When I do it wrong POV-Ray always tells me that it for example expects a 
string instead of an arry.

Is there a way to check the type of a variable? Is especially interesting 
now arrays can hold different types. Also gives the possibility to declare 
a single instead of declaring a whole array for a single item, when inost 
cases for a macro a single value suffices.

If not, read it as a feature request.
#if (type(Var)=String)
    	...
#end

Ingo

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