In 1984/5 programmer Don Hopkins sent Richard Stallman a letter labeled "Copyleft—all rights reversed".
He developed and refined pie menus for many platforms and applications including window managers, Emacs, SimCity and The Sims, and published a frequently cited paper about pie menus at CHI'88 with Jack Callahan, Ben Shneiderman and Mark Weiser.
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He is also known for having written a chapter “The X-Windows Disaster” on X Window System in the book The UNIX-HATERS Handbook.
Johns Hopkins University | Don Quixote | Don Giovanni | Don Cherry | Don | Anthony Hopkins | Don (honorific) | Johns Hopkins Hospital | Don Cheadle | Rostov-on-Don | Johns Hopkins | Don Williams | Don Juan | Don Knotts | Don Imus | Don Carlos | Don Rickles | Don Omar | Don Henley | Gerard Manley Hopkins | Bernard Hopkins | Salesians of Don Bosco | Don Johnson | Don Drysdale | Don Pasquale | Don Messick | Don Bluth | Lightnin' Hopkins | Harry Hopkins | Don King (boxing promoter) |