While Notepad++ is a very useful freeware program for editing all sorts of code and syntax, it's code highlighting feature leaves a lot to be desired for Flash ActionScript. Not only do .as files default to Haskell, but the syntax highlighting hasn't been updated since ActionScript 2.

This download intends to fix the Haskell issue and add a lot of commands, classes, functions and variables to the language dictionary. The ZIP archive contains two files: langs.xml and langs.model.xml. To use this update, copy and replace the files in Notepad++'s directory, usually located in C:\Program Files (x86)\Notepad++\.