ype&gt;

  &lt;!-- file category type --&gt;
  &lt;xs:simpleType name="FileCategoryType"&gt;
    &lt;xs:restriction base="xs:token"&gt;
      &lt;xs:enumeration value="doc" /&gt;
      &lt;xs:enumeration value="header" /&gt;
      &lt;xs:enumeration value="library" /&gt;
      &lt;xs:enumeration value="object" /&gt;
      &lt;xs:enumeration value="source" /&gt;
      &lt;xs:enumeration value="sourceC" /&gt;
      &lt;xs:enumeration value="sourceCpp" /&gt;
      &lt;xs:enumeration value="sourceAsm" /&gt;
   