After opens a position, trader can set a take profit or stop loss on each of his/her positions. When market price hits the stop-profit price or the stop-loss price, system will immediately close the specified amount the of position at market price. For short positions, the take profit price needs to be lower than the position average open price, and the stop loss price needs to be higher than the average open price. For long positions, the take profit price needs to be higher than the average open price, and the stop loss price needs to be lower than the average open price.