Documentation is available for some of the file formats used within or output from X-GEN. The formats include:
| Environ. | Typical | Binary | Role | Description |
| Variable | Name | or Ascii | of format | |
| AMASK | $WORK/george.ams | Binary | Internal | Detector Active Area |
| CENTROIDS | $WORK/george.cen | Binary | Internal | 3-D Reflection Centroids |
| MULIST | $WORK/george.mu | Ascii | Output | Ascii (h,k,l,F,σ,F+, . . .) |
| MULTIREF | $WORK/george.mrf | Binary | Internal | Integrated, merged refls |
| SCALEIN | $WORK/george.si | Ascii | Internal | Scaling functions for batches of data |
| UDUMP | $WORK/george.udu | Ascii | Appended | Dump of X-GEN binaries |
| UPARAMS | $WORK/george.upr | Binary | Internal | Crystal & Detector Params |
| UREFLS | $WORK/george.urf | Binary | Internal | Integrated intensities |
| USPLINE | $WORK/george.uca | Binary | Internal | Pixel-to-cm conversions |
| WMASK | $WORK/george.wms | Binary | Internal | 3-D Reflection Profiles |
| XLOG | $WORK/george.xls | Ascii | Appended | Logfile |
| XASCA | $WORK/george.asc | Ascii | Output | SCALEPACK output; Friedel-mates separated |
| XCNS | $WORK/george.xcn | Ascii | Output | CNS reflection format |
| XSHEL | $WORK/george.hkl | Ascii | Output | SHELX/XPREP format |
| XXPLOR | $WORK/george.xxp | Ascii | Output | X-PLOR V.3.1 format |
| XSCA | $WORK/george.sca | Ascii | Output | SCALEPACK output; Friedel-mates merged |
Report bugs to Andy Howard at howard@iit.edu or 312-567-5881.