Already existing huge number of pictograms which can be called international picture language is more widelly understood and accepted than any alphabet. Therefore, art group Plan Pet which explores new ways of visual expresion chosed this phenomena as a ground field for their project.

Pictograms combine the visual language of signs with pictures to communicate with the viewer. In some respect they are similar to marks, symbols and simple ilustrations. It is evident that the visual language of pictograms has envolved into a communication system with diverse applications.