Sometimes it would be helpful to explain a change to a wiki (a spec for example) by linking to a case, but you don't want to put the case link in the body of the article. using the source control checkin comment method would work well:
- Discussion in case 1234 dictates a change to a spec
- Edit the wiki article of the spec
- Save the change with the comment "bugzid:1234" or "case 1234"