In Unified Modeling Language (UML) sequence diagrams,
you can horizontally resize any interaction fragment, and you can
vertically resize a combined fragment.
You must have a sequence diagram that contains
at least one combined fragment with multiple lifelines open in the diagram
editor.
To resize an interaction fragment:
- In the interaction frame, click an interaction
fragment.
- Complete one of the following steps:
- To resize an interaction fragment horizontally
across lifelines, click an interaction fragment and drag the handles
left or right across additional lifelines. In the Add
Covered Lifelines window, click a lifeline and click OK.
The interaction fragment resizes to the new position and covers
the selected lifelines.
- To resize a combined fragment vertically, drag the handles
up or down across any messages and other interaction fragments on
the same lifeline. The combined fragment resizes to the new position
and the covered messages and interaction fragments are reparented
to this resized combined fragment.