type score = (string (* usually a filename *), score_result) Hashtbl.t
type score_list = (string (* usually a filename *) * score_result) list
val empty_score : unit -> score
type score = (string (* usually a filename *), score_result) Hashtbl.t
type score_list = (string (* usually a filename *) * score_result) list
val empty_score : unit -> score