(These are links from http://www.contextfreeart.org/ because original site is confusing.)
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Shapes
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Rendering
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Language
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Import directive (probably out-of-date Include directive)
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Tutorials
Some examples: Gallery catalogue, Stage_2 (triangles), Torus, Sponge, From Flight, braintraining, SofterCore, Cover Decay, A Convergence of Paths, Rainbow Swirl/Star, Teardrop Mandala, Organic Style, color spiral 2b, hoop disc revisited, Borg city, crystals, 3d fractal generator, Black Hole Sun, Yin Yang Thing, Tileworks, BNW, City of Horrors, Raymarching, wishedtwist, Riding Off into a Cubist Sunset, Twist and Shout, tentacles, Mandelbrot .