A program flow method in a program component system, comprising a running time system and several components each having one program portion, the method comprising the following steps during the execution of the program portion of a first component: data acquisition by means of the running time system, of data of a second component into the first component independent of program-defined interfaces in the second component; and data disposal by means of the running time system of data of the first component into the second component independent of program-defined interfaces in the second component.