doesn't handle open polygons
        </li>
<li class="listitem">
          <a href="https://svn.boost.org/trac/boost/ticket/11930" target="_top">11930</a>
          Inaccuracy of area::huiller strategy
        </li>
<li class="listitem">
          <a href="https://svn.boost.org/trac/boost/ticket/11931" target="_top">11931</a>
          Wrong spherical area with pole encircling polygons
        </li>
<li class="listitem">
          <a href="https://svn.boost.org/trac/boost/ticket/12566" target="_top">12566</