&newton_calibration_controls

      load_starting_model = .true.
      starting_model_name = 'solar_calibration_input.mod'
      
      starting_values_file = 'starting_values.data' ! read this for starting values for alpha, Y, and Z
      ending_values_file = 'ending_values.data' ! write this with final values for alpha, Y, and Z
      
      calibrate_Z = .true.
      
      tol_correction_norm = 1d-4
      tol_max_correction = 1d-4
      max_iter_for_resid_tol1 = 999
      tol_residual_norm1 = 1d-3
      tol_max_residual1 = 1d-3
      min_corr_coeff = 1d-2

      epsder = 1d-4
      
      max_tries = 99
      
      stopping_age = 4.57d9 ! years
      
      target_log_luminosity = 0d0 ! log10(L/Lsun)
      target_log_radius = 0d0 ! log10(R/Rsun)
      target_surface_ZX_ratio = 2.31d-2 ! GS98 value
      !target_surface_ZX_ratio = 1.81d-2 !Asplund 09 value
            
      use_calibration_log = .true.
      calibration_log_file = 'calibration.log'
      
      save_model_tag = '.mod'

/ ! end of newton_calibration_controls
