Files are added automatically to this category by placing the template {{backlog}} on their description pages. Do not add files to this category manually! Maintenance: Search for misplaced files using Special:Search or PetScan (will not work on categories shared by many templates).
This category includes categories and processes that are backlogged, or are often temporarily backlogged. It means that this category contains the Commons maintenance categories that are temporarily not empty. Also see Special:TrackingCategories.