Description: Now programmers can refresh their memory quickly & easily with this essential desk reference. For the first time in one volume, this easy-to-use guide collects all the information a programmer needs on IBM mainframe software products, programmers' utilities, & computer languages. Organized for fast information retrieval, this invaluable tool includes all the most commonly used codes & messages for mainframe software, along with key words & their usages for all the languages applicable to the most popular mainframe environments-MVS, VM, & VSE. For each of the programs or languages, all commands are briefly discussed with general forms of usage & lots of examples.

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