 We often apply terms such as “must”, “ought”, and “can” to actions rather than to states of affairs. For instance, we would say that “Jimmy must tie his shoelaces”, rather than “it is obligatory (for Jimmy) that Jimmy’s shoelaces are tied”. Likewise, we make claims such as “Jack must get the groceries” and “you can turn left here”. In each of these three examples, it seems we signal the deontic status of a certain action— an agent-initiated way of changing the current world, or bringing it into a different state. However, the by now common reading of SDL—deviating from von Wright’s original interpretation (recall  supplement B, von Wright’s 1951a System and SDL),  has it that we can always apply the deontic modals to propositions instead.