| Abbreviation | Definition |
|---|---|
| PR3 | Postscript printer driver (dBASE IV) |
| PRC | Rational Rose Processes file |
| PRD | Printer Driver |
| PRE | CMYK image - Stork format Bitmap graphics |
| PRE | Lotus Freelance Presentation file |
| PRE | Programmer's WorkBench Settings |
| PRF | CheckIt Pro 1.0 Data file |
| PRF | dBASE IV Printer driver file |
| PRF | Improces - Fastgraph Pixel Run Format Bitmap graphics |
| PRF | Profiler output |
| PRG | Program (Atari) |
| PRG | Program source (dBASE IV - FoxPro - CA Clipper - dBFast) |
| PRI | Printer definitions (LocoScript) |
| PRJ | Project |
| PRJ | Projection file |
| PRM | Parameters |
| PRN | Lotus or Symphony Text file |
| PRN | Printer driver |
| PRN | PRiNter output file |
| PRO | DOS graphics PROfile file |