| No. | Extension | Description |
|---|---|---|
| 01 | .doc | Microsoft Word Document |
| 02 | .log | Log File |
| 03 | .msg | Mail Message |
| 04 | .rtf | Rich Text Format File |
| 05 | .txt | Plain Text File |
| 06 | .wpd | WordPerfect Document |
| 07 | .wps | Microsoft Works Word Processor Document Data Files |
| 08 | .123 | Lotus 1-2-3 Spreadshee |
| 09 | .csv | Comma Separated Values File |
| 10 | .dat | Data File |
| 11 | .db | Database File |
| 12 | .dll | Dynamic Link Library |
| 13 | .mdb | Microsoft Access Database |
| 14 | .pps | PowerPoint Slide Show |
| 15 | .ppt | PowerPoint Presentation |
| 16 | .sql | Structured Query Language Data |
| 17 | .wks | Microsoft Works Spreadsheet |
| 18 | .xls | Microsoft Excel Spreadsheet |
| 19 | .xml | XML File |
