<xs:simpleType name="SpecialRemarkOptionType">
    <xs:annotation>
        <xs:documentation xml:lang="en"> Identifies the type of special remark used.</xs:documentation>
    </xs:annotation>
    <xs:restriction base="xs:string">
        <xs:enumeration value="Itinerary">
            <xs:annotation>
                <xs:documentation xml:lang="en"> Remarks apply to the itinerary.</xs:documentation>
            </xs:annotation>
        </xs:enumeration>
        <xs:enumeration value="Invoice">
            <xs:annotation>
                <xs:documentation xml:lang="en"> Remarks apply to the invoice.</xs:documentation>
            </xs:annotation>
        </xs:enumeration>
        <xs:enumeration value="Endorsement">
            <xs:annotation>
                <xs:documentation xml:lang="en"> Remarks apply to the endorsement.</xs:documentation>
            </xs:annotation>
        </xs:enumeration>
        <xs:enumeration value="Save">
            <xs:annotation>
                <xs:documentation xml:lang="en">Remarks which can be deleted by the author only.</xs:documentation>
            </xs:annotation>
        </xs:enumeration>
        <xs:enumeration value="Confidential">
            <xs:annotation>
                <xs:documentation xml:lang="en">Confidential remarks which are visible only to the author and system providers.</xs:documentation>
            </xs:annotation>
        </xs:enumeration>
        <xs:enumeration value="Free">
            <xs:annotation>
                <xs:documentation xml:lang="en">Free text remarks which can be sent to specific airlines.</xs:documentation>
            </xs:annotation>
        </xs:enumeration>
        <xs:enumeration value="GRMS">
            <xs:annotation>
                <xs:documentation xml:lang="en">Remarks from or to a specific group revenue management system (GRMS).</xs:documentation>
            </xs:annotation>
        </xs:enumeration>
        <xs:enumeration value="Split">
            <xs:annotation>
                <xs:documentation xml:lang="en">Remarks containing information about split transaction (Split off PNR address, time, who, etc.).</xs:documentation>
            </xs:annotation>
        </xs:enumeration>
    </xs:restriction>
</xs:simpleType>