Creating message pathways in communication diagrams

To show the messages that pass between the lifelines in a communication diagram, you must begin by creating a message pathway.
You must have a communication diagram open that contains at least two lifelines.
To create a message pathway:
  1. In the Palette, click Message Pathway.
  2. In the diagram editor, click one lifeline and drag the cursor to the second lifeline.
The two lifelines are connected by a solid line to which you can now add messages.
Related concepts
Messages in UML diagrams
Message pathways in communication diagrams
Related tasks
Specifying relationships in UML diagrams
Creating messages in communication diagrams

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