Rather than simply a record of proceedings (3rd International Conference on Functional Grammar, Amsterdam, June 1988), this volume contains revised and expanded papers from the conference and other papers inspired by the lively discussion there. The volume focuses on the nature of the structures assumed to underlie utterances in natural languages, in two respects. One area is the question of whether to expand the representations accepted in Functional Grammar (FG) in order to capture interpersonal functions, i.e., communication between speaker and hearer in a particular situation and context, to include, for example, aspect, tense, modality and illocutionary force. The second area concerns whether current underlying representation in FG is sufficiently abstract to be the format for the deepest level of human conceptual knowledge storage, as discussed by Simon Dik in a number of recent articles.