Paul Rubin wrote:
What would be the advantage of that over this?

. x = sqrt(a) + sqrt(b) where:
.     a = 2.0
.     b = 3.0
The idea of "where" is to allow re-using variable names instead of
having to keep track of which ones are in use.  I just tried to give a
very simple example of how you might do that more than once in a
statement.

then I'd write something like this:

x = a + b where:
    a = sqrt(n) where:
        n = 2.
    b = sqrt(n) where:
        n = 3.
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