Abstract: A method of information processing in which the sequence of points to be scanned on an original is selected, which sequence is freely selectable in both the coordinate directions. The original is scanned by scanning means producing electrical image signals. The image signals are digitalized. The information of the original is stored in the form of the image signals in the storage location of a memory. For a selected variation of at least part of the stored information the stored information is displayed. The addresses of the storage locations, which are intended to be varied in their information contents, are determined by detecting the coordinates of the part-information to be varied.The contents of the address storage locations is processed in a computer, which is supplied with control commands necessary for the intended variation of the information contents. The processed information is edited in a form suitable for the control of the production of the printing form.