0D30A INVALID DISPLAY COMMAND
Cause: The system operator has entered the redisplay command (D) with an invalid operand.
System Action: The cursor is placed under the first character of the invalid operand. The
command is not executed.
Programmer Action: none.
Operator Action: Correct the invalid operand and press ENTER or press CANCEL and reenter
the redisplay command (D) if necessary.
Used with Courtesy and Permission of International Business Machines, Inc.