title: Jupyter Notebook: enable vertical scrolling in code block
body: <p>How do I enable vertical scrolling in a code block in a jupyter notebook?</p>
  
  <p>I've done it accidentally before, but now I can't reproduce it.  What I found was set <code>autoscroll = true</code> in the file itself using a text editor...</p>
  
  <p>However, I did that... and it already has a setting, <code>"scrolled": true</code>. In the notebook, it has only horizontal scrolling, so I guess that is what the "scrolled" setting modified. </p>