an></code>
          is a Spirit supplied support class. Most of the time it stands for 'I don't
          care, just use the appropriate default'.
        </p>
<p>
          All following examples generate outputs of the form:
        </p>
<pre class="programlisting"><span class="string">"{integer}"</span>
</pre>
<p>
          An integer inside the curly braces.
        </p>
<p>
          The first example shows how to attach a plain function:
        </p>
<p>
</p>
<pre class="programlisting"><span class="