<!-- 
  Copyright 2001 World Wide Web Consortium, (Massachusetts Institute of Technology, European Research 
  Consortium for Informatics and Mathematics, Keio University). All Rights Reserved. 
  http://www.w3.org/Consortium/Legal/2002/copyright-documents-20021231" 
  
  This schema is copied from http://www.w3.org/2001/xml.xsd.
-->
<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:attribute>

  <xs:attribute name="space">
    <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 source="http://www.w3.org/TR/xmlbase/"></xs:documentation>
    </xs:annotation>
  </xs:attribute>

  <xs:attribute name="id" type="xs:ID">
    <xs:annotation>
      <xs:documentation source="http://www.w3.org/TR/xml-id/"></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>

• base
• id
• lang
• space

• specialAttrs