| Extension | File Description |
| .MXC2 | Data Files |
| .MYI | Data Files |
| .NAM | Data Files |
| .NBE | Data Files |
| .NBK | Data Files |
| .NBP | Data Files |
| .NDB | Data Files |
| .NDK | Data Files |
| .NDX | Data Files |
| .NET | Data Files |
| .NETA | Data Files |
| .NFL | Data Files |
| .NITF | Data Files |
| .NND | Data Files |
| .NNI | Data Files |
| .NNP | Data Files |
| .NNW | Data Files |
| .NOT | Data Files |
| .NOTEBOOK | Data Files |
| .NP | Data Files |
| .NPT | Data Files |
| .NPX | Data Files |
| .NRB | Data Files |
| .NRC | Data Files |
| .NRD | Data Files |
| .NRL | Data Files |
| .NRM | Data Files |
| .NRU | Data Files |
| .NSQ | Data Files |
| .NSR | Data Files |
| .NTF | Data Files |
| .NTX | Data Files |
| .NVL | Data Files |
| .NWP | Data Files |
| .NWS | Data Files |
| .OAB | Data Files |
| .OAS | Data Files |
| .OBD | Data Files |
| .OBJ | Data Files |
| .ODC | Data Files |
| .ODFT | Data Files |
| .ODP | Data Files |
| .OEM | Data Files |
| .OFC | Data Files |
| .OFM | Data Files |
| .OFT | Data Files |
| .OFX | Data Files |
| .OGS | Data Files |
| .OLK | Data Files |
| .OLT | Data Files |
| .OMCS | Data Files |
| .OMDOC | Data Files |
| .OMP | Data Files |
| .OND | Data Files |
| .ONE | Data Files |
| .ONETOC | Data Files |
| .OPF | Data Files |
| .OPRC | Data Files |
| .OPX | Data Files |
| .OR2 | Data Files |
| .OR3 | Data Files |
| .OR4 | Data Files |
| .OR5 | Data Files |
| .OR6 | Data Files |
| .ORG | Data Files |
| .OSFPVG | Data Files |
| .OT | Data Files |
| .OTL | Data Files |
| .OTP | Data Files |
| .OTX | Data Files |
| .OVA | Data Files |
| .P3 | Data Files |
| .PAB | Data Files |
| .PACK | Data Files |
| .PAW | Data Files |
| Extension | File Description |
| .PCAP | Data Files |
| .PCB | Data Files |
| .PCLXL | Data Files |
| .PCR | Data Files |
| .PD4 | Data Files |
| .PD5 | Data Files |
| .PDAS | Data Files |
| .PDD | Data Files |
| .PDFIG | Data Files |
| .PDO | Data Files |
| .PDS | Data Files |
| .PDX | Data Files |
| .PEB | Data Files |
| .PEC | Data Files |
| .PEP | Data Files |
| .PES | Data Files |
| .PEZ | Data Files |
| .PFC | Data Files |
| .PFL | Data Files |
| .PHD | Data Files |
| .PHM | Data Files |
| .PI | Data Files |
| .PJT | Data Files |
| .PJX | Data Files |
| .PKA | Data Files |
| .PKB | Data Files |
| .PKI | Data Files |
| .PKS | Data Files |
| .PKT | Data Files |
| .PLW | Data Files |
| .PMM | Data Files |
| .PMR | Data Files |
| .PNS | Data Files |
| .POD | Data Files |
| .POR | Data Files |
| .POS | Data Files |
| .POST | Data Files |
| .POT | Data Files |
| .POTM | Data Files |
| .POTX | Data Files |
| .PP | Data Files |
| .PPF | Data Files |
| .PPR | Data Files |
| .PPS | Data Files |
| .PPSM | Data Files |
| .PPSX | Data Files |
| .PPT | Data Files |
| .PPTM | Data Files |
| .PPTX | Data Files |
| .PRB | Data Files |
| .PRC | Data Files |
| .PRE | Data Files |
| .PRJ | Data Files |
| .PRO4 | Data Files |
| .PRP | Data Files |
| .PRS | Data Files |
| .PRX | Data Files |
| .PRZ | Data Files |
| .PSA | Data Files |
| .PSF | Data Files |
| .PSKCXML | Data Files |
| .PSM | Data Files |
| .PSPD | Data Files |
| .PST | Data Files |
| .PTB | Data Files |
| .PTF | Data Files |
| .PTK | Data Files |
| .PTN | Data Files |
| .PVL | Data Files |
| .PXA | Data Files |
| .PXC | Data Files |
| .PXF | Data Files |
| .PXJ | Data Files |
| .PXL | Data Files |
| .Q3D | Data Files |
