title: Create two blank lines in Markdown
body: <p>I am adding Markdown support to my <a href="http://en.wikipedia.org/wiki/Content_management_system" rel="noreferrer">CMS</a> editor.</p>
  
  <p>When writing Markdown content, how do I create two empty lines?</p>
  
  <p>I have been trying, but I always get only one line.</p>