text: import pyglet
  from pyglet.window import key
  from pyglet.window import mouse
  
  print('pyglet', pyglet.version)
  
  window = pyglet.window.Window()
  
  label = pyglet.text.Label('Hello, world', font_name='zapfino', font_size=36, x=100, y=15)
  
  @window.event
  def on_mouse_press(x, y, button, modifiers):
      if button == mouse.LEFT:
          label.x = x
          label.y = y
  
  @window.event
  def on_mouse_scroll(x, y, dx, dy):
      x += dx
      y += dy
      label.x = x
      label.y = y
  
  @window.event
  def on_draw():
      window.clear()
      label.draw()
  
  pyglet.app.run()