This book is about particles in the narrower sense of the word as opposed to the broader meaning covering all uninflected words of a language. In the narrower meaning of the linguistic term particles can be distinguished between logical, or scalar particles and modal, or pragmatic particles. The semantic, pragmatic and syntactic properties of modal particles differ vastly from those of the scalar particles, on the one hand, and their homonymic counterparts functioning in different syntactic categories, on the other hand. The contributions to this volume offer the latest research on the semanti