[AAPI] ISSUE-980 questions about managed states

Rich,
Can you fill me on the background of "managed states"?

I'm working on (very old) issue 980 about the managed states section in Core-AAM being vague. Is there a list anywhere of which states are managed states? Or a rule I can use to derive a list?

Here's the issue: https://www.w3.org/WAI/ARIA/track/actions/980
And the section in Core-AAM http://w3c.github.io/aria/core-aam/core-aam.html#mapping_state-property
And the section in ARIA 1.1 http://www.w3.org/TR/wai-aria-1.1/#h-introstates

Thanks,
Cynthia