... stuff ...
  <table>
  <TMPL_LOOP rows>
    <tr>
    <TMPL_LOOP columns>
      <td><TMPL_VAR ESCAPE=HTML value></td>
    </TMPL_LOOP>
    </tr>
  </TMPL_LOOP>
  </table>
  ... more stuff ...

##</code><code>##

  my $template = HTML::Template->new(rows => ...);
  print $template->output;

##</code><code>##

  ... stuff ...
  <TMPL_INCLUDE NAME="table.tmpl">
  ... more stuff ...

##</code><code>##

  ... stuff ...
  <TMPL_VAR ESCAPE=0 table>
  ... more stuff ...

##</code><code>##

   my $template = HTML::Template->new(filename => 'bigpage.tmpl');
   my $tableHTML = tableHTML(...);
   $template->param(table => $tableHTML);
   print $template->output;

##</code><code>##

  sub tableHTML {
    my %table_data = @_;
    my $template = HTML::Template->new(filename => 'table.tmpl');
    $template->param(%table_data);
    return $template->output;
  }