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 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 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 (seeSpecial: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 category has abacklog that requires the attention of willing editors. This notice will hide itself when this category has fewer than 500 items.(recount)
Citation Style 1 templates{{cite book}} and{{cite encyclopedia}} do not support|periodical= (and aliases|journal=,|magazine=,|newspaper=,|website=,|work=) and associated|script-periodical= and|trans-periodical= (and their aliases).
To resolve this error:
use a more appropriate citation template, or
most common: change|title= to|chapter= (or appropriate alias) and then change|periodical= to|title=, or
change|work= to|series= if|title= is the actual title of the book and|work= contains the name of a book series, or
change|work= to another appropriate parameter (it has been used to hold values for|publisher=,|editor=,|via=, and more), or
move the content of the|periodical= parameter out of the template, before the closing </ref>, or
delete the|periodical= parameter
Pages with this error are automatically placed in Category:CS1 errors: periodical ignored.[a]
^Pages in the 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.
