diff --git a/script.py b/script.py
index 6467b73..04445a8 100644
--- a/script.py
+++ b/script.py
@@ -455,6 +455,9 @@ def isPostExists(POST):
 
     possibleExtensions = [".jpg",".png",".mp4",".gif",".webm",".md"]
 
+    """If you change the filenames, don't forget to add them here.
+    Please don't remove existing ones
+    """
     for extension in possibleExtensions:
 
         OLD_FILE_PATH = PATH / (
@@ -481,6 +484,8 @@ def isPostExists(POST):
         return False
 
 def downloadPost(SUBMISSION):
+
+    """Download directory is declared here for each file"""
     directory = GLOBAL.directory / SUBMISSION['postSubreddit']
 
     global lastRequestTime
diff --git a/src/downloader.py b/src/downloader.py
index f84c66a..271d7ad 100644
--- a/src/downloader.py
+++ b/src/downloader.py
@@ -102,6 +102,8 @@ class Erome:
             
             extension = getExtension(IMAGES[0])
 
+            """Filenames are declared here"""
+
             title = nameCorrector(post['postTitle'])
             print(post["postSubmitter"]+"_"+title+"_"+post['postId']+extension)
 
@@ -237,8 +239,11 @@ class Imgur:
                 post['mediaURL'] = content['object'].link
 
             post['postExt'] = getExtension(post['mediaURL'])
-
+            
             title = nameCorrector(post['postTitle'])
+
+            """Filenames are declared here"""
+
             print(post["postSubmitter"]+"_"+title+"_"+post['postId']+post['postExt'])
 
             fileDir = directory / (
@@ -297,6 +302,8 @@ class Imgur:
                             + "_"
                             + images[i]['id'])
 
+                """Filenames are declared here"""
+
                 fileDir = folderDir / (fileName + images[i]['Ext'])
                 tempDir = folderDir / (fileName + ".tmp")
 
@@ -396,9 +403,12 @@ class Gfycat:
             raise NotADownloadableLinkError("Could not read the page source")
 
         POST['postExt'] = getExtension(POST['mediaURL'])
-
+        
         if not os.path.exists(directory): os.makedirs(directory)
         title = nameCorrector(POST['postTitle'])
+
+        """Filenames are declared here"""
+
         print(POST["postSubmitter"]+"_"+title+"_"+POST['postId']+POST['postExt'])
 
         fileDir = directory / (
@@ -453,6 +463,9 @@ class Direct:
         POST['postExt'] = getExtension(POST['postURL'])
         if not os.path.exists(directory): os.makedirs(directory)
         title = nameCorrector(POST['postTitle'])
+
+        """Filenames are declared here"""
+
         print(POST["postSubmitter"]+"_"+title+"_"+POST['postId']+POST['postExt'])
 
         fileDir = directory / (
@@ -475,6 +488,9 @@ class Self:
         if not os.path.exists(directory): os.makedirs(directory)
 
         title = nameCorrector(post['postTitle'])
+
+        """Filenames are declared here"""
+
         print(post["postSubmitter"]+"_"+title+"_"+post['postId']+".md")
 
         fileDir = directory / (
@@ -494,7 +510,8 @@ class Self:
     
     @staticmethod
     def writeToFile(directory,post):
-
+        
+        """Self posts are formatted here"""
         content = ("## ["
                    + post["postTitle"]
                    + "]("