Mmm I don’t remember why I did this but there was probably a reason. Maybe the simple interwiki who lists physical groups ?
The history of multiple merges is a little bit scary to me and makes hard to fully follow what happened over time.
But sorry, it seem to be my mistake.
Anyway, I don’t really like the habit of subclassifying « group » for anything that could be vaguely seen as a collection, it’s too abstract. A sofware is supposed to be a series hence a group (of executed instruction I guess) … a mathematical class/set is probably supposed to be a group either …
My feeling is that using this item in statements is more a source of confusion than order.