This standard defines an XML representation for data that is registered in the SMPTE metadata registers (SMPTE ST 395, SMPTE ST 335, SMPTE ST 2003 and SMPTE ST 400). The standard is applicable for data that can be described by a Reg-XML data model.

The specification defines the items with which a Reg-XML data model is specified, namely classes, properties and types.

The specification defines data mapping rules for representing the data in XML.

The specification defines informative model mapping rules that describe how to map a Reg-XML data model onto W3C XML Schemas (XSDs) for validation.

This specification provides a normative XSD for the representation of Reg-XML data models as Meta Dictionary XML documents.