-(define-key global-map '(meta kp-up) 'backward-sentence)
-(define-key global-map '(meta kp-down) 'forward-sentence)
-(define-key global-map '(meta control kp-up) 'backward-paragraph)
-(define-key global-map '(meta control kp-down) 'forward-paragraph)
+(define-key global-map '(meta kp-up) 'backward-paragraph)
+(define-key global-map '(meta kp-down) 'forward-paragraph)
+(define-key global-map '(meta control kp-left) 'backward-sentence)
+(define-key global-map '(meta control kp-right) 'forward-sentence)
+(define-key global-map '(meta control kp-up) 'scroll-down-one)
+(define-key global-map '(meta control kp-down) 'scroll-up-one)