Template:Hidden category/doc
From Anthrodia Atlas
Description
This template is to be used on category pages that are supposed to be hidden. It contains the magic word "__HIDDENCAT__".
Usage
Simply add {{Hidden category}} to the category page. It should not be added to pages outside of the category namespace, since it won't work anyways. "__HIDDENCAT__" does not have to be added to the category page if this template is present, since this template adds that magic word for you.