title: Title over a group of subplots
body: <p>I want a figure with six plots inside; I split it with subplots. For example</p>
  
  <pre><code>for i = 1:12
      subplot(3,4,i)
      plot(peaks)
      title(['Title plot ',num2str(i)])
  end
  </code></pre>
  
  <p>I would like to add two global titles, let's say a global title for the six plots on the left hand side and another title for the six other plots on the right hand side. </p>
  
  <p><a href="https://i.stack.imgur.com/IBpF5.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/IBpF5.png" alt="enter image description here"></a></p>
  
  <p>I don't have <code>2018b</code> version, so I cannot use <code>sgtitle('Subplot Title');</code>. Is it possible use <code>suptitle('my title');</code> somehow?
  I can use <code>text()</code> but resizing the window, the two labels move.</p>