=== modified file 'modules/taxonomy/taxonomy.module'
--- modules/taxonomy/taxonomy.module	
+++ modules/taxonomy/taxonomy.module	
@@ -357,8 +357,7 @@ function taxonomy_form_term($vocabulary_
   $vocabulary = taxonomy_get_vocabulary($vocabulary_id);
 
   $form['name'] = array('#type' => 'textfield', '#title' => t('Term name'), '#default_value' => $edit['name'], '#maxlength' => 64, '#description' => t('The name for this term. Example: "Linux".'), '#required' => TRUE);
-
-  $form['description'] = array('#type' => 'textarea', '#title' => t('Description'), '#default_value' => $edit['description'], '#description' => t('A description of the term.'));
+  $form['weight'] = array('#type' => 'weight', '#title' => t('Weight'), '#default_value' => $edit['weight'], '#description' => t('In listings, the heavier terms will sink and the lighter terms will be positioned nearer the top.'));
 
   if ($vocabulary->hierarchy) {
     $parent = array_keys(taxonomy_get_parents($edit['tid']));
@@ -378,20 +377,26 @@ function taxonomy_form_term($vocabulary_
     }
   }
 
+  $form['advanced'] = array(
+    '#type' => 'fieldset',
+    '#title' => t('Advanced Options'),
+    '#collapsible' => TRUE,
+    '#collapsed' => variable_get('taxonomy_term_edit_advanced_collapsed', TRUE),
+  );
+  $form['advanced']['description'] = array(
+    '#type' => 'textarea',
+    '#title' => t('Description'),
+    '#default_value' => $edit['description'],
+    '#description' => t('A description of the term. In core, this is used only for link titles and RSS descriptions.'));
+
+  $form['advanced']['synonyms'] = array(
+    '#type' => 'textarea',
+    '#title' => t('Synonyms'),
+    '#default_value' => implode("\n", taxonomy_get_synonyms($edit['tid'])),
+    '#description' => t('<a href="@help-url">Synonyms</a> of this term, one synonym per line. Not used by core modules.', array('@help-url' => url('admin/help/taxonomy', NULL, NULL, 'synonyms')))
+  );
   if ($vocabulary->relations) {
-    $form['relations'] = _taxonomy_term_select(t('Related terms'), 'relations', array_keys(taxonomy_get_related($edit['tid'])), $vocabulary_id, NULL, 1, '<'. t('none') .'>', array($edit['tid']));
-  }
-
-  $form['synonyms'] = array('#type' => 'textarea', '#title' => t('Synonyms'), '#default_value' => implode("\n", taxonomy_get_synonyms($edit['tid'])), '#description' => t('<a href="@help-url">Synonyms</a> of this term, one synonym per line.', array('@help-url' => url('admin/help/taxonomy', NULL, NULL, 'synonyms'))));
-  $form['weight'] = array('#type' => 'weight', '#title' => t('Weight'), '#default_value' => $edit['weight'], '#description' => t('In listings, the heavier terms will sink and the lighter terms will be positioned nearer the top.'));
-
-  // Add extra term form elements.
-  $extra = module_invoke_all('taxonomy', 'term', 'vocabulary');
-  if (is_array($extra)) {
-    foreach ($extra as $key => $element) {
-      $extra[$key]['#weight'] = isset($extra[$key]['#weight']) ? $extra[$key]['#weight'] : -18;
-    }
-    $form = array_merge($form, $extra);
+    $form['advanced']['relations'] = _taxonomy_term_select(t('Related terms'), 'relations', array_keys(taxonomy_get_related($edit['tid'])), $vocabulary_id, t('Relations are not used by core modules.'), 1, '<'. t('none') .'>', array($edit['tid']));
   }