cted then
    all currently active states are inevitably also destructed. That is,
    state machine termination is tied to the destruction of the state machine
    object</li>
  </ul>

  <p>In my experience, neither of the above points is usually problem in
  practice since ...</p>

  <ul>
    <li>exit actions cannot often fail. If they can, such a failure is
    usually either

      <ul>
        <li>not of interest to the outside world, i.e. the failure can simply
        be ignored</li>

        <li>so 