  During the LEP2 period the e+e- collider increased its center of mass energy
from 161 GeV to 209 GeV and a total integrated luminosity of approximately 700
pb-1 was recorded per experiment. Pairs of W bosons are produced and allow the
study of gauge boson couplings involving W, Z and photon. The coupling of the W
boson to the neutral gauge bosons have been measured and are in agreement with
the Standard Model prediction. Limits are set on CP-violating couplings by a
Spin Density Matrix analysis of the W decay products. No evidence has been
found for couplings of three neutral gauge bosons. Limits are derived on
couplings of four gauge bosons.
