title: What do these "\e6##" characters mean?
body: <p><a href="https://www.keysurgical.com/assets/scss/objectsCustom/_icons.scss" rel="noreferrer">https://www.keysurgical.com/assets/scss/objectsCustom/_icons.scss</a></p>
  
  <p>I'm trying to figure out what all these "\e6##" references mean. Is "\e" some sort of special character?</p>
  
  <pre><code>.icon-logo-mark:before {
      content: "\e601";
  }
  .icon-burger:before {
      content: "\e602";
  }
  .icon-arrow-down:before {
      content: "\e603";
  }
  </code></pre>