  We characterize the inclusions of weighted classes of entire functions in
terms of the defining weights resp. weight systems. First we treat weights
defined in terms of a so-called associated weight function where the
weight(system) is based on a given sequence. The abstract weight function case
is then reduced to the weight sequence setting by using the so-called
associated weight sequence. As an application of the main statements we
characterize closedness under point-wise multiplication of these classes.
