An imperative is a grammatical form that is specialized to elicit a behaviour from the addressee, so imperatives and commands are often taken to be synonymous. However, this identification is not fully correct, because sometimes non-imperative sentences can be used to express a command and, conversely, an imperative can be used for functions other than commands. Still, LIS has grammaticalised forms that are typically associated with commands and these forms are the topic of the present section.