linebreak

<xs:attribute name="linebreak" default="auto">
  <xs:simpleType>
    <xs:restriction base="xs:string">
      <xs:enumeration value="auto"/>
      <xs:enumeration value="newline"/>
      <xs:enumeration value="indentingnewline"/>
      <xs:enumeration value="nobreak"/>
      <xs:enumeration value="goodbreak"/>
      <xs:enumeration value="badbreak"/>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>