|  | @@ -12,10 +12,10 @@
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			| 12 | 12 |  
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			| 13 | 13 |  extern SCREEN _ansi_screen;
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			| 14 | 14 |  
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			| 15 |  | -extern void _wputch ( WINDOW *win, chtype ch, int wrap );
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			| 16 |  | -extern void _wputc ( WINDOW *win, char c, int wrap );
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			| 17 |  | -extern void _wputchstr ( WINDOW *win, const chtype *chstr, int wrap, int n );
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			| 18 |  | -extern void _wputstr ( WINDOW *win, const char *str, int wrap, int n );
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			| 19 |  | -extern void _wcursback ( WINDOW *win );
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			|  | 15 | +extern void _wputch ( WINDOW *win, chtype ch, int wrap ) __nonnull;
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			|  | 16 | +extern void _wputc ( WINDOW *win, char c, int wrap ) __nonnull;
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			|  | 17 | +extern void _wputchstr ( WINDOW *win, const chtype *chstr, int wrap, int n ) __nonnull;
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			|  | 18 | +extern void _wputstr ( WINDOW *win, const char *str, int wrap, int n ) __nonnull;
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			|  | 19 | +extern void _wcursback ( WINDOW *win ) __nonnull;
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			| 20 | 20 |  
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			| 21 | 21 |  #endif /* _MUCURSES_H */
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