While libraries provide abstract locations for objects of any type, Kupu distinguishes objects by resource type. For example, a user might request a library showing objects to link to or a library showing objects to be inserted into a document. The abstract location (library) might be the same, but the former library would contain documents, the latter images.

This management screen allows you to define resource types using a list of portal types. A special resource type, collection, identifies portal types that are to be treated as collections.