Slanted lines in sequence diagram?

Question

Is it possible to get slanted horizontal lines in sequence diagram?
 

See here http://www.mcternan.me.uk/mscgen/img/example1.png

 

I'd like to outline, that the operation is taking some time (e.g. sending a message over the internet).

Answer 1

It seems it's currently not possible, you may use the delay instead.

Ex:

@startuml

Alice -> Bob: Authentication Request
...
Bob --> Alice: Authentication Response
...5 minutes latter...
Bob --> Alice: Bye !

@enduml