zfit                    zfit: Fit Models in a Pipe
zglm                    Run a glm model in a pipe (see 'zlm')
zlm                     Run an lm model in a pipe
zlogit                  Run a logit model in a pipe (see 'zlm')
zprint                  Print the result of a function in a pipe but
                        return original object
zprobit                 Run a probit model in a pipe (see 'zlm')
