{HEAD ~ The produced bilevel image data} is transferred to the serial printer 16 via {TAIL ~ the serial printer interface} 26 
is transferred via
{ HEAD ~ The produced bilevel image data } is transferred to the serial printer 16 via { TAIL ~ the serial printer interface } 26
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH