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The open the TopN View, select Views -> TopN from the opCharts menu bar. The TopN view is actually a collection, or predefined dashboard, comprised of six opCharts Components. Any of these TopN charts can each be added to a new or existing Dashboard (see: Dashboards for more information) to create custom views. The small graphs for each TopN are called "sparklines", they give you an impression of the full graph which you can see by clicking on the TopN.
Detail Pages
Please see these additional pages for more detailed information on using opCharts.
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