My understanding is that when the available funds are negative or the short position is short, the short position is short. As you said, when the margin of your position is not enough for exchange trading, the short position will be short. In fact, they will force you to close your position, that is, short position.

Drop 65,438+000 points or more until you owe money to the futures company. At this time, we call it through positions.

I hope it helps you.

I wish you a happy life and a happy investment