http://www.w3.org/1999/xhtml
attributeGroup cellvalign

Documentation

      vertical alignment attributes for cell contents
      

Source

<xs:attributeGroup name="cellvalign">
  <xs:attribute name="valign">
    <xs:simpleType>
      <xs:restriction base="xs:token">
        <xs:enumeration value="top"/>
        <xs:enumeration value="middle"/>
        <xs:enumeration value="bottom"/>
        <xs:enumeration value="baseline"/>
      </xs:restriction>
    </xs:simpleType>
  </xs:attribute>
</xs:attributeGroup>