title: Why do some powerpoint presentations have icons that reflect the presentation and some do not
body: <p>I am noticing that some icons of powerpoint have the following standard icon: </p>
  
  <p><img src="https://i.stack.imgur.com/FnDsd.png" alt="enter image description here"></p>
  
  <p>However, I also noticed that some presentations have icons that are an image of the first slide.  Why is that, and what do I need to do in order to add an icon image to my presentation?</p>
  
  <p>Thanks</p>