Add help information.

realname.admin.inc

@@ -16,7 +16,12 @@ function realname_settings_form($form, &$form_state) {
     '#min_tokens' => 1,
     '#required' => TRUE,
     '#maxlength' => 256,
-  );
+    '#description' => t('This pattern will be used to construct Realnames for all users.
+      <br /><br />
+      Note that if it is changed, all current Realnames will be deleted and the 
+      list in the database will be rebuilt as needed.
+      '),
+    );
 
   // Add the token tree UI.
   $form['token_help'] = array(
@@ -24,7 +29,7 @@ function realname_settings_form($form, &$form_state) {
     '#token_types' => array('user'),
     '#global_types' => FALSE,
     '#dialog' => TRUE,
-  );
+    );
 
   $form['#submit'][] = 'realname_settings_form_submit';
   return system_settings_form($form);

realname.module

@@ -13,6 +13,22 @@
  * @defgroup realname Real name API
  */
 
+/**
+ * Implements hook_help().
+ */
+function realname_help($path, $arg) {
+  switch ($path) {
+    // Main module help for the Realname module.
+    case 'admin/config/people/realname':
+    case 'admin/help#realname':
+      return '<p>' 
+        . t('A Real Name is what the site developer decides that users\' names 
+        should look like. It is constructed from various tokens that are available 
+        within the site.')
+        . '</p>';
+  }
+}
+
 /**
  * Implements hook_permission().
  */