For those of you who don’t know this yet, if you’re migrating from AS2.0 to AS3.0 or if you’re constantly using AS3.0 to develop your projects, this is a very handy ActionScript 3.0 Migration PDF reference. It clearly shows the difference between AS2.0 and AS3.0 and tells you what to import when using certain objects, it also tells you what objects has been removed in AS3.0. Certainly good to have it with you when developing AS3.0 projects or if you’re starting to learn AS3.0. There are also other cheatsheets for other platforms like AIR and Papervision which can be found here.