By default, the standard UI controls include keyboard navigation inherited from Adobe Flex. For more information see Accessible components and containers in the Flex documentation.
In addition, you can create a more accessible UI by following these standards, which benefit accessibility:
- The Actions Menu standard promotes consistent wording and ordering of menu items.
- The Validation standard gives pointers for preventing conditions that are prone to error.
- The Messages and Confirmations standard describes how to handle a user-initiated action that cannot be reversed.
- The Progress Indicators standard describes how to provide feedback when users must wait.
- The Icons standard shows toolbar and message icons.
- The UI Text standard lists common terms and vocabulary.
- The Links standard promotes proper language and style for hypertext.
- The Help standard describes how to embed instructional text in the UI--keep it brief.
- The Navigator standard describes the standard workflow.
See also the recommended design practices on these web sites: