{HEAD ~ The unique ID number} may be printed in plain text in the address block and cryptographically encoded within {TAIL ~ the DPM} 
cryptographically encoded within
{ HEAD ~ The unique ID number } may be printed in plain text in the address block and cryptographically encoded within { TAIL ~ the DPM }
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL