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This is amaintenancecategory, used formaintenance of the Wikipedia project. It is not part of the encyclopedia and containsnon-article pages, or groups articles by status rather than subject. Do not include this category in content categories (except foreponymous maintenance categories).

This is atracking category. It builds and maintains a list of pages primarily for the sake of the list itself. They are not part of theencyclopedia's categorization scheme.

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• These categories can be used to track, build and organize lists of pages needing "attentionen masse" (for example, pages using deprecated syntax), or that may need to be edited at someone's earliest convenience.
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This category combines all articles with failed verification from April 2011(2011-04) to enable us to work through the backlog more systematically. It is a member ofCategory:Articles with failed verification.
To add an article to this category add {{Failed verification|date=April 2011}} to the article. If you omit the date abot will add it for you at some point.

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