лента мёбиуса
<a href="//commons.wikimedia.org/w/index.php?title=User:Fropuff&amp;action=edit&amp;redlink=1" class="new" title="User:Fropuff (page does not exist)">User:Fropuff</a>
vectorized <a href="//commons.wikimedia.org/wiki/File:MobiusStrip-01.png" title="File:MobiusStrip-01.png">file:MobiusStrip-01.png</a>