This book offers new perspectives into the description of the form, meaning and function of Pragmatic Markers, Discourse Markers and Modal Particles in a number of different languages, along with new methods for identifying their `prototypical' instances in situated language contexts, often based on cross-linguistic comparisons. The papers collected in this volume also discuss different factors at play in processes of grammaticalization and pragmaticalization, which include contact-induced change and pragmatic borrowing, socio-interactional functional pressures and sociopragmatic...