Using the Right Tag for the Right Job - HTML5 Mastery: Semantics, Standards, and Styling - page 90

<li>Wednesday, 8pm</li>
<li>Thursday, 8pm</li>
<li>Friday, 6pm and 8pm</li>
</ul>
</details>
__________
17 Fits in interactive category if type attribute is set to toolbar.
18 Visit the website http://caniuse.com and type details in the search field to see the current state
of browser support.
Unlike the previous example, which toggled only one line of text, this example shows
and hides two paragraphs and an unordered list.
Interacting with the elements will look something like Figure 2-12 .
Figure 2-12. A details element showing the hidden and shown state after clicking the summary
toggle
Note The summary element is optional; if it is omitted, the browser will create its
own label for the details element, such as the text “Details.”