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Next: <a href="Sample-Include-File.html" accesskey="n" rel="next">Sample Include File</a>, Previous: <a href="texinfo_002dmultiple_002dfiles_002dupdate.html" accesskey="p" rel="prev"><code>texinfo-multiple-files-update</code></a>, Up: <a href="Include-Files.html" accesskey="u" rel="up">Include Files</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Command-and-Variable-Index.html" title="Index" rel="index">Index</a>]</p>
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<span id="Include-Files-Requirements-1"></span><h3 class="section">18.3 Include Files Requirements</h3>
<span id="index-Include-files-requirements"></span>
<span id="index-Requirements-for-include-files"></span>
<p>If you plan to use the <code>texinfo-multiple-files-update</code> command,
the outer Texinfo file that lists included files within it should
contain nothing but the beginning and end parts of a Texinfo file, and
a number of <code>@include</code> commands listing the included files. It
should not even include indices, which should be listed in an included
file of their own.
</p>
<p>Moreover, each of the included files must contain exactly one highest
level node (conventionally, <code>@chapter</code> or equivalent),
and this node must be the first node in the included file.
Furthermore, each of these highest level nodes in each included file
must be at the same hierarchical level in the file structure.
Usually, each is a <code>@chapter</code>, an <code>@appendix</code>, or an
<code>@unnumbered</code> node. Thus, normally, each included file contains
one, and only one, chapter or equivalent-level node.
</p>
<p>The outer file should contain only <em>one</em> node, the ‘Top’ node. It
should <em>not</em> contain any nodes besides the single ‘Top’ node. The
<code>texinfo-multiple-files-update</code> command will not process
them.
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