title: How to make a word underline in Markdown
body: <p>How to make a word underline in Markdown?</p>
  
  <p>For example: bold = <code>**bold**</code> or <code>__bold__</code>, italic = <code>*Italic*</code> or <code>_Italic_</code>. </p>
  
  <p>I have tried with 2 and 3 underscores, but it is not working. Also tried by taking the reference of <code>markdown-it.js</code>. </p>