Wilder became famous for his Parabolic indicator that is used throughout the trading industry today. However, a key element of the technique was the combination of the parabolic with the highest high or lowest low of the last N bars to keep you in the trade. This feature was left out of the TradeStation implementation. Now you can have the Parabolic the way Wells Wilder traded it. Notice in the chart below how the Parabolic is pushed away from the price keeping you in the trade to capture the entire trend. Without it, the parabolic would have flipped in late September and a nasty whipsaw would have been encountered.