  Recently, the moments of multiplicity distributions in e+e- annihilation and
the ratios H_q (cumulant over factorial moments K_q/F_q) have been determined
both for the hadronic final state and for jets at variable resolution. These
ratios show an oscillatory behaviour as function of q with strong dependence of
the amplitude and length of oscillation on the jet resolution parameter
y_{cut}. The recent explanation of this phenomenon based on perturbative QCD
calculations is discussed.
