<xs:simpleType name="SFMatrix4d">
    <xs:annotation>
        <xs:appinfo>SFMatrix4d specifies a 4x4 matrix of double-precision floating point numbers, organized in row-major fashion.</xs:appinfo>
        <xs:documentation source="http://www.web3d.org/x3d/specifications/ISO-IEC-19775-Amendment1-X3DAbstractSpecification/Part01/fieldsDef.html#SFMatrix4d" />
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