>     scale 10 + z * 30

This is equivalent to

scale <10, 10, 10> + <0, 0, 30>

or

scale <10, 10, 40>

>
> Without testing I would assume the following 2 lines will do the same as
> above:
>
>     scale <10,10,10>
>     scale < 1, 1,30>

No, the above is equivalent to

scale <10, 10, 300>

You'll get used to these sort of vector additions with a little practice,
and you'll be able to quickly identify what an expression evaluates to.

 - Slime
 [ http://www.slimeland.com/ ]

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