| Abbreviation | Definition |
|---|---|
| PIX | 24bit RGB RLE Alias image file Bitmap graphics |
| PIX | Inset Systems format Bitmap graphics |
| PIXAR | PIXAR picture file Bitmap graphics |
| PJ | Bitmap graphics (HP PaintJet PCL graphics file) |
| PJ | CA-SuperProject Project file |
| PJT | Additional (FPT) project description file (FoxPro) |
| PJT | Project (Visual C++) |
| PJX | Main (DBF) project description file (FoxPro) |
| PJXL | Bitmap graphics (HP PaintJet XL PCL graphics file) |
| PK | TeX DVI driver PacKed bitmap font file |
| PKA | PKArc Compressed file archive |
| PKG | AppleLink Package file |
| PKG | NeXT Installer script |
| PKG | P-CAD Database |
| PKR | PGP Public KeyRing file |
| PKT | Fidonet message Packet file |
| PKT | TeX font Readable contents of .pk file |
| PL | Harvard Graphics Palette |
| PL | Perl script language source code file |
| PL | Prolog language source code file |