| 231. | .psid | Postscript image data (text/graphics) (ascii file) |
| 232. | .psion | Sound (Psion a-law audio) |
| 233. | .psm | Music format (Protracker Studio Module) (Protracker - MASI) ◊ Symbol table of IDE (Turbo Pascal) |
| 234. | .psn | Presentation file (Sound Script) |
| 235. | .psp | Bitmap graphics (Paint Shop Pro) ◊ Postscript prepped imposed print file (Scenicsoft Preps) ◊ Procedure (Prodea Synergy) |
| 236. | .psr | Report file (PowerSoft) |
| 237. | .pst | Paste buffer (Lahey Fortran) ◊ Personal Folder File (Microsoft Outlook) ◊ Postbox file (BMail) |
| 238. | .pt | Game crack (Player Tools) ◊ Kodak Precition Color Management System ◊ Sound (Pitch Track) |
| 239. | .pt3 | Device driver (Harvard Graphics 3.0) ◊ Template (PageMaker 3) |
| 240. | .pt4 | Template (PageMaker 4) |
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