The copy function in Rhino is not always fast–yet ALT dragging a copy is almost instant under any circumstances. For medium to large projects, it often takes seconds to copy, alone. I just copied a surface that took 13 seconds; it can be ALT-drag copied so fast the screen doesn’t even pause.
Is there a way to write a script to drag-copy an object, and then move the object back to its original position? (Effectively making a copy in place.)
Perhaps a [CTRL]+[D] kind of thing?