The horizontal lines represent the high and low of the first hour of trading or the initial balance. The two green lines represent 150% of the initial balance range and the two red lines represent 200% of the initial balance range.
Also on the bar chart the bars that represent when the high or low penetrate either the 150% or the 200% range lines are colored in the same color as the lines for easy identification. The name of the custom study is IB_Band.
Additionally, the range of the initial balance is displayed in the price scale. Here it was 7 points.