Presently section four, allowed descendant of ARIA roles, is marked as non-normative.
The next version of ARIA in HTML will be revising this section to create both normative and non-normative sub-sections. Things we should keep / expand upon:
Examples of non-conforming descendants with explanations as to why.
more clearly calling out explicit roles and their specific restrictions - 'whys' would be covered in related examples.
making a parallel to the kinds of content different ARIA roles represent should remain, but downplayed in comparison to the normative requirements.
if possible we should make reference to the role categorizations that the ARIA spec has already defined (widget, doc structure, landmark, live regions, and window roles)
Presently section four, allowed descendant of ARIA roles, is marked as non-normative.
The next version of ARIA in HTML will be revising this section to create both normative and non-normative sub-sections. Things we should keep / expand upon: