place

<xs:attribute name="place" default="unspec">
  <xs:simpleType>
    <xs:restriction base="xs:NMTOKEN">
      <xs:enumeration value="side"/>
      <xs:enumeration value="foot"/>
      <xs:enumeration value="end"/>
      <xs:enumeration value="unspec"/>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>