The CPLEAR experiment at CERN has been designed to measure CP and T vi
olating effects in the neutral kaon system by observing particle-antip
article asymmetries. The motivation and the physics program of CPLEAR
is presented and first analyses of the K0,K0BAR to pi+pi-, pi0pi0 and
pi+pi-pi0 decays are discussed. Special emphasis is given to the recen
t results of the measurement of the CP violating parameters phi+- and
eta+- based on first data taken in 1990/1991.