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function fixed_field_help($path, $arg) { switch($path) {  case "admin/help#fixed_field":   /** @ToDo http://drupal.org/node/632280 */   return '<p>'.  t("Displays a field with fixed content") .'</p>';   break; }}/** * Implements hook_field_info(). */function fixed_field_field_info() { return array(  'fixed_field' => array(  'label' => t('Fixed'),  'description' => t('A fixed field'),  ), );}