D6BJ ...[??? DERING SECT CENT FGN 32 DOC
 D6LB    #   
 D762    #     DERINGS A SPECIFIED ELEMENT RENDERING IT NULL 
 D7KL    #   
 D85=    #MAC  DERING
 D8JW    #STR  %A,1  
 D94G          LDX   1  %A   
 D9J6          CALL  0  (GDERING)
 D=3Q    #NOR