title: Pandas indexed dataframe display: use top left empty box
body: <p>Is there a way to put text in the top left box of a dataframe display? Does that field have a name? See below:</p>
  
  <pre><code>import pandas as pd
  raw_data = {'Regiment': ['Nighthawks', 'Raptors'], 
      'Company': ['1st', '2nd'], 
      'preTestScore': [4, 24],
      'postTestScore': [25, 94]}
  pd.DataFrame(raw_data, columns = ['Regiment', 'Company', 'preTestScore', 'postTestScore']).set_index('Regiment')
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/O1t92.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/O1t92.jpg" alt="enter image description here"></a></p>