App.screen.width = 40*App.width(App.newText(love.graphics.getFont(), 'm'))

      App.screen.width = 40*App.width('m')

end
-- use this sparingly
function to_text(s)
  if Text_cache[s] == nil then
    Text_cache[s] = App.newText(love.graphics.getFont(), s)
  end
  return Text_cache[s]