RELAX NG is a simple schema language for XML, based on [RELAX] and [TREX]. A RELAX NG schema specifies a pattern for the structure and content of an XML document. A RELAX NG schema thus identifies a class of XML documents consisting of those documents tha

I have recently recommended to a large publishing client that they adopt RELAX NG as the basis of the formal definitions of their content, in preference to W3C XML Schema Definition Language (WXS). There are lots of individual bits of information on why R