<xs:attributeGroup name="mei_att.staffgroupingsym.attribute.symbol">
<xs:attribute name="symbol">
<xs:annotation>
<xs:documentation>Specifies the symbol used to group a set of staves.</xs:documentation>
</xs:annotation>
<xs:simpleType>
<xs:restriction base="xs:token">
<xs:enumeration value="brace">
<xs:annotation>
<xs:documentation>Curved symbol, i.e., {.</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="bracket">
<xs:annotation>
<xs:documentation>Square symbol, i.e., [, but with curved/angled top and bottom segments.</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="bracketsq">
<xs:annotation>
<xs:documentation>Square symbol, i.e., [, with horizontal top and bottom segments.</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="line">
<xs:annotation>
<xs:documentation>Line symbol, i.e., |, (wide) line without top and bottom curved/horizontal segments.</xs:documentation>
</xs:annotation>
</xs:enumeration>
<xs:enumeration value="none">
<xs:annotation>
<xs:documentation>Grouping symbol missing.</xs:documentation>
</xs:annotation>
</xs:enumeration>
</xs:restriction>
</xs:simpleType>
</xs:attribute>
</xs:attributeGroup> |