~~Title: Hypot~~
<evalcmd>
Hypot && double && Hypotenuse of a right-angled triangle. &&
x && double && First input value. &&
y && double && Second input value. &&
[z] && double && Third input value.
</evalcmd>

Computes the square root of the sum of the squares of `x` and `y` (and `z`, if three coordinates are given).