density(<distribution>)

The probability density/mass function 
cdf()

The cumulative distribution function 
generate(<distribution>)

Randomly sample values from a distribution 
quantile(<distribution>)

Distribution Quantiles 
likelihood()

The (log) likelihood of a sample matching a distribution 
hilo(<distribution>)

Probability intervals of a probability distribution 
hdr(<distribution>)

Highest density regions of probability distributions 
mean(<distribution>)

Mean of a probability distribution 
median(<distribution>)

Median of a probability distribution 
variance(<distribution>)

Variance of a probability distribution 
skewness()

Skewness of a probability distribution 
kurtosis()

Kurtosis of a probability distribution 