(define-external *mask-constants* masks)
(define-external make-event-mask masks)
(define-external make-pointerevent-mask masks)
(define-external make-deviceevent-mask masks)
(define-external make-keybutmask-mask masks)
(define-external make-keymask-mask masks)
(define-external make-window-value-mask masks)
(define-external make-configure-value-mask masks)
(define-external make-GC-value-mask masks)
(define-external make-color-mask masks)
(define-external make-keyboard-value-mask masks)