JES procs and initialization decks
This chapter describes the differences between the JES3 and JES2 initialization statements. As expected, many of the concepts are similar. However, the way that they are defined to the respective JES is likely to be different. Also, some functions or resources that are in one JES do not exist in the other JES.
Studying your JES2 initialization statements and mapping them to their JES3 equivalent (where possible) provides you with a valuable insight to how many changes you must make when migrating from JES3 to ...

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