"Tim Cook" <z99### [at] bellsouthnet> wrote in message 
news:437b1f79$1@news.povray.org...
>
> Ahhhh ok, I just stumbled on the minus sign in confusion, as if you're not 
> paying close attention it looks redundant and as though it returns a 
> negative number.  Isn't there a better way of wording the docs there?
>

Dunno - but IMHO it is a basic, albeit slippery, principle.

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