1. A configuration device for graphical creation of at least one test sequence for controlling a test device having at least one electronic computer, the test device being controllable according to the created test sequence, the configuration device comprising: at least one display device; and graphical library functional elements displayed with the display device in a library field, wherein the test sequence is created by placing at least one instance of a library functional element in a configuration field, wherein the instance of a library functional element references the library functional element itself, said instance being placed in the configuration field, wherein the graphical library functional element is provided with a function placeholder, the function placeholder, in the instance of the library functional element being provided with an instance functionality, and wherein the reference of the instance of the library functional element to the library functional element is retained.