
 SPEED  is  an  idle loop task that is useful in measuring how busy the CPU
 is  over  a  period of time.  SPEED runs at the lowest system priority, so
 that  it  only  gains  access  to the CPU when it would otherwise be idle.
 Once  per  second, SPEED prints out in histogram format what percentage of
 the  time  it had access to the CPU for that second.  Note that in periods
 of extreme CPU usage, SPEED might not even gain access to the CPU in order
 to print its results.
 
 To use SPEED, type:       RUN $SPEED
 
 SPEED can be terminated anytime by typing any character on the keyboard. 
