Changes

= End user experience =

Screen reader users would be able to hear the role of the new type of object, and associated properties.

* If the object is focused, then any properties in the activeProperties or liveProperties would be spoken

* If the object is not focused, then any properties in the liveProperties would be treated as a polite change

= Accessibility API Support (ATK/AT-SPI and IAccessible2) =

Need to fill this out -- the idea is to use object attributes and events to indicate changed attributes.