Template:Require substitution/doc

This is a documentation subpage for Template:Require substitution.
It may contain usage information, categories and other content that is not part of the original template page.

Usage

Metatemplate that can be wrapped around a template that requires substitution.

{{ {{{|safesubst:}}}require subst
   | ... (normal template code) ...
}}

List of subst helper templates

{{require substitution}} – Prints an error unless substituted.
{{substituted or transcluded}} – if-then-else metatemplate that checks if a template is currently being substituted or transcluded
- {{always substitute}} – For the doc of the above templates; prints a message asking for it be substituted.
- {{never substitute}} – The reverse of {{always substitute}}. For the doc of templates which should not be substituted; prints a message asking for it not to be substituted.
- {{may be substituted}} – For the doc of templates whose substitution is optional.
- {{substitution}} – Allows free-fill description of whether the template should be substituted and under what conditions.
{{ifsubst}} – Forks if substituted or not.
{{issubst}} – Returns "yes" if substituted.
{{HTML comment}} – To sign substitutions with comments that contain wikitext expansions
Module:Unsubst – Prevents substitution.
Module:Unsubst-infobox – Prevents substitution for infoboxes, cleans up parameters.