Oh.....right... I've missed the fact that what's after the "VAR" are columns on which arithmetic average are done, which require them to be numeric. btw, how would you write it using a CLASS statement? Thank you
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It simply represents a/b but, since a and b are defined in the previous line they won't be accepted unless they are preceded by the string 'calculated'. Thus 'calculated a' represents 'a that was calculated earlier'.
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