INT 2fH 1682H: End Critical Section

                                                      Compatibility: Win 3.x 
 Expects: AX    1682H
          ──────────────────────────────────────────────────────────────────
 Returns: none
          ──────────────────────────────────────────────────────────────────
    Info: This releases control, allowing Windows (or other VM handler) to
          resume time-slice sharing among currently-active tasks.

          After signalling entry into a critical section (INT 2fH 1681H),
          you should use this service as soon as possible.

See Also: INT 2fH 16xxH: Enh386 Windows Services & Notifications
          INT 2fH: Multiplex Interrupt
          DOS Functions
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