anchor.diff:          ! make sure the dictionary is reset to point to the first variable
           call this%variables_to_force%reset_iterator()
   
  -        ! No iterate through the dictionary as long as there are more elements present
  +        ! Now iterate through the dictionary as long as there are more elements present
           do while (this%variables_to_force%has_more_elements())
               ! get the next variable
               var_to_interpolate = this%variables_to_force%next()
  
positive.code: 
          call create_variables(this, options)
  
          call initialize_variables(this, options)
  
          call setup_meta_data(this, options)
  
  
negative.code:         ! make sure the dictionary is reset to point to the first variable
          call this%variables_to_force%reset_iterator()
  
          ! Now iterate through the dictionary as long as there are more elements present
          do while (this%variables_to_force%has_more_elements())
              ! get the next variable
              var_to_update = this%variables_to_force%next()
  