-void level_default(st_level* plevel);
-int level_load(st_level* plevel, const char * subset, int level);
-void level_parse(st_level* plevel, lisp_object_t* cursor);
-int level_load(st_level* plevel, const char* filename);
-void level_save(st_level* plevel, const char * subset, int level);
-void level_free(st_level* plevel);
-void level_load_gfx(st_level* plevel);
-void level_free_gfx();
-void level_load_image(texture_type* ptexture, std::string theme, const char * file, int use_alpha);
-void level_change(st_level* plevel, float x, float y, unsigned char c);
-void level_load_song(st_level* plevel);
-void level_free_song(void);