docs refer to "desktop-save", but there's no such command

[Eric Hanchrow]

(info "(emacs)Saving Emacs Sessions") says 

    You can save the desktop manually with the command `M-x
    desktop-save'.

But I typed M-x desktop-save TAB, and was offered only these completions:

    Possible completions are:
    desktop-save-in-desktop-dir        desktop-save-mode

If emacs crashed, and you have the emacs process in the gdb debugger,
please include the output from the following gdb commands:
    `bt full' and `xbacktrace'.
If you would like to further debug the crash, please read the file
/usr/local/src/emacs--multi-tty--0--patch-570/etc/DEBUG for instructions.


In GNU Emacs 22.0.51.1 (i686-pc-linux-gnu, X toolkit, Xaw3d scroll bars, 
multi-tty)
 of 2006-06-16 on debian
Important settings:
  value of $LC_ALL: nil
  value of $LC_COLLATE: nil
  value of $LC_CTYPE: nil
  value of $LC_MESSAGES: nil
  value of $LC_MONETARY: nil
  value of $LC_NUMERIC: nil
  value of $LC_TIME: nil
  value of $LANG: nil
  locale-coding-system: utf-8
  default-enable-multibyte-characters: t

Major mode: Info

Minor modes in effect:
  erc-services-mode: t
  erc-ring-mode: t
  erc-pcomplete-mode: t
  erc-netsplit-mode: t
  erc-button-mode: t
  erc-fill-mode: t
  erc-stamp-mode: t
  erc-list-mode: t
  erc-autojoin-mode: t
  erc-track-mode: t
  erc-match-mode: t
  erc-irccontrols-mode: t
  erc-noncommands-mode: t
  erc-readonly-mode: t
  display-time-mode: t
  shell-dirtrack-mode: t
  iswitchb-mode: t
  mouse-wheel-mode: t
  file-name-shadow-mode: t
  global-font-lock-mode: t
  font-lock-mode: t
  unify-8859-on-encoding-mode: t
  utf-translate-cjk-mode: t
  auto-compression-mode: t
  line-number-mode: t
  transient-mark-mode: t

Recent input:
l u s t r a t e d ESC DEL ESC DEL T i m e SPC o r SPC 
N e w s w e e k RET C-c C-@ C-c C-@ i n k TAB h o p 
e SPC h e ' s SPC O K , SPC w h a t e v e r SPC i t 
SPC i s RET ESC x d e s k TAB s TAB C-g C-h r i d e 
s k t o p RET ESC x r e p o r t TAB b TAB RET

Recent messages:
Scanning `*Group*'
dabbrev-expand: No further dynamic expansion for `vou' found
Scanning `#svn'
Scanning `#scheme'
Scanning `##cooking'
Expansion found in '##cooking'
Mark set [2 times]
Quit
Found `desktop' in Concept Index.  (10 total; use `,' for next)
Loading emacsbug...done

-- 
In the movie Ghostbusters, there's a sign in the background of
one scene that says, "Danger! 10,000 Ohms!" I cannot explain to
laymen why people like me think that is uproariously funny.
        -- Steven den Beste