simpleType length-with-optional-unit

version
namespace	http://www.w3.org/1998/Math/MathML
type	restriction of xsd:string
properties	base xs:string
used by	attribute {}:mfrac.attlist/@linethickness {}:mstyle.attlist/@linethickness
facets	Kind Value annotation pattern -?([0-9]+|[0-9]*\.[0-9]+)*(em|ex|px|in|cm|mm|pt|pc|%)?
source	<xsd:simpleType name="length-with-optional-unit"> <xsd:restriction base="xs:string"> <xsd:pattern value="-?([0-9]+|[0-9]*\.[0-9]+)*(em|ex|px|in|cm|mm|pt|pc|%)?"> </xsd:pattern> </xsd:restriction> </xsd:simpleType>