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, at least one of the library functional elements having a plurality of functions and a function placeholder, wherein the test sequence is created by placing at least one instance of a first library functional element in a configuration field, wherein the at least one instance of the first library functional element reference the first library functional element itself, said at least one instance being placed in the configuration field, wherein the function placeholder of the first library functional element provides an individualized instance functionality in the at least one instance such that the at least one instance has a different instance functionality than other instances of he first library functional element, and such that the at least one instance has the plurality of functions of the first library functional element and the individualized instance functionality, and wherein the reference of the at least one instance to the first library functional element is retained even though the function placeholder provide the individualized instance functionality in the at least one instance.