The status of precision calculations for the processes e+e- --> WW --> 4
fermions is reviewed, paying particular attention to questions of gauge
invariance and recent progress concerning photonic radiative corrections.Comment: 16 pages, latex, 4 postscript figures, contribution to the
proceedings of "IVth International Symposium on Radiative Corrections, RADCOR
98", September 1998, Barcelona, Spai
