| 81. | .pes | Program Editor work space file (WordPerfect Library) |
| 82. | .pet | Program Editor top overflow file (WordPerfect Library) |
| 83. | .pex | Proboard EXecutable program file (Proboard) |
| 84. | .pf | Private File (Aladdin Systems security software) |
| 85. | .pfa | Type 3 font file (unhinted PostScript font) |
| 86. | .pfb | Type 1 PostScript font (Adobe Type Manager) |
| 87. | .pfc | PF Component ◊ Personal Filing Cabinet (AOL) ◊ Text file (First Choice) |
| 88. | .pff | Paraform file for 3D modeling (Scandata) |
| 89. | .pfk | Programmable function keys (XTreePro) |
| 90. | .pfl | Portfolio (Lotus Freelance) |
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