A “stop and reverse” trend indicator plotted as dots above/below price. Dots flip positions when the trend changes: dots below price indicate a bullish trend, above price indicate bearish. Traders use it to trail stops or signal entry/exit. In Forex robots, Parabolic SAR often functions as a dynamic trailing stop or as a reversal signal (e.g. close position when dot flips). MQL uses iSAR(), and cAlgo has Indicators.ParabolicSAR().

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