Help:Categorization

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For more detailed guidelines on creating and organizing categories, see Wikipedia:Help:Category. More technical information can be found at Wikipedia:Categorization.

Categories allow articles to be placed in one or more groups, and allow those groups to be further categorized. When an article belongs to a category, it will contain a special link to a page that describes the category. Similarly, when a sub-category belongs to a parent category, it will contain a special link to the parent category's page.

Each category page contains an introduction that can be edited like an article, and an automatically generated list of links to sub-categories and articles that belong to the category. Categories do not form a strict hierarchy or tree of categories, since each article can appear in more than one category, and each category can appear in more than one parent category. This allows multiple categorization schemes to co-exist simultaneously. It is possible to construct loops in the category space, but this is discouraged.

It is expected that most pages will be members of more than one category. Similarly, each category can be a member of more than one parent category.

Contents

Categories vs. Lists

Grouping articles into a category is not the same as making a list of articles. To make a list of articles, you edit the list directly; but to place articles into a category, you edit each article and insert a category tag by placing [[Category:category_name]] in the body of the text. This automatically adds those articles as a list on the category's page. Despite the difference in how they are maintained, it is sometimes convenient to think of a category as a list of articles. While an article may be in multiple lists, the goal is that browsing downwards from a list parent category, e.g. Category:People, should only arrive at articles that are about people, e.g. John Lennon, and not related articles e.g. 251 Menlove Avenue.

Further information on this topic can be found at Wikipedia:Categories, lists, and navigation templates.

Maintenance Categories

Some categories exist to aid maintenance of the UniWiki, for example, template categories and redirect categories. Maintenance categories are often added by templates,
{{...}}
rather than by the "wikilink" structure,
[[...]]
. Benefits of template usage include the ability to populate more than one category with a single template, inclusion of text to explain the rationale of a given categorization(s), the ability to readily include/exclude certain pages or types of pages, and so on. Contributors may monitor these maintenance categories for many reasons to include compliance with policies and guidelines that pertain to various conventions, such as page naming conventions.

Naming convention for Categories

See also: Wikipedia:Naming conventions (categories)

Use the UniWiki titling conventions of no unnecessary capital letters or abbreviations, i.e. use [[Category:Category examples]] instead of [[Category:Category Examples]]. Avoid ambiguities.

Lists

If the category collects articles, then avoid the word List in the name of the category, and use plurals, e.g. Category:Popes.

However, if the category collects lists, then using the word Lists in the name of the category is appropriate, e.g. Category:Lists of radio stations.

Topics

Use the topic name without indicating structure, e.g. [[Category:History of London]] instead of [[Category:History - Europe - UK - London]].

Editing articles

See also: MediaWiki User's Guide: Using Categories.

Adding an article to a category

To add an article to a category, edit the article and add [[Category:Surname]] at the bottom of the article.

For example: [[Category:Mind-body interventions]].

Linking to a category without categorizing

To link to the category page, put a colon before the word "category", inside the link, e.g.
[[:Category:United States]], which will appear as Category:United States.

Category tag location

Category tags should be placed at the bottom of the article, after the appendices (e.g. References and External links) and before any inter-wiki language links and stub templates (see UMoS:Layout). This ensures that when newcomers press "edit", they are immediately presented with the main article text, rather than the more esoteric category tags. It also ensures that the category tags are in a consistent place so they are easy to find when an editor is updating the categorization of a bunch of articles.

Maintaining categories

Restructuring categories

If you want to restructure existing categories, it is best to discuss your plans with others working in the same areas, or at least to announce your intentions. This is to avoid the situation where someone is placing an article into multiple categories, someone else is populating a category with multiple articles and parent categories, while someone else is trying to restructure part of the category tree, and nobody ends up with what they want.

Category page contents

Category pages exist to be a convenient cross-reference to related articles and other categories. A category page should contain a brief description of the purpose of the category. A prominent link to the most important article in the category is usually a good idea, but please avoid copying large quantities of text or images from an article to a category page. If a category and a page have a one-to-one correspondence, then the template {{main}} or similar is often the best solution. Introductions should be short and only navigation templates that facilitate moving between categories or category pages can be included.

See also

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