yeah, and you know why? It was developed on Apple Lisa [] ]'>

http://www.homecomputer.de/pages/f_info.html?Apple_Lisa2_5_Atari.html

click on the picture to see atari logo on lisa

and here is Gary Kildall (Digital Research - GEM) working on apple lisa

http://www.pbs.org/wgbh/theymadeamerica/whomade/images/t_kildall.jpg