The general structure of the site is (all pages, sub-pages are on the left navigation bar):
Top level (pages) - "FAQs Home" ; "About the FACET FAQ Pages"
Second level (sub-pages) - These are slightly indented on the left navigation bar. Examples are "General Information", "E-205"
Third level - lists of FAQs for the particular sub-page
Fourth level - FAQs within a single list.