A category is a WikiName that exploits [[Wiki:WikiWiki|WikiWiki]]'s reverse linking: if you click on the title of a category page, you'll get a list of pages belonging to that category. To get a list of all categories, click the Category''''''Category title in the navigation area.
Here is a list of all pages containing the CategoryCategory wiki tag: <<FullSearch(category:CategoryCategory)>>
To be consistent with the C2 category scheme, all categories start with the word "Category". For more information, see Wiki:AboutCategoriesAndTopics''''''.