Create a report with two lists.
Insert a single Data Item (Product Name) in list one.
Right click the Data Item (Product Name) in the list and go to Drill Through.
Add a new Drill Through, and choose the Bookmark tab. Set Source Type to Data Item Value.
Now insert some data items along with product line (Product Name, Quantity, Unit price e.t.c.)
Click on product name and create section.
Insert book mark by unlocking the report into the Product Name section.
Set the Bookmark property for Source Type to Data Item Value.
Set the Bookmark property for Data Item Value to Product Name.
Note: These book marks will not work in HTML format as the page gets changed. Test it in PDF.

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