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The <code><nowiki>{{collapsible option}}</nowiki></code> template gives a standardised message for [[Wikipedia:Transclusion|transclusion]] on template pages whose templates include a ''state'' parameter (through which their collapsibility may be managed).

It may be used on either the template page itself (wrapped within <tt><nowiki><noinclude></noinclude></nowiki></tt> tags), or on the template's {{tl|documentation subpage}}.

===Indicating optional use of ''state'' name===
If, in a template where {{tlc|collapsible option}} has been transcluded, that template's ''state'' parameter has been enabled such that it need not be named when the template is called{{spaced ndash}}i.e., the ''state'' parameter includes <code><nowiki>{{{1| }}}</nowiki></code>, e.g.:
: <code><nowiki>|state = {{{state|{{{1|}}}}}}</nowiki></code>
: or
: <code><nowiki>|state = {{{state|{{{1|<noinclude>expanded</noinclude>}}}}}}</nowiki></code>
: etc
then...
: <code><nowiki>{{collapsible option |statename=optional}}</nowiki></code>
...removes the instances of {{para|state}} from the {{tlc|collapsible option}} message, meaning it will appear as:
<div style="clear:both;background:whitesmoke;">
{{collapsible option |statename=optional}}
</div>

===Changing default===
To change the ''state'' default from "autocollapse", use either "collapsed" or "expanded", as in the following:
{{clear}}
: <code><nowiki>{{collapsible option |state=collapsed}}</nowiki></code>
This will appear as:
<div style="clear:both;background:whitesmoke;">
{{collapsible option |state=collapsed}}
</div>
	 
== See also ==
* {{tl|Collapsible lists option}}
* {{tl|Collapsible sections option}}

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[[Category:Wikipedia metatemplates]]

[[es:Plantilla:Opción plegable]]
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