anchor.diff:          n_dir_values = 24
           n_nsq_values = 5
           n_spd_values = 6
  -        
  +
           read_LUT = .False.
           write_LUT = .True.
           u_LUT_Filename = "MISSING"
           v_LUT_Filename = "MISSING"
           LUT_Filename   = "MISSING"
           overwrite_lt_lut = .True.
  -        
  +
           ! read the namelist options
           if (options%use_lt_options) then
               open(io_newunit(name_unit), file=filename)
               read(name_unit,nml=lt_parameters)
               close(name_unit)
           endif
  -        
  +
           ! store everything in the lt_options structure
           lt_options%buffer = buffer
           lt_options%stability_window_size = stability_window_size
  
positive.code:         ! Minimal error checking on option settings
          implicit none
          type(options_type), intent(inout)::options
      
          if (options%t_offset.eq.(-9999)) then
              if (options%warning_level>0) then
                  write(*,*) "WARNING, WARNING, WARNING"
  
negative.code: 
          use_bias_correction=.False.
          bias_options_filename = filename
  
          open(io_newunit(name_unit), file=filename)
          read(name_unit,nml=parameters)
          close(name_unit)
  
          if (trim(forcing_start_date)=="") then
              if (trim(date)/="") then
                  forcing_start_date=date
  