| This is an administration category. It is used by the Administrators of the Admin Tools Wiki project. It contains pages that are not articles, or it groups articles by status rather than content. Do not include this category in content categories.
This is a container category. Due to its scope, it should contain only sub-categories.
This is a hidden category. It is not shown on its member pages, unless the corresponding user preference is set.
This is a tracking category. It builds and maintains a list of pages primarily for the sake of the list itself. Pages are usually added to tracking categories through templates.The subcategories of this category are hidden categories. To add a category to this category, tag it with the magic word
This category contains hidden categories. Unlike normal categories, these are not displayed at the bottom of pages that are included in them, and are therefore hidden from readers.
To hide a category, add the magic word
__HIDDENCAT__ to the category’s description page.
Categories should be hidden if they are concerned with the maintenance or administration of the Admin Tools Wiki project itself, rather than being part of the content of the wiki. For example, Category:BlogListingPage should be hidden.
Previewing a page whilst editing it will list the hidden categories used at the bottom of the page. If you have created a user account, you can make hidden categories show up next to normal categories at the bottom of all pages by setting a user preference.