py [ - parity, default : N - rtscts enable RTS / CTS flow control ( default off ) - xonxoff enable software flow control ( default off ) - rts RTS set initial RTS line state ( possible values : 0, 1 ) - dtr DTR set initial DTR line state ( possible values : 0, 1 ) network settings : - P LOCALPORT, - localport LOCALPORT local TCP port NOTE : no security measures are implemented.