Help:Categorization
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Categories are pages on Wikifunctions intended to group similar pages together. Categories can also house subcategories, which help sort Wikifunctions further.
Creating categories
Categories can be created by creating a page in the Category namespace. Categories can also be added to category pages, making them subcategories.
Adding pages to categories
In order to add a page to a category, you have to link it on the page. Adding [[Category:Help]] to the bottom of this page would add this page to Category:Help. In order to link to a category without adding a page to it, add an extra colon at the beginning. For example, [[:Category:Help]] displays like the link above.
Alternatively, some templates automatically add pages to categories. For example, adding {{Deprecated function}} to a function's talk page will add it to Category:Deprecated functions.
There are two ways to change the sortkey of a page (for example, sorting "Albert Einstein" as "Einstein, Albert"). In order to change the sortkey of the page for every category it is in, use the {{DEFAULTSORT:Sortkey}} magic word. To change the sortkey for just one category, use [[Category:Example|Sortkey]].
Category placement
Generally, categories should be wikilinked to at the bottom of a page. There are more specific rules for different types of pages.
- Instead of adding categories to functions and implementations, you must place all categories on the corresponding talk page. For example, if someone wanted to categorize Z20597 as a English natural language generation function, they would have to place it on Talk:Z20597.
- In order to categorize templates, you have to place categories on the documentation subpage, using {{doc}}.
Displaying categories
Categories are automatically displayed at the bottom of a page on desktop.[note 1] However, categories can be marked as hidden categories by adding {{Hidden category}} to the category page. This is useful for error-tracking categories. Registered users can unhide hidden categories at Preferences → Appearance → Advanced options → 
Show hidden categories.
See also
- Help:Category on the English Wikipedia, about the technical details behind MediaWiki categories
- Special:Categories, a list of categories on Wikifunctions
Notes
- ↑ On mobile, these would normally not display. However, as of July 2026, Wikifunctions has no separate mobile view, meaning by default categories will display.