diff --git includes/theme.inc includes/theme.inc
index 79fbecd..9b52310 100644
--- includes/theme.inc
+++ includes/theme.inc
@@ -1614,6 +1614,7 @@ function theme_breadcrumb($variables) {
  *   - sticky: Use a "sticky" table header.
  *   - empty: The message to display in an extra row if table does not have any
  *     rows.
+ *  @todo document no_striping.
  */
 function theme_table($variables) {
   $header = $variables['header'];
@@ -1728,8 +1729,10 @@ function theme_table($variables) {
       }
       if (count($cells)) {
         // Add odd/even class
-        $class = $flip[$class];
-        $attributes['class'][] = $class;
+        if (empty($row['no_striping'])) {
+          $class = $flip[$class];
+          $attributes['class'][] = $class;
+        }
 
         // Build row
         $output .= ' <tr' . drupal_attributes($attributes) . '>';
@@ -1999,7 +2002,7 @@ function theme_indentation($variables) {
 
 /**
  * Returns HTML output for a single table cell for theme_table().
- * 
+ *
  * @param $cell
  *   Array of cell information, or string to display in cell.
  * @param bool $header
diff --git misc/tabledrag.js misc/tabledrag.js
index be0ad63..b346b73 100644
--- misc/tabledrag.js
+++ misc/tabledrag.js
@@ -1010,14 +1010,17 @@ Drupal.tableDrag.prototype.row.prototype.swap = function (position, row) {
  */
 Drupal.tableDrag.prototype.row.prototype.validIndentInterval = function (prevRow, nextRow) {
   var minIndent, maxIndent;
-
+  
   // Minimum indentation:
   // Do not orphan the next row.
   minIndent = nextRow ? $('.indentation', nextRow).size() : 0;
 
   // Maximum indentation:
-  if (!prevRow || $(this.element).is('.tabledrag-root')) {
-    // Do not indent the first row in the table or 'root' rows..
+  if (!prevRow || $(prevRow).is(':not(.draggable)') || $(this.element).is('.tabledrag-root')) {
+    // Do not indent: 
+	// - the first row in the table,
+	// - rows dragged below a non-draggable row,
+	// - 'root' rows.
     maxIndent = 0;
   }
   else {
diff --git modules/field/modules/text/text.module modules/field/modules/text/text.module
index 2a3604c..381d79e 100644
--- modules/field/modules/text/text.module
+++ modules/field/modules/text/text.module
@@ -251,6 +251,7 @@ function text_field_formatter_info() {
     'text_trimmed' => array(
       'label' => t('Trimmed'),
       'field types' => array('text', 'text_long', 'text_with_summary'),
+      'settings' => array('trim_length' => 600),
     ),
 
     // The 'summary or trimmed' field formatter for text_with_summary
@@ -260,11 +261,51 @@ function text_field_formatter_info() {
     'text_summary_or_trimmed' => array(
       'label' => t('Summary or trimmed'),
       'field types' => array('text_with_summary'),
+      'settings' => array('trim_length' => 600),
     ),
   );
 }
 
 /**
+ * Implements hook_field_formatter_settings_form().
+ */
+function text_field_formatter_settings_form($field, $instance, $view_mode) {
+  $display = $instance['display'][$view_mode];
+  $settings = $display['settings'];
+
+  $form = array();
+
+  if ($display['type'] == 'text_trimmed' || $display['type'] == 'text_summary_or_trimmed') {
+    $form['trim_length'] = array(
+      '#title' => t('Length'),
+      '#type' => 'textfield',
+      '#size' => 20,
+      '#default_value' => $settings['trim_length'],
+      '#element_validate' => array('_element_validate_integer_positive'),
+      '#required' => TRUE,
+    );
+  }
+
+  return $form;
+}
+
+/**
+ * Implements hook_field_formatter_settings_summary().
+ */
+function text_field_formatter_settings_summary($field, $instance, $view_mode) {
+  $display = $instance['display'][$view_mode];
+  $settings = $display['settings'];
+
+  $summary = '';
+
+  if ($display['type'] == 'text_trimmed' || $display['type'] == 'text_summary_or_trimmed') {
+    $summary = t('Length: @length characters', array('@length' => $settings['trim_length']));
+  }
+
+  return $summary;
+}
+
+/**
  * Implements hook_field_formatter_view().
  */
 function text_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
diff --git modules/field_ui/field_ui-display-overview-table.tpl.php modules/field_ui/field_ui-display-overview-table.tpl.php
deleted file mode 100644
index 9933c56..0000000
--- modules/field_ui/field_ui-display-overview-table.tpl.php
+++ /dev/null
@@ -1,83 +0,0 @@
-<?php
-// $Id: field_ui-display-overview-table.tpl.php,v 1.3 2010/07/17 19:19:39 dries Exp $
-
-/**
- * @file
- * Default theme implementation to configure field display settings.
- *
- * Available variables:
- * - $rows: The field display settings form broken down into rendered rows for
- *   printing as a table. The array is separated in two entries, 'visible' and
- *   'hidden'.
- * - $id: The HTML id for the table.
- *
- * @see field_ui_display_overview_form()
- * @see template_preprocess_field_ui_display_overview_table()
- */
-?>
-<?php if ($rows): ?>
-<div id="field-display-overview-wrapper">
-  <table id="field-display-overview" class="field-display-overview sticky-enabled">
-    <thead>
-      <tr>
-        <th><?php print t('Field'); ?></th>
-        <th><?php print t('Weight'); ?></th>
-        <th><?php print t('Label'); ?></th>
-        <th colspan="3"><?php print t('Format'); ?></th>
-      </tr>
-    </thead>
-    <tbody>
-      <tr class="region-message region-visible-message <?php print empty($rows['visible']) ? 'region-empty' : 'region-populated'; ?>">
-        <td colspan="5"><em><?php print t('No field is displayed'); ?></em></td>
-      </tr>
-      <?php
-      $count = 0;
-      foreach ($rows['visible'] as $row): ?>
-        <tr id="<?php print $row->id; ?>" class="<?php print $count % 2 == 0 ? 'odd' : 'even'; ?> <?php print $row->class ?>">
-          <td><span class="<?php print $row->label_class; ?>"><?php print $row->human_name; ?></span></td>
-          <td><?php print $row->weight . $row->hidden_name; ?></td>
-          <td><?php if (isset($row->label)) print $row->label; ?></td>
-          <?php if (isset($row->settings_edit_form)) : ?>
-            <td colspan="3">
-              <?php print $row->type; ?>
-              <?php print $row->settings_edit_form; ?>
-            </td>
-          <?php else :?>
-            <td>
-              <?php print $row->type; ?>
-            </td>
-            <td class="field-formatter-summary-cell">
-              <?php print $row->settings_summary; ?>
-            </td>
-            <td>
-              <?php print $row->settings_edit; ?>
-            </td>
-          <?php endif; ?>
-        </tr>
-        <?php $count++;
-      endforeach; ?>
-      <tr class="region-title region-title-hidden">
-        <td colspan="5"><?php print t('Hidden'); ?></td>
-      </tr>
-      <tr class="region-message region-hidden-message <?php print empty($rows['hidden']) ? 'region-empty' : 'region-populated'; ?>">
-        <td colspan="5"><em><?php print t('No field is hidden'); ?></em></td>
-      </tr>
-      <?php foreach ($rows['hidden'] as $row): ?>
-        <tr class="<?php print $count % 2 == 0 ? 'odd' : 'even'; ?> <?php print $row->class ?>">
-          <td><span class="<?php print $row->label_class; ?>"><?php print $row->human_name; ?></span></td>
-          <td><?php print $row->weight . $row->hidden_name; ?></td>
-          <td><?php if (isset($row->label)) print $row->label; ?></td>
-          <td><?php print $row->type; ?></td>
-          <td class="field-formatter-summary-cell">
-            <?php print $row->settings_summary; ?>
-          </td>
-          <td>
-            <?php print $row->settings_edit; ?>
-          </td>
-        </tr>
-        <?php $count++;
-      endforeach; ?>
-    </tbody>
-  </table>
-</div>
-<?php endif; ?>
diff --git modules/field_ui/field_ui.admin.inc modules/field_ui/field_ui.admin.inc
index a20b546..b767b79 100644
--- modules/field_ui/field_ui.admin.inc
+++ modules/field_ui/field_ui.admin.inc
@@ -80,18 +80,26 @@ function _field_ui_reduce_order($array, $a) {
 }
 
 /**
- * Theme preprocess function for theme_field_ui_table().
- *
- * @see theme_field_ui_table()
+ * Pre-render callback for field_ui_table elements.
  */
-function template_preprocess_field_ui_table(&$variables) {
-  $elements = &$variables['elements'];
+function field_ui_table_pre_render($elements) {
+  $regions = $elements['#regions'];
+
+  // @todo JS - when a group is dragged in / out of region, update visibility.
+  // @todo from the late template_preprocess_field_ui_display_overview_table() :
+  // used in a test
+  // $row->label_class = 'label-field';
+  // used for messages ?
+  // $row->id = 'row-' . strtr($key, '_', '-');
 
   // Build the tree structure from the weight and parenting data contained in
   // the flat form structure, to determine row order and indentation.
   $tree = array('' => array('name' => '', 'children' => array()));
+  $trees = array_fill_keys(array_keys($regions), $tree);
+
   $parents = array();
   $list = drupal_map_assoc(element_children($elements));
+
   // Iterate on rows until we can build a known tree path for all of them.
   while ($list) {
     foreach ($list as $name) {
@@ -99,12 +107,22 @@ function template_preprocess_field_ui_table(&$variables) {
       $parent = $row['parent_wrapper']['parent']['#value'];
       // Proceed if parent is known.
       if (empty($parent) || isset($parents[$parent])) {
-        // Remove from the next iteration.
+        // Grab parent, and remove the row from the next iteration.
         $parents[$name] = $parent ? array_merge($parents[$parent], array($parent)) : array();
         unset($list[$name]);
 
+        // Determine the region which the row belongs to.
+        // @todo Not great...
+        if (isset($row['format']['type'])) {
+          $region_name = ($row['format']['type']['#value'] == 'hidden' ? 'hidden' : 'visible');
+        }
+        else {
+          $region_name = key($regions);
+        }
+        $row['#attributes']['class'][] = 'field-display-' . $region_name;
+
         // Add the element in the tree.
-        $target = &$tree[''];
+        $target = &$trees[$region_name][''];
         foreach ($parents[$name] as $key) {
           $target = &$target['children'][$key];
         }
@@ -119,8 +137,12 @@ function template_preprocess_field_ui_table(&$variables) {
     }
   }
 
-  // Determine rendering order for the tree.
-  $variables['row_order'] = array_reduce($tree, '_field_ui_reduce_order');
+  // Determine rendering order from the tree structure.
+  foreach ($regions as $region_name => $region) {
+    $elements['#regions'][$region_name]['rows_order'] = array_reduce($trees[$region_name], '_field_ui_reduce_order');
+  }
+
+  return $elements;
 }
 
 /**
@@ -143,19 +165,50 @@ function theme_field_ui_table($variables) {
     }
   }
 
-  foreach ($variables['row_order'] as $key) {
-    $element = $elements[$key];
-    $row = array('data' => array());
-    $row += $element['#attributes'];
+  // Determine the colspan to use for region rows, by checking the number of
+  // columns in the first row.
+  $key = current(element_children($elements, FALSE));
+  $colums_count = count(element_children($elements[$key], FALSE));
 
-    foreach (element_children($element) as $cell_key) {
-      $cell = array('data' => drupal_render($element[$cell_key]));
-      if (isset($element[$cell_key]['#cell_attributes'])) {
-        $cell += $element[$cell_key]['#cell_attributes'];
+  foreach ($elements['#regions'] as $region_name => $region) {
+    // Add region rows.
+    if (isset($region['label'])) {
+      $table['rows'][] = array(
+        'class' => array('region-title', 'region-title-hidden'),
+        'no_striping' => TRUE,
+        'data' => array(
+          array('colspan' => $colums_count, 'data' => $region['label']),
+        ),
+      );
+    }
+    if (isset($region['message'])) {
+      $class = (empty($region['rows_order']) ? 'region-empty' : 'region-populated');
+      $table['rows'][] = array(
+        'class' => array('region-message', 'region-' . $region_name . '-message', $class),
+        'no_striping' => TRUE,
+        'data' => array(
+          array('colspan' => $colums_count, 'data' => $region['message']),
+        ),
+      );
+    }
+
+    // Add form rows, in the order determined at pre-render time.
+    foreach ($region['rows_order'] as $key) {
+      $element = $elements[$key];
+      $row = array('data' => array());
+      if (isset($element['#attributes'])) {
+        $row += $element['#attributes'];
+      }
+
+      foreach (element_children($element) as $cell_key) {
+        $cell = array('data' => drupal_render($element[$cell_key]));
+        if (isset($element[$cell_key]['#cell_attributes'])) {
+          $cell += $element[$cell_key]['#cell_attributes'];
+        }
+        $row['data'][] = $cell;
       }
-      $row['data'][] = $cell;
+      $table['rows'][] = $row;
     }
-    $table['rows'][] = $row;
   }
 
   return theme('table', $table);
@@ -195,7 +248,7 @@ function field_ui_field_overview_form($form, &$form_state, $entity_type, $bundle
   );
 
   $table = array(
-    '#type' => 'table',
+    '#type' => 'field_ui_table',
     '#tree' => TRUE,
     '#header' => array(
       t('Label'),
@@ -219,7 +272,7 @@ function field_ui_field_overview_form($form, &$form_state, $entity_type, $bundle
     $weights[] = $weight;
     $table[$name] = array(
       '#parents' => array($name),
-      '#attributes' => array('class' => array('draggable tabledrag-leaf')),
+      '#attributes' => array('class' => array('draggable', 'tabledrag-leaf')),
       'label' => array(
         '#markup' => check_plain($instance['label']),
       ),
@@ -724,14 +777,26 @@ function field_ui_display_overview_form($form, &$form_state, $entity_type, $bund
     return $form;
   }
 
-  $form_state += array(
-    'formatter_settings_edit' => NULL,
-  );
-
   $table = array(
-    '#theme' => 'field_ui_display_overview_table',
-    '#field_rows' => array(),
+    '#type' => 'field_ui_table',
     '#tree' => TRUE,
+    '#header' => array(
+      t('Field'),
+      t('Weight'),
+      t('Parent'),
+      t('Label'),
+      array('data' => t('Format'), 'colspan' => 3),
+    ),
+    '#regions' => array(
+      'visible' => array('message' => t('No field is displayed.')),
+      'hidden' => array('label' => t('Hidden'), 'message' => t('No field is hidden.')),
+    ),
+    '#parent_options' => array('' => t('<none>')),
+    // Add ID for tabledrag behavior.
+    '#attributes' => array('id' => 'field-display-overview'),
+    // Add AJAX wrapper.
+    '#prefix' => '<div id="field-display-overview-wrapper">',
+    '#suffix' => '</div>',
   );
 
   $field_label_options = array(
@@ -744,50 +809,70 @@ function field_ui_display_overview_form($form, &$form_state, $entity_type, $bund
     'hidden' => t('Hidden'),
   );
 
+  // Field rows.
   foreach ($instances as $name => $instance) {
+    $field = field_info_field($instance['field_name']);
     $display = $instance['display'][$view_mode];
-    $table[$name]['human_name'] = array(
-      '#markup' => check_plain($instance['label']),
-    );
-    $table[$name]['weight'] = array(
-      '#type' => 'textfield',
-      '#default_value' => $display['weight'],
-      '#size' => 3,
-    );
-    $table[$name]['hidden_name'] = array(
-      '#type' => 'hidden',
-      '#default_value' => $name,
-    );
-    $table[$name]['label'] = array(
-      '#type' => 'select',
-      '#options' => $field_label_options,
-      '#default_value' => $display['label'],
+    $table[$name] = array(
+      '#attributes' => array('class' => array('draggable', 'tabledrag-leaf', 'field-name-' . drupal_html_class($name))),
+      'human_name' => array(
+        '#markup' => check_plain($instance['label']),
+      ),
+      'weight' => array(
+        '#type' => 'textfield',
+        '#default_value' => $display['weight'],
+        '#size' => 3,
+        '#attributes' => array('class' => array('field-weight')),
+      ),
+      'parent_wrapper' => array(
+        'parent' => array(
+          '#type' => 'select',
+          '#options' => $table['#parent_options'],
+          '#default_value' => '',
+          '#attributes' => array('class' => array('field-parent')),
+          '#parents' => array('fields', $name, 'parent'),
+        ),
+        'hidden_name' => array(
+          '#type' => 'hidden',
+          '#default_value' => $name,
+          '#attributes' => array('class' => array('field-name')),
+        ),
+      ),
+      'label' => array(
+        '#type' => 'select',
+        '#options' => $field_label_options,
+        '#default_value' => $display['label'],
+      ),
     );
-    $field = field_info_field($instance['field_name']);
 
     // The handling of the 'hidden' region in field_ui.js relies on the
     // 'formatter type' select, so it is present in all cases, and hidden with
     // CSS when the row is in 'edit settings' mode.
     $formatter_options = field_ui_formatter_options($field['type']);
     $formatter_options['hidden'] = t('<Hidden>');
-    $table[$name]['type'] = array(
-      '#type' => 'select',
-      '#options' => $formatter_options,
-      '#default_value' => $display['type'],
-      '#ajax' => array(
-        'callback' => 'field_ui_formatter_settings_js',
-        'wrapper' => 'field-display-overview-wrapper',
-        'effect' => 'fade',
+    $table[$name]['format'] = array(
+      'type' => array(
+        '#type' => 'select',
+        '#options' => $formatter_options,
+        '#default_value' => $display['type'],
+//        '#ajax' => array(
+//          'callback' => 'field_ui_formatter_settings_js',
+//          'wrapper' => 'field-display-overview-wrapper',
+//          'effect' => 'fade',
+//        ),
+        '#parents' => array('fields', $name, 'type'),
+        '#attributes' => array('class' => array('field-formatter-type')),
+//        '#field_name' => $name,
+//        '#op' => 'change_type',
       ),
-      '#field_name' => $name,
-      '#op' => 'change_type',
+      'settings_edit_form' => array(),
     );
     // Formatter settings.
 
     // Check the currently selected formatter, and merge persisted values for
     // formatter settings.
-    if (isset($form_state['values']['settings'][$name]['type'])) {
-      $formatter_type = $form_state['values']['settings'][$name]['type'];
+    if (isset($form_state['values']['fields'][$name]['type'])) {
+      $formatter_type = $form_state['values']['fields'][$name]['type'];
     }
     else {
       $formatter_type = $display['type'];
@@ -816,40 +901,43 @@ function field_ui_display_overview_form($form, &$form_state, $entity_type, $bund
       '#field_name' => $name,
     );
 
-    if ($form_state['formatter_settings_edit'] == $name) {
+    if (isset($form_state['formatter_settings_edit']) && $form_state['formatter_settings_edit'] == $name) {
       // We are currently editing this field's formatter settings. Display the
       // settings form and submit buttons.
-      $table[$name]['settings_edit_form'] = array();
       $additions = module_invoke($formatter['module'], 'field_formatter_settings_form', $field, $instance, $view_mode, $form, $form_state);
       if (is_array($additions)) {
-        $table[$name]['settings_edit_form'] = array(
+        $table[$name]['format']['#cell_attributes'] = array('colspan' => 3);
+        $table[$name]['format']['settings_edit_form'] = array(
           '#type' => 'container',
           '#attributes' => array('class' => array('field-formatter-settings-edit-form')),
+          '#parents' => array('fields', $name, 'settings_edit_form'),
+          'label' => array(
+            '#markup' => t('Format settings:') . ' <span class="formatter-name">' . $formatter['label'] . '</span>',
+          ),
+          'settings' => $additions,
+          'actions' => array(
+            '#type' => 'actions',
+            'save_settings' => $base_button + array(
+              '#type' => 'submit',
+              '#name' => $name . '_formatter_settings_update',
+              '#value' => t('Update'),
+              '#op' => 'update',
+            ),
+            'cancel_settings' => $base_button + array(
+              '#type' => 'submit',
+              '#name' => $name . '_formatter_settings_cancel',
+              '#value' => t('Cancel'),
+              '#op' => 'cancel',
+              // Do not check errors for the 'Cancel' button.
+              '#limit_validation_errors' => array(),
+            ),
+          ),
         );
-        $table[$name]['settings_edit_form']['label'] = array(
-          '#markup' => t('Format settings:') . ' <span class="formatter-name">' . $formatter['label'] . '</span>',
-        );
-        $table[$name]['settings_edit_form']['settings'] = $additions;
-        $table[$name]['settings_edit_form']['actions'] = array('#type' => 'actions');
-        $table[$name]['settings_edit_form']['actions']['save_settings'] = $base_button + array(
-          '#type' => 'submit',
-          '#name' => $name . '_formatter_settings_update',
-          '#value' => t('Update'),
-          '#op' => 'update',
-        );
-        $table[$name]['settings_edit_form']['actions']['cancel_settings'] = $base_button + array(
-          '#type' => 'submit',
-          '#name' => $name . '_formatter_settings_cancel',
-          '#value' => t('Cancel'),
-          '#op' => 'cancel',
-          // Do not check errors for the 'Cancel' button.
-          '#limit_validation_errors' => array(),
-        );
-        $table[$name]['#settings_editing'] = TRUE;
+        $table[$name]['#attributes']['class'][] = 'field-formatter-settings-editing';
         // When formatter is changed, cancel the currently edited settings. The
         // select 'formatter type' input is hidden in editing mode, so this only
         // happens is the row is dragged into the 'hidden' section.
-        $table[$name]['type']['#ajax']['trigger_as'] = array('name' => $name . '_formatter_settings_cancel');
+        $table[$name]['format']['type']['#ajax']['trigger_as'] = array('name' => $name . '_formatter_settings_cancel');
       }
     }
     else {
@@ -860,6 +948,7 @@ function field_ui_display_overview_form($form, &$form_state, $entity_type, $bund
       if ($summary) {
         $table[$name]['settings_summary'] = array(
           '#markup' => '<div class="field-formatter-summary">' . $summary . '</div>',
+          '#cell_attributes' => array('class' => array('field-formatter-summary-cell')),
         );
         $table[$name]['settings_edit'] = $base_button + array(
           '#type' => 'image_button',
@@ -874,7 +963,6 @@ function field_ui_display_overview_form($form, &$form_state, $entity_type, $bund
         );
       }
     }
-    $table['#field_rows'][] = $name;
 
     // Collect default formatters for the JS script.
     $field_type_info = field_info_field_types($field['type']);
@@ -882,31 +970,45 @@ function field_ui_display_overview_form($form, &$form_state, $entity_type, $bund
   }
 
   // Non-field elements.
+  // @todo test with poll...
   foreach ($extra_fields as $name => $extra_field) {
     $display = $extra_field['display'][$view_mode];
-    $table[$name]['human_name'] = array(
-      '#markup' => check_plain($extra_field['label']),
-    );
-    $table[$name]['weight'] = array(
-      '#type' => 'textfield',
-      '#default_value' => $display['weight'],
-      '#size' => 3,
-    );
-    $table[$name]['hidden_name'] = array(
-      '#type' => 'hidden',
-      '#default_value' => $name,
-    );
-    $table[$name]['type'] = array(
-      '#type' => 'select',
-      '#options' => $extra_visibility_options,
-      '#default_value' => $display['visible'] ? 'visible' : 'hidden',
+    $table[$name] = array(
+      '#attributes' => array('class' => array('draggable', 'tabledrag-leaf', 'field-name-' . drupal_html_class($name))),
+      'human_name' => array(
+        '#markup' => check_plain($extra_field['label']),
+      ),
+      'weight' => array(
+        '#type' => 'textfield',
+        '#default_value' => $display['weight'],
+        '#size' => 3,
+        '#attributes' => array('class' => array('field-weight')),
+      ),
+      'parent_wrapper' => array(
+        'parent' => array(
+          '#type' => 'select',
+          '#options' => $table['#parent_options'],
+          '#default_value' => '',
+          '#attributes' => array('class' => array('field-parent')),
+          '#parents' => array('fields', $name, 'parent'),
+        ),
+        'hidden_name' => array(
+          '#type' => 'hidden',
+          '#default_value' => $name,
+          '#attributes' => array('class' => array('field-name')),
+        ),
+      ),
+      'type' => array(
+        '#type' => 'select',
+        '#options' => $extra_visibility_options,
+        '#default_value' => $display['visible'] ? 'visible' : 'hidden',
+      ),
+      'settings_summary' => array(),
+      'settings_edit' => array(),
     );
-    $table[$name]['settings_summary'] = array();
-    $table[$name]['settings_edit'] = array();
-    $table['#field_rows'][] = $name;
   }
 
-  $form['settings'] = $table;
+  $form['fields'] = $table;
 
   // Custom display settings.
   if ($view_mode == 'default') {
@@ -937,14 +1039,31 @@ function field_ui_display_overview_form($form, &$form_state, $entity_type, $bund
     );
   }
 
+  // Hidden element used by field_ui.js to track dragged rows.
+  $form['dragged_rows'] = array('#type' => 'hidden');
+
   $form['actions'] = array('#type' => 'actions');
   $form['actions']['submit'] = array('#type' => 'submit', '#value' => t('Save'));
-
+  $form['actions']['refresh'] = $base_button + array(
+    '#type' => 'submit',
+    '#value' => t('Refresh'),
+    '#name' => 'refresh',
+    '#op' => 'refresh',
+    // Do not check errors.
+    '#limit_validation_errors' => array(),
+  );
   $form['#attached']['js'][] = drupal_get_path('module', 'field_ui') . '/field_ui.js';
   $form['#attached']['css'][] = drupal_get_path('module', 'field_ui') . '/field_ui.css';
 
   drupal_add_js(array('fieldDefaultFormatters' => $default_formatters), 'setting');
 
+  // Add tabledrag behavior.
+  // @todo : is not caught on AJAX update - known bug...
+    drupal_add_tabledrag('field-display-overview', 'order', 'sibling', 'field-weight');
+    drupal_add_tabledrag('field-display-overview', 'match', 'parent', 'field-parent', 'field-parent', 'field-name');
+//  $form['#attached']['drupal_add_tabledrag'][] = array('field-display-overview', 'order', 'sibling', 'field-weight');
+//  $form['#attached']['drupal_add_tabledrag'][] = array('field-display-overview', 'match', 'parent', 'field-parent', 'field-parent', 'field-name');
+
   return $form;
 }
 
@@ -954,23 +1073,24 @@ function field_ui_display_overview_form($form, &$form_state, $entity_type, $bund
  */
 function field_ui_formatter_settings_submit($form, &$form_state) {
   $trigger = $form_state['triggering_element'];
-  $field_name = $trigger['#field_name'];
   $op = $trigger['#op'];
 
   switch ($op) {
     case 'edit':
       // Store the field whose settings are currently being edited.
+      $field_name = $trigger['#field_name'];
       $form_state['formatter_settings_edit'] = $field_name;
       break;
 
     case 'update':
       // Store the saved settings.
-      $values = $form_state['values']['settings'][$field_name]['settings_edit_form']['settings'];
+      $field_name = $trigger['#field_name'];
+      $values = $form_state['values']['fields'][$field_name]['settings_edit_form']['settings'];
       $form_state['formatter_settings'][$field_name] = $values;
       // Fall-through to the 'cancel' case.
     case 'cancel':
       // Unset the field as being currently edited.
-      $form_state['formatter_settings_edit'] = NULL;
+      unset($form_state['formatter_settings_edit']);
       break;
   }
 
@@ -982,75 +1102,40 @@ function field_ui_formatter_settings_submit($form, &$form_state) {
  */
 function field_ui_formatter_settings_js($form, &$form_state) {
   $trigger = $form_state['triggering_element'];
-  $field_name = $trigger['#field_name'];
   $op = $trigger['#op'];
 
   // Apply the AJAX effect to updated elements.
   switch ($op) {
-    case 'change_type':
-      $updated = array('settings_summary');
+//    case 'change_type':
+//      $updated = array('settings_summary');
+//      break;
+
+    case 'refresh':
+      $updated_fields = explode(' ', $form_state['values']['dragged_rows']);
+      $updated_columns = array('format', 'settings_summary', 'settings_edit');
       break;
 
     case 'edit':
-      $updated = array('settings_edit_form');
+      $updated_fields = array($trigger['#field_name']);
+      $updated_columns = array('format');
       break;
 
     case 'update':
     case 'cancel':
-      $updated = array('type', 'settings_summary', 'settings_edit');
+      $updated_fields = array($trigger['#field_name']);
+      $updated_columns = array('format', 'settings_summary', 'settings_edit');
       break;
   }
-  foreach ($updated as $key) {
-    $element = &$form['settings'][$field_name][$key];
-    $element['#prefix'] = '<div class="ajax-new-content">' . (isset($element['#prefix']) ? $element['#prefix'] : '');
-    $element['#suffix'] = (isset($element['#suffix']) ? $element['#suffix'] : '') . '</div>';
-  }
 
-  return $form['settings'];
-}
-
-/**
- * Theme preprocess function for field_ui-display-overview-table.tpl.php.
- */
-function template_preprocess_field_ui_display_overview_table(&$vars) {
-  $elements = &$vars['elements'];
-
-  $rows = array(
-    'visible' => array(),
-    'hidden' => array(),
-  );
-
-  if (!empty($elements['#field_rows'])) {
-    drupal_add_tabledrag('field-display-overview', 'order', 'sibling', 'field-weight');
-
-    $order = _field_ui_overview_order($elements, $elements['#field_rows']);
-    foreach ($order as $key) {
-      $element = &$elements[$key];
-      $visibility = $element['type']['#value'] == 'hidden' ? 'hidden' : 'visible';
-
-      // Add target classes for the tabledrag behavior.
-      $element['weight']['#attributes']['class'][] = 'field-weight';
-      $element['hidden_name']['#attributes']['class'][] = 'field-name';
-      $element['type']['#attributes']['class'][] = 'field-formatter-type';
-      $element['type']['#attributes']['class'][] = "field-display-$visibility";
-      $element['type']['#attributes']['class'][] = "field-name-$key";
-
-      $row = new stdClass();
-      foreach (element_children($element) as $child) {
-        $row->{$child} = drupal_render($element[$child]);
-      }
-      $row->settings_class = (!empty($element['#settings_class']) ? $element['#settings_class'] : '');
-      $row->class = 'draggable';
-      if (isset($element['#settings_editing'])) {
-        $row->class .= ' field-formatter-settings-editing';
-      }
-      $row->label_class = 'label-field';
-      $row->id = 'row-' . strtr($key, '_', '-');
-      $rows[$visibility][] = $row;
+  foreach ($updated_fields as $field_name) {
+    foreach ($updated_columns as $key) {
+      $element = &$form['fields'][$field_name][$key];
+      $element['#prefix'] = '<div class="ajax-new-content">' . (isset($element['#prefix']) ? $element['#prefix'] : '');
+      $element['#suffix'] = (isset($element['#suffix']) ? $element['#suffix'] : '') . '</div>';
     }
   }
 
-  $vars['rows'] = $rows;
+  return $form['fields'];
 }
 
 /**
@@ -1065,7 +1150,7 @@ function field_ui_display_overview_form_submit($form, &$form_state) {
   // Save data for 'regular' fields.
   foreach ($form['#fields'] as $field_name) {
     $instance = field_info_instance($entity_type, $field_name, $bundle);
-    $values = $form_values['settings'][$field_name];
+    $values = $form_values['fields'][$field_name];
     // Get formatter settings. They lie either directly in submitted form
     // values (if the whole form was submitted while some formatter
     // settings were being edited), or have been persisted in
@@ -1097,8 +1182,8 @@ function field_ui_display_overview_form_submit($form, &$form_state) {
   // Save data for 'extra' fields.
   foreach ($form['#extra'] as $name) {
     $bundle_settings['extra_fields']['display'][$name][$view_mode] = array(
-      'weight' => $form_values['settings'][$name]['weight'],
-      'visible' => $form_values['settings'][$name]['type'] == 'visible',
+      'weight' => $form_values['fields'][$name]['weight'],
+      'visible' => $form_values['fields'][$name]['type'] == 'visible',
     );
   }
 
@@ -1737,25 +1822,6 @@ function field_ui_next_destination($entity_type, $bundle) {
 }
 
 /**
- * Helper function to order fields when theming overview forms.
- * @todo Remove when 'Manage display' screen is done.
- */
-function _field_ui_overview_order(&$form, $field_rows) {
-  // Put weight and parenting values into a $dummy render structure and let
-  // drupal_render() figure out the corresponding row order.
-  $dummy = array();
-  // Field rows: account for weight.
-  foreach ($field_rows as $name) {
-    $dummy[$name] = array(
-      '#markup' => $name . ' ',
-      '#type' => 'markup',
-      '#weight' => $form[$name]['weight']['#value'],
-    );
-  }
-  return $dummy ? explode(' ', trim(drupal_render($dummy))) : array();
-}
-
-/**
  * Helper form element validator: integer.
  */
 function _element_validate_integer($element, &$form_state) {
diff --git modules/field_ui/field_ui.css modules/field_ui/field_ui.css
index c35190a..7738396 100644
--- modules/field_ui/field_ui.css
+++ modules/field_ui/field_ui.css
@@ -16,36 +16,42 @@
 }
 
 /* 'Manage display' overview */
-.field-display-overview tr.region-title td {
+#field-display-overview tr.region-title td {
   font-weight: bold;
 }
-.field-display-overview tr.region-populated {
+#field-display-overview tr.region-message td {
+  font-style: italic;
+}
+#field-display-overview tr.region-populated {
   display: none;
 }
-.field-display-overview .field-formatter-summary-cell {
+#field-display-overview .field-formatter-summary-cell {
   line-height: 1em;
 }
-.field-display-overview .field-formatter-summary {
+#field-display-overview .field-formatter-summary {
   float: left;
   font-size: 0.9em;
 }
-.field-display-overview td.field-formatter-summary-cell span.warning {
+#field-display-overview td.field-formatter-summary-cell span.warning {
   display: block;
   float: left;
   margin-right: .5em;
 }
-.field-display-overview .field-formatter-settings-edit-wrapper {
+#field-display-overview .field-formatter-settings-edit-wrapper {
   float: right;
 }
-.field-display-overview .field-formatter-settings-edit {
+#field-display-overview .field-formatter-settings-edit {
   float: right;
 }
-.field-display-overview tr.field-formatter-settings-editing td {
+#field-display-overview tr.field-formatter-settings-editing td {
   vertical-align: top;
 }
-.field-display-overview tr.field-formatter-settings-editing .field-formatter-type {
+#field-display-overview tr.field-formatter-settings-editing .field-formatter-type {
   display: none;
 }
-.field-display-overview .field-formatter-settings-edit-form .formatter-name{
+#field-display-overview .field-formatter-settings-edit-form .formatter-name{
   font-weight: bold;
+}
+#field-ui-display-overview-form #edit-refresh {
+  aaaadisplay:none;
 }
\ No newline at end of file
diff --git modules/field_ui/field_ui.js modules/field_ui/field_ui.js
index dff02b8..d32f379 100644
--- modules/field_ui/field_ui.js
+++ modules/field_ui/field_ui.js
@@ -89,8 +89,9 @@ jQuery.fn.fieldPopulateOptions = function (options, selected) {
  */
 Drupal.behaviors.fieldManageDisplayDrag = {
   attach: function (context, settings) {
+
     // tableDrag is required for this behavior.
-    if (!$('table.field-display-overview', context).length || typeof Drupal.tableDrag == 'undefined') {
+    if (!$('table#field-display-overview', context).length || typeof Drupal.tableDrag == 'undefined') {
       return;
     }
 
@@ -106,61 +107,62 @@ Drupal.behaviors.fieldManageDisplayDrag = {
     // or out of the 'Hidden' section.
     tableDrag.onDrop = function () {
       var dragObject = this;
-      var regionRow = $(dragObject.rowObject.element).prevAll('tr.region-message').get(0);
+      var row = dragObject.rowObject.element;
+      var regionRow = $(row).prevAll('tr.region-message').get(0);
       var visibility = regionRow.className.replace(/([^ ]+[ ]+)*region-([^ ]+)-message([ ]+[^ ]+)*/, '$2');
-
+      var oldVisibility = row.className.replace(/([^ ]+[ ]+)*field-display-([^ ]+)([ ]+[^ ]+)*/, '$2');
+      
       // Update the 'format' selector if the visibility changed.
-      var $select = $('select.field-formatter-type', dragObject.rowObject.element);
-      var oldVisibility = $select[0].className.replace(/([^ ]+[ ]+)*field-display-([^ ]+)([ ]+[^ ]+)*/, '$2');
       if (visibility != oldVisibility) {
-        $select.removeClass('field-display-' + oldVisibility).addClass('field-display-' + visibility);
-
-        // Update the selected formatter if coming from an actual drag.
-        if (!$select.data('noUpdate')) {
-          if (visibility == 'visible') {
-            // Restore the formatter back to the previously selected one if
-            // available, or to the default formatter.
-            var value = $select.data('oldFormatter');
-            if (typeof value == 'undefined') {
-              // Extract field name from the name of the select.
-              var fieldName = $select[0].className.match(/\bfield-name-(\S+)\b/)[1].replace('-', '_');
+    	// Operate on all rows in the dragged group.
+    	var rows = [];
+    	$.each(dragObject.rowObject.group, function (index, groupRow) {
+          var fieldName = groupRow.className.match(/\bfield-name-(\S+)\b/)[1].replace('-', '_');
+          rows.push(fieldName);
+    	  // @todo using class name field-formatter-type is not cool...
+	      var $select = $('select.field-formatter-type', groupRow);
+    	  // @todo : reevaluate if we need to alter class - whole table is reloaded.
+          $select.removeClass('field-display-' + oldVisibility).addClass('field-display-' + visibility);
+          
+          // Update the selected formatter if coming from an actual drag.
+          // @todo check noupdate...
+          if (!$select.data('noUpdate')) {
+            if (visibility == 'visible') {
+              // Restore the formatter back to the default formatter.
+              
               // Pseudo-fields do not have an entry in the defaultFormatters
               // array, we just return to 'visible' for those.
-              value = (fieldName in defaultFormatters) ? defaultFormatters[fieldName] : 'visible';
+              var value = (fieldName in defaultFormatters) ? defaultFormatters[fieldName] : 'visible';
             }
-            $select.data('oldFormatter', value);
-          }
-          else {
-            var value = 'hidden';
+            else {
+              var value = 'hidden';
+            }
+            // Change value.
+            $select.val(value);
           }
-          $select.val(value);
-          // Fire AJAX update of formatter settings.
-          $select.change();
-        }
-        $select.removeData('noUpdate');
+          $select.removeData('noUpdate');
+        });
+    	// @todo comment
+        $('input[name=dragged_rows]').val(rows.join(' '));
+    	// Trigger Ajax-update.
+    	$('input#edit-refresh').mousedown();
       }
     };
 
-    // Add the behavior to each formatter select list.
+    // Add the behavior to each formatter select list.  
     $('select.field-formatter-type', context).once('field-formatter-type', function () {
-      // Initialize 'previously selected formatter' as the incoming value.
-      if ($(this).val() != 'hidden') {
-        $(this).data('oldFormatter', $(this).val());
-      }
-
       // Add change listener.
       $(this).change(function (event) {
         var $select = $(this);
         var value = $select.val();
-
-        // Keep track of the last selected formatter.
-        if (value != 'hidden') {
-          $select.data('oldFormatter', value);
-        }
-
         var visibility = (value == 'hidden') ? 'hidden' : 'visible';
-        var oldVisibility = $select[0].className.replace(/([^ ]+[ ]+)*field-display-([^ ]+)([ ]+[^ ]+)*/, '$2');
+        // @todo check
+        var oldVisibility = $select.parents('tr').get(0).className.replace(/([^ ]+[ ]+)*field-display-([^ ]+)([ ]+[^ ]+)*/, '$2');
+        
         if (visibility != oldVisibility) {
+          // @todo : fix indent when setting an individual field in a group to hidden
+          // @todo : need to do this on group rows too...
+        	
           // Prevent the onDrop handler from overriding the selected option.
           $select.data('noUpdate', true);
 
@@ -171,16 +173,23 @@ Drupal.behaviors.fieldManageDisplayDrag = {
           tableDrag.rowObject = new tableDrag.row($row);
 
           // Move the row at the bottom of the new section.
+          // @todo looks broken with region message 
           if (visibility == 'hidden') {
             $('tr:last', tableDrag.table).after($row);
           }
           else {
             $('tr.region-title-hidden', tableDrag.table).before($row);
           }
-
+          
+          // Remove indentations.
+          // @todo doesn't work
+          var indent = $('.indentation', tableDrag.rowObject.element).length;
+          tableDrag.rowObject.indent(-indent);
+          // @todo : adjust parent ?          
           // Manually update weights and restripe.
           tableDrag.updateFields($row.get(0));
           tableDrag.rowObject.changed = true;
+
           if (tableDrag.oldRowElement) {
             $(tableDrag.oldRowElement).removeClass('drag-previous');
           }
@@ -193,7 +202,6 @@ Drupal.behaviors.fieldManageDisplayDrag = {
           // Modify empty regions with added or removed fields.
           checkEmptyRegions($table, tableDrag.rowObject);
         }
-
         // Remove focus from selectbox.
         $select.get(0).blur();
       });
@@ -203,7 +211,7 @@ Drupal.behaviors.fieldManageDisplayDrag = {
       $('tr.region-message', $table).each(function () {
         // If the dragged row is in this region, but above the message row, swap
         // it down one space.
-        if ($(this).prev('tr').get(0) == rowObject.element) {
+        if ($(this).prev('tr').get(0) == rowObject.group[rowObject.group.length - 1]) {
           // Prevent a recursion problem when using the keyboard to move rows up.
           if ((rowObject.method != 'keyboard' || rowObject.direction == 'down')) {
             rowObject.swap('after', this);
diff --git modules/field_ui/field_ui.module modules/field_ui/field_ui.module
index c3f3296..251c9fc 100644
--- modules/field_ui/field_ui.module
+++ modules/field_ui/field_ui.module
@@ -275,11 +275,6 @@ function _field_ui_view_mode_menu_access($entity_type, $bundle, $view_mode, $acc
  */
 function field_ui_theme() {
   return array(
-    'field_ui_display_overview_table' => array(
-      'render element' => 'elements',
-      'file' => 'field_ui.admin.inc',
-      'template' => 'field_ui-display-overview-table',
-    ),
     'field_ui_table' => array(
       'render element' => 'elements',
     ),
@@ -291,8 +286,10 @@ function field_ui_theme() {
  */
 function field_ui_element_info() {
   return array(
-    'table' => array(
+    'field_ui_table' => array(
       '#theme' => 'field_ui_table',
+      '#pre_render' => array('field_ui_table_pre_render'),
+      '#regions' => array('' => array()),
     ),
   );
 }
diff --git modules/image/image.field.inc modules/image/image.field.inc
index 87fbd31..4ab4e0d 100644
--- modules/image/image.field.inc
+++ modules/image/image.field.inc
@@ -428,14 +428,17 @@ function image_field_formatter_info() {
     'image' => array(
       'label' => t('Image'),
       'field types' => array('image'),
+      'settings' => array('setting_1' => 1, 'setting_2' => 'none', 'setting_3' => 1),
     ),
     'image_link_content' => array(
       'label' => t('Image linked to content'),
       'field types' => array('image'),
+      'settings' => array('setting_1' => 1, 'setting_2' => 'none', 'setting_3' => 1),
     ),
     'image_link_file' => array(
       'label' => t('Image linked to file'),
       'field types' => array('image'),
+      'settings' => array('setting_1' => 1, 'setting_2' => 'none', 'setting_3' => 1),
     ),
   );
 
@@ -443,14 +446,17 @@ function image_field_formatter_info() {
     $formatters['image__' . $style['name']] = array(
       'label' => t('Image "@style"', array('@style' => $style['name'])),
       'field types' => array('image'),
+      'settings' => array('setting_1' => 1, 'setting_2' => 'none', 'setting_3' => 1),
     );
     $formatters['image_link_content__' . $style['name']] = array(
       'label' => t('Image "@style" linked to content', array('@style' => $style['name'])),
       'field types' => array('image'),
+      'settings' => array('setting_1' => 1, 'setting_2' => 'none', 'setting_3' => 1),
     );
     $formatters['image_link_file__' . $style['name']] = array(
       'label' => t('Image "@style" linked to file', array('@style' => $style['name'])),
       'field types' => array('image'),
+      'settings' => array('setting_1' => 1, 'setting_2' => 'none', 'setting_3' => 1),
     );
   }
 
@@ -458,6 +464,58 @@ function image_field_formatter_info() {
 }
 
 /**
+ * Implements hook_field_formatter_settings_form().
+ */
+function image_field_formatter_settings_form($field, $instance, $view_mode) {
+  $display = $instance['display'][$view_mode];
+  $settings = $display['settings'];
+
+  $form = array();
+
+  $form['setting_1'] = array(
+    '#title' => t('Some option'),
+    '#type' => 'textfield',
+    '#size' => 20,
+    '#default_value' => $settings['setting_1'],
+    '#element_validate' => array('_element_validate_integer_positive'),
+    '#description' => t('Some longish description. Lorem ipsum dolor sit amet, consectetur adipiscing elit'),
+    '#required' => TRUE,
+  );
+
+  $form['setting_2'] = array(
+    '#title' => t('Other option'),
+    '#type' => 'select',
+    '#default_value' => $settings['setting_2'],
+    '#options' => array(1 => t('option 1'), 2 => t('option 2')),
+    '#description' => t('Vivamus nec magna vel lectus congue eleifend. Mauris dapibus erat eu tortor gravida ut suscipit dui tincidunt.'),
+  );
+
+  $form['setting_3'] = array(
+    '#title' => t('With sugar'),
+    '#type' => 'checkbox',
+    '#default_value' => $settings['setting_3'],
+  );
+
+  return $form;
+}
+
+/**
+ * Implements hook_field_formatter_settings_summary().
+ */
+function image_field_formatter_settings_summary($field, $instance, $view_mode) {
+  $display = $instance['display'][$view_mode];
+  $settings = $display['settings'];
+
+  $summary[] = t('Some option: @value', array('@value' => $settings['setting_1']));
+  $summary[] = t('Other option: @value', array('@value' => $settings['setting_2']));
+  if ($settings['setting_3']) {
+    $summary[] = t('With sugar');
+  }
+
+  return implode ('<br />', $summary);
+}
+
+/**
  * Implements hook_field_formatter_view().
  */
 function image_field_formatter_view($entity_type, $entity, $field, $instance, $langcode, $items, $display) {
diff --git themes/seven/style.css themes/seven/style.css
index 13979ec..fd1ec84 100644
--- themes/seven/style.css
+++ themes/seven/style.css
@@ -942,23 +942,23 @@ div.add-or-remove-shortcuts {
 
 /* Field UI */
 
-.field-display-overview input.field-formatter-settings-edit {
+#field-display-overview input.field-formatter-settings-edit {
   margin: 0;
   padding: 1px 8px;
 }
-.field-display-overview tr.field-formatter-settings-changed {
+#field-display-overview tr.field-formatter-settings-changed {
   background: #FFFFBB;
 }
-.field-display-overview tr.drag {
+#field-display-overview tr.drag {
   background: #FFEE77;
 }
-.field-display-overview tr.field-formatter-settings-editing {
+#field-display-overview tr.field-formatter-settings-editing {
   background: #D5E9F2;
 }
-.field-display-overview .field-formatter-settings-edit-form .form-item {
+#field-display-overview .field-formatter-settings-edit-form .form-item {
   margin: 10px 0;
 }
-.field-display-overview .field-formatter-settings-edit-form .form-submit {
+#field-display-overview .field-formatter-settings-edit-form .form-submit {
   margin-bottom: 0;
 }
 
