I attempted to search for this, because this must have been asked a thousand times before, but I didn't have a lot of luck getting the search to work at the moment. Sometimes, when I drag an object from the toolbox, it stays in the mode of wanting to add more copies of the item that I dragged. I don't know how to shut it off. I've struggled with this before, and after fiddling for a while I finally shake it off, but it seems especially stubborn now. What do I do?