In particular, follow conventions for user interface design, default keyboard configuration, product installation, and documentation. 6.2 Conform to W3C specifications when they are appropriate for a task. 7.8 Allow the user to configure structured navigation. 3.10 Allow the user to turn on and off automatic content refresh. Maintain consistent user agent behavior and default configurations between software releases.
Consistency is less important than accessibility and adoption of operating system conventions.
10.7 Provide default input configurations for frequently performed operations. 10.8 Allow the user to configure the graphical arrangement of user interface controls. 8.7 Allow the user to configure what information about links to present.