LaTeX (source code)

= LaTeX
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\b[LaTeX] is a document preparation system built on <TeX> technology. It lets an author specify structure such as sections and references while reusable definitions control presentation. Its facilities support <mathematical typesetting>, figures, bibliographies and cross-references.<An introduction to LaTeX by the LaTeX Project>[Introduction and LaTeX Features: document structure and scientific publishing]{ref}

For example, a minimal mathematical article can contain `\documentclass{article}\begin{document}$x^2+1$\end{document}`. The source describes the document class and content; the selected <LaTeX> definitions and <computer fonts> help determine the resulting geometry. The same separation lets one change a document's design while retaining its logical section structure.

<Leslie Lamport> developed the system; his <LaTeX: A Document Preparation System by Leslie Lamport> is listed in his bibliography as an Addison-Wesley publication from 1986.<LaTeX: A Document Preparation System by Leslie Lamport>[Author’s bibliography, entry 69: title and 1986 publication]{ref} A <TeX format> makes the system's definitions available to a compatible <TeX> implementation.