A magnet arrangement for a magnetic levitation vehicle is described. The present invention relates in particular to novel substituted tetrahydro-1H-pyrazolo3,4-cpyridines having therapeutic activity, which can be used in particular in oncology. A process controller controls a joint storing of items of mail from a stream of mail into storage modules belonging to at least one group and simultaneously controls discharging of jointly deposited items of mail from storage modules belonging to at least one other group. An illumination angle is varied by varying a relative interval between the first optical unit and the second optical unit. The two components can also be provided as a disinfectantsanitizer kit.