In sequence diagrams, an interaction operand is a container that groups interaction fragments. Interaction fragments refer to the event occurrences, execution occurrences, interaction occurrences, and combined fragments in sequence diagrams. You can add and modify interaction operands in a combined fragment.
Adding interaction operands
In sequence diagrams, an interaction operand is created automatically when you create a combined fragment. You can manually add an additional interaction operand to alternative, parallel, strict, or weak combined fragments.Moving interaction operands
In sequence diagrams, you can move the position of an interaction operand in a combined fragment to change the scenario in an interaction.Adding guard conditions in interaction operands
In sequence diagrams, a guard condition is created automatically and appears in edit mode when you create a combined fragment. You can also manually add a guard condition in an interaction operand that does not have an existing guard condition.
Parent topic: Creating combined fragments in sequence diagrams
Related concepts
Interaction operands