https://wiki.tachyony.co.uk/w/index.php?action=history&feed=atom&title=Help%3ACategoriesHelp:Categories - Revision history2026-05-15T15:32:20ZRevision history for this page on the wikiMediaWiki 1.35.5https://wiki.tachyony.co.uk/w/index.php?title=Help:Categories&diff=4516&oldid=prevTachyony: Imported page2021-12-19T15:58:03Z<p>Imported page</p>
<p><b>New page</b></p><div>{{Short description|Collections of pages}}<br />
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{{For|more extensive information for editors|Help:Category}}<br />
{{Information page|H:CATS}}<br />
{{Reader help}}<br />
'''Categories''' are used in Wikipedia to link articles under a common topic and are found at the bottom of the article page. Clicking the category name displays a list of articles in that category, below a list of sub-categories (''categories'' in that category) (if any). Categories allow readers to navigate through Wikipedia and find related articles.<br />
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Categories are not displayed in the [[Help:Mobile access|mobile version]]. Mobile users can click "Desktop" at the bottom of a page to see the desktop version with categories. Registered users can enable [[:mw:Reading/Web/Advanced mobile contributions|Advanced mode]] which includes a "Categories" button.<br />
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[[File:Chicken Eyeglasses categories.png|center|thumb|900x900px|The bottom of the Wikipedia article [[Chicken eyeglasses]]. At the very bottom of the page, below the References, navigation templates and external links are a series of links. These links are the categories used on the page, which include: [[:Category:Animal welfare]], [[:Category:Animal equipment]], [[:Category:Eyewear]], and [[:Category:Poultry farming]]. By clicking on the category link at the bottom of the page, readers can navigate the Category tree (see below).]]<br />
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==Category tree==<br />
All of the categories form a hierarchy, although sub-categories may be a member of more than one category. An example of a small part of this hierarchical structure looks somewhat like this:<br />
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{| align = "center"<br />
|<br />
[[:Category:Main topic classifications]]<br />
↓<br />
[[:Category:History]]<br />
↓<br />
[[:Category:History by location]]<br />
↓<br />
[[:Category:History by country]]<br />
↓<br />
[[:Category:History of Australia]]<br />
↓<br />
[[:Category:History of Australia by location]]<br />
↓<br />
[[:Category:History of Australia by state or territory]]<br />
↓<br />
New South Wales, Queensland, etc.<br />
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|}<br />
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The actual relationship is more complex since a category may appear as a subcategory of several other categories. The actual relationship of part of the category structure looks like this:<br />
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[[File:Category-diagram.png|border|400px|center]]<br />
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The uppermost category in the hierarchy is [[:Category:Contents]]. From here all other categories branch out, including those that are used for the maintenance of Wikipedia.<br />
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If an entry in a category is shown in ''italics'' it is a redirect to an article of a different name or a section of an article that contains information about that particular subject.<br />
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{{Wikipedia categorization navbox}}<br />
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[[Category:Reader help]]<br />
[[Category:Wikipedia categorization|*]]</div>Tachyony