diff --git a/core/modules/help_topics/help_topics/user.security_account_settings.html.twig b/core/modules/help_topics/help_topics/user.security_account_settings.html.twig
index d524596..5e21da7 100644
--- a/core/modules/help_topics/help_topics/user.security_account_settings.html.twig
+++ b/core/modules/help_topics/help_topics/user.security_account_settings.html.twig
@@ -13,6 +13,7 @@ related:
 </ul>
 <h2>{% trans %}What are variables in email message text?{% endtrans %}</h2>
 <p>{% trans %}<em>Variables</em> are short text strings, enclosed in square brackets [], that you can insert into configured email message text. When an individual message is generated, data from your site is substituted for the variables. Some commonly-used variables are:{% endtrans %}</p>
+{# ALLOW-UNTRANSLATED #}
 <dl>
   <dt>[site:name]</dt>
   <dd>{% trans %}The name of your web site.{% endtrans %}</dd>
@@ -28,7 +29,8 @@ related:
   <dd>{% trans %}The user's email address.{% endtrans %}</dd>
   <dt>[user:one-time-login-url]</dt>
   <dd>{% trans %}An expiring URL that a user can use to log in once, if they need to reset their password.{% endtrans %}</dd>
-</ul>
+</dl>
+{# END-ALLOW-UNTRANSLATED #}
 <h2>{% trans %}Steps{% endtrans %}</h2>
 <ol>
   <li>{% trans %}In the <em>Manage</em> administrative menu, navigate to <em>Configuration</em> &gt; <em>People</em> &gt; <em>Account settings</em>.{% endtrans %}</li>
diff --git a/core/modules/help_topics/tests/src/Functional/HelpTopicsSyntaxTest.php b/core/modules/help_topics/tests/src/Functional/HelpTopicsSyntaxTest.php
index a8ef4eb..5a569d4 100644
--- a/core/modules/help_topics/tests/src/Functional/HelpTopicsSyntaxTest.php
+++ b/core/modules/help_topics/tests/src/Functional/HelpTopicsSyntaxTest.php
@@ -128,9 +128,14 @@ protected function verifyTopic($id, $definitions, $response = 200) {
     $body = trim($body);
     $this->assertNotEmpty($body, 'Topic ' . $id . ' Twig file contains some text outside of front matter');
 
-    // Verify that if we remove all the translated text, whitespace, and
-    // HTML tags, there is nothing left (that is, all text is translated).
+    // Verify that if we remove all the translated text, whitespace, comments,
+    // and HTML tags, there is nothing left (that is, all text is translated).
+    // Also allow sections bracketed by
+    // {# ALLOW-UNTRANSLATED #}...{# END-ALLOW-UNTRANSLATED #}
+    // to be untranslated.
     $text = preg_replace('|\{\% trans \%\}.*\{\% endtrans \%\}|sU', '', $body);
+    $text = preg_replace('|\{# ALLOW-UNTRANSLATED #\}.*\{# END-ALLOW-UNTRANSLATED #\}|sU', '', $body);
+    $text = preg_replace('|\{# .* #\}|sU', '', $body);
     $text = strip_tags($text);
     $text = preg_replace('|\s+|', '', $text);
     $this->assertEmpty($text, 'Topic ' . $id . ' Twig file has all of its text translated');