Outputs the root navigation category com.arsdigita.navigation.ui.category.Root Outputs the first level navigation categories (ie immediate children of the root). com.arsdigita.navigation.ui.category.TopLevel Outputs siblings of the category category (ie, those categories at the same level as the current category. com.arsdigita.navigation.ui.category.Siblings Outputs immediate children of the current category com.arsdigita.navigation.ui.category.Children Outputs the categories on a path between the root navigation category (exclusive) and the current category (inclusive). com.arsdigita.navigation.ui.category.Path Outputs the immediate children of all categories between the root navigation category & the current category (both inclusive). This is intended for showing a contextually-expanded tree to the current category. com.arsdigita.navigation.ui.category.Menu Outputs all categories, starting from the root navigation category and recursing. com.arsdigita.navigation.ui.category.Hierarchy Represents the information for a single category. When generating links to the category page, the url attribute is the preferred method. The id attribute is merely present for informational purposes.