&params
  lat_file = "ramped_small_ring.bmad"         ! Lattice file.
  controller_name = "ramper::*" ! Controller to use.
  input_var = ""                ! Which controller variable to vary? "" -> Vary first var.
  curve_list = "rf::voltage"    ! Which slave functions to plot? "*" -> All slaves.
  curve_min = 0                   ! Range to vary the controller variable over.
  curve_max = 0.6                 ! var_max = var_min for knot type controllers -> autoscale.
  curve_n_var_points = 10             ! Number of variable points. Index runs from 0 to n_var_points.

  z_position_min = -0.5         
  z_position_max = 1.0
  z_position_points = 200

  plot_size = 500, 400          ! Plot window and/or postscript size in points (Nomally 72 points = 1 inch).
  table_file_name = "table.dat" ! Generate a table values? If set to "" (blank) no table is generated.
  make_plot = T                 ! Plot the function(s)? Use False if only a table is wanted.
  draw_knot_points = T          ! Only used when controller uses knots to define the slave functions.
  postscript_file = ""          ! Generate postscript? "" -> No file generated.
/