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<head>
<title>UK TeX FAQ -- question label subsubsub</title>
</head><body>
<h3>How to create a <code>\</code><code>subsubsubsection</code></h3>
<p>LaTeX's set of "sections" stops at the level of
<code>\</code><code>subsubsection</code>. This reflects a design decision by Lamport -
for, after all, who can reasonably want a section with such huge
strings of numbers in front of it?
<p>In fact, LaTeX standard classes <em>do</em> define "sectioning"
levels lower than <code>\</code><code>subsubsection</code>, but they don't format them like
sections (they're not numbered, and the text is run-in after the
heading). These deeply inferior section commands are <code>\</code><code>paragraph</code>
and <code>\</code><code>subparagraph</code>; you can (if you <em>must</em>) arrange that these
two commands produce numbered headings, so that you can use them as
<code>\</code><code>subsubsubsection</code>s and lower.
<p>The <i>titlesec</i> allows you to adjust the definitions of the
sectioning macros, and it may be used to
transform a <code>\</code><code>paragraph</code>'s typesetting so that it looks like that
of a <code>\</code><code>section</code>.
<p>If you want to program the change yourself, you'll find that the
commands (<code>\</code><code>section</code> all the way down to <code>\</code><code>subparagraph</code>) are
defined in terms of the internal <code>\</code><code>@startsection</code> command, which
takes 6 arguments. Before attempting this sort of work, you are well
advised to read the LaTeX sources (<i>ltsect.dtx</i> in the
LaTeX distribution) and the source of the standard packages
(<i>classes.dtx</i>). The <a href="FAQ-books.html">LaTeX Companion</a>
discusses use of <code>\</code><code>@startsection</code> for this sort of thing.
<dl>
<dt><tt><i>LaTeX source</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/base.zip">macros/latex/base</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/base.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/base/">browse</a>)
<dt><tt><i>titlesec.sty</i></tt><dd><a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/titlesec.zip">macros/latex/contrib/titlesec</a> (<a href="ftp://cam.ctan.org/tex-archive/macros/latex/contrib/titlesec.tar.gz">gzipped tar</a>, <a href="http://www.tex.ac.uk/tex-archive/macros/latex/contrib/titlesec/">browse</a>)
</dl>
<p><p>This question on the Web: <a href="http://www.tex.ac.uk/cgi-bin/texfaq2html?label=subsubsub">http://www.tex.ac.uk/cgi-bin/texfaq2html?label=subsubsub</a>
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