This lower indicator is a quick visual way to see if buyers or sellers are in control of a security. Each bar shows red (selling pressure) and green (buying pressure) as well as the percentage of buying or selling pressure on the current bar and the trend of the pressure if any in labels on the left side. There is also a blue horizontal line that is the average volume for the period. The default period is 21 but can be set to whatever range that fits your trading style.