int score_update(const struct osl_row *aft_row, long new_score);
int score_delete(const struct osl_row *aft_row);
int clear_score_table(void);
int score_update(const struct osl_row *aft_row, long new_score);
int score_delete(const struct osl_row *aft_row);
int clear_score_table(void);