or example, let's implement customizable formatting of our <code class="computeroutput"><span class="identifier">point</span></code> objects, so that the following
          format string works as expected:
        </p>
<pre class="programlisting">%TimeStamp% %Coordinates(format="{%0.3f; %0.3f}")% %Message%</pre>
<p>
          The simple formatter factory ignores all additional parameters from the
          format string, so we have to implement our own factory instead. Custom
          factories are regist