Understanding the ActionScript Language > Using ActionScript syntax > Keywords |  |

Keywords

ActionScript reserves words for specific use within the language, so you can't use them as variable, function, or label names. The following table lists all ActionScript keywords:

`break` | `else` | `instanceof` | `typeof`
`case` | `for` | `new` | `var`
`continue` | `function` | `return` | `void`
`default` | `if` | `switch` | `while`
`delete` | `in` | `this` | `with`

For more information about a specific keyword, see its entry in the online ActionScript Dictionary in the Help menu.