PF/ARIA/BestPractices/UAImplementation
User Agent Implementation Considerations
Managing Showing and Hiding document sections
Notification of changes to sections
ARIA to Accessibility API Events
Role Mappings
Mapping to platform accessibility APIS
User agents should map ARIA role and property semantics to the closest appropriate matches in their supported accessibility API. When it is not possible to find an exact match for a given role or property, API extensions should be utilized to expose the complete information.