DATA PROCESSING DEVICES, NAMELY ELECTRICAL INDUSTRIAL CONTROLLERS, ELECTRONIC INDUSTRIAL CONTROLS FOR OPERATING HEIGHT-ADJUSTABLE SHELVING SYSTEMS AND INDUSTRIAL PROCESS CONTROL SOFTWARE AND COMPUTERS; DIALOG SYSTEM CONSISTING OF COMPUTERS WITH STORAGE MEDIA, NAMELY HARD DISCS AND NON-ERASABLE MEMORY, PROXIMITY-SENSITIVE INPUT DEVICES, NAMELY TOUCH SCREENS AND OPTICAL SCANNERS AND NETWORK INTERFACES BETWEEN A SECOND OR MORE CONTROL UNITS AND/OR HOST SYSTEMS; CONTROL AND ADMINISTRATION SOFTWAR...