<xs:schema attributeFormDefault="unqualified" elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
  <xs:include schemaLocation="ore_types.xsd"/>  
    <!-- Enum for Return Type -->
    <xs:simpleType name="ReturnEnum">
        <xs:restriction base="xs:string">
            <xs:enumeration value="Log" />
            <xs:enumeration value="Absolute" />
            <xs:enumeration value="Relative" />
        </xs:restriction>
    </xs:simpleType>

    <!-- Reusable type for a Return -->
    <xs:complexType name="ReturnType">
        <xs:sequence>
            <xs:element name="Type" type="ReturnEnum" />
            <xs:element name="Displacement" type="xs:decimal" />
        </xs:sequence>
         <xs:attribute name="key" type="xs:string" use="required" />
    </xs:complexType>

    <!-- Root element -->
    <xs:element name="ReturnConfiguration">
        <xs:complexType>
            <xs:sequence>
                <xs:element name="Return" type="ReturnType" minOccurs="1" maxOccurs="unbounded"/>
            </xs:sequence>
        </xs:complexType>
    </xs:element>
</xs:schema>