Document Style Semantics and Specification Language
) is a computer language
for specifying stylesheets for SGML
documents, based on a subset of the Scheme programming language
. It is specified by the standard ISO
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.
Although compatible with any SGML, DSSSL is most often used with DocBook.
In parallel with the move from SGML to XML, the Extensible Stylesheet Language (XSL) is gradually replacing DSSSL. However, many of the concepts used in XSL originated with DSSSL.