void text_load(text_type* ptext, const std::string& file, int kind, int w, int h);
void text_draw(text_type* ptext, const char* text, int x, int y, int shadowsize, int update);
void text_draw_chars(text_type* ptext, texture_type* pchars, const char* text, int x, int y, int update);
-void text_drawf(text_type* ptext, const char* text, int x, int y, int halign, int valign, int shadowsize, int update);
+void text_drawf(text_type* ptext, const char* text, int x, int y, int halign, int valign, int shadowsize, int update = NO_UPDATE);
void text_free(text_type* ptext);
void erasetext(text_type* ptext, const char * text, int x, int y, texture_type * surf, int update, int shadowsize);
void erasecenteredtext(text_type* ptext, const char * text, int y, texture_type * surf, int update, int shadowsize);