Editor_state = nil  -- not used outside editor tests
  assert(#arg <= 1)

    Directory = 'data.'..arg[1]..'/'

  love.window.setVSync(0)  -- remove some delays in exchange for risk of screen tears; we're not a game
  love.keyboard.setTextInput(true)  -- bring up keyboard on touch screen
  love.keyboard.setKeyRepeat(true)
  love.graphics.setBackgroundColor(1,1,1)

  love.window.setVSync(0)  -- remove some delays in exchange for risk of screen tears; we're not a game
  love.keyboard.setTextInput(true)  -- bring up keyboard on touch screen
  love.keyboard.setKeyRepeat(true)
  love.graphics.setBackgroundColor(1,1,1)