1. Clicking on the "REV" button will close the current open position and open a reverse position.

2. Clicking on the "CLOSE" button with your left mouse button will close the current position and cancel any working orders associated to the instrument/account combination. Clicking on this button with your middle mouse button (scroll wheel) will close the selected active strategy only. This means that the position size of  the strategy will be closed and any working orders associated to that strategy will be cancelled.