This is a tracking category.
It is used to build and maintain a list or lists of pages—primarily for the sake of the lists themselves and their use in article and category maintenance. It is not part of the encyclopedia's categorization scheme.
More information:
- This category is hidden on its member pages—unless the corresponding user preference (Appearance → Show hidden categories) is set.
- These categories are 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 subcategories into a larger, more efficient list (discriminated by classifications).
- Typically, tracking categories are automatically populated by templates invoked in pages or by the MediaWiki software (see Special:TrackingCategories for an overview of the latter).
Administrators: Please do not delete this category as empty!
This category may be empty occasionally or even most of the time.This tracking category lists pages with CS1 citations that use |url-status=usurped or |url-status=unfit.
The keywords unfit and usurped are intended to identify original URLs that point to live sites that are inappropriate: spam, advertising, porn, etc.
A URL that returns a HTTP 404 error is not considered to be unfit and, in such cases, editors should set |url-status=dead.
CS1 and CS2 templates in pages listed in this category should be checked to ensure that the unfit and usurped keywords are correctly applied.
Only Module:Citation/CS1 should directly add pages to this category.
Other values
|url-status=bot: unknownis tracked at Category:CS1 maint: bot: original URL status unknown.|url-status=deadis not tracked.|url-status=liveis not tracked.|url-status=deviatedis not tracked.|url-status=<anything else>is tracked at Category:CS1 errors: invalid parameter value.