Hello, I'm Willians, living in Brazil and do not know English law, then not repair the errors. :D
 I starting the develop for drupal, know a little of PHP, mysql. I am reading the book Pro Drupal Development, and the example of the book "chapter 2", I am not understanding the code right.
 More specifically, the function where return the datas. that is  annotate_nodeapi(&$node, $op, $teaser, $page), when return the result of the database, this code:       
         $node->annotation = db_result($result);
 No is showing, the result in screnn, should be :
 
      $node->content['annotation_form'] = array(
        '#value' => drupal_get_form('annotate_entry_form', $node->annotation),
        '#weight' => 10
      );

 Someone knows where my erros ??

 Thank you, all... :D

willians

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