One type of list is an ordered list.

An ordered list is used to display a list of numbered items. For example, the results of a race: 

 

<html>
 <body>
  Race Results:
  <ol>
   <li>Tortoise</li>
   <li>Snail</li>
   <li>Hare</li>
  </ol>
 </body>
</html>
]]>