In sequence diagrams, you can add a lifeline to show
the participant in an interaction.
To add a lifeline:
- Open a sequence diagram.
- In the Palette, click Lifeline.
- In the interaction frame, complete one of the following
steps:
- To represent a specific participant type, click Create
New Class, Create New Actor,
or Enter Component Name. Type a name for
the lifeline and click OK.
- To represent an unspecified participant, click Unspecified.
The new lifeline appears vertically aligned with other
lifelines in the interaction frame.