This is a Drupal template file.

page.tpl.php

<?php
/**
 * @file
 * Output for main HTML page content.
 */

if ($tabs = render($tabs)):
  ?>
  <div class="tabs">
  <?php
    print $tabs;
  ?>
  </div>
  <?php
endif;
print $messages;
print render($title_prefix);
if ($title):
endif;
print render($title_suffix);
print render($page['help']);
if ($action_links):
  ?>
  <ul class="action-links"><?php print render($action_links); ?></ul>
  <?php
endif;
?>
<div id="main-content" class="clearfix">
  <?php print render($page['content']); ?>
</div>
<?php
print $feed_icons;