When you select an object by left-clicking, unless you move the object immediately after clicking, a duplicate of the object is made. This is a handy feature—I think it's called "drop copy" (although copying by right-clicking or using the numeric "+" seem to be the only forms of drop copying described in the help file). However, it would be useful to be able to be able to extend the time before a drop copy is made, as often one doesn't move the object immediately after clicking and then inadvertently creates a duplicate. And sometimes one doesn't even know one has made a duplicate this way. Is there a way to change the drop copy setting?