When I open a paint.net, the pointer is an arrow. (as should be) However when I select a tool and it changes the pointer (as it should), I can then not find a way to change it back to the arrow to continue working on my picture. How do I return the curser to an arrow?. If it says the same as the tool I selected (erase), it will continue to erase instead of doing something else, like move a layer.