void LoadEngineSnapshotSingle();
void SaveEngineSnapshotSingle();
boolean SaveEngineSnapshotToList();
+void SaveEngineSnapshotToListInitial();
boolean CheckEngineSnapshotSingle();
+boolean CheckEngineSnapshotList();
void CreateGameButtons();
void FreeGameButtons();
-void MapStopPlayButtons();
void MapUndoRedoButtons();
+void UnmapUndoRedoButtons();
void MapGameButtons();
void UnmapGameButtons();
void RedrawGameButtons();