I have checked in the Language Reference Guide and I could not find any option to play with text alignment in the Activity box.
Let's say I have this simple diagram like below:
@startuml
:Hello world;
:This is defined on
several **lines**;
@enduml
By default it is aligned to the left.
It would be great to be able set the label alignment as 'centered'/'left' /'right'.
If you know any way to do it with the current version of plantUML please let me know.
Thanks