Plugin designed to make category insertion a little bit smarter. When using the default <txp:category# /> tag with separators (such as a comma between the tags), you’ll quickly run into problems when an article doesn’t have a category defined (since the comma will still be there).

an7_category allows you to insert the separators as part of the tag; if you assign categories to an article, the categories and separators are inserted, if not, nothing messes up your design.