text: An early pioneer of pixel art, her most recognizable works from her time with Apple are the Chicago typeface (the most prominent user interface typeface seen in Classic Mac OS, as well as the typeface used in the first four generations of the Apple iPod interface), the Geneva typeface, the Monaco typeface (co-creator), Clarus the Dogcow, the Happy Mac (the smiling computer that welcomed Mac users when starting their machines for 18 years, until Mac OS X 10.2 replaced it with a gray Apple logo), and the symbol on the Command key on Apple keyboards.