<P> Dead links should be repaired or replaced if possible . Do not delete a citation merely because the URL is not working . Follow these steps when you encounter a dead URL being used as a reliable source to support article content: </P> <Ol> <Li> Confirm status: First, check the link to confirm that it is dead and not temporarily down . Search the website to see whether it has been rearranged . The online service "Is it down right now?" can help to determine if a site is down, and any information known . </Li> <Li> Check for a changed URL on the same Web site: Pages are frequently moved to different location on the same site as they become archive content rather than news . The site's error page may have a "Search" box; alternatively, in the popular Google search engine the keyterm "site:" is used, as in ⟨ site: en.wikipedia.org "New Zealand police vehicle markings and livery" ⟩ . </Li> <Li> Check for web archives: Many Web archiving services exist; link to their archive of the URL's content, if available . Examples: <Ul> <Li> Internet Archive has billions of archived web pages . See Wikipedia: Using the Wayback Machine . </Li> <Li> WebCite has billions of archived web pages . See Wikipedia: Using WebCite . </Li> <Li> The UK Government Web Archive (http://www.nationalarchives.gov.uk/webarchive/) preserves 1500 UK central government websites . </Li> <Li> The Mementos interface allows you to search multiple archiving services with a single request using the Memento protocol . Unfortunately, the Mementos web page interface removes any parameters which are passed with the URL . If the URL contains a "?" it is unlikely to work properly . When entering the URL into the Mementos interface manually, the most common change needed is to change "?" to "% 3F". While making only this change will not be sufficient in all cases, it will work most of the time . The bookmarklet in the table below will properly encode URLs such that searches will work . </Li> </Ul> </Li> </Ol> <Li> Confirm status: First, check the link to confirm that it is dead and not temporarily down . Search the website to see whether it has been rearranged . The online service "Is it down right now?" can help to determine if a site is down, and any information known . </Li> <Li> Check for a changed URL on the same Web site: Pages are frequently moved to different location on the same site as they become archive content rather than news . The site's error page may have a "Search" box; alternatively, in the popular Google search engine the keyterm "site:" is used, as in ⟨ site: en.wikipedia.org "New Zealand police vehicle markings and livery" ⟩ . </Li>

Explain how to use other sources of information to support data