When you exit the Rule Definition screen using the END command, Control-M/Analyzer automatically checks the syntax of the definition.
If errors are found, you remain in the Rule Definition screen and an error message is displayed. You may then correct the errors.
If no errors are found, an Exit Option window is displayed.
If you exit the Rule Definition screen using the CANCEL or RESET command, automatic syntax checking is not performed and the Exit Option window is not displayed.