Extensible HyperText Markup Language
The Extensible HyperText Markup Language (XHTML) is a family of current and future document types and modules that reproduce, subset, and extend HTML, reformulated in XML rather than SGML. XHTML family document types are all XML-based, and ultimately are designed to work in conjunction with XML-based user agents. XHTML is the successor of HTML, and a series of specifications has been developed for XHTML.[1]
- Extensible HyperText Markup Language [EN] @ Wikipedia
- Extensible HyperText Markup Language [DE] @ Wikipedia