li>
      </ol>
  
      <p>These are documented in <a href="CSS12-user_prefs.md#font-variations">User Settings and Themes</a>.</p>
  
      <p>To help implementers, a new document specific to <a href="CSS10b-variable_fonts.md">variable fonts</a> has been created. It explains the challenges they’ll encounter, and lists a selection of open source and libre fonts they can embed in their Reading Systems/Apps.</p>
  
      <p>While it’s possible to provide users with a complete selection of variable fonts, 