Follow operating environment conventions that benefit accessibility. In particular, follow conventions that benefit accessibility for user interface design, keyboard configuration, product installation, and documentation.
Normative inclusions and exclusions
For the purposes of this checkpoint, an operating environment convention that benefits accessibility is either
one identified as such in operating environment design or accessibility guidelines, or
one that allows the author to satisfy any requirement of the "Web Content Accessibility Guidelines 1.0" or of the current document.
This checkpoint excludes the requirements of checkpoints 7.1 and 7.4.