| OBD | Data | 1 | BINDER70.OBD |
| OBE | Developer | 4 | migrate.obe |
| OBJ | 3D Image | 1 | round.obj |
| OBT | Settings | 1 | Proposal and Marketing Plan.obt |
| OCX | Dynamic Link Library | 90 | ASFCHOP.OCX |
| ODC | Settings | 12 | +Connect to New Data Source.odc |
| ODF | Dynamic Link Library | 9 | officeimm.odf |
| OFT | Data | 2 | MAIL.OFT |
| OLB | Dynamic Link Library | 66 | MSOUTL.OLB |
| OLD | Backup | 12 | DEFAULT.OLD |
| ONE | Data | 24 | ACADEMIC.ONE |
| ONEPKG | Backup | 17 | Notebook11.onepkg |
| ONT | Data | 5 | VenueMapsSchema.ont |
| OPG | Archive | 5 | MSPUB.OPG |
| OPS | Settings | 2 | RESETO11.OPS |
| OPT | CAD | 39 | XR7750DN.OPT |
| ORP | Data | 3 | MsOcrRes.orp |
| OT | Data | 19 | es-ES.PhoneNumber.SMS.ot |
| OUT | Executable Application | 38 | LXAAALG6.OUT |
| OVERRIDETASKS | System | 3 | Microsoft.Common.OverrideTasks |
/共 1 页 
中文 (汉语)