Int 31 Fn 0D03  P - Dpmi 1.0+ - Free Serialization On Shared Memory        [E]

   AX = 0D03h
   SI:DI = shared memory block handle
   DX = flags
       bit 0: release shared serialization rather than exclusive serialztn
       bit 1: free pending serialization
       bits 2-15 reserved (0)

Return: CF clear if successful
   CF set on error
       AX = error code (8002h,8023h) (see #2814 at AX=0000h)

See Also: AX=0D00h,AX=0D02h