Tom Melly wrote:
> 
> [...]
> 
> Catch-22 (no. 600) Only a person who understands a concept can explain it. Only
> a person who doesn't understand a concept can decide whether the explanation is
> complete.

No, a person not familiar with the details is qualified to decide whether
an explanation is generally understandable but not whether it is
complete.  

The text about inside_vector is surely not the easiest to understand for
the beginner but it is correct and precisely and completely describes how
things work.  Some hints how to choose the inside vector would be useful
probably but not mandatory IMO.

Christoph

-- 
POV-Ray tutorials, IsoWood include,                 
TransSkin and more: http://www.tu-bs.de/~y0013390/  
Last updated 13 Aug. 2002 _____./\/^>_*_<^\/\.______

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