General Purpose Markup Language (Paperback)

High Quality Content by WIKIPEDIA articles A general purpose markup language is a markup language that is used for more than one purpose or situation. Other, more specialized markup languages are often based upon these languages: i.e., HTML being based upon the syntax of SGML. A markup language is a modern system for annotating a text in a way that is syntactically distinguishable from that text. The idea and terminology evolved from the "marking up" of manuscripts, i.e. the revision instructions by editors, traditionally written with a blue pencil on authors' manuscripts. Examples are typesetting instructions such as those found in troff and LaTeX, and structural markers such as XML tags. Markup is typically omitted from the version of the text which is displayed for end-user consumption. Some markup languages, like HTML have presentation semantics, meaning their specification prescribes how the structured data is to be presented, but other markup languages, like XML, have no predefined semantics.