global_settings {
    radiosity {
      pretrace_start 0.08
      pretrace_end   0.04
      count 35

      nearest_count 10
      error_bound 1.0
      recursion_limit 10

      low_error_factor 0.5
      gray_threshold 0.0
      minimum_reuse 0.015
      brightness 1.1

      adc_bailout 0.01/2
    }
  }