the table library question

[eluser]belbek[/eluser]
why this code from generate method of the Table library draws single <td></td> in a row although there is no </tr> in the foreach loop?

foreach($row as $cell)
{
$out .= $this->template['cell_'.$name.'start'];
$out.=$cell_number;

if ($cell === "")
{
$out .= $this->empty_cells;
}
else
{
$out .= $cell;
}

$out .= $this->template['cell_'.$name.'end'];
$cell_number++;

//exit($out);
}