WayPoint和route我理解为是面向应用的，而Track就是基础数据，是物理的记录

看看老外的注释

> a) waypoint

A geopoint with some special tags like name, comment and the like. Usually used to mark special locations as your home, a hotel or a geocache. Huge collections of gas stations, post boxes, shops and the like are called \

> b) track

A collection of geopoints recorded by your GPS device while traveling. A

trackpoint doesn't have a name or comment, but it usually has a timestamp. This distibguishes a trackpoint from a waypoint. > c) route

A collection of waypoints defining the route you want to pass while traveling.