Variable: ediff-brief-help-message-function
ediff-brief-help-message-function is a buffer-local variable defined
in ediff-help.el.gz.
Documentation
The brief help message that the user can customize.
If the user sets this to a parameter-less function, Ediff will use it to produce the brief help message. This function must return a string.
Source Code
;; Defined in /usr/src/emacs/lisp/vc/ediff-help.el.gz
(ediff-defvar-local ediff-brief-help-message-function nil
"The brief help message that the user can customize.
If the user sets this to a parameter-less function, Ediff will use it to
produce the brief help message. This function must return a string.")