pro IDLitopCurveFitting__define
   compile_opt idl2, hidden
    struc = {IDLitopCurveFitting, $
             inherits IDLitOperation, $
             _model: 0, $
             _parameters: DBLARR(6), $
             _sigma: DBLARR(6), $
             _pX: PTR_NEW(), $
             _pY: PTR_NEW(), $
             _pError: PTR_NEW() $
            }

end