| 291. | .swf | Movie (Macromedia Flash Player) |
| 292. | .swg | SWAG Pascal Snippets file (SWAG Reader) |
| 293. | .swp | Document backup (Sprint) ◊ Swap file |
| 294. | .sxp | Process file (3D Studio) |
| 295. | .sy1 | Smartpix symbol library (Ami Pro) |
| 296. | .sy3 | Symbol file (Harvard Graphics 3.x) |
| 297. | .syd | Backup (QEMM - Sysedit) |
| 298. | .syk | SYLK spreadsheet format (Excel) |
| 299. | .sylk | SYLK spreadsheet format (Excel) |
| 300. | .sym | Component symbols (P-CAD) ◊ Graphics symbols (Harvard Graphics 2.0 - Microsoft Windows SDK) ◊ Precompiled headers (Borland C++) ◊ Program symbol table (many compilers and linkers) &#… 0.3 KB |
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