http://developers.de/blogs/damir_dobric/archive/2010/09/02/windows-phone-uri-mapping.aspxWindows Phone provides an UriMapper object. That object defines a mapping that will be used through the entire application for all navigation process. URI mapping are used to “hide” real navigation structure and provide query string parameters to theenCommunityServer 2008 SP1 (Build: 30619.63)