er">point</span></code>
          objects. If the parameter is found we create a formatter that invokes
          <code class="computeroutput"><span class="identifier">point_formatter</span></code> for the
          attribute values. Otherwise we create a default formatter that simply uses
          the <code class="computeroutput"><span class="keyword">operator</span><span class="special">&lt;&lt;</span></code>,
          like the simple formatter factory does. Note that we use the <code class="computerout