$output.='<p>'.$this->t('The Navigation Top Bar module is a Feature Flag module which, when enabled, renders the experimental navigation top bar.').'</p>';
$output.='<p>'.$this->t('The top bar provides relevant administrative information and tasks for the current page. It is not feature complete nor fully functional.').'</p>';
$output.='<p>'.$this->t('Leaving this module enabled can affect both admin and front-end pages layouts and blocks like Primary admin actions, whose content might be moved to te top bar.').'</p>';
$output.='<p>'.$this->t('It is recommended to leave this module off while it is under active development and experimental phase.').'</p>';
$output.='<p>'.$this->t('For more information, see the <a href=":docs">online documentation for the Navigation Top Bar module</a>.',[':docs'=>'https://www.drupal.org/project/navigation']).'</p>';