These pages have been rendered entirely from XML source files using XSL stylesheets. The benefit of this method is separation of content and presentation. By changing the XSL stylesheet, any changes to the presentation would be applied consistently throughout the site. Example changes could be: changing the layout and navigation consistently throughtout the site; or making the whole site available in PDF or Word formats; or creating small versions of all pages for palm-top access devices.
Among the presentation details handled by the XSL stylesheet are the navigation, title and copyright notices on every page.