Since the visualization designer cannot always access a piece ofhardware in order to view and test the operating and soft key masks, the latest version 3.3 of the Jetter design tool for ISO-compliant masks - the ISODesigner- now enables simulation directly on screen. The selected format of the operating mask is displayed, giving the user an idea as to how the graphics will look on the display in the future. Events, too, that are initiated via soft keys or even dynamic objects can be simulated and tested. Other functions were implemented in the new version. For example, lines, polylines and polynomials as well as x and y coordinates, which can be directly edited and expanded, are specified as characteristics for the objects. Now, when the user moves the mouse over the mask, the underlying color value of the object is displayed in RGB notation in the status line. Another new feature providing additional convenience is that several images can be selected together and inserted into one mask.