returns a map where the keys are the rank i of the musical events and the value, the position in beat of the i th event. Called with no arguments, the events considered are all the events in the score. With start, only the events whose position in beats is greater than start are considered. If a stop is specified, all events must have a position between start andstop`.

See also the Antescofo Score @bach_score,   @make_bpm_map,   @make_bpm_tab,   @make_duration_map,   @make_duration_tab,   @make_label_bpm,   @make_label_duration,   @make_label_pitches,   @make_label_pos,   @make_pitch_tab,   @make_score_map   @score_tempi   @score_duration    @specified_duration