Int 15 Fn 14  - Vmix - "sys_clrwindow" - Clear Window                      [T]

   AH = 14h
   STACK:  WORD    top left corner of window (high byte = row, low = col)
       WORD    bottom right corner of window (high = row, low = col)

Return: AX = status (SYS_OK)

Note:  clears window to color set with "sys_setcolors" (AH=18h)

See Also: AH=15h"VMiX",AH=16h"VMiX",AH=18h"VMiX",AH=1Fh"VMiX"