Site plans may have a cyclical structure.
From the hub or homepage, the user may go to any other page in the site,
and all of the pages in the site link directly to the homepage (often via
the header in the page timeplate). The online rhetoric that is accessed
through the page header at the Worldwide Writers'
PLACE has this kind of sturcture. The homepage is at the hub;
the various stages of the writing process are linked around this hub: Discovery,
Planning, Drafting, Designing, Revising, Publishing. Extrat navigation
buttons are added for Search, Commons, and Homepage.