INT 15 - TopView - SEND MESSAGE - "DIR" - GET PANEL FILE DIRECTORY      
  
    | 
       Input  | 
    
       Output  | 
   
  
    | 
       AX 
     | 
    12h | 
      | 
      | 
      | 
    AX | 
   
  
    | 
       BX 
     | 
     03h | 
    00h | 
      | 
      | 
    BX | 
   
  
    | 
       CX 
     | 
      | 
      | 
      | 
      | 
    CX | 
   
  
    | 
       DX 
     | 
      | 
      | 
      | 
      | 
    DX | 
   
  
    | Stack | 
    DWORD
      Handle of Panel Object | 
      | 
    ES:DI | 
   
 Return: STACK: DWORD length of directory
               DWORD address of directory
Format of panel file:
        BYTE C0h C3h
        BYTE number of panels in file
        For each panel in file:
            8 BYTES blank-padded panel name
            DWORD   panel offset in file
            WORD    panel length
        data for panels (each panel consists of one or more
        window/query/manager streams) first byte of each
        panel must be 1Bh, fifth byte must be E5h |