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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).

This category has a backlog that requires the attention of willing editors. This notice will hide itself when this category has fewer than 10 items. ( recount)

Articles that use {{ Infobox television episode}} using |series=, |prev= or |next=, or {{ Infobox television crossover episode}} using the numbered versions |series1=, |prev1= or |next1=, etc. with unlinked values. These values should be linked to either an article or a redirect. Unlinked entries aren't helpful to our readers and these values always have a valid destination.

The articles are sorted into the category using the parameter name as the sort key. Note that a page can have multiple errors but will appear only under one sort key.