Is it possible to top align notes in a sequence diagram?

Question

When I use note over command on two lifelines the notes are not aligned with each other. The second notes is below the first note. Is there some command to align the notes over a lifeline? 

Below is a code snippet that renders 2 notes at different vertical positions. I would like that the notes are placed on the same vertical position. 

@startuml

 

title Align notes

actor Actor as oper

participant Participant_A as scp

participant Participant_A as ssc

hnote over scp: State_X

hnote over ssc: State_Y

 

@enduml

Comments

I am looking for exactly the same possibility. Want to be notified if this feature is added.

Answer 1

We are using PlantUML to document interacting state machines and it would be very nice if the notes could be aligned, especially in diagrams that have a lot of actors.

Answer 2

Hello A.,

Just to answer to an old unanswered question (and point out similar question/answers).

Here are some answers:

• https://forum.plantuml.net/354/sequence-diagram-possibly-multiple-hnotes-vertical-level

With that, we observe the expected result:

hnote over scp: State_X
/hnote over ssc: State_Y

Regards,
Th.