Document Style Semantics and Specification Language

The Document Style Semantics and Specification Language (DSSSL) is an international standard developed to provide a stylesheets for SGML documents.[1]

DSSSL consists of two parts: a tree transformation process that can be used to manipulate the tree structure of documents prior to presentation, and a formatting process that associates the elements in the source document with specific nodes in the target representation—the flow object tree. DSSSL specifications are device-independent pieces of information that can be interchanged between different platforms. DSSSL does not standardize the back-end formatters that generate the language's output. Such formatters may render the output for on-screen display, or write it to a computer file in a specific format (such as PostScript or Rich Text Format.[1]

Based on a subset of the Scheme programming language, it is specified by the standard ISO/IEC 10179:1996. It was developed by ISO/IEC JTC1/SC34 (ISO/IEC Joint Technical Committee 1, Subcommittee 34 - Document description and processing languages).[2][3]

SGML contains information in a machine-readable but not very human-readable format. A "stylesheet" is used to present the information stored in SGML in a more pleasing or accessible way. DSSSL can convert to a wide range of formats, including RTF, HTML, and LaTeX.

DSSSL is compatible with any SGML-based document type,[1] but it has been used most often with DocBook. In 1997, software engineer Geir Ove Grønmo published a syntax highlighting language definition for KEDIT.[4]

With the appearance of XML as an alternative to SGML, XML's associated stylesheet language XSL was also widely and rapidly adopted, from around 1999. Although DSSSL continued in use within the shrinking SGML field, XSL was very soon in use more extensively, and by more coders, than DSSSL had ever achieved. This was emphasised when previous SGML strongholds such as DocBook converted from SGML to XML, and also converted their favoured stylesheet language from DSSSL to XSL.

Sometime in or before 1994, Opera Software began drafting a "DSSSL Lite" specification for the consideration of the World Wide Web Consortium, since DSSSL was thought to be too complex for the World Wide Web.[5]

Document Style Semantics and Specification Language

See also


  1. ^ a b c Ossenbruggen, Jacco van; Lynda Hardman; Lloyd Rutledge; Anton Eliens. "Style Sheet Languages for Hypertext" (PDF). Amsterdam, The Netherlands: Centrum Wiskunde & Informatica (CWI).
  2. ^ ISO. "JTC 1/SC 34 - Document description and processing languages". ISO. Retrieved 2009-12-25.
  3. ^ ISO JTC1/SC34. "JTC 1/SC 34 - Document Description and Processing Languages". Archived from the original on 2014-05-06. Retrieved 2009-12-25.
  4. ^ Grønmo, Geir Ove (March 1997). "DSSSL.KLD - KEDIT Language Definition for DSSSL Specifications". XML Coverpages. OASIS. Retrieved 2015-02-27.
  5. ^ Opera Software. "DSSSL Lite Specification preliminary draft" (PDF). Archived from the original (PDF) on 2016-04-28. Retrieved 2016-03-08.

External links


ISO/IEC JTC 1/SC 34, Document description and processing languages is a subcommittee of the ISO/IEC JTC1 joint technical committee, which is a collaborative effort of both the International Organization for Standardization and the International Electrotechnical Commission, which develops and facilitates standards within the field of document description and processing languages. The international secretariat of ISO/IEC JTC 1/SC 34 is the Japanese Industrial Standards Committee (JISC) located in Japan.

List of International Organization for Standardization standards, 10000-10999

This is a list of published International Organization for Standardization (ISO) standards and other deliverables. For a complete and up-to-date list of all the ISO standards, see the ISO catalogue.The standards are protected by copyright and most of them must be purchased. However, about 300 of the standards produced by ISO and IEC's Joint Technical Committee 1 (JTC1) have been made freely and publicly available.

List of computing and IT abbreviations

This is a list of computing and IT acronyms and abbreviations.

List of stylesheet languages

The following is a list of style sheet languages.

Scheme (programming language)

Scheme is a programming language that supports multiple paradigms, including functional and imperative programming. It is one of the three main dialects of Lisp, alongside Common Lisp and Clojure. Unlike Common Lisp, Scheme follows a minimalist design philosophy, specifying a small standard core with powerful tools for language extension.

Scheme was created during the 1970s at the MIT AI Lab and released by its developers, Guy L. Steele and Gerald Jay Sussman, via a series of memos now known as the Lambda Papers. It was the first dialect of Lisp to choose lexical scope and the first to require implementations to perform tail-call optimization, giving stronger support for functional programming and associated techniques such as recursive algorithms. It was also one of the first programming languages to support first-class continuations. It had a significant influence on the effort that led to the development of Common Lisp.The Scheme language is standardized in the official IEEE standard and a de facto standard called the Revisedn Report on the Algorithmic Language Scheme (RnRS). The most widely implemented standard is R5RS (1998); a new standard, R6RS, was ratified in 2007. Scheme has a diverse user base due to its compactness and elegance, but its minimalist philosophy has also caused wide divergence between practical implementations, so much that the Scheme Steering Committee calls it "the world's most unportable programming language" and "a family of dialects" rather than a single language.

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