| 21. | .wbk | Automatic backup file (Microsoft Word) ◊ Document/workbook (WordPerfect) |
| 22. | .wbl | Upload file (Argo WebLoad II) |
| 23. | .wbmp | Wireless bitmap image file (WAP) |
| 24. | .wbr | WordBar File (Crick Software) |
| 25. | .wbt | Batch file (WinBatch) ◊ Wordbar template (Crick Software) |
| 26. | .wbz | Bitmap graphics (Webshots wallpaper or screensaver) |
| 27. | .wcd | Macro token list (WordPerfect) |
| 28. | .wch | Macro facility file (WordPerfect) |
| 29. | .wcm | Data transmission file (Microsoft Works) ◊ Macro (WordPerfect) |
| 30. | .wcp | Product information description (WordPerfect) |
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