{TAIL ~ The present invention} is generally directed to the field of document handling and {HEAD ~ processing technology} and, in particular, to improvements relating to the accumulation of material units 
{ TAIL ~ The present invention } is generally directed to the field of document handling and { HEAD ~ processing technology } and , in particular , to improvements relating to the accumulation of material units
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH