Variable: bibtex-help-message
bibtex-help-message is a customizable variable defined in
bibtex.el.gz.
Value
t
Documentation
If non-nil print help messages in the echo area on entering a new field.
Probably introduced at or before Emacs version 19.29.
Source Code
;; Defined in /usr/src/emacs/lisp/textmodes/bibtex.el.gz
(defcustom bibtex-help-message t
"If non-nil print help messages in the echo area on entering a new field."
:group 'bibtex
:type 'boolean)