This is an archived snapshot of W3C's public bugzilla bug tracker, decommissioned in April 2019. Please see the home page for more details.
Most of ARIA talks about how to expose things but not much about how ATs can activate things. 3.7 may cover it. Cynthia, look at whether this is different in UIA where things can have multiple actions and different patterns.
Not sure what 3.7 was when this bug was last updated. I think it might be Actions which is now 4.7.