{HEAD ~ Data} stored by the exchange system for printing an exchange system coupon can be modified remotely at {TAIL ~ substantially any time} 
modified remotely at
{ HEAD ~ Data } stored by the exchange system for printing an exchange system coupon can be modified remotely at { TAIL ~ substantially any time }
HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL