| IRAFDIR | Describe IRAF images on specified directory |
| IRAFRD | Read a disk IRAF image file into IDL variables. |
| IRAFWRT | Write IDL image and header to an IRAF (.pix & .imh) file |
| READ_FMR | Read a journal (ApJ, AJ) machine-readable table into IDL |
| WFPC2_READ | Read a Wide Field/Planetary Camera 2 (WFPC2) image |