This indicator is of special use to options traders. It calculates the
historical volatility for comparison with the options-implied
volatility.

It is the standard volatility calculation. I compared this indicator’s
values with those of some commercial providers, and the numbers were
spot-on.

The indicator allows you to calculate historical volatility of the
close, open, high, low, median or average prices.

For more information, take a look at the video.