diff --git a/core/lib/Drupal/Core/Render/Element/MoreLink.php b/core/lib/Drupal/Core/Render/Element/MoreLink.php
index 6551abb..fbdc62f 100644
--- a/core/lib/Drupal/Core/Render/Element/MoreLink.php
+++ b/core/lib/Drupal/Core/Render/Element/MoreLink.php
@@ -8,7 +8,7 @@
 namespace Drupal\Core\Render\Element;
 
 /**
- * Provides a link render element.
+ * Provides a link render element for a "more" link, like those used in blocks.
  *
  * @RenderElement("more_link")
  */
diff --git a/core/lib/Drupal/Core/Render/Element/SystemCompactLink.php b/core/lib/Drupal/Core/Render/Element/SystemCompactLink.php
index ae68cd7..7b711f5 100644
--- a/core/lib/Drupal/Core/Render/Element/SystemCompactLink.php
+++ b/core/lib/Drupal/Core/Render/Element/SystemCompactLink.php
@@ -8,7 +8,7 @@
 namespace Drupal\Core\Render\Element;
 
 /**
- * Provides a link render element.
+ * Provides a link render element to show or hide inline help descriptions.
  *
  * @RenderElement("system_compact_link")
  */