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AClassification is used on category pages to show the hierarchy of the category. For example,Category:Contraltos has this classification:
The easiest way to create a classification is to use a template if there is one that is appropriate. See thetemplate section below. If there is no template that will work you can add a classification by manually editing a category to insert links. The classification forContraltos was created with this text:
<div>'''Classification: '''[[:Category:Performing arts|Performing arts]]: [[:Category:Theatrical genres|Genres]]: [[:Category:Opera|Opera]]: [[:Category:Opera singers|Singers]]: [[:Category:Singers by voice type|By voice type]]: '''Contraltos'''</div><div>''also:'' [[:Category:Music|Music]]: [[:Category:Music genres|Genres]]: [[:Category:Opera|Opera]]: [[:Category:Opera singers|Singers]]: [[:Category:Singers by voice type|By voice type]]: '''Contraltos'''</div>It looks like this:
Notes:
<div...>...</div> does).Multiple classifications are possible. List the second one on the next line. Instead beginning the line with'''Classification:''' type''also:''. You don't have to add a classification for every possible hierarchy. Sometimes, the hierarchy is just a link between different hierarchies.
For example:Category:African-American actors is part of the hierarchy underCategory:African Americans. It is also a subcategory ofCategory:American actors. It is one of just a few sub-groupings under American actors (not all ethnicities are subcategories of American actors), and the entries are duplicated in both categories. This is because they are in effect just related categories. Instead of showing that connection as a classification, it might make more sense to just put a link such asSee also:Category:American actors.
Another option, when a category is a subcategory of multiple parent categories of the same level, all themselves subcategories of a single "grandparent", is to use commas and "and" to show them all in the classification, in shortened form. Theserial comma is recommended, for clarity. Example:
There are several templates to help classify categories (and more on the way). It is much easier to use a template than to set it up manually. Here are the templates that currently exist. See the discussion page for the template for examples of how to use them.