latex2e.xml June 2008 2.0 &latex;2e reference manual 2.0 This document is version 2.0 (June 2008) of an unofficial reference manual for &latex;, a document preparation system. &latex; is a macro package for &tex;. This was originally translated from LATEX.HLP v1.0a in the VMS Help Library. The pre-translation version was written by George D. Greenwade of Sam Houston State University. The &latex; 2.09 version was written by Stephen Gilmore. The &latex;2e version was adapted from this by Torsten Martinsen. Karl Berry made further updates and additions, and gratefully acknowledges using Hypertext Help with &latex;, by Sheldon Green, and the &latex; Command Summary (for &latex; 2.09) by L. Botway and C. Biemesderfer (published by the &tex; Users Group as &tex;niques number 10), as reference material (text was not directly copied). Copyright ©right; 2007, 2008 Karl Berry.&linebreak; Copyright ©right; 1988, 1994, 2007 Stephen Gilmore.&linebreak; Copyright ©right; 1994, 1995, 1996 Torsten Martinsen. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions. TeX &latex;: Structured documents for &tex; unofficial &latex; reference manual version 2.0, June 2008 This document is version 2.0 (June 2008) of an unofficial reference manual for &latex;, a document preparation system. &latex; is a macro package for &tex;. This was originally translated from LATEX.HLP v1.0a in the VMS Help Library. The pre-translation version was written by George D. Greenwade of Sam Houston State University. The &latex; 2.09 version was written by Stephen Gilmore. The &latex;2e version was adapted from this by Torsten Martinsen. Karl Berry made further updates and additions, and gratefully acknowledges using Hypertext Help with &latex;, by Sheldon Green, and the &latex; Command Summary (for &latex; 2.09) by L. Botway and C. Biemesderfer (published by the &tex; Users Group as &tex;niques number 10), as reference material (text was not directly copied). Copyright ©right; 2007, 2008 Karl Berry.&linebreak; Copyright ©right; 1988, 1994, 2007 Stephen Gilmore.&linebreak; Copyright ©right; 1994, 1995, 1996 Torsten Martinsen. Permission is granted to make and distribute verbatim copies of this manual provided the copyright notice and this permission notice are preserved on all copies. Permission is granted to copy and distribute modified versions of this manual under the conditions for verbatim copying, provided that the entire resulting derived work is distributed under the terms of a permission notice identical to this one. Permission is granted to copy and distribute translations of this manual into another language, under the above conditions for modified versions. Top Overview (dir) This document is version 2.0 (June 2008) of an unofficial reference manual for &latex;, a document preparation system. It is intended to cover &latex;2e, which has been the standard version of &latex; for many years. Knuth, Donald E.Lamport, Leslie&latex; Project team&latex; is implemented as a macro package for Donald E. Knuth's &tex; typesetting program. &latex; was originally created by Leslie Lamport; it is now maintained by a group of volunteers (http://latex-project.org). The official documentation written by the &latex; project is available there. Again, the present document is unofficial and has not been reviewed by the &latex; maintainers. Overview Overview What is &latex;? Starting & ending Starting & ending The standard beginning and end of a document. Document classes Document classes Some of the various classes available. Typefaces Typefaces And fonts, such as bold, italics etc. Layout Layout Controlling the page layout. Sectioning Sectioning How to section properly. Cross references Cross references Automatic referencing. Environments Environments Such as enumerate & itemize. Line breaking Line breaking Influencing line breaks. Page breaking Page breaking Influencing page breaks. Footnotes Footnotes How to produce footnotes. Definitions Definitions Define your own commands etc. Counters Counters Internal counters used by &latex;. Lengths Lengths The length commands. Making paragraphs Making paragraphs Paragraph commands. Math formulas Math formulas How to create mathematical formulas. Modes Modes Paragraph, Math or LR modes. Page Styles Page Styles Various styles of page layout. Spaces Spaces Horizontal and vertical space. Boxes Boxes Making boxes. Special insertions Special insertions Inserting reserved and special characters. Splitting the input Splitting the input Dealing with big files by splitting. Front/back matter Front/back matter Tables of contents, glossaries, indexes. Letters Letters The letter class. Terminal Input/Output Terminal Input/Output User interaction. Command Line Command Line System-independent command-line behavior. Document templates Document templates Starter templates for various document classes. Command Index Command Index Alphabetical list of &latex; commands. Concept Index Concept Index General index. Overview Starting & ending Top Top overview of &latex;&latex; overview The &latex; command typesets a file of text using the &tex; program and the &latex; “macro package” for &tex;. To be more specific, it processes an input file containing the text of a document with interspersed commands that describe how the text should be formatted. It produces at least three files as output: A main output file, which is one of: If invoked as latex, a “Device Independent” (.dvi) file. This contains commands that can be translated into commands for a variety of output devices. You can view such .dvi output of &latex; by using a program such as xdvi (display directly) or dvips (convert to PostScript). If invoked as pdflatex, a “Portable Document Format” (.pdf) file. Typically, this is a self-contained file, with all fonts and images embedded. This can be very useful, but it does make the output much larger than the .dvi produced from the same document. There are other less-common variants of &latex; (and &tex;) as well, which can produce HTML, XML, and other things. A “transcript” or .log file that contains summary information and diagnostic messages for any errors discovered in the input file. An “auxiliary” or .aux file. This is used by &latex; itself, for things such as sectioning. A &latex; command begins with the command name, which consists of a \ followed by either (a) a string of letters or (b) a single non-letter. Arguments contained in square brackets, [], are optional while arguments contained in braces, {}, are required. &latex; is case sensitive. Enter all commands in lower case unless explicitly directed to do otherwise. Starting & ending Document classes Overview Top starting & endingending & starting A minimal input file looks like the following: \documentclass{class} \begin{document} your text \end{document} where the class is a valid document class for &latex;. See Document classes, for details of the various document classes available locally. preamble, definedYou may include other &latex; commands between the \documentclass and the \begin{document} commands (this area is called the preamble). Document classes Typefaces Starting & ending Top document classesclasses of documents\documentclass The class of a given document is defined with the command: \documentclass[options]{class} The \documentclass command must be the first command in a &latex; source file. article classreport classbook classletter classslides classBuilt-in &latex; document class names are (many other document classes are available as add-ons; see Overview): article report book letter slides Standard options are described below. Document class options Document class options Global options. Document class options Document classes

document class optionsoptions, document classclass optionsglobal options You can specify so-called global options or class options to the \documentclass command by enclosing them in square brackets as usual. To specify more than one option, separate them with a comma: \documentclass[option1,option2,...]{class} Here is the list of the standard class options. 10pt option11pt option12pt optionAll of the standard classes except slides accept the following options for selecting the typeface size (default is 10pt): 10pt 11pt 12pt a4paper optiona5paper optionb5paper optionexecutivepaper optionlegalpaper optionletterpaper optionAll of the standard classes accept these options for selecting the paper size (default is letterpaper): a4paper a5paper b5paper executivepaper legalpaper letterpaper draft optionfinal optionfleqn optionlandscape optionleqno optionopenbib optiontitlepage optionnotitlepage optionMiscellaneous other options: draft, finalblack boxes, omitting mark/do not mark overfull boxes with a big black box; default is final. fleqn Put displayed formulas flush left; default is centered. landscape Selects landscape format; default is portrait. leqno Put equation numbers on the left side of equations; default is the right side. openbib Use “open” bibliography format. titlepage, notitlepage Specifies whether the title page is separate; default depends on the class. These options are not available with the slides class: onecolumn optiontwocolumn optiononeside optiontwoside optionopenright optionopenany option onecolumn twocolumn Typeset in one or two columns; default is onecolumn. oneside twoside\evensidemargin\oddsidemargin Selects one- or two-sided layout; default is oneside, except for the book class. The \evensidemargin (\oddsidemargin parameter determines the distance on even (odd) numbered pages between the left side of the page and the text's left margin. The defaults vary with the paper size and whether one- or two-side layout is selected. For one-sided printing the text is centered, for two-sided, \oddsidemargin is 40% of the difference between \paperwidth and \textwidth with \evensidemargin the remainder. openright openany Determines if a chapter should start on a right-hand page; default is openright for book. The slides class offers the option clock for printing the time at the bottom of each note. packages, loadingloading additional packages\usepackageAdditional packages are loaded like this: \usepackage[options]{pkg} To specify more than one pkg, you can separate them with a comma, or use multiple \usepackage commands. global optionsoptions, globalAny options given in the \documentclass command that are unknown by the selected document class are passed on to the packages loaded with \usepackage.

Typefaces Layout Document classes Top typefacesfonts Two important aspects of selecting a font are specifying a size and a style. The &latex; commands for doing this are described here. Font styles Font styles Select roman, italics etc. Font sizes Font sizes Select point size. Low-level font commands Low-level font commands Select encoding, family, series, shape. Font styles Font sizes Typefaces

font stylestypeface stylesstyles of text The following type style commands are supported by &latex;. These commands are used like \textit{italic text}. The corresponding command in parenthesis is the “declaration form”, which takes no arguments. The scope of the declaration form lasts until the next type style command or the end of the current group. The declaration forms are cumulative; i.e., you can say either \sffamily\bfseries or \bfseries\sffamily to get bold sans serif. You can also use the environment form of the declaration forms; for instance, \begin{ttfamily}...\end{ttfamily}. \textrm (\rmfamily)\textrm\rmfamily Roman. \textit (\itshape)\textit\itshape Italics. \emph\emphemphasis Emphasis (switches between \textit and \textrm). \textmd (\mdseries)\textmd\mdseries Medium weight (default). \textbf (\bfseries)\textbf\bfseries Boldface. \textup (\upshape)\textup\upshape Upright (default). The opposite of slanted. \textsl (\slshape)\textsl\slshape Slanted. \textsf (\sffamily)\textsf\sffamily Sans serif. \textsc (\scshape)\textsc\scshape Small caps. \texttt (\ttfamily)\texttt\ttfamily Typewriter. \textnormal (\normalfont)\textnormal\normalfont Main document font. \mathrm\mathrm Roman, for use in math mode. \mathbf\mathbf Boldface, for use in math mode. \mathsf\mathsf Sans serif, for use in math mode. \mathtt\mathtt Typewriter, for use in math mode. \mathit (\mit) Italics, for use in math mode. \mathnormal\mathnormal For use in math mode, e.g. inside another type style declaration. \mathcal\mathcal `Calligraphic' letters, for use in math mode. In addition, the command \mathversion{bold} \mathversioncan be used for switching to bold letters and symbols in formulas. \mathversion{normal} restores the default. &latex; also provides these commands, which unconditionally switch to the given style, that is, are not cumulative. They are used differently than the above commands, too: {\cmd ...} instead of \cmd{...}. These are two very different things. \bf\bfbold font Switch to bold face. \cal\calscript letters for mathcalligraphic letters for math Switch to calligraphic letters for math. \em\ememphasis Emphasis (italics within roman, roman within italics). \it\ititalic font Italics. \rm\rmroman font Roman. \sc\scsmall caps font Small caps. \sf\sfsans serif font Sans serif. \sl\slslanted fontoblique font Slanted (oblique). \tt\tttypewriter fontmonospace fontfixed-width font Typewriter (monospace, fixed-width).

Font sizes Low-level font commands Font styles Typefaces

font sizestypeface sizessizes of text The following standard type size commands are supported by &latex;. The table shows the command name and the corresponding actual font size used (in points) with the 10pt, 11pt, and 12pt document size options, respectively (see Document class options). \tiny\scriptsize\footnotesize\small\normalsize\large\Large\LARGE\huge\Huge 36 7 7 7 Command 10pt 11pt 12pt \tiny 5 6 6 \scriptsize 7 8 8 \footnotesize 8 9 10 \small 9 10 10.95 \normalsize (default) 10 10.95 12 \large 12 12 14.4 \Large 14.4 14.4 17.28 \LARGE 17.28 17.28 20.74 \huge 20.74 20.74 24.88 \Huge 24.88 24.88 24.88 The commands as listed here are “declaration forms”. The scope of the declaration form lasts until the next type style command or the end of the current group. You can also use the environment form of these commands; for instance, \begin{tiny}...\end{tiny}.

Low-level font commands Font sizes Typefaces

low-level font commandsfont commands, low-level These commands are primarily intended for writers of macros and packages. The commands listed here are only a subset of the available ones. \fontencoding{enc}\fontencoding Select font encoding. Valid encodings include OT1 and T1. \fontfamily{family}\fontfamily Select font family. Valid families include: • cmr for Computer Modern Roman cmss for Computer Modern Sans Serif cmtt for Computer Modern Typewriter and numerous others. \fontseries{series}\fontseries Select font series. Valid series include: • m Medium (normal) b Bold c Condensed bc Bold condensed bx Bold extended and various other combinations. \fontshape{shape}\fontshape Select font shape. Valid shapes are: • n Upright (normal) it Italic sl Slanted (oblique) sc Small caps ui Upright italics ol Outline The two last shapes are not available for most font families. \fontsize{size}{skip}\fontsize\baselineskip Set font size. The first parameter is the font size to switch to and the second is the line spacing to use; this is stored in a parameter named \baselineskip. The unit of both parameters defaults to pt. The default \baselineskip for the Computer Modern typeface is 1.2 times the \fontsize. \baselinestretchsetspace packageThe line spacing is also multiplied by the value of the \baselinestretch parameter when the type size changes; the default is 1. However, the best way to “double space” a document, if you should be unlucky enough to have to produce such, is to use the setspace package; see http://www.tex.ac.uk/cgi-bin/texfaq2html?label=linespace. \selectfont\selectfont The changes made by calling the four font commands described above do not come into effect until \selectfont is called. \usefont{enc}{family}{series}{shape}\usefont The same as invoking \fontencoding, \fontfamily, \fontseries and \fontshape with the given parameters, followed by \selectfont.

Layout Sectioning Typefaces Top layout commands Miscellaneous commands for controlling the general layout of the page. \onecolumn \onecolumn Use one-column layout. \twocolumn \twocolumn Use two-column layout. \flushbottom \flushbottom Make all text pages the same height. \raggedbottom \raggedbottom Allow text pages of differing height. Page layout parameters Page layout parameters \headheight \footskip. \onecolumn \twocolumn Layout

\onecolumnone-column output The \onecolumn declaration starts a new page and produces single-column output. This is the default.

\twocolumn \flushbottom \onecolumn Layout

\twocolumnmulticolumn texttwo-column output Synopsis: \twocolumn[text1col] The \twocolumn declaration starts a new page and produces two-column output. If the optional text1col argument is present, it is typeset in one-column mode before the two-column typesetting starts. These parameters control typesetting in two-column output: \columnsep\columnsep The distance between columns (35pt by default). \columnseprule\columnseprule The width of the rule between columns; the default is 0pt, so there is no rule. \columnwidth\columnwidth The width of the current column; this is equal to \textwidth in single-column text. These parameters control float behavior in two-column output: \dbltopfraction\dbltopfraction Maximum fraction at the top of a two-column page that may be occupied by floats. Default .7, can be usefully redefined to (say) .9 to avoid going to float pages so soon. \dblfloatpagefraction\dblfloatpagefraction The minimum fraction of a float page that must be occupied by floats, for a two-column float page. Default .5. \dblfloatsep\dblfloatsep Distance between floats at the top or bottom of a two-column float page. Default 12pt plus2pt minus2pt for 10pt and 11pt documents, 14pt plus2pt minus4pt for 12pt. \dbltextfloatsep\dbltextfloatsep Distance between a multi-column float at the top or bottom of a page and the main text. Default 20pt plus2pt minus4pt.

\flushbottom \raggedbottom \twocolumn Layout

\flushbottom The \flushbottom declaration makes all text pages the same height, adding extra vertical space where necessary to fill out the page. This is the default if twocolumn mode is selected (see Document class options).

\raggedbottom Page layout parameters \flushbottom Layout

\raggedbottomstretch, omitting vertical The \raggedbottom declaration makes all pages the natural height of the material on that page. No rubber lengths will be stretched.

Page layout parameters \raggedbottom Layout

page layout parametersparameters, page layoutlayout, page parameters forheader, parameters forfooter, parameters forrunning header and footer \headheight\headheight Height of the box that contains the running head. Default is 30pt, except in the book class, where it varies with the type size. \headsep\headsep Vertical distance between the bottom of the header line and the top of the main text. Default is 25pt, except in the book class, where it varies with the type size. \footskip\footskip Distance from the baseline of the last line of text to the baseline of the page footer. Default is 30pt, except in the book class, where it varies with the type size. \linewidth\linewidth Width of the current line; the default varies with the font size, paper width, two-column mode, etc. For an article document in 10pt, it's set to 345pt; in two-column mode, that becomes 229.5pt. \textheight\textheight The normal vertical height of the page body; the default varies with the font size, document class, etc. For an article or report document in 10pt, it's set to 43\baselineskip; for book, it's 41\baselineskip. For 11pt, it's 38\baselineskip and for 12pt, 36\baselineskip. \textwidth\textwidth The normal horizontal width of the page body; the default varies as usual. For an article or report document, it's 345pt at 10pt, 360pt at 11pt, and 390pt at 12pt. For a book document, it's 4.5in at 10pt, and 5in at 11pt or 12pt. \topmargin\topmargin Space between the top of the &tex; page (one inch from the top of the paper, by default) and the top of the header. The default is computed based on many other parameters: \paperheight − 2in − \headheight − \headsep − \textheight − \footskip, and then divided by two. \topskip\topskip Minimum distance between the top of the page body and the baseline of the first line of text. For the standard clases, the default is the same as the font size, e.g., 10pt at 10pt.

Sectioning Cross references Layout Top sectioning Sectioning commands provide the means to structure your text into units: \part\part \chapter\chapter (report and book class only) \section\section \subsection\subsection \subsubsection\subsubsection \paragraph\paragraph \subparagraph\subparagraph All sectioning commands take the same general form, e.g., \chapter[toctitle]{title} In addition to providing the heading title in the main text, the section title can appear in two other places: The table of contents. The running head at the top of the page. You may not want the same text in these places as in the main text. To handle this, the sectioning commands have an optional argument toctitle that, when given, specifies the text for these other places. *-form of sectioning commandsAlso, all sectioning commands have *-forms that print title as usual, but do not include a number and do not make an entry in the table of contents. For instance: \section*{Preamble} \appendixappendix, creatingThe \appendix command changes the way following sectional units are numbered. The \appendix command itself generates no text and does not affect the numbering of parts. The normal use of this command is something like \chapter{A Chapter} &dots; \appendix \chapter{The First Appendix} Cross references Environments Sectioning Top cross references One reason for numbering things like figures and equations is to refer the reader to them, as in “See Figure 3 for more details.” \label \label Assign a symbolic name to a piece of text. \pageref \pageref Refer to a page number. \ref \ref Refer to a section, figure or similar. \label \pageref Cross references

\label Synopsis: \label{key} A \label command appearing in ordinary text assigns to key the number of the current sectional unit; one appearing inside a numbered environment assigns that number to key. A key name can consist of any sequence of letters, digits, or punctuation characters. Upper and lowercase letters are distinguished. To avoid accidentally creating two labels with the same name, it is common to use labels consisting of a prefix and a suffix separated by a colon or period. Some conventionally-used prefixes: ch for chapters sec for lower-level sectioning commands fig for figures tab for tables eq for equations Thus, a label for a figure would look like fig:snark or fig.snark.

\pageref \ref \label Cross references

\pagerefcross referencing with page numberpage number, cross referencing Synopsis: \pageref{key} The \pageref{key} command produces the page number of the place in the text where the corresponding \label{key} command appears.

\ref \pageref Cross references

\refcross referencing, symbolicsection number, cross referencingequation number, cross referencingfigure number, cross referencingfootnote number, cross referencing Synopsis: \ref{key} The \ref command produces the number of the sectional unit, equation, footnote, figure, &dots;, of the corresponding \label command (see \label). It does not produce any text, such as the word `Section' or `Figure', just the bare number itself.

Environments Line breaking Cross references Top environments \begin\end &latex; provides many environments for marking off certain text. Each environment begins and ends in the same manner: \begin{envname} ... \end{envname} abstract abstract Produce an abstract. array array Math arrays. center center Centred lines. description description Labelled lists. displaymath displaymath Formulas that appear on their own line. document document Enclose the whole document. enumerate enumerate Numbered lists. eqnarray eqnarray Sequences of aligned equations. equation equation Displayed equation. figure figure Floating figures. flushleft flushleft Flushed left lines. flushright flushright Flushed right lines. itemize itemize Bulleted lists. letter letter Letters. list list Generic list environment. math math In-line math. minipage minipage Miniature page. picture picture Picture with text, arrows, lines and circles. quotation quotation Indented environment with paragraph indentation. quote quote Indented environment with no paragraph indentation. tabbing tabbing Align text arbitrarily. table table Floating tables. tabular tabular Align text in columns. thebibliography thebibliography Bibliography or reference list. theorem theorem Theorems, lemmas, etc. titlepage titlepage For hand crafted title pages. verbatim verbatim Simulating typed input. verse verse For poetry and other things. abstract array Environments

abstract environmentabstracts Synopsis: \begin{abstract} ... \end{abstract} Environment for producing an abstract, possibly of multiple paragraphs.

array center abstract Environments

array environmentarrays, math Synopsis: \begin{array}{template} col1 text&col1 text&coln}\\ ... \end{array} Math arrays are produced with the array environment, normally within an equation environment (see equation). It has a single mandatory template argument describing the number of columns and the alignment within them. Each column col is specified by a single letter that tells how items in that row should be formatted, as follows: c centered l flush left r flush right \\ (for array)Column entries are separated by &. Column entries may include other &latex; commands. Each row of the array is terminated with \\. @{...}In the template, the construct @{text} puts text between columns in each row. Here's an example: \begin{equation} \begin{array}{lrc} left1 & right1 & centered1 \\ left2 & right2 & centered2 \\ \end{array} \end{equation} \arraycolsepThe \arraycolsep parameter defines half the width of the space separating columns; the default is 5pt. See tabular, for other parameters which affect formatting in array environments, namely \arrayrulewidth and \arraystretch. The array environment can only be used in math mode.

center description array Environments

center environmentcentering text, environment for Synopsis: \begin{center} line1 \\ line2 \\ \end{center} \\ (for center)The center environment allows you to create a paragraph consisting of lines that are centered within the left and right margins on the current page. Each line is terminated with the string \\. \centering \centering Declaration form of the center environment.

\centering center \centeringcentering text, declaration for The \centering declaration corresponds to the center environment. This declaration can be used inside an environment such as quote or in a parbox. Thus, the text of a figure or table can be centered on the page by putting a \centering command at the beginning of the figure or table environment. Unlike the center environment, the \centering command does not start a new paragraph; it simply changes how &latex; formats paragraph units. To affect a paragraph unit's format, the scope of the declaration must contain the blank line or \end command (of an environment such as quote) that ends the paragraph unit. Here's an example: \begin{quote} \centering first line \\ second line \\ \end{quote} description displaymath center Environments

description environmentlabelled lists, creatingdescription lists, creating Synopsis: \begin{description} \item [label1] item1 \item [label2] item2 ... \end{description} \itemThe description environment is used to make labelled lists. Each label is typeset in bold, flush right. The item text may contain multiple paragraphs. bold typewriter, avoidingtypewriter labels in listsAnother variation: since the bold style is applied to the labels, if you typeset a label in typewriter using \texttt, you'll get bold typewriter: \item[\texttt{bold and typewriter}]. This may be too bold, among other issues. To get just typewriter, use \tt, which resets all other style variations: \item[{\tt plain typewriter}]. For details about list spacing, see itemize.

displaymath document description Environments

displaymath environment Synopsis: \begin{displaymath} math \end{displaymath} or \[math\] The displaymath environment (\[...\] is a synonym) typesets the math text on its own line, centered by default. The global fleqn option makes equations flush left; see Document class options. No equation number is added to displaymath text; to get an equation number, use the equation environment (see equation).

document enumerate displaymath Environments

document environment The document environment encloses the body of a document. It is required in every &latex; document. See Starting & ending.

enumerate eqnarray document Environments

enumerate environmentlists of items, numbered Synopsis: \begin{enumerate} \item item1 \item item2 ... \end{enumerate} The enumerate environment produces a numbered list. Enumerations can be nested within one another, up to four levels deep. They can also be nested within other paragraph-making environments, such as itemize (see itemize) and description (see description). \itemEach item of an enumerated list begins with an \item command. There must be at least one \item command within the environment. By default, the numbering at each level is done like this: 1., 2., &dots; (a), (b), &dots; i., ii., &dots; A., B., &dots; \enumi\enumii\enumiii\enumivThe enumerate environment uses the counters \enumi through \enumiv counters (see Counters). If the optional argument to \item is given, the counter is not incremented for that item. \labelenumi\labelenumii\labelenumiii\labelenumivThe enumerate environment uses the commands \labelenumi through \labelenumiv to produce the default label. So, you can use \renewcommand to change the labels (see \newcommand & \renewcommand). For instance, to have the first level use uppercase letters: \Alph example \renewcommand{\labelenumi}{\Alph{enumi}}

eqnarray equation enumerate Environments

eqnarray environmentequations, aligningaligning Equations \begin{eqnarray} (or eqnarray*) formula1 \\ formula2 \\ ... \end{eqnarray} \\ (for eqnarray)The eqnarray environment is used to display a sequence of equations or inequalities. It is very much like a three-column array environment, with consecutive rows separated by \\ and consecutive items within a row separated by an &. \\* (for eqnarray)\\* can also be used to separate equations, with its normal meaning of not allowing a page break at that line. \nonumberequation numbers, omittingAn equation number is placed on every line unless that line has a \nonumber command. Alternatively, The *-form of the environment (\begin{eqnarray*} ... \end{eqnarray*}) will omit equation numbering entirely, while otherwise being the same as eqnarray. \lefteqnThe command \lefteqn is used for splitting long formulas across lines. It typesets its argument in display style flush left in a box of zero width.

equation figure eqnarray Environments

equation environmentequations, environment forformulas, environment for Synopsis: \begin{equation} math \end{equation} The equation environment starts a displaymath environment (see displaymath), e.g., centering the math text on the page, and also places an equation number in the right margin.

figure flushleft equation Environments

figureinserting figuresfigures, inserting \begin{figure}[placement] figbody \label{label} \caption[loftitle]{text} \end{figure} Figures are objects that are not part of the normal text, and are instead “floated” to a convenient place, such as the top of a page. Figures will not be split between two pages. The optional argument [placement] determines where &latex; will try to place your figure. There are four places where &latex; can possibly put a float: h (Here) - at the position in the text where the figure environment appears. t (Top) - at the top of a text page. b (Bottom) - at the bottom of a text page. p (Page of floats) - on a separate float page, which is a page containing no text, only floats. The standard report and article classes use the default placement tbp. The body of the figure is made up of whatever text, &latex; commands, etc. you wish. \captionThe \caption command specifies caption text for the figure. The caption is numbered by default. If loftitle is present, it is used in the list of figures instead of text (see Tables of contents). \bottomfractionThe maximum fraction of the page allowed to be occuped by floats atthe bottom; default .3. \floatpagefraction\floatpagefraction The minimum fraction of a float page that must be occupied by floats; default .5. \floatsep\floatsep Space between floats at the top or bottom of a page; default 12pt plus2pt minus2pt. \intextsep\intextsep Space above and below a float in the middle of the main text; default 12pt plus2pt minus2pt for 10pt and 11pt styles, 14pt plus4pt minus4pt for 12pt. \textfloatsep\textfloatsep Space between the last (first) float at the top (bottom) of a page; default 20pt plus2pt minus4pt. \textfraction\textfraction Minimum fraction of a page that must be text; if floats take up too much space to preserve this much text, floats will be moved to a different page. The default is .2. \topfraction\topfraction Maximum fraction at the top of a page that may be occupied before floats; default is .7.

flushleft flushright figure Environments

flushleft environmentleft-justifying text, environment forragged right text, environment for \begin{flushleft} line1 \\ line2 \\ ... \end{flushleft} \\ for flushleftThe flushleft environment allows you to create a paragraph consisting of lines that are flush to the left-hand margin and ragged right Each line must be terminated with the string \\. \raggedright \raggedright Declaration form of the flushleft environment.

\raggedright flushleft \raggedrightragged right textleft-justifying textjustification, ragged right The \raggedright declaration corresponds to the flushleft environment. This declaration can be used inside an environment such as quote or in a parbox. Unlike the flushleft environment, the \raggedright command does not start a new paragraph; it only changes how &latex; formats paragraph units. To affect a paragraph unit's format, the scope of the declaration must contain the blank line or \end command that ends the paragraph unit. flushright itemize flushleft Environments

flushright environmentragged left text, environment forright-justifying text, environment for \begin{flushright} line1 \\ line2 \\ ... \end{flushright} \\ (for flushright)The flushright environment allows you to create a paragraph consisting of lines that are flush to the right-hand margin and ragged left. Each line must be terminated with the string \\. \raggedleft \raggedleft Declaration form of the flushright environment.

\raggedleft flushright \raggedleftragged left textjustification, ragged leftright-justifying text The \raggedleft declaration corresponds to the flushright environment. This declaration can be used inside an environment such as quote or in a parbox. Unlike the flushright environment, the \raggedleft command does not start a new paragraph; it only changes how &latex; formats paragraph units. To affect a paragraph unit's format, the scope of the declaration must contain the blank line or \end command that ends the paragraph unit. itemize letter flushright Environments

itemize environment\itemlists of itemsunordered listsbulleted lists Synopsis: \begin{itemize} \item item1 \item item2 ... \end{itemize} The itemize environment produces an “unordered”, “bulleted” list. Itemizations can be nested within one another, up to four levels deep. They can also be nested within other paragraph-making environments, such as enumerate (see enumerate). Each item of an itemize list begins with an \item command. There must be at least one \item command within the environment. By default, the marks at each level look like this: • -- (bold en-dash) * . (centered dot, rendered here as a period) \labelitemi\labelitemii\labelitemiii\labelitemivThe itemize environment uses the commands \labelitemi through \labelitemiv to produce the default label. So, you can use \renewcommand to change the labels. For instance, to have the first level use diamonds: \renewcommand{\labelitemi}{$\diamond$} \leftmargin\leftmargini\leftmarginii\leftmarginiii\leftmarginiv\leftmarginv\leftmarginviThe \leftmargini through \leftmarginvi parameters define the distance between the left margin of the enclosing environment and the left margin of the list. By convention, \leftmargin is set to the appropriate \leftmarginN when a new level of nesting is entered. The defaults vary from .5em (highest levels of nesting) to 2.5em (first level), and are a bit reduced in two-column mode. This example greatly reduces the margin space for outermost lists: \setlength{\leftmargini}{1.25em} % default 2.5em Some parameters that affect list formatting: \itemindent\itemindent Extra indentation before each item in a list; default zero. \labelsep\labelsep Space between the label and text of an item; default .5em. \labelwidth\labelwidth Width of the label; default 2em, or 1.5em in two-column mode. \listparindent\listparindent Extra indentation added to second and subsequent paragraphs within a list item; default 0pt. \rightmargin\rightmargin Horizontal distance between the right margin of the list and the enclosing environment; default 0pt, except in the quote, quotation, and verse environments, where it is set equal to \leftmargin. Parameters affecting vertical spacing between list items (rather loose, by default). \itemsep\itemsep Vertical space between items. The default is 2pt plus1pt minus1pt for 10pt documents, 3pt plus2pt minus1pt for 11pt, and 4.5pt plus2pt minus1pt for 12pt. \parsep\parsep Extra vertical space between paragraphs within a list item. Defaults are the same as \itemsep. \topsep\topsep Vertical space between the first item and the preceding paragraph. The default is 4pt plus2pt minus2pt for 10pt documents, 6pt plus2pt minus2pt for 11pt, and 9pt plus3pt minus5pt for 12pt. \partopsep\partopsep Extra space added to \topsep when the list environment starts a paragraph. The default is 2pt plus1pt minus1pt for 10pt documents, 3pt plus1pt minus1pt for 11pt, and 3pt plus2pt minus2pt for 12pt. \topsep\topsep Extra vertical space added before an initial and after a final list item. Its value is changed with list level and font size changes; for instance, within a first-level list at 10pt, it is 4pt plus2pt minus2pt. \parskip exampleEspecially for lists with short items, it may be desirable to elide space between items. Here is an example defining an itemize* environment with no extra spacing between items, or between paragraphs within a single item (\parskip is not list-specific, see \parskip): \newenvironment{itemize*}% {\begin{itemize}% \setlength{\itemsep}{0pt}% \setlength{\parsep}{0pt}}% \setlength{\parskip}{0pt}}% {\end{itemize}}

letter list itemize Environments

letter This environment is used for creating letters. See Letters.

list math letter Environments

listlists of items, generic The list environment is a generic environment which is used for defining many of the more specific environments. It is seldom used in documents, but often in macros. \begin{list}{labeling}{spacing} \item item1 \item item2 ... \end{list} The mandatory labeling argument specifies how items should be labelled (unless the optional argument is supplied to \item). This argument is a piece of text that is inserted in a box to form the label. It can and usually does contain other &latex; commands. The mandatory spacing argument contains commands to change the spacing parameters for the list. This argument will most often be empty, i.e., {}, which leaves the default spacing.

math minipage list Environments

math environmentin-line formulas Synopsis: \begin{math} math \end{math} The math environment inserts the given math within the running text. \(...\)) and $...$ are synonyms. See Math formulas.

minipage picture math Environments

minipage environmentminipage, creating a \begin{minipage}[position]{width} text \end{minipage} The minipage environment typesets its body text in a block that will not be broken across pages (similar to the \parbox command, see \parbox). You may use other paragraph-making environments inside a minipage (unlike \parbox). It takes an optional position argument for placing text, and a mandatory width argument for specifying the line width. indentation of paragraphs, in minipageparagraph indentation, in minipage\parindentBy default, paragraphs are not indented in the minipage environment. You can restore indentation with a command such as \setlength{\parindent}{1pc} command. footnotes in figuresfigures, footnotes inFootnotes in a minipage environment are handled in a way that is particularly useful for putting footnotes in figures or tables. A \footnote or \footnotetext command puts the footnote at the bottom of the minipage instead of at the bottom of the page, and it uses the \mpfootnote counter instead of the ordinary footnote counter (see Counters). However, don't put one minipage inside another if you are using footnotes; they may wind up at the bottom of the wrong minipage.

picture quotation minipage Environments

picturecreating picturespictures, creating \begin{picture}(width,height)(x offset,y offset) &dots; picture commands &dots; \end{picture} \unitlengthThe picture environment allows you to create just about any kind of picture you want containing text, lines, arrows and circles. You tell &latex; where to put things in the picture by specifying their coordinates. A coordinate is a number that may have a decimal point and a minus sign—a number like 5, 0.3 or -3.1416. A coordinate specifies a length in multiples of the unit length \unitlength, so if \unitlength has been set to 1cm, then the coordinate 2.54 specifies a length of 2.54 centimeters. You should only change the value of \unitlength, using the \setlength command, outside of a picture environment. A position is a pair of coordinates, such as (2.4,-5), specifying the point with x-coordinate 2.4 and y-coordinate -5. Coordinates are specified in the usual way with respect to an origin, which is normally at the lower-left corner of the picture. Note that when a position appears as an argument, it is not enclosed in braces; the parentheses serve to delimit the argument. The picture environment has one mandatory argument, which is a position. It specifies the size of the picture. The environment produces a rectangular box with width and height determined by this argument's x- and y-coordinates. The picture environment also has an optional position argument, following the size argument, that can change the origin. (Unlike ordinary optional arguments, this argument is not contained in square brackets.) The optional argument gives the coordinates of the point at the lower-left corner of the picture (thereby determining the origin). For example, if \unitlength has been set to 1mm, the command \begin{picture}(100,200)(10,20) produces a picture of width 100 millimeters and height 200 millimeters, whose lower-left corner is the point (10,20) and whose upper-right corner is therefore the point (110,220). When you first draw a picture, you will omit the optional argument, leaving the origin at the lower-left corner. If you then want to modify your picture by shifting everything, you just add the appropriate optional argument. The environment's mandatory argument determines the nominal size of the picture. This need bear no relation to how large the picture really is; &latex; will happily allow you to put things outside the picture, or even off the page. The picture's nominal size is used by &latex; in determining how much room to leave for it. Everything that appears in a picture is drawn by the \put command. The command \put (11.3,-.3){...} puts the object specified by ... in the picture, with its reference point at coordinates $(11.3,-.3)$. The reference points for various objects will be described below. lR boxThe \put command creates an LR box. You can put anything that can go in an \mbox (see \mbox) in the text argument of the \put command. When you do this, the reference point will be the lower left corner of the box. The picture commands are described in the following sections. \circle \circle Draw a circle. \makebox (picture) \makebox (picture) Draw a box of the specified size. \framebox (picture) \framebox (picture) Draw a box with a frame around it. \dashbox \dashbox Draw a dashed box. \frame \frame Draw a frame around an object. \line \line Draw a straight line. \linethickness \linethickness Set the line thickness. \thicklines \thicklines A heavier line thickness. \thinlines \thinlines The default line thickness. \multiput \multiput Draw multiple instances of an object. \oval \oval Draw an ellipse. \put \put Place an object at a specified place. \shortstack \shortstack Make a pile of objects. \vector \vector Draw a line with an arrow.

\circle \makebox (picture) picture \circle \circle[*]{diameter} The \circle command produces a circle with a diameter as close to the specified one as possible. The *-form of the command draws a solid circle. Circles up to 40 pt can be drawn. \makebox (picture) \framebox (picture) \circle picture \makebox (picture) \makebox(width,height)[position]{...} The \makebox command for the picture environment is similar to the normal \makebox command except that you must specify a width and height in multiples of \unitlength. The optional argument, [position], specifies the quadrant that your text appears in. You may select up to two of the following: • t - Moves the item to the top of the rectangle b - Moves the item to the bottom l - Moves the item to the left r - Moves the item to the right See \makebox. \framebox (picture) \dashbox \makebox (picture) picture \framebox Synopsis: \framebox(width,height)[pos]{...} The \framebox command is like \makebox (see previous section), except that it puts a frame around the outside of the box that it creates. \fboxrule\fboxsepThe \framebox command produces a rule of thickness \fboxrule, and leaves a space \fboxsep between the rule and the contents of the box. \dashbox \frame \framebox (picture) picture \dashbox Draws a box with a dashed line. Synopsis: \dashbox{dlen}(rwidth,rheight)[pos]{text} \dashbox creates a dashed rectangle around text in a picture environment. Dashes are dlen units long, and the rectangle has overall width rwidth and height rheight. The text is positioned at optional pos. A dashed box looks best when the rwidth and rheight are multiples of the dlen. \frame \line \dashbox picture \frame Synopsis: \frame{text} The \frame command puts a rectangular frame around text. The reference point is the bottom left corner of the frame. No extra space is put between the frame and the object. \line \linethickness \frame picture \line Synopsis: \line(xslope,yslope){length} The \line command draws a line with the given length and slope xslope/yslope. Standard &latex; can only draw lines with $$slope = x/y, where $x$ and $y$ have integer values from −6 through 6. For lines of any slope, not to mention other shapes, see the curve2e and many many other packages on CTAN. \linethickness \thicklines \line picture \linethickness The \linethickness{dim} command declares the thickness of horizontal and vertical lines in a picture environment to be dim, which must be a positive length. \linethickness does not affect the thickness of slanted lines, circles, or the quarter circles drawn by \oval. \thicklines \thinlines \linethickness picture \thicklines The \thicklines command is an alternate line thickness for horizontal and vertical lines in a picture environment; cf. \linethickness and \thinlines. \thinlines \multiput \thicklines picture \thinlines The \thinlines command is the default line thickness for horizontal and vertical lines in a picture environment; cf. \linethickness and \thicklines. \multiput \oval \thinlines picture \multiput Synopsis: \multiput(x,y)(delta_x,delta_y){n}{obj} The \multiput command copies the object obj in a regular pattern across a picture. obj is first placed at position $(x,y)$, then at $(x+\backslash delta\; x,y+\backslash delta\; y)$, and so on, n times. \oval \put \multiput picture \oval Synopsis: \oval(width,height)[portion] The \oval command produces a rectangle with rounded corners. The optional argument portion allows you to select part of the oval via the following: t selects the top portion; b selects the bottom portion; r selects the right portion; l selects the left portion. The “corners” of the oval are made with quarter circles with a maximum radius of 20pt, so large “ovals” will look more like boxes with rounded corners. \put \shortstack \oval picture \put \put(x coord,y coord){ ... } The \put command places the item specified by the mandatory argument at the given coordinates. \shortstack \vector \put picture \shortstack Synopsis: \shortstack[position]{...\\...\\...} The \shortstack command produces a stack of objects. The valid positions are: r Move the objects to the right of the stack. l Move the objects to the left of the stack c Move the objects to the centre of the stack (default) \\ (for \shortstack objects)Objects are separated with \\. \vector \shortstack picture \vector Synopsis: \vector(x-slope,y-slope){length} The \vector command draws a line with an arrow of the specified length and slope. The $x$ and $y$ values must lie between −4 and +4, inclusive. quotation quote picture Environments

quotationquoted text with paragraph indentation, displayingdisplaying quoted text with paragraph indentationparagraph indentations in quoted text Synopsis: \begin{quotation} text \end{quotation} The margins of the quotation environment are indented on both the left and the right. The text is justified at both margins. Leaving a blank line between text produces a new paragraph. Unlike the quote environment, each paragraph is indented normally.

quote tabbing quotation Environments

quotequoted text without paragraph indentation, displayingdisplaying quoted text without paragraph indentationparagraph indentations in quoted text, omitting Snyopsis: \begin{quote} text \end{quote} The margins of the quote environment are indented on both the left and the right. The text is justified at both margins. Leaving a blank line between text produces a new paragraph. Unlike the quotation environment, paragraphs are not indented.

tabbing table quote Environments

tabbing environmenttab stops, usinglining text up in columns using tab stopsalignment via tabbing Synopsis: \begin{tabbing} row1col1 \= row1col2 \= row1col3 \= row1col4 \\ row2col1 \> \> row2col3 \\ ... \end{tabbing} The tabbing environment provides a way to align text in columns. It works by setting tab stops and tabbing to them much as was done on an ordinary typewriter. It is best suited for cases where the width of each column is constant and known in advance. This environment can be broken across pages, unlike the tabular environment. The following commands can be used inside a tabbing enviroment: \\ tabbing\\ tabbing End a line. \= (tabbing)\= (tabbing) Sets a tab stop at the current position. \> (tabbing)\> (tabbing)\> Advances to the next tab stop. \<\< Put following text to the left of the local margin (without changing the margin). Can only be used at the start of the line. \+\+ Moves the left margin of the next and all the following commands one tab stop to the right, beginning tabbed line if necessary. \-\- Moves the left margin of the next and all the following commands one tab stop to the left, beginning tabbed line if necessary. \' (tabbing)\' (tabbing) Moves everything that you have typed so far in the current column, i.e. everything from the most recent \>, \<, \', \\, or \kill command, to the right of the previous column, flush against the current column's tab stop. \` (tabbing)\` (tabbing) Allows you to put text flush right against any tab stop, including tab stop 0. However, it can't move text to the right of the last column because there's no tab stop there. The \` command moves all the text that follows it, up to the \\ or \end{tabbing} command that ends the line, to the right margin of the tabbing environment. There must be no \> or \' command between the \` and the command that ends the line. \a (tabbing)\a (tabbing)\a' (acute accent in tabbing)\a` (grave accent in tabbing)\a= (macron accent in tabbing) In a tabbing environment, the commands \=, \' and \` do not produce accents as usual (see Accents). Instead, the commands \a=, \a' and \a` are used. \kill\kill Sets tab stops without producing text. Works just like \\ except that it throws away the current line instead of producing output for it. The effect of any \=, \+ or \- commands in that line remain in effect. \poptabs\poptabs\poptabs Restores the tab stop positions saved by the last \pushtabs. \pushtabs\pushtabs Saves all current tab stop positions. Useful for temporarily changing tab stop positions in the middle of a tabbing environment. \tabbingsep\tabbingsep Distance to left of tab stop moved by \'. This example typesets a Pascal function in a traditional format: \begin{tabbing} function \= fact(n : integer) : integer;\\ \> begin \= \+ \\ \> if \= n $>$ 1 then \+ \\ fact := n * fact(n-1) \- \\ else \+ \\ fact := 1; \-\- \\ end;\\ \end{tabbing}

table tabular tabbing Environments

tabletables, creatingcreating tables Synopsis: \begin{table}[placement] body of the table \caption{table title} \end{table} Tables are objects that are not part of the normal text, and are usually “floated” to a convenient place, like the top of a page. Tables will not be split between two pages. The optional argument [placement] determines where &latex; will try to place your table. There are four places where &latex; can possibly put a float: • h: Here - at the position in the text where the table environment appears. t: Top - at the top of a text page. b: Bottom - at the bottom of a text page. p: Page of floats - on a separate float page, which is a page containing no text, only floats. The standard report and article classes use the default placement [tbp]. The body of the table is made up of whatever text, &latex; commands, etc., you wish. The \caption command allows you to title your table.

tabular thebibliography table Environments

tabular environmentlines in tableslining text up in tables Synopsis: \begin{tabular}[pos]{cols} column 1 entry & column 2 entry ... & column n entry \\ ... \end{tabular} or \begin{tabular*}{width}[pos]{cols} column 1 entry & column 2 entry ... & column n entry \\ ... \end{tabular*} These environments produce a box consisting of a sequence of rows of items, aligned vertically in columns. \\ for tabular\\ must be used to specify the end of each row of the table, except for the last, where it is optional—unless an \hline command (to put a rule below the table) follows. The mandatory and optional arguments consist of: width Specifies the width of the tabular* environment. There must be rubber space between columns that can stretch to fill out the specified width. pos Specifies the vertical position; default is alignment on the centre of the environment. • t - align on top row b - align on bottom row cols Specifies the column formatting. It consists of a sequence of the following specifiers, corresponding to the sequence of columns and intercolumn material. • l - A column of left-aligned items. r - A column of right-aligned items. c - A column of centred items. | - A vertical line the full height and depth of the environment. @{text} - This inserts text in every row. An @-expression suppresses the intercolumn space normally inserted between columns; any desired space between the inserted text and the adjacent items must be included in text. An \extracolsep{wd} command in an @-expression causes an extra space of width wd to appear to the left of all subsequent columns, until countermanded by another \extracolsep command. Unlike ordinary intercolumn space, this extra space is not suppressed by an @-expression. An \extracolsep command can be used only in an @-expression in the cols argument. p{wd} - Produces a column with each item typeset in a parbox of width wd, as if it were the argument of a \parbox[t]{wd} command. However, a \\ may not appear in the item, except in the following situations: inside an environment like minipage, array, or tabular. inside an explicit \parbox. in the scope of a \centering, \raggedright, or \raggedleft declaration. The latter declarations must appear inside braces or an environment when used in a p-column element. *{num}{cols} - Equivalent to num copies of cols, where num is any positive integer and cols is any list of column-specifiers, which may contain another *-expression. Parameters that control formatting: \arrayrulewidth\arrayrulewidth Thickness of the rule created by |, \hline, and \vline in the tabular and array environments; the default is .4pt. \arraystretch\arraystretch Scaling of spacing between rows in the tabular and array environments; default is 1,for no scaling. \doublerulesep\doublerulesep Horizontal distance between the vertical rules produced by || in the tabular and array environments; default is 2pt. \tabcolsep\tabcolsep Half the width of the space between columns; default is 6pt. These commands can be used inside a tabular environment: \multicolumn \multicolumn Make an item spanning several columns. \cline \cline Draw a horizontal line spanning some columns. \hline \hline Draw a horizontal line spanning all columns. \vline \vline Draw a vertical line.

\multicolumn \cline tabular \multicolumn Synopsis: \multicolumn{cols}{pos}{text} The \multicolumn command makes an entry that spans several columns. The first mandatory argument, cols, specifies the number of columns to span. The second mandatory argument, pos, specifies the formatting of the entry; c for centered, l for flushleft, r for flushright. The third mandatory argument, text, specifies what text to put in the entry. Here's an example showing two columns separated by an en-dash; \multicolumn is used for the heading: \begin{tabular}{r@{--}l} \multicolumn{2}{c}{\bf Unicode}\cr 0x80&0x7FF \cr 0x800&0xFFFF \cr 0x10000&0x1FFFF \cr \end{tabular} \cline \hline \multicolumn tabular \cline Synopsis: \cline{i-j} The \cline command draws horizontal lines across the columns specified, beginning in column i and ending in column j, which are specified in the mandatory argument. \hline \vline \cline tabular \hline The \hline command draws a horizontal line the width of the enclosing tabular or array environment. It's most commonly used to draw a line at the top, bottom, and between the rows of a table. \vline \hline tabular \vline The \vline command will draw a vertical line extending the full height and depth of its row. An \hfill command can be used to move the line to the edge of the column. It can also be used in an @-expression. thebibliography theorem tabular Environments

thebibliographybibliography, creating (manually) Synopsis: \begin{thebibliography}{widest-label} \bibitem[label]{cite_key} ... \end{thebibliography} The thebibliography environment produces a bibliography or reference list. In the article class, this reference list is labelled “References”; in the report class, it is labelled “Bibliography”. You can change the label (in the standard classes) by redefining the command \refname. For instance, this eliminates it entirely: \renewcommand{\refname}{} The mandatory widest-label argument is text that, when typeset, is as wide as the widest item label produced by the \bibitem commands. It is typically given as 9 for bibliographies with less than 10 references, 99 for ones with less than 100, etc. \bibitem \bibitem Specify a bibliography item. \cite \cite Refer to a bibliography item. \nocite \nocite Include an item in the bibliography. Using BibTeX Using BibTeX Automatic generation of bibliographies.

\bibitem \cite thebibliography \bibitem Synopsis: \bibitem[label]{cite_key} The \bibitem command generates an entry labelled by label. If the label argument is missing, a number is automatically generated using the enumi counter. The cite_key is any sequence of letters, numbers, and punctuation symbols not containing a comma. This command writes an entry to the .aux file containing the item's cite_key and label. When the .aux file is read by the \begin{document} command, the item's label is associated with cite_key, causing references to cite_key with a \cite command (see next section) to produce the associated label. \cite \nocite \bibitem thebibliography \cite Synopsis: \cite[subcite]{keys The keys argument is a list of one or more citation keys, separated by commas. This command generates an in-text citation to the references associated with keys by entries in the .aux file. The text of the optional subcite argument appears after the citation. For example, \cite[p.~314]{knuth} might produce `[Knuth, p. 314]'. \nocite Using BibTeX \cite thebibliography \nocite \nocite{key_list} The \nocite command produces no text, but writes key_list, which is a list of one or more citation keys, on the .aux file. Using BibTeX \nocite thebibliography using Bib&tex;bib&tex;, usingbibliography, creating (automatically)\bibliographystyle\bibliography If you use the Bib&tex; program by Oren Patashnik (highly recommended if you need a bibliography of more than a couple of titles) to maintain your bibliography, you don't use the thebibliography environment (see thebibliography). Instead, you include the lines \bibliographystyle{bibstyle} \bibliography{bibfile1,bibfile2} The \bibliographystyle command does not produce any output of its own. Rather, it defines the style in which the bibliography will be produced: bibstyle refers to a file bibstyle.bst, which defines how your citations will look. The standard style names distributed with Bib&tex; are: alpha Sorted alphabetically. Labels are formed from name of author and year of publication. plain Sorted alphabetically. Labels are numeric. unsrt Like plain, but entries are in order of citation. abbrv Like plain, but more compact labels. In addition, numerous other Bib&tex; style files exist tailored to the demands of various publications. See http://www.ctan.org/tex-archive/biblio/bibtex/contrib. The \bibliography command is what actually produces the bibliography. The argument to \bibliography refers to files named bibfile.bib, which should contain your database in Bib&tex; format. Only the entries referred to via \cite and \nocite will be listed in the bibliography. theorem titlepage thebibliography Environments

theorem environmenttheorems, typesetting Synopsis: \begin{theorem} theorem-text \end{theorem} The theorem environment produces “Theorem n” in boldface followed by theorem-text, where the numbering possibilities for n are described under \newtheorem (see \newtheorem).

titlepage verbatim theorem Environments

titlepage environmentmaking a title pagetitle pages, creating Synopsis: \begin{titlepage} text \end{titlepage} The titlepage environment creates a title page, i.e., a page with no printed page number or heading. It also causes the following page to be numbered page one. Formatting the title page is left to you. The \today command may be useful on title pages (see \today). You can use the \maketitle command (see \maketitle) to produce a standard title page without a titlepage environment.

verbatim verse titlepage Environments

verbatim environmentverbatim textsimulating typed texttyped text, simulatingcode, typesettingcomputer programs, typesetting Synopsis: \begin{verbatim} literal-text \end{verbatim} The verbatim environment is a paragraph-making environment in which &latex; produces exactly what you type in; for instance the \ character produces a printed \. It turns &latex; into a typewriter with carriage returns and blanks having the same effect that they would on a typewriter. The verbatim uses a monospaced typewriter-like font (\tt). \verb \verb The macro form of the verbatim environment.

\verb verbatim \verbverbatim text, inline Synopsis: \verbcharliteral-textchar \verb*charliteral-textchar The \verb command typesets literal-text as it is input, including special characters and spaces, using the typewriter (\tt) font. No spaces are allowed between \verb or \verb* and the delimiter char, which begins and ends the verbatim text. The delimiter must not appear in literal-text. visible spaceThe *-form differs only in that spaces are printed with a “visible space” character. verse verbatim Environments

verse environmentpoetry, an environment for Synopsis: \begin{verse} line1 \\ line2 \\ ... \end{verse} The verse environment is designed for poetry, though you may find other uses for it. \\ for verseThe margins are indented on the left and the right, paragraphs are not indented, and the text is not justified. Separate the lines of each stanza with \\, and use one or more blank lines to separate the stanzas.

Footnotes Definitions Page breaking Top footnotes, creating Footnotes can be produced in one of two ways. They can be produced with one command, the \footnote command. They can also be produced with two commands, the \footnotemark and the \footnotetext commands. \footnote \footnote Insert a footnote. \footnotemark \footnotemark Insert footnote mark only. \footnotetext \footnotetext Insert footnote text only. Footnote parameters Footnote parameters Parameters for footnote formatting. \footnote \footnotemark Footnotes

\footnote Synopsis: \footnote[number]{text} The \footnote command places the numbered footnote text at the bottom of the current page. The optional argument number changes the default footnote number. This command can only be used in outer paragraph mode; i.e., you cannot use it in sectioning commands like \chapter, in figures, tables or in a tabular environment. (See following sections.)

\footnotemark \footnotetext \footnote Footnotes

\footnotemark With no optional argument, the \footnotemark command puts the current footnote number in the text. This command can be used in inner paragraph mode. You give the text of the footnote separately, with the \footnotetext command. This command can be used to produce several consecutive footnote markers referring to the same footnote with \footnotemark[\value{footnote}] after the first \footnote command.

\footnotetext Footnote parameters \footnotemark Footnotes

\footnotetext Synopsis: \footnotetext[number]{text} The \footnotetext command places text at the bottom of the page as a footnote. This command can come anywhere after the \footnotemark command. The \footnotetext command must appear in outer paragraph mode. The optional argument number changes the default footnote number.

Footnote parameters \footnotetext Footnotes

footnote parameters \footnoterule\footnoterule Produces the rule separating the main text on a page from the page's footnotes. Default dimensions: 0.4pt thick (or wide), and 0.4\columnwidth long in the standard document classes (except slides, where it does not appear). \footnotesep\footnotesep The height of the strut placed at the beginning of the footnote. By default, this is set to the normal strut for \footnotesize fonts (see Font sizes), therefore there is no extra space between footnotes. This is 6.65pt for 10pt, 7.7pt for 11pt, and 8.4pt for 12pt.

Definitions Counters Footnotes Top definitions &latex; has support for making new commands of many different kinds. \newcommand & \renewcommand \newcommand & \renewcommand (Re)define a new command. \newcounter \newcounter Define a new counter. \newlength \newlength Define a new length. \newsavebox \newsavebox Define a new box. \newenvironment & \renewenvironment \newenvironment & \renewenvironment Define a new environment. \newtheorem \newtheorem Define a new theorem-like environment. \newfont \newfont Define a new font name. \protect \protect Using tricky commands. \newcommand & \renewcommand \newcounter Definitions

\newcommandcommands, defining new onesdefining a new commandnew commands, defining \newcommand and \renewcommand define and redefine a command, respectively. Synopses: \newcommand{cmd}[nargs]{defn} \renewcommand{cmd}[nargs]{defn} \newcommand{cmd}[nargs][default]{defn} \renewcommand{cmd}[nargs][default]{defn} cmd The command name beginning with \. For \newcommand, it must not be already defined and must not begin with \end; for \renewcommand, it must already be defined. nargs An optional integer from 1 to 9 specifying the number of arguments that the command will take. The default is for the command to have no arguments. default If this optional parameter is present, it means that the command's first argument is optional. When the new command is called, the default value of the optional argument (i.e., if it is not specified in the call) is the string def. defn The text to be substituted for every occurrence of cmd; a construct of the form #n in defn is replaced by the text of the nth argument.

\newcounter \newlength \newcommand & \renewcommand Definitions

\newcountercounters, defining new Synopsis: \newcounter{cnt}[countername] The \newcounter command defines a new counter named cnt. The new counter is initialized to zero. Given the optional argument [countername], cnt will be reset whenever countername is incremented. See Counters, for more information about counters.

\newlength \newsavebox \newcounter Definitions

\newlengthlengths, defining new Synopsis: \newlength{\arg} The \newlength command defines the mandatory argument as a length command with a value of 0in. The argument must be a control sequence, as in \newlength{\foo}. An error occurs if \foo is already defined. See Lengths, for how to set the new length to a nonzero value, and for more information about lengths in general.

\newsavebox \newenvironment & \renewenvironment \newlength Definitions

\newsavebox Synopsis: \newsavebox{cmd} Defines \cmd, which must be a command name not already defined, to refer to a new bin for storing boxes.

\newenvironment & \renewenvironment \newtheorem \newsavebox Definitions

\newenvironment\renewenvironmentenvironments, definingdefining new environmentsredefining environments Synopses: \newenvironment{env}[nargs]{begdef}{enddef} \newenvironment{env}[nargs][default]{begdef}{enddef} \renewenvironment{env}[nargs]{begdef}{enddef} These commands define or redefine an environment env, that is, \begin{env} &dots; \end{env}. env The name of the environment. For \newenvironment, env must not be an existing environment, and the command \env must be undefined. For \renewenvironment, env must be the name of an existing environment. nargs An integer from 1 to 9 denoting the number of arguments of the newly-defined environment. The default is no arguments. default If this is specified, the first argument is optional, and default gives the default value for that argument. begdef The text expanded at every occurrence of \begin{env}; a construct of the form #n in begdef is replaced by the text of the nth argument. enddef The text expanded at every occurrence of \end{env}. It may not contain any argument parameters.

\newtheorem \newfont \newenvironment & \renewenvironment Definitions

\newtheoremtheorems, definingdefining new theorems \newtheorem{newenv}{label}[within] \newtheorem{newenv}[numbered_like]{label} This command defines a theorem-like environment. Arguments: newenv The name of the environment to be defined; must not be the name of an existing environment or otherwise defined. label The text printed at the beginning of the environment, before the number. For example, Theorem. numbered_like (Optional.) The name of an already defined theorem-like environment; the new environment will be numbered just like numbered_like. within (Optional.) The name of an already defined counter, a sectional unit. The new theorem counter will be reset at the same time as the within counter. At most one of numbered_like and within can be specified, not both.

\newfont \protect \newtheorem Definitions

\newfontfonts, new commands fordefining new fonts Synopsis: \newfont{cmd}{fontname} Defines a control sequence \cmd, which must not already be defined, to make fontname be the current font. The file looked for on the system is named fontname.tfm. This is a low-level command for setting up to use an individual font. More commonly, fonts are defined in families through .fd files.

\protect \newfont Definitions

\protect fragile commandsmoving argumentsFootnotes, line breaks, any command that has an optional argument, and many more are so-called fragile commands. When a fragile command is used in certain contexts, called moving arguments, it must be preceded by \protect. In addition, any fragile commands within the arguments must have their own \protect. Some examples of moving arguments are \caption (see figure), \thanks (see \maketitle), and expressions in tabular and array environments (see tabular). robust commandsCommands which are not fragile are called robust. They must not be preceded by \protect. See also: http://www-h.eng.cam.ac.uk/help/tpl/textprocessing/teTeX/latex/latex2e-html/fragile.html http://www.tex.ac.uk/cgi-bin/texfaq2html?label=protect

Counters Lengths Definitions Top counters, a list ofvariables, a list of Everything &latex; numbers for you has a counter associated with it. The name of the counter is the same as the name of the environment or command that produces the number, except with no \. (enumi–enumiv are used for the nested enumerate environment.) Below is a list of the counters used in &latex;'s standard document classes to control numbering. part paragraph figure enumi chapter subparagraph table enumii section page footnote enumiii subsection equation mpfootnote enumiv subsubsection \alph \Alph \arabic \roman \Roman \fnsymbol \alph \Alph \arabic \roman \Roman \fnsymbol Print value of a counter. \usecounter \usecounter Use a specified counter in a list environment. \value \value Use the value of a counter in an expression. \setcounter \setcounter Set the value of a counter. \addtocounter \addtocounter Add a quantity to a counter. \refstepcounter \refstepcounter Add to counter, resetting subsidiary counters. \stepcounter \stepcounter Add to counter, resetting subsidiary counters. \day \month \year \day \month \year Numeric date values. \alph \Alph \arabic \roman \Roman \fnsymbol \usecounter Counters

All of these commands take a single counter as an argument, for instance, \alph{enumi}. \alph\alph prints counter using lowercase letters: `a', `b', &enddots; \Alph\Alph uses uppercase letters: `A', `B', &enddots; \arabic\arabic uses Arabic numbers: `1', `2', &enddots; \roman\roman uses lowercase roman numerals: `i', `ii', &enddots; \roman\roman uses uppercase roman numerals: `I', `II', &enddots; \fnsymbol\fnsymbol prints the value of counter in a specific sequence of nine symbols (conventionally used for labeling footnotes). The value of counter must be between 1 and 9, inclusive. The symbols mostly aren't supported in Info, but here are the names: asterix(*) dagger ddagger section-sign paragraph-sign parallel double-asterix(**) double-dagger double-ddagger

\usecounter \value \alph \Alph \arabic \roman \Roman \fnsymbol Counters

\usecounterlist items, specifying counternumbered items, specifying counter Synopsis: \usecounter{counter} The \usecounter command is used in the second argument of the list environment to specify counter to be used to number the list items.

\value \setcounter \usecounter Counters

\valuecounters, getting value of Synopsis: \value{counter} The \value command produces the value of counter. It can be used anywhere &latex; expects a number, for example: \setcounter{myctr}{3} \addtocounter{myctr}{1} \hspace{\value{myctr}\parindent}

\setcounter \addtocounter \value Counters

\setcountercounters, settingsetting counters Synopsis: \setcounter{\counter}{value} The \setcounter command sets the value of \counter to the value argument.

\addtocounter \refstepcounter \setcounter Counters

\addtocounter The \addtocounter command increments counter by the amount specified by the value argument, which may be negative.

\refstepcounter \stepcounter \addtocounter Counters

\refstepcounter The \refstepcounter command works in the same way as \stepcounter See \stepcounter, except it also defines the current \ref value to be the result of \thecounter.

\stepcounter \day \month \year \refstepcounter Counters

\stepcounter The \stepcounter command adds one to counter and resets all subsidiary counters.

\day \month \year \stepcounter Counters

\day\month\year &latex; defines counters for the day of the month (\day, 1–31), month of the year (\month, 1–12), and year (\year, Common Era). When &tex; starts up, they are set to the current values on the system where &tex; is running. They are not updated as the job progresses. The related command \today produces a string representing the current day (see \today).

Lengths Making paragraphs Counters Top lengths, defining and using A length is a measure of distance. Many &latex; commands take a length as an argument. \setlength \setlength Set the value of a length. \addtolength \addtolength Add a quantity to a length. \settodepth \settodepth Set a length to the depth of something. \settoheight \settoheight Set a length to the height of something. \settowidth \settowidth Set a length to the width of something. Predefined lengths Predefined lengths Lengths that are, like, predefined. \setlength \addtolength Lengths

\setlengthlengths, setting The \setlength sets the value of \len to the value argument, which can be expressed in any units that &latex; understands, i.e., inches (in), millimeters (mm), points (pt), big points (bp, etc.

\addtolength \settodepth \setlength Lengths

\addtolengthlengths, adding to The \addtolength command increments a “length command” \len by the amount specified in the amount argument, which may be negative.

\settodepth \settoheight \addtolength Lengths

\settodepth \settodepth{\gnat}{text} The \settodepth command sets the value of a length command equal to the depth of the text argument.

\settoheight \settowidth \settodepth Lengths

\settoheight \settoheight{\gnat}{text} The \settoheight command sets the value of a length command equal to the height of the text argument.

\settowidth Predefined lengths \settoheight Lengths

\settowidth The \settowidth command sets the value of the command \len to the width of the text argument.

Predefined lengths \settowidth Lengths

lengths, predefinedpredefined lengths \width \width \height \height \depth \depth \totalheight \totalheight These length parameters can be used in the arguments of the box-making commands (see Boxes). They specify the natural width etc. of the text in the box. \totalheight equals \height + \depth. To make a box with the text stretched to double the natural size, e.g., say \makebox[2\width]{Get a stretcher}

Line breaking Page breaking Environments Top line breakingbreaking lines The first thing &latex; does when processing ordinary text is to translate your input file into a sequence of glyphs and spaces. To produce a printed document, this sequence must be broken into lines (and these lines must be broken into pages). &latex; usually does the line (and page) breaking for you, but in some environments, you do the line breaking yourself with the \\ command, and you can always manually force breaks. \\ \\ Start a new line. \obeycr & \restorecr \obeycr & \restorecr Make each input line start a new output line. \newline \newline Break the line \- (hyphenation) \- (hyphenation) Insert explicit hyphenation. \fussy \fussy Be fussy about line breaking. \hyphenation \hyphenation Tell &latex; how to hyphenate a word. \linebreak & \nolinebreak \linebreak & \nolinebreak Forcing & avoiding line breaks. \sloppy \sloppy Be sloppy about line breaking. \\ \obeycr & \restorecr Line breaking

\\ force line breaknew line, startingline break, forcing The \\ command tells &latex; to start a new line. It has an optional argument, morespace, that specifies how much extra vertical space is to be inserted before the next line. This can be a negative amount. The \\* command is the same as the ordinary \\ command except that it tells &latex; not to start a new page after the line.

\obeycr & \restorecr \newline \\ Line breaking

\obeycr\restorecrnew line, output as input The \obeycr command makes a return in the input file (^^M, internally) the same as \\ (followed by \relax). So each new line in the input will also be a new line in the output. \restorecr restores normal line-breaking behavior.

\newline \- (hyphenation) \obeycr & \restorecr Line breaking

\newlinenew line, starting (paragraph mode) The \newline command breaks the line at the present point, with no stretching of the text before it. It can only be used in paragraph mode.

\- (hyphenation) \fussy \newline Line breaking

\- (hyphenation)hyphenation, forcing The \- command tells &latex; that it may hyphenate the word at that point. &latex; is very good at hyphenating, and it will usually find most of the correct hyphenation points, and almost never use an incorrect one. The \- command is used for the exceptional cases. When you insert \- commands in a word, the word will only be hyphenated at those points and not at any of the hyphenation points that &latex; might otherwise have chosen.

\fussy \hyphenation \- (hyphenation) Line breaking

\fussy The declaration \fussy (which is the default) makes &tex; picky about line breaking. This usually avoids too much space between words, at the cost of an occasional overfull box. This command cancels the effect of a previous \sloppy command (see \sloppy.

\sloppy \linebreak & \nolinebreak Line breaking

The declaration \sloppy makes &tex; less fussy about line breaking. This will avoid overfull boxes, at the cost of loose interword spacing. Lasts until a \fussy command is issued (see \fussy).

\hyphenation \linebreak & \nolinebreak \fussy Line breaking

\hyphenationhyphenation, defining Synopsis: \hyphenation{word-one word-two} The \hyphenation command declares allowed hyphenation points with a - character in the given words. The words are separated by spaces. &tex; will only hyphenate if the word matches exactly, no inflections are tried. Multiple \hyphenation commands accumulate. Some examples (the default &tex; hyphenation patterns misses the hyphenations in these words): \hyphenation{ap-pen-dix col-umns data-base data-bases}

\linebreak & \nolinebreak \sloppy \hyphenation Line breaking

\linebreak\nolinebreakline breaks, forcingline breaks, preventing Synopses: \linebreak[priority] \nolinebreak[priority] By default, the \linebreak (\nolinebreak) command forces (prevents) a line break at the current position. For \linebreak, the spaces in the line are stretched out so that it extends to the right margin as usual. With the optional argument priority, you can convert the command from a demand to a request. The priority must be a number from 0 to 4. The higher the number, the more insistent the request.

Page breaking Footnotes Line breaking Top page breakingbreaking pages &latex; starts new pages asynchronously, when enough material has accumulated to fill up a page. Usually this happens automatically, but sometimes you may want to influence the breaks. \cleardoublepage \cleardoublepage Start a new right-hand page. \clearpage \clearpage Start a new page. \newpage \newpage Start a new page. \enlargethispage \enlargethispage Enlarge the current page a bit. \pagebreak & \nopagebreak \pagebreak & \nopagebreak Forcing & avoiding page breaks. \cleardoublepage \clearpage Page breaking

\cleardoublepagestarting on a right-hand page The \cleardoublepage command ends the current page and causes all figures and tables that have so far appeared in the input to be printed. In a two-sided printing style, it also makes the next page a right-hand (odd-numbered) page, producing a blank page if necessary.

\clearpage \newpage \cleardoublepage Page breaking

\clearpageflushing floats and starting a pagestarting a new page and clearing floats The \clearpage command ends the current page and causes all figures and tables that have so far appeared in the input to be printed.

\newpage \enlargethispage \clearpage Page breaking

\newpagenew page, startingstarting a new page The \newpage command ends the current page, but does not clear floats (see \clearpage above).

\enlargethispage \pagebreak & \nopagebreak \newpage Page breaking

\enlargethispageenlarge current page \enlargethispage{size} \enlargethispage*{size} Enlarge the \textheight for the current page by the specified amount; e.g. \enlargethispage{\baselineskip} will allow one additional line. The starred form tries to squeeze the material together on the page as much as possible. This is normally used together with an explicit \pagebreak.

\pagebreak & \nopagebreak \enlargethispage Page breaking

\pagebreak\nopagebreakpage break, forcingpage break, preventing Synopses: \pagebreak[priority] \nopagebreak[priority] By default, the \pagebreak (\nopagebreak) command forces (prevents) a page break at the current position. For \linebreak, the vertical space on the page is stretched out where possible so that it extends to the normal bottom margin. With the optional argument priority, you can convert the \pagebreak command from a demand to a request. The number must be a number from 0 to 4. The higher the number, the more insistent the request is.

Making paragraphs Math formulas Lengths Top making paragraphsparagraphs A paragraph is ended by one or more completely blank lines—lines not containing even a %. A blank line should not appear where a new paragraph cannot be started, such as in math mode or in the argument of a sectioning command. \indent \indent Indent this paragraph. \noindent \noindent Do not indent this paragraph. \parskip \parskip Space added before paragraphs. Marginal notes Marginal notes Putting remarks in the margin. \indent \noindent Making paragraphs

\indent\parindentindent, forcing \indent produces a horizontal space whose width equals the width of the \parindent length, the normal paragraph indentation. It is used to add paragraph indentation where it would otherwise be suppressed. The default value for \parindent is 1em in two-column mode, otherwise 15pt for 10pt documents, 17pt for 11pt, and 1.5em for 12pt.

\noindent \parskip \indent Making paragraphs

\noindentindent, suppressing When used at the beginning of the paragraph, \noindent suppresses any paragraph indentation. It has no effect when used in the middle of a paragraph.

\parskip Marginal notes \noindent Making paragraphs

\parskipvertical space before paragraphs \parskip is a rubber length defining extra vertical space added before each paragraph. The default is 0pt plus1pt.

Marginal notes \parskip Making paragraphs

marginal notesnotes in the marginremarks in the margin\marginpar Synopsis: \marginpar[left]{right} The \marginpar command creates a note in the margin. The first line of the note will have the same baseline as the line in the text where the \marginpar occurs. When you only specify the mandatory argument right, the text will be placed • in the right margin for one-sided layout; in the outside margin for two-sided layout; in the nearest margin for two-column layout. \reversemarginpar\normalmarginparThe command \reversemarginpar places subsequent marginal notes in the opposite (inside) margin. \normalmarginpar places them in the default position. When you specify both arguments, left is used for the left margin, and right is used for the right margin. The first word will normally not be hyphenated; you can enable hyphenation there by beginning the node with \hspace{0pt}. These parameters affect the formatting of the note: \marginparpush\marginparpush Minimum vertical space between notes; default 7pt for 12pt documents, 5pt else. \marginparsep\marginparsep Horizontal space between the main text and the note; default 11pt for 10pt documents, 10pt else. \marginparwidth\marginparwidth Width of the note itself; default for a one-sided 10pt document is 90pt, 83pt for 11pt, and 68pt for 12pt; 17pt more in each case for a two-sided document. In two column mode, the default is 48pt.

Math formulas Modes Making paragraphs Top math formulasformulas, mathmath mode, entering math environmentdisplaymath environmentequation environmentThere are three environments that put &latex; in math mode: math For formulas that appear right in the text. displaymath For formulas that appear on their own line. equation The same as the displaymath environment except that it adds an equation number in the right margin. \(\)\[\]The math environment can be used in both paragraph and LR mode, but the displaymath and equation environments can be used only in paragraph mode. The math and displaymath environments are used so often that they have the following short forms: \(...\) instead of \begin{math}...\end{math} \[...\] instead of \begin{displaymath}...\end{displaymath} $In fact, the math environment is so common that it has an even shorter form: $ ... $ instead of \(...\) \boldmath\unboldmathThe \boldmath command changes math letters and symbols to be in a bold font. It is used outside of math mode. Conversely, the \unboldmath command changes math glyphs to be in a normal font; it too is used outside of math mode. \displaystyleThe \displaystyle declaration forces the size and style of the formula to be that of displaymath, e.g., with limits above and below summations. For example $\displaystyle \sum_{n=0}^\infty x_n $ Subscripts & Superscripts Subscripts & Superscripts Also known as exponent or index. Math symbols Math symbols Various mathematical squiggles. Math functions Math functions Math function names like sin and exp. Math accents Math accents Accents in math. Spacing in math mode Spacing in math mode Thick, medium, thin and negative spaces. Math Miscellany Math Miscellany Stuff that doesn't fit anywhere else. Subscripts & Superscripts Math symbols Math formulas

superscriptsubscriptexponent_^ To get an expression exp to appear as a subscript, you just type _{exp}. To get exp to appear as a superscript, you type ^{exp}. &latex; handles superscripted superscripts and all of that stuff in the natural way. It even does the right thing when something has both a subscript and a superscript.

Math symbols Math functions Subscripts & Superscripts Math formulas

math symbolssymbols, mathgreek letters &latex; provides almost any mathematical symbol you're likely to need. The commands for generating them can be used only in math mode. For example, if you include $\pi$ in your source, you will get the pi symbol ($\backslash pi$) in your output. \|\| $\backslash |$ \aleph\aleph $\backslash aleph$ \alpha\alpha $\backslash alpha$ \amalg\amalg $\backslash amalg$ (binary operation) \angle\angle $\backslash angle$ \approx\approx $\backslash approx$ (relation) \ast\ast $\backslash ast$ (binary operation) \asymp\asymp $\backslash asymp$ (relation) \backslash\backslash \ (delimiter) \beta\beta $\backslash beta$ \bigcap\bigcap $\backslash bigcap$ \bigcirc\bigcirc $\backslash bigcirc$ (binary operation) \bigcup\bigcup $\backslash bigcup$ \bigodot\bigodot $\backslash bigodot$ \bigoplus\bigoplus $\backslash bigoplus$ \bigotimes\bigotimes $\backslash bigotimes$ \bigtriangledown\bigtriangledown $\backslash bigtriangledown$ (binary operation) \bigtriangleup\bigtriangleup $\backslash bigtriangleup$ (binary operation) \bigsqcup\bigsqcup $\backslash bigsqcup$ \biguplus\biguplus $\backslash biguplus$ \bigcap\bigcap $\backslash bigvee$ \bigwedge\bigwedge $\backslash bigwedge$ \bot\bot $\backslash bot$ \bowtie\bowtie $\backslash bowtie$ (relation) \Box\Box (square open box symbol) \bullet\bulletbullet symbol $\backslash bullet$ (binary operation) \cap\cap $\backslash cap$ (binary operation) \cdot\cdot $\backslash cdot$ (binary operation) \chi\chi $\backslash chi$ \circ\circ $\backslash circ$ (binary operation) \clubsuit\clubsuit $\backslash clubsuit$ \cong\cong $\backslash cong$ (relation) \coprod\coprod $\backslash coprod$ \cup\cup $\backslash cup$ (binary operation) \dagger\dagger $\backslash dagger$ (binary operation) \dashv\dashv $\backslash dashv$ (relation) \ddagger\ddagger $\backslash dagger$ (binary operation) \Delta\Delta $\backslash Delta$ \delta\delta $\backslash delta$ \Diamond\Diamond bigger $\backslash diamond$ \diamond\diamond $\backslash diamond$ (binary operation) \diamondsuit\diamondsuit $\backslash diamondsuit$ \div\div $\backslash div$ (binary operation) \doteq\doteq $\backslash doteq$ (relation) \downarrow\downarrow $\backslash downarrow$ (delimiter) \Downarrow\Downarrow $\backslash Downarrow$ (delimiter) \ell\ell $\backslash ell$ \emptyset\emptyset $\backslash emptyset$ \epsilon\epsilon $\backslash epsilon$ \equiv\equiv $\backslash equiv$ (relation) \eta\eta $\backslash eta$ \exists\exists $\backslash exists$ \flat\flat $\backslash flat$ \forall\forall $\backslash forall$ \frown\frown $\backslash frown$ (relation) \Gamma\Gamma $\backslash Gamma$ \gamma\gamma $\backslash gamma$ \ge\ge $\backslash ge$ \geq\geq $\backslash geq$ (relation) \gets\gets $\backslash gets$ \gg\gg $\backslash gg$ (relation) \hbar\hbar $\backslash hbar$ \heartsuit\heartsuit $\backslash heartsuit$ \hookleftarrow\hookleftarrow $\backslash hookleftarrow$ \hookrightarrow\hookrightarrow $\backslash hookrightarrow$ \iff\iff $\backslash iff$ \Im\Im $\backslash Im$ \in\in $\backslash in$ (relation) \infty\infty $\backslash infty$ \int\int $\backslash int$ \iota\iota $\backslash iota$ \Join\Join condensed bowtie symbol (relation) \kappa\kappa $\backslash kappa$ \Lambda\Lambda $\backslash Lambda$ \lambda\lambda $\backslash lambda$ \land\land $\backslash land$ \langle\langle $\backslash langle$ (delimiter) \lbrace\lbrace $\backslash lbrace$ (delimiter) \lbrack\lbrack $\backslash lbrack$ (delimiter) \lceil\lceil $\backslash lceil$ (delimiter) \le\le $\backslash le$ \leadsto\leadsto \Leftarrow\Leftarrow $\backslash Leftarrow$ \leftarrow\leftarrow $\backslash leftarrow$ \leftharpoondown\leftharpoondown $\backslash leftharpoondown$ \leftharpoonup\leftharpoonup $\backslash leftharpoonup$ \Leftrightarrow\Leftrightarrow $\backslash Leftrightarrow$ \leftrightarrow\leftrightarrow $\backslash leftrightarrow$ \leq\leq $\backslash leq$ (relation) \lfloor\lfloor $\backslash lfloor$ (delimiter) \lhd\lhd (left-pointing arrow head) \ll\ll $\backslash ll$ (relation) \lnot\lnot $\backslash lnot$ \longleftarrow\longleftarrow $\backslash longleftarrow$ \longleftrightarrow\longleftrightarrow $\backslash longleftrightarrow$ \longmapsto\longmapsto $\backslash longmapsto$ \longrightarrow\longrightarrow $\backslash longrightarrow$ \lor\lor $\backslash lor$ \mapsto\mapsto $\backslash mapsto$ \mho\mho \mid\mid $\backslash mid$ (relation) \models\models $\backslash models$ (relation) \mp\mp $\backslash mp$ (binary operation) \mu\mu $\backslash mu$ \nabla\nabla $\backslash nabla$ \natural\natural $\backslash natural$ \ne\ne $\backslash ne$ \nearrow\nearrow $\backslash nearrow$ \neg\neg $\backslash neg$ \neq\neq $\backslash neq$ (relation) \ni\ni $\backslash ni$ (relation) \not\not Overstrike a following operator with a /, as in $\backslash not=$. \notin\notin $\backslash ni$ \nu\nu $\backslash nu$ \nwarrow\nwarrow $\backslash nwarrow$ \odot\odot $\backslash odot$ (binary operation) \oint\oint $\backslash oint$ \Omega\Omega $\backslash Omega$ \omega\omega $\backslash omega$ \ominus\ominus $\backslash ominus$ (binary operation) \oplus\oplus $\backslash oplus$ (binary operation) \oslash\oslash $\backslash oslash$ (binary operation) \otimes\otimes $\backslash otimes$ (binary operation) \owns\owns $\backslash owns$ \parallel\parallel $\backslash parallel$ (relation) \partial\partial $\backslash partial$ \perp\perp $\backslash perp$ (relation) \phi\phi $\backslash phi$ \Pi\Pi $\backslash Pi$ \pi\pi $\backslash pi$ \pm\pm $\backslash pm$ (binary operation) \prec\prec $\backslash prec$ (relation) \preceq\preceq $\backslash preceq$ (relation) \prime\prime $\backslash prime$ \prod\prod $\backslash prod$ \propto\propto $\backslash propto$ (relation) \Psi\Psi $\backslash Psi$ \psi\psi $\backslash psi$ \rangle\rangle $\backslash rangle$ (delimiter) \rbrace\rbrace $\backslash rbrace$ (delimiter) \rbrack\rbrack $\backslash rbrack$ (delimiter) \rceil\rceil $\backslash rceil$ (delimiter) \Re\Re $\backslash Re$ \rfloor\rfloor $\backslash rfloor$ \rhd\rhd (binary operation) \rho\rho $\backslash rho$ \Rightarrow\Rightarrow $\backslash Rightarrow$ \rightarrow\rightarrow $\backslash rightarrow$ \rightharpoondown\rightharpoondown $\backslash rightharpoondown$ \rightharpoonup\rightharpoonup $\backslash rightharpoonup$ \rightleftharpoons\rightleftharpoons $\backslash rightleftharpoons$ \searrow\searrow $\backslash searrow$ \setminus\setminus $\backslash setminus$ (binary operation) \sharp\sharp $\backslash sharp$ \Sigma\Sigma $\backslash Sigma$ \sigma\sigma $\backslash sigma$ \sim\sim $\backslash sim$ (relation) \simeq\simeq $\backslash simeq$ (relation) \smallint\smallint $\backslash smallint$ \smile\smile $\backslash smile$ (relation) \spadesuit\spadesuit $\backslash spadesuit$ \sqcap\sqcap $\backslash sqcap$ (binary operation) \sqcup\sqcup $\backslash sqcup$ (binary operation) \sqsubset\sqsubset (relation) \sqsubseteq\sqsubseteq $\backslash sqsubseteq$ (relation) \sqsupset\sqsupset (relation) \sqsupseteq\sqsupseteq $\backslash sqsupseteq$ (relation) \star\star $\backslash star$ (binary operation) \subset\subset $\backslash subset$ (relation) \subseteq\subseteq $\backslash subseteq$ (relation) \succ\succ $\backslash succ$ (relation) \succeq\succeq $\backslash succeq$ (relation) \sum\sum $\backslash sum$ \supset\supset $\backslash supset$ (relation) \supseteq\supseteq $\backslash supseteq$ (relation) \surd\surd $\backslash surd$ \swarrow\swarrow $\backslash swarrow$ \tau\tau $\backslash tau$ \theta\theta $\backslash theta$ \times\times $\backslash times$ (binary operation) \to\to $\backslash to$ \top\top $\backslash top$ \triangle\triangle $\backslash triangle$ \triangleleft\triangleleft $\backslash triangleleft$ (binary operation) \triangleright\triangleright $\backslash triangleright$ (binary operation) \unlhd\unlhd left-pointing arrowhead with line under (binary operation) \unrhd\unrhd right-pointing arrowhead with line under (binary operation) \Uparrow\Uparrow $\backslash Uparrow$ (delimiter) \uparrow\uparrow $\backslash uparrow$ (delimiter) \Updownarrow\Updownarrow $\backslash Updownarrow$ (delimiter) \updownarrow\updownarrow $\backslash updownarrow$ (delimiter) \uplus\uplus $\backslash uplus$ (binary operation) \Upsilon\Upsilon $\backslash Upsilon$ \upsilon\upsilon $\backslash upsilon$ \varepsilon\varepsilon $\backslash varepsilon$ \varphi\varphi $\backslash varphi$ \varpi\varpi $\backslash varpi$ \varrho\varrho $\backslash varrho$ \varsigma\varsigma $\backslash varsigma$ \vartheta\vartheta $\backslash vartheta$ \vdash\vdash $\backslash vdash$ (relation) \vee\vee $\backslash vee$ (binary operation) \Vert\Vert $\backslash Vert$ (delimiter) \vert\vert $\backslash vert$ (delimiter) \wedge\wedge $\backslash wedge$ (binary operation) \wp\wp $\backslash wp$ \wr\wr $\backslash wr$ (binary operation) \Xi\Xi $\backslash Xi$ \xi\xi $\backslash xi$ \zeta\zeta $\backslash zeta$

Math functions Math accents Math symbols Math formulas

math functionsfunctions, math These commands produce roman function names in math mode with proper spacing. \arccos\arccos $\backslash arccos$ \arcsin\arcsin $\backslash arcsin$ \arctan\arctan $\backslash arctan$ \arg\arg $\backslash arg$ \bmod\bmod Binary modulo operator ($x\; \backslash bmod\; y$) \cos\cos $\backslash cos$ \cosh\cosh $\backslash cosh$ \cot\cot $\backslash cos$ \coth\coth $\backslash cosh$ \csc\csc $\backslash csc$ \deg\deg $\backslash deg$ \det\det $\backslash deg$ \dim\dim $\backslash dim$ \exp\exp $\backslash exp$ \gcd\gcd $\backslash gcd$ \hom\hom $\backslash hom$ \inf\inf $\backslash inf$ \ker\ker $\backslash ker$ \lg\lg $\backslash lg$ \lim\lim $\backslash lim$ \liminf\liminf $\backslash liminf$ \limsup\limsup $\backslash limsup$ \ln\ln $\backslash ln$ \log\log $\backslash log$ \max\max $\backslash max$ \min\min $\backslash min$ \pmod\pmod parenthesized modulus, as in ($\backslash pmod\; 2^n\; -\; 1$) \Pr\Pr $\backslash Pr$ \sec\sec $\backslash sec$ \sin\sin $\backslash sin$ \sinh\sinh $\backslash sinh$ \sup\sup $\backslash sup$ \tan\tan $\backslash tan$ \tanh\tanh $\backslash tanh$

Math accents Spacing in math mode Math functions Math formulas

math accentsaccents, mathematical &latex; provides a variety of commands for producing accented letters in math. These are different from accents in normal text (see Accents). \acute\acuteacute accent, math Math acute accent: $\backslash acutex$. \breve\brevebreve accent, math Math breve accent: $\backslash brevex$. \check\checkcheck accent, mathhác<ek accent, math Math hác<ek (check) accent: $\backslash checkx$. \ddot\ddotdouble dot accent, math Math dieresis accent: $\backslash ddotx$. \dot\dotoverdot accent, mathdot over accent, math Math dot accent: $\backslash dotx$. \grave\gravegrave accent, math Math grave accent: $\backslash gravex$. \hat\hathat accent, mathcircumflex accent, math Math hat (circumflex) accent: $\backslash hatx$. \imath\imathdotless i, math Math dotless i. \jmath\jmathdotless j, math Math dotless j. \tilde\tildetilde accent, math Math tilde accent: $\backslash tildex$. \vec\vecvector symbol, math Math vector symbol: $\backslash vecx$. \widehat\widehatwide hat accent, math Math wide hat accent: $\backslash widehatx+y$. \widehat\widehatwide tile accent, math Math wide tilde accent: $\backslash widetildex+y$.

Spacing in math mode Math Miscellany Math accents Math formulas

spacing within math modemath mode, spacing In a math environment, &latex; ignores the spaces you type and puts in the spacing according to the normal rules for mathematics texts. If you want different spacing, &latex; provides the following commands for use in math mode: \;\; A thick space ($5\backslash over18\backslash ,$quad). \: \>\:\> Both of these produce a medium space ($2\backslash over9\backslash ,$quad). \,\, A thin space ($1\backslash over6\backslash ,$quad); not restricted to math mode. \! A negative thin space ($-1\backslash over6\backslash ,$quad).

Math Miscellany Spacing in math mode Math formulas

math Miscellany \*\*discretionary multiplicationmultiplication symbol, discretionary line break A “discretionary” multiplication symbol, at which a line break is allowed. \cdots\cdots A horizontal ellipsis with the dots raised to the center of the line. \ddots\ddots A diagonal ellipsis: $\backslash ddots$. \frac{num}{den}\frac{num}{den}\frac Produces the fraction num divided by den. \left delim1 ... \right delim2\left delim1 ... \right delim2\rightnull delimiter The two delimiters need not match; . acts as a null delimiter, producing no output. The delimiters are sized according to the math in between. Example: \left( \sum_i=1^10 a_i \right]. \overbrace{text}\overbrace{text} Generates a brace over text. For example, $\backslash overbracex+\backslash cdots+x^k\; \backslash rm\backslash ;times$. \overline{text}\overline{text} Generates a horizontal line over tex. For exampe, $\backslash overlinex+y$. \sqrt[root]{arg}\sqrt[root]{arg} Produces the representation of the square root of arg. The optional argument root determines what root to produce. For example, the cube root of x+y would be typed as $\sqrt[3]{x+y}$. \stackrel{text}{relation}\stackrel{text}{relation} Puts text above relation. For example, \stackrel{f}{\longrightarrow}. \underbrace{math}\underbrace{math} Generates math with a brace underneath. \underline{text}\underline{text} Causes text, which may be either math mode or not, to be underlined. \vdots\vdots\vdots Produces a vertical ellipsis.

Modes Page Styles Math formulas Top modesparagraph modemath modeleft-to-right modelR mode When &latex; is processing your input text, it is always in one of three modes: • Paragraph mode Math mode Left-to-right mode, called LR mode for short &latex; changes mode only when it goes up or down a staircase to a different level, though not all level changes produce mode changes. Mode changes occur only when entering or leaving an environment, or when &latex; is processing the argument of certain text-producing commands. “Paragraph mode” is the most common; it's the one &latex; is in when processing ordinary text. In that mode, &latex; breaks your text into lines and breaks the lines into pages. &latex; is in “math mode” when it's generating a mathematical formula. In “LR mode”, as in paragraph mode, &latex; considers the output that it produces to be a string of words with spaces between them. However, unlike paragraph mode, &latex; keeps going from left to right; it never starts a new line in LR mode. Even if you put a hundred words into an \mbox, &latex; would keep typesetting them from left to right inside a single box, and then complain because the resulting box was too wide to fit on the line. &latex; is in LR mode when it starts making a box with an \mbox command. You can get it to enter a different mode inside the box - for example, you can make it enter math mode to put a formula in the box. There are also several text-producing commands and environments for making a box that put &latex; in paragraph mode. The box make by one of these commands or environments will be called a parbox. When &latex; is in paragraph mode while making a box, it is said to be in “inner paragraph mode”. Its normal paragraph mode, which it starts out in, is called “outer paragraph mode”. Page Styles Spaces Modes Top styles, pagepage styles The \documentclass command determines the size and position of the page's head and foot. The page style determines what goes in them. \maketitle \maketitle Generate a title page. \pagenumbering \pagenumbering Set the style used for page numbers. \pagestyle \pagestyle Change the headings/footings style. \thispagestyle \thispagestyle Change the headings/footings style for this page. \maketitle \pagenumbering Page Styles

titles, making\maketitle The \maketitle command generates a title on a separate title page—except in the article class, where the title is placed at the top of the first page. Information used to produce the title is obtained from the following declarations: \author{name \and name2}\author{name \and name2}author, for titlepage\\ for \author\and for \author The \author command declares the document author(s), where the argument is a list of authors separated by \and commands. Use \\ to separate lines within a single author's entry—for example, to give the author's institution or address. \date{text}\date{text}date, for titlepage The \date command declares text to be the document's date. With no \date command, the current date (see \today) is used. \thanks{text}\thanks{text}thanks, for titlepagecredit footnote The \thanks command produces a \footnote to the title, usually used for credit acknowledgements. \title{text}\title{text}title, for titlepage\\ for \title The \title command declares text to be the title of the document. Use \\ to force a line break, as usual.

\pagenumbering \pagestyle \maketitle Page Styles

\pagenumberingpage numbering style Synopsis: \pagenumbering{style} Specifies the style of page numbers, according to style: arabic arabic numerals roman lowercase Roman numerals Roman uppercase Roman numerals alph lowercase letters Alph uppercase letters

\pagestyle \thispagestyle \pagenumbering Page Styles

\pagestyleheader stylefooter stylerunning header and footer style Synopsis: \pagestyle{style} The \pagestyle command specifies how the headers and footers are typeset from the current page onwards. Values for style: plain Just a plain page number. empty Empty headers and footers, e.g., no page numbers. headings Put running headers on each page. The document style specifies what goes in the headers. myheadings Custom headers, specified via the \markboth or the \markright commands. Here are the descriptions of \markboth and \markright: \markboth{left}{right}\markboth{left}{right} Sets both the left and the right heading. A “left-hand heading” (left) is generated by the last \markboth command before the end of the page, while a “right-hand heading” (right is generated by the first \markboth or \markright that comes on the page if there is one, otherwise by the last one before the page. \markright{right}\markright{right} Sets the right heading, leaving the left heading unchanged.

\thispagestyle \pagestyle Page Styles

\thispagestyle The \thispagestyle command works in the same manner as the \pagestyle command (see previous section) except that it changes to style for the current page only.

Spaces Boxes Page Styles Top spaces &latex; has many ways to produce white (or filled) space. Another space-producing command is \, to produce a “thin” space (usually 1/6quad). It can be used in text mode, but is more often useful in math mode (see Spacing in math mode). Horizontal space \hspace \hspace Fixed horizontal space. \SPACE \SPACE Normal interword space. \AT \AT Ending a sentence. \thinspace \thinspace One-sixth of an em. \/ \/ Per-character italic correction. \hfill \hfill Stretchable horizontal space. \hrulefill \hrulefill Stretchable horizontal rule. \dotfill \dotfill Stretchable horizontal dots. Vertical space \addvspace \addvspace Add arbitrary vertical space if needed. \bigskip \medskip \smallskip \bigskip \medskip \smallskip Fixed vertical spaces. \vfill \vfill Infinitely stretchable vertical space. \vspace \vspace Add arbitrary vertical space. \hspace \SPACE Spaces

\hspace Synopsis: \hspace[*]{length} The \hspace command adds horizontal space. The length argument can be expressed in any terms that &latex; understands: points, inches, etc. It is a rubber length. You can add both negative and positive space with an \hspace command; adding negative space is like backspacing. &latex; normally removes horizontal space that comes at the beginning or end of a line. To preserve this space, use the optional * form.

\hfill \hrulefill \/ Spaces

\hfillThe \hfill fill command produces a “rubber length” which has no natural space but can stretch or shrink horizontally as far as needed. \fillThe \fill parameter is the rubber length itself (technically, the glue value 0pt plus1fill); thus, \hspace\fill is equivalent to \hfill.

\SPACE \AT \hspace Spaces

\SPACE\TAB\NEWLINE The \ (space) command produces a normal interword space. It's useful after punctuation which shouldn't end a sentence. For example Knuth's article in Proc.\ Amer.\ Math\. Soc.\ is fundamental. It is also often used after control sequences, as in \TeX\ is a nice system. In normal circumstances, \tab and \newline are equivalent to \ .

\AT \thinspace \SPACE Spaces

\@ The \@ command makes the following punctuation character end a sentence even if it normally would not. This is typically used after a capital letter. Here are side-by-side examples with and without \@: &dots; in C\@. Pascal, though &dots; &dots; in C. Pascal, though &dots; produces &dots; in C&eosperiod; Pascal, though &dots; &dots; in C. Pascal, though &dots;

\thinspace \/ \AT Spaces

\thinspace \thinspace produces an unbreakable and unstretchable space that is 1/6 of an em. This is the proper space to use in nested quotes, as in '”.

\/ \hfill \thinspace Spaces

\/ The \/ command produces an italic correction. This is a small space defined by the font designer for a given character, to avoid the character colliding with whatever follows. The italic f character typically has a large italic correction value. If the following character is a period or comma, it's not necessary to insert an italic correction, since those punctuation symbols have a very small height. However, with semicolons or colons, as well as normal letters, it can help. Compare f: f; (in the &tex; output, the `f's are nicely separated) with f: f;. Despite the name, roman characters can also have an italic correction. Compare pdf&tex; (in the &tex; output, there is a small space after the `f') with pdf&tex;.

\hrulefill \dotfill \hfill Spaces

\hrulefill The \hrulefill fill command produces a “rubber length” which can stretch or shrink horizontally. It will be filled with a horizontal rule.

\dotfill \addvspace \hrulefill Spaces

\dotfill The \dotfill command produces a “rubber length” that fills with dots instead of just white space.

\addvspace \bigskip \medskip \smallskip \dotfill Spaces

\addvspacevertical spacespace, inserting vertical \addvspace{length} The \addvspace command normally adds a vertical space of height length. However, if vertical space has already been added to the same point in the output by a previous \addvspace command, then this command will not add more space than needed to make the natural length of the total vertical space equal to length.

\bigskip \medskip \smallskip \vfill \addvspace Spaces

These commands produce a given amount of space. \bigskip\bigskip\bigskipamount The same as \vspace{bigskipamount}, ordinarily about one line space (with stretch and shrink). \medskip\medskip\medskipamount The same as \vspace{medskipamount}, ordinarily about half of a line space (with stretch and shrink). \smallskip\smallskip\smallskipamount The same as \vspace{smallskipamount}, ordinarily about a quarter of a line space (with stretch and shrink). The \...amount parameters are determined by the document class.

\vfill \vspace \bigskip \medskip \smallskip Spaces

\vfill The \vfill fill command produces a rubber length (glue) which can stretch or shrink vertically as far as needed. It's equivalent to \vspace{\fill} (see \hfill).

\vspace \vfill Spaces

\vspace Synopsis: \vspace[*]{length} The \vspace command adds the vertical space length, i.e., a rubber length. length can be negative or positive. Ordinarily, &latex; removes vertical space added by \vspace at the top or bottom of a page. With the optional * argument, the space is not removed.

Boxes Special insertions Spaces Top boxes All the predefined length parameters (see Predefined lengths) can be used in the arguments of the box-making commands. \mbox \mbox Horizontal boxes. \fbox and \framebox \fbox and \framebox Put a frame around a box. lrbox lrbox An environment like \sbox. \makebox \makebox Box, adjustable position. \parbox \parbox Box with text in paragraph mode. \raisebox \raisebox Raise or lower text. \savebox \savebox Like \makebox, but save the text for later use. \sbox \sbox Like \mbox, but save the text for later use. \usebox \usebox Print saved text. \mbox \fbox and \framebox Boxes

\mbox hyphenation, preventingThe \mbox command creates a box just wide enough to hold the text created by its argument. The text is not broken into lines, so it can be used to prevent hyphenation.

\fbox and \framebox lrbox \mbox Boxes

\fbox\framebox Synopses: \fbox{text} \framebox[width][position]{text} The \fbox and \framebox commands are like \mbox, except that they put a frame around the outside of the box being created. In addition, the \framebox command allows for explicit specification of the box width with the optional width argument (a dimension), and positioning with the optional position argument. \fboxrule\fboxsepBoth commands produce a rule of thickness \fboxrule (default .4pt), and leave a space of \fboxsep (default 3pt) between the rule and the contents of the box. See \framebox (picture), for the \framebox command in the picture environment.

lrbox \makebox \fbox and \framebox Boxes

lrbox \begin{lrbox}{cmd} text \end{lrbox} This is the environment form of \sbox. The text inside the environment is saved in the box cmd, which must have been declared with \newsavebox.

\makebox \parbox lrbox Boxes

\makebox Synopsis: \makebox[width][position]{text} The \makebox command creates a box just wide enough to contain the text specified. The width of the box is specified by the optional width argument. The position of the text within the box is determined by the optional position argument, which may take the following values: c Centered (default). l Flush left. r Flush right. s Stretch (justify) across entire width; text must contain stretchable space for this to work. \makebox is also used within the picture environment see \makebox (picture).

\parbox \raisebox \makebox Boxes

\parbox Synopsis: \parbox[position][height][inner-pos]{width}{text} The \parbox command produces a box whose contents are created in paragraph mode. It should be used to make a box small pieces of text, with nothing fancy inside. In particular, you shouldn't use any paragraph-making environments inside a \parbox argument. For larger pieces of text, including ones containing a paragraph-making environment, you should use a minipage environment (see minipage). \parbox has two mandatory arguments: width the width of the parbox; text the text that goes inside the parbox. The optional position argument allows you to align either the top or bottom line in the parbox with the baseline of the surrounding text (default is top). The optional height argument overrides the natural height of the box. The inner-pos argument controls the placement of the text inside the box, as follows; if it is not specified, position is used. t text is placed at the top of the box. c text is centered in the box. b text is placed at the bottom of the box. s stretch vertically; the text must contain vertically stretchable space for this to work.

\raisebox \savebox \parbox Boxes

\raisebox Synopsis: \raisebox{distance}[height][depth]{text} The \raisebox command raises or lowers text. The first mandatory argument specifies how high text is to be raised (or lowered if it is a negative amount). text itself is processed in LR mode. The optional arguments height and depth are dimensions. If they are specified, &latex; treats text as extending a certain distance above the baseline (height) or below (depth), ignoring its natural height and depth.

\savebox \sbox \raisebox Boxes

\savebox Synopsis: \savebox{\boxcmd}[width][pos]{text} This command typeset text in a box just as with \makebox (see \makebox), except that instead of printing the resulting box, it saves it in the box labeled \boxcmd, which must have been declared with \newsavebox (see \newsavebox).

\sbox \usebox \savebox Boxes

\sbox Synopsis: \sbox{\boxcmd}{text} \sbox types text in a box just as with \mbox (see \mbox) except that instead of the resulting box being included in the normal output, it is saved in the box labeled \boxcmd. \boxcmd must have been previously declared with \newsavebox (see \newsavebox).

\usebox \sbox Boxes

\usebox Synopsis: \usebox{\boxcmd} \usebox producesthe box most recently saved in the bin \boxcmd by a \savebox command (see \savebox).

Special insertions Splitting the input Boxes Top &latex; provides commands for inserting characters that have a special meaning do not correspond to simple characters you can type. Reserved characters Reserved characters Inserting # $ % & ~ _ ^ \ { } Text symbols Text symbols Inserting other non-letter symbols in text. Accents Accents Inserting accents. Non-English characters Non-English characters Inserting other non-English characters. \rule \rule Inserting lines and rectangles. \today \today Inserting today's date. Reserved characters Text symbols Special insertions

reserved characterscharacters, reserved The following characters play a special role in &latex; and are called “reserved characters” or “special characters”. # $ % & ~ _ ^ \ { } \#\$\%\&\_\{\}Whenever you write one of these characters into your file, &latex; will do something special. If you simply want the character to be printed as itself, include a \ in front of the character. For example, \$ will produce $ in your output. \backslashOne exception to this rule is \ itself, because \\ has its own special (context-dependent) meaning. A roman \ is produced by typing $\backslash$ in your file, and a typewriter \ is produced by using \ in a verbatim command (see verbatim). \~\^Also, \~ and \^ place tilde and circumflex accents over the following letter, as in õ and ô (see Accents); to get a standalone ~ or ^, you can again use a verbatim command. \symbolaccessing any character of a font Finally, you can access any character of the current font once you know its number by using the \symbol command. For example, the visible space character used in the \verb* command has the code decimal 32, so it can be typed as \symbol{32}. You can also specify octal numbers with ' or hexadecimal numbers with ", so the previous example could also be written as \symbol{'40} or \symbol{"20}.

Text symbols Accents Reserved characters Special insertions

text symbols&latex; provides commands to generate a number of non-letter symbols in running text. \copyright\copyrightcopyright symbol The copyright symbol, ©right;. \dag\dagdagger, in text The dagger symbol (in text). \ddag\ddagdouble dagger, in text The double dagger symbol (in text). \LaTeX\LaTeX&latex; logologo, &latex; The &latex; logo. \ldots\ldotsellipsis An ellipsis (three dots at the baseline): `&dots;'. This command also works in math mode. \lq\lqleft quoteopening quote Left (opening) quote: `. \P\Pparagraph signpilcrow Paragraph sign (pilcrow). \pounds\poundspounds symbolsterling symbol English pounds sterling. \rq\rqright quoteclosing quote Right (closing) quote: '. \S\Ssection symbol Section symbol. \TeX\TeX&tex; logologo, &tex; The &tex; logo.

Accents Non-English characters Text symbols Special insertions

accentscharacters, accentedletters, accented &latex; has wide support for many of the world's scripts and languages, through the babel package and related support. This section does not attempt to cover all that support. It merely the core &latex; commands for creating accented characters. \"\" (umlaut accent)umlaut accent Produces an umlaut, as in ö. \'\' (acute accent)acute accent Produces an acute accent, as in ó. In the tabbing environment, pushes current column to the right of the previous column (see tabbing). \.\. (dot-over accent)dot accentdot-over accent Produces a dot accent over the following, as in o.. \=\= (macron accent)macron accentoverbar accentbar-over accent Produces a macron (overbar) accent over the following, as in o¯. \^\^ (circumflex accent)circumflex accenthat accent Produces a circumflex (hat) accent over the following, as in ô. \`\` (grave accent)grave accent Produces a grave accent over the following, as in ò. In the tabbing environment, move following text to the right margin (see tabbing). \~\~ (tilde accent)tilde accent Produces a tilde accent over the following, as in ñ. \b\b (bar-under accent)bar-under accent Produces a bar accent under the following, as in o_. \bar\bar (macron, bar-over accent)bar-over accentmacron accent Produces a macron accent over the following, as in o¯. \c\c (cedilla accent)cedilla accent Produces a cedilla accent under the following, as in \d\d (dot-under accent)dot-under accent Produces a dot accent under the following, as in .o. \H\H (Hungarian umlaut accent)hungarian umlaut accent Produces a long Hungarian umlaut accent over the following, as in o''. \i\i (dotless i)dotless i Produces a dotless i, as in `i'. \j\j (dotless j)dotless j Produces a dotless j, as in `j'. \t\t (tie-after accent)tie-after accent Produces a tie-after accent, as in `oo['. \u\u (breve accent)breve accent Produces a breve accent, as in `o('. \v\v (breve accent)hacek accentcheck accent Produces a hác<ek (check) accent, as in `o<'.

Non-English characters \rule Accents Special insertions

special charactersnon-English characterscharacters, non-Englishletters, non-English Here are the basic &latex; commands for inserting characters commonly used in languages other than English. \aa \AA\aa (å)\AA (Å)aring å and Å. \ae \AE\ae (æ)\AE (Æ)ae ligature æ and Æ. \l \L\l (/l)\L (/L)polish l /l and /L. \o \O\o (ø)\O (Ø)oslash ø and Ø. \oe \OE\oe (œ)\OE (Œ)oe ligature œ and Œ. \ss\ss (ß)es-zet German lettersharp S letters ß.

\rule \today Non-English characters Special insertions

\rule Synopsis: \rule[raise]{width}{thickness} The \rule command produces rules, that is, lines or rectangles. The arguments are: raise How high to raise the rule (optional). width The length of the rule (mandatory). thickness The thickness of the rule (mandatory).

\today \rule Special insertions

\today The \today command produces today's date, in the format month dd, yyyy; for example, `July 4, 1976'. It uses the predefined counters \day, \month, and \year (see \day \month \year) to do this. It is not updated as the program runs. datetime packageThe datetime package, among others, can produce a wide variety of other date formats.

Splitting the input Front/back matter Special insertions Top splitting the input fileinput file A large document requires a lot of input. Rather than putting the whole input in a single large file, it's more efficient to split it into several smaller ones. Regardless of how many separate files you use, there is one that is the root file; it is the one whose name you type when you run &latex;. \include \include Conditionally include a file. \includeonly \includeonly Determine which files are included. \input \input Unconditionally include a file. \include \includeonly Splitting the input

\include Synopsis: \include{file} If no \includeonly command is present, the \include command executes \clearpage to start a new page (see \clearpage), then reads file, then does another \clearpage. Given an \includeonly command, the \include actions are only run if file is listed as an argument to \includeonly. See the next section. nested \include, not allowedThe \include command may not appear in the preamble or in a file read by another \include command.

\includeonly \input \include Splitting the input

\includeonly Synopsis: \includeonly{file1,file2,...} The \includeonly command controls which files will be read by subsequent \include commands. The list of filenames is comma-separated. Each file must exactly match a filename specified in a \include command for the selection to be effective. This command can only appear in the preamble.

\input \includeonly Splitting the input

\input Synopsis: \input{file} The \input command causes the specified file to be read and processed, as if its contents had been inserted in the current file at that point. If file does not end in .tex (e.g., foo or foo.bar), it is first tried with that extension (foo.tex or foo.bar.tex). If that is not found, the original file is tried (foo or foo.bar).

Front/back matter Letters Splitting the input Top Tables of contents Tables of contents Glossaries Glossaries Indexes Indexes Tables of contents Glossaries Front/back matter

table of contents, creating \tableofcontentsA table of contents is produced with the \tableofcontents command. You put the command right where you want the table of contents to go; &latex; does the rest for you. A previous run must have generated a .toc file. The \tableofcontents command produces a heading, but it does not automatically start a new page. If you want a new page after the table of contents, write a \newpage command after the \tableofcontents command. \listoffigures\listoftablesThe analagous commands \listoffigures and \listoftables produce a list of figures and a list of tables, respectively. Everything works exactly the same as for the table of contents. \nofilesThe command \nofiles overrides these commands, and prevents any of these lists from being generated. \addcontentsline \addcontentsline Add an entry to table of contents etc. \addtocontents \addtocontents Add text directly to table of contents file etc.

\addcontentsline \addtocontents Tables of contents \addcontentsline{ext}{unit}{text}table of contents entry, manually adding The \addcontentsline command adds an entry to the specified list or table where: ext The extension of the file on which information is to be written, typically one of: toc (table of contents), lof (list of figures), or lot (list of tables). unit The name of the sectional unit being added, typically one of the following, matching the value of the ext argument: toc The name of the sectional unit: part, chapter, section, subsection, subsubsection. lof For the list of figures. lot For the list of tables. entry The actual text of the entry. \contentslineWhat is written to the .ext file is the command \contentsline{unit}{name}. \addtocontents \addcontentsline Tables of contents \addtocontents{ext}{text} The \addtocontents command adds text (or formatting commands) directly to the .ext file that generates the table of contents or lists of figures or tables. ext The extension of the file on which information is to be written: toc (table of contents), lof (list of figures), or lot (list of tables). text The text to be written. Glossaries Indexes Tables of contents Front/back matter

glossaries \makeglossaryThe command \makeglossary enables creating glossaries. \glossary.glo fileThe command \glossary{text} writes a glossary entry for text to an auxiliary file with the .glo extension. \glossaryentrySpecifically, what gets written is the command \glossaryentry{text}{pageno}, where pageno is the current \thepage value. The glossary package on CTAN provides support for fancier glossaries.

Indexes Glossaries Front/back matter

indexes \makeindexThe command \makeindex enables creating indexes. \index.idx fileThe command \index{text} writes a glossary entry for text to an auxiliary file with the .idx extension. \indexentrySpecifically, what gets written is the command \indexentry{text}{pageno}, where pageno is the current \thepage value. The rubber length \indexspace is inserted before each new letter in the index; its default value is 10pt plus5pt minus3pt. makeindex programxindy program.ind file The .idx file can then be sorted with an external command, typically makeindex or xindy, resulting in a .ind file, which can then be used to typeset the index.

Letters Terminal Input/Output Front/back matter Top letterscreating letters You can use &latex; to typeset letters, both personal and business. The letter document class is designed to make a number of letters at once, although you can make just one if you so desire. Your .tex source file has the same minimum commands as the other document classes, i.e., you must have the following commands as a minimum: \documentclass{letter} \begin{document} ... letters ... \end{document} Each letter is a letter environment, whose argument is the name and address of the recipient. For example, you might have: \begin{letter}{Mr. Joe Smith\\ 2345 Princess St. \\ Edinburgh, EH1 1AA} ... \end{letter} The letter itself begins with the \opening command. The text of the letter follows. It is typed as ordinary &latex; input. Commands that make no sense in a letter, like \chapter, do not work. The letter closes with a \closing command. \\ for lettersAfter the closing, you can have additional material. The \cc command produces the usual “cc: &dots;”. There's also a similar \encl command for a list of enclosures. With both these commands, use \\ to separate the items. These commands are used with the letter class. \address \address Your return address. \cc \cc Cc list. \closing \closing Saying goodbye. \encl \encl List of enclosed material. \location \location Your organisation's address. \makelabels \makelabels Making address labels. \name \name Your name, for the return address. \opening \opening Saying hello. \ps \ps Adding a postscript. \signature \signature Your signature. \startbreaks \startbreaks Allow page breaks. \stopbreaks \stopbreaks Disallow page breaks. \telephone \telephone Your phone number. \address \cc Letters

\address The \address specifies the return address of a letter, as it should appear on the letter and the envelope. Separate lines of the address should be separated by \\ commands. If you do not make an \address declaration, then the letter will be formatted for copying onto your organisation's standard letterhead. (See Overview, for details on your local implementation). If you give an \address declaration, then the letter will be formatted as a personal letter.

\cc \closing \address Letters

\cccc list, in letters Synopsis: \cc{name1\\name2} Produce a list of names the letter was copied to. Each name is printed on a separate line.

\closing \encl \cc Letters

\closingletters, endingclosing letters Synopsis: \closing{text} A letter closes with a \closing command, for example, \closing{Best Regards,}

\encl \location \closing Letters

\enclenclosure list Synopsis: \encl{line1\\line2} Declare a list of one more enclosures.

\location \makelabels \encl Letters

\location \location{address} This modifies your organisation's standard address. This only appears if the firstpage pagestyle is selected.

\makelabels \name \location Letters

\makelabels \makelabels{number} If you issue this command in the preamble, &latex; will create a sheet of address labels. This sheet will be output before the letters.

\name \opening \makelabels Letters

\name \name{June Davenport} Your name, used for printing on the envelope together with the return address.

\opening \ps \name Letters

\openingletters, starting Synopsis: \opening{text} A letter begins with the \opening command. The mandatory argument, text, is whatever text you wish to start your letter. For instance: \opening{Dear Joe,}

\ps \signature \opening Letters

\pspostscript, in letters Use the \ps command to start a postscript in a letter, after \closing.

\signature \startbreaks \ps Letters

\signature Your name, as it should appear at the end of the letter underneath the space for your signature. \\ starts a new line within text as usual.

\startbreaks \stopbreaks \signature Letters

\startbreaks \startbreaks Used after a \stopbreaks command to allow page breaks again.

\stopbreaks \telephone \startbreaks Letters

\stopbreaks \stopbreaks Inhibit page breaks until a \startbreaks command occurs.

\telephone \stopbreaks Letters

\telephone \telephone{number} This is your telephone number. This only appears if the firstpage pagestyle is selected.

Terminal Input/Output Command Line Letters Top input/Outputterminal Input/Output \typein \typein Read text from the terminal. \typeout \typeout Write text to the terminal. \typein \typeout Terminal Input/Output

\typein Synopsis: \typein[\cmd]{msg} \typein prints msg on the terminal and causes &latex; to stop and wait for you to type a line of input, ending with return. If the optional \cmd argument is omitted, the typed input is processed as if it had been included in the input file in place of the \typein command. If the \cmd argument is present, it must be a command name. This command name is then defined or redefined to be the typed input.

\typeout \typein Terminal Input/Output

\typeout Synopsis: \typeout{msg} Prints msg on the terminal and in the log file. Commands in msg that are defined with \newcommand or \renewcommand (among others) are replaced by their definitions before being printed. &latex;'s usual rules for treating multiple spaces as a single space and ignoring spaces after a command name apply to msg. A \space command in msg causes a single space to be printed, independent of surrounding spaces. A ^^J in msg prints a newline.

Command Line Document templates Terminal Input/Output Top command Line The input file specification indicates the file to be formatted; &tex; uses .tex as a default file extension. If you omit the input file entirely, &tex; accepts input from the terminal. You specify command options by supplying a string as a parameter to the command; e.g. latex '\nonstopmode\input foo.tex' will process foo.tex without pausing after every error. * promptprompt, *\stopIf &latex; stops in the middle of the document and gives you a * prompt, it is waiting for input. You can type \stop (and return) and it will prematurely end the document. Document templates Command Index Command Line Top document templates Although not reference material, perhaps these document templates will be useful. book template book template beamer template beamer template tugboat template tugboat template book template beamer template Document templates

\documentclass{book} \title{Book Class Template} \author{Alex Author} \begin{document} \maketitle \chapter{First} Some text. \chapter{Second} Some other text. \section{A subtopic} The end. \end{document}

beamer template tugboat template book template Document templates

The beamer class creates slides presentations. \documentclass{beamer} \title{Beamer Class template} \author{Alex Author} \date{July 31, 2007} \begin{document} \maketitle % without [fragile], any {verbatim} code gets mysterious errors. \begin{frame}[fragile] \frametitle{First Slide} \begin{verbatim} This is \verbatim! \end{verbatim} \end{frame} \end{document}

tugboat template beamer template Document templates

TUGboat is the journal of the &tex; Users Group, http://tug.org/TUGboat. \documentclass{ltugboat} % ltugproc for proceedings \usepackage{graphicx} \usepackage{ifpdf} \ifpdf \usepackage[breaklinks,colorlinks,linkcolor=black,citecolor=black, urlcolor=black]{hyperref} \else \usepackage{url} \fi \begin{document} \title{Example \TUB\ Regular Article} % repeat info for each author. \author{First Last} \address{Street Address \\ Town, Postal \\ Country} \netaddress{user (at) example dot org} \personalURL{http://example.org/~user/} \maketitle % The abstract comes after \maketitle in ltugboat. \begin{abstract} This is an example article for a regular \TUB{} issue. \end{abstract} \section{Introduction} This is an example article for \TUB, from \url{http://tug.org/TUGboat/location.html}. We recommend the graphicx package for image inclusions, and the hyperref package for active url's (in the \acro{PDF} output). \TUB\ is produced using \acro{PDF} files exclusively, nowadays. The \texttt{ltug*} classes provide these abbreviations, among many others: {\small \begin{verbatim} \AllTeX \AMS \AmS \AmSLaTeX \AmSTeX \aw \AW \BibTeX \CandT \CTAN \DTD \DVItoVDU \HTML \ISBN \ISSN \JTeX \JoT \LAMSTeX \LaTeXe \Mc \mf \MFB \mtex \pcMF \PCTeX \pcTeX \Pas \PiC \PiCTeX \plain \POBox \PS \SC \SGML \SliTeX \TANGLE \TB \TP \TUB \TUG \tug \UG \UNIX \VAX \VorTeX \XeT \WEB \WEAVE \Dash \dash \vellipsis \bull \cents \Dag \careof \thinskip \acro{FRED} -> {\sc fred} % please use! \cs{fred} -> \fred \env{fred} -> \begin{fred} \meta{fred} -> <fred> \nth{n} -> 1st, 2nd, ... \sfrac{3/4} -> 3/4 \booktitle{Book of Fred} \end{verbatim} } For more information, see the ltubguid document at: \url{http://mirror.ctan.org/macros/latex/contrib/tugboat} Email \verb|tugboat@tug.org| if problems or questions. \bibliographystyle{plain} % we recommend the plain bibliography style \nocite{book-minimal} % just making the bibliography non-empty \bibliography{xampl} % xampl.bib comes with BibTeX \makesignature % not in ltugproc \end{document}

Concept Index Command Index Top cp Command Index Concept Index Document templates Top fn