A Lisp-like language for teaching programming, noted for its "turtle graphics" used to draw geometric shapes. LOGO was developed in 1966-1968 by a group at Bolt, Beranek & Newman (now "BBN Technologies") headed by Wally Fuerzeig (who still works there in 2003) and including Seymour Papert . There are Logo interpreters for Macintosh, Unix, {IBM PC}, {X Window System}, and many PCs. Implmentations include Berkeley Logo, MswLogo. (2000-03-28)