An ordered list is made out of <ol> and </ol> tags. The letter O stands for "ordered" and the letter L stands for "list".
<body>
<ol>
</ol>
</body>
To add a list item, we add text between the <li> and </li> tags. In this case, the L stands for "list" and the I stands for "item".
<body>
<ol>
<li>Tortoise</li>
</ol>
</body>