I take information structure as a component of the sentence grammar that was proposed by Lambrecht (1994) as a starting point. In this view, information structure is understood to be a decisive factor in the formal structuring of a sentence. I am presenting the results of research, which shows that word order (WO), or the order of sentence components on the syntactic, as well as on the phonological level, is conditioned by the propositional structure of the sentence. Such a system results in an extremely low number of restrictive rules that, from the point of view of WO, define ungrammatical sentences. This research is a methodological attempt to combine insights from formal and functional approaches to grammatical analysis based on Croatia...