New JES2 functions to help migration
JES2 and JES3 evolved over time by introducing new functions that address the needs of their specific customer sets. As a result, specific statements in job entry control language (JECL) and job control language (JCL) are unique to JES2 or JES3.
This IBM Redbooks publication covers only the JES2 features that are included in z/OS V2.2 and z/OS V2.3 that helped to decrease these differences. For more information ...

Get A Guide to JES3 to JES2 Migration now with O’Reilly online learning.

O’Reilly members experience live online training, plus books, videos, and digital content from 200+ publishers.