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Envelope (Lower) Indicator

Envelope bands are a simple way to find a "normal" trading range.  The upper and lower bands are typically used in conjunction with one another visualize if the current price is trading at the high or low end of its range.  A buy signal may be triggered when the price penetrates the lower envelope and a sell or sell short signal may be generated when the upper envelope has been penetrated.  Envelopes are calculated by plotting a shifted moving average.  The average is shifted up at specified percent for the upper band and shifted down at the specified percent for the lower band.

See Also

Envelope (Lower) Developer Help

Envelope (Upper)