<xs:simpleType name="number-or-normal"><xs:annotation><xs:documentation>The number-or-normal values can be either a decimal number or the string "normal". This is used by the line-height and letter-tracking attributes.</xs:documentation></xs:annotation><xs:union memberTypes="xs:decimal"><xs:simpleType><xs:restriction base="xs:token"><xs:enumeration value="normal"/></xs:restriction></xs:simpleType></xs:union></xs:simpleType>