def wait_on(event)
      $shreduler.shredule(Shred.current, event, $shreduler.event_clock)
      Shred.current.pause
    end
def wait_on(event)
      $shreduler.shredule(Shred.current, event, $shreduler.event_clock)
      Shred.current.pause
    end
def wait_on ( event ) $shreduler . shredule ( Shred . current , event , $shreduler . event_clock ) Shred . current . pause end
sleeps, waiting on the given event on the default EventClock of
 the global Shreduler
sleeps waiting on the given event on the default EventClock of the global Shreduler