17:  How do I install a piece of Texinfo documentation?
  
  First create Info files from the Texinfo files with the `makeinfo'
  program.  makeinfo is available as part of the latest Texinfo package
  (prep.ai.mit.edu:pub/gnu/texinfo-2.14.tar.Z).                              -
  
  For information about the Texinfo format, read the Texinfo manual which
  comes with Emacs.  This manual also comes installed in Info format, so you
  can read it online.
  
  Neither texinfo-format-buffer nor the makeinfo program install the
  resulting Info files in Emacs's Info tree.  To install Info files:
  
  1. Move the files to the `info' directory in the installed Emacs
     distribution.  See question 4 if you don't know where that
     is.
  
  2. Edit the file info/dir in the installed Emacs distribution, and add a
     line for the top level node in the Info package that you are
     installing.  Follow the examples are already in this file.  The format
     is:
  
       * Topic: (relative-pathname).  Short description of topic.
  
  If you want to install Info files and you don't have the necessary
  privileges, you have several options:
  
  * Info files don't actually need to be installed before being used.  You
    can feed a file name to the Info-goto-node command (invoked by pressing
    "g" in Info mode) by typing the name of the file in parentheses.  This
    goes to the node named `Top' in that file.  For example, to view a Info
    file named `XXX' in your home directory, you can type this:
  
      C-h i g (~/XXX) RET
  
  * You can create your own Info directory.  You can tell Emacs where the
    Info directory is by setting the value of the variable Info-directory
    to its pathname.  For example, to use a private Info directory which
    is a subdirectory of your home directory named `Info', you could do
    this:
  
      (setq Info-directory (expand-file-name "~/Info"))
  
    You will need a top-level Info file named `dir' in this directory.
    You can include the system-wide Info directory in your private Info
    directory with symbolic links or by copying it.
  
  * You can use an enhanced version of lisp/info.el that handles multiple
    Info directories.  Then you can more easily use a mix of private and
    shared Info files.  Dave Gillespie <daveg@synaptics.com,                 +
    daveg@csvax.cs.caltech.edu> has written one such enhancement and I       +
    believe there are others.  Dave's info.el also handles compressed Info   !
    files.                                                                   +
                                                                             +
    Anonymous FTP:                                                           +
      Emacs Lisp Archive: modes/info.el.Z                                    +
      cs.umn.edu:pub/gnu/emacs/info.el.Z                                     +
                                                                             +
    According to Jay Bourland <jayb@math.stanford.edu>, a version of Dave's  +
    info.el comes with `xinfo' (see question 19).                            +