template AbsorberBox(25)
  char name
  char shape         ! BOX only !
  int type           ! 1 - central, 2 - forward
  real xlimit(2)     ! xmin,xmax
  real ylimit(2)     ! ymin,ymax
  real xlimit_gap(2) ! inner gap xmin,xmax
  real ylimit_gap(2) ! inner gap ymin,ymax
  real z0
  real zlen
  material material
end template