Cause . . . . . : Although command processing will continue, your interactive job performance will become poorer if you continue to use a command line to enter a command which shows another display, and then enter another command in the second display, and so on over and over again without returning to the first display. Eventually, this may cause your interactive job to end abnormally. Recovery . . . : To avoid this problem, use the Exit or the Cancel function key to have the command complete processing and return to the original display, before issuing the next command.