title: What is "private output" mode in google colab?
body: <p>I open a notebook and get this banner at the very top of the window:</p>
  
  <blockquote>
    <p>This notebook is open with private outputs. Outputs will not be saved.
    You can disable this in Notebook settings.</p>
  </blockquote>
  
  <p>What does this mean in regards to how I can use the notebook?</p>