What's that File (layout)?

There are many different ways to figure out what information the node table contains.

1. You could use dsm($node); in an appropriate place in your code, assuming you have the Devel module installed.
2. You could also use a poor man's version of dsm, a la <a href="https://api.drupal.org/api/drupal/includes!bootstrap.inc/function/drupal_set_message/7">drupal_set_message</a>('&lt;pre&gt;' . print_r($node, 1) . '&lt;/pre&gt;');.

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