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