(27)The notion of functionality should be understood to refer to the ways in which the goods can perform their functions having regard to their purpose. The notion of interoperability relates to whether and to what extent the goods are able to function with hardware or software that is different from those with which goods of the same type are normally used. Successful functioning could include, for instance, the ability of the goods to exchange information with such other software or hardware and to use the information exchanged.