pages
A page is the basic entity or container that corresponds to a webpage. It is a container in that is contains the page elements such as title, text, pictures, etc. but also because each page an can have sub pages. A tree of pages with the home page at the top forms a page set. A company can have several page sets either to service multiple domains or as inactive copies. One domain has one page set and when combined with a theme forms a website. A page set can be used multiple times by attaching to more than one domain.