These fields allow you to choose one primary category and any number of secondary categories. The MTEntryCategory tag displays the primary category for an entry. Secondary categories can be displayed using the MTEntryCategories tag, as in <$MTEntryCategories glue=", "$>.

Movable Type supports the use of subcategories, with a more complex set of template tags necessary for display. For more information on this and other topics related to categories, see the Categories chapter of the manual.