Cheat Sheet It is easy to transition to Haxe from ActionScript. In fact, the Haxe programming language was created by Flash developers. It started with MTASC, the open-source ActionScript 2 compiler, and evolved to the Haxe we love and know today. Haxe supports many advanced features ActionScript wishes it supported. This is a "cheat sheet" with a list of areas where Haxe and Actionscript 3 differ