For Vertex Groups (in the Data tab) one can click on the desired group in the little window (for previously created groups of course), then hit the “Select button” and the respective vertices will become selected (and lit up in orange) in the 3D View window, so you can have a visual feedback and know “what the heck you are doing”. But with the UV maps, there’s no such luxury - Unfortunately my mesh won’t help much as every mesh part looks the same (a torus, divided in 3 from top view). I suppose I could always place a little something (shape, number, etc) in 3d right next to the part of the mesh that corresponds to the UV map in question. But I thought of asking in case there’s a more elegant/simple solution. Is there?