text: 
  import matplotlib.pyplot as plt
  
  plt.figure(figsize=(3,2))
  ax=plt.axes([0.1, 0.1, 0.8, 0.7])
  an1 = ax.annotate("Test 1", xy=(0.5, 0.5), xycoords="data",
                    va="center", ha="center",
                    bbox=dict(boxstyle="round", fc="w"))
  
  an2 = ax.annotate("Test 2", xy=(0.5, 1.), xycoords=an1,
                    xytext=(0.5,1.1), textcoords=(an1, "axes fraction"),
                    va="bottom", ha="center",
                    bbox=dict(boxstyle="round", fc="w"),
                    arrowprops=dict(arrowstyle="->"))
  plt.show()
  
  