diff --git a/src/Form/KlaroAppForm.php b/src/Form/KlaroAppForm.php
index 0111257196326ba7fcf315412ab3927e2e2031db..f17c63e08ca37fb811b1b602c008fa2bbf6ba9a2 100644
--- a/src/Form/KlaroAppForm.php
+++ b/src/Form/KlaroAppForm.php
@@ -344,8 +344,9 @@ class KlaroAppForm extends EntityForm {
     $form['advanced']['files_wrapper']['att'] = [
       '#type' => 'textarea',
       '#title' => $this->t('Attachments', [], ['context' => 'klaro']),
-      '#description' => $this->t('Some Javascript files are added as <em>page attachments</em> with a unique identifier. If Klaro! should take control over these scripts, enter their IDs here, one per line.', [], ['context' => 'klaro']),
+      '#description' => $this->t('Some Javascript files are added as <em>page attachments</em> with a unique identifier. If Klaro! should take control over these scripts, enter their IDs here, one per line.<br>See <a href="@website">this example</a> for <em>hello-world</em>.', ['@website' => 'https://www.drupal.org/node/2274843#entire-page'], ['context' => 'klaro']),
       '#default_value' => implode("\n", $app->attachments()),
+      '#placeholder' => 'hello-world',
     ];
 
     return $form;