{HEAD ~ The processing system} 1 is adapted to receive {TAIL ~ data files} having any one of a number of predetermined formats 
is adapted to receive
{ HEAD ~ The processing system } 1 is adapted to receive { TAIL ~ data files } having any one of a number of predetermined formats
HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH