13: 2D Hyperbolic Trees data: org charts, web sites node: document link: hyperlink between pages carefully chosen distortion fisheye effect: single focus from hyperbolic geometry [demo: ucjeps.berkeley.edu/map2.html] [The Hyperbolic Browser: A Focus + Context Technique for Visualizing Large Hierarchies. Lamping and Rao, Proc SIGCHI '95. http://citeseer.nj.nec.com/lamping95focuscontext.html] 39