On the start screen select "Sepia/Monochrome" or "Black and White Binarization."
- Import an image with the "import" button and adjust it with the slider.
- Rotate the image with the "Rotate" button; each press rotates it 90 degrees to the right.
- Save the image with the "save" button.
- Return to the start screen with the "back" button.
Setting the sepia degree to 0 will result in a monochrome image.