Until last year Jason, we will call him, because that’s his name, could spend up to 16 hours a day coding on-screen, for days on end, because that’s his job, and that’s as long as he could because by then, he couldn’t see straight anyway. He was also aware the last four hours were always a bit sketchy with increased errors that had to be corrected, but that’s the way it was. But one auspicious day, he received an invitation to Score My Screen and used the Display Screen Optimiser (D.S.O.) …