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. This is a tracking category. It builds and maintains a list of pages primarily for the sake of the list itself. They are not part of the encyclopedia's categorization scheme. This category is hidden on its member pages—unless the corresponding user preference (Appearance → Show hidden categories) is set. These categories can be used to track, build and organize lists of pages needing "attention en masse" (for example, pages using deprecated syntax), or that may need to be edited at someone's earliest convenience. These categories also serve to aggregate members of several lists or sub-categories into a larger, more efficient list (discriminated by classifications).

Shortcut CAT:EMPTY

This is an administrative category for category description pages that have been tagged as empty using {{db-c1}} or {{db-catempty}}, and will be eligible for deletion after that tag has remained in place for seven days. Categories emptied out of process are not eligible for speedy deletion under C1.

For empty categories ready to be deleted, see Category:Candidates for speedy deletion as empty categories.