Building the Foundation of the Design - Autodesk Inventor 2010: No Experience Required - page 90

The fl at pattern isn't a separate fi le. Instead, it resides as a parallel
state in the Browser. The folded model is also maintained in the
Browser, but it's grayed out and therefore inactive.
12. Double-click the folded model in the browser. Doing so restores the
visibility of the folded part.
13. Restore the home view.
FIGURE 2.35 When a feature-creation tool in Inventor has enough
information to create geometry, it usually offers a preview.
FIGURE 2.36 Width Extents options allow you make common
modifications quickly.