The indicator differs from the technical indicator “Bollinger Bands” in that it can independently adjust the parameters of the upper and lower bands (period, shift and deviation); the average band is calculated as the arithmetic mean.

• Period Upper Line – period of the upper line
• Period Lower Line – the period of the lower line
• Shift Upper Line – shift the upper line
• Shift Lower Line – shift the lower line
• Deviation Upper Line-deviations of the upper line
• Deviation Lower Line-deviations of the lower line

This indicator is used by the “Bollinger Bands strategy” Expert Advisor and is provided for convenience in the visual selection of parameters.