gpx 

GPX is the root element in the XML file.

Element Information

Model

metadata{0,1} , wpt* , rte* , trk* , extensions{0,1}
Children: extensions, metadata, rte, trk, wpt

Attributes

QName Type Fixed Default Use Inheritable Annotation
creator xsd:string required 
You must include the name or URL of the software that created your GPX document.  This allows others to
inform the creator of a GPX instance document that fails to validate.
version xsd:string 1.1 required