Regular Language description for XML


REgular LAnguage description for XML is a specification for describing XML-based languages.
A description written in RELAX is called a RELAX grammar.
RELAX Core has been approved as an ISO/IEC Technical Report 22250-1 in 2002. It was developed by ISO/IEC JTC1/SC34.
RELAX was designed by Murata Makoto.
In 2001, an XML schema language RELAX NG was created by unifying of RELAX Core and James Clark's TREX. It was published as ISO/IEC 19757-2 in 2003.