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LaTeX ( , commonly pronounced as or ,〔,〕 styled as LaTeX, and a shortening of Lamport TeX) is a word processor〔(【引用サイトリンク】url=http://www.oxforddictionaries.com/definition/american_english/word-processor?q=word+processor )〕 and a document markup language. It is distinguished from typical word processors such as Microsoft Word, LibreOffice Writer and Apple Pages in that the writer uses plain text as opposed to formatted text, relying on markup tagging conventions to define the general structure of a document (such as article, book, and letter), to stylise text throughout a document (such as bold and italic), and to add citations and cross-referencing. A TeX distribution such as TeXlive or MikTeX is used to produce an output file (such as PDF or DVI) suitable for printing or digital distribution. LaTeX is used for the communication and publication of scientific documents in many fields, including mathematics, physics, computer science, statistics, economics, and political science.〔http://www.latex-project.org/〕 It also has a prominent role in the preparation and publication of books and articles that contain complex multilingual materials, such as Sanskrit and Arabic. LaTeX uses the TeX typesetting program for formatting its output, and is itself written in the TeX macro language. LaTeX is widely used in academia. LaTeX can be used as a standalone document preparation system, or as an intermediate format. In the latter role, for example, it is often used as part of a pipeline for translating DocBook and other XML-based formats to 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, the inclusion of graphics, page layout, indexing and bibliographies. 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, such as Arabic, Sanskrit and Chinese. LaTeX is intended to provide a high-level language that accesses the power of TeX in an easier way for writers. In short, TeX handles the layout side, while LaTeX handles the content side for document processing. LaTeX comprises a collection of TeX macros and a program to process LaTeX documents. 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. The current version is LaTeX2e (styled as LaTeX2ε). LaTeX is free software and is distributed under the LaTeX Project Public License (LPPL). ==Typesetting system== LaTeX follows 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 simple, familiar concepts such as ''chapter'', ''section'', ''table'', ''figure'', etc., and lets the LaTeX system worry about the formatting and layout of these structures. It therefore encourages the separation of layout from content while still allowing manual typesetting adjustments where 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 to style HTML. The LaTeX system is a markup language that also handles typesetting and rendering.〔The design of LaTeX owes something to earlier markup systems such as Scribe.〕 LaTeX can be arbitrarily extended by using the underlying macro language to develop custom formats. Such macros are often collected into ''packages,'' which are available to address special formatting issues such as complicated mathematical content or graphics. Indeed, in the example below, the align environment is provided by the amsmath package.In order to create a document in LaTeX, you first write a file, say foobar.tex, using your preferred text editor. Then you give your foobar.tex file as input to the TeX program (with the LaTeX macros loaded), and TeX writes out a file suitable for viewing onscreen or printing.〔PDF output is common, but TeX can output other formats such as DVI ("Device independent" format). See below for more detail about outputs.〕 This write-format-preview cycle is one of the chief ways in which working with LaTeX differs from what-you-see-is-what-you-get word-processing. It is similar to the code-compile-execute cycle familiar to computer programmers. Today, many LaTeX-aware editing programs make this cycle a simple matter of pressing a single key, while showing the output preview on the screen beside the input window.〔See Wikipedia's comparison chart of TeX Editors.〕 Some online Latex editors automatically refresh the preview. \documentclass() \usepackage \title \date is a document preparation system for the \TeX anymore. The current version is \LaTeXe. % This is a comment, not shown in final output. % The following shows typesetting power of LaTeX: \begin E_0 &= mc^2 \\ E &= \frac}} \end \end 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「LaTeX」の詳細全文を読む スポンサード リンク
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