<a href="http://stockcharts.com/school/doku.php?id=chart_school:chart_analysis:chart_patterns:double_bottom" target="_blank">http://stockcharts.com/school/doku.php?id=chart_school:chart_analysis:chart_patterns:double_bottom</a> it does. dbl bottom, does not need interpretors. for it to signl reversl is different.