  It was shown that at typical energies and luminosities of an $e^+e^-$ linear
collider one can observe a significant suppression of fluctuations of the
number of gluons in small angular regions. This property of jets is expected in
$e^+e^-$ annihilation as well as in any collision producing high energy quarks
which give rise to the QCD gluon cascade. The reduction of multiplicity
fluctuations was obtained from perturbative QCD using bunching parameters and
then cross checked with a Monte Carlo simulation. The parton-level Monte Carlo
simulation confirms the prediction, while the hadron level illustrates that the
effect survives the hadronization process.
