INT 16 - PC Tools v5.5+ DESKTOP API - GET/SET WINDOW PARAMETERS
        AX = FFB5h
        BX = window specifier (000Fh to 0019h) (see below)
        DX = 0000h get, nonzero = set
        ES:DI -> window parameter buffer (see below)

Values for window specifier:
 000Fh  comm/FAX
 0014h  hotkey selection
 0015h  ASCII table
 0016h  system colors menu

Format of window parameters:
Offset  Size    Description
 00h    BYTE    rows in window, not counting frame
 01h    BYTE    columns in window, not counting frame
 02h    BYTE    row number of top of window
 03h    BYTE    2*column number of left of window
 04h    BYTE    character attribute for ???
 05h    BYTE    character attribute for background/border
 06h    BYTE    character attribute for ???
 07h    DWORD   pointer to ??? on screen
 0Bh  4 BYTEs   ???
 0Fh    BYTE    nonzero if window may be resized
Note:   if running in monochrome mode, character attributes at offsets 04h to
          06h are stored unchanged, but attributes other than 07h, 0Fh, or 70h
          are changed to 07h on reading