| COSTAR | Verb to plot a symbol at given position on top of a TV image |
| GSTAR | Task to read a Guide Star (UK) table and create an ST table. |
| IMFLT | fits and removes a background intensity plane from an image |
| STFND | Task to find stars in an image and generate an ST table. |
| STRAN | Task compares ST tables, find image coordinates (e.g. guide star ) |
| TVSTAR | Verb to plot star positions on top of a TV image |
| XTRAN | Create an image with transformed coordinates |