LaTeX Project Public LicenseThe LaTeX Project Public License (LPPL) is a free and open source softwaresoftware license originally written for the LaTeX system. Software distributed under the terms of the LPPL can be regarded as free software; however, it is not copylefted. Besides the LaTeX base system, the LPPL is also used for most third-party LaTeX packages. Software projects other than LaTeX rarely use it.
Leslie LamportLeslie Barry Lamport (born February 7, 1941) is an American computer scientist and mathematician. Lamport is best known for his seminal work in distributed systems, and as the initial developer of the document preparation system LaTeX and the author of its first manual.
WYSIWYGIn computing, WYSIWYG ( ; what you see is what you get) is software that allows content to be edited in a form that resembles its appearance when printed or displayed as a finished product, such as a printed document, web page, or slide presentation. WYSIWYG implies a user interface that allows the user to view something very similar to the result while the document is being created.
XeTeXXeTeX ( ZEE-tekh or ; see also TeX § Pronunciation and spelling), sometimes stylized as XeTeX, is a TeX typesetting engine using Unicode and supporting modern font technologies such as OpenType, Graphite and Apple Advanced Typography (AAT). It was originally written by Jonathan Kew and is distributed under the X11 free software license. Initially developed for Mac OS X only, it is now available for all major platforms.
TeXTeX (), stylized as TeX, is a free and open source softwaretypesettingprogram that was designed and written by computer scientist and Stanford University professor Donald Knuth and first released in 1978. The term now refers to the system of extensions – which includes software programs called TeX engines, sets of TeX macros, and packages which provide extra typesetting functionality – built around the original TeX language.
TypesettingTypesetting is the composition of text for publication, display, or distribution by means of arranging physical type (or sort) in mechanical systems or glyphs in digital systems representing characters (letters and other symbols). Stored types are retrieved and ordered according to a language's orthography for visual display. Typesetting requires one or more fonts (which are widely but erroneously confused with and substituted for typefaces).
Software systemA software system is a system of intercommunicating components based on software forming part of a computer system (a combination of hardware and software). It "consists of a number of separate programs, configuration files, which are used to set up these programs, system documentation, which describes the structure of the system, and user documentation, which explains how to use the system". A software system differs from a computer program or software.
SRI InternationalAmerican scientific research institute (founded 1946)SRI International, originally the Stanford Research Institute (SRI), is a nonprofitscientificresearch institute and organization headquartered in Menlo Park, California, United States. It was established in 1946 by trustees of Stanford University to serve as a center of innovation. The organization formally separated from Stanford University in 1970 and became known as SRI International in 1977.
Free softwareGNU Guix. An example of a GNU FSDG complying free-software operating system running some representative applications.
Arabic scriptThe Arabic script is the writing system used for Arabic (Arabic alphabet) and several other languages of Asia and Africa. It is the second-most widely used alphabetic writing system in the world (after the Latin script), the second-most widely used writing system in the world by number of countries using it, and the third-most by number of users (after the Latin and Chinese scripts).UTF-8UTF-8 is a character encoding standard used for electronic communication. Defined by the Unicode Standard, the name is derived from Unicode Transformation Format – 8-bit. As of 2026, almost every webpage (99%) is transmitted as UTF-8. UTF-8 supports all 1,112,064 valid Unicode code points using a variable-width encoding of one to four one-byte (8-bit) code units. Code points with lower numerical values, which tend to occur more frequently, are encoded using fewer bytes.
DevanagariDevanagari ( DAY-və-NAH-gə-ree; in script: देवनागरी, IAST: Devanāgarī, Sanskrit pronunciation: [deːʋɐnaːɡɐriː]) is an Indic script used in the Indian subcontinent. Also simply called Nāgarī (Sanskrit: नागरी, Nāgarī), it is a left-to-right abugida (a type of segmental writing system), based on the ancient Brāhmī script. It is one of the official scripts of India and Nepal. It was developed and in regular use by the 8th century CE.
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