This is a maintenance category, used for maintenance of the Wikipedia project. It is not part of the encyclopedia and contains non-article pages, or groups articles by status rather than subject. Do not include this category in content categories.

Be advised, long ago BetacommandBot created the Category pages with a different name than the Project page. The Template:WPBannerMeta required Category:WikiProject Lists articles. However Category:WikiProject Lists articles by importance does not exist, instead this project uses Category:List articles by importance.