<span class="plainlinks">[[template:-]] (<small>[http://meta.wikimedia.org/w/index.php?title=Template:-&action=edit edit]•[[template talk:-|talk]]•[http://meta.wikimedia.org/w/index.php?title=Special:Whatlinkshere/template:-&limit=500 links]•[http://meta.wikimedia.org/w/index.php?title=Template:-&action=history history]</small>)</span> "clears" both margins; it is often used before a header to make sure that header will be the full width of the page.