This book describes the job control tasks needed to enter jobs into the OS/390 operating system, control the system's processing of jobs, and request the resources needed to run jobs. The book also contains a chapter that describes "started tasks" a
大型机中的JCL reference 英文版 内容: Chapter1 Job control statements Chapter2 Job control task Chapter3 Format of statements Chapter4 Syntax of Parameters ....... 很详细的JCL的入门介绍