INT 15 - TopView - SEND MESSAGE - "DIR" - GET PANEL FILE DIRECTORY
AH = 12h
BX = 0300h
STACK: DWORD handle of panel object
Return: STACK: DWORD length of directory (always multiple of 14 bytes)
DWORD address of directory
Note:   a null string is returned if the object is not open
SeeAlso: AH=12h/BH=83h

Format of panel file:
Offset  Size    Description
00h  2 BYTEs   C0h C3h
02h    BYTE    number of panels in file
03h    for each panel in file:
8 BYTEs  blank-padded panel name
DWORD  panel offset in file
WORD   panel length
data for panels (each consists of one or more window/query/manager
streams)
first byte of each panel must be 1Bh, fifth byte must be E5h

See also: 1512

1512 - TopView - SEND MESSAGE - "DIR" - GET PANEL FILE DIRECTORY