Deep history of orthogonal regions</h4>

  <p>Deep history of states with orthogonal regions is currently not
  supported:</p>

  <p><img alt="DeepHistoryLimitation1" src="DeepHistoryLimitation1.gif"
  border="0" width="331" height="346"></p>

  <p>Attempts to implement this statechart will lead to a compile-time error
  because B has orthogonal regions and its direct or indirect outer state
  contains a deep history pseudo state. In other words, a state containing a
  deep history pseudo state must not hav