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![\includegraphics[width=0.7\textwidth ,bb=0 0 294 182]{PriceBelowAboveTheLowerUpperBand.png}](images/img-0069.png)
Buy - Price is below lower band
Sell - Price is above upper band
Parameters available:
Period - the number of periods used in the calculation of moving average
Exponential - Select ’yes’ to use exponential moving average otherwise use simple moving average
Envelope - the percentage used to calculate upper band and lower band
Rule type - please refer to 140 for details
Data type - please refer to 141 for details
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