Used to insert <nowiki>...</nowiki> tag (or, if no {{{1}}} parameter content is given, a self-closing <nowiki /> tag) in a substituted template. The resulting tag will be processed as a real tag by further substitutions and transclusions, so this should not be used for documentation. Rather, it is used by metatemplates to generate nowiki tags.

{{<includeonly>subst:</includeonly>Nowiki|{{{1}}}}}

If the template call is already within an includeonly block, the includeonly tags should be omitted. Substitution is required, but must only be used during inclusion; otherwise, the template will be substituted with includeonly tags immediately, and the desired effect will be lost.

တမ်းပလိတ်:Metatemplate doc