As was mentioned earlier, there are two groups of pages within a site: public pages and private pages. Each page in a group is a part of a separate tree-like structure, reflecting levels in the website's information architecture. Pages in a tree can differ, depending on their purpose and origin. The page could be just a place where the information arranged in portlets is shown. It can provide a range of tools for users who manage the content of the website. It is also possible to add a page that is the link to another page of the same or a separate site. In addition, pages can be created as empty pages, copies of already existing ones, or can be based on defined templates.