Data sets allow you to create additional groups of points - imagine your main set of points is places you've been to but you'd also like to track places you'd like to travel, a data set can be created for that and viewed seperately.

The points used in data sets are the same normal, you define sets in your config file:

:sets:
  :visited:
    :description: Visited
    :data: travels
  :wishlist:
    :description: Travel Wishlist
    :data: wishlist

This sets up 2 sets with data in config/travels/*.yaml and config/wishlist/*.yaml