Int 2F Fn AF11  - Windos V2.11 - Free Xms Blocks                           [O]

   AX = AF11h

Return: nothing
Desc:  free all XMS blocks whose XMS identification value (see AX=AF12h)
     equals the current PSP

See Also: AX=AF00h"WinDOS",AX=AF12h"WinDOS",INT 21/AH=50h