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