title: How to display date on a separate line
body: <p><strong>Question</strong>:<br>
  I used the custom date format(e.g., 4/22 11:00), and display these dates on the horizontal axis, however I want to split the date format( 4/22 11:00) into two lines,for instance,</p>
  
  <pre><code>4/22
  11:00
  </code></pre>
  
  <p><strong>Why do I want this</strong><br>
  Date( 4/22 ) and time(11:00) are displayed at the distinct lines, which can easily differentiate date from time.</p>
  
  <p><strong>What did I try</strong><br>
  I found an item "Wrap" in "Alignment", but it can't work.</p>