toggle-save-place
toggle-save-place is an interactive compiled Lisp function in `saveplace.el
'.
(toggle-save-place &optional PARG)
Toggle whether to save your place in this file between sessions.
If this mode is enabled, point is recorded when you kill the buffer
or exit Emacs. Visiting this file again will go to that position,
even in a later Emacs session.
If called with a prefix arg, the mode is enabled if and only if
the argument is positive.
To save places automatically in all files, put this in your init
file:
(setq-default save-place t
)