advance poll help

this it says "display_head
1)<table width="$pollvars[table_width]" border="0" cellspacing="0" cellpadding="1" bgcolor="$pollvars[bgcolor_fr]">
<tr align="center">
<td>
<style type="text/css">

</style>
<font face="$pollvars[font_face]" size="-1" color="#FFFFFF"><b>$pollvars[title]</b></font></td>
</tr>
<tr align="center">
<td>
<table width="100%" border="0" cellspacing="0" cellpadding="2" align="center" bgcolor="$pollvars[bgcolor_tab]">
<tr>
<td height="40" valign="middle"><font face="$pollvars[font_face]" color="$pollvars[font_color]" size="1"><b>$question</b></font></td>
</tr>
<tr align="right" valign="top">
<td>
<form method="post" action="$this->form_forward">
<table width="100%" border="0" cellspacing="0" cellpadding="0" align="center">
<tr valign="top" align="center">
<td>
<table width="100%" border="0" cellspacing="0" cellpadding="1" align="center">

The other it says:"display_loop"
2)<tr>
<td width="15%"><input type="radio" name="option_id" value="$data[option_id]"></td>
<td width="85%"><font face="$pollvars[font_face]" size="1" color="$pollvars[font_color]">$data[option_text]</font></td>
</tr>

the other it says"display_foot"
3) </table>
<input type="hidden" name="action" value="vote">
<input type="hidden" name="poll_ident" value="$poll_id">
<input type="submit" value="$pollvars[vote_button]" class="input">
<br>
<br>
<font face="$pollvars[font_face]" color="$pollvars[font_color]" size="1"><a href="$this->form_forward?action=results&poll_ident=$poll_id">$pollvars[result_text]</a></font>
</td>
</tr>
</table>
</form>
<font face="$pollvars[font_face]" size="1"><a href="http://www.proxy2.de" target="_blank" title="Advanced Poll">Version $pollvars[poll_version]</a></font>
</td>
</tr>
</table>
</td>
</tr>
</table>
what does all this mean what is the foot and so on please
thanks