| Abbreviation | Definition |
|---|---|
| MWP | SmartMaster (Lotus Word Pro) |
| MX | Common matrix routines (Matlab) |
| MX | Linker information (Modula-3) |
| MX3 | Matlab Dynamically linked subroutines (80386/486 Windows) |
| MXL | Support file (PackRat 5.0) |
| MXT | Data ( MicroSoft C) |
| MYP | Presentation (MM Make Your Point) |
| NAM | Name Space Modules (Novell NetWare) |
| NAP | Vector graphics (Naplps format) (VideoShow - EnerGraphics) |
| NAPLPS | Vector graphics (North American Presentation Layer Protocol Syntax) |
| NB | Text document (Nota Bene) |
| NC | CAMS Instructions for Numerical Control machine |
| NC | GEOS Non-error-Checking pre-processed GOC source code file |
| NC | Unidata NetCDF Graphics file |
| NCB | Microsoft Developer Studio Class Browsing information |
| NCC | Computer Numeric Control control file |
| NCD | Internal tree data (Norton ChangeDirectory) |
| NCM | Nokia Communicator Configuration message |
| NCS | Netscape Conference Call file (Netscape) |
| NCSA | Bitmap graphics (Hierarchical Data File) (NCSA) |