Print the current source node of the comment I wold like to have some clues to search. 
Out of the box Drupal let you see the original article or page when you write a comment and click "preview". I search everywhere and I haven't a clue about how to fix the problem when I make a custom tpl for the coment-form.tpl.php I lost the part where I see the original source of the subject I'm posting. I just see the comment form. I think is not comment.tpl or comment-wrapper.tpl I also make a custom module but no luck.
The node id for the comment is stored in:

$comment-&gt;nid


e.g, in the template, to print out the node, you could:

if (isset($comment-&gt;nid)) {
  print render(node_view(node_load($comment-&gt;nid)));
}


You could also add it as a template variable in preprocess function. 

See node_view for more options