title: How to do internal links in Google Colab
body: <p>I would like to make a reference list with the sections of my Colab notebook. The notebook is saved in my Google Drive.</p>
  <p>I am trying HTML and Markdown hyperlinks, which work fine if the link is to an HTTP URL, but it is not working for internal Sections in the notebook.</p>
  <p>For example, in a text cell I set the outline:</p>
  <pre><code>1. [Section 1](#s1)
  2. [Section 2](#s2)
  </code></pre>
  <p>and in the destination section:</p>
  <pre><code>&lt;a id='s1'&gt;&lt;/a&gt;
  #Section 1
  
  .....
  
  &lt;a id='s2'&gt;&lt;/a&gt;
  #Section 2
  </code></pre>
  <p>The hyperlink in the list of the outline it is showed as a hyperlink but when I click on it or it does not do anything, or it opens a new tab in the browser with an error message:</p>
  <p><a href="https://i.stack.imgur.com/hOkS5.png" rel="noreferrer"><img src="https://i.stack.imgur.com/hOkS5.png" alt="enter image description here" /></a></p>
  <p>Colab creates its own Content list using the markdown sections and subsections but internal links from one section to another are not possible.</p>