Overview of SGML

• SGML is the Standard Generalized Markup Language (ISO 8879), the international standard for defining descriptions of the structure and content of different types of electronic document. (See the references page.)
• HTML is the HyperText Markup Language (RFC 1866), a specific application of SGML used in the World Wide Web.
• SGML is the `mother tongue'
• HTML is just one of these document types, the one most frequently used in the Web.
• XML is an abbreviated version of SGML