Template:Collapsible option/doc

{{Collapsible option}} provides a standardised message for transclusion on the pages of collapsible templates whose collapsibility may be managed by the parameter state.

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

Indicating optional use of state name

The state parameter used to manage collapsible templates need not always be named explicitly, i.e. {{[Template name]|state}} can be the same as {{[Template name]|state=state}}. To indicate this in the {{Collapsible option}} message, add the parameter |statename=optional. This modifies the message so that it reads (if it were used for itself):

How to manage this template's initial visibility
To manage this template's visibility when it first appears, add the parameter:

|state=collapsed to show the template in its collapsed state, i.e. hidden apart from its titlebar – e.g. {{Collapsible option |state=collapsed}}

|state=expanded to show the template in its expanded state, i.e. fully visible – e.g. {{Collapsible option |state=expanded}}

|state=autocollapse to show the template in its collapsed state but only if there is another template of the same type on the page – e.g. {{Collapsible option |state=autocollapse}}

Unless set otherwise (see the |state= parameter in the template's code), the template's default state is autocollapse.

(This possibility is enabled by including:

• {{{1|}}} as part of a collapsible template's state parameter – for instance, as |state={{{state|{{{1|}}}}}} or |state={{{state|{{{1|<noinclude>expanded</noinclude>}}}}}}, etc.
• <noinclude>,<includeonly>as part of a collapsible template's state argument – for instance, as |state={{{state<includeonly>|collapsed</includeonly>}}}

Changing the default state reported

To change the default state {{Collapsible option}} reports in its second bullet-point, add the parameter |default=collapsed or |default=expanded accordingly. To restore the default report, remove any |default= previously included.

nobase

If the template name given to {{Collapsible option}} includes a (forward-)slash character ("/"), the parameter |nobase= (set to "on", "true", etc.) will need to be added so that the name is displayed correctly (i.e. so that {{PAGENAME|}} rather than the default {{BASEPAGENAME|}} is used to display it).