The extension of drawing proper towards three-dimensionality enhances the impression that we are dealing with things that inhabit a world in between. Spaces come into being in which the artist has escalators, folding ladders, desk ... emerge from the world and has them likewise grow into it and has them remain in a state of flux between the visible and invisible. Sara Heigl, from: Fritz Panzer, the walk-in drawing (cast your art 2010).