This chapter describes no additional features of Emacs Lisp. Instead it gives advice on making effective use of the features described in the previous chapters, and describes conventions Emacs Lisp programmers should follow.
You can automatically check some of the conventions described below
by running the command M-x checkdoc RET when visiting a
Lisp file. It cannot check all of the conventions, and not all the
warnings it gives necessarily correspond to problems, but it is worth
examining them all. Alternatively, use the command M-x
checkdoc-current-buffer RET to check the conventions in the
current buffer, or checkdoc-file when you want to check a file
in batch mode, e.g., with a command run by M-x compile RET.