put"><span class="identifier">name</span></code> argument of <code class="computeroutput"><span class="identifier">create_formatter</span></code>
          to identify the attribute so that the same factory can be used for different
          attributes.
        </p>
<p>
          The <code class="computeroutput"><span class="identifier">point_formatter</span></code> is
          our custom formatter based on <a href="http://www.boost.org/doc/libs/release/libs/format/index.html" target="_top">Boost.Format</