-Trexper indicator uses the calculation of the same infamous indicator named "Donchian channel" -an indicator used in market trading developed by Richard Donchian. It is formed by taking the highest high and the lowest low of the last n periods. The area between the high and the low is the channel for the period chosen in conjunction with another powerful indicator named "Moving Average Ribbon", which is a series of moving averages of different lengths plotted at the same time on a chart.