Why not to support nested boxes in sequence diagrams?

Question

why this is not possible?

@startuml

     box "component"

           box "subcomponent"

                 participant a

           end box

     end box

@enduml

 

 

Comments

Dear PlantUML team!
any comment on this one?
Thank you!

Related request is here: http://plantuml.sourceforge.net/qa/?qa=4606/nested-boxes&show=4606#q4606

Answer 1

Since everyone seems to need this, we have started to work on it.
This is really a first release, you can only have 1 nested level now. And this will probably only work with teoz engine.

@startuml
!pragma teoz true
box "component"
  box "sub1"
    participant a
  endbox
  box "sub2"
    participant b
  endbox
end box
@enduml

There are probably a lot of issues, it's only a first step