How does gradual margin close out work?

Once your account drops below 50% of the required margin, your trades will be closed out in the following order:

1. first, the good-till-cancel (GTC) orders are closed;
2. if the margin level remains below 50%, all losing open positions on the open markets are closed;
3. if the margin level is still below 50%, the remaining positions on the open markets are closed;
4. if the margin level stays below 50%, all remaining positions are closed as soon as the markets are open.