OpenXML and comparing versions

I am launching into using some OpenXML and found this nifty tool called the "OpenXML SDK 2.0 Productivity Tool for Microsoft Office" that is able to navigate the XML structure of the Office 20007+ document, and if you click on a node in the tree, it can show you the C# code that you would use to create that part of the document. It also has a nice XML file comparison tool built in that is smart enough to match up nodes of the XML tree regardless of the order they are in. It is part of the OpenXML SDK 2.0 download from http://www.microsoft.com/downloads.