{HEAD ~ The microprocessor} 18 handles {TAIL ~ the interface} to the controller 20, the channel interface 16 and the RAM 12, as well as determining when to read/write the video in the RAM to/from the disk drive 14 
handles
{ HEAD ~ The microprocessor } 18 handles { TAIL ~ the interface } to the controller 20 , the channel interface 16 and the RAM 12 , as well as determining when to read / write the video in the RAM to / from the disk drive 14
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH