Init commit with many years of arduino sketches and projects. I dont know if the esp8266 includes much, but there are also libraries. I hope they dont have crazy automatic versioning through the Arduino IDE.

libraries/Arduino-LiquidCrystal-I2C-library-master/examples/BlinkingCursor/BlinkingCursor.ino

@@ -0,0 +1,32 @@
+#include <Wire.h> 
+#include <LiquidCrystal_I2C.h>
+
+// Set the LCD address to 0x27 for a 16 chars and 2 line display
+LiquidCrystal_I2C lcd(0x27, 16, 2);
+
+void setup()
+{
+	// initialize the LCD
+	lcd.begin();
+}
+
+void loop()
+{
+	bool blinking = true;
+	lcd.cursor();
+
+	while (1) {
+		if (blinking) {
+			lcd.clear();
+			lcd.print("No cursor blink");
+			lcd.noBlink();
+			blinking = false;
+		} else {
+			lcd.clear();
+			lcd.print("Cursor blink");
+			lcd.blink();
+			blinking = true;
+		}
+		delay(4000);
+	}
+}