drupal/modules/admin.module

<?php
// $Id$

function status($message) {
  if ($message) {
    return "<strong>Status:</strong> $message<hr />\n";
  }
}

function admin_help($section) {
  switch ($section) {
    case "admin/system/modules#description":
      return t("Handles the administration pages.");
    case "admin":
      return t("Welcome to the administration section. Below are the most recent system events.");
    case "admin/overview":
      return t("This is a complete overview of the site administration page.");
  }
}

function admin_link($type) {
  if ($type == "system" && user_access("access administration pages")) {
    menu("admin", t("administer"), "admin_admin", 9);
  }
}

function admin_admin() {
  if (user_access("access administration pages")) {
    print theme("header");
    print watchdog_overview("actions");
    print theme("footer");
  }
  else {
    print theme("header");
    print message_access();
    print theme("footer");
  }
}

?>