+void FreeEngineSnapshotSingle(void);
+void FreeEngineSnapshotList(void);
+void LoadEngineSnapshotSingle(void);
+void SaveEngineSnapshotSingle(void);
+boolean CheckSaveEngineSnapshotToList(void);
+void SaveEngineSnapshotToList(void);
+void SaveEngineSnapshotToListInitial(void);
+boolean CheckEngineSnapshotSingle(void);
+boolean CheckEngineSnapshotList(void);
+
+void CreateGameButtons(void);
+void FreeGameButtons(void);
+void MapLoadSaveButtons(void);
+void MapUndoRedoButtons(void);
+void ModifyPauseButtons(void);
+void MapGameButtons(void);
+void UnmapGameButtons(void);
+void RedrawGameButtons(void);
+void MapGameButtonsOnTape(void);
+void UnmapGameButtonsOnTape(void);
+void RedrawGameButtonsOnTape(void);
+
+void HandleSoundButtonKeys(Key);