bsd man page for swap

SWAP(4) 						     Kernel Interfaces Manual							   SWAP(4)

NAME
       swap - swap device

DESCRIPTION
       This  file refers to the swap device in use by the system.  It should be linked to the special file for the disk or disk partition on which
       the system swaps.  It is used by  programs  that  wish  to  read  from  the  swap  device  without  knowing  its  real  name.   The  script
       /dev/MAKEDEV.local normally is edited by the system builder to set /dev/swap up correctly.

FILES
       /dev/swap
       /dev/MAKEDEV	   script to create special files
       /dev/MAKEDEV.local  script to localize special files

SEE ALSO
       ps(1), w(1)

3rd Berkeley Distribution					 January 28, 1988							   SWAP(4)