overflow

<xs:attribute name="overflow" default="scroll">
  <xs:simpleType>
    <xs:restriction base="xs:string">
      <xs:enumeration value="scroll"/>
      <xs:enumeration value="elide"/>
      <xs:enumeration value="truncate"/>
      <xs:enumeration value="scale"/>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>