In sequence diagrams, you can reorder lifelines or move
a message across other messages and interaction fragments on the same
lifeline or on another lifeline to reorder the sequence in which the
messages occur. After you reorder a message, the message number automatically
indicates the updated position on the lifeline.
Before you begin
Restriction: - You cannot directly reorder a skewed asynchronous message. For
the message renumbering to occur, you must move the other messages
around it to change the skewed order.
- You cannot change the order between a send message and a return
message.
You must have a sequence diagram open that contains at
least two lifelines with messages.
About this task
To move a message or lifeline:
Procedure
- Right-click a message or lifeline; then click Select
Message Set/Reorder.
- Drag the message or lifeline to move it to the new location. The grid guideline indicates where the message will be located
in the diagram.
What to do next
Tip: You can reorder lifelines and messages
by holding the Alt key and dragging the element
to the new location.
Note: To connect a message to a different
lifeline, click a message handle and drag it to another lifeline.