chapter 1 The State of the Art and How We Got Here t he bu il di ng bl ock s of t y pe e volu t ion a n d au tom at ion monospace d a n d proport ional t y pe t he ch a ngi ng de f i n i t ion of " fon t " t he pos t scr i p t model ou t pu t r e solu t ion a n d t y pe qu al i t y