  (define-function cancel-quit)
  (define-function fill-private-color)
  (define-function flush-display)
  (define-function yield)
  (define-function write-resource)
  (define-function get-resource)
  (define-function label->plain-label)
  (define-function display-origin)
  (define-function display-size)
  (define-function bell)
  (define-function hide-cursor)
  (define-function end-busy-cursor)
  (define-function is-busy?)
  (define-function begin-busy-cursor)
  (define-function get-display-depth)
  (define-function is-color-display?)
  (define-function file-selector)
