It would nice to have a RandN function as seen in MatLab and other languages. Unlinke llFrand(), a llRandN() or if you prefer llNrand(), would produce a random number with a given mean and a given standard deviation from that mean. This would be very useful for generating numbers both above and below a given value with a given distribution. You can use a WHILE loop chained with IF comparisons to do the something similar, but this is inelegant and less precise. The judicious use of this function could make phenomena (e.g. particles) behave more like living things with less math overhead.