 &lt;a href=&quot;preface.html&quot;&gt;Preface&lt;/a&gt;
&lt;/xsl:if&gt;</pre>
    </font></td>
  </tr>
</table>
</div>

<p>This includes a hyperlink in the output only if the current element has a <b>preface</b>
attribute.</p>


<hr>




<h3><a name="xsl:include">xsl:include</a></h3>


<p>The <b>xsl:include</b> element is always used at the top level of the stylesheet. It has a
mandatory <b>href</b> attribute, which is a URL (absolute or relative) of another stylesheet
to be textually