The multiplicity distributions of charged particles in restricted
rapidity intervals in Z0 hadronic decays measured by the DELPHI detector
are presented. The data reveal a shoulder structure, best visible for
intervals of intermediate size, i.e. for rapidity limits around +/- 1.5.
The whole set of distributions including the shoulder structure is
reproduced by the Lund Parton Shower model. The structure is found to be
due to important contributions from 3- and 4-jet events with a hard
gluon jet. A different model, based on the concept of independently
produced groups of particles, “clans”, fluctuating both in number
per event and particle content per clan, has also been used to analyse
the present data. The results show that for each interval of rapidity
the average number of clans per event is approximately the same as at
lower energies