saving cookies without remembering to type Q

[jidanni@xxxxxxxxxxx]

How can one save cookies automatically if one never remembers to use

   `Q'
        Save the "arrived URLs" list to disk (*note Tracing History::),
        save cookies (*note Cookie Variables::) and really quit emacs-w3m
        (`w3m-quit').

before exiting emacs?

Must one put w3m-quit in some hook called when exiting emacs? What if
w3m was never started that day? emacs-w3m-version "1.4.263"
P.S., these are not the exact same action that they say they are:
$ grep -n Save\ cookies w3m-cookie.el
417:  "Save cookies."
442:  "Save cookies."
So one of the doctrings should be changed.