If the ticket is a duplicate, {HEAD ~ a duplicate ticket error} is displayed at {TAIL ~ block} 224 and the program returns to block 214 
is displayed at
If the ticket is a duplicate , { HEAD ~ a duplicate ticket error } is displayed at { TAIL ~ block } 224 and the program returns to block 214
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH