-int text_xprintf(struct Bitmap *bm, uint8_t row, uint8_t col, uint8_t mode, const char *fmt, ...) FORMAT(__printf__, 5, 6);
-uint8_t text_style(uint8_t flags, uint8_t mask);
-void text_clear(struct Bitmap *bm);
+int text_xprintf(struct Bitmap *bm, uint8_t row, uint8_t col, uint16_t mode, const char *fmt, ...) FORMAT(__printf__, 5, 6);
+int text_vwidthf(struct Bitmap *bm, const char * fmt, va_list ap);
+int text_widthf(struct Bitmap *bm, const char * fmt, ...) FORMAT(__printf__, 2, 3);