  The shoulder structure of charged particles multiplicity distributions (MD's)
in full phase space in $e^+e^-$ annihilation at the $Z_0$ peak and the
quasi-oscillatory behavior of the ratio of factorial cumulants over factorial
moments, $H_q$, as a function of the order $q$, are quantitatively reproduced
within a simple parametrization of the MD in terms of a weighted superposition
of two Negative Binomial Distributions, associated to two- and multi-jet
production, i.e., to hard gluons radiation.
