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