The use of BOLL (Bollinger Bands)

Usage of Bollinger

1. When the stock price rises and crosses the time limit of the Bollinger Line, there is a high probability of a pullback;

2. When the stock price falls and crosses the Bollinger Line below the limit, there is a high probability of a rebound;

When the vibration band of the Bollinger Line narrows, it indicates that the disk is approaching;

4. BOLL must be used in conjunction with BB and WIDTH;

If the switch parameter is set to 1, the graph is represented by four lines.