Parabolic SAR

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ParabolicSAR(Min AF, Max AF)
PSAR(Min AF, Max AF)

Overview
Author Welles Wilder developed the Parabolic Stop and Reversal or simply Parabolic SAR. This indicator is always in the market (whenever a position is closed, an opposing position is taken). The Parabolic SAR indicator is most often used to set trailing price stops.

Interpretation
A stop and reversal (SAR) occurs when the price penetrates a Parabolic SAR
level. Recommended Parameters
Min AF (Accumulation Factor): 0.02
Max AF (Accumulation Factor): 0.2

Example
set BUY = CROSSOVER(CLOSE, PSAR(0.02, 0.2))
Evaluates to buy when the close recently crossed over the Parabolic SAR.

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