This volume examines and evaluates principles and practices of plain language that technical content producers can apply to meet their audiences' needs in an ethical way. Applying a new framework to identify situations in which audiences will benefit from plain language, it offers in-depth profiles that show how six organizations produce effective plain-language content. A case study of a European group based in Sweden is included along with results from interviews with plain-language experts around the world. Intended for use in courses in information design, technical and professional communication, and other areas, it is also a crucial resource for practitioners developing plain-language technical content and content strategists in a variety of fields.