The Adobe Flex 2 Language ReferenceActionScript 3.0 Language and Components Reference contains these appendices:
| Appendix | Description | |
|---|---|---|
| Compiler Errors | List and explanations of compiler error codes. | |
| Compiler Warnings | List and explanations of compiler warning codes. | |
| Run-Time Errors | List and explanations of run time error messages. | |
| ActionScript 2.0 Migration | List of differences between ActionScript 2.0 and 3.0. | |
| Character Set Codes | List of character set definitions supported by Flash Player. | |
| What's New | List of recent changes in the ActionScript APIs. |
