| extnor | -- | normal spectrum extraction. |
| idtype | -- | determines data type, 'arc', 'flat' or 'data'. |
| medprf | -- | median collapse of an image. |
| optext | -- | optimal extraction from curved spectra. |
| profit | -- | fits profile to curved spectra. |
| recomp | -- | recomputes fraction file for a new spectrum. |
| regpic | -- | interactive selection of sky/object regions. |
| skew | -- | straightens/tilts a spectrum. |
| skyfit | -- | makes poly fits to the sky background. |
| skymov | -- | moves regions to account for drift along slit. |
| track | -- | measures and fits the spectrum curvature. |