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A scanned image, showing off the Lisa's impressive resolution for the time. Atkinson scanned the picture using a modified fax machine. He was always tweaking the half-toning algorithm, which mapped gray scales into patterns of monochrome dots. Atkinson had made versions of these for the Apple II, which the company distributed on demo disks, but these higher-resolution Lisa versions were much more impressive.
The first sketch program, an early ancestor of MacPaint, which allowed mouse-based drawing with patterns and a variety of brush shapes. From early 1980.
Another picture of the first sketch program.