Start with a New Window(), including a title in quotes, and then construct display boxes inside the window. Make a reference to the new window by assigning it a variable so that you can send messages to it. When display objects are created or referred to by JSL, they are freely shared references until they are copied into another display box or until you close the window and they disappear. When you plug a display object into another display tree, JMP makes a copy of it that the new box owns.