Method for handling graphically represented data, wherein graphical data are already available in a processing unit, are generated and/or are available as vectors, comprising the following steps: - representing the graphical data with a first resolution on a two-dimensional manifold of a three-dimensional space by means of a representation function; - capturing an input object, namely a property of this input object like shape or size, and the spatial position of this input object in the three-dimensional space by means of a measurement apparatus; - processing the determined data by means of the processing unit; - quantifying the position and/or orientation of this input object by means of a three-dimensional coordinate system, which is chosen so that the two-dimensional manifold lies in one of the coordinate planes of the three-dimensional coordinate system; - determining a three-dimensional gesture of this input object by determining the distance of this input object from the two-dimensional manifold along a backtracking curve between this input object and an intersection point of the backtracking curve on the two-dimensional manifold; - determining a marking point on the two-dimensional manifold in a predefined distance from the intersection point; - displaying the marking point on the two-dimensional manifold, wherein the marking point forms part of a marking area or a marking object, wherein the marking point and/or the marking area and/or the marking object are determined by means of a marking function; and wherein - in the representation of the marking object and/or the marking area in the two-dimensional manifold in addition to the graphical data at least one structural feature of the marking object and/or the marking area depends on properties of this input object, - wherein a change of the shape, size, transparency or reflectivity of this input object causes a change of the structural features of the marking object and/or of the marking area, - wherein the structural feature of the marking object and/or the marking area consists of an element of the following group: pattern, size, color, shape, transparency, and their modulation frequency, modulation rhythm or modulation amplitude. - representing the graphical data with a first resolution on a two-dimensional manifold of a three-dimensional space by means of a representation function; - capturing an input object, namely a property of this input object like shape or size, and the spatial position of this input object in the three-dimensional space by means of a measurement apparatus; - processing the determined data by means of the processing unit; - quantifying the position and/or orientation of this input object by means of a three-dimensional coordinate system, which is chosen so that the two-dimensional manifold lies in one of the coordinate planes of the three-dimensional coordinate system; - determining a three-dimensional gesture of this input object by determining the distance of this input object from the two-dimensional manifold along a backtracking curve between this input object and an intersection point of the backtracking curve on the two-dimensional manifold; - determining a marking point on the two-dimensional manifold in a predefined distance from the intersection point; - displaying the marking point on the two-dimensional manifold, - in the representation of the marking object and/or the marking area in the two-dimensional manifold in addition to the graphical data at least one structural feature of the marking object and/or the marking area depends on properties of this input object, - wherein a change of the shape, size, transparency or reflectivity of this input object causes a change of the structural features of the marking object and/or of the marking area, - wherein the structural feature of the marking object and/or the marking area consists of an element of the following group: pattern, size, color, shape, transparency, and their modulation frequency, modulation rhythm or modulation amplitude.