Vol Bars (Column)
The volume at price level with time-based color shading so you can compare volume levels with price activity. Heavy volume is displayed in larger volume bars than light volume. Volume is important because it gives you a good indication of the strength or weakness of a price trend.
Logically, when a market price is in an up trend, there should be more buying than selling. Conversely, when the price is in a downtrend, there should be more selling than buying. In any valid up trend or downtrend, the volume bars should confirm that trend. For example, in a bullish trend there should be heavy volume.