<xsd:simpleType name="NtkPortionAccessType"> <xsd:restriction base="xsd:string"> <xsd:pattern value="([!-\]_-\{\}~]+(\|[!-\]_-\{\}~]+^[!-\]_-\{\}~]+)+)(\s[!-\]_-\{\}~]+(\|[!-\]_-\{\}~]+^[!-\]_-\{\}~]+)+)*"/> </xsd:restriction> </xsd:simpleType>