+        linecolor=red
+        ]{todonotes}        % For keeping track of to-dos.
+\RequirePackage[%
+        colorlinks=true,
+        linkcolor=navy,
+        urlcolor=black
+        ]{hyperref}         % For following urls and references in a document.
+\RequirePackage{url}        % Enables urls with the \url tag
+\RequirePackage[all]{hypcap}
+% hypcap: Links go to object instead of caption. [Keep as last package]
+
+% ==================   Appearance Settings   ==================
+\definecolor{@todoclr}{gray}{0.80}   % For To-Dos. 50% brightness
+\definecolor{navy}{RGB}{0,0,150}     % For coloring hyperlinks
+\setlength{\parskip}{1.5ex}          % Sets space between paragraphs.
+\setlength{\parindent}{0pt}          % Indent for first line of new paragraphs.
+
+% Smaller verbatim type size
+\let\VERBATIM\verbatim
+\def\verbatim{%
+  \def\verbatim@font{\small\ttfamily}%
+\VERBATIM}
+
+% =============   Caption Modifications   =============
+\usepackage[small]{caption}
+\usepackage[footnotesize]{subcaption}
+    % For no visible number, use: \caption*{Unnumbered figure caption.}
+\captionsetup[table]{labelformat=simple, labelsep=period, labelfont=bf}
+\captionsetup[figure]{labelformat=simple, labelsep=period, labelfont=bf}
+\captionsetup[subtable]{labelformat=parens, labelsep=space, labelfont=bf}
+\captionsetup[subfigure]{labelformat=simple, labelsep=period, labelfont=bf}
+
+% ==================     Booleans     ==================
+\def\TRUE{1}
+\def\FALSE{0}
+\def\SHOW{1}
+\def\HIDE{0}
+
+% ============= Gets Document Info, Generates Heading =============
+\providecommand{\heading}[5][]{
+  \thispagestyle{empty}
+  \listoftodos
+  \clearpage
+  \pagenumbering{arabic}
+  %
+  \providecommand{\shortname}{#1}
+  \providecommand{\authorname}{#2}
+  \providecommand{\coursename}{#3}
+  \providecommand{\assignment}{#4}
+  \providecommand{\duedate}{#5}
+  \begin{minipage}{0.5\textwidth}
+    \begin{flushleft}
+      \hypertarget{@assignment}{
+        \textbf{\assignment}
+      }\\
+      \authorname
+    \end{flushleft}
+  \end{minipage}
+  \begin{minipage}{0.5\textwidth}
+    \begin{flushright}
+      \coursename\\
+      \duedate\\
+    \end{flushright}
+  \end{minipage}
+  \thispagestyle{empty}
+}
+
+% ============= Headers and Footers =============
+\renewcommand{\headrulewidth}{0pt}
+\renewcommand{\footrulewidth}{0.5pt}
+\pagestyle{fancyplain}
+\fancyhf{}
+\lfoot{%
+\fancyplain{}{%
+  \hyperlink{@assignment}{%
+    \small{%
+      \color{black}{%
+        \assignment
+      }
+    }
+  }
+}
+}
+\cfoot{%
+\fancyplain{}{%
+    \small{%
+      \coursename
+    }
+}
+}
+\rfoot{%
+\fancyplain{}{%
+  \small{\shortname~\thepage~of~\pageref{LastPage}}
+}
+}
+
+% ============= Problem Command =============
+% INPUT: Points for question [#1] (Optional)
+\newcounter{theproblem} % Problem counter for environment
+
+\providecommand{\problem}[1][]{%
+  \addtocounter{theproblem}{1}%
+  \setcounter{table}{0}%
+  \setcounter{figure}{0}%
+  \setcounter{equation}{0}%
+  \noindent%
+  \textbf{%
+      Problem~\arabic{theproblem}.}~\textit{\small{#1}}
+
+}
+
+% ============= QED, Page Breaks After QED? =============
+\providecommand{\@expand}{\HIDE}  % Default is to omit pagebreaks after the solution
+\providecommand{\qqed}{\hfill\rule{2mm}{2mm}\ifnum\@expand=\SHOW\\\pagebreak\fi}
+
+
+% ============= Solution Command =============
+\providecommand{\@solutionvis}{1}  % Default setting is to show solutions.
+\providecommand{\solution}[2][\@solutionvis]{
+\vspace{0.5em}\noindent\textbf{Solution.}
+\ifnum#1=\SHOW%
+#2
+
+\hfill\qqed\vspace{0.1em}
+\else%
+\pagebreak%
+\fi
+}
+
+% ============= Chapter, Section, Item Commands =============
+\providecommand{\chap}[2][0]{
+\ifnum#1=0%
+\else%
+\setcounter{section}{#1}%
+\addtocounter{section}{-1}%
+\fi%
+\vspace{-1.75em}%
+\section{#2}
+}
+
+\providecommand{\sect}[2][0]{
+\ifnum#1=0%
+\else%
+\setcounter{subsection}{#1}%
+\addtocounter{subsection}{-1}%
+\fi%
+\vspace{-0.5em}%
+\subsection{#2}
+}
+
+\providecommand{\subsect}[1]{\noindent\textbf{#1.}}
+
+% ============= Insert Non-Float Image =============
+\providecommand{\insertgraphic}[2][0.5\textwidth]{
+\vspace{-1em}
+\begin{center}
+  \includegraphics[width=#1]{#2}
+\end{center}
+\vspace{-1em}
+}
+
+
+
+% ============= Object Numbering by Problem =============
+\renewcommand{\thetable}{\arabic{theproblem}.\arabic{table}}
+\renewcommand{\thefigure}{\arabic{theproblem}.\arabic{figure}}
+\renewcommand{\theequation}{\arabic{theproblem}.\arabic{equation}}
+
+
+% ============= Formula Environment =============
+\newcounter{formula}
+\newenvironment{formula}[1][Formula \arabic{formula}]
+{
+  \addtocounter{formula}{1}
+  \begin{displaymath}
+  \tag*{\parbox{5em}{\textbf{\small{#1}}}}
+}{
+  \end{displaymath}\\
+}
+
+% ============= Math Table =============
+\newif\ifcaption
+\pgfkeys
+{
+  /mypkg/title/.store in=\Caption,% Any value assigned to title will be stored in \Caption
+  /mypkg/title= ,              % Initialize so \Caption exists
+   /mypkg/label/.store in=\Label,  % Any value assigned to label will be stored in \Label
+   /mypkg/label= ,              % Initialize so \Label exists
+   /mypkg/caption/.is if=caption,  % Declare a boolean, defaults to false
+}
+\newenvironment{mathtable}[2][]{
+  \pgfkeys{/mypkg/.cd, #1}%
+  \vspace{-1em}%
+  \begin{table}[ht!]%
+  \small \begin{center}%
+  \begin{displaymath}%
+  \begin{array}{#2}%
+  \toprule
+}{
+  \bottomrule
+  \end{array}%
+  \end{displaymath}%
+  \ifcaption%
+  \vspace{-1em}\caption{\Caption}\label{\Label}%
+  \fi%
+  \end{center}%
+  \end{table}%
+  \vspace{-1em}%
+}
+
+
+% ============= Double-line Column-Heading for table =============
+\providecommand{\double}[2]{%
+  \multicolumn{1}{c}{%
+    \genfrac{}{}{0pt}{}{\text{#1}}{\text{#2}}
+  }
+}
+
+
+% ============= Theorem-Style Environments =============
+\theoremstyle{plain}          % Bold label, italic letters
+\newtheorem{thm}{Theorem}[section]    % Numbered by section
+\newtheorem{lma}[thm]{Lemma}
+\newtheorem{crl}[thm]{Corollary}
+\newtheorem{prp}[thm]{Proposition}
+\newtheorem{cnj}[thm]{Conjecture}
+\newtheorem{alg}[thm]{Algorithm}
+
+% Associated environments (for numbered theorem environments)
+\newenvironment{theorem}[2][]{\begin{thm}[#1]\label{#2}}{\end{thm}}
+\newenvironment{lemma}[2][]{\begin{lma}[#1]\label{#2}}{\end{lma}}
+\newenvironment{corollary}[2][]{\begin{crl}[#1]\label{#2}}{\end{thm}}
+\newenvironment{proposition}[2][]{\begin{prp}[#1]\label{#2}}{\end{crl}}
+\newenvironment{conjecture}[2][]{\begin{cnj}[#1]\label{#2}}{\end{cnj}}
+\newenvironment{algorithm}[2][]{\begin{alg}[#1]\label{#2}}{\end{alg}}
+
+\theoremstyle{remark}          % Italic label, roman letters
+\newtheorem{rmk}{Remark}[section]    % Numbered by section. Remarks are used to expand on and integrate material.
+\newtheorem*{note}{Note}        % Un-numbered. Notes are used to comment on specific elements of the material.
+\newtheorem*{caveat}{Caveat}      % Un-numbered. Caveats are used to guide the reader away from a common error.
+\newtheorem*{warning}{Warning}      % Un-numbered. Warnings are used to guide away from especially egregious errors.
+
+\theoremstyle{definition}        % Bold label, roman letters
+\newtheorem{dfn}{Definition}[section]  % Numbered by section. Definitions of concepts and terms.
+\newtheorem{exm}{Example}[section]    % Numbered by section. Illustrative examples.
+\newtheorem{smm}{Summary}[subsection]  % Numbered by subsection. For section summaries.
+\newtheorem*{question}{Question}    % Un-numbered. For questions to motivate further analysis.
+\newtheorem*{speculation}{Speculation}  % Un-numbered. For questions that arise but will not be immediately answered.
+
+% Associated environments (for numbered theorem environments)
+\newenvironment{remark}[2][]{\begin{rmk}[#1]\label{#2}}{\end{rmk}}
+\newenvironment{definition}[2][]{\begin{dfn}[#1]\label{#2}}{\end{dfn}}
+\newenvironment{example}[2][]{\begin{exm}[#1]\label{#2}}{\end{exm}}
+\newenvironment{summary}[2][]{\begin{smm}[#1]\label{#2}}{\end{smm}}
+
+
+% ============= Greek Letters =============
+\renewcommand{\a}{\ensuremath{\alpha}}
+\renewcommand{\b}{\ensuremath{\beta}}
+\renewcommand{\c}{\ensuremath{\gamma}}
+\newcommand{\ch}{\ensuremath{\chi}}
+\renewcommand{\d}{\ensuremath{\delta}}
+\newcommand{\ep}{\ensuremath{\epsilon}}
+\newcommand{\et}{\ensuremath{\eta}}
+\newcommand{\ve}{\ensuremath{\varepsilon}}
+\renewcommand{\r}{\ensuremath{\rho}}
+\newcommand{\s}{\ensuremath{\sigma}}
+\renewcommand{\t}{\ensuremath{\tau}}
+\newcommand{\f}{\ensuremath{\psi}}
+\newcommand{\w}{\ensuremath{\omega}}
+\newcommand{\h}{\ensuremath{\phi}}
+\newcommand{\m}{\ensuremath{\mu}}
+\renewcommand{\l}{\ensuremath{\lambda}}
+\renewcommand{\k}{\ensuremath{\kappa}}
+\renewcommand{\v}{\ensuremath{\nu}}
+\renewcommand{\i}{\ensuremath{\iota}}
+\renewcommand{\o}{\ensuremath{\theta}}
+\newcommand{\z}{\ensuremath{\zeta}}
+
+% ============= Mathematical Symbols =============
+\providecommand{\NN}{\ensuremath{\mathbb{N}}}
+\providecommand{\ZZ}{\ensuremath{\mathbb{Z}}}
+\providecommand{\QQ}{\ensuremath{\mathbb{Q}}}
+\providecommand{\RR}{\ensuremath{\mathbb{R}}}
+\providecommand{\CC}{\ensuremath{\mathbb{C}}}
+\providecommand{\pd}{\partial}    % 'dee' symbol for partial derivatives
+\providecommand{\dd}{\mathrm{d}} % 'dee' symbol for ordinary derivatives
+\providecommand{\x}{\times}
+\providecommand{\n}{\scalebox{0.6}[1.0]{\ensuremath{-}}}
+
+
+
+% ============= Mathematical Macros =============
+\providecommand{\Sum}[3][n]{\ensuremath{\sum_{{#1}={#2}}^{#3}}}     % Sum from [n]={1}to{2}.     \Sum{1}{10}
+\providecommand{\infsum}[2][n]{\ensuremath{\sum_{{#1}={#2}}^\infty}}  % Infinite sum from [n]={1}    \infsum{1}
+\providecommand{\Int}[4][x]{\ensuremath{\int_{#3}^{#4}\!{#2}\,\mathrm{d}{#1}}}   % Integrate {1} from {2} to {3} with respect to [x]
+\providecommand{\Lim}[3][\infty]{\ensuremath{\displaystyle \lim_{{#2}\to{#1}}\!\!{#3}}} % Take the limit from {1} to [infinity] of {3} \Lim{x}{f(x)}
+\providecommand{\Frac}[2]{\ensuremath{\,^{#1}\!/\!_{#2}}}            % Slanted fraction with proper spacing. Usefule for in-line display of fractions.
+\providecommand{\eval}[3]{\ensuremath{\left[ #1 \right \vert_{#2}^{#3}}}
+\renewcommand{\L}{\left}              % for left-hand right-sizing
+\providecommand{\R}{\right}            % for right-hand right-sizing
+\providecommand{\D}{\diff}            % for writing derivatives
+\providecommand{\PD}{\diffp}          % for writing partial derivatives
+\providecommand{\full}{\displaystyle}      % Forces display style in math mode
+\providecommand{\Deg}{\ensuremath{^\circ}}    % for adding a degree symbol, even if not in math mode
+\providecommand{\abs}[1]{\left\vert #1 \right\vert}   % Absolute Value
+\providecommand{\norm}[1]{\left \Vert #1 \right \Vert}  % Norm (vector magnitude)
+\providecommand{\e}[1]{\ensuremath{\times 10^{#1}}}    % Scientific Notation with times symbol
+\providecommand{\E}[1]{\ensuremath{10^{#1}}}  % Scientific Notation
+\renewcommand{\u}[1]{\text{ #1}}        % For inserting units in Roman text
+\providecommand{\mc}{\text{,}\hspace{1em}}    % For inserting comma and space into math mode
+\providecommand{\mtxt}[2][]{#1\hspace{0.5em}\text{#2}\hspace{0.5em}}  % For insterting text into math mode with space on either side. Option for preceding punctuation.
+
+% ============= Probability and Statistics =============
+\providecommand{\prob}[1]{\ensuremath{P\!\left(#1\right)} }
+\providecommand{\cndprb}[2]{\ensuremath{P\!\left(#1 \left\vert  #2 \right.  \right)} }
+\providecommand{\cov}[1]{\ensuremath{\text{Cov}\!\left(#1\right)} }
+\providecommand{\ex}[1]{\ensuremath{E\!\left[#1\right]} }
+
+% ============= Linear Algebra =============
+
+% Column vectors
+\providecommand{\twovector}[3][r]{\left(\begin{array}{#1} #2 \\ #3\end{array}\right)}
+\providecommand{\threevector}[4][r]{\left(\begin{array}{#1}  #2 \\ #3 \\ #4\end{array}\right)}
+\providecommand{\fourvector}[5][r]{\left(\begin{array}{#1}  #2 \\ #3 \\ #4 \\ #5 \end{array}\right)}
+
+% ============= Vector Calculus =============
+% ------------- Susan Lea's notation ---------------
+\providecommand{\vecs}[1]{\ensuremath{\vec{\bm{#1}}} }  % bolded symbol, arrow
+\providecommand{\vect}[1]{\ensuremath{\vec{\textbf{#1}}} }  % bolded text, arrow
+\providecommand{\unitvecs}[1]{\bm{\hat{#1}}}
+\providecommand{\unitvect}[1]{\hat{\textbf{#1}}}
+\providecommand{\Div}[1]{\vecs{\del} \cdot \vect{#1}}
+\providecommand{\Curl}[1]{\vecs{\del} \times \vect{#1}}
+\providecommand{\Grad}{\vecs{\del}}
+
+
+
+
diff --git a/samples/Text/ISO-2022-KR.txt b/samples/Text/ISO-2022-KR.txt
new file mode 100644
index 00000000..721d7051
--- /dev/null
+++ b/samples/Text/ISO-2022-KR.txt
@@ -0,0 +1,43 @@
+$)C#
+# Out-AnsiGraph.psm1
+# Author:       xcud
+# History:
+#       v0.1 September 21, 2009 initial version
+#
+# PS Example> ps | select -first 5 | sort -property VM | 
+#             Out-AnsiGraph ProcessName, VM
+#                 AEADISRV  14508032
+#                  audiodg  50757632
+#                  conhost  73740288
+# AppleMobileDeviceService  92061696
+#                    btdna  126443520
+#
+function Out-AnsiGraph($Parameter1=$null) {
+	BEGIN {
+		$q = new-object Collections.queue
+		$max = 0; $namewidth = 0;
+	}
+
+	PROCESS {
+		if($_) {
+			$name = $_.($Parameter1[0]);
+			$val = $_.($Parameter1[1])
+			if($max -lt $val) { $max = $val}		 
+			if($namewidth -lt $name.length) { 
+				$namewidth = $name.length }
+			$q.enqueue(@($name, $val))			
+		}
+	}
+
+	END {
+		$q | %{
+			$graph = ""; 0..($_[1]/$max*20) | 
+				%{ $graph += "" }
+			$name = "{0,$namewidth}" -f $_[0]
+			"$name $graph " + $_[1]
+		}
+
+	}
+}
+
+Export-ModuleMember Out-AnsiGraph
\ No newline at end of file
diff --git a/samples/Text/Visual_Battlers.rb b/samples/Text/Visual_Battlers.rb
new file mode 100644
index 00000000..74bb0f2c
--- /dev/null
+++ b/samples/Text/Visual_Battlers.rb
@@ -0,0 +1,703 @@
+#==============================================================================
+# 
+# �� Yanfly Engine Ace - Visual Battlers v1.01
+# -- Last Updated: 2012.07.24
+# -- Level: Easy
+# -- Requires: n/a
+#
+# �� Modified by:
+# -- Yami
+# -- Kread-Ex
+# -- Archeia_Nessiah
+#==============================================================================
+
+$imported = {} if $imported.nil?
+$imported["YEA-VisualBattlers"] = true
+
+#==============================================================================
+# �� Updates
+# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+# 2012.12.18 - Added preset views and able to change direction in-game.
+# 2012.07.24 - Finished Script.
+# 2012.01.05 - Started Script.
+# 
+#==============================================================================
+# �� Introduction
+# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+# This script provides a visual for all actors by default charsets. The actions
+# and movements are alike Final Fantasy 1, only move forward and backward when 
+# start and finish actions.
+# 
+#==============================================================================
+# �� Instructions
+# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+# To change the player direction in-game, use the snippet below in a script 
+# call: 
+# 
+# $game_system.party_direction = n
+#
+# To install this script, open up your script editor and copy/paste this script
+# to an open slot below �� Materials but above �� Main. Remember to save.
+# 
+#==============================================================================
+# �� Compatibility
+# =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+# This script is made strictly for RPG Maker VX Ace. It is highly unlikely that
+# it will run with RPG Maker VX without adjusting.
+# 
+#==============================================================================
+
+module YEA
+  module VISUAL_BATTLERS
+    
+    #=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+    # - Party Location Setting -
+    #=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+    # These settings are adjusted for Party Location. Each Actor will have
+    # coordinates calculated by below formula. There are two samples coordinates
+    # below, change PARTY_DIRECTION to the base index you want to use.
+    #=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
+    PARTY_DIRECTION = 6 # This direction is opposite from actual direction.
+    
+    PARTY_LOCATION_BASE_COORDINATES ={
+    # Index => [base_x, base_y, mod_x, mod_y],
+          2 => [   250,    290,    40,     0], #UP
+          4 => [   150,    280,    20,   -20], #LEFT
+          3 => [   460,    280,    30,   -10], #RIGHT
+          6 => [   460,    230,    20,    20], #DEFAULT RIGHT
+          8 => [   260,    230,    40,     0], #DOWN
+    } # Do not remove this.
+    
+    PARTY_LOCATION_FORMULA_X = "base_x + index * mod_x"
+    PARTY_LOCATION_FORMULA_Y = "base_y + index * mod_y"
+    
+  end # VISUAL_BATTLERS
+end # YEA
+
+#==============================================================================
+#  ��  Editting anything past this point may potentially result in causing
+# computer damage, incontinence, explosion of user's head, coma, death, and/or
+# halitosis so edit at your own risk.
+#==============================================================================
+
+#==============================================================================
+# ? ��  Direction
+#==============================================================================
+
+module Direction
+  
+  #--------------------------------------------------------------------------
+  # self.correct
+  #--------------------------------------------------------------------------
+  def self.correct(direction)
+    case direction
+    when 1; return 4
+    when 3; return 6
+    when 7; return 4
+    when 9; return 6
+    else; return direction
+    end
+  end
+  
+  #--------------------------------------------------------------------------
+  # self.opposite
+  #--------------------------------------------------------------------------
+  def self.opposite(direction)
+    case direction
+    when 1; return 6
+    when 2; return 8
+    when 3; return 4
+    when 4; return 6
+    when 6; return 4
+    when 7; return 6
+    when 8; return 2
+    when 9; return 4
+    else; return direction
+    end
+  end
+  
+end # Direction
+
+#==============================================================================
+# ? ��  Game_System
+#==============================================================================
+
+class Game_System; attr_accessor :party_direction; end
+
+#==============================================================================
+# ? ��  Game_BattleCharacter
+#==============================================================================
+
+class Game_BattleCharacter < Game_Character
+  
+  #--------------------------------------------------------------------------
+  # initialize
+  #--------------------------------------------------------------------------
+  def initialize(actor)
+    super()
+    setup_actor(actor)
+    @move_x_rate = 0
+    @move_y_rate = 0
+  end
+  
+  #--------------------------------------------------------------------------
+  # setup_actor
+  #--------------------------------------------------------------------------
+  def setup_actor(actor)
+    @actor = actor
+    @step_anime = true
+    set_graphic(@actor.character_name, @actor.character_index)
+    setup_coordinates
+    dr = $game_system.party_direction || YEA::VISUAL_BATTLERS::PARTY_DIRECTION
+    direction = Direction.opposite(dr)
+    set_direction(Direction.correct(direction))
+  end
+  
+  #--------------------------------------------------------------------------
+  # sprite=
+  #--------------------------------------------------------------------------
+  def sprite=(sprite)
+    @sprite = sprite
+  end
+  
+  #--------------------------------------------------------------------------
+  # setup_coordinates
+  #--------------------------------------------------------------------------
+  def setup_coordinates
+    location = ($game_system.party_direction ||
+    YEA::VISUAL_BATTLERS::PARTY_DIRECTION)
+    base_x = YEA::VISUAL_BATTLERS::PARTY_LOCATION_BASE_COORDINATES[location][0]
+    base_y = YEA::VISUAL_BATTLERS::PARTY_LOCATION_BASE_COORDINATES[location][1]
+    mod_x = YEA::VISUAL_BATTLERS::PARTY_LOCATION_BASE_COORDINATES[location][2]
+    mod_y = YEA::VISUAL_BATTLERS::PARTY_LOCATION_BASE_COORDINATES[location][3]
+    @actor.screen_x = eval(YEA::VISUAL_BATTLERS::PARTY_LOCATION_FORMULA_X)
+    @actor.screen_y = eval(YEA::VISUAL_BATTLERS::PARTY_LOCATION_FORMULA_Y)
+    @actor.origin_x = @actor.screen_x
+    @actor.origin_y = @actor.screen_y
+    @actor.create_move_to(screen_x, screen_y, 1)
+  end
+  
+  #--------------------------------------------------------------------------
+  # index
+  #--------------------------------------------------------------------------
+  def index
+    return @actor.index
+  end
+  
+  #--------------------------------------------------------------------------
+  # screen_x
+  #--------------------------------------------------------------------------
+  def screen_x
+    return @actor.screen_x
+  end
+  
+  #--------------------------------------------------------------------------
+  # screen_y
+  #--------------------------------------------------------------------------
+  def screen_y
+    return @actor.screen_y
+  end
+  
+  #--------------------------------------------------------------------------
+  # screen_z
+  #--------------------------------------------------------------------------
+  def screen_z
+    return @actor.screen_z
+  end
+  
+end # Game_BattleCharacter
+
+#==============================================================================
+# ? ��  Game_Battler
+#==============================================================================
+
+class Game_Battler < Game_BattlerBase
+  
+  #--------------------------------------------------------------------------
+  # public instance variables
+  #--------------------------------------------------------------------------
+  attr_accessor :moved_back
+  attr_accessor :origin_x
+  attr_accessor :origin_y
+  attr_accessor :screen_x
+  attr_accessor :screen_y
+  attr_accessor :started_turn
+  
+  #--------------------------------------------------------------------------
+  # alias method: execute_damage
+  #--------------------------------------------------------------------------
+  alias game_battler_execute_damage_vb execute_damage
+  def execute_damage(user)
+    game_battler_execute_damage_vb(user)
+    if @result.hp_damage > 0
+      move_backward(24, 6) unless @moved_back
+      @moved_back = true
+    end
+  end
+  
+  #--------------------------------------------------------------------------
+  # face_opposing_party
+  #--------------------------------------------------------------------------
+  def face_opposing_party
+    direction = ($game_system.party_direction ||
+    YEA::VISUAL_BATTLERS::PARTY_DIRECTION)
+    character.set_direction(Direction.correct(direction)) rescue 0
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: face_coordinate
+  #--------------------------------------------------------------------------
+  def face_coordinate(destination_x, destination_y)
+    x1 = Integer(@screen_x)
+    x2 = Integer(destination_x)
+    y1 = Graphics.height - Integer(@screen_y)
+    y2 = Graphics.height - Integer(destination_y)
+    return if x1 == x2 and y1 == y2
+    #---
+    angle = Integer(Math.atan2((y2-y1),(x2-x1)) * 1800 / Math::PI)
+    if (0..225) === angle or (-225..0) === angle
+      direction = 6
+    elsif (226..675) === angle
+      direction = 9
+    elsif (676..1125) === angle
+      direction = 8
+    elsif (1126..1575) === angle
+      direction = 7
+    elsif (1576..1800) === angle or (-1800..-1576) === angle
+      direction = 4
+    elsif (-1575..-1126) === angle
+      direction = 1
+    elsif (-1125..-676) === angle
+      direction = 2
+    elsif (-675..-226) === angle
+      direction = 3
+    end
+    #---
+    character.set_direction(Direction.correct(direction)) rescue 0
+  end
+  
+  #--------------------------------------------------------------------------
+  # create_move_to
+  #--------------------------------------------------------------------------
+  def create_move_to(destination_x, destination_y, frames = 12)
+    @destination_x = destination_x
+    @destination_y = destination_y
+    frames = [frames, 1].max
+    @move_x_rate = [(@screen_x - @destination_x).abs / frames, 2].max
+    @move_y_rate = [(@screen_y - @destination_y).abs / frames, 2].max
+  end
+  
+  #--------------------------------------------------------------------------
+  # update_move_to
+  #--------------------------------------------------------------------------
+  def update_move_to
+    @move_x_rate = 0 if @screen_x == @destination_x || @move_x_rate.nil?
+    @move_y_rate = 0 if @screen_y == @destination_y || @move_y_rate.nil?
+    value = [(@screen_x - @destination_x).abs, @move_x_rate].min
+    @screen_x += (@destination_x > @screen_x) ? value : -value
+    value = [(@screen_y - @destination_y).abs, @move_y_rate].min
+    @screen_y += (@destination_y > @screen_y) ? value : -value
+  end
+  
+  #--------------------------------------------------------------------------
+  # move_forward
+  #--------------------------------------------------------------------------
+  def move_forward(distance = 24, frames = 12)
+    direction = forward_direction
+    move_direction(direction, distance, frames)
+  end
+  
+  #--------------------------------------------------------------------------
+  # move_backward
+  #--------------------------------------------------------------------------
+  def move_backward(distance = 24, frames = 12)
+    direction = Direction.opposite(forward_direction)
+    move_direction(direction, distance, frames)
+  end
+  
+  #--------------------------------------------------------------------------
+  # move_direction
+  #--------------------------------------------------------------------------
+  def move_direction(direction, distance = 24, frames = 12)
+    case direction
+    when 1; move_x = distance / -2; move_y = distance /  2
+    when 2; move_x = distance *  0; move_y = distance *  1
+    when 3; move_x = distance / -2; move_y = distance /  2
+    when 4; move_x = distance * -1; move_y = distance *  0
+    when 6; move_x = distance *  1; move_y = distance *  0
+    when 7; move_x = distance / -2; move_y = distance / -2
+    when 8; move_x = distance *  0; move_y = distance * -1
+    when 9; move_x = distance /  2; move_y = distance / -2
+    else; return
+    end
+    destination_x = @screen_x + move_x
+    destination_y = @screen_y + move_y
+    create_move_to(destination_x, destination_y, frames)
+  end
+  
+  #--------------------------------------------------------------------------
+  # forward_direction
+  #--------------------------------------------------------------------------
+  def forward_direction
+    return ($game_system.party_direction ||
+    YEA::VISUAL_BATTLERS::PARTY_DIRECTION)
+  end
+  
+  #--------------------------------------------------------------------------
+  # move_origin
+  #--------------------------------------------------------------------------
+  def move_origin
+    create_move_to(@origin_x, @origin_y)
+    face_coordinate(@origin_x, @origin_y)
+    @moved_back = false
+  end
+  
+  #--------------------------------------------------------------------------
+  # moving?
+  #--------------------------------------------------------------------------
+  def moving?
+    return false if dead? || !exist?
+    return @move_x_rate != 0 || @move_y_rate != 0
+  end
+  
+end # Game_Battler
+
+#==============================================================================
+# ? ��  Game_Actor
+#==============================================================================
+
+class Game_Actor < Game_Battler
+  
+  #--------------------------------------------------------------------------
+  # overwrite method: use_sprite?
+  #--------------------------------------------------------------------------
+  def use_sprite?
+    return true
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: screen_x
+  #--------------------------------------------------------------------------
+  def screen_x
+    return @screen_x rescue 0
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: screen_y
+  #--------------------------------------------------------------------------
+  def screen_y
+    return @screen_y rescue 0
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: screen_z
+  #--------------------------------------------------------------------------
+  def screen_z
+    return 100
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: sprite
+  #--------------------------------------------------------------------------
+  def sprite
+    index = $game_party.battle_members.index(self)
+    return SceneManager.scene.spriteset.actor_sprites[index]
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: character
+  #--------------------------------------------------------------------------
+  def character
+    return sprite.character_base
+  end
+  
+  #--------------------------------------------------------------------------
+  # face_opposing_party
+  #--------------------------------------------------------------------------
+  def face_opposing_party
+    dr = $game_system.party_direction || YEA::VISUAL_BATTLERS::PARTY_DIRECTION
+    direction = Direction.opposite(dr)
+    character.set_direction(Direction.correct(direction)) rescue 0
+  end
+  
+  #--------------------------------------------------------------------------
+  # forward_direction
+  #--------------------------------------------------------------------------
+  def forward_direction
+    return Direction.opposite(($game_system.party_direction ||
+    YEA::VISUAL_BATTLERS::PARTY_DIRECTION))
+  end
+  
+end # Game_Actor
+
+#==============================================================================
+# ? ��  Game_Enemy
+#==============================================================================
+
+class Game_Enemy < Game_Battler
+  
+  #--------------------------------------------------------------------------
+  # new method: sprite
+  #--------------------------------------------------------------------------
+  def sprite
+    return SceneManager.scene.spriteset.enemy_sprites.reverse[self.index]
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: character
+  #--------------------------------------------------------------------------
+  def character
+    return sprite
+  end
+  
+end # Game_Enemy
+
+#==============================================================================
+# ? ��  Game_Troop
+#==============================================================================
+
+class Game_Troop < Game_Unit
+  
+  #--------------------------------------------------------------------------
+  # alias method: setup
+  #--------------------------------------------------------------------------
+  alias game_troop_setup_vb setup
+  def setup(troop_id)
+    game_troop_setup_vb(troop_id)
+    set_coordinates
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: set_coordinates
+  #--------------------------------------------------------------------------
+  def set_coordinates
+    for member in members
+      member.origin_x = member.screen_x
+      member.origin_y = member.screen_y
+      member.create_move_to(member.screen_x, member.screen_y, 1)
+    end
+  end
+  
+end # Game_Troop
+
+#==============================================================================
+# ? ��  Sprite_Battler
+#==============================================================================
+
+class Sprite_Battler < Sprite_Base
+  
+  #--------------------------------------------------------------------------
+  # public instance_variable
+  #--------------------------------------------------------------------------
+  attr_accessor :character_base
+  attr_accessor :character_sprite
+  
+  #--------------------------------------------------------------------------
+  # alias method: dispose
+  #--------------------------------------------------------------------------
+  alias sprite_battler_dispose_vb dispose
+  def dispose
+    dispose_character_sprite
+    sprite_battler_dispose_vb
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: dispose_character_sprite
+  #--------------------------------------------------------------------------
+  def dispose_character_sprite
+    @character_sprite.dispose unless @character_sprite.nil?
+  end
+  
+  #--------------------------------------------------------------------------
+  # alias method: update
+  #--------------------------------------------------------------------------
+  alias sprite_battler_update_vb update
+  def update
+    sprite_battler_update_vb
+    return if @battler.nil?
+    update_move_to
+    update_character_base
+    update_character_sprite
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: update_character_base
+  #--------------------------------------------------------------------------
+  def update_character_base
+    return if @character_base.nil?
+    @character_base.update
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: update_character_sprite
+  #--------------------------------------------------------------------------
+  def update_character_sprite
+    return if @character_sprite.nil?
+    @character_sprite.update
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: update_move_to
+  #--------------------------------------------------------------------------
+  def update_move_to
+    @battler.update_move_to
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: moving?
+  #--------------------------------------------------------------------------
+  def moving?
+    return false if @battler.nil?
+    return @battler.moving?
+  end
+  
+end # Sprite_Battler
+
+#==============================================================================
+# ? ��  Sprite_BattleCharacter
+#==============================================================================
+
+class Sprite_BattleCharacter < Sprite_Character
+  
+  #--------------------------------------------------------------------------
+  # initialize
+  #--------------------------------------------------------------------------
+  def initialize(viewport, character = nil)
+    super(viewport, character)
+    character.sprite = self
+  end
+  
+end # Sprite_BattleCharacter
+
+#==============================================================================
+# ? ��  Spriteset_Battle
+#==============================================================================
+
+class Spriteset_Battle
+  
+  #--------------------------------------------------------------------------
+  # public instance_variable
+  #--------------------------------------------------------------------------
+  attr_accessor :actor_sprites
+  attr_accessor :enemy_sprites
+  
+  #--------------------------------------------------------------------------
+  # overwrite method: create_actors
+  #--------------------------------------------------------------------------
+  def create_actors
+    total = $game_party.max_battle_members
+    @current_party = $game_party.battle_members.clone
+    @actor_sprites = Array.new(total) { Sprite_Battler.new(@viewport1) }
+    for actor in $game_party.battle_members
+      @actor_sprites[actor.index].battler = actor
+      create_actor_sprite(actor)
+    end
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: create_actor_sprite
+  #--------------------------------------------------------------------------
+  def create_actor_sprite(actor)
+    character = Game_BattleCharacter.new(actor)
+    character_sprite = Sprite_BattleCharacter.new(@viewport1, character)
+    @actor_sprites[actor.index].character_base = character
+    @actor_sprites[actor.index].character_sprite = character_sprite
+    actor.face_opposing_party
+  end
+  
+  #--------------------------------------------------------------------------
+  # alias method: update_actors
+  #--------------------------------------------------------------------------
+  alias spriteset_battle_update_actors_vb update_actors
+  def update_actors
+    if @current_party != $game_party.battle_members
+      dispose_actors
+      create_actors
+    end
+    spriteset_battle_update_actors_vb
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: moving?
+  #--------------------------------------------------------------------------
+  def moving?
+    return battler_sprites.any? {|sprite| sprite.moving? }
+  end
+  
+end # Spriteset_Battle
+
+#==============================================================================
+# ? ��  Scene_Battle
+#==============================================================================
+
+class Scene_Battle < Scene_Base
+  
+  #--------------------------------------------------------------------------
+  # public instance variables
+  #--------------------------------------------------------------------------
+  attr_accessor :spriteset
+  
+  #--------------------------------------------------------------------------
+  # alias method: process_action_end
+  #--------------------------------------------------------------------------
+  alias scene_battle_process_action_end_vb process_action_end
+  def process_action_end
+    start_battler_move_origin
+    scene_battle_process_action_end_vb
+  end
+  
+  #--------------------------------------------------------------------------
+  # alias method: execute_action
+  #--------------------------------------------------------------------------
+  alias scene_battle_execute_action_vb execute_action
+  def execute_action
+    start_battler_move_forward
+    scene_battle_execute_action_vb
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: start_battler_move_forward
+  #--------------------------------------------------------------------------
+  def start_battler_move_forward
+    return if @subject.started_turn
+    @subject.started_turn = true
+    @subject.move_forward
+    wait_for_moving
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: start_battler_move_origin
+  #--------------------------------------------------------------------------
+  def start_battler_move_origin
+    @subject.started_turn = nil
+    move_battlers_origin
+    wait_for_moving
+    @subject.face_opposing_party rescue 0
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: move_battlers_origin
+  #--------------------------------------------------------------------------
+  def move_battlers_origin
+    for member in all_battle_members
+      next if member.dead?
+      next unless member.exist?
+      member.move_origin
+    end
+  end
+  
+  #--------------------------------------------------------------------------
+  # new method: wait_for_moving
+  #--------------------------------------------------------------------------
+  def wait_for_moving
+    update_for_wait
+    update_for_wait while @spriteset.moving?
+  end
+  
+end # Scene_Battle
+
+#==============================================================================
+# 
+#  ��  End of File
+# 
+#==============================================================================
diff --git a/samples/Text/iso8859-8-i.txt b/samples/Text/iso8859-8-i.txt
new file mode 100644
index 00000000..ed2bf6c4
--- /dev/null
+++ b/samples/Text/iso8859-8-i.txt
@@ -0,0 +1 @@
+%���
\ No newline at end of file
diff --git a/samples/Text/utf16le-windows.txt b/samples/Text/utf16le-windows.txt
new file mode 100644
index 00000000..590ae2a6
Binary files /dev/null and b/samples/Text/utf16le-windows.txt differ
diff --git a/samples/Text/utf16le.txt b/samples/Text/utf16le.txt
new file mode 100644
index 00000000..1829ef70
Binary files /dev/null and b/samples/Text/utf16le.txt differ
diff --git a/samples/VCL/varnish2_default.vcl b/samples/VCL/varnish2_default.vcl
new file mode 100644
index 00000000..9b01881f
--- /dev/null
+++ b/samples/VCL/varnish2_default.vcl
@@ -0,0 +1,152 @@
+/*-
+ * Copyright (c) 2006 Verdens Gang AS
+ * Copyright (c) 2006-2008 Linpro AS
+ * All rights reserved.
+ *
+ * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * $Id$
+ *
+ * The default VCL code.
+ *
+ * NB! You do NOT need to copy & paste all of these functions into your
+ * own vcl code, if you do not provide a definition of one of these
+ * functions, the compiler will automatically fall back to the default
+ * code from this file.
+ *
+ * This code will be prefixed with a backend declaration built from the
+ * -b argument.
+ */
+
+sub vcl_recv {
+    if (req.request != "GET" &&
+      req.request != "HEAD" &&
+      req.request != "PUT" &&
+      req.request != "POST" &&
+      req.request != "TRACE" &&
+      req.request != "OPTIONS" &&
+      req.request != "DELETE") {
+        /* Non-RFC2616 or CONNECT which is weird. */
+        return (pipe);
+    }
+    if (req.request != "GET" && req.request != "HEAD") {
+        /* We only deal with GET and HEAD by default */
+        return (pass);
+    }
+    if (req.http.Authorization || req.http.Cookie) {
+        /* Not cacheable by default */
+        return (pass);
+    }
+    return (lookup);
+}
+
+sub vcl_pipe {
+    # Note that only the first request to the backend will have
+    # X-Forwarded-For set.  If you use X-Forwarded-For and want to
+    # have it set for all requests, make sure to have:
+    # set req.http.connection = "close";
+    # here.  It is not set by default as it might break some broken web
+    # applications, like IIS with NTLM authentication.
+    return (pipe);
+}
+
+sub vcl_pass {
+    return (pass);
+}
+
+sub vcl_hash {
+    set req.hash += req.url;
+    if (req.http.host) {
+        set req.hash += req.http.host;
+    } else {
+        set req.hash += server.ip;
+    }
+    return (hash);
+}
+
+sub vcl_hit {
+    if (!obj.cacheable) {
+        return (pass);
+    }
+    return (deliver);
+}
+
+sub vcl_miss {
+    return (fetch);
+}
+
+sub vcl_fetch {
+    if (!obj.cacheable) {
+        return (pass);
+    }
+    if (obj.http.Set-Cookie) {
+        return (pass);
+    }
+    set obj.prefetch =  -30s;
+    return (deliver);
+}
+
+sub vcl_deliver {
+    return (deliver);
+}
+
+sub vcl_discard {
+    /* XXX: Do not redefine vcl_discard{}, it is not yet supported */
+    return (discard);
+}
+
+sub vcl_prefetch {
+    /* XXX: Do not redefine vcl_prefetch{}, it is not yet supported */
+    return (fetch);
+}
+
+sub vcl_timeout {
+    /* XXX: Do not redefine vcl_timeout{}, it is not yet supported */
+    return (discard);
+}
+
+sub vcl_error {
+    set obj.http.Content-Type = "text/html; charset=utf-8";
+    synthetic {"
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html>
+  <head>
+    <title>"} obj.status " " obj.response {"</title>
+  </head>
+  <body>
+    <h1>Error "} obj.status " " obj.response {"</h1>
+    <p>"} obj.response {"</p>
+    <h3>Guru Meditation:</h3>
+    <p>XID: "} req.xid {"</p>
+    <hr>
+    <address>
+       <a href="http://www.varnish-cache.org/">Varnish cache server</a>
+    </address>
+  </body>
+</html>
+"};
+    return (deliver);
+}
diff --git a/samples/VCL/varnish3_default.vcl b/samples/VCL/varnish3_default.vcl
new file mode 100644
index 00000000..412b6e94
--- /dev/null
+++ b/samples/VCL/varnish3_default.vcl
@@ -0,0 +1,149 @@
+/*-
+ * Copyright (c) 2006 Verdens Gang AS
+ * Copyright (c) 2006-2011 Varnish Software AS
+ * All rights reserved.
+ *
+ * Author: Poul-Henning Kamp <phk@phk.freebsd.dk>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL AUTHOR OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR 
+ * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
+ * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ * The default VCL code.
+ *
+ * NB! You do NOT need to copy & paste all of these functions into your
+ * own vcl code, if you do not provide a definition of one of these
+ * functions, the compiler will automatically fall back to the default
+ * code from this file.
+ *
+ * This code will be prefixed with a backend declaration built from the
+ * -b argument.
+ */
+
+sub vcl_recv {
+    if (req.restarts == 0) {
+	if (req.http.x-forwarded-for) {
+	    set req.http.X-Forwarded-For =
+		req.http.X-Forwarded-For + ", " + client.ip;
+	} else {
+	    set req.http.X-Forwarded-For = client.ip;
+	}
+    }
+    if (req.request != "GET" &&
+      req.request != "HEAD" &&
+      req.request != "PUT" &&
+      req.request != "POST" &&
+      req.request != "TRACE" &&
+      req.request != "OPTIONS" &&
+      req.request != "DELETE") {
+        /* Non-RFC2616 or CONNECT which is weird. */
+        return (pipe);
+    }
+    if (req.request != "GET" && req.request != "HEAD") {
+        /* We only deal with GET and HEAD by default */
+        return (pass);
+    }
+    if (req.http.Authorization || req.http.Cookie) {
+        /* Not cacheable by default */
+        return (pass);
+    }
+    return (lookup);
+}
+
+sub vcl_pipe {
+    # Note that only the first request to the backend will have
+    # X-Forwarded-For set.  If you use X-Forwarded-For and want to
+    # have it set for all requests, make sure to have:
+    # set bereq.http.connection = "close";
+    # here.  It is not set by default as it might break some broken web
+    # applications, like IIS with NTLM authentication.
+    return (pipe);
+}
+
+sub vcl_pass {
+    return (pass);
+}
+
+sub vcl_hash {
+    hash_data(req.url);
+    if (req.http.host) {
+        hash_data(req.http.host);
+    } else {
+        hash_data(server.ip);
+    }
+    return (hash);
+}
+
+sub vcl_hit {
+    return (deliver);
+}
+
+sub vcl_miss {
+    return (fetch);
+}
+
+sub vcl_fetch {
+    if (beresp.ttl <= 0s ||
+        beresp.http.Set-Cookie ||
+        beresp.http.Vary == "*") {
+		/*
+		 * Mark as "Hit-For-Pass" for the next 2 minutes
+		 */
+		set beresp.ttl = 120 s;
+		return (hit_for_pass);
+    }
+    return (deliver);
+}
+
+sub vcl_deliver {
+    return (deliver);
+}
+
+sub vcl_error {
+    set obj.http.Content-Type = "text/html; charset=utf-8";
+    set obj.http.Retry-After = "5";
+    synthetic {"
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
+ "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
+<html>
+  <head>
+    <title>"} + obj.status + " " + obj.response + {"</title>
+  </head>
+  <body>
+    <h1>Error "} + obj.status + " " + obj.response + {"</h1>
+    <p>"} + obj.response + {"</p>
+    <h3>Guru Meditation:</h3>
+    <p>XID: "} + req.xid + {"</p>
+    <hr>
+    <p>Varnish cache server</p>
+  </body>
+</html>
+"};
+    return (deliver);
+}
+
+sub vcl_init {
+	return (ok);
+}
+
+sub vcl_fini {
+	return (ok);
+}
diff --git a/samples/Visual Basic/Index.vbhtml b/samples/Visual Basic/Index.vbhtml
new file mode 100644
index 00000000..6aa2b37b
--- /dev/null
+++ b/samples/Visual Basic/Index.vbhtml	
@@ -0,0 +1,47 @@
+@Code
+    ViewData("Title") = "Home Page"
+End Code
+
+@section featured
+    <section class="featured">
+        <div class="content-wrapper">
+            <hgroup class="title">
+                <h1>@ViewData("Title").</h1>
+                <h2>@ViewData("Message")</h2>
+            </hgroup>
+            <p>
+                To learn more about ASP.NET MVC visit
+                <a href="http://asp.net/mvc" title="ASP.NET MVC Website">http://asp.net/mvc</a>.
+                The page features <mark>videos, tutorials, and samples</mark> to help you get the most from ASP.NET MVC.
+                If you have any questions about ASP.NET MVC visit
+                <a href="http://forums.asp.net/1146.aspx/1?MVC" title="ASP.NET MVC Forum">our forums</a>.
+            </p>
+        </div>
+    </section>
+End Section
+
+<h3>We suggest the following:</h3>
+<ol class="round">
+    <li class="one">
+        <h5>Getting Started</h5>
+        ASP.NET MVC gives you a powerful, patterns-based way to build dynamic websites that
+        enables a clean separation of concerns and that gives you full control over markup
+        for enjoyable, agile development. ASP.NET MVC includes many features that enable
+        fast, TDD-friendly development for creating sophisticated applications that use
+        the latest web standards.
+        <a href="http://go.microsoft.com/fwlink/?LinkId=245151">Learn more…</a>
+    </li>
+
+    <li class="two">
+        <h5>Add NuGet packages and jump-start your coding</h5>
+        NuGet makes it easy to install and update free libraries and tools.
+        <a href="http://go.microsoft.com/fwlink/?LinkId=245153">Learn more…</a>
+    </li>
+
+    <li class="three">
+        <h5>Find Web Hosting</h5>
+        You can easily find a web hosting company that offers the right mix of features
+        and price for your applications.
+        <a href="http://go.microsoft.com/fwlink/?LinkId=245157">Learn more…</a>
+    </li>
+</ol>
diff --git a/samples/Visual Basic/Module1.vb b/samples/Visual Basic/Module1.vb
new file mode 100644
index 00000000..caa09195
--- /dev/null
+++ b/samples/Visual Basic/Module1.vb	
@@ -0,0 +1,8 @@
+Module Module1
+
+  Sub Main()
+    Console.Out.WriteLine("Hello, I am a little sample application to test GitHub's Linguist module.")
+    Console.Out.WriteLine("I also include a Razor MVC file just to prove it handles cshtml files now.")
+  End Sub
+
+End Module
diff --git a/samples/XML/XmlIO.pluginspec b/samples/XML/XmlIO.pluginspec
new file mode 100644
index 00000000..8e02e760
--- /dev/null
+++ b/samples/XML/XmlIO.pluginspec
@@ -0,0 +1,13 @@
+<plugin name="XmlIO" version="0.0.1" compatVersion="0.0.1">
+    <vendor>FreeMedForms</vendor>
+    <copyright>(C) 2008-2012 by Eric MAEKER, MD</copyright>
+    <license>GPLv3</license>
+    <category>Patient data</category>
+    <description>The XML form loader/saver for FreeMedForms.</description>
+    <url>http://www.freemedforms.com/</url>
+    <dependencyList>
+      <dependency name="Core" version="0.0.1"/>
+      <dependency name="FormManager" version="0.0.1"/>
+      <dependency name="Category" version="0.0.1"/>
+    </dependencyList>
+</plugin>
diff --git a/samples/XML/csproj-sample.csproj b/samples/XML/csproj-sample.csproj
new file mode 100644
index 00000000..c4c4be68
--- /dev/null
+++ b/samples/XML/csproj-sample.csproj
@@ -0,0 +1,59 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{99D9BF15-2911-4D10-8079-83ABAD688E8B}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>csproj_sample</RootNamespace>
+    <AssemblyName>csproj-sample</AssemblyName>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Program.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
\ No newline at end of file
diff --git a/samples/XML/fsproj-sample.fsproj b/samples/XML/fsproj-sample.fsproj
new file mode 100644
index 00000000..205dde83
--- /dev/null
+++ b/samples/XML/fsproj-sample.fsproj
@@ -0,0 +1,76 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>6cfa7a11-a5cd-4301-bd7b-b210d4d51a29</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <RootNamespace>fsproj_sample</RootNamespace>
+    <AssemblyName>fsproj_sample</AssemblyName>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+    <TargetFSharpCoreVersion>4.3.1.0</TargetFSharpCoreVersion>
+    <Name>fsproj-sample</Name>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <Tailcalls>false</Tailcalls>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <WarningLevel>3</WarningLevel>
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DocumentationFile>bin\Debug\fsproj_sample.XML</DocumentationFile>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <Tailcalls>true</Tailcalls>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <WarningLevel>3</WarningLevel>
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DocumentationFile>bin\Release\fsproj_sample.XML</DocumentationFile>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="mscorlib" />
+    <Reference Include="FSharp.Core, Version=$(TargetFSharpCoreVersion), Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a">
+      <Private>True</Private>
+    </Reference>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Numerics" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Program.fs" />
+    <None Include="App.config" />
+  </ItemGroup>
+  <PropertyGroup>
+    <MinimumVisualStudioVersion Condition="'$(MinimumVisualStudioVersion)' == ''">11</MinimumVisualStudioVersion>
+  </PropertyGroup>
+  <Choose>
+    <When Condition="'$(VisualStudioVersion)' == '11.0'">
+      <PropertyGroup Condition="Exists('$(MSBuildExtensionsPath32)\..\Microsoft SDKs\F#\3.0\Framework\v4.0\Microsoft.FSharp.Targets')">
+        <FSharpTargetsPath>$(MSBuildExtensionsPath32)\..\Microsoft SDKs\F#\3.0\Framework\v4.0\Microsoft.FSharp.Targets</FSharpTargetsPath>
+      </PropertyGroup>
+    </When>
+    <Otherwise>
+      <PropertyGroup Condition="Exists('$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\FSharp\Microsoft.FSharp.Targets')">
+        <FSharpTargetsPath>$(MSBuildExtensionsPath32)\Microsoft\VisualStudio\v$(VisualStudioVersion)\FSharp\Microsoft.FSharp.Targets</FSharpTargetsPath>
+      </PropertyGroup>
+    </Otherwise>
+  </Choose>
+  <Import Project="$(FSharpTargetsPath)" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
\ No newline at end of file
diff --git a/samples/XML/nproj-sample.nproj b/samples/XML/nproj-sample.nproj
new file mode 100644
index 00000000..c50bcccb
--- /dev/null
+++ b/samples/XML/nproj-sample.nproj
@@ -0,0 +1,77 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProductVersion>8.0.30703</ProductVersion>
+    <SchemaVersion>2.0</SchemaVersion>
+    <ProjectGuid>c67af951-5808-4525-9785-d8d6376993e7</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>nproj_sample</RootNamespace>
+    <AssemblyName>nproj_sample</AssemblyName>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+    <NoStdLib>true</NoStdLib>
+    <NemerleVersion>Net-4.0</NemerleVersion>
+    <NemerleBinPathRoot Condition=" '$(NemerleBinPathRoot)' == '' ">$(ProgramFiles)\Nemerle</NemerleBinPathRoot>
+    <Nemerle Condition=" '$(Nemerle)' == '' ">$(NemerleBinPathRoot)\$(NemerleVersion)</Nemerle>
+    <Name>nproj-sample</Name>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugSymbols>false</DebugSymbols>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+    <DocumentationFile>$(OutputPath)\$(AssemblyName).xml</DocumentationFile>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="mscorlib" />
+    <Reference Include="System" />
+    <Reference Include="System.Core">
+      <RequiredTargetFramework>3.5</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="System.Xml.Linq">
+      <RequiredTargetFramework>3.5</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="System.Data.DataSetExtensions">
+      <RequiredTargetFramework>3.5</RequiredTargetFramework>
+    </Reference>
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Nemerle">
+      <SpecificVersion>False</SpecificVersion>
+      <HintPath>$(Nemerle)\Nemerle.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
+    <MacroReference Include="Nemerle.Linq">
+      <HintPath>$(Nemerle)\Nemerle.Linq.dll</HintPath>
+    </MacroReference>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Main.n" />
+    <Compile Include="Properties\AssemblyInfo.n" />
+  </ItemGroup>
+  <ItemGroup>
+    <Folder Include="Properties\" />
+  </ItemGroup>
+  <Import Project="$(Nemerle)\Nemerle.MSBuild.targets" />
+  <!--
+		To modify your build process, add your task inside one of the targets below and uncomment it. 
+		Other similar extension points exist, see Microsoft.Common.targets.
+	<Target Name="BeforeBuild">
+	</Target>
+	<Target Name="AfterBuild">
+	</Target>
+	-->
+</Project>
\ No newline at end of file
diff --git a/samples/XML/pt_BR.xml b/samples/XML/pt_BR.xml
new file mode 100644
index 00000000..bfaf0015
--- /dev/null
+++ b/samples/XML/pt_BR.xml
@@ -0,0 +1,47 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.0" language="pt_BR">
+<context>
+    <name>MainWindow</name>
+    <message>
+        <location filename="../forms/mainwindow.ui" line="22"/>
+        <source>United Kingdom</source>
+        <translation>Reino Unido</translation>
+    </message>
+    <message>
+        <location filename="../forms/mainwindow.ui" line="38"/>
+        <source>God save the Queen</source>
+        <translation>Deus salve a Rainha</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="46"/>
+        <source>England</source>
+        <translation>Inglaterra</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="47"/>
+        <source>Wales</source>
+        <translation>Gales</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="48"/>
+        <source>Scotland</source>
+        <translation>Escócia</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="49"/>
+        <source>Northern Ireland</source>
+        <translation>Irlanda Norte</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="51"/>
+        <source>Portuguese</source>
+        <translation>Português</translation>
+    </message>
+    <message>
+        <location filename="../mainwindow.cpp" line="52"/>
+        <source>English</source>
+        <translation>Inglês</translation>
+    </message>
+</context>
+</TS>
diff --git a/samples/XML/sample.nuspec b/samples/XML/sample.nuspec
new file mode 100644
index 00000000..238c325a
--- /dev/null
+++ b/samples/XML/sample.nuspec
@@ -0,0 +1,21 @@
+<?xml version="1.0"?>
+<package xmlns="http://schemas.microsoft.com/packaging/2010/07/nuspec.xsd">
+  <metadata>
+    <id>Sample</id>
+    <title>Sample</title>
+    <version>0.101.0</version>
+    <authors>Hugh Bot</authors>
+    <owners>Hugh Bot</owners>
+    <summary>A package of nuget</summary>
+    <description>
+      It just works
+    </description>
+    <projectUrl>http://hubot.github.com</projectUrl>
+    <copyright/>
+    <licenseUrl>https://github.com/github/hubot/LICENSEmd</licenseUrl>
+    <requireLicenseAcceptance>false</requireLicenseAcceptance>
+  </metadata>
+  <files>
+    <file src="tools\**" target="tools"/>
+  </files>
+</package>
diff --git a/samples/XML/sample.targets b/samples/XML/sample.targets
new file mode 100644
index 00000000..50e1d81b
--- /dev/null
+++ b/samples/XML/sample.targets
@@ -0,0 +1,9 @@
+<Project xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+    <PropertyGroup>
+        <Name>MyCommon</Name>
+    </PropertyGroup>
+
+    <Target Name="Go">
+        <Message Text="Name=$(Name)"/>
+    </Target>
+</Project>
\ No newline at end of file
diff --git a/samples/XML/vbproj-sample.vbproj b/samples/XML/vbproj-sample.vbproj
new file mode 100644
index 00000000..90422f08
--- /dev/null
+++ b/samples/XML/vbproj-sample.vbproj
@@ -0,0 +1,115 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{400D377F-6993-425A-A798-05532B3FD04C}</ProjectGuid>
+    <OutputType>Exe</OutputType>
+    <StartupObject>vbproj_sample.Module1</StartupObject>
+    <RootNamespace>vbproj_sample</RootNamespace>
+    <AssemblyName>vbproj-sample</AssemblyName>
+    <FileAlignment>512</FileAlignment>
+    <MyType>Console</MyType>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
+    <AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <DefineDebug>true</DefineDebug>
+    <DefineTrace>true</DefineTrace>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DocumentationFile>vbproj-sample.xml</DocumentationFile>
+    <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <PlatformTarget>AnyCPU</PlatformTarget>
+    <DebugType>pdbonly</DebugType>
+    <DefineDebug>false</DefineDebug>
+    <DefineTrace>true</DefineTrace>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DocumentationFile>vbproj-sample.xml</DocumentationFile>
+    <NoWarn>42016,41999,42017,42018,42019,42032,42036,42020,42021,42022</NoWarn>
+  </PropertyGroup>
+  <PropertyGroup>
+    <OptionExplicit>On</OptionExplicit>
+  </PropertyGroup>
+  <PropertyGroup>
+    <OptionCompare>Binary</OptionCompare>
+  </PropertyGroup>
+  <PropertyGroup>
+    <OptionStrict>Off</OptionStrict>
+  </PropertyGroup>
+  <PropertyGroup>
+    <OptionInfer>On</OptionInfer>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Deployment" />
+    <Reference Include="System.Xml" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+  </ItemGroup>
+  <ItemGroup>
+    <Import Include="Microsoft.VisualBasic" />
+    <Import Include="System" />
+    <Import Include="System.Collections" />
+    <Import Include="System.Collections.Generic" />
+    <Import Include="System.Data" />
+    <Import Include="System.Diagnostics" />
+    <Import Include="System.Linq" />
+    <Import Include="System.Xml.Linq" />
+    <Import Include="System.Threading.Tasks" />
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="Module1.vb" />
+    <Compile Include="My Project\AssemblyInfo.vb" />
+    <Compile Include="My Project\Application.Designer.vb">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Application.myapp</DependentUpon>
+    </Compile>
+    <Compile Include="My Project\Resources.Designer.vb">
+      <AutoGen>True</AutoGen>
+      <DesignTime>True</DesignTime>
+      <DependentUpon>Resources.resx</DependentUpon>
+    </Compile>
+    <Compile Include="My Project\Settings.Designer.vb">
+      <AutoGen>True</AutoGen>
+      <DependentUpon>Settings.settings</DependentUpon>
+      <DesignTimeSharedInput>True</DesignTimeSharedInput>
+    </Compile>
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="My Project\Resources.resx">
+      <Generator>VbMyResourcesResXFileCodeGenerator</Generator>
+      <LastGenOutput>Resources.Designer.vb</LastGenOutput>
+      <CustomToolNamespace>My.Resources</CustomToolNamespace>
+      <SubType>Designer</SubType>
+    </EmbeddedResource>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="My Project\Application.myapp">
+      <Generator>MyApplicationCodeGenerator</Generator>
+      <LastGenOutput>Application.Designer.vb</LastGenOutput>
+    </None>
+    <None Include="My Project\Settings.settings">
+      <Generator>SettingsSingleFileGenerator</Generator>
+      <CustomToolNamespace>My</CustomToolNamespace>
+      <LastGenOutput>Settings.Designer.vb</LastGenOutput>
+    </None>
+    <None Include="App.config" />
+  </ItemGroup>
+  <Import Project="$(MSBuildToolsPath)\Microsoft.VisualBasic.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>
\ No newline at end of file
diff --git a/samples/XML/vcxproj-sample.vcxproj b/samples/XML/vcxproj-sample.vcxproj
new file mode 100644
index 00000000..52e7f458
--- /dev/null
+++ b/samples/XML/vcxproj-sample.vcxproj
@@ -0,0 +1,104 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project DefaultTargets="Build" ToolsVersion="12.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup Label="ProjectConfigurations">
+    <ProjectConfiguration Include="Debug|Win32">
+      <Configuration>Debug</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+    <ProjectConfiguration Include="Release|Win32">
+      <Configuration>Release</Configuration>
+      <Platform>Win32</Platform>
+    </ProjectConfiguration>
+  </ItemGroup>
+  <PropertyGroup Label="Globals">
+    <ProjectGuid>{BF6EED48-BF18-4C54-866F-6BBF19EEDC7C}</ProjectGuid>
+    <TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
+    <Keyword>ManagedCProj</Keyword>
+    <RootNamespace>vcxprojsample</RootNamespace>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.Default.props" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>true</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CLRSupport>true</CLRSupport>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
+    <ConfigurationType>Application</ConfigurationType>
+    <UseDebugLibraries>false</UseDebugLibraries>
+    <PlatformToolset>v120</PlatformToolset>
+    <CLRSupport>true</CLRSupport>
+    <CharacterSet>Unicode</CharacterSet>
+  </PropertyGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+  <ImportGroup Label="ExtensionSettings">
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <ImportGroup Label="PropertySheets" Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <Import Project="$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props" Condition="exists('$(UserRootDir)\Microsoft.Cpp.$(Platform).user.props')" Label="LocalAppDataPlatform" />
+  </ImportGroup>
+  <PropertyGroup Label="UserMacros" />
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <LinkIncremental>true</LinkIncremental>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <LinkIncremental>false</LinkIncremental>
+  </PropertyGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <Optimization>Disabled</Optimization>
+      <PreprocessorDefinitions>WIN32;_DEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies />
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemDefinitionGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">
+    <ClCompile>
+      <WarningLevel>Level3</WarningLevel>
+      <PreprocessorDefinitions>WIN32;NDEBUG;%(PreprocessorDefinitions)</PreprocessorDefinitions>
+      <PrecompiledHeader>Use</PrecompiledHeader>
+    </ClCompile>
+    <Link>
+      <GenerateDebugInformation>true</GenerateDebugInformation>
+      <AdditionalDependencies />
+      <SubSystem>Console</SubSystem>
+    </Link>
+  </ItemDefinitionGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Xml" />
+  </ItemGroup>
+  <ItemGroup>
+    <Text Include="ReadMe.txt" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="resource.h" />
+    <ClInclude Include="stdafx.h" />
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="app.rc" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="AssemblyInfo.cpp" />
+    <ClCompile Include="stdafx.cpp">
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'">Create</PrecompiledHeader>
+      <PrecompiledHeader Condition="'$(Configuration)|$(Platform)'=='Release|Win32'">Create</PrecompiledHeader>
+    </ClCompile>
+    <ClCompile Include="vcxproj-sample.cpp" />
+  </ItemGroup>
+  <ItemGroup>
+    <Image Include="app.ico" />
+  </ItemGroup>
+  <Import Project="$(VCTargetsPath)\Microsoft.Cpp.targets" />
+  <ImportGroup Label="ExtensionTargets">
+  </ImportGroup>
+</Project>
\ No newline at end of file
diff --git a/samples/XML/vcxproj-sample.vcxproj.filters b/samples/XML/vcxproj-sample.vcxproj.filters
new file mode 100644
index 00000000..41bf7054
--- /dev/null
+++ b/samples/XML/vcxproj-sample.vcxproj.filters
@@ -0,0 +1,49 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <ItemGroup>
+    <Filter Include="Source Files">
+      <UniqueIdentifier>{4FC737F1-C7A5-4376-A066-2A32D752A2FF}</UniqueIdentifier>
+      <Extensions>cpp;c;cc;cxx;def;odl;idl;hpj;bat;asm;asmx</Extensions>
+    </Filter>
+    <Filter Include="Header Files">
+      <UniqueIdentifier>{93995380-89BD-4b04-88EB-625FBE52EBFB}</UniqueIdentifier>
+      <Extensions>h;hh;hpp;hxx;hm;inl;inc;xsd</Extensions>
+    </Filter>
+    <Filter Include="Resource Files">
+      <UniqueIdentifier>{67DA6AB6-F800-4c08-8B7A-83BB121AAD01}</UniqueIdentifier>
+      <Extensions>rc;ico;cur;bmp;dlg;rc2;rct;bin;rgs;gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms</Extensions>
+    </Filter>
+  </ItemGroup>
+  <ItemGroup>
+    <Text Include="ReadMe.txt" />
+  </ItemGroup>
+  <ItemGroup>
+    <ClInclude Include="stdafx.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+    <ClInclude Include="resource.h">
+      <Filter>Header Files</Filter>
+    </ClInclude>
+  </ItemGroup>
+  <ItemGroup>
+    <ResourceCompile Include="app.rc">
+      <Filter>Resource Files</Filter>
+    </ResourceCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <ClCompile Include="vcxproj-sample.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="AssemblyInfo.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+    <ClCompile Include="stdafx.cpp">
+      <Filter>Source Files</Filter>
+    </ClCompile>
+  </ItemGroup>
+  <ItemGroup>
+    <Image Include="app.ico">
+      <Filter>Resource Files</Filter>
+    </Image>
+  </ItemGroup>
+</Project>
\ No newline at end of file
diff --git a/samples/Xojo/App.xojo_code b/samples/Xojo/App.xojo_code
new file mode 100644
index 00000000..4b7d02a5
--- /dev/null
+++ b/samples/Xojo/App.xojo_code
@@ -0,0 +1,22 @@
+#tag Class
+Protected Class App
+Inherits Application
+	#tag Constant, Name = kEditClear, Type = String, Dynamic = False, Default = \"&Delete", Scope = Public
+		#Tag Instance, Platform = Windows, Language = Default, Definition  = \"&Delete"
+		#Tag Instance, Platform = Linux, Language = Default, Definition  = \"&Delete"
+	#tag EndConstant
+
+	#tag Constant, Name = kFileQuit, Type = String, Dynamic = False, Default = \"&Quit", Scope = Public
+		#Tag Instance, Platform = Windows, Language = Default, Definition  = \"E&xit"
+	#tag EndConstant
+
+	#tag Constant, Name = kFileQuitShortcut, Type = String, Dynamic = False, Default = \"", Scope = Public
+		#Tag Instance, Platform = Mac OS, Language = Default, Definition  = \"Cmd+Q"
+		#Tag Instance, Platform = Linux, Language = Default, Definition  = \"Ctrl+Q"
+	#tag EndConstant
+
+
+	#tag ViewBehavior
+	#tag EndViewBehavior
+End Class
+#tag EndClass
diff --git a/samples/Xojo/BillingReport.xojo_report b/samples/Xojo/BillingReport.xojo_report
new file mode 100644
index 00000000..fae10085
--- /dev/null
+++ b/samples/Xojo/BillingReport.xojo_report
@@ -0,0 +1,23 @@
+#tag Report
+Begin Report BillingReport
+   Compatibility   =   ""
+   Units           =   0
+   Width           =   8.5
+   Begin  PageHeader
+      Type            =   1
+      Height          =   1.0
+   End
+   Begin  Body
+      Type            =   3
+      Height          =   2.0
+   End
+   Begin  PageFooter
+      Type            =   5
+      Height          =   1.0
+   End
+End
+#tag EndReport
+
+#tag ReportCode
+#tag EndReportCode
+
diff --git a/samples/Xojo/MainMenuBar.xojo_menu b/samples/Xojo/MainMenuBar.xojo_menu
new file mode 100644
index 00000000..0634681c
--- /dev/null
+++ b/samples/Xojo/MainMenuBar.xojo_menu
@@ -0,0 +1,112 @@
+#tag Menu
+Begin Menu MainMenuBar
+   Begin MenuItem FileMenu
+      SpecialMenu = 0
+      Text = "&File"
+      Index = -2147483648
+      AutoEnable = True
+      Visible = True
+      Begin QuitMenuItem FileQuit
+         SpecialMenu = 0
+         Text = "#App.kFileQuit"
+         Index = -2147483648
+         ShortcutKey = "#App.kFileQuitShortcut"
+         Shortcut = "#App.kFileQuitShortcut"
+         AutoEnable = True
+         Visible = True
+      End
+   End
+   Begin MenuItem EditMenu
+      SpecialMenu = 0
+      Text = "&Edit"
+      Index = -2147483648
+      AutoEnable = True
+      Visible = True
+      Begin MenuItem EditUndo
+         SpecialMenu = 0
+         Text = "&Undo"
+         Index = -2147483648
+         ShortcutKey = "Z"
+         Shortcut = "Cmd+Z"
+         MenuModifier = True
+         AutoEnable = True
+         Visible = True
+      End
+      Begin MenuItem EditSeparator1
+         SpecialMenu = 0
+         Text = "-"
+         Index = -2147483648
+         AutoEnable = True
+         Visible = True
+      End
+      Begin MenuItem EditCut
+         SpecialMenu = 0
+         Text = "Cu&t"
+         Index = -2147483648
+         ShortcutKey = "X"
+         Shortcut = "Cmd+X"
+         MenuModifier = True
+         AutoEnable = True
+         Visible = True
+      End
+      Begin MenuItem EditCopy
+         SpecialMenu = 0
+         Text = "&Copy"
+         Index = -2147483648
+         ShortcutKey = "C"
+         Shortcut = "Cmd+C"
+         MenuModifier = True
+         AutoEnable = True
+         Visible = True
+      End
+      Begin MenuItem EditPaste
+         SpecialMenu = 0
+         Text = "&Paste"
+         Index = -2147483648
+         ShortcutKey = "V"
+         Shortcut = "Cmd+V"
+         MenuModifier = True
+         AutoEnable = True
+         Visible = True
+      End
+      Begin MenuItem EditClear
+         SpecialMenu = 0
+         Text = "#App.kEditClear"
+         Index = -2147483648
+         AutoEnable = True
+         Visible = True
+      End
+      Begin MenuItem EditSeparator2
+         SpecialMenu = 0
+         Text = "-"
+         Index = -2147483648
+         AutoEnable = True
+         Visible = True
+      End
+      Begin MenuItem EditSelectAll
+         SpecialMenu = 0
+         Text = "Select &All"
+         Index = -2147483648
+         ShortcutKey = "A"
+         Shortcut = "Cmd+A"
+         MenuModifier = True
+         AutoEnable = True
+         Visible = True
+      End
+      Begin MenuItem UntitledSeparator
+         SpecialMenu = 0
+         Text = "-"
+         Index = -2147483648
+         AutoEnable = True
+         Visible = True
+      End
+      Begin AppleMenuItem AboutItem
+         SpecialMenu = 0
+         Text = "About This App..."
+         Index = -2147483648
+         AutoEnable = True
+         Visible = True
+      End
+   End
+End
+#tag EndMenu
diff --git a/samples/Xojo/MyToolbar.xojo_toolbar b/samples/Xojo/MyToolbar.xojo_toolbar
new file mode 100644
index 00000000..02dfbf0a
--- /dev/null
+++ b/samples/Xojo/MyToolbar.xojo_toolbar
@@ -0,0 +1,14 @@
+#tag Toolbar
+Begin Toolbar MyToolbar
+	Begin ToolButton FirstItem
+		Caption = "First Item"
+		HelpTag = ""
+		Style = 0
+	End
+	Begin ToolButton SecondItem
+		Caption = "Second Item"
+		HelpTag = ""
+		Style = 0
+	End
+End
+#tag EndToolbar
diff --git a/samples/Xojo/Window1.xojo_window b/samples/Xojo/Window1.xojo_window
new file mode 100644
index 00000000..c52fd843
--- /dev/null
+++ b/samples/Xojo/Window1.xojo_window
@@ -0,0 +1,304 @@
+#tag Window
+Begin Window Window1
+   BackColor       =   &cFFFFFF00
+   Backdrop        =   0
+   CloseButton     =   True
+   Compatibility   =   ""
+   Composite       =   False
+   Frame           =   0
+   FullScreen      =   False
+   FullScreenButton=   False
+   HasBackColor    =   False
+   Height          =   400
+   ImplicitInstance=   True
+   LiveResize      =   True
+   MacProcID       =   0
+   MaxHeight       =   32000
+   MaximizeButton  =   True
+   MaxWidth        =   32000
+   MenuBar         =   1153981589
+   MenuBarVisible  =   True
+   MinHeight       =   64
+   MinimizeButton  =   True
+   MinWidth        =   64
+   Placement       =   0
+   Resizeable      =   True
+   Title           =   "Sample App"
+   Visible         =   True
+   Width           =   600
+   Begin PushButton HelloWorldButton
+      AutoDeactivate  =   True
+      Bold            =   False
+      ButtonStyle     =   "0"
+      Cancel          =   False
+      Caption         =   "Push Me"
+      Default         =   True
+      Enabled         =   True
+      Height          =   20
+      HelpTag         =   ""
+      Index           =   -2147483648
+      InitialParent   =   ""
+      Italic          =   False
+      Left            =   260
+      LockBottom      =   False
+      LockedInPosition=   False
+      LockLeft        =   True
+      LockRight       =   False
+      LockTop         =   True
+      Scope           =   0
+      TabIndex        =   0
+      TabPanelIndex   =   0
+      TabStop         =   True
+      TextFont        =   "System"
+      TextSize        =   0.0
+      TextUnit        =   0
+      Top             =   32
+      Underline       =   False
+      Visible         =   True
+      Width           =   80
+   End
+End
+#tag EndWindow
+
+#tag WindowCode
+#tag EndWindowCode
+
+#tag Events HelloWorldButton
+	#tag Event
+		Sub Action()
+		  Dim total As Integer
+		  
+		  For i As Integer = 0 To 10
+		    total = total + i
+		  Next
+		  
+		  MsgBox "Hello World! " + Str(total)
+		End Sub
+	#tag EndEvent
+#tag EndEvents
+#tag ViewBehavior
+	#tag ViewProperty
+		Name="BackColor"
+		Visible=true
+		Group="Appearance"
+		InitialValue="&hFFFFFF"
+		Type="Color"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Backdrop"
+		Visible=true
+		Group="Appearance"
+		Type="Picture"
+		EditorType="Picture"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="CloseButton"
+		Visible=true
+		Group="Appearance"
+		InitialValue="True"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Composite"
+		Visible=true
+		Group="Appearance"
+		InitialValue="False"
+		Type="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Frame"
+		Visible=true
+		Group="Appearance"
+		InitialValue="0"
+		Type="Integer"
+		EditorType="Enum"
+		#tag EnumValues
+			"0 - Document"
+			"1 - Movable Modal"
+			"2 - Modal Dialog"
+			"3 - Floating Window"
+			"4 - Plain Box"
+			"5 - Shadowed Box"
+			"6 - Rounded Window"
+			"7 - Global Floating Window"
+			"8 - Sheet Window"
+			"9 - Metal Window"
+			"10 - Drawer Window"
+			"11 - Modeless Dialog"
+		#tag EndEnumValues
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="FullScreen"
+		Group="Appearance"
+		InitialValue="False"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="FullScreenButton"
+		Visible=true
+		Group="Appearance"
+		InitialValue="False"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="HasBackColor"
+		Visible=true
+		Group="Appearance"
+		InitialValue="False"
+		Type="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Height"
+		Visible=true
+		Group="Position"
+		InitialValue="400"
+		Type="Integer"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="ImplicitInstance"
+		Visible=true
+		Group="Appearance"
+		InitialValue="True"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Interfaces"
+		Visible=true
+		Group="ID"
+		Type="String"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="LiveResize"
+		Visible=true
+		Group="Appearance"
+		InitialValue="True"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="MacProcID"
+		Visible=true
+		Group="Appearance"
+		InitialValue="0"
+		Type="Integer"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="MaxHeight"
+		Visible=true
+		Group="Position"
+		InitialValue="32000"
+		Type="Integer"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="MaximizeButton"
+		Visible=true
+		Group="Appearance"
+		InitialValue="True"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="MaxWidth"
+		Visible=true
+		Group="Position"
+		InitialValue="32000"
+		Type="Integer"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="MenuBar"
+		Visible=true
+		Group="Appearance"
+		Type="MenuBar"
+		EditorType="MenuBar"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="MenuBarVisible"
+		Group="Appearance"
+		InitialValue="True"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="MinHeight"
+		Visible=true
+		Group="Position"
+		InitialValue="64"
+		Type="Integer"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="MinimizeButton"
+		Visible=true
+		Group="Appearance"
+		InitialValue="True"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="MinWidth"
+		Visible=true
+		Group="Position"
+		InitialValue="64"
+		Type="Integer"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Name"
+		Visible=true
+		Group="ID"
+		Type="String"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Placement"
+		Visible=true
+		Group="Position"
+		InitialValue="0"
+		Type="Integer"
+		EditorType="Enum"
+		#tag EnumValues
+			"0 - Default"
+			"1 - Parent Window"
+			"2 - Main Screen"
+			"3 - Parent Window Screen"
+			"4 - Stagger"
+		#tag EndEnumValues
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Resizeable"
+		Visible=true
+		Group="Appearance"
+		InitialValue="True"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Super"
+		Visible=true
+		Group="ID"
+		Type="String"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Title"
+		Visible=true
+		Group="Appearance"
+		InitialValue="Untitled"
+		Type="String"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Visible"
+		Visible=true
+		Group="Appearance"
+		InitialValue="True"
+		Type="Boolean"
+		EditorType="Boolean"
+	#tag EndViewProperty
+	#tag ViewProperty
+		Name="Width"
+		Visible=true
+		Group="Position"
+		InitialValue="600"
+		Type="Integer"
+	#tag EndViewProperty
+#tag EndViewBehavior
diff --git a/samples/Xojo/database.xojo_script b/samples/Xojo/database.xojo_script
new file mode 100644
index 00000000..1f0f59cc
--- /dev/null
+++ b/samples/Xojo/database.xojo_script
@@ -0,0 +1,17 @@
+Dim dbFile As FolderItem
+Dim db As New SQLiteDatabase
+dbFile = GetFolderItem("Employees.sqlite")
+db.DatabaseFile = dbFile
+If db.Connect Then
+  db.SQLExecute("BEGIN TRANSACTION")
+  db.SQLExecute ("INSERT INTO Employees (Name,Job,YearJoined) VALUES "_
+    +"('Dr.Strangelove','Advisor',1962)")
+  If db.Error then
+    MsgBox("Error: " + db.ErrorMessage)
+    db.Rollback
+  Else
+    db.Commit
+  End If
+Else
+  MsgBox("The database couldn't be opened. Error: " + db.ErrorMessage)
+End If
diff --git a/samples/YAML/vcr_cassette.yml b/samples/YAML/vcr_cassette.yml
new file mode 100644
index 00000000..cf21a3fb
--- /dev/null
+++ b/samples/YAML/vcr_cassette.yml
@@ -0,0 +1,20 @@
+---
+http_interactions:
+- request:
+    method: get
+    uri: http://example.com/
+    body: ''
+    headers: {}
+  response:
+    status:
+      code: 200
+      message: OK
+    headers:
+      Content-Type:
+      - text/html;charset=utf-8
+      Content-Length:
+      - '26'
+    body: This is the response body
+    http_version: '1.1'
+  recorded_at: Tue, 01 Nov 2011 04:58:44 GMT
+recorded_with: VCR 2.0.0
diff --git a/samples/Zephir/Cblock.zep b/samples/Zephir/Cblock.zep
new file mode 100644
index 00000000..43db8d7a
--- /dev/null
+++ b/samples/Zephir/Cblock.zep
@@ -0,0 +1,53 @@
+/**
+ * CBLOCK tests
+ * asfas
+ */
+
+%{
+// top statement before namespace, add to after headers
+#define MAX_FACTOR 40
+}%
+
+namespace Test;
+
+%{
+// top statement before class, add to after headers
+// test include .h
+#include "kernel/require.h"
+}%
+
+%{
+
+// c implement fibonacci
+static long fibonacci(long n) {
+        if (n < 2) return n;
+        else return fibonacci(n - 2) + fibonacci(n - 1);
+}
+
+}%
+
+class Cblock
+{
+    public function testCblock1()
+    {
+        int a = 0;
+
+        %{
+            a = MAX_FACTOR;
+        }%
+
+        return a;
+    }
+
+    public function testCblock2()
+    {
+            long a = 0;
+
+            %{
+                a = fibonacci(MAX_FACTOR);
+            }%
+
+            return a;
+    }
+
+}
diff --git a/samples/Zephir/Router.zep b/samples/Zephir/Router.zep
new file mode 100644
index 00000000..a8d4f907
--- /dev/null
+++ b/samples/Zephir/Router.zep
@@ -0,0 +1,557 @@
+
+namespace Test\Router;
+
+/**
+ * Test\Router\Route
+ *
+ * This class represents every route added to the router
+ */
+class Route
+{
+    protected _pattern;
+
+    protected _compiledPattern;
+
+    protected _paths;
+
+    protected _methods;
+
+    protected _hostname;
+
+    protected _converters;
+
+    protected _id;
+
+    protected _name;
+
+    protected _beforeMatch;
+
+    /**
+     * Test\Router\Route constructor
+     *
+     * @param string pattern
+     * @param array paths
+     * @param array|string httpMethods
+     */
+    public function __construct(pattern, paths=null, httpMethods=null)
+    {
+        // Configure the route (extract parameters, paths, etc)
+        this->reConfigure(pattern, paths);
+
+        // Update the HTTP method constraints
+        let this->_methods = httpMethods;
+    }
+
+    /**
+     * Replaces placeholders from pattern returning a valid PCRE regular expression
+     *
+     * @param string pattern
+     * @return string
+     */
+    public function compilePattern(pattern)
+    {
+        var idPattern;
+
+        // If a pattern contains ':', maybe there are placeholders to replace
+        if memstr(pattern, ":") {
+
+            // This is a pattern for valid identifiers
+            let idPattern = "/([a-zA-Z0-9\\_\\-]+)";
+
+            // Replace the module part
+            if memstr(pattern, "/:module") {
+                let pattern = str_replace("/:module", idPattern, pattern);
+            }
+
+            // Replace the controller placeholder
+            if memstr(pattern, "/:controller") {
+                let pattern = str_replace("/:controller", idPattern, pattern);
+            }
+
+            // Replace the namespace placeholder
+            if memstr(pattern, "/:namespace") {
+                let pattern = str_replace("/:namespace", idPattern, pattern);
+            }
+
+            // Replace the action placeholder
+            if memstr(pattern, "/:action") {
+                let pattern = str_replace("/:action", idPattern, pattern);
+            }
+
+            // Replace the params placeholder
+            if memstr(pattern, "/:params") {
+                let pattern = str_replace("/:params", "(/.*)*", pattern);
+            }
+
+            // Replace the int placeholder
+            if memstr(pattern, "/:int") {
+                let pattern = str_replace("/:int", "/([0-9]+)", pattern);
+            }
+        }
+
+        // Check if the pattern has parantheses in order to add the regex delimiters
+        if memstr(pattern, "(") {
+            return "#^" . pattern . "$#";
+        }
+
+        // Square brackets are also checked
+        if memstr(pattern, "[") {
+            return "#^" . pattern . "$#";
+        }
+
+        return pattern;
+    }
+
+    /**
+     * Set one or more HTTP methods that constraint the matching of the route
+     *
+     *<code>
+     * $route->via('GET');
+     * $route->via(array('GET', 'POST'));
+     *</code>
+     *
+     * @param string|array httpMethods
+     * @return Test\Router\Route
+     */
+    public function via(httpMethods)
+    {
+        let this->_methods = httpMethods;
+        return this;
+    }
+
+    /**
+     * Extracts parameters from a string
+     *
+     * @param string pattern
+     */
+    public function extractNamedParams(string pattern)
+    {
+
+        char ch;
+        var tmp, matches;
+        boolean notValid = false;
+        int cursor, cursorVar, marker, bracketCount = 0, parenthesesCount = 0, foundPattern = 0;
+        int intermediate = 0, numberMatches = 0;
+        string route, item, variable, regexp;
+
+        if strlen(pattern) <= 0 {
+            return false;
+        }
+
+        let matches = [],
+        route = "";
+
+        for cursor, ch in pattern {
+
+            if parenthesesCount == 0 {
+                if ch == '{' {
+                    if bracketCount == 0 {
+                        let marker = cursor + 1,
+                            intermediate = 0,
+                            notValid = false;
+                    }
+                    let bracketCount++;
+                } else {
+                    if ch == '}' {
+                        let bracketCount--;
+                        if intermediate > 0 {
+                            if bracketCount == 0 {
+
+                                let numberMatches++,
+                                    variable = null,
+                                    regexp = null,
+                                    item = (string) substr(pattern, marker, cursor - marker);
+
+                                for cursorVar, ch in item {
+
+                                    if ch == '\0' {
+                                        break;
+                                    }
+
+                                    if cursorVar == 0 && !((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z')) {
+                                        let notValid = true;
+                                        break;
+                                    }
+
+                                    if (ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <='9') || ch == '-' || ch == '_' || ch ==  ':' {
+                                        if ch == ':' {
+                                            let variable = (string) substr(item, 0, cursorVar),
+                                                regexp = (string) substr(item, cursorVar + 1);
+                                            break;
+                                        }
+                                    } else {
+                                        let notValid = true;
+                                        break;
+                                    }
+
+                                }
+
+                                if !notValid {
+
+                                    let tmp = numberMatches;
+
+                                    if variable && regexp {
+
+                                        let foundPattern = 0;
+                                        for ch in regexp {
+                                            if ch == '\0' {
+                                                break;
+                                            }
+                                            if !foundPattern {
+                                                if ch == '(' {
+                                                    let foundPattern = 1;
+                                                }
+                                            } else {
+                                                if ch == ')' {
+                                                    let foundPattern = 2;
+                                                    break;
+                                                }
+                                            }
+                                        }
+
+                                        if foundPattern != 2 {
+                                            let route .= '(',
+                                                route .= regexp,
+                                                route .= ')';
+                                        } else {
+                                            let route .= regexp;
+                                        }
+                                        let matches[variable] = tmp;
+                                    } else {
+                                        let route .= "([^/]*)",
+                                            matches[item] = tmp;
+                                    }
+                                } else {
+                                    let route .= "{" . item ."}";
+                                }
+                                continue;
+                            }
+                        }
+                    }
+                }
+            }
+
+            if bracketCount == 0 {
+                if ch == '(' {
+                    let parenthesesCount++;
+                } else {
+                    if ch == ')' {
+                        let parenthesesCount--;
+                        if parenthesesCount == 0 {
+                            let numberMatches++;
+                        }
+                    }
+                }
+            }
+
+            if bracketCount > 0 {
+                let intermediate++;
+            } else {
+                let route .= ch;
+            }
+        }
+
+        return [route, matches];
+    }
+
+    /**
+     * Reconfigure the route adding a new pattern and a set of paths
+     *
+     * @param string pattern
+     * @param array paths
+     */
+    public function reConfigure(pattern, paths=null)
+    {
+        var moduleName, controllerName, actionName,
+            parts, routePaths, realClassName, namespaceName,
+            pcrePattern, compiledPattern, extracted;
+
+        if typeof pattern != "string" {
+            throw new Exception("The pattern must be string");
+        }
+
+        if paths !== null {
+            if typeof paths == "string" {
+
+                let moduleName = null,
+                    controllerName = null,
+                    actionName = null;
+
+                // Explode the short paths using the :: separator
+                let parts = explode("::", paths);
+
+                // Create the array paths dynamically
+                switch count(parts) {
+                    case 3:
+                        let moduleName = parts[0],
+                            controllerName = parts[1],
+                            actionName = parts[2];
+                        break;
+                    case 2:
+                        let controllerName = parts[0],
+                            actionName = parts[1];
+                        break;
+                    case 1:
+                        let controllerName = parts[0];
+                        break;
+                }
+
+                let routePaths = [];
+
+                // Process module name
+                if moduleName !== null {
+                    let routePaths["module"] = moduleName;
+                }
+
+                // Process controller name
+                if controllerName !== null {
+
+                    // Check if we need to obtain the namespace
+                    if memstr(controllerName, "\\") {
+
+                        // Extract the real class name from the namespaced class
+                        let realClassName = get_class_ns(controllerName);
+
+                        // Extract the namespace from the namespaced class
+                        let namespaceName = get_ns_class(controllerName);
+
+                        // Update the namespace
+                        if namespaceName {
+                            let routePaths["namespace"] = namespaceName;
+                        }
+                    } else {
+                        let realClassName = controllerName;
+                    }
+
+                    // Always pass the controller to lowercase
+                    let routePaths["controller"] = uncamelize(realClassName);
+                }
+
+                // Process action name
+                if actionName !== null {
+                    let routePaths["action"] = actionName;
+                }
+            } else {
+                let routePaths = paths;
+            }
+        } else {
+            let routePaths = [];
+        }
+
+        if typeof routePaths !== "array" {
+            throw new Exception("The route contains invalid paths");
+        }
+
+        // If the route starts with '#' we assume that it is a regular expression
+        if !starts_with(pattern, "#") {
+
+            if memstr(pattern, "{") {
+                // The route has named parameters so we need to extract them
+                let extracted = this->extractNamedParams(pattern),
+                    pcrePattern = extracted[0],
+                    routePaths = array_merge(routePaths, extracted[1]);
+            } else {
+                let pcrePattern = pattern;
+            }
+
+            // Transform the route's pattern to a regular expression
+            let compiledPattern = this->compilePattern(pcrePattern);
+        } else {
+            let compiledPattern = pattern;
+        }
+
+        // Update the original pattern
+        let this->_pattern = pattern;
+
+        // Update the compiled pattern
+        let this->_compiledPattern = compiledPattern;
+
+        //Update the route's paths
+        let this->_paths = routePaths;
+    }
+
+    /**
+     * Returns the route's name
+     *
+     * @return string
+     */
+    public function getName()
+    {
+        return this->_name;
+    }
+
+    /**
+     * Sets the route's name
+     *
+     *<code>
+     * $router->add('/about', array(
+     *     'controller' => 'about'
+     * ))->setName('about');
+     *</code>
+     *
+     * @param string name
+     * @return Route
+     */
+    public function setName(name)
+    {
+        let this->_name = name;
+        return this;
+    }
+
+    /**
+     * Sets a callback that is called if the route is matched.
+     * The developer can implement any arbitrary conditions here
+     * If the callback returns false the route is treaded as not matched
+     *
+     * @param callback callback
+     * @return Test\Router\Route
+     */
+    public function beforeMatch(callback)
+    {
+        let this->_beforeMatch = callback;
+        return this;
+    }
+
+    /**
+     * Returns the 'before match' callback if any
+     *
+     * @return mixed
+     */
+    public function getBeforeMatch()
+    {
+        return this->_beforeMatch;
+    }
+
+    /**
+     * Returns the route's id
+     *
+     * @return string
+     */
+    public function getRouteId()
+    {
+        return this->_id;
+    }
+
+    /**
+     * Returns the route's pattern
+     *
+     * @return string
+     */
+    public function getPattern()
+    {
+        return this->_pattern;
+    }
+
+    /**
+     * Returns the route's compiled pattern
+     *
+     * @return string
+     */
+    public function getCompiledPattern()
+    {
+        return this->_compiledPattern;
+    }
+
+    /**
+     * Returns the paths
+     *
+     * @return array
+     */
+    public function getPaths()
+    {
+        return this->_paths;
+    }
+
+    /**
+     * Returns the paths using positions as keys and names as values
+     *
+     * @return array
+     */
+    public function getReversedPaths()
+    {
+        var reversed, path, position;
+
+        let reversed = [];
+        for path, position in this->_paths {
+            let reversed[position] = path;
+        }
+        return reversed;
+    }
+
+    /**
+     * Sets a set of HTTP methods that constraint the matching of the route (alias of via)
+     *
+     *<code>
+     * $route->setHttpMethods('GET');
+     * $route->setHttpMethods(array('GET', 'POST'));
+     *</code>
+     *
+     * @param string|array httpMethods
+     * @return Test\Router\Route
+     */
+    public function setHttpMethods(httpMethods)
+    {
+        let this->_methods = httpMethods;
+        return this;
+    }
+
+    /**
+     * Returns the HTTP methods that constraint matching the route
+     *
+     * @return string|array
+     */
+    public function getHttpMethods()
+    {
+        return this->_methods;
+    }
+
+    /**
+     * Sets a hostname restriction to the route
+     *
+     *<code>
+     * $route->setHostname('localhost');
+     *</code>
+     *
+     * @param string|array httpMethods
+     * @return Test\Router\Route
+     */
+    public function setHostname(hostname)
+    {
+        let this->_hostname = hostname;
+        return this;
+    }
+
+    /**
+     * Returns the hostname restriction if any
+     *
+     * @return string
+     */
+    public function getHostname()
+    {
+        return this->_hostname;
+    }
+
+    /**
+     * Adds a converter to perform an additional transformation for certain parameter
+     *
+     * @param string name
+     * @param callable converter
+     * @return Test\Router\Route
+     */
+    public function convert(name, converter)
+    {
+        let this->_converters[name] = converter;
+        return this;
+    }
+
+    /**
+     * Returns the router converter
+     *
+     * @return array
+     */
+    public function getConverters()
+    {
+        return this->_converters;
+    }
+
+}
diff --git a/samples/Zephir/filenames/exception.zep.c b/samples/Zephir/filenames/exception.zep.c
new file mode 100644
index 00000000..c1e0bc09
--- /dev/null
+++ b/samples/Zephir/filenames/exception.zep.c
@@ -0,0 +1,28 @@
+
+#ifdef HAVE_CONFIG_H
+#include "../../ext_config.h"
+#endif
+
+#include <php.h>
+#include "../../php_ext.h"
+#include "../../ext.h"
+
+#include <Zend/zend_operators.h>
+#include <Zend/zend_exceptions.h>
+#include <Zend/zend_interfaces.h>
+
+#include "kernel/main.h"
+
+
+/**
+ * Test\Router\Exception
+ *
+ * Exceptions generated by the router
+ */
+ZEPHIR_INIT_CLASS(Test_Router_Exception) {
+
+    ZEPHIR_REGISTER_CLASS_EX(Test\\Router, Exception, test, router_exception, zend_exception_get_default(TSRMLS_C), NULL, 0);
+
+    return SUCCESS;
+
+}
diff --git a/samples/Zephir/filenames/exception.zep.h b/samples/Zephir/filenames/exception.zep.h
new file mode 100644
index 00000000..49d56b9c
--- /dev/null
+++ b/samples/Zephir/filenames/exception.zep.h
@@ -0,0 +1,4 @@
+
+extern zend_class_entry *test_router_exception_ce;
+
+ZEPHIR_INIT_CLASS(Test_Router_Exception);
diff --git a/samples/Zephir/filenames/exception.zep.php b/samples/Zephir/filenames/exception.zep.php
new file mode 100644
index 00000000..f6087a8d
--- /dev/null
+++ b/samples/Zephir/filenames/exception.zep.php
@@ -0,0 +1,8 @@
+<?php
+
+namespace Test\Router;
+
+class Exception extends \Exception
+{
+
+}
diff --git a/samples/Zimpl/sample.zmpl b/samples/Zimpl/sample.zmpl
new file mode 100644
index 00000000..ade112cd
--- /dev/null
+++ b/samples/Zimpl/sample.zmpl
@@ -0,0 +1,21 @@
+# $Id: queens3.zpl,v 1.3 2009/09/13 16:15:53 bzfkocht Exp $
+#
+# This is a formulation of the n queens problem using binary variables.
+# variables. Since the number of queens is maximized, the size of the
+# board can be set arbitrarily.
+#
+param columns := 8;
+
+set I   := { 1 .. columns };
+set IxI := I * I;
+
+set TABU[<i,j> in IxI] := { <m,n> in IxI with 
+   (m != i or n != j) and (m == i or n == j or abs(m - i) == abs(n - j)) };
+
+var x[IxI] binary;
+
+maximize queens: sum <i,j> in IxI : x[i,j];
+
+subto c1: forall <i,j> in IxI do
+   card(TABU[i,j]) - card(TABU[i,j]) * x[i,j] >= sum <m,n> in TABU[i,j] : x[m,n];
+   
diff --git a/test/test_blob.rb b/test/test_blob.rb
index 0df35795..4f08db11 100644
--- a/test/test_blob.rb
+++ b/test/test_blob.rb
@@ -11,6 +11,17 @@ class TestBlob < Test::Unit::TestCase
 
   Lexer = Pygments::Lexer
 
+  def setup
+    # git blobs are normally loaded as ASCII-8BIT since they may contain data
+    # with arbitrary encoding not known ahead of time
+    @original_external = Encoding.default_external
+    Encoding.default_external = Encoding.find("ASCII-8BIT")
+  end
+
+  def teardown
+    Encoding.default_external = @original_external
+  end
+
   def samples_path
     File.expand_path("../../samples", __FILE__)
   end
@@ -67,6 +78,14 @@ class TestBlob < Test::Unit::TestCase
     assert_equal 475, blob("Emacs Lisp/ess-julia.el").lines.length
   end
 
+  def test_lines_maintains_original_encoding
+    # Even if the file's encoding is detected as something like UTF-16LE,
+    # earlier versions of the gem made implicit guarantees that the encoding of
+    # each `line` is in the same encoding as the file was originally read (in
+    # practice, UTF-8 or ASCII-8BIT)
+    assert_equal Encoding.default_external, blob("Text/utf16le.txt").lines.first.encoding
+  end
+
   def test_size
     assert_equal 15, blob("Ruby/foo.rb").size
   end
@@ -77,13 +96,27 @@ class TestBlob < Test::Unit::TestCase
 
   def test_sloc
     assert_equal 2, blob("Ruby/foo.rb").sloc
+    assert_equal 3, blob("Text/utf16le-windows.txt").sloc
+    assert_equal 1, blob("Text/iso8859-8-i.txt").sloc
   end
 
   def test_encoding
     assert_equal "ISO-8859-2", blob("Text/README").encoding
+    assert_equal "ISO-8859-2", blob("Text/README").ruby_encoding
     assert_equal "ISO-8859-1", blob("Text/dump.sql").encoding
+    assert_equal "ISO-8859-1", blob("Text/dump.sql").ruby_encoding
     assert_equal "UTF-8", blob("Text/foo.txt").encoding
+    assert_equal "UTF-8", blob("Text/foo.txt").ruby_encoding
+    assert_equal "UTF-16LE", blob("Text/utf16le.txt").encoding
+    assert_equal "UTF-16LE", blob("Text/utf16le.txt").ruby_encoding
+    assert_equal "UTF-16LE", blob("Text/utf16le-windows.txt").encoding
+    assert_equal "UTF-16LE", blob("Text/utf16le-windows.txt").ruby_encoding
+    assert_equal "ISO-2022-KR", blob("Text/ISO-2022-KR.txt").encoding
+    assert_equal "binary", blob("Text/ISO-2022-KR.txt").ruby_encoding
     assert_nil blob("Binary/dog.o").encoding
+
+    assert_equal "windows-1252", blob("Text/Visual_Battlers.rb").encoding
+    assert_equal "Windows-1252", blob("Text/Visual_Battlers.rb").ruby_encoding
   end
 
   def test_binary
@@ -185,6 +218,9 @@ class TestBlob < Test::Unit::TestCase
     # PEG.js-generated parsers
     assert blob("JavaScript/parser.js").generated?
 
+    # Generated PostScript
+    assert !blob("PostScript/sierpinski.ps").generated?
+
     # These examples are too basic to tell
     assert !blob("JavaScript/empty.js").generated?
     assert !blob("JavaScript/hello.js").generated?
@@ -208,6 +244,16 @@ class TestBlob < Test::Unit::TestCase
     assert !blob("CSS/bootstrap.css").generated?
     assert blob("CSS/bootstrap.min.css").generated?
 
+    # Generated VCR
+    assert blob("YAML/vcr_cassette.yml").generated?
+
+    # Generated by Zephir
+    assert blob("Zephir/filenames/exception.zep.c").generated?
+    assert blob("Zephir/filenames/exception.zep.h").generated?
+    assert blob("Zephir/filenames/exception.zep.php").generated?
+    assert !blob("Zephir/Router.zep").generated?
+
+
     assert Linguist::Generated.generated?("node_modules/grunt/lib/grunt.js", nil)
   end
 
@@ -221,6 +267,11 @@ class TestBlob < Test::Unit::TestCase
     # Node dependencies
     assert blob("node_modules/coffee-script/lib/coffee-script.js").vendored?
 
+    # Bower Components
+    assert blob("bower_components/custom/custom.js").vendored?
+    assert blob("app/bower_components/custom/custom.js").vendored?
+    assert blob("vendor/assets/bower_components/custom/custom.js").vendored?
+
     # Rails vendor/
     assert blob("vendor/plugins/will_paginate/lib/will_paginate.rb").vendored?
 
@@ -270,7 +321,6 @@ class TestBlob < Test::Unit::TestCase
     assert blob("ui/minified/jquery.effects.blind.min.js").vendored?
     assert blob("ui/minified/jquery.ui.accordion.min.js").vendored?
 
-
     # MooTools
     assert blob("public/javascripts/mootools-core-1.3.2-full-compat.js").vendored?
     assert blob("public/javascripts/mootools-core-1.3.2-full-compat-yc.js").vendored?
@@ -292,6 +342,18 @@ class TestBlob < Test::Unit::TestCase
     assert blob("public/javascripts/tiny_mce_popup.js").vendored?
     assert blob("public/javascripts/tiny_mce_src.js").vendored?
 
+    # AngularJS
+    assert blob("public/javascripts/angular.js").vendored?
+    assert blob("public/javascripts/angular.min.js").vendored?
+
+    # D3.js
+    assert blob("public/javascripts/d3.v3.js").vendored?
+    assert blob("public/javascripts/d3.v3.min.js").vendored?
+
+    # Modernizr
+    assert blob("public/javascripts/modernizr-2.7.1.js").vendored?
+    assert blob("public/javascripts/modernizr.custom.01009.js").vendored?
+
     # Fabric
     assert blob("fabfile.py").vendored?
 
@@ -320,10 +382,14 @@ class TestBlob < Test::Unit::TestCase
     # NuGet Packages
     assert blob("packages/Modernizr.2.0.6/Content/Scripts/modernizr-2.0.6-development-only.js").vendored?
 
+    # Html5shiv
+    assert blob("Scripts/html5shiv.js").vendored?
+    assert blob("Scripts/html5shiv.min.js").vendored?
+
     # Test fixtures
     assert blob("test/fixtures/random.rkt").vendored?
     assert blob("Test/fixtures/random.rkt").vendored?
-    
+
     # Cordova/PhoneGap
     assert blob("cordova.js").vendored?
     assert blob("cordova.min.js").vendored?
@@ -332,6 +398,19 @@ class TestBlob < Test::Unit::TestCase
 
     # Vagrant
     assert blob("Vagrantfile").vendored?
+
+    # Gradle
+    assert blob("gradlew").vendored?
+    assert blob("gradlew.bat").vendored?
+    assert blob("gradle/wrapper/gradle-wrapper.properties").vendored?
+    assert blob("subproject/gradlew").vendored?
+    assert blob("subproject/gradlew.bat").vendored?
+    assert blob("subproject/gradle/wrapper/gradle-wrapper.properties").vendored?
+
+    # Octicons
+    assert blob("octicons.css").vendored?
+    assert blob("public/octicons.min.css").vendored?
+    assert blob("public/octicons/sprockets-octicons.scss").vendored?
   end
 
   def test_language
diff --git a/test/test_heuristics.rb b/test/test_heuristics.rb
new file mode 100644
index 00000000..0c1a07ff
--- /dev/null
+++ b/test/test_heuristics.rb
@@ -0,0 +1,87 @@
+require 'linguist/heuristics'
+require 'linguist/language'
+require 'linguist/samples'
+
+require 'test/unit'
+
+class TestHeuristcs < Test::Unit::TestCase
+  include Linguist
+
+  def samples_path
+    File.expand_path("../../samples", __FILE__)
+  end
+
+  def fixture(name)
+    File.read(File.join(samples_path, name))
+  end
+
+  def all_fixtures(language_name, file="*")
+    Dir.glob("#{samples_path}/#{language_name}/#{file}")
+  end
+
+  def test_obj_c_by_heuristics
+    languages = ["C++", "Objective-C"]
+    # Only calling out '.h' filenames as these are the ones causing issues
+    all_fixtures("Objective-C", "*.h").each do |fixture|
+      results = Heuristics.disambiguate_c(fixture("Objective-C/#{File.basename(fixture)}"), languages)
+      assert_equal Language["Objective-C"], results.first
+    end
+  end
+
+  def test_cpp_by_heuristics
+    languages = ["C++", "Objective-C"]
+    results = Heuristics.disambiguate_c(fixture("C++/render_adapter.cpp"), languages)
+    assert_equal Language["C++"], results.first
+  end
+
+  def test_detect_still_works_if_nothing_matches
+    match = Language.detect("Hello.m", fixture("Objective-C/hello.m"))
+    assert_equal Language["Objective-C"], match
+  end
+  
+  def test_pl_prolog_by_heuristics
+    languages = ["Perl", "Prolog"]
+    results = Heuristics.disambiguate_pl(fixture("Prolog/turing.pl"), languages)
+    assert_equal Language["Prolog"], results.first
+  end
+  
+  def test_pl_perl_by_heuristics
+    languages = ["Perl", "Prolog"]
+    results = Heuristics.disambiguate_pl(fixture("Perl/perl-test.t"), languages)
+    assert_equal Language["Perl"], results.first
+  end
+  
+  def test_ecl_prolog_by_heuristics
+    languages = ["ECL", "Prolog"]
+    results = Heuristics.disambiguate_ecl(fixture("Prolog/or-constraint.ecl"), languages)
+    assert_equal Language["Prolog"], results.first
+  end
+  
+  def test_ecl_ecl_by_heuristics
+    languages = ["ECL", "Prolog"]
+    results = Heuristics.disambiguate_ecl(fixture("ECL/sample.ecl"), languages)
+    assert_equal Language["ECL"], results.first
+  end
+
+  def test_ts_typescript_by_heuristics
+    languages = ["TypeScript", "XML"]
+    results = Heuristics.disambiguate_ts(fixture("TypeScript/classes.ts"), languages)
+    assert_equal Language["TypeScript"], results.first
+  end
+
+  def test_ts_xml_by_heuristics
+    languages = ["TypeScript", "XML"]
+    results = Heuristics.disambiguate_ts(fixture("XML/pt_BR.xml"), languages)
+    assert_equal Language["XML"], results.first
+  end
+
+  def test_cl_by_heuristics
+    languages = ["Common Lisp", "OpenCL"]
+    languages.each do |language|
+      all_fixtures(language).each do |fixture|
+        results = Heuristics.disambiguate_cl(fixture("#{language}/#{File.basename(fixture)}"), languages)
+        assert_equal Language[language], results.first
+      end
+    end
+  end
+end
diff --git a/test/test_language.rb b/test/test_language.rb
index 6a4d3d7e..10c5f9a2 100644
--- a/test/test_language.rb
+++ b/test/test_language.rb
@@ -10,6 +10,7 @@ class TestLanguage < Test::Unit::TestCase
 
   def test_lexer
     assert_equal Lexer['ActionScript 3'], Language['ActionScript'].lexer
+    assert_equal Lexer['AspectJ'], Language['AspectJ'].lexer
     assert_equal Lexer['Bash'], Language['Gentoo Ebuild'].lexer
     assert_equal Lexer['Bash'], Language['Gentoo Eclass'].lexer
     assert_equal Lexer['Bash'], Language['Shell'].lexer
@@ -40,6 +41,7 @@ class TestLanguage < Test::Unit::TestCase
     assert_equal Lexer['REBOL'], Language['Rebol'].lexer
     assert_equal Lexer['RHTML'], Language['HTML+ERB'].lexer
     assert_equal Lexer['RHTML'], Language['RHTML'].lexer
+    assert_equal Lexer['Ruby'], Language['Crystal'].lexer
     assert_equal Lexer['Ruby'], Language['Mirah'].lexer
     assert_equal Lexer['Ruby'], Language['Ruby'].lexer
     assert_equal Lexer['S'], Language['R'].lexer
@@ -103,6 +105,7 @@ class TestLanguage < Test::Unit::TestCase
     assert_equal Language['Raw token data'], Language.find_by_alias('raw')
     assert_equal Language['Ruby'], Language.find_by_alias('rb')
     assert_equal Language['Ruby'], Language.find_by_alias('ruby')
+    assert_equal Language['R'], Language.find_by_alias('r')
     assert_equal Language['Scheme'], Language.find_by_alias('scheme')
     assert_equal Language['Shell'], Language.find_by_alias('bash')
     assert_equal Language['Shell'], Language.find_by_alias('sh')
@@ -191,12 +194,18 @@ class TestLanguage < Test::Unit::TestCase
 
   def test_markup
     assert_equal :markup, Language['HTML'].type
+    assert_equal :markup, Language['SCSS'].type
   end
 
   def test_data
     assert_equal :data, Language['YAML'].type
   end
 
+  def test_prose
+    assert_equal :prose, Language['Markdown'].type
+    assert_equal :prose, Language['Org'].type
+  end
+
   def test_other
     assert_nil Language['Brainfuck'].type
     assert_nil Language['Makefile'].type
@@ -205,7 +214,7 @@ class TestLanguage < Test::Unit::TestCase
   def test_searchable
     assert Language['Ruby'].searchable?
     assert !Language['Gettext Catalog'].searchable?
-    assert !Language['SQL'].searchable?
+    assert Language['SQL'].searchable?
   end
 
   def test_find_by_name
@@ -274,7 +283,7 @@ class TestLanguage < Test::Unit::TestCase
       bodies.each do |body|
         assert_equal([body, languages.map{|l| Language[l]}],
                      [body, Language.find_by_shebang(body)])
-        
+
       end
     end
   end
@@ -314,7 +323,7 @@ class TestLanguage < Test::Unit::TestCase
   def test_color
     assert_equal '#701516', Language['Ruby'].color
     assert_equal '#3581ba', Language['Python'].color
-    assert_equal '#f15501', Language['JavaScript'].color
+    assert_equal '#f1e05a', Language['JavaScript'].color
     assert_equal '#31859c', Language['TypeScript'].color
   end
 
@@ -369,7 +378,7 @@ class TestLanguage < Test::Unit::TestCase
   end
 
   def test_by_type
-    assert_equal 8, Language.by_type(:prose).length
+    assert !Language.by_type(:prose).nil?
   end
 
   def test_colorize
@@ -377,6 +386,15 @@ class TestLanguage < Test::Unit::TestCase
 <div class="highlight"><pre><span class="k">def</span> <span class="nf">foo</span>
   <span class="s1">&#39;foo&#39;</span>
 <span class="k">end</span>
+</pre></div>
+    HTML
+  end
+
+  def test_colorize_with_options
+    assert_equal <<-HTML.chomp, Language['Ruby'].colorize("def foo\n  'foo'\nend\n", :options => { :cssclass => "highlight highlight-ruby" })
+<div class="highlight highlight-ruby"><pre><span class="k">def</span> <span class="nf">foo</span>
+  <span class="s1">&#39;foo&#39;</span>
+<span class="k">end</span>
 </pre></div>
     HTML
   end
diff --git a/test/test_pedantic.rb b/test/test_pedantic.rb
index d6271dd7..2586f4ca 100644
--- a/test/test_pedantic.rb
+++ b/test/test_pedantic.rb
@@ -22,10 +22,10 @@ class TestPedantic < Test::Unit::TestCase
     file("languages.yml").lines.each do |line|
       if line =~ /^  extensions:$/
         extensions = []
-      elsif extensions && line =~ /^  - \.(\w+)$/
+      elsif extensions && line =~ /^  - \.([\w-]+)( *#.*)?$/
         extensions << $1
       else
-        assert_sorted extensions if extensions
+        assert_sorted extensions[1..-1] if extensions
         extensions = nil
       end
     end
diff --git a/test/test_repository.rb b/test/test_repository.rb
index 26025c09..832489d3 100644
--- a/test/test_repository.rb
+++ b/test/test_repository.rb
@@ -25,6 +25,12 @@ class TestRepository < Test::Unit::TestCase
     assert linguist_repo.size > 30_000
   end
 
+  def test_linguist_breakdown
+    assert linguist_repo.breakdown_by_file.has_key?("Ruby")
+    assert linguist_repo.breakdown_by_file["Ruby"].include?("bin/linguist")
+    assert linguist_repo.breakdown_by_file["Ruby"].include?("lib/linguist/language.rb")
+  end
+
   def test_binary_override
     assert_equal repo(File.expand_path("../../samples/Nimrod", __FILE__)).language, Language["Nimrod"]
   end
diff --git a/test/test_samples.rb b/test/test_samples.rb
index 5073f7b8..e0130282 100644
--- a/test/test_samples.rb
+++ b/test/test_samples.rb
@@ -1,7 +1,7 @@
 require 'linguist/samples'
+require 'linguist/language'
 require 'tempfile'
 require 'yajl'
-
 require 'test/unit'
 
 class TestSamples < Test::Unit::TestCase
@@ -35,4 +35,22 @@ class TestSamples < Test::Unit::TestCase
     assert_equal data['tokens_total'], data['language_tokens'].inject(0) { |n, (_, c)| n += c }
     assert_equal data['tokens_total'], data['tokens'].inject(0) { |n, (_, ts)| n += ts.inject(0) { |m, (_, c)| m += c } }
   end
+  
+  # If a language extension isn't globally unique then make sure there are samples
+  def test_presence
+    Linguist::Language.all.each do |language|
+      language.all_extensions.each do |extension|
+        language_matches = Language.find_by_filename("foo#{extension}")
+        
+        # If there is more than one language match for a given extension
+        # then check that there are examples for that language with the extension 
+        if language_matches.length > 1
+          language_matches.each do |language|
+            assert File.directory?("samples/#{language.name}"), "#{language.name} is missing a samples directory"
+            assert Dir.glob("samples/#{language.name}/*#{extension}").any?, "#{language.name} is missing samples for extension #{extension}"
+          end
+        end
+      end
+    end
+  end
 end