<element name="RigIdentifier">
<annotation>
<documentation>The unique code or number for a specific rig.</documentation>
</annotation>
<complexType>
<simpleContent>
<extension base="string">
<attribute name="rigIdentifierType" type="string" use="optional">
<annotation>
<documentation>Identifies which rig identifier is being given.</documentation>
</annotation>
</attribute>
</extension>
</simpleContent>
</complexType>
</element>