Demystifying JCL, this book illustrates both major points and subtle aspects with concrete coding examples. It outlines the relationship between JCL and the IBM mainframe, provides instruction for coding JCL, introduces special features, details the management of VSAM files, and describes the use of system tools. Menendez is a programmer/ systems analyst with some 12 years of experince working on IBM mainframes; Lowe is a technical author whose earlier book on MVS JCL is the forerunner of this one. Annotation c. Book News, Inc., Portland, OR (booknews.com)