RELAX NG (RELAX Next Generation) is a deliberately simple and straightforward XML markup language for metadocument data, aka schemas, developed in response to the W3C XML Schema standard. Whereas XML Schema has the reputation of being convoluted and verbose, RELAX NG is easy to learn, use, and master. Furthermore, RELAX NG offers both an XML syntax and a compact non-XML syntax, supports XML namespace
RELAX NG is an
Clark's recent work, which centers around RELAX NG, includes:
- Jing, an Open Source validator for RELAX NG
- DTDinst, a toolkit for converting XML DTDs into RELAX NG
- TRANG, a Java program that translates RELAX NG documents into numerous other formats
- An XML mode for GNU Emacs that offers incremental XML parsing and RELAX NG validation capabilities.