title: Embedded Gist Notebook. Can I start it from a specific cell?
body: <p>I have intend to embed a long tutorial notebook on my web page, and using Google colab notebook with Gist seems to do what I need. Almost!</p>
  <p>The tutorial has multiple parts, and I would love for it to not be split up into multiple notebooks on the backend.</p>
  <p>So, is it possible to make my embedded Gist iframe start from a particular cell of the notebook?
  That way I could embed it multiple times, but have it start from different cells in different parts of my website, rather than having multiple distinct notebooks.</p>
  <p>Thanks!</p>