Editing Template:Documentation subpage

<includeonly>{{ #ifeq:{{SUBPAGENAME}}|{{ #ifeq: {{{1}}}|override|{{SUBPAGENAME}}|doc}}|</includeonly><!-- show on doc pages only
--><div class="messagebox" style="text-align:center">
This [[template:documentation|documentation subpage]] contains instructions, categories, or other information that is not part of the {{lc:{{SUBJECTSPACE}}}}.<br />To view the {{SUBJECTSPACE}} page itself, see {{{1|[[{{SUBJECTSPACE}}:{{BASEPAGENAME}}]]}}}.</div>{{{category|[[Category:Template documentation|<noinclude> </noinclude><includeonly>{{PAGENAME}}</includeonly>]]}}}
<includeonly>}}</includeonly><noinclude>{{documentation}}</noinclude>