LaTeX

LaTeX (/ˈlɑːtɛx/ LAH-tekh or /ˈleɪtɛx/ 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. https://en.wikipedia.org/wiki/LaTeX

also: a polymer https://en.wikipedia.org/wiki/Latex