The sheet 24 is placed in {HEAD ~ a sheet handling system} 26 which hold {TAIL ~ the sheet} under tension 
hold
The sheet 24 is placed in { HEAD ~ a sheet handling system } 26 which hold { TAIL ~ the sheet } under tension
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH