Category:Templates using YearParamUsageCheck

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This is a tracking category

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. They are not part of the encyclopedia's categorization scheme.

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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 sub-categories into a larger, more efficient list (discriminated by classifications).

Templates which use {{YearParamUsageCheck}} to track the use of year parameters.

The tracking categories are all subcats of Category:YearParamUsageCheck tracking categories

This category "Templates using YearParamUsageCheck" is from Wikipedia if otherwise notified.