In state diagrams, the choice pseudo-state is supported, but the junction pseudo-state is not supported.
By non-support of the junction pseudo-state, I could not design state machine that is slightly complicated without increasing states or transition.
I want to append the 'junction' stereotype.
I know that the 'start' stereotype is simlular to the junction pseudo-state.
By using the 'start' stereotype, the PlantUML generates the start pseudo-state symbol that is same appearance to the junction pseudo-state symbol.
I think that it is easy to support the 'junction' stereotype.
Please try to be constructive when considering this matter.