nav.footer-logos
	ul
		footer_logos = {'NASA': {'National Aerospace Agency':'http://nasa.gov'},'ESA': {'European Space Agency':'http://www.esa.int/ESA'}}
		each desc, name in footer_logos
			each url, title in desc
				li(class='#{name.toLowerCase()}')
					a(href='#{url}',title='#{title}')
						span #{name}
                        
//Produces:
//<nav class="footer-logos">
//  <ul>
//    <li class="nasa"><a href="http://nasa.gov" title="National Aerospace Agency"><span>NASA</span></a></li>
//    <li class="esa"><a href="http://www.esa.int/ESA" title="European Space Agency"><span>ESA</span></a></li>
//  </ul>
//</nav>