RELAX NG

• RELAX Core – ISO/IEC DTR 22250-1  - Provides instructions on using the software. Includes related articles and specifications plus examples and links to relevant standard organizations.
• RELAX NG Specification  - Document that represents the consensus of OASIS RELAX NG technical committee. Cites information on the data model, syntaxes and restrictions.
• Tree Regular Expressions for XML  - Merged with RELAX to create RELAX NG that validates XML documents. Shows information on tutorials, specifications and supporting resources.