With the Category Tree extension, installed on Wikimedia, one can click "+" to see the subcategories of a selected subcategory. list of subcategories how many there are is also displayed if there are no subcategories the header and count are not shown.However, hidden categories can be made visible by ticking the item Show hidden categories (described by Template:Msg) in the "Misc" section in the user's preference either way they can be made visible or invisible through CSS (details needed). When _HIDDENCAT_ is put on a category page, that category is not listed on pages thus categorised. These links do not appear at the location where you inserted the tag, but at the page margin in a fixed place, depending on the skin (the bottom for MonoBook, the upper right corner for Standard).Ĭategory tags may be placed anywhere in the article, although they are typically added to the end of the article to avoid undesirable text display side effects.Ĭategory links are displayed in the order they occur in the article, unlike the automatic ordering of lists in the category pages themselves (see below). Pages can be included in more than one category by adding multiple category tags. This lists the page on the appropriate category page automatically and also provides a link at the page to the category page, which is in the namespace "Category". To be specific, in order to add an article called "Albert Einstein" to the category "People", you would edit the article and add "]" (no quotes) into its page source somewhere. Substitute the actual name of the category in place of Category name. Individual wikis may have their own top-level categories, such as wikipedia:Category:Contents in Wikipedia.Ī page in any namespace can be put in a category by adding a category tag to the page (by convention, at the very end of the page), e.g.: For example: ]įor a complete list of categories, see Special:Categories. In order to reference a category within a page as a normal wiki link (without adding the page to the category) prefix the link name with a colon. You can assign a category to a page simply by adding "]" to the page's wikitext source. For a list of categories in the first sense, see Special:Categories. For a list of categories in this sense, see Special:Allpages/Category: (note the colon at the end). New categories can be created in the last sense, and edited, in the same way as any other regular page. "Existence" of a category has two independent aspects: the category can obtain one or more pages and/or the category page can exist as an editable page. The page of the category contains text that can be edited, like any other page, but when displaying the page, the last part of what is displayed is an automatically generated, alphabetical list of all pages in that category, in the form of links (in fact they are dispalyed in ASCII order). When a page belongs to one or more categories, this information appears at the bottom of the page (or in the upper-right corner, depending on the skin being used). For example, this page belongs to " Category:Wiki Help". 13.1 Category intersection, union, etc.Įach of the pages in the Category namespace represents a so-called category, a kind of grouping of related pages.11.1 Detection of additions to a category.11 Applying "Related Changes" to a category.6.3 Excluding templates and selected pages from categories.6 Using templates to populate categories.5.2 Grouping of pages by using sort keys.
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