I'd like a sequence diagram to be more compact in some cases. This can be done by reducing the visible vertical space between events. Here is an example:
@startuml
a->b
activate b
b->c:test
deactivate b
@enduml
If you remove the word "test", the margin will get reduced:
@startuml
a->b
activate b
b->c
deactivate b
@enduml
Can the space be reduced/controlled if the "test" is present and it is just one line?