sHelp
                                     HUB.PAT
       2
 xi.conv.combine.map
 xi.conv.one.to.one.map

 Ì       2
xi.conv.combine.map
[xi.hist.combine.mri.urn]
*(HB)CONV["COMB",ea]

 Field Name                 Len Dat Typ  J  DPM            Offset/Local/VAL
 xi.hist.combine.mri.urn     25 URN      L  MRI.PAT        ea                                                      
 xi.hist.combine.acct.num    12 FREE     L                 *(HB)CONV["COMB",ea]|0                                      
 xi.hist.combine.adm.urn     30 URN      L  ADM.PAT        *(HB)CONV["COMB",ea]|1                                  
 xi.hist.combine.old.num     12 FREE     L                 *(HB)CONV["COMB",ea]|2                                      
 Ì       2
xi.conv.one.to.one.map
[xi.hist.keep.old.num]
*(HB)CONV["KEEP",aaOLD]

 Field Name                 Len Dat Typ  J  DPM            Offset/Local/VAL
 xi.hist.keep.old.num        12 FREE     L                 aaOLD                                                       
 xi.hist.keep.mri.urn        25 URN      L  MRI.PAT        *(HB)CONV["KEEP",aaOLD]|0