anchor.diff:    (srcwin window-ptr)
     (dstwin window-ptr))
   
  -;TODO
  -; C-prototype: int copywin(const WINDOW *srcwin, WINDOW *dstwin, int sminrow,
  -;              int smincol, int dminrow, int dmincol, int dmaxrow,
  -;              int dmaxcol, int overlay);
  +;; TODO:
  +;;
  +;; C-prototype: int copywin(const WINDOW *srcwin, WINDOW *dstwin, int sminrow,
  +;;              int smincol, int dminrow, int dmincol, int dmaxrow,
  +;;              int dmaxcol, int overlay);
   
   
   ;; pad
  
positive.code: 
  
  ;; add_wch
  ; TODO
  ; C Prototype: int add_wch( const cchar_t *wch );
  ; C Prototype: int wadd_wch( WINDOW *win, const cchar_t *wch );
  ; C Prototype: int mvadd_wch( int y, int x, const cchar_t *wch );
  ; C Prototype: int mvwadd_wch( WINDOW *win, int y, int x, const cchar_t *wch );
  ; C Prototype: int echo_wchar( const cchar_t *wch );
  ; C Prototype: int wecho_wchar( WINDOW *win, const cchar_t *wch );
  
  
  ;; add_wchstr
  ; TODO
  ; C Prototype: int add_wchstr(const cchar_t *wchstr);
  ; C Prototype: int add_wchnstr(const cchar_t *wchstr, int n);
  ; C Prototype: int wadd_wchstr(WINDOW * win, const cchar_t *wchstr);
  ; C Prototype: int wadd_wchnstr(WINDOW * win, const cchar_t *wchstr, int n);
  ; C Prototype: int mvadd_wchstr(int y, int x, const cchar_t *wchstr);
  ; C Prototype: int mvadd_wchnstr(int y, int x, const cchar_t *wchstr, int n);
  ; C Prototype: int mvwadd_wchstr(WINDOW *win, int y, int x, const cchar_t *wchstr);
  ; C Prototype: int mvwadd_wchnstr(WINDOW *win, int y, int x, const cchar_t *wchstr, int n);
  
  
  ;; addch
  
negative.code: 
  
  ;; constants
  
  ;; Predefined colors
  (define-exported-constant COLOR_BLACK   0)
  (define-exported-constant COLOR_RED     1)
  (define-exported-constant COLOR_GREEN   2)
  