sub table {
  my ($tab,$opt) = @_;

  my @attributes;
  push @attributes, qq(id="$opt->{id}")       if $opt->{id};
  push @attributes, qq(class="$opt->{class}") if $opt->{class};
  push @attributes, qq(style="$opt->{style}") if $opt->{style};

  my $format = @attributes > 0 ? ' '.join(' ',@attributes) : '';
  my $tag = 'table'.$format;

  line($tab,qq(<$tag>));
  line($tab + 1,qq(<caption>$opt->{caption}</caption>)) if $opt->{caption};

  row($tab + 1,'header',$opt->{headings}) if $opt->{headings};

  for (@{$opt->{rows} || []}) {
    row($tab + 1, $_->isa("MyRow::WithHead")?"whead":"data", $_);
  }

  line($tab,q(</table>));
}

sub data  { bless \@_, "MyRow" }
sub whead { bless \@_, "MyRow::WithHead" }

table(1, {
	id       => 't1',
	headings => [qw/NAME STRENGTH COMMENT/],
	rows     => [
		whead(qw/1    2        no/),
		data( qw/2    3        yes/),
		whead(qw/10   20       another/),
		data( qw/100  200      comment/),
	],
});