class Axis_group_engraver;
class Bar_engraver;
class Bar_req_collect_engraver;
-class Base_span_bar_engraver;
class Beaming_info_list;
class Bezier;
class Bezier_bow;
+class Book;
+class Output_def;
class Break_algorithm;
class Change_iterator;
class Change_translator;
class Font_metric;
class Font_size_engraver;
class Global_context;
+class Grace_fixup;
class Gourlay_breaking;
-class Grace_engraver_group;
class Grace_iterator;
class Grace_music;
-class Grace_performer_group;
class Hara_kiri_engraver;
class Hara_kiri_line_group_engraver;
class Includable_lexer;
class Ligature_bracket_engraver;
class Line_group_engraver_group;
class System;
-class Local_key_item;
class Lookup;
class Lyric_combine_music;
class Lyric_combine_music_iterator;
class Lyric_phrasing_engraver;
class Mensural_ligature_engraver;
class Midi_chunk;
-class Midi_def;
class Midi_duration;
class Midi_dynamic;
class Midi_header;
class Music_iterator;
class Music_list;
class Music_output;
-class Music_output_def;
+class Output_def;
class Music_sequence;
class Music_wrapper;
class Music_wrapper_iterator;
+class Page;
class Pitch;
-class My_lily_lexer;
+class Lily_lexer;
class Note_performer;
class Output_property;
class Paper_book;
class Paper_column;
-class Paper_def;
+class Output_def;
+class Paper_system;
class Paper_outputter;
class Paper_score;
class Paper_stream;
class Event;
class Event_chord;
class Event_chord_iterator;
-class Scaled_font_metric;
+class Modified_font_metric;
class Scheme_hash_table;
class Score;
class Grob;