Form type item shouldn't be generating a label by default.

Ok, I'm looking admin/config/content/formats/2

There are orphaned labels which seem to be produced by FAPI via:

  $form['filters']['order'] = array(
    '#type' => 'item',
    '#title' => t('Filter processing order'),
    '#theme' => 'filter_admin_format_filter_order',
  );

...

  $form['filter_settings_title'] = array(
    '#type' => 'item',
    '#title' => t('Filter settings'),
  );

Which is a problem of semantics but it produces errors for validators like webaim.

It would be much better if produced:

  <h3>Filter processing order </h3>

Rather than:

  <label for="edit-filters-order">Filter processing order </label>

but it doesn't seem right to use theme_form_element_label() to do this.