rollercoaster375: Not completely true.. they're not part of XHTML, but they are, in fact, part of HTML 4.0.
I'll try to answer your question as best as possible, but you're better off looking at
http://www.w3schools.com/tags/default.asp if you have any more questions. If you're looking at making a website, though, I would suggest learning XHTML and CSS. Right now, I'm assuming that you want to do something like spice up a MySpace page or something.
Marquee (very browser specific):
Code:
<marquee>Text here</marquee>
Center:
Code:
<center>Text here</center>
There's no real way to tab in HTML. You can do it much better with XHTML and CSS:
Code:
<p style="text-indent: 5px">Text here</p>