Tools lets you access to Janitoo extensions (components, thread, values, ...) in this package and the development tools reports : Travis, Coversall, Lanscape, Nose, Coverage, ... (if available).
Reference links you to the code documentation.
Site is a menu for navigating between sections of the table of index.
The last 1 or 2 sections before the search engine allows you to browse the documentation between section of the table of index.