What is this indicator?
Two lines that measure the relative strength of upward and downward movement; a crossover between them signals a probable trend change. This indicator is used mostly to confirm the start or end of a trend.
How to read the chart
When the indicator's main line takes on a clear direction, it usually confirms the market's dominant trend in that same direction; crossovers and changes in slope are the main points of focus.
Practical tip
It's best to use this indicator alongside a momentum indicator so that both trend direction and trend strength can be measured.