<xsd:attribute xmlns:xsd="http://www.w3.org/2001/XMLSchema" name="dt" >
  <xsd:annotation>
    <xsd:documentation>Specifies the data type of custom properties for a document. Used for custom elements defined in the CustomDocumentProperty element of office.xsd.</xsd:documentation>
  </xsd:annotation>
  <xsd:simpleType>
    <xsd:restriction base="xsd:string">
      <xsd:enumeration value="string"/>
    </xsd:restriction>
  </xsd:simpleType>
</xsd:attribute>