@listify(map)
returns the range of its argument as a list, i.e. the returned map is obtained by replacing the keys in the arguments by consecutive integers starting from 1.

See also Map (aka dictionnary) @add_pair    @clear    [@clone]    @count    @domain    @find    @gshift_map    @insert    @is_defined    @is_function    @is_map    @listify    @make_duration_map    @make_label_bpm    @make_label_duration    @make_label_pitches    @make_label_pos    @make_score_map    @map    @map_compose    @map_concat    @map_history    @map_history_date    @map_history_rdate    @map_normalize    @map_reverse    @mapval    @max_key    @max_val    @member    @merge    @min_key    @min_val    @occurs    @range    @remove    @select_map    @shift_map