Int 62 Fn 00CF  u - Fgdriver V4.02 - "fg_vbcopy" - Copy Rect Between Virt  [V]

   AX = 00CFh
   ES:BX -> variable record (see #3181)
   CX = handle for source virtual buffer
   DX = handle for destination virtual buffer

Notes: the FGDRIVER functions are rearranged with each major release, but
     their parameters do not change (see #3145)
   if the destination buffer is the same as the source buffer, the regions
     must not overlap

See Also: AX=00D0h,AX=00D1h,AX=00D4h,AX=00D6h,AX=00D7h

Format of FGDRIVER VBCOPY variable record:
Offset Size    Description (Table 3181)
 00h   WORD    source region's left edge
 02h   WORD    source region's right edge
 04h   WORD    source region's top edge
 06h   WORD    source region's bottom edge
 08h   WORD    X coordinate of destination's upper left corner
 0Ah   WORD    Y coordinate of destination's upper left corner