One of the simplest and most effective charting tools are trend lines – use them. Draw a straight line that join two points on the chart. Up trend lines are drawn along two successive lows and down trend lines are drawn along two successive peaks. Prices will often pull back to trend lines before resuming their trend. The breaking of trend lines often signals a change in a trend. The longer a trend line has been in effect, and the more times it has been tested, the more significant it becomes; a trend line becomes valid if it is touched at least three times.