I want to be able to have the message text for messages to be aligned according to the location of the actor / participant. So if I have Actor A and Actor B, and A is on the left and B is on the right, I'd like to be able to do:
A -> B: Left-justified text
A <- B: Right-justified text
It seems like the only justification I'm seeing is left justification for the text for all messages. Is it possible to control this?