Distribution of deals by price levels at a given time interval. Displayed as a histogram. The width of the histogram at the level means the number of transactions carried out on it. If a broker provides data on a real volume, the indicator is able to display distribution on it as well. Original codes is here: https://www.mql5.com/en/code/15440 but it doesn't work on new builds of MT5 I just compiled for new builds.