XML in a Nutshell, 3rd Edition

Name

xs:enumeration

Synopsis

<xs:enumeration
  id = "ID"
  value = "anySimpleType">
  <!-- (xs:annotation?) -->
</xs:enumeration>

The xs:enumeration facet element is used inside xs:restriction elements to derive new simple types by listing all valid values. The value attribute contains a single valid value of the type specified by the parent xs:restriction’s base attribute. This xs:restriction element contains one xs:enumeration child element for each valid value.