Digital media are gaining greater significance all the time. In comparison with traditional media this involves changes not only in the reception conditions for users but also in the conceptual and design-related parameters relevant for authors and producers. The present volume discusses design criteria operative in relation to the most important communicative resources employed in the new media. The concept of "design" underlying the discussion is one that refers not only to formal layout but also encompasses conceptual criteria such as user guidance, reception conditions, and functionality.