XML is based on Standard Generalized Markup Language (SGML), defined in ISO 8879:1986 [ISO Standard].

XML 是基于 Standard Generalized Markup Language（标准通用标记语言，SGML）的，后者由 ISO 8879:1986 [ISO 标准]定义。

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More modern markup languages, such as the Standard Generalized markup language (SGML) and XML, popularized more abstract structural markup such as books, chapters, sections, and so on.

较现代的标记语言，例如Standard Generalized Markup Language (SGML)和XML，则使像书、章、节等这类更为抽象的结构标记更易于为大众理解和接受。

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DocBook was originally a popular Standard Generalized Markup Language (SGML) format for authoring books and documentation, especially those of a more technical nature.

DocBook最初是一种用于编写图书和文档的流行的标准通用标记语言(Standard Generalized Markup Language, sgml)格式，尤其针对技术性图书和文档。

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Berners-Lee defined HTML in SGML, the Standard Generalized Markup Language.

CNN: XML for the absolute beginner