the book attempts to provide a programmer with an easy introduction to the osf/motif graphical user interface (gui). it is organized as a series of tutorials, each of which builds upon the previous. it starts at the level of what is a widget?, and builds to the level of user-defined resource types. along the way, most of the major elements of motif are presented, with sample programs that illustrate their use. the target reader is an experienced c programmer and user of the x window system, under the unix operating system. the reader should be familiar with the tools provided by unix for the compilation and testing programs; while this book does examine the process by which a motif program is compiled, it does not explain that process. it also assumes that the reader is familiar with x terms such as pointer and display. the author has written his book so that the reader can use either motif version 1.0 or 1.1.