OK, it defines a pattern (my mistake!) but “track”? It seems to be two things, the track sound (parameters set to certain positions) that you can copy (hold track button and copy) and ALSO the pattern just within that track and when you copy this one pattern (Fn+Copy in grid mode) it says “copy track”/“paste track” even though you’re just copying the pattern from that track…

If copying in grid mode said “copy track’s pattern” or something it would make sense to me.