+ <xs:sequence>
+ <xs:element name="attributeName" type="xs:string" minOccurs="0" maxOccurs="2">
+ <xs:annotation>
+ <xs:documentation>name of feature attribute to colour by, or attribute and sub-attribute</xs:documentation>
+ </xs:annotation>
+ </xs:element>
+ <xs:element name="matcherSet" minOccurs="0" type="jalview:FeatureMatcherSet">
+ <xs:annotation>
+ <xs:documentation>optional filter(s) applied to the feature type</xs:documentation>
+ </xs:annotation>
+ </xs:element>
+ </xs:sequence>