The ol tag starts a numbered list. It can contain only li (193) tags, which denote the various elements in the list. Each item will be preceded by a number. The ol tag can occur inside a text, but surrounding text should always be enclosed in a p (208) paragraph tag, i.e. an ol tag should occur always at the same level as a p tag.
Example:
<p>some text before</p> <ol> <li>First item in the list</li> <li>Second item in the list</li> </ol>
Will be typeset as:
some text before
First item in the list.
Second item in the list.