Documentation by Vostell of the environment 'E.d.H.R. Electronic dé-collage Happening Room' from 1968, exhibited in 1982 at the Neue Nationalgalerie in Berlin in the exhibition "Art Becomes Material". The environment consisted of six televisions equipped with additional electric motors that move objects across the floor covered with broken glass. Slides of earlier happenings and works by Vostell were projected onto the walls. According to Vostell, the room contained "Multi-layered mixed layers, superimpositions and events, mobile collages and dé-collages".