Comments about the navigational set up were especially helpful and I have
posted a redesigned interface (only the Introduction section is posted at
Comments about something happening when a user clicks on the "wrong" thing
reminded me about a very important thing I learned and forgot to put in place
in the introduction. Many thanks for pointing that out and I will be revising
the introduction soon with that in mind. I will also keep it in mind when
working on the rest of the site.