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. This download package includes binaries, source code, and detailed documentation. The project is licensed under the BSD license.