Xerox was very protective of the UI work going on for Star. The Lisa UI papers go into the details of how Apple's UI evolved. From another thread https://scs.h

Xerox was very protective of the UI work going on for Star. The Lisa UI papers go into the details of how Apple's UI evolved. From another thread https://scs.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=25053106-2187-4cde-9981-a9eb002aa4e8 https://scs.hosted.panopto.com/Panopto/Pages/Viewer.aspx?id=... Has Bill's pictures of how the UI evolved and with the exception of some influences after seeing the Star at the intro happened independently. Software on the Alto was a collection of experiments built by computer scientists. The one exception was Tesler's Gypsy system built for Ginn Publishing.