<xs:attribute name="score" type="xs:double" use="optional"/>
</xs:complexType>
</xs:element>
+ <xs:element name="sequenceSetProperties" minOccurs="0" maxOccurs="unbounded">
+ <xs:complexType>
+ <xs:attribute name="key" type="xs:string"/>
+ <xs:attribute name="value" type="xs:string"/>
+ </xs:complexType>
+ </xs:element>
</xs:sequence>
<xs:attribute name="gapChar" type="xs:string" use="required"/>
</xs:complexType>