In Unified Modeling Language (UML) sequence diagrams,
an interaction operand is a container that groups interactions. You
can add new interaction operands to combined fragments or add additional
interaction operands to combined fragment types that allow multiple
operands, such as alternative, parallel, strict, or weak combined
fragments .
You must have a sequence diagram with lifelines
and combined fragments open in the diagram editor.
To add an interaction operand to a combined fragment, in
the diagram editor, right-click a combined fragment; then complete
one of the following steps:
- To add a new interaction
operand, click .
- To add an additional interaction operand, click Interaction
Operand and click Add before or Add
after.