The loyalty program instrument may be used to store {HEAD ~ an index} to {TAIL ~ a record} in a database or a portable data file 
The loyalty program instrument may be used to store { HEAD ~ an index } to { TAIL ~ a record } in a database or a portable data file
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH