Lifeline

You can create a lifeline by double-clicking on a diagram or choosing how you present it from the tool palette.
UML Sequence Diagram Lifeline


Show Actor as Lifeline

By dragging an Actor from the tree to diagram, you can represent lifeline in Actor on the Sequence Diagram.
Actor as Lifeline

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Message

Found message

To create a found message, select [Synchronous Message] or [Asynchronous Message] from the tool palette and click target Lifeline.
Found Message

Lost Message

To create a Lost message, select [Synchronous Message] or [Asynchronous Message] from the Tool palette and click Lifeline and then anywhere other than Lifeline.
Lost message

Gate

To create a gate, select [Synchronous Message] or [Asynchronous Message] from the Tool palette and click on a diagram frame then Lifeline.
Gate

Reply Message

There are two ways to create a reply message.
Reply Message in Sequence Diagrams


1. Select [Reply Message] from a tool palette and click a lifeline.
Reply Message

2. Or, turn [Reply Message Mode] on a tool palette and create Messages.
Reply Message

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CombinedFragment

Combined Fragment

Operand

Operand in Sequence diagram

You can create Operand from the CombinedFragment’s Property view or diagram’s pop-up menu.
Combined Fragment


TIPS: Define loop in the CombinedFragment

You can enter texts and numbers from the CombinedFragment’s Property View.
loop
loop