One of the more advanced Parts List capabilities in Inventor is the ability to roll-up total quantities of common items in a parts list. This is accomplished through the "Group Settings" button in the Parts List dialog box. An example might be to get a total length of a particular material used in a design. This can be particularly useful when used in conjuction with the new Filter (search the blog for Dave's post) tool in Inventor's parts list.
For an example of parts list roll-up check out this video:
Contributed by Ben of the INCAT CAD Geeks
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