Complete correctly: The EXIT clause ends...
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Ia loop unconditionally and continues with the next clause after the loop
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IF var_1 = var_2 THEN var_1 = var_1 + a loop and EXEC unconditionally, but doesn't return to the caller of the EXEC.
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a loop and EXEC unconditionally, returns to the caller of the EXEC and provides a return code.
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a loop and EXEC unconditionally, returns to the caller of the EXEC, but doesn't provide a return code.
The EXIT clause in JCL terminates a loop immediately and transfers control back to the calling EXEC with a return code. This is different from a normal loop exit which would continue with the next statement after the loop. The return code allows the calling program to check if the EXEC completed successfully or encountered a condition that required early termination.
The EXIT clause (as used in REXX/CLIST-style exec processing) unconditionally terminates the current loop and the EXEC itself, passing control back to whatever invoked the EXEC and supplying a return code to that caller. This differs from a plain loop-ending clause (like LEAVE), which only exits the loop and continues within the same program rather than returning to the caller.