void MainMenu(Bar& bar) {
		bar.Add("File", THISBACK(FileMenu));
		bar.Add("Layers", THISBACK(LayersMenu));// this is a sub menu
		...
	// Layers sub-menu
	void LayersMenu(Bar& bar) {
		bar.Add("FAA", THISBACK(FAAMenu));// this is a sub sub menu
		bar.Add("Marble", THISBACK(SetMarble)).Check(marbleX);
		...
		
	// FAA sub-menu
	void FAAMenu(Bar& bar) {
		bar.Add("WAC", THISBACK(Setwac)).Check(wacX);
		bar.Add("WAC sep", THISBACK(WACsepMenu));// this is a sub sub sub menu
		...