Glyph name.
Numeric glyph reference in hexadecimal notation, e.g. "#xE000" or "U+E000". N.B. SMuFL version 1.18 uses the range U+E000 - U+ECBF.
<xs:attributeGroup name="mei_att.extsym.attributes"> <xs:attributeGroup ref="mei:mei_att.extsym.attribute.glyphname"/> <xs:attributeGroup ref="mei:mei_att.extsym.attribute.glyphnum"/> </xs:attributeGroup>