ActionScript 4 specification archive
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ActionScript 4 Language Reference, Virtual Machine Specification and White Paper

Adobe and ActionScript are either registered trademarks or trademarks of Adobe Systems Incorporated in the United States and/or other countries. All other trademarks are the property of their respective owners. No right or license is granted to any Adobe trademark.

Adobe is publishing the ActionScript 4 specifications in the hope that they may be useful to the programming language and managed runtime communities. The specifications are as they existed when the project with which they were associated was discontinued and therefore may be considered incomplete. Source code for the compiler and runtime is not available. Adobe has no plans to resume development of ActionScript 4.

The Latex source code (the .tex files) for the Language Reference and White Paper is licensed under the Apache License Version 2.0, while the corresponding specifications are licensed under the Creative Commons Attribution Non-Commercial 3.0 License. The Virtual Machine Specification draft, which is a text file, is licensed under the Apache License Version 2.0.