උදවු:Categories
Categories are used in Wikipedia to link articles under a common topic and are generally found at the bottom of the page. Clicking the category name displays a list of pages (articles) and sub-categories within it.
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 is shown below:
The actual relationship can be a little more complex as a category may appear as a subcategory of several other categories.
The top level categories of interest to readers are Category:Articles and Category:Contents, as all articles can be found from these.