An RPQ was available for the 1401 for compatibility that allowed the system to read or punch the 705 code rather than the standard code. Since not all 1401 users would need this feature it was marketed as an RPQ.
An RPQ was available for the 1401 to ensure compatibility, enabling the system to read or punch the 705 code instead of the standard code. Since not all 1401 users required this feature, it was marketed as an optional request.