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<title>Internal DTD Subset</title>
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<td valign="top" class="NAME">Internal DTD Subset</td>
<td valign="top" class="COMPATIBILITY">&nbsp;</td>
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<p>The 
internal DTD subset is the portion of
the document type definition included directly within the document
type declaration between the <span class="LITERAL">[</span> and
<span class="LITERAL">]</span> characters. The internal DTD subset can contain
markup declarations and parameter entity references, but not
conditional sections. A single document may have both internal and
external DTD subsets, which, when taken together, form the complete
document type definition. The following example shows an internal
subset, which appears between the <span class="LITERAL">[</span> and
<span class="LITERAL">]</span> characters:</p>

<span class="PROGRAMLISTING"><pre>&lt;!DOCTYPE furniture_item SYSTEM "furniture.dtd"
[
&lt;!ENTITY % bookcase_ex SYSTEM "Bookcase_ex.ent"&gt;
     
%bookcase_ex;
     
&lt;!ENTITY bookcase_pic SYSTEM "bookcase.gif" NDATA gif&gt;
&lt;!ENTITY parts_list SYSTEM "parts_list.ent"&gt;
]&gt;</pre></span></td></tr>
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