<?xml version='1.0'?> <!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA 200102//EN" "XMLSchema.dtd" > <xs:schema targetNamespace="http://www.w3.org/XML/1998/namespace" xmlns:xs="http://www.w3.org/2001/XMLSchema" xml:lang="en"> <xs:attribute name="lang" type="xs:language"> <xs:annotation> <xs:documentation>In due course, we should install the relevant ISO 2- and 3-letter codes as the enumerated possible values . . .</xs:documentation> </xs:annotation> </xs:attribute> <xs:attribute name="space" default="preserve"> <xs:simpleType> <xs:restriction base="xs:NCName"> <xs:enumeration value="default"/> <xs:enumeration value="preserve"/> </xs:restriction> </xs:simpleType> </xs:attribute> <xs:attribute name="base" type="xs:anyURI"> <xs:annotation> <xs:documentation>See http://www.w3.org/TR/xmlbase/ for information about this attribute.</xs:documentation> </xs:annotation> </xs:attribute> <xs:attributeGroup name="specialAttrs"> <xs:attribute ref="xml:base"/> <xs:attribute ref="xml:lang"/> <xs:attribute ref="xml:space"/> </xs:attributeGroup> </xs:schema>