Once you installed the package you have to put something like
(add-to-list ’load-path "/usr/local/share/emacs/site-lisp/plnlfs") (require ’plnlfs)
(you might also put
if ‘pln-extend-and-require’ is available in your system,) in your .emacs file.
You can then start to browse the lfs book version you want. Recall that as an example we will browse version 8.4.
|Apache/2.4.41 (Unix) PHP/7.4.2 SVN/1.13.0|