Got a slightly more sophisticated of nebula.inc posted at.......

http://www.geocities.com/Tokyo/Teahouse/8148/treshall_povstuff.html

example images of the different pattern types are at:

http://www.fortunecity.com/skyscraper/raytrace/755/nebula.html

Quadhall
tre### [at] ww-interlinknet

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