When a work station uses a peripheral data set information record (PDIR), the FCB image is defined in the work station. The DD statement FCB fcb-name subparameter must match the FCB name defined in the PDIR work station.

When a work station does not use a PDIR, add an FCB member to SYS1.IMAGELIB. At setup time, JES3 translates the FCB into a set vertical format (SVF).