+ (define-key wl-news-mode-map " " 'wl-news-next-page)
+ (define-key wl-news-mode-map "\177" 'wl-news-previous-page)
+ ;; re-bind commands of outline-mode
+ (define-key wl-news-mode-map "n" 'outline-next-visible-heading)
+ (define-key wl-news-mode-map "p" 'outline-previous-visible-heading)
+ (define-key wl-news-mode-map "u" 'outline-up-heading)
+ (define-key wl-news-mode-map "N" 'outline-forward-same-level)
+ (define-key wl-news-mode-map "P" 'outline-backward-same-level))
+
+(require 'derived)
+(define-derived-mode wl-news-mode outline-mode "NEWS"