This is a Normalized ATR, which means it displays ATR as a percentage instead of absolute price. For example, a value of 1 indicates a true range of 1% in a given period.
This indicator creates a moving average of the volatility of a product going back X number of periods and is useful for deciding what to trade. For example, if used on a daily chart, one product displays a value of 4 you can reasonably expect it to have larger price swings and movement compared to another product that displays 1.
It does not predict direction, rather the size of moves.