void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colors);
void inline_display(WINDOW *window, const char *c, const int colors);
void fade_out(WINDOW *window, int trans, int colors, int invert);
void fade_in(WINDOW *window, int trans, int colors, int invert);
int int_length (int val);
void add_line(WINDOW *window, int y, int x, line_t *line, int max_cols, int colors);
void inline_display(WINDOW *window, const char *c, const int colors);
void fade_out(WINDOW *window, int trans, int colors, int invert);
void fade_in(WINDOW *window, int trans, int colors, int invert);
int int_length (int val);