is no different from a regular register the u201c software u201d register is active and the content 2 of the register 1 is displayed to the user the difference between it and a regular register results from the interaction of the user with the registers 1 as soon as the selector element 3 or the mouse pointer or finger of a user is moved over a register 1 or the sensitive area 11 of a register the device immediately u2014 i e without a mouse click u2014 displays the content 2 of the corresponding register in fig2 for example the selector element configured as a mouse pointer was moved to the sensitive area 11 of the register 2 with the name u201c data u201d this causes the corresponding register 1 to be superimposed and the content 2 of the register to be displayed the active register is however still the register with the name u201c software u201d only the content of the u201c data u201d register is therefore displayed to the user should said user wish to work in the register they must activate it using the selector element 3 as long as the selector element 3 or mouse pointer or finger of the user remains on the interface 5 or the navigation area.