9N#S ...[??? TOPFCB SECT FILE FGN 20 DOC
 9NJL    #MAC  TOPFCB
 9P4=    [THIS MACRO SEARCHES FOR THE FCB OF THE TOP FILE OPEN TO THE CURRENT
 9PHW    [ACTIVITY AND GIVES A POINTER TO IT IN THE MODIFIER %A  
 9Q3G    [THIS MACRO DOES NOT CHECK IF THE POINTER GIVEN IS TO AN FCB
 9QH6          SMO      FX2  
 9R2Q          LDX   %A FILERING            [PICK UP -> TO RING ELEMENT  
 9RGB          ADX   %A FBACKPOINT(%A)      [-> FSTACK BL.   
 9S22          LDX   %A BPTR(%A)            [PICK UP -> TO FCB   
 9SFL    #NOR