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 hidden category. It is not shown on its member pages, unless the corresponding user preference (Appearance → Show hidden categories) is set.

This list is populated by writing entering a value in the [glotto] field but not in the [iso3] field of Template:Infobox language. As ISO codes are assigned to these languages, the articles should be updated to remove them from this category.