a that, after being combined
with any other streams it references, is structured such that it
holds information contained within <span class="term">
elements</span> that are organized as defined in the associated
<span class="term">DTD</span>. See <a href="#docconf">Document
Conformance</a> for more information.</dd>

<dt>Element</dt>

<dd>An element is a document structuring unit declared in the
<span class="term">DTD</span>. The element's content model is
defined in the <span class="term">DTD</span>, and 