It is simply not possible to line up all of these additional production types according to a single feature. In fact, in a systems capability perspective, many of them overlap, just as do some of the different facility layouts already mentioned. Fortunately however, as Figure 3.5.2.1 demonstrates, all of these additional production types can be shown in dependency upon the same characteristic features as in Figure 3.5.1.1, that is, facility layout and product variety concept