I'm very happy to have the tip mark, though one thing that tripped me up and might confuse others is that the map example only works if `states` is an array of features. This is in contrast to, e.g., the boilerplate U.S. Plot Map in which `states` is a FeatureCollection. Perhaps a note on that point could be added?

Thanks for the comment! Yes Plot.geo has this “smart” detection of feature and geometry collections, that other marks lack (the issue is not limited to tips: it's the same with dot, text etc.).