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We also 0016 gratefully acknowledge additional material appearing in 0017 latex2e-reference by Martin Herbert Dietze. (From these references no 0018 text was directly copied.) 0019 0020 Copyright 2007, 2008, 2009, 2010, 2011, 2012, 2013, 0021 2014, 2015, 2016, 2017, 2018 Karl Berry. 0022 0023 Copyright 1988, 1994, 2007 Stephen Gilmore. 0024 0025 Copyright 1994, 1995, 1996 Torsten Martinsen. 0026 0027 Permission is granted to make and distribute verbatim copies of 0028 this manual provided the copyright notice and this permission notice 0029 are preserved on all copies. 0030 0031 0032 Permission is granted to copy and distribute modified versions of this 0033 manual under the conditions for verbatim copying, provided that the entire 0034 resulting derived work is distributed under the terms of a permission 0035 notice identical to this one. 0036 0037 Permission is granted to copy and distribute translations of this manual 0038 into another language, under the above conditions for modified versions. --> 0039 <!-- Created by GNU Texinfo 6.5, http://www.gnu.org/software/texinfo/ --> 0040 <head> 0041 <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 0042 <title>\subsection (LaTeX2e unofficial reference manual (November 2018))</title> 0043 0044 <meta name="description" content="\subsection (LaTeX2e unofficial reference manual (November 2018))"> 0045 <meta name="keywords" content="\subsection (LaTeX2e unofficial reference manual (November 2018))"> 0046 <meta name="resource-type" content="document"> 0047 <meta name="distribution" content="global"> 0048 <meta name="Generator" content="makeinfo"> 0049 <link href="index.html#Top" rel="start" title="Top"> 0050 <link href="IndexDocument.html#Index" rel="index" title="Index"> 0051 <link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> 0052 <link href="Sectioning.html#Sectioning" rel="up" title="Sectioning"> 0053 <link href="_005csubsubsection-_0026-_005cparagraph-_0026-_005csubparagraph.html#g_t_005csubsubsection-_0026-_005cparagraph-_0026-_005csubparagraph" rel="next" title="\subsubsection & \paragraph & \subparagraph"> 0054 <link href="_005csection.html#g_t_005csection" rel="prev" title="\section"> 0055 <style type="text/css"> 0056 <!-- 0057 /* $Id: latex2e.css 690 2018-09-15 15:20:19Z jimhefferon $ 0058 Minor css for latexrefman. Public domain. 0059 Originally written by Jim Hefferon and Karl Berry, 2018. */ 0060 0061 /* So you can style for yourself */ 0062 @import url("/css/latexreflocal.css"); 0063 0064 0065 0066 a.summary-letter {text-decoration: none} 0067 blockquote.indentedblock {margin-right: 0em} 0068 blockquote.smallindentedblock {margin-right: 0em; font-size: smaller} 0069 blockquote.smallquotation {font-size: smaller} 0070 div.display {margin-left: 3.2em} 0071 div.example {margin-left: 3.2em} 0072 div.lisp {margin-left: 3.2em} 0073 div.smalldisplay {margin-left: 3.2em} 0074 div.smallexample {margin-left: 3.2em} 0075 div.smalllisp {margin-left: 3.2em} 0076 kbd {font-style: oblique} 0077 pre.display {font-family: inherit} 0078 pre.format {font-family: inherit} 0079 pre.menu-comment {font-family: serif} 0080 pre.menu-preformatted {font-family: serif} 0081 pre.smalldisplay {font-family: inherit; font-size: smaller} 0082 pre.smallexample {font-size: smaller} 0083 pre.smallformat {font-family: inherit; font-size: smaller} 0084 pre.smalllisp {font-size: smaller} 0085 span.nolinebreak {white-space: nowrap} 0086 span.roman {font-family: initial; font-weight: normal} 0087 span.sansserif {font-family: sans-serif; font-weight: normal} 0088 ul.no-bullet {list-style: none} 0089 BODY { 0090 margin-top: 1em; 0091 margin-left: 1em; /* auto results in two-digit <ol> lost off left */ 0092 margin-right: 1em; 0093 margin-bottom: 1em; 0094 /* the idea is to use the whole window, unless it is ridiculously 0095 wide, probably with too-small fonts, too. */ 0096 max-width: 64em; 0097 } 0098 0099 /* Because we want @math{... @code ...} to be upright, not slanted, 0100 and Texinfo won't fix it. */ 0101 code {font-style:normal; font-family:monospace; } 0102 0103 /* We put a link to our own home page at the bottom. */ 0104 div.referenceinfo {font-size:small;} 0105 0106 --> 0107 </style> 0108 0109 0110 </head> 0111 0112 <body lang="en"> 0113 <a name="g_t_005csubsection"></a> 0114 <div class="header"> 0115 <p> 0116 Next: <a href="_005csubsubsection-_0026-_005cparagraph-_0026-_005csubparagraph.html#g_t_005csubsubsection-_0026-_005cparagraph-_0026-_005csubparagraph" accesskey="n" rel="next">\subsubsection & \paragraph & \subparagraph</a>, Previous: <a href="_005csection.html#g_t_005csection" accesskey="p" rel="prev">\section</a>, Up: <a href="Sectioning.html#Sectioning" accesskey="u" rel="up">Sectioning</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="IndexDocument.html#Index" title="Index" rel="index">Index</a>]</p> 0117 </div> 0118 <hr> 0119 <a name="g_t_005csubsection-1"></a> 0120 <h3 class="section">6.4 <code>\subsection</code></h3> 0121 0122 <a name="index-_005csubsection-1"></a> 0123 <a name="index-subsection-1"></a> 0124 0125 <p>Synopsis, one of: 0126 </p> 0127 <div class="example"> 0128 <pre class="example">\subsection{<var>title</var>} 0129 \subsection*{<var>title</var>} 0130 \subsection[<var>toc-title</var>]{<var>title</var>} 0131 </pre></div> 0132 0133 <p>Start a subsection. The standard LaTeX classes <code>article</code>, 0134 <code>book</code>, and <code>report</code> all have this command. 0135 </p> 0136 <p>This produces a subsection. 0137 </p> 0138 <div class="example"> 0139 <pre class="example">We will show that there are more functions than Turing machines and that 0140 therefore some functions have no associated machine. 0141 0142 \subsection{Cardinality} We will begin with two paradoxes that 0143 dramatize the challenge to our intuition posed by comparing the sizes of 0144 infinite sets. 0145 </pre></div> 0146 0147 <p>For the standard LaTeX classes <code>book</code> and <code>report</code> the 0148 default output is like ‘<samp>1.2.3 <var>title</var></samp>’ (for chapter 1, 0149 section 2, subsection 3), alone on its line and flush left, in 0150 boldface and a larger type (the type size is <code>\large</code>). The same 0151 holds in <code>article</code> except that there are no chapters in that class 0152 so it looks like ‘<samp>2.3 <var>title</var></samp>’. 0153 </p> 0154 <p>The <code>*</code> form shows <var>title</var>. 0155 But it does not show the section number, does not increment the 0156 <code>section</code> counter, and produces no table of contents entry. 0157 </p> 0158 <p>The optional argument <var>toc-title</var> will appear as the section title 0159 in the table of contents (see <a href="Table-of-contents-etc_002e.html#Table-of-contents-etc_002e">Table of contents etc.</a>). If it is 0160 not present then <var>title</var> will be there. This shows the full name in 0161 the title of the section, 0162 </p> 0163 <div class="example"> 0164 <pre class="example">\subsection[$\alpha,\beta,\gamma$ paper]{\textit{The Origin of 0165 Chemical Elements} by R.A.~Alpher, H.~Bethe, and G.~Gamow} 0166 </pre></div> 0167 0168 <p>but only ‘<samp>α,β,γ 0169 paper</samp>’ on the contents page. 0170 </p> 0171 <p>For determining which sectional units are numbered and which appear in 0172 the table of contents, the level number of a subsection is 2 0173 (see <a href="Sectioning.html#Sectioning_002fsecnumdepth">Sectioning/secnumdepth</a> and see <a href="Sectioning.html#Sectioning_002ftocdepth">Sectioning/tocdepth</a>). 0174 </p> 0175 <a name="index-package_002c-indentfirst-3"></a> 0176 <a name="index-indentfirst-package-3"></a> 0177 0178 <p>The paragraph that follows the subsection title is not indented, as is a 0179 standard typographical practice. One way to get an indent is to use the 0180 package <samp>indentfirst</samp>. 0181 </p> 0182 <a name="index-package_002c-titlesec-4"></a> 0183 <a name="index-titlesec-package-4"></a> 0184 0185 <p>There are a number of ways to change the behavior of the 0186 <code>\subsection</code> command. One is the <code>\@startsection</code> command 0187 (see <a href="_005c_0040startsection.html#g_t_005c_0040startsection">\@startsection</a>). There are also many packages on CTAN that 0188 address this, including <samp>titlesec</samp>. See the documentation but the 0189 example below gives a sense of what they can do. 0190 </p> 0191 <div class="example"> 0192 <pre class="example">\usepackage{titlesec} % in preamble 0193 \titleformat{\subsection}[runin] 0194 {\normalfont\normalsize\bfseries} % format of the title 0195 {\thesubsection} % label 0196 {0.6em} % space between label and title 0197 {} % before-code hook 0198 </pre></div> 0199 0200 <p>That puts the subsection number and <var>title</var> in the first line of 0201 text. 0202 </p> 0203 0204 0205 0206 <hr/><div class='referenceinfo'> <a href='https://latexref.xyz/'> <i>Unofficial LaTeX2e reference manual</i></a></div> 0207 </body> 0208 </html>