This indicator is used for backtesting Moving Average crossover strategies (only for long trades).
A "short" and "long" moving average period and calculation method (the "smoothing type") are user-adjustable. The trade is triggered when the "short" moving average crosses over the "long" moving average.
A third customizable moving average is provided which is used as a trigger to exit the trade when the *close* of a candle crosses below this "exit" moving average. Again the period and smoothing type are user-adjustable.
In true TradingView spirit, the author of this script has published it open-source, so traders can understand and verify it. Cheers to the author! You may use it for free, but reuse of this code in a publication is governed by House Rules. You can favorite it to use it on a chart.