aside

I. Description

The aside element is used to designate some content as only tangentially related to the content around it.

What is considered to be 'tangentially related' is subjective and may differ from one author to another.

The aside element is not frequently used.

II. Examples

<!DOCTYPE html>
<html>
    <head>
        <title>Example Page</title>
    </head>
    <body>
        <h1>Aside Example Page</h1>
        <main>
            <article>
                <h2>News Story About A Basketball Game</h2>
                <p>
                    This is a news story about a basketball game.
                    This news story will regail you with details about
                    how the players valliantly attempted to throw, lob,
                    launch, and vault the basketball into the basketball
                    hoop assigned to their team.
                </p>
                <aside><p>Basketball was originally invented in the United States.</p></aside>
                <p>
                    The basketball game lasted 82 minutes and 11 seconds.
                </p>
            </article>
        </main>
    </body>
</html>