| 11. | .meu | Menu group (DOS Shell) |
| 12. | .mex | Dynamically linked subroutines (Macintosh) (Matlab) ◊ Macro Editor expound file (WordPerfect Library) |
| 13. | .mex4 | Dynamically linked subroutines (Sun-4/SPARC) (Matlab) |
| 14. | .mexds | Dynamically linked subroutines (DECStation) (Matlab) |
| 15. | .mexhp3 | Dynamically linked subroutines (HP9000/series 300) (Matlab) |
| 16. | .mexhp7 | Dynamically linked subroutines (HP9000/series 700) (Matlab) |
| 17. | .mexn | Dynamically linked subroutines (NeXT) (Matlab) |
| 18. | .mexrs6 | Dynamically linked subroutines (IBM RS/6000) (Matlab) |
| 19. | .mexsg | Dynamically linked subroutines (SGI) (Matlab) |