LaTeX
document markup language
LaTeX ( LAH-tekh or LAY-tekh, to rhyme with "blech" or "Bertolt Brecht"), often stylized as LaTeX, is a software system for typesetting documents, 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. 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. LaTeX is free software and is distributed under the LaTeX Project Public License (LPPL).
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. For non-Latin scripts such as Arabic, Devanagari, and Chinese, special packages and compilers are needed to support UTF-8 encoding.
History
In the early 1980s, Leslie Lamport was working at SRI, where he needed to write TeX macros for his own use.
Begin with the source’s own compact description: “LaTeX” is document markup language. The dossier treats that line as a proposition to test through LaTeX, document and markup, not as a finished interpretation.
Why this record matters
The phrase “document markup language” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 22, 2026. The linked authority identifier is Q5310. VIAF identifies the subject as 181932361. The Library of Congress control number is n92088870. 5 of 5 selected statements include explicit references; 2 carry qualifiers and 0 use preferred rank. The first chronological checks are 1994, 2015 and 1989.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
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- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “LaTeX”, its source revision and the description used here.
- Expand the search: follow LaTeX primary sources, LaTeX archive and LaTeX research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “LaTeX”?
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- Which cited source is closest to the event, object or claim?
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This entry incorporates text from “LaTeX” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.