Clark -

I applied for a trial license - I think there may be more controls available in a full version - which might help with the moving around inside. It also saves out your scenes - so you could set up a scene that takes you to key points inside and then move around.

As I said - first try at it... I'm sure there are ways to tweak it - and if you can program - you can even load Java to it...

The one thing I haven't figured out yet is how to deal with hidden geometry. In some of those views I had components hidden - and it didn't take in the PDF. I'm going to test a file with components on layers turned on / off and see if that works.

Also - there are measurement tools, as well as sectioning tools. Pretty cool to be able to cut a section (derived by snapping 3 points on the model) through a PDF file and see what it happening inside...!