[Zope] Installed Products

[Tim Cook]

When I create a Product of course all of my objects are there to
be seen and edited through the management interface.  When I
install Squishdot, zPDFDocument etc.  There is nothing in the
Product folder.  I thought it would be a great educational
resource to see how these products were built and what THEY
looked like in the MI. I know I can use an editor or file viewer
to get to the code. But why is it not available in the MI or what
am I missing in building my product(s)?

Thanks,
-- Tim --
Opportunity is missed by most people because it is dressed in
overalls and looks like work.
Thomas Edison