Before you can perform any of these tasks, you must create a DTD and open it in the DTD editor. After you open the DTD, you can use the Outline view to create nodes and the Properties view to provide details about the nodes.
Note: In the Outline view, you can either
work in default mode (all nodes appear in the order you added them to the
DTD in) or group the DTD nodes into the following logical groups: notations,
entities, elements, and other, by clicking the Group items logically button .