title: compare text and highlight difference
body: <p>I have text in two cells with different text. I'm attempting to identify the diff (difference between the text: text that is added or missing) between the two cells.</p>
  
  <p>Example :</p>
  
  <blockquote>
    <p>A1:ThisisasystemgeneratedmentanddoesnotrequiresignatureAnyunauthorizedusedisclosuredisseminationoringofthisdocumentisstrictlyprohibitedandmaybeunlawful</p>
    
    <p>B1:Thisisasystemgenerateddocumentanddoesnotrequiresignatureunauthorizedusedisclosuredisseminationorcopyingofthisdocumentisstrictlyprohibitedandmaybeunful</p>
  </blockquote>
  
  <p>Both cells <code>A1</code> and <code>B1</code> should highlight only textual differences. How do I implement this?</p>