Int 33 Fn 0010  - Genius Mouse - Define Screen Region For Updating         [M]

   AX = 0010h
   ES:DX -> update region list (see below)

Notes: mouse cursor is hidden in the specified region, and needs to be
     explicitly turned on again
   this version of the call is described in an August 1988 version of the
     Genius Mouse programmer's reference; it has been changed to conform
     to the Microsoft version shown above by version 9.06 (and possibly
     earlier versions)

See Also: AX=0001h,AX=0002h,AX=0007h,AX=0010h"MS MOUSE"

Format of update region list:
Offset Size    Description
 00h   WORD    left-most column
 02h   WORD    top-most row
 04h   WORD    right-most column
 06h   WORD    bottom-most row