The ActionScript 3.0 Language Reference is a reference manual for the application programming interfaces (APIs) for Adobe Flash Professional, Flash Player and Adobe AIR.

This version includes ActionScript classes, methods, and properties that support the Adobe AIR runtime environment. Where possible, the AIR-specific items are indicated by the small AIR icon next to their names:

This manual provides information on the syntax and usage of supported elements in the ActionScript language. It includes the following sections:

Language elements, such as globals, operators, statements, keywords, directives, and special types
Packages
Alphabetical entries for class elements
An index containing all entries
An appendix that compares some key language and API changes from ActionScript 2.0 to ActionScript 3.0
Appendixes of errors and warnings with annotations
Appendixes with reference information about using XML to support motion tweens and FLVPlayback captioning.
Appendixes with reference information about using databases with Adobe AIR.

Screenshots: