| OBK |
Backup File |
backup file |
| OEB |
Outlook Express Backup Wizard File |
backup file |
| OLD |
Backup File |
backup file |
| ONEPKG |
Microsoft OneNote Package File |
backup file |
| ORI |
Original File |
backup file |
| ORIG |
Original File |
backup file |
| OYX |
Approach Alternate Database Index |
backup file |