18 void ShowGameDifficulty(void);

    18 void ShowGameDifficulty(void);

    19 void ShowPatchesSelection(void);

    19 void ShowPatchesSelection(void);

    20 void DrawArrowButtons(int x, int y, int ctab, byte state, bool clickable_left, bool clickable_right);

    20 void DrawArrowButtons(int x, int y, int ctab, byte state, bool clickable_left, bool clickable_right);

    21 

    21 

    22 /* graph_gui.c */

    22 /* graph_gui.c */

    23 void ShowOperatingProfitGraph(void);

    24 void ShowOperatingProfitGraph(void);

    24 void ShowIncomeGraph(void);

    25 void ShowIncomeGraph(void);

    25 void ShowDeliveredCargoGraph(void);

    26 void ShowDeliveredCargoGraph(void);

    26 void ShowPerformanceHistoryGraph(void);

    27 void ShowPerformanceHistoryGraph(void);

    27 void ShowCompanyValueGraph(void);

    28 void ShowCompanyValueGraph(void);