supplied attribute
                    type and use it for output generation. This generator never fails
                    (unless the underlying output stream reports an error).
                  </p>
                </td>
</tr>
<tr>
<td>
                  <p>
                    <code class="computeroutput"><span class="identifier">auto_</span><span class="special">(</span><span class="identifier">s</span><span class="special">)</span></code>
                  </p>
                </td>
<td>
           