c) If the modified work has interactive user interfaces, each must include a convenient feature that displays an appropriate copyright notice, and tells the user that there is no warranty for the program (or that you provide a warranty), that users may redistribute the modified work under these conditions, and how to view a copy of this License together with the central list (if any) of other terms in accord with section 7. If the interface presents a list of user commands or options, such as a menu, a command to display this information must be prominent in the list. Otherwise, the modified work must display this information at startup--except in the case that the Program has such interactive modes and does not display this information at startup.