You can create a topic diagram
to dynamically explore existing relationships between elements in
an application. You can customize, refresh, and save a topic diagram.
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For example, you can create topic diagrams to visually represent
entire inheritance hierarchies or associations of Java classes
by using the predefined queries
Inherited Java Classes
(N levels) or
Java Field Types.
You
can customize a query for an existing topic diagram to change its
context or level of detail.