With several artists, Marc Kuhn animates a “dialogue without words” and at the DOKUMENTA in Kassel , where german artist JOSEPH BEUYS is the head-attraction, Beuys and Kuhn realize during more than half-an-hour a drawing together, without talking. Like a dialogue one of the both is writing or drawing, then the other answers and so on. At the end of this memorable session, Beuys declares Col-Art an “important art-movement” !