The good old millimetre paper after all... after five days of struggling with the installation of a cool 3D van planning programme. My operating system is too new and after five back-and-forths with the US developers I gave it back. What the heck, I don't need a 3D programme for what I want to put in there. Besides, I somehow feel better when I'm skilfully moving small paper cabinets back and forth instead of clumsily trying to understand the 3D programme.