| 1. | .pr | Bitmap graphics (Sun raster file) |
| 2. | .pr1 | Data file (Packrat 4.0) |
| 3. | .pr2 | Data file (Packrat 4.x) ◊ Presentation (Aldus Persuasion 2.x) ◊ Printer driver (dBASE IV) |
| 4. | .pr3 | Postscript printer driver (dBASE IV) ◊ Presentation (Aldus Persuasion 3.x) |
| 5. | .prc | Processes (Rational Rose) ◊ Resource (text or program) file (3com Palm) |
| 6. | .prd | Printer driver (many) |
| 7. | .pre | Bitmap graphics (CMYK image) (Stork format) ◊ Presentation (Lotus Freelance) ◊ Settings (Programmer's WorkBench - Microsoft C/C++) |
| 8. | .prf | Bitmap graphics (Pixel Run Format) (Improces - Fastgraph) ◊ Data file (CheckIt Pro 1.0) ◊ Printer driver (dBASE IV) ◊ Profiler output ◊ Settings file (Macromedia Director) `… 0.3 KB |
| 9. | .prg | Program (Atari) ◊ Program file (WAVmaker) ◊ Program source (dBASE IV - FoxPro - CA Clipper - dBFast) |
| 10. | .pri | Printer definitions (LocoScript) |
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