{TAIL ~ An adjustable weight} is provided to control the force exerted upon a signature stack during {HEAD ~ operation} 
{ TAIL ~ An adjustable weight } is provided to control the force exerted upon a signature stack during { HEAD ~ operation }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD