In article <38de35e6@news.povray.org>, "Bill DeWitt" 
<the### [at] earthlinknet> wrote:

> Well they are certainly interesting, but I don't think I see the 
> point.
> What is the difference between this and a regular pattern?

You can define a custom pattern without having to patch the source code. 
You also have more control over waveforms and can more easily mix 
patterns to get the desired result.

-- 
Christopher James Huff - Personal e-mail: chr### [at] yahoocom
TAG(Technical Assistance Group) e-mail: chr### [at] tagpovrayorg
Web page: http://chrishuff.dhs.org/

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