orders, such as the Capacity Requirement Planning.
This problem, which can be neglected when
demand is stable (see [3]), cannot be overlooked in
the context we are referring to, where the erraticness
of demand always keeps the production flow
in transient conditions. The separate explosion of
the extra requirements, which allows this problem
to be partially overcome in case of hedging and
option overplanning (see also [13]), is unusable
here since the extra requirements are not explicitly
known. Hence a problem of capacity control arises,
whose management is dealt with in the next subsection