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The Interactive User Interface (IUI) analyzes and implements Physical Sequential data sets transparently through the Control File, as it does for VSAM. The IUI is able to recognize data sets compressed using SUBSYS and in most cases can return the compression algorithm to the user, skipping analysis and compression and implementing the data set as already compressed.
The Control File Maintenance Utility (CFMU) supports the PST by means of two new Control File record types, PSDSNAME and PSPATTERN, with a number of new keyword parameters on the ADD and ALTER control statements to supply DCB and other information needed to process sequential data sets.
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