Webtrends Analytics 9 Adminstration Guide, November 2012
If you use the Webtrends page of interest query parameter to track pages critical to evaluating success, you can report on visitors' engagement with tracked pages using Visitor History.
Webtrends provides the preconfigured Pages of Interest custom report that shows how each page of interest performs for new visitors and for visitors in each time period.
When you enable page of interest tracking in Visitor History, Webtrends generates page of interest visitor parameters which you can use as measures in the Page of Interest custom report. As a best practice, you should only use these measures in a report that includes the Pages of Interest dimension as the only dimension.