Functional Discourse Grammar, like its predecessor Functional Grammar, is firmly rooted in the functional paradigm, in that it views language first and foremost as a means of communication, and regards the form of language as emerging from its communicative function. Within the functional paradigm, however, FDG takes a moderate stance in that it recognizes that, although shaped by use, and as such subject to constant change, "in synchronic terms the grammar of a language is indeed a system, which must be described and correlated with function in discourse" (Butler 2003: 30). FDG thus "seeks to reconcile the patent fact that languages are structured complexes with the equally patent fact that they are adapted to function as instruments of communication between human beings" (Hengeveld & Mackenzie 2008: ix; cf. Dik 1997a: 3); using Van Valin's (1993) terminology, FDG can be characterized as a 'structural-functional' theory of language.Like all functional approaches, what is at the heart of FDG is the relation between function and form. More specifically, FDG takes a "function-to-form" approach, taking as its input a speaker's communicative intentions, which, through processes of Formulation and Encoding (see below), lead to a specific linguistic form. At the same time, however, FDG is "form-oriented", in that it only seeks to account for those pragmatic and semantic phenomena that are reflected in the morphosyntactic and phonological form of an utterance (e.g. Hengeveld & Mackenzie 2008: 39). Finally, unlike most functional approaches, FDG makes use of a sophisticated formalism to allow for a concise and precise representation of both the functional and the formal properties of languages. Together, these characteristics provide FDG with its unique position in what Butler & Gonzálvez García (2014) describe as "Functional-Cognitive space".
The Architecture of FDG
Distinctive features and overall organizationSo how are these general characteristics reflected in the organization of the model? First of all, the "function-to-form" approach is mirrored in the model's top-down organization, which starts with the speaker's intention and then works its way down to articulation. In this way, "FDG takes the functional approach to language to its logical extreme", as pragmatics is taken to govern semantics, pragmatics and semantics to govern morphosyntax, and pragmatics, semantics, and morphosyntax to govern phonology (Hengeveld & Mackenzie 2008: 13). The privileged role of pragmatics is further reflected in the fact that FDG takes the Discourse Act as