nobots.module

<?php
/**
 * @file
 * Code for the No Bots module.
 */

/**
 *  Implements hook_help().
 */
function nobots_help($route_name, \Drupal\Core\Routing\CurrentRouteMatch $route_match) {
  switch ($route_name) {
    case 'help.page.nobots':
      $output = "<h3>" . t("About the No Bots Module") . "</h3>";
      $output .= "<p>" . t("This module blocks (well-behaved) search engine robots from crawling, indexing, or archiving your site by setting a &quot;X-Robots-Tag: noindex,nofollow,noarchive&quot; HTTP header.") . "</p>";
      $output .= "<p>" . t("Enable the module to block search engine robots. Disable the module to let them crawl your site.") . "</p>";
      return $output;
  }
}