Timing Diagram (Time constraints)

How to use time constraint at the level of edit lifeline?
Is there an example describing how to use time constraint at the level of edit lifeline to see how to exploit it in any cases . Wait for your help.
editlifeline

Hi Rahma,

It just shows the expression you typed next to the time value specified at the given time. The curly brackets will be automatically inserted for you, e.g. if you type “A” it would become “{A}” automatically.

image

Best Regards,

Antony.