3 XSTAR, MOTIF_TOYS, Stars into a gravitational field   ? XStar by Wayne Schlitt, wayne@backbone.UUCP (wayne@cse.unl.edu)     E This program "solves" the n-body problem, and displays the results on E the screen.  It starts by putting a bunch of stars on the screen, and ? then it lets the inter-body gravitational forces move the stars B around.  The result is a lot of neat wandering paths, as the stars interact and collide.   G XStar can be used to animate the root window, as a screen saver or just % to display stuff in a regular window.       