There are a number of ways to view a data model. By default, database-derived source topics and any metatopics you have created are displayed together in the Content frame in Combined view.
To change the data model view, select DataModel, then Data Model View, and then Option.
Combined—Displays both original (database-derived) and metatopics in the Content frame.
Original—Displays only database-derived topics in the Content frame.
Meta—Displays only metatopics in the Content frame.