You can generate incremental sequence diagrams from a previously-generated sequence diagram. In some cases, you can have generated a sequence diagram with a low nesting value such as 3 or 5. The nesting value limits how deep the parser traverses the source code calling sequence.

1. Once you review the sequence diagram, you can decide that you want to see additional objects and messages that are currently not shown on the diagram because of the nesting value constraint.
2. In this case, you can select the Generate Sequence Diagram command from the context menu of an activation block and the nested messages and objects calling from that method display on the diagram.