Template:Require substitution

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

{{safesubst:<noinclude />require substitution
   | ... (normal template code) ...
}}

{{require substitution}} – Prints an error unless substituted.
{{ifsubst}} – 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.
- {{frequently substituted}} – Notice displayed in the documentation of substitution templates notifying the user that the template is widely used.
- {{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.
- {{can be substituted}} – For the doc of templates whose substitution is optional.
- {{may be substituted}} – Same as the template above, but with the adverb may being used in the notice (instead of can).
- {{substitution}} – Allows free-fill description of whether the template should be substituted and under what conditions.
{{issubst}} – Returns "yes" if substituted.
{{error:must be substituted}} – Error message that can be used to warn the user
{{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.

See also