Source: https://en.wikipedia.org/wiki/LaTeX
LaTeX ( LAH-tekh or LAY-tekh, to rhyme with "blech"[2]), often stylized as LaTeX, is a software system for typesetting documents,[3] based on the TeX typesetting system. LaTeX provides a high-level, descriptive markup language to use TeX more easily: TeX handles the document layout, while LaTeX handles the content side for document processing. Because the plain TeX formatting commands are elementary, it provides authors with ready-made commands for formatting and layout requirements such as chapter headings, footnotes, cross-references and bibliographies.
LaTeX was originally written in the early 1980s by Leslie Lamport at SRI International.[4] The current version is LaTeX2e, first released in 1994 and incrementally updated since 2015. This update policy replaced earlier plans for a separate release of LaTeX3, which had been in development since 1989.[5] LaTeX is free software and is distributed under the LaTeX Project Public License (LPPL).[6]
Like TeX, LaTeX started as a writing tool for mathematicians and computer scientists, but from early in its development, it has also been taken up by scholars who needed to write documents that include complex math expressions or non-Latin scripts,[7][8] such as Arabic, Devanagari, and Chinese.[9]
In the early 1980s, Leslie Lamport was working at SRI, where he needed to write TeX macros for his own use. He thought that with a little extra effort, he could make a general package usable by others. Having done so, he released versions of his LaTeX macros in 1984 and 1985. Peter Gordon, an editor at Addison-Wesley, convinced Lamport to write a LaTeX user's manual for publication. Lamport was initially skeptical that anyone would pay money for it,[10] but it came out in 1986[3] and sold hundreds of thousands of copies.[10] On 21 August 1989, at a TeX Users Group (TUG) meeting at Stanford, Lamport agreed to turn over maintenance and development of LaTeX to Frank Mittelbach. Mittelbach, along with Chris Rowley and Rainer Schöpf, formed the LaTeX3 team; in 1994, they released LaTeX2e, the current standard version. LaTeX3 has been discontinued as a separate format; since 2018, it has been a programming layer within LaTeX2e.[5]
LaTeX attempts to follow the design philosophy of separating presentation from content, so that authors can focus on the content of what they are writing without attending simultaneously to its visual appearance. In preparing a LaTeX document, the author specifies the logical structure using commands such as chapter, section, table, figure, etc., and lets the LaTeX system handle the formatting and layout of these structures. As a result, it encourages the separation of the layout from the content – while still allowing manual typesetting adjustments whenever needed. This concept is similar to the mechanism by which many word processors allow styles to be defined globally for an entire document, or the use of Cascading Style Sheets in styling HyperText Markup Language (HTML) documents.
The LaTeX system is a markup language that handles typesetting and rendering,[11] and can be arbitrarily extended by using the underlying macro language to develop custom macros such as new environments and commands. Such macros are often collected into packages, which could then be made available to address some specific typesetting needs such as the formatting of complex mathematical expressions or graphics (e.g., the use of the align environment provided by the amsmath package to produce aligned equations).
To create a document in LaTeX, a user first creates a file, such as document.tex, typically using a text editor.[12] The user then gives their document.tex file as input to the TeX program (with the LaTeX macros loaded), which prompts TeX to write out a file suitable for onscreen viewing or printing.[13] This write-format-preview cycle is one of the chief ways in which working with LaTeX differs from the What-You-See-Is-What-You-Get (WYSIWYG) style of document editing. It is similar to the code-compile-execute cycle known to computer programmers. Today, many LaTeX-aware editing programs make this cycle a simple matter through the pressing of a single key while showing the output preview on the screen beside the input window. Some online LaTeX editors even automatically refresh the preview,[14][15][16][17][18] while other online tools provide incremental editing in-place, mixed in with the preview in a single window.[19]
Pronunciation and typography[edit]
The LaTeX wordmark, typeset with LaTeX's \LaTeX macro
The characters 'T', 'E', and 'X' in the name come from the Greek capital letters tau, epsilon, and chi, as the name of TeX derives from the Ancient Greek: τέχνη ('skill', 'art', 'technique'); for this reason, TeX's creator Donald Knuth promotes its pronunciation as (tekh)[20] (that is, with a voiceless velar fricative as in Modern Greek, or the 'ch' in 'loch'). Lamport remarks that "TeX is usually pronounced tech, making lah-tech, lah-tech, and lay-tech the logical choices; but language is not always logical, so lay-tecks is also possible."[21]
The name is printed in running text with a typographical logo: LaTeX. In media where the logo cannot be precisely reproduced in running text, the word is typically given the unique capitalization LaTeX. Alternatively, the TeX, LaTeX,[22] and XeTeX[23] logos can also be rendered via pure CSS and XHTML for use in graphical web browsers – by following the specifications of the internal \LaTeX macro.[24]
The example below shows the input to LaTeX and the corresponding output from the system:
Input
Output
\documentclass{article} % Starts an article
\usepackage{amsmath} % Imports amsmath
\title{\LaTeX} % Title
\begin{document} % Begins a document
\maketitle
\LaTeX{} is a document preparation system for
the \TeX{} typesetting program. It offers
programmable desktop publishing features and
extensive facilities for automating most
aspects of typesetting and desktop publishing,
including numbering and cross-referencing,
tables and figures, page layout,
bibliographies, and much more. \LaTeX{} was
originally written in 1984 by Leslie Lamport
and has become the dominant method for using
\TeX; few people write in plain \TeX{} anymore.
The current version is \LaTeXe.
% This is a comment, not shown in final output.
% The following shows typesetting power of LaTeX:
\begin{align}
E_0 &= mc^2 \
E &= \frac{mc2}{\sqrt{1-\frac{v2}{c^2}}}
\end{align}
\end{document}
CircuiTikZ and tikz diagrams created with CoCalc
As a macro package, LaTeX provides a set of macros for TeX to interpret. There are many other macro packages for TeX, including Plain TeX, GNU Texinfo, AMSTeX, Chemfig, chemmacros,[25] PSTricks, PSfrag, and ConTeXt.
When TeX "compiles" a document, it follows (from the user's point of view) the following processing sequence: Macros → TeX → Driver → Output. Different implementations of each of these steps are typically available in TeX distributions. Traditional TeX will output a DVI file, which is usually converted to a PostScript file. In 2000, Hàn Thế Thành and others wrote an implementation of TeX called pdfTeX, which also outputs to PDF and takes advantage of features available in that format.[26] The XeTeX engine developed by Jonathan Kew, on the other hand, merges modern font technologies and Unicode with TeX.[27] LuaTeX is an extended version of pdfTeX using Lua as an embedded scripting language.[28]
Compatibility and converters[edit]
LaTeX documents (.tex) can be opened with any text editor. They consist of plain text and contain no hidden formatting codes or binary information. TeX documents can also be shared by rendering the LaTeX file to other formats such as OpenDocument, XML, or class (.cls) files. LaTeX can also (and commonly is) rendered to PDF files using the LaTeX extension pdfLaTeX. LaTeX files containing Unicode text can be processed into PDFs with the inputenc package, or by the TeX extensions XeLaTeX and LuaLaTeX.
TeX4ht is a converter that can translate TeX and LaTeX documents to HTML and certain XML formats. It is now included preconfigured with all TeX distributions.
HeVeA is a converter written in OCaml that converts LaTeX documents to HTML5. This way, documents such as scientific papers, primarily typeset for printing, can be placed on the World Wide Web for online viewing. It is licensed under the Q Public License.[29]
LaTeX2HTML is a converter written in Perl that converts LaTeX documents to HTML. It is licensed under GPL v2.[30] The latest updates are available from Comprehensive TeX Archive Network (CTAN).[31]
LaTeX2RTF is a converter written in C that converts LaTeX documents to RTF. It is licensed under GPL v2 or later.[32]
LaTeXML is a converter written in Perl that converts LaTeX documents into a variety of XML-based formats, including HTML5 (with MathML), ePub ebooks, JATS, and TEI. It was developed at the National Institute of Standards and Technology by US Federal Government employees and is therefore in the public domain. It is available for free.[33]
Pandoc is a "universal document converter" able to transform LaTeX (as well as other formats) into many different file formats, including HTML5, ePub, OpenDocument (.odt), Microsoft Office Open XML (.docx), and even text with MediaWiki markup as used in Wikipedia. It is licensed under GPL v2.[34]
LaTeX has become the de facto standard to typeset mathematical expression in scientific documents.[35][36] Hence, there are several conversion tools focusing on mathematical LaTeX expressions, such as converters to MathML or Computer Algebra System.
MathJax is a JavaScript library for converting LaTeX to MathML, picture formats including SVG and PNG, or HTML for embedding within a webpage.
The Wikimedia Foundation uses MathJax to build Mathoid, a web service that uses Node.js to render math that is used in Wikipedia.[37]
KaTeX is a JavaScript library for converting LaTeX to HTML and MathML. It is developed by Khan Academy, and is among the fastest LaTeX to HTML converters.[38]
LaTeX is typically distributed along with plain TeX under a free software licence: the LaTeX Project Public License (LPPL).[39] The LPPL is not compatible with the GNU General Public License, as it requires that modified files must be clearly differentiable from their originals (usually by changing the filename); this was done to ensure that files that depend on other files will produce the expected behavior and avoid dependency hell. The LPPL is Debian Free Software Guidelines (DFSG) compliant as of version 1.3. As free software, LaTeX is available on most operating systems.
LaTeXFilename extension
.texInternet media type
application/x-latexInitial release1994; 32 years agoLatest releaseLaTeX2e1994; 32 years ago Type of formatDocument file format
LaTeX2e is the current version of LaTeX, since it replaced LaTeX 2.09 in 1994.[40] As of 2020, LaTeX3, which started in the early 1990s, is under a long-term development project.[5] Planned features include improved syntax (separation of content from styling), hyperlink support, a new user interface, access to arbitrary fonts and a new documentation.[41] Some LaTeX3 features are available in LaTeX2e using packages,[42] and by 2020 many features have been enabled in LaTeX2e by default for a gradual transition.[5]
There are many commercial implementations of the entire TeX system. System vendors may add extra features like added typefaces and telephone support. LyX is a free software, WYSIWYM visual document processor that uses LaTeX for a back-end.[43] TeXmacs is a free, WYSIWYG editor with similar functionalities as LaTeX, but with a different typesetting engine.[44] Other WYSIWYG editors that produce LaTeX include Scientific Word on Windows and macOS.
Many community-supported TeX distributions are available.
LaTeX is widely used in academia for the communication and publication of scientific documents and technical note-taking in many fields, owing partially to its support for complex mathematical notation.[45][35] It also has a prominent role in the preparation and publication of books and articles that contain complex multilingual materials, such as Arabic and Greek.[46] LaTeX uses the TeX typesetting program for formatting its output, and is itself written in the TeX macro language.
LaTeX can be used as a standalone document preparation system or as an intermediate format. In the latter role, for example, it is sometimes used as part of a pipeline for translating DocBook and other XML-based formats for PDF. The typesetting system offers programmable desktop publishing features and extensive facilities for automating most aspects of typesetting and desktop publishing, including numbering and cross-referencing of tables and figures, chapter and section headings, graphics, page layout, indexing and bibliographies.
BibTeX – Reference management software for formatting lists of references
Comparison of TeX editors
Formula editor – Computer program used to typeset mathematical works or formulae
KaTeX – JavaScript library for displaying math notation
List of document markup languages and List of markdown editors
List of TeX extensions – Extensions for the TeX typesetting system
LyX – Document processing software
MathJax – Cross-browser JavaScript library that displays mathematical equations in web browsers
xdvi – Open Source Computer Program
^ "LaTeX2e Release Newsletter". Retrieved 27 November 2024.
^ "An introduction to LaTeX". LaTeX project. Retrieved 18 April 2016.
^ Jump up to: a b Lamport, Leslie (1986). LATEX: a document preparation system. Addison-Wesley Pub. Co. ISBN 0-201-15790-X. OCLC 12550262.
^ Leslie Lamport (April 23, 2007). "The Writings of Leslie Lamport: LaTeX: A Document Preparation System". Leslie Lamport's Home Page. Retrieved 2007-04-27.
^ Jump up to: a b c d "Quo vadis LaTeX(3) Team — A look back and at the upcoming years" (PDF). www.latex-project.org. Retrieved 2023-06-09.
^ "LaTeX - A document preparation system". www.latex-project.org. Retrieved 2019-07-20.
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^ The design of LaTeX owes something to earlier markup systems such as Scribe.
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^ Lamport (1994), p 5
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^ Taraborelli, Dario. "CSS-driven TeX logos". Archived from the original on 2017-09-01. Retrieved 2008-04-21.
^ Walden, David (2005-07-15). "Travels in TeX Land: A Macro, Three Software Packages, and the Trouble with TeX". The PracTeX Journal (3). Retrieved 2008-04-21.
^ "Chemmacros - Comprehensive support for typesetting chemistry documents" (PDF). Archived from the original (PDF) on 2024-07-26.
^ "pdfTeX - TeX Users Group". www.tug.org. Retrieved 2019-07-20.
^ "XeTeX - TeX Users Group". www.tug.org. Retrieved 2019-07-20.
^ "LuaTeX". Retrieved 2023-07-18.
^ Website http://hevea.inria.fr/
^ According to LICENSE file in the source repository.
^ "CTAN: Package latex2html". ctan.org.
^ "CTAN: /tex-archive/support/latex2rtf". ctan.org.
^ "LaTeXML A LaTeX to XML/HTML/MathML Converter". dlmf.nist.gov. Retrieved 2018-08-18.
^ "Pandoc - About pandoc". pandoc.org.
^ Jump up to: a b Alexia Gaudeul (June 2007). "Do Open Source Developers Respond to Competition?: The (La)TeX Case Study". Review of Network Economics. 6 (2). doi:10.2202/1446-9022.1119. S2CID 201097782.
^ Knauff, Markus; Nejasmic, Jelica (December 19, 2019). "An Efficiency Comparison of Document Preparation Systems Used in Academic Research and Development". PLOS ONE. 9 (12) e115069. doi:10.1371/journal.pone.0115069. PMC 4272305. PMID 25526083.
^ Schubotz, Moritz; Wicke, Gabriel (2014). "Mathoid: Robust, Scalable, Fast and Accessible Math Rendering for Wikipedia". Intelligent Computer Mathematics – International Conference. CICM. Lecture Notes in Computer Science. Vol. 8543. Springer. pp. 224–235. arXiv:1404.6179. doi:10.1007/978-3-319-08434-3_17. ISBN 978-3-319-08433-6.
^ "KaTeX – The fastest math typesetting library for the web". katex.org.
^ "The LaTeX project public license". www.latex-project.org. Retrieved 2019-07-20.
^ Scavo, Tom. "TeX, LaTeX, and AMS-LaTeX". Archived from the original on 3 December 1998. Retrieved 6 September 2018.
^ Frank Mittelbach, Chris Rowley (January 12, 1999). "The LaTeX3 Project" (PDF). Retrieved 2007-07-30.
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^ Markin, Pablo (1 November 2017). "LaTeX, Open Source Software, Facilitates the Adoption of Open Access by Authors, Repositories and Journals". OpenScience. Archived from the original on 9 November 2020. Retrieved 5 November 2017.
Flynn, Peter (2017) [2002]. Formatting Information: A Beginner's Guide to LaTeX (7th online ed.). Cork: Silmaril. p. 193.
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Mittelbach, Frank; Fischer, Ulrike (2023). The LaTeX Companion (3rd ed.). Addison-Wesley. ISBN 978-0-13-465894-0. Vol II: Mittelbach, Frank; Fischer, Ulrike (2023). The LaTeX Companion (3rd ed.). Addison-Wesley. ISBN 978-0-201-36300-5.
Official website
Archived URL: https://en.wikipedia.org/wiki/LaTeX
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