start-stop-single

<xs:simpleType name="start-stop-single">
  <xs:annotation>
    <xs:documentation>The start-stop-single type is used for an attribute of musical elements that can be used for either multi-note or single-note musical elements, as for tremolos.</xs:documentation>
  </xs:annotation>
  <xs:restriction base="xs:token">
    <xs:enumeration value="start"/>
    <xs:enumeration value="stop"/>
    <xs:enumeration value="single"/>
  </xs:restriction>
</xs:simpleType>