Issue #1827200 by benjifisher: Fix up documentation for system_authorized_init()

modules/system/system.module

@@ -1740,16 +1740,27 @@ function _system_themes_access($theme) {
 /**
  * Setup a given callback to run via authorize.php with elevated privileges.
  *
- * To use authorize.php, certain variables must be stashed into $_SESSION.
- * This function sets up all the necessary $_SESSION variables, then returns
- * the full path to authorize.php so the caller can redirect to authorize.php.
- * That initiates the workflow that will eventually lead to the callback being
- * invoked. The callback will be invoked at a low bootstrap level, without all
- * modules being invoked, so it needs to be careful not to assume any code
- * exists.
+ * To use authorize.php, certain variables must be stashed into $_SESSION. This
+ * function sets up all the necessary $_SESSION variables. The calling function
+ * should then redirect to authorize.php, using the full path returned by
+ * system_authorized_get_url(). That initiates the workflow that will eventually
+ * lead to the callback being invoked. The callback will be invoked at a low
+ * bootstrap level, without all modules being invoked, so it needs to be careful
+ * not to assume any code exists. Example (system_authorized_run()):
+ * @code
+ *   system_authorized_init($callback, $file, $arguments, $page_title);
+ *   drupal_goto(system_authorized_get_url());
+ * @endcode
+ * Example (update_manager_install_form_submit()):
+ * @code
+ *  system_authorized_init('update_authorize_run_install',
+ *    drupal_get_path('module', 'update') . '/update.authorize.inc',
+ *    $arguments, t('Update manager'));
+ *  $form_state['redirect'] = system_authorized_get_url();
+ * @endcode
  *
  * @param $callback
- *   The name of the function to invoke one the user authorizes the operation.
+ *   The name of the function to invoke once the user authorizes the operation.
  * @param $file
  *   The full path to the file where the callback function is implemented.
  * @param $arguments
@@ -1786,6 +1797,8 @@ function system_authorized_init($callback, $file, $arguments = array(), $page_ti
  *   Optional array of options to pass to url().
  * @return
  *   The full URL to authorize.php, using HTTPS if available.
+ *
+ * @see system_authorized_init()
  */
 function system_authorized_get_url(array $options = array()) {
   global $base_url;