(define-key map "<" 'rmail-summary-first-message)
(define-key map ">" 'rmail-summary-last-message)
(define-key map " " 'rmail-summary-scroll-msg-up)
+ (define-key map [?\S-\ ] 'rmail-summary-scroll-msg-down)
(define-key map "\177" 'rmail-summary-scroll-msg-down)
(define-key map "?" 'describe-mode)
(define-key map "\C-c\C-n" 'rmail-summary-next-same-subject)