on.initialize = function()
	love.graphics.setFont(love.graphics.newFont(20))
	Line_height = math.floor(love.graphics.getFont():getHeight()*1.3)
	Line_number_padding = Line_number_width*App.width('m')
	Menu_left, Menu_top, Safe_width, Safe_height = love.window.getSafeArea()
	Menu_height = 5 + Line_height + 5
	Menu_bottom = Menu_top + Menu_height
	Panes = map(Example_panes, example_pane)
	table.insert(Panes, new_pane())
	Current_pane_index = 1
	Current_pane = Panes[Current_pane_index]
end