1. A control module for a gas analyzer, a respirator or an anesthesia device for the guided execution of a sequence of operating steps, which require at least partially actuation of operational controls, and wherein the gas analyzer, respirator or anesthesia device comprises a plurality of operational controls comprising: at least one selection signal generator receiving at least one request signal from the control module and consequently outputting at least one selection signal; and at least one activation signal generator generating at least one activation signal in the case of a correct operation of the operational control and for sending the activation signal to the control module and wherein the control module comprises: at least one I/O interface with a graphical user interface on which at least one visual indication of the respective position of the operational control to be operated is outputted, whereby the visual indication comprises a direction indicator, which indicates the respective position of the operational control to be operated relative to the position of the visual indication on the graphical user interface, said graphical user interface comprising a touch screen, said touch screen comprising an input element, said direction indicator being oriented in a direction of one of said input element and an element outside of said touch screen; and a device memory, in which a device operating file is stored, the device operating file comprising at least one sequence of operating steps and means for reading out the sequence of operating steps.