Template:Subst only/doc

This is a documentation subpage for Template:Subst only.
It may contain 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 changing this template.

Note that this template itself should not be substituted.