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LaTeX, 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.