L]]
									<code>img</code>, <code>object</code> or <code>iframe</code> element).</p>
						</td>
					</tr>
					<tr>
						<th>Applies to:</th>
						<td><a href="epub-spec.html#dfn-xhtml-content-document">XHTML Content Documents</a>; the value is implied for <a href="epub-spec.html#dfn-svg-content-document">SVG Content Documents</a>.</td>
					</tr>
					<tr>
						<th>Cardinality:</th>
						<td>
							<code>Zero or more</code>
						</td>
					</tr>
					<tr>
						<th>Usage:</th>
						<td>MUST be 