Template:Fix comma category/doc

This is a documentation subpage for Template:Fix comma category (see that page for the template itself).
It contains usage information, categories, and other content that is not part of the original template page.

This template is used on many pages and changes may be widely noticed. Test changes in the template's /sandbox or /testcases subpages, or in your own user subpage. Consider discussing changes on the talk page before implementing them.

This template uses Lua:

Module:String

Repairs dated maintenance categories broken by use of parser functions such as {{formatnum:}}