If you are holding a short position, there is no option on the TWS to "cover". Rather, you will simply place a buy order to buy back the number of shares or contracts you are short. For example, if you are short 100 shares, you can close your position by placing a buy order for 100 shares. You can also right click on your position at any time and use the "Close" button at the top of the right click window to initiate a closing order…