Empty <a NaMe="anchor" ID="anchor" cLaSs></A>!

<a href="test">title</a> is a title.

This is <? a PI ?>.

This is <!-- a --> comment.

This is <!-- a
--> multiline comment.

This is <span>tag
now </span>.

This is <sPAn>tag
</SPAN> now.

This is an empty <span></span> tag.

This is _something<span test="do_it" /> strange_.

Auto-closing: <br>

Expanding: <textarea></textarea>

An invalid tag: <hR>

A <p>block tag</p>.

An invalid </closing> tag.

A <script>*not*</script> tag.

An <span>unclosed *tag.*

Some <code>element with | pipe symbol</code>

Some <span><code>element with | pipe symbol</code></span>

Some <code>element with | pipe
symbol|</code>

<u>underlined</u>
