On Thu, 05 Nov 1998 14:46:31 +0000, Daniel Harris 
	<d.h### [at] netcomcouk> wrote:
>#declare X=0
>#declare Y=0
>#declare Z=0
>#while (X<10)
***     #declare Y=0
>       #while (Y<10)
***            #declare Z=0
>              #while (Z<10)
>                            object { link translate <X*1.75, Y*1.75,
>Z*1.75> }
>                            #declare Z=Z+1
>              #end
>              #declare Y=Y+1
>       #end
>       #declare X=X+1
>#end
>
>Please tell me if there is something blantantly wrong with this or if
>povray doesn't do nested #while statements.

You need to set Y and Z to zero again each time through the outer loops.
(I've added the appropriate lines, marked with stars.)  The way you have 
it written, Z will be 10 after the first pass through the loop, so the 
inner loop will never execute again.  Result: a single line of links.

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