I know Maple has/had opensource ideas behind it, that's why

interface(verboseproc=3)

print(sum)

allows seing source code for function sum, but what if I want to see the source code for local procedures in Statistics module,

for example

print(Statistics[Distribution])

>proc() local T; try if type(args[1],':-ProbabilityDistribution') then if nargs=1 then return eval(args[1...

I'm trying to create Skewed Normal distribution with the following PDF

I'm using the following command for that (referenced from http://en.wikipedia.org/wiki/Skew_normal_distribution