title: Turn multiple lines of code into comments in Jupyter Notebook on Mac and Spanish ISO
body: <p>How do I turn my code into comments in Jupyter Notebook? There are many threads saying that <code>ctrl</code> + <code>/</code> does this, but this doesn't do anything for me.</p>
  
  <p>I am using a Macbook from Latin America. It's running Mac OS High Sierra. My keyboard setup is <code>Spanish ISO</code>.</p>