Quote Originally Posted by d_stranz View Post
Wouldn't that result in just a horizontal row of items? Or is that why you call it "trivial"?
Yes, trivial Since the user is able to move elements arounds (at least that was my impression when reading the thread), she/he can position them as required. One can use some heuristics like when no items have been moved after last addition, add the item below the last added item (then again on the right, etc.). In effect one gets a grid-like behaviour.