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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>Sequence of rules that describe:
		<ul>
			<li>Legal attributes for each element type</li>
			<li>Legal child elements for each element type</li>
		</ul>
	</li>
	<li>Legal child elements are described by an ELEMENT rule:
		<blockquote><tt>
			&lt;!ELEMENT items (item*)&gt;
		</tt></blockquote>
		<tt>items</tt> must contain 0 or more <tt>item</tt> elements
	</li>
	<li>Delimited by <tt>&lt;!. . .&gt;</tt></li>
	<li>Contains element whose children are to be constrained</li>
	<li>Followed by description of children</li>
</ul>

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