Variable: gnus-cited-closed-text-button-line-format
gnus-cited-closed-text-button-line-format is a customizable variable
defined in gnus-cite.el.gz.
Value
"%(%{[+]%}%)\n"
Documentation
Format of closed cited text buttons.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/gnus-cite.el.gz
(defcustom gnus-cited-closed-text-button-line-format "%(%{[+]%}%)\n"
"Format of closed cited text buttons."
:type 'string)