Moving Average Envelopes consist of moving averages calculated from the underling price, shifted up and down by a fixed percentage.
Moving Average Envelopes (or trading bands) can be imposed over an actual price or another indicator.
When prices raise above the upper band or fall below the lower band, a change in direction may occur when the price penetrates the band after a small reversal from the opposite direction.
int Moving Average Type
Shift is a double value specifying the percentage of shift for each moving average from the actual values.