If the signal is a buy signal and it is above the blue line , then place a buy order , if it is below the blue line , and gives a sell signal , then sell . If it gives a buy signal and it is below the blue line wait for it to cross up thru the blue line and then place a buy , the opposite for a sell . If it is above the blue line , wait for it to to go down thru the blue Line and then place a sell order