Bullish and Bearish Engulfing Bars

As discussed in the articles on Bullish and Bearish Engulfing Bars, this indicator highlights the bars, and allows you to implement those trading strategies.

The only input is an offset as to where to put the arrows indicating the bars in pips.

This is best placed on an hourly chart.  The indicator will loot at the previous 8 bars, and check to see if the first group of four hourly bars engulfs the previous four hourly bars.  This is then rolled over with every new hourly bar.