  Evolution equations for multiplicities in QCD cascades can, both in the
parton and dipole picture, be used to estimate corrections beyond the formal
accuracy of the modified leading log approximation (MLLA). The differences
between the two pictures, and other uncertainties beyond first order MLLA
corrections, are here investigated in some detail. For example, I discuss how
some colour suppressed corrections, which cannot be determined without better
knowledge of non-perturbative QCD, are related to the question of colour
reconnection. A generalized evolution equation for the dipole cascade is also
presented.
