designed for smartphones and handheld computers. Help Markup Language (HelpML) Hypermedia/Time-based Structuring Language (HyTime) HyperTeX – for including hyperlinks in TeX (and LaTeX) documents. Information Presentation Facility (IPF) – is a system for presenting online help and hypertext on IBM OS/2 systems. It is also the default help file format used by the cross-platform fpGUI Toolkit project. JATS (Journal Article Tag Suite) – a NISO standard of XML used to describe and publish STEM (scientific/technical/engineering/medical) scholarly journal articles Koppla LilyPond – a system for music notation. LinuxDoc – used by the Linux Documentation Project. Lout – a document formatting functional programming language, similar in style to LaTeX. Maker Interchange Format (MIF) Microsoft Assistance Markup Language (MAML) Music Encoding Initiative (MEI) Music Extensible Markup Language (MusicXML) Open Mathematical Documents (OMDoc) OpenMath – a markup language for mathematical formulae which can complement MathML. Parameter Value Language, stores mission data in NASA's Planetary Database System Plain Old Documentation (POD) – a simple, platform-independent documentation tool for Perl. Pillar - a markup syntax and associated tools to write and generate documentation written in Pharo PUB (markup language), an early scriptable markup language Remote Telescope Markup Language (RTML) reStructuredText (reSt) - plaintext platform-independent markup used as Python libraries documentation tool, multiple output formats (HTML, LaTeX, ODT, EPUB, ...) Retail Template Markup Language (RTML) – e-commerce language which is based on Lisp. Revisable-Form Text (RFT) – part of IBM's Document Content Architecture to allow transfer of formatted documents to other systems. S1000D – international specification for technical documentation related to commercial or military; aerospace, sea or land; vehicles or equipment. Scribble - Markup language based on Racket (programming language) Scribe – Brian Reid's seminal markup language Script – Early IBM markup language on which GML is built. Semantic, Extensible, Computational, Styled, Tagged markup language (SECST) - A more expressive and semantic alternative to Markdown that also transpiles to HTML. SiSU Structured Information, Serialized Units – generalized Markup language with several output formats SKiCal – a machine-readable format for the interchange of enhanced yellow-page directory listings. Skriv – lightweight markup language. Texinfo – GNU documentation format. Text Encoding Initiative (TEI) – Guidelines for text encoding in the humanities, social sciences and linguistics. Textile (markup language) – Plaintext XHTML web text. Time Management Markup Language(TMML) – For Time Management and rarely used for mobile alarm in 2008 troff (typesetter runoff), groff (GNU runoff) UDO (markup language), a lightweight