<xs:attribute name="source" type="xs:string"/>
<xs:attribute name="version" type="xs:string"/>
<xs:attribute name="accessionId" type="xs:string"/>
+ <xs:attribute name="locus" type="xs:boolean" default="false">
+ <xs:annotation>
+ <xs:documentation>
+ true for gene locus mapping, source=species, version=assembly, accession=chromosome
+ </xs:documentation>
+ </xs:annotation>
+ </xs:attribute>
</xs:complexType>
</xs:element>
</xs:sequence>