The Natural Native Interface might change in future versions of Natural. Natural versions that provide a modified interface will support previous interface versions in parallel, until a point in time that is determined by Software AG and is announced in time. To access an instance of a specific version of the interface, the application calls the function nni_get_interface. The application passes the required interface version number to the function and receives a structure with function pointers in return. The application may also request the most recent interface version, without specifying the interface version explicitly.