W3C released a document labelled XHTML 1.0 in XML Schema, which takes very basic Web language XHTML, puts in a schema and makes it mixable, said Janet Daly, spokeswoman for W3C.
Schemas enable the combining of XML markup languages in a single document, Daly said. A developer, for example, could build a document featuring vector graphics and the XHTML specification, or that features full motion video and electronic catalogue markup language, she said.
The plan provides a practical example of how to take a common language, XHTML 1.0, and turn it into a schema, said Daly.
Although the proposal has not been subjected to the recommendation process and lacks the strength of a WC3 formal endorsement as a recommendation, Daly said the organisation anticipates developers will use the plan.