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📁 《Big C++ 》Third Edition电子书和代码全集-Part1

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<h2><font color="#009999">29.4 Document Type Definitions (cont.)</font></h2>
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<ul>
	<li>Expressions can be combined:
		<blockquote><tt>
			&lt;!ELEMENT section (title, (paragraph | (image, title?))+)&gt;
		</tt></blockquote>
	</li>
	<li>Defines an element <tt>section</tt> whose children are:
		<ol>
			<li>A <tt>title</tt> element</li>
			<li>A sequence of one or more of:
				<ul>
					<li><tt>paragraph</tt> elements</li>
					<li><tt>image</tt> elements followed by optional <tt>title</tt>
						elements</li>
				</ul>
			</li>
		</ol>
	</li>
	<li>Avoid mixed content for DTDs</li>
	<li>Avoid <tt>ANY</tt> type in DTDs</li>
</ul>

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