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POV-Ray : Newsgroups : povray.documentation.inbuilt : 3.2.1.3.4 : 3.2.1.3.4		Server Time 25 Apr 2024 08:59:52 EDT (-0400)

From: Ken Hutson
Date: 2 Oct 2005 13:30:40
Message: <43401940$1@news.povray.org>

This is incorrect.

abs(A) Absolute value of A. If A is negative, returns -A otherwise returns 
A.