I accidentally checked the box on a question. Can this be undone?
Yes—community moderators, at their discretion, can now remove community wiki status from particular posts.
Back when we had certain triggers to automatically convert certain posts into community wiki, this would also inoculate those specific posts from ever being auto-converted to community wiki again.
There are no more automatic conversions, but in the past, we felt the automatic "force community wiki" thresholds were correct:
- after 30 answers (15 on Super User and Programmers, 60 on Code Golf) are added to a question
- after a post is edited by more than 5 different users
- after a post is edited by the owner 10 distinct times
If you feel your post has been unfairly converted to community wiki and deserves treatment in lines with the new policy, you can flag it for moderator attention and plead your case to a community moderator.