https://bugzilla.wikimedia.org/describekeywords.cgi has three keywords:
Personally I feel like I don't know enough myself (So Parser does not use Unit tests?) to set them.
Clarifying (documentation?) and simplifying thse three keywords (used on less than 250 tickets) could help QA, Release Management, and the bug wrangler.
Filing this here not to start the discussion here (discussion should happen by Greg kicking it off on QA mailing list and our weekly RelMgmt/QA meeting), but for me to not forget this topic (abusing Bugzilla as my public task list). :)