 existing HTML documents. The values of these attributes
must be unique within the document, valid, and any references to these 
fragment identifiers (both
internal and external) must be updated should the values be changed during
conversion.</p>
<p>Finally, note that XHTML 1.0 has deprecated the
<code>name</code> attribute of the <code>a</code>, <code>applet</code>, <code>frame</code>, <code>iframe</code>, <code>img</code>, and <code>map</code>
elements, and it will be
removed from XHTML in subsequent vers