.That means the position of mouse point is just in the selection area.Now you can click and Move mouse to new position.Release up the mouse button,the selection moves to the specified position. If you are working in selection mode,and you have made a selection in current image.Move mouse,when it become .That means the position of mouse point is just in the selection area.Now you can click and Move mouse to new position.Release up the mouse button,the selection moves to the specified position.