Hypertext is usually a good candidate for the primary organization structure. A controlled vocabulary specifies the acceptable terms for use in a particular field. Back and forward arrows and a history menu are examples of browser navigation features. Among the advantages of frames are the saving of screen real estate, the preservation of the page model, and an increase in display speed. A site map is a graphical representation of the architecture of a web site.
Icons are almost always better than text as link labels.
All web sites should be searchable.