You can save a picture as a picture and then open it in POTSHOP. When the editor chooses "reverse color" (that is, the opposite choice to filling words), then in the original copybook (such as rubbings), the white background of the font becomes black, and the background color becomes white, not necessarily white, depending on the original black degree! It's backwards anyway! ) My copybooks are all made in this way, saving selenium powder and looking good when printed!