anchor.diff:    (top :int)
     (bot :int))
   
  -(define-exported-cfuns ("nl nonl")
  +(define-exported-cfuns ("nl" "nonl")
       :int)
   
   
  
positive.code:     :int
    (win window-ptr))
  
  (define-exported-cfuns ("is_untouched")
      bool
    (win window-ptr))
  
  (define-exported-cfuns ("touchline")
      :int
    (win window-ptr)
    (start :int)
    (count :int))
  
  (define-exported-cfuns ("wtouchln")
      :int
    (win window-ptr)
    (y :int)
    (n :int)
    (changed :int))
  
  (define-exported-cfuns ("is_linetouched")
      bool
  
negative.code:     :string
    (labnum :int))
  
  (define-exported-cfuns ("slk_attron" "slk_attroff" "slk_attrset")
      :int
    (attrs chtype))
  
  