It is used to build and maintain lists of pages—primarily for the sake of the lists themselves and their use in article and category maintenance. It is not part of theencyclopedia's categorization scheme.
These categories are 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.
These categories also serve to aggregate members of several lists or sub-categories into a larger, more efficient list (discriminated by classifications).
Administrators: Please do not delete this category even if it is empty! This category may be empty occasionally or even most of the time.
This is a tracking category forCS1 citations that have title-holding parameters containing external links.
This error occurs when any of theCS1 orCS2 citation title-holding parameters –|title=,|chapter=,|publisher=,|work= or any of its aliases:|journal=,|magazine=,|newspaper=,|periodical= and|website= – hold an external link (URL). External links in these parameters corrupt the citation's metadata and can be the source of a variety of other error messages.
To resolve this error, remove the external link from the identified parameter. Consider placing the external link in a more appropriate parameter:
for|chapter=, the URL may belong in|chapter-url=.
for other parameters, it may belong in|url=.
Pages with this error are automatically placed in Category:CS1 errors: external links.[a]
↑Pages in the Book talk, Category talk, Draft talk, File talk, Help talk, MediaWiki talk, Module talk, Portal talk, Talk, Template talk, User, User talk, and Wikipedia talk namespaces are not included in the tracking categories. In addition, pages with names matching the patterns '/[Ss]andbox', '/[Tt]estcases', '/[^/]*[Ll]og', and '/[Aa]rchive' are not included in the tracking categories.