"A hook called when archived.")
(defvar wl-summary-line-inserted-hook nil
"A hook called when summary line is inserted.")
+(defvar wl-summary-insert-headers-hook nil
+ "A hook called when insert header for search header.")
(defvar wl-thread-update-children-number-hook nil
"A hook called when children number is updated.")
(defvar wl-folder-update-access-group-hook nil