A first separating unit is provided for {HEAD ~ a stack} of {TAIL ~ newspapers}, referred to as jackets 
A first separating unit is provided for { HEAD ~ a stack } of { TAIL ~ newspapers } , referred to as jackets
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH