From Wikipedia, the free encyclopedia
Collections of pages
Wikipedia information page
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.
Categories are not displayed in the
mobile version
. Mobile users can click "Desktop" at the bottom of a page to see the desktop version with categories. Registered users can enable
Advanced mode
which includes a "Categories" button.
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).
Category tree
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:
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:
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.
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.
Wikipedia categorization
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