An accidental-mark can be used as a separate notation or as part of an ornament. When used in an ornament, position and placement are relative to the ornament, not relative to the note.
<xs:complexType name="accidental-mark"><xs:annotation><xs:documentation>An accidental-mark can be used as a separate notation or as part of an ornament. When used in an ornament, position and placement are relative to the ornament, not relative to the note.</xs:documentation></xs:annotation><xs:simpleContent><xs:extension base="accidental-text"><xs:attributeGroup ref="print-style"/><xs:attributeGroup ref="placement"/></xs:extension></xs:simpleContent></xs:complexType>