cdf(var x): var
Cumulative distribution function; the probability that a normal distributed variable takes a value less than or equal to x.
Can be used to compress the variable to the 0..1 range.
Sometimes also referred to as pnorm(x).
qnorm(var x): var
The inverse cdf function; returns the value whose cumulative distribution matches the probability
x - any var.
x = cdf(1); // x is now 0.84
x = cdf(-1); // x is now 0.16