<xs:attributeGroup name="wageringAttributes">
    <xs:annotation>
        <xs:documentation>Basic wagering attributes, used in all wagering elements</xs:documentation>
    </xs:annotation>
    <xs:attribute name="bookmaker-key" type="QCodeType" use="optional">
        <xs:annotation>
            <xs:documentation>Unique ID for the make of the line.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="bookmaker-name" type="xs:string" use="optional">
        <xs:annotation>
            <xs:documentation>Name of the maker of the line.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="rotation-key" type="xs:string" use="optional">
        <xs:annotation>
            <xs:documentation>Reusable ID for the team generally agreed upon by a pool of bookmakers.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="comment" type="xs:string" use="optional">
        <xs:annotation>
            <xs:documentation>A comment for this line. Often the same comment is supplied for  both teams in a game.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="date-time" type="TruncatedDateTimeType" use="optional">
        <xs:annotation>
            <xs:documentation>The date and time which this wagering info was assigned by the bookmaker, normalized to ISO 8601 extended format: YYYY-MM-DDTHH:MM:SS+HH:MM. Use YYYY-MM-DD when no time is available.</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="context" use="optional">
        <xs:annotation>
            <xs:documentation>An indication of whether this line is a current line, or a repeat of a special-interest line from the past.</xs:documentation>
        </xs:annotation>
        <xs:simpleType id="context">
            <xs:restriction base="xs:string">
                <xs:enumeration id="contextOpening" value="opening" />
                <xs:enumeration id="contextClosing" value="closing" />
                <xs:enumeration id="contextCurrent" value="current" />
            </xs:restriction>
        </xs:simpleType>
    </xs:attribute>
</xs:attributeGroup>