Examining the syntax and semantics of discourse markers, this book employs a syntactic approach to describe discourse markers in Head-Driven Phrase Structure Grammar (HPSG), relevant in a theory of discourse because it provides a framework in which all levels of grammar can be integrated. Since discourse markers operate at discourse level, a well developed discourse theory is required - in this case, Segmented Discourse Representation Theory (SDRT) is adopted. During the course of the book, Minimal Recourse Semantics is explained as it provides an integration of HPSG and SDRT.The approach described is exemplified with an analysis of 'anyway'. This book provides a detailed overview of research on discourse markers covering different areas of linguistics: from a discourse analysis point of view, to a Relevance Theory perspective going through a computational linguistics approach. Containing a precise summary of HPSG and the recently developed SDRT, it will be of great interest to researchers in semantics, pragmatics, grammar and discourse analysis.