I invented some FSM with SCXML. As a reserverd word "reset", I think we need the "undo" command. "Undo" steps back to from-state. Let me give one example.
<scxml initialstate="root"> <state id="root"> <initial> <transition target="S0"/> </initial> <state id="S0"><transition target="S00" event="0"/></state> <state id="S00"><transition target="S100000" event="~"/><transition target="S000" event="0"/></state> <state id="S000"><transition target="S100000" event="~"/><transition target="S100000" event="0"/></state> </state> <state id="S100000" final="true"/> </scxml> In state S00, it moves back S0 when we typed "undo". Now how can we make this "undo"? Is SCXML engine equipped to stack data structure for supporting it?
