Int 2F Fn 1682 - MS Windows 3+ - End Critical Section [W] AX = 1682h Notes: not supported in Windows/386 2.x. Get InDOS flag with INT 21/AH=34h and decrement by hand, taking care not to decrement InDOS flag through zero See Also: AX=1681h,INT 15/AX=101Ch,INT 21/AH=34h