 The Problem of Style is to identify representational styles and characterise them. A proposed structural mapping between the model and the target offers an obvious response to this challenge: one can represent a system by coming up with a model that is proposed to be appropriately morphic to it. This delivers the isomorphism-style, the homomorphism-style, the partial-isomorphism style and so on. We can call these “morphism-styles” when referring to them in general. Each of these styles also offers a clear-cut condition of accuracy: the representation is accurate if the hypothesised morphism holds; it is inaccurate if it doesn’t.