Variable: gnus-tree-line-format
gnus-tree-line-format is a customizable variable defined in
gnus-salt.el.gz.
Value
"%(%[%3,3n%]%)"
Documentation
Format of tree elements.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/gnus-salt.el.gz
;;;
;;; gnus-tree-mode
;;;
(defcustom gnus-tree-line-format "%(%[%3,3n%]%)"
"Format of tree elements."
:type 'string
:group 'gnus-summary-tree)