<gpxx:Categories>
<wptx1:Categories>
These contain all your list names that also contain this waypoint. I guess I get it, but does anyone have a use for that? I have 2 issues with it.
- I tend to have a lot of lists and reuse waypoints a lot. It's a ton of extra data in my GPX files that is useless to me and the consumers of my GPX files.
- I do not want to expose all my list names to the public consumers of my exported GPX data.