In a sequence diagram, the arrow type of the self-message on the right is changeable; the arrow on the left is not.
For example:
@startumldata -> data : PINdata ->> data : PINdata <- data : PINdata <<- data : PIN@enduml
@startuml
data -> data : PIN
data ->> data : PIN
data <- data : PIN
data <<- data : PIN
@enduml
(--------)
Hi A., and all,
Thank for the report,
FYI, it is now fixed with the last PlantUML version:
Thanks to the PlantUML team and contributors and JimN,
Regards,Th.
See also: