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z/OS MVS JCL Reference
Use the ¬ (NOT) operator to reverse the testing of relational-expressions.
For example, the statements TESTNOTA and TESTNOTB make the same test. The relational expression is true when the return code is between 0 and 8:
The statements TESTNOTC and TESTNOTD make the same test; the relational expression is true when the return code is 0, 1, 2, 3, 4, 5, 6, 7, 9, or 10.
Note that the use of the ¬ operator reverses both the logical and comparison operators.
You do not need to code a blank between the ¬ operator and the expression it is reversing.
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