"The Photon typesetting discs contained eight rows with two fonts each, making sixteen fonts altogether. With twelve possible point sizes, that meant one disc had over 17000 characters available at any time. For the Lumitype we put special characters and flying accents on the innermost row, so a disc consisted of fourteen alphabets plus one of of special characters /01/. One had a proper little composing room with fantastic possibilities for setting complicated textsetting and mixing type of any kind. Photosetting brought about far-reaching changes to the printing presses and composing rooms. One typesetting disc replaced many cases full of lead type, which weighed tons, film exposure replaced metal setting" (Osterer & Stamm, Adrian Frutiger - Typefaces: The Complete works, 74).