i am new to trading and i have some questions about the nx function.. correct me if i am wrong.. its buying or selling at the bid ask .. if its over 100 shares with instant fill... is there shorting with the nx? is there price improvement?... if the market moves while you enter outta market qoutes where are you filled, and at what price?... the 30 sec is for buy buy or sell sell but not buy/ sell there no time restraints, correct? who is using this function and whats your feed back i am debating it because i get alota price improvement with the style and stock i trade... when would you not want to use this... please gimme as much feedback as possible from the people that use it good /bad or thoughts thanks in advance .