Excess to buy or sell
It is often said that the market falls overbought or oversold. The oscillator analysis is useful to ensure how the forex market exceeds. It is basically most powerful when the forex market holds in a box range, but it would suggest the timing to trade in a short run, accompanied with a chart. Take care of the warning coming from the oscillator because it precedes the market movement.
Most software for technical analysis equips various kinds of charts, and you will make out at a glance.