camera cam1
{
  pixeldim  800 600
  worlddim  8 6
  viewpoint 4 3 3
}

material steelblue
{
   ambient 0  4 6
}

material yellow
{
   ambient  5  4 0
}

plane backwall
{
   material steelblue
   normal 0 0  1
   point  1 0 -4
}