Variable: gnus-summary-mode-hook
gnus-summary-mode-hook is a variable defined in gnus-sum.el.gz.
Value
(nnmairix-summary-mode-hook)
Documentation
Hook run after entering gnus-summary-mode.
No problems result if this variable is not bound.
add-hook automatically binds it. (This is true for all hook variables.)
Probably introduced at or before Emacs version 19.32.
Source Code
;; Defined in /usr/src/emacs/lisp/gnus/gnus-sum.el.gz