OpenTracks/doc/opentracks-schema-1.0.xsd

<?xml version="1.0"?>
<xsd:schema xmlns:xsd="http://www.w3.org/2001/XMLSchema"
    targetNamespace="http://opentracksapp.com/xmlschemas/v1">

    <xsd:element name="trackuuid"
        type="xsd:string">
        <xsd:annotation>
            <xsd:documentation xml:lang="en">
                A unique track identifier stored as UUID.
            </xsd:documentation>
        </xsd:annotation>
    </xsd:element>

    <xsd:element name="loss"
        type="xsd:float">
        <xsd:annotation>
            <xsd:documentation xml:lang="en">
                The lost elevation in meters from the previous to the current TrackPoint.
                Only used in GPX.
            </xsd:documentation>
        </xsd:annotation>
    </xsd:element>
    <xsd:element name="gain"
        type="xsd:string">
        <xsd:annotation>
            <xsd:documentation xml:lang="en">
                The gained elevation in meters from the previous to the current TrackPoint.
                Only used in GPX.
            </xsd:documentation>
        </xsd:annotation>
    </xsd:element>
</xsd:schema>