Four-fermion production through resonating boson pairs at LEP2

A Monte Carlo program for the simulation of four-fermion final states at LEP2 is presented. It contains the Feynman diagrams with two resonating W's and Z's and features, among other things, initial and final state radiation, Coulomb singularity effects and effective couplings. It is interfaced to the JETSET package to handle gluon radiation, hadronisation and decays. Its usefulness for experimental studies is stressed. Comparisons with some other calculations show that it is precise enough for most experimental uses.