MFDouble

<xs:simpleType name="MFDouble">
  <xs:annotation>
    <xs:appinfo>MFDouble is an array of Double values, i.e. a double-precision floating-point array type. See GeoVRML 1.0 Recommended Practice, Section 2.3, Limitations of Single Precision for rationale. SFDouble/MFDouble are analagous to SFDouble/MFDouble. Array values are optionally separated by commas.</xs:appinfo>
    <xs:documentation source="http://www.web3d.org/documents/specifications/19775-1/V3.3/Part01/fieldsDef.html#SFDoubleAndMFDouble"/>
  </xs:annotation>
  <xs:restriction base="xs:string">
    <xs:whiteSpace value="collapse"/>
    <xs:pattern value="(((\+|\-)?(0|[1-9][0-9]*)?(\.[0-9]*)?((E|e)(\+|\-)?[0-9]+)?)?( )?(,)?( )?)*"/>
  </xs:restriction>
</xs:simpleType>