Bollinger Bands channel with the display of the last values as price labels.
The indicator uses SmoothAlgorithms.mqh library classes (copy it to <terminal_data_folder>\MQL5\Include). The use of the classes was thoroughly described in the article "Averaging Price Series for Intermediate Calculations Without Using Additional Buffers".
Figure 1. The XMA_BBx3 indicator
Translated from Russian by MetaQuotes Software Corp.
Original code: https://www.mql5.com/ru/code/14839
Trading system based on the signals of the BSI indicator.Price_Channel_Central_HTF
The Price_Channel_Central indicator with the timeframe selection option available in the input parameters.