ProjectionBands

Sometimes abbreviated as PJB.
Is a statistical indicator.
Was developed by Mel Widner.
Is computed using the high and low prices.
Returns two time series, the n-period highs and lows projected forward using linear trendlines for the highs and lows.
FinancialIndicator["ProjectionOscillator", n] uses n-period highs and lows.
The first value occurs after n periods.