From Fedora Project Wiki
A tag is a WikiName that exploits [wiki:Wiki:WikiWiki WikiWiki] 's reverse linking. If you click on the title of a tag page, you'll get a list of pages containing that tag. For more information about tags, see the HelpOnTags page.
Here is a list of all pages containing the TagTag wiki tag: [[FullSearch()]
Tags work in the same manner as categories. To be consistent with the C2 category scheme, all tags start with the word "Tag". For more information, see Wiki:AboutCategoriesAndTopics'.