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                                     MM.PACK
     i   2
   mm.pack.copy
     mm.pack.copy.list
   mm.pack.main

 Ì     i   2
mm.pack.copy    (copy) 
&MDC

 Field Name                 Len Dat Typ  J  DPM            Offset/Local/VAL                                        
 copy.created                10 FREE     L                 &MDC|0                                                      
 copy.last.edit              10 FREE     L                 &MDC|1                                                      

 Ì     i   2
mm.pack.copy.list    (copy.list) 
[copy.unit]
&MDC[md]

 Field Name                 Len Dat Typ  J  DPM            Offset/Local/VAL                                        
 copy.unit                    4 FREE     L                 md                                                          

 Ì     i   2
mm.pack.main    (main) 
[unit]
&MD[md]

 Field Name                 Len Dat Typ  J  DPM            Offset/Local/VAL                                        
 unit                         4 FREE     L                 md                                                          
 active                       1 YN       L                 &MD[md]|0                                                   
 last.update                 10 FREE     L                 &MD[md]UPD                                                  
 name                        30 FREE     L                 &MD[md]|1                                                   
 smallest.unit                1 YN       L                 &MD[md]|2                                                   

 Ì       2
 INDEX FILE/INTERNAL NAME           SUBSCRIPTS/PHYSICAL BASE

 mm.pack.smallest.unit.x            [unit]
   smallest.unit.x                    ?MDS[md]