This Pine Script indicator, titled 'Max Rise / Max Drawdown,' calculates and plots the maximum rise and maximum drawdown based on a specified length. It computes the percentage increase from a past low and decrease from a past high over the defined period, visually presenting this data on the chart. The indicator displays two lines: one for the maximum rise (colored lime) and another for the maximum drawdown (colored red), while also indicating thresholds at +0.01 and -0.01 with green and maroon horizontal lines respectively.