What is the tag <TBODY>?

I have it throughout my code, which I wrote a long time ago and can't remember making. I'm going thru it now and fixing it up but I don't remember that code, and it is not taught on Lissa's site (that I can see) so I am wondering if I should just delete it or what. I have it like,

<TABLE>
<TBODY>
<TR>
<TD>
Hi there :)
</TD>
</TR>
</TBODY>
</TABLE>

Kinda like that.

http://www.w3.org/TR/REC-html40/struct/tables.html#edef-TBODY

best answer I could find.

Wow that's interesting! I have no clue where I learned that :\ lol.. Thanks!