ATR-ranged Donch on 15min

// This is a simple Mean Reversion & Breakout Indicator.
// A Donchian Channel is plotted. A threshold equal to 0.25 of Daily ATR.
// If price reverses from this threshold, then it can be taken as possible Mean Reversion.
// If price crosses the previous Donchian levels, it can be taken as a possible breakout.
// Typical of such strategy is the whipsaw effect when price movement is just flat.
// I have marked the region where the lower and higher thresholds are closer to be an indicative of whipsaw.
// But it is not really effective to avoid whipsaw.