To indicate text is a variable name. Use for any variable names except those including "I" (uppercase i) and/or "l" (lowercase L); for these, {{varserif}} should be used to ensure a noticeable distinction.
To display parameters as used in code (i.e. with triple braces), especially to indicate relationships between them. May be combined with {{para}} above.
(or {{dc}} ) To indicate deprecated source code in template documentation, articles on HTML specs, etc. The {{dc2}} variant uses strike-through (<blink>) while {{dc|red{{=}}y}} uses red (<blink>).
Intended for transclusion at the end of the documentation for each of the main Semantic markup templates, e.g. as part of a "See also" section such as:
shows the template collapsed to the title bar if there is a {{navbar}}, a {{sidebar}}, or some other table on the page with the collapsible attribute
shows the template in its expanded state if there are no other collapsible items on the page
If the |state= parameter is not set, the template's initial visibility is taken from the |default= parameter in the template. For this template, that currently evaluates to collapsed.