graph drawing tool
on.initialize = function(arg)
	if #arg > 0 then
		Filename = arg[1]
	end
	love.window.setTitle('snap.love - '..Filename)
	if Settings[Filename] then
		Viewport = Settings[Filename].viewport
	end
	Viewport.w, Viewport.h = App.screen.size()
	load_graph_from_disk()
	A()
end