Contributed by: Wouter van Vugt of Info Support. Wouter is responsible for development and support of a .NET training curriculum with an emphasis on C#, ASP.NET and Office development.
The Package Explorer utility provides the ability to open an Open XML package and browse through the relationships and parts. It supports navigation of embedded sub-packages and uses an object model that provides a clean separation between the UI and the packaging model.
You can use this utility to learn about Open XML, by browsing through documents to see their logical structure. It is provided with full source code, so you can also use it as a starting point for other types of Open XML projects.