- loop
- loop-control
- lp
- lpbb
- lpt
- m-acr
- m-anlz
- m-ecat
- m-gif
- m-intf
- m-inw
- mac
- mac_biba
- mac_bsdextended
- mac_ifoff
- mac_lomac
- mac_mls
- mac_none
- mac_partition
- mac_portacl
- mac_seeotheruids
- mac_stub
- mac_test
- malo
- mcd
- md
- mem
- mem
- meteor
- mfi
- mga
- mgettydefs
- MIFF
- miibus
- mk48txx
- mld
- mlx
- mly
- mmc
- mmcsd
- mmv
- mn
- modesetting
- modulefile
- mod_cc
- mos
- mouse
- MPE
- MPE_Add_RGB_color
- MPE_CaptureFile
- MPE_Close_graphics
- MPE_Comm_global_rank
- MPE_Counter_create
- MPE_Counter_free
- MPE_Counter_nxtval
- MPE_Decomp1d
- MPE_Describe_event
- MPE_Describe_state
- MPE_Draw_circle
- MPE_Draw_line
- MPE_Draw_logic
- MPE_Draw_point
- MPE_Draw_points
- MPE_Draw_string
- MPE_Fill_circle
- MPE_Fill_rectangle
- MPE_Finish_log
- MPE_GetTags
- MPE_Get_mouse_press
- MPE_Iget_mouse_press
MAN (4)
Special files (usually devices, those found in /dev) and drivers