The following function tables describe {HEAD ~ the operation} of {TAIL ~ a grey level generator} 2 for producing the 1/2 duty cycle grey level 
of
The following function tables describe { HEAD ~ the operation } of { TAIL ~ a grey level generator } 2 for producing the 1/2 duty cycle grey level
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH