Editing Encyclopedia:Username policy (section)

=== Exceptions ===
Some usernames that appear to be in breach of this policy have been allowed to stand by consensus because they were created before a change in the policy that would now prohibit such names ''(see [[grandfather clause]])''. If you find an apparently problematic username being used by a long-standing editor, it is likely that the matter has been discussed before. Please search that user's talk page (and archives if applicable), ''and'' the archives of the [[Wikipedia:Administrators' noticeboard|administrators' noticeboards]] and [[Wikipedia:Requests for comment/User names|requests for comment on usernames]], before deciding to take action as described [[#Dealing with inappropriate usernames|below]].