| boot | -- | bootstrap spectra. |
| clean | -- | clean out cosmic rays. |
| clip | -- | clip pixels from spectra. |
| cset | -- | set regions to a constant. |
| emask | -- | mask bad error values. |
| emul | -- | multiply error bars. |
| fake | -- | fakes a spectrum. |
| fixerr | -- | fix error bars. |
| interp | -- | interpolate over bad pixels. |
| limit | -- | limit range of flux. |
| llig | -- | read light curve as spectra. |
| mask | -- | apply mask to spectra. |
| patch | -- | patch spectrum with cursor. |