In your object library you have your objects or backgrounds. Though it would be nice if you could duplicate them to make a whole new object that has no connection to the original. This would be useful for a person who has an object with a lot of coding and animations but have to now make a new level but only have to change one piece of coding. The problem being that if the person adds the object into the new level and remove the camera block. Now the object for this room is fine but in the previous level the camera is now messed up.
Sure you can just make a new object but it would take hours to recreate the coding and animations.