This schema defines Garmin extensions to be used with the GPX 1.1 schema. The root element defined by this schema is intended to be used as a child element of the "extensions" elements in the trkpt element in the GPX 1.1 schema. The GPX 1.1 schema is available at http://www.topografix.com/GPX/1/1/gpx.xsd. This type contains data fields that cannot be represented in GPX 1.1 elements. This element represents a creation time stamp. This type provides the ability to extend any data type that includes it.