| G10ABF | Fit cubic smoothing spline, smoothing parameter given |
| G10ACF | Fit cubic smoothing spline, smoothing parameter estimated |
| G13CBF | Univariate time series, smoothed sample spectrum using spectral smoothing by the trapezium frequency (Daniell) window |
| G13CDF | Multivariate time series, smoothed sample cross spectrum using spectral smoothing by the trapezium frequency (Daniell) window |