GNU Emacs earlier than version 19.19 does not have a useful outline mode. If you want to use outlines with old versions of emacs, please get the file `outln-18.el' from `ftp.iesd.auc.dk:/pub/emacs-lisp/outln-18.el'. It is a port of the Emacs 19.19 outline mode to Emacs 18 and Lucid Emacs.
AUC TeX supports the standard outline minor mode using LaTeX
sectioning commands as header lines. See section `Outline Mode' in GNU Emacs Manual. By default
outline-minor-mode will use the prefix key C-c which is
also used by AUC TeX, so it is suggested that you choose another
prefix key by inserting
(setq outline-minor-mode-prefix "\C-c\C-o") ; Or whatever...
in your `.emacs' file.
You can add your own headings by setting the variable
TeX-outline-extra.
Each element is a list with two entries. The first entry is the regular expression matching a header, and the second is the level of the header. A `^' is automatically prepended to the regular expressions in the list, so they must match text at the beginning of the line.
See LaTeX-section-list for existing header levels.
The following example add `\item' and `\bibliography' headers, with `\bibliography' at the same outline level as `\section', and `\item' being below `\subparagraph'.
(setq TeX-outline-extra
'(("[ \t]*\\\\\\(bib\\)?item\\b" 7)
("\\\\bibliography\\b" 2)))
You may want to check out the unbundled `out-xtra' package for even better outline support. It is available from your favorite emacs lisp archive.