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Interactive Fan Chart Demo
Please note that this applet requires a Java 1.5 (or higher) Runtime Environment to run correctly! (Get Java
if you don't have it.)
HOW TO USE:
Click on the small circle in the center to expand the chart by one generation.
Click-and-drag a segment into the center to make it the new “root”.
Click on any segment to hide it. Click again to restore it to normal size.