https://www.guerillastocktrading.com/lessons/the-secret-to-the-donchian-system-for-fast-profits/ (CLICK HERE FOR THE FULL LESSON) The Donchian channel is a beneficial indicator for looking at the volatility of a market price. When a price is stable the Donchian channel will be comparatively slim. In case the price changes considerably the Donchian channel will be wider. Its main use, having said that, is designed for providing signals for buy and sell trades. If a security trades above its highest n day high, then a long is established. When it trades below its lowest n day low, then a short position is entered into. There're handy for projecting support and resistance levels of price and define boundaries for price action.