Page structure
we should avoid the need for horizontal scrolling
The page structure should also allow users to print pages.
Navigation structure
non-linear navigation has to be avoided at any cost.
navigation structure as quickly as possible, allowing users to “memorize the sitemap
(“Where am I?”), (“What can I do or find here?”), (“Where can I go?”)
mind that browsers offer additional context-independent navigation elements (“Back”, “Bookmark”, etc.)