asymcp                  Conditional power computation using asymptotic
                        test.
asymdesign              Boundary and sample size computation using
                        asymptotic test.
asymprob                Boundary crossing probabilities computation
                        using asymptotic test.
exactcp                 Conditional power computation using exact test.
exactdesign             Compute sample size and boundaries using exact
                        binomial distribution
exactprob               Boundary crossing probabilities computation
                        using exact test.
