The Sun Multi-Schema XML Validator (MSV) is a Java technology tool to validate
XML documents against several kinds of XML schemata. It supports RELAX NG,
RELAX Namespace, RELAX Core, TREX, XML DTDs, and a subset of XML Schema Part 1.
This latest (version 1.2) release includes several bug fixes and adds better
conformance to RELAX NG/W3C XML standards and JAXP masquerading.