This appendix contains a full XML stylesheet for PE Data Model.
<xs:simpleType name="IdentName">
<xs:restriction base="xs:string">
<xs:pattern value="_*[a-zA-Z][a-zA-Z0-9_]*"/>
</xs:restriction>
</xs:simpleType>
<xs:simpleType name="IdentNameList">
<xs:list itemType="IdentName"/>
</xs:simpleType>