Md in Wiki hasn't HTML tags support

See http://daringfireball.net/projects/markdown/. In that reference, creator talk about HTML tags support.

Markdown can be configured to produce HTML-style tags; e.g.:

<br>

Why BitBucket Wikis hasn't that? I want to add

<table>
<tr><td>1</td><td>2</td><td>3</td></tr>
<tr><td>4</td><td>5</td><td>6</td></tr>
</table>

Thanks in advance.