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MODE=LIVE|SIMULATE

Specifies whether the test compression is a simulated execution. When MODE=SIMULATE (or MODE=SIM) is specified, a list of data sets is developed by executing the SCAN, SELECT, and EXCLUDE statements, but the test compression is not executed. Messages and reports are produced as if normal processing were occurring, without the compression percentages and resulting data savings being printed. This is useful in determining how big a TCF run you have without going through the work of doing the test compressions.