The computerized apparatus of clam 1, wherein {HEAD ~ the input lines} are preceded with {TAIL ~ a prompt} 
The computerized apparatus of clam 1 , wherein { HEAD ~ the input lines } are preceded with { TAIL ~ a prompt }
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL