Pseudo-states are be supported using the following syntax:
state choiceState <<choice>>
state en1 <<entrypoint>>
but there doesn't seem to be any support for shallow and deep history pseudo-states. Shallow history should be a "H" character in a circle and deep history by "H*" in a circle. It should be possible for a history pseudo-state to be the target of transitions (while nested inside a super-state) and it should be possible to set a transition from the history state to whatever the default state is. See the diagram below:
@startuml
state Comp {
state en1 <<entrypoint>>
[*] --> A
A --> B
B --> C
C --> [*]
en1 --> History
History --> A
}
[*] --> en1
@enduml
It seems the only way to target the sub-state is to use the entrypoint, if it is targeted directly it gets pulled out of the composite state (bug?).
