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This template is used on approximately 308,000 pages, or roughly 1% of all pages.
To avoid major disruption and server load, any changes should be tested in the template's /sandbox or /testcases subpages, or in your own user subpage. The tested changes can be added to this page in a single edit. Consider discussing changes on the talk page before implementing them.

This template is for use on category pages (in the Category: namespace), producing a hatnote describing the category. It takes a single parameter – the category description – producing the hatnote:

This category is for

followed by that description. Any spaces surrounding the parameter are removed, and a space is inserted before it. It should be worded so as to make the result a complete English sentence. A period (full stop) will be added to the end if the parameter does not already end with a period. The hatnote is indented and on a new line (technically, in a new <div>).

Examples

This code: ((Category explanation|articles related to [[foo]])) produces:
This category is for articles related to foo.
This code: ((Category explanation|articles related to [[foo]].)) produces:
This category is for articles related to foo.
This code: ((Category explanation|articles related to [[foo]]:)) (undesirably) produces:
This category is for articles related to foo:.

Redirects

((About cat))
((Cat about))
((Category about))
((Catexp))
((Cat exp))
((Category description))
((Cat description))

v t e Hatnote templates for category pages
About	((Category explanation)) ((Category main article)) ((Category main section)) ((Main category)) ((Category more)) ((Category more if exists))
See also	((Category see also)) ((Category see also if exists)) ((Category see also if exists 2)) ((Category pair)) ((Preceding category)) ((Succeeding category))
Distinguish	((Category distinguish)) ((Category contrast))
Outline Category:Hatnote templates for category pages See also other category-header templates

Other category-header templates

Category-heading templates

Templates meant to appear at or near the top of category pages

By namespace

Category	((Category explanation)) ((Parent-only stub category)) ((Regional stub category)) ((Set category)) ((Stub category)) ((Topic category))
File	((Category game screenshot header)) ((File category)) ((File template notice)) ((Image template notice1)) ((Media template notice))
Other	((Help category)) ((Maintenance category)) ((Portal category)) ((Sockpuppet category)) ((Template category)) ((User category))

Maintenance

See also: Category hatnote templates

The above documentation is transcluded from Template:Category explanation/doc.
Editors can experiment in this template's sandbox and testcases pages.
Add categories to the /doc subpage. Subpages of this template.

Examples

Redirects

See also

Other category-header templates