.PAB - Personal Address Book - Microsoft (file extension).

.PAK - Quake game data (file extension).

.PAL - Paintbrush palette (filename extension).

.PAS - Pascal program file

.PAT - Pattern - Corel Draw (filename extension).

.PBK - Microsoft Phonebook (filename extension).

.PBM - Portable Bit Map

.PCD - Photo CD format

.PCL - HP LaserJet

.PCM - LaserJet cartridge information

.PCS - PICS animation (file extension).

.PCT - PC Paint

.PCW - PC Write

.PCX - 1. PC Paintbrush   2. Graphics file - Zsoft format

.PDG - PrintShop Deluxe (filename extension).

.PDV - PC Paintbrush printer driver

.PFA - Type 1 font - ASCII

.PFB - Type 1 font - encrypted

.PFM - Postscript Font Metrics; Windows Type 1 font metrics

.PGL - HPGL 7475A plotter - vector graphics

.PGM - Portable Gray Map bitmap (filename extension).

.PHTML - HTML document with preprocessing instructions (PPIs) (file extension).

.PIC - PICT graphics format, or PIXAR picture file

.PICT - Macintosh QuickDraw/PICT This kind of file stores images in QuickDraw vector format. PICT2 can have grayscale bitmapped images also.

.PIF - Program Information File - Windows

.PIT - PackIt - Macintosh compression

.PIX - Inset Systems graphics

.PJX - Project file - Visual FoxPro (filename extension).

.pkg - AppleLink package compression format These files are decodable by StuffIt Expander.

.PL - Perl script (filename extension).

.PLT - Plotter drawing (filename extension).

.PM - PageMaker

.PM3 - PageMaker 3 document

.PM4 - PageMaker 4 document

.PM5 - PageMaker 5 document

.PNG - 1. Portable Network Graphics bitmap (filename extension).
2. Paint Shop Pro Browser (filename extension).

.POV - Persistence Of Vision raytracer (filename extension).

.PPA - PowerPoint Add-in - Microsoft (filename extension).

.PPD - PostScript Printer Description

.PPM - Portable PixelMap (filename extension).

.PPS - PowerPoint Slideshow (filename extension).

.PPT - PowerPoint presentation (filename extension).

.PRD - Printer driver - Microsoft Word, Word Perfect, Microsoft Works (filename extension).

.PRG - A dBASE source code file

.PRJ - Project file

.PRN - (1.) Print file - temporary (2.) XyWrite printer driver (3.) PostScript file

.PRS - WordPerfect printer driver

.PRT - Formatted text

.PS - PostScript. This is a plain text file.

.PSD - Photoshop Document

.PUB - Publication - Ventura Publisher, Microsoft Publisher (file extension).

.PWD - Pocket Word document - Microsoft (filename extension).

.PWZ - Microsoft PowerPoint Wizard (filename extension).