Douglas Engelbart American (1925-2013). Founder of Augmented Research Center (ARC) at non-profit Stanford Research Institute (SRI) in Menlo Park, CA, in 1966. Led team that created multilayered computer collaboration system NLS (oN-Line System). NLS broke ground by combining disparate computational elements, including hypertext links, graphical-user interface (GUI), mouse, information organized by relevance, screen windowing, and presentation programs (like PowerPoint).