In Unified Modeling Language (UML) sequence diagrams,
you can add and remove covered lifelines to combined fragments to
visually represent constructs in interaction instances.
You must have a sequence diagram with lifelines
and combined fragments open in the diagram editor.
To add or remove covered lifelines to or from a combined
fragment:
- In the diagram editor, right-click a combined
fragment; then click Covered Lifelines and
complete one of the following steps:
- To add lifelines, click Add Covered
Lifeline(s).
- To remove lifelines, click Remove Covered Lifeline(s).
- In the window that opens, click the lifelines and click OK.
Note: When you remove a covered lifeline
in a combined fragment, all the messagesĀ and interaction
fragments that are contained in the combined fragment and are covered
by the lifeline are also deleted.