<pre>
> set x=<2 + 4>
> set y=<$(x) x 10>
> echo "x x y = " <$(x) x $(y)>
x x y = 360


> set x=4
> set y=2
> set z=<($(x) + $(y)) x 10>
> echo "z = $(z)"
z = 60


> set x=10 z=20
> set q=<$(x) LT $(z)>
> echo "q = $(q)"
q = 1
</pre>