<type>Attlist</type><name>date</name><comment>The attribute date is used to give a normalized value for a date according to the XSD syntax YYYY-MM-DD or a normalized value for a dateTime according to the XSD syntax YYYY-MM-DDThh:mm:ss(zzzz)</comment>
<xsd:attributeGroup name="date"><xsd:annotation><xsd:documentation><type>Attlist</type><name>date</name><comment>The attribute date is used to give a normalized value for a date according to the XSD syntax YYYY-MM-DD or a normalized value for a dateTime according to the XSD syntax YYYY-MM-DDThh:mm:ss(zzzz)</comment></xsd:documentation></xsd:annotation><xsd:attribute name="date" use="required"><xsd:simpleType><xsd:union><xsd:simpleType><xsd:restriction base="xsd:date"/></xsd:simpleType><xsd:simpleType><xsd:restriction base="xsd:dateTime"/></xsd:simpleType></xsd:union></xsd:simpleType></xsd:attribute></xsd:attributeGroup>