Int 2F Fn 3901  - Kingswood Tsr Windows - Open Window                      [r]

   AX = 3901h
   BL = 02h

Return: AX = error code (0000h if successful)
   SI,DI,DS,ES preserved

Notes: opens the next TSR window on top of any others.  Only three
     TSR windows can be opened at any one time.  The three windows
     are all 40x11 characters, partly overlapping.

See Also: AH=39h/BL=00h,AX=3901h/BL=03h,AX=3901h/BL=05h,AX=3901h/BL=06h