title: How to display GNUPLOT keys in multiple lines
body: <p>How can I please display gnuplot titles in multiple lines or even in columns. Indeed I have 8 titles and I juste used this : </p>
  
  <pre><code>set key below
  </code></pre>
  
  <p>So each one is displayed in a seperate line. So the figure becomes congested.</p>