And use the the following to restrict protocols? <xsd:simpleType name="Protocols"> <xsd:list itemType="Protocol"/> </xsd:simpleType>
<xsd:simpleType name="Protocol"> <xsd:restriction base="xsd:string"> <xsd:enumeration value="HTTP"/> <xsd:enumeration value="HTTPS"/> <xsd:enumeration value="FTP"/> <xsd:enumeration value="SMTP"/> <!-- and so on ... --> </xsd:restriction> </xsd:simpleType>