# assuming load_template() is defined somewhere
# to return a template object

my $faq = load_template('faq.html');
$faq->param(PARAMS_FOR_FAQ_PLACEHOLDERS);

my $news = load_template('news.html');
$news->param(PARAMS_FOR_NEWS_PLACEHOLDERS);

my $template = load_template('main.html');
$template->param(
  today => scalar(localtime),
  news => $news->output,
  faq  => $faq->output,
);

print $template->output;