1.1. XML
XML is an open-specification, platform-independent, extensible, and increasingly successful profile of the Standard Generalized Markup Language (SGML) [ISO 8879].
The World Wide Web Hypertext Markup Language (HTML) is also a profile of SGML. HTML markup is primarily concerned with the appearance of the material. In addition, HTML can translate some standard types of information into a specific format (appearance) by a particular browser [HTML]. In contrast, XML markup is primarily concerned with the user-extensible structure of the data [XML].
Among the basic goals of XML was to enable the serving, receiving, and processing of general information in a simplified manner on the Web in the same way that has been possible with HTML for display ...
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