Adding and removing covered lifelines in interaction fragments

In sequence diagrams, you can add and remove lifelines that are covered by an interaction fragment, which includes combined fragments and interaction occurrences. When you remove a covered lifeline in a combined fragment, all messages and interaction fragments that were contained in the combined fragment and were covered by the lifeline are also deleted.

To add or remove a covered lifeline in an interaction fragment:
  1. Open a sequence diagram that contains at least one interaction fragment with multiple lifelines.
  2. In the interaction frame, right-click an interaction fragment; then click Covered Lifelines and complete one of the following steps:
    • To add a covered lifeline, click Add Covered Lifelines.
    • To remove a covered lifeline, click Remove Covered Lifelines.
  3. In the window that opens, click a lifeline and click OK.

Parent topic: Creating combined fragments in sequence diagrams

Parent topic: Referencing interactions from within other interactions

Related concepts
Interaction occurrences
Combined fragments

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