Raf256 <spa### [at] raf256com> wrote in
news:Xns949E8C8524685spamraf256com@203.29.75.35 


errat,

>   box and tunel are covered in X

..in C

> N-th cylinder was translated by <N mod 20, int(N/20)> and rotate by
> 0 or 90*y 

0 or 90*z

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