Add aditional field with title to every node I am trying to add additional field to nodes. I could add the field but I can't find a way to add its title. I have implemented the hook_node_view . 
My code is


function cso_node_view($node, $view_mode, $langcode) {

  $node->content['my_additional_field'] = array(
      '#markup' => "additional field",
      '#title' => "additional title",
      '#weight' => 1000
    );
}


The title is not appearing where the node is being printed. How can I add the title for this additional field?
As far as I know there's no generic #title property (it's certainly not mentioned in the render array docs); forms use them, but I don't think extends to any render array.

#prefix would be the way to go:

$content['my_additional_field'] = array(
  '#markup' =&gt; "additional field",
  '#prefix' =&gt; "&lt;h3&gt;Title&lt;/h3&gt;",
  '#weight' =&gt; 1000
);