Oscillator DBB displays as two lines the chart of the price distance from the lines of indicator Bollinger Bands.
Two display options are possible:
The indicator has four configured parameters:

Fig 1. Displaying in percents

Fig. 2. Displaying in price points
Tradotto dal russo da MetaQuotes Ltd.
Codice originale https://www.mql5.com/ru/code/21035
FullDump
A trading strategy based on indicators iBands (Bollinger Bands, BB) and iRSI (Relative Strength Index, RSI).
ColorX2MA_x2_cloud_HTF
Two indicators ColorX2MA from different timeframes, the area between lines being filled with a cloud, the color of which corresponds with the trend direction on the market
Directional_Breakout
An indicator of the movement direction and stop.
haOpen
Indicator Heikin-Ashi Open.