DARPA Agent Markup Language
XML has a limited ability to describe the relationships between objects. DAML extends XML by using ontologies - explicit formal specifications of how to represent the objects, concepts and other entities in a particular area of interest, along with the relationships among them.
国防高级研究计划局代理标记语言
XML在描述对象之间关系的能力上有限。国防高级研究计划局代理标记语言(DAML)利用现存的东西——表示特定兴趣范围内的对象、概念和其他实体加上它们之间关系的显性正式规范,扩展XML。
Standard Generalized Markup Language
GML was expanded with additional concepts, such as short references, link processes and concurrent document types, into Standard Generalized Markup Language. SGML was largely unknown until 1990, when Tim Berners-Lee, inventor of the World Wide Web, created Hypertext Markup Language as a subset of SGML. Soon, every type of document and data was being littered with tags at the beginning and end of text elements.
标准规一化标记语言
在归一化标记语言(GML)中增加了诸如短引用、链接进程和并发文档类型等概念,从而扩展成标准规一化标记语言(SGML)。SGML在1990年以前还不太被人知道,当万维网的发明人Tim Berners-Lee创造出SGML的一个子集后不久,各种类型的文档和数据在其文本头尾处都加了标记。