How can the INFORM LIST be accessed?

Accessing the INFORM LIST requires being in a specific operational state that allows for modification and management of data without interruptions typical of the Operational Mode.

When in Editing or Management mode, the user has the necessary permissions to interact with system parameters meaningfully, including locating the INFORM LIST. The cursor must be correctly positioned to ensure it can access the relevant addresses associated with the INFORM LIST. This situation implies that data management and organizational tasks can be performed effectively while ensuring that any changes or views taken are done in a controlled environment.

The context of this mode includes functionalities that are not present during job execution where the system is primarily focused on performance; thus, accessing supportive lists or databases such as the INFORM LIST wouldn't be practical or allowed. The Main Menu provides a broader range of options but does not directly facilitate access to the INFORM LIST specifically. Hence, the Editing or Management mode is the most appropriate state for accessing this vital list, making it the correct answer.