The query and the context that you specify persists in the topic diagram. Each time that you open a topic diagram, the system queries the underlying elements and automatically populates the diagram with the moat recent results. However, if you make changes to the underlying elements when a topic diagram is open, the diagram might not represent the current status of the elements until you refresh the diagram manually.
You can select either a default or radial layout format for the topic diagram. The default layout shows all diagram elements in a hierarchy that can span several levels. The radial layout positions the selected diagram element that you used in your query as the hub, or context diagram element. Each diagram element is connected either directly or indirectly to the context element. The radial layout provides a view of all directly related diagram elements and spans one or two levels.
A topic diagram is similar to a browse diagram except that you can save
a topic diagram and reopen it at any time. Unless you save a topic diagram
as an editable diagram, you cannot add or modify the diagram elements.