Login to the narrow range confuses many traders, but the theory is quite simple. Common sense dictates that the best time for the opening of a new position, just before the break up or down. The narrow range is characterized by low mobility, when conditions are ready for a large movement. Trader is a busy market in the price level and waits for the start of movement. The advantage of this method is that the position can be accessed with a small loss if the market breaks the other way.