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|This is a maintenance category. It is used for maintenance of the Wikipedia project and is not part of the encyclopedia. It contains pages that are not articles, or it groups articles by status rather than subject. Do not include this category in content categories.|
This is the top level of Wikipedia's category system. Its subcategories contain various types of encyclopaedic content (e.g. articles and glossaries), content that assists with the navigation of the encyclopaedia (e.g. indexes and portals), as well as pages related to the maintenance of the encyclopaedia (e.g. Wikipedia administration and WikiProjects).