diff --git a/samples/3d-camera-center/index.html b/samples/3d-camera-center/index.html
index 51d8985c..501cf1b2 100644
--- a/samples/3d-camera-center/index.html
+++ b/samples/3d-camera-center/index.html
@@ -4,7 +4,7 @@
  Copyright 2026 Google LLC. All Rights Reserved.
  SPDX-License-Identifier: Apache-2.0
 -->
-<!-- START maps_3d_camera_center -->
+<!-- [START maps_3d_camera_center] -->
 <html>
     <head>
         <title>3D Camera Position</title>
@@ -23,7 +23,7 @@
 
         <script
             async
-            src="https://maps.googleapis.com/maps/api/js?key=AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8&v=beta&libraries=maps3d&internal_usage_attribution_ids=gmp_git_jsapisamples_v1_3d-camera"></script>
+            src="https://maps.googleapis.com/maps/api/js?key=AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8&v=beta&libraries=maps3d"></script>
     </body>
 </html>
-<!-- END maps_3d_camera_center -->
+<!-- [END maps_3d_camera_center] -->
diff --git a/samples/3d-marker-html/index.html b/samples/3d-marker-html/index.html
index 0091c7ea..47c122ab 100644
--- a/samples/3d-marker-html/index.html
+++ b/samples/3d-marker-html/index.html
@@ -4,7 +4,7 @@
  Copyright 2026 Google LLC. All Rights Reserved.
  SPDX-License-Identifier: Apache-2.0
 -->
-<!-- START maps_3d_marker_html -->
+<!-- [START maps_3d_marker_html] -->
 <html>
     <head>
         <title>3D Marker HTML</title>
@@ -22,4 +22,4 @@
             src="https://maps.googleapis.com/maps/api/js?key=AIzaSyA6myHzS10YXdcazAFalmXvDkrYCp5cLc8&v=beta&libraries=maps3d&internal_usage_attribution_ids=gmp_git_jsapisamples_v1_3d-markers"></script>
     </body>
 </html>
-<!-- END maps_3d_marker_html -->
+<!-- [END maps_3d_marker_html] -->
diff --git a/samples/web-components-map/index.html b/samples/web-components-map/index.html
index 07c242c2..6529af7c 100644
--- a/samples/web-components-map/index.html
+++ b/samples/web-components-map/index.html
@@ -4,7 +4,7 @@
  Copyright 2025 Google LLC. All Rights Reserved.
  SPDX-License-Identifier: Apache-2.0
 -->
-<!-- START maps_web_components_map -->
+<!-- [START maps_web_components_map] -->
 <html>
     <head>
         <title>Add a Map using HTML</title>
@@ -16,13 +16,13 @@
             defer></script>
     </head>
     <body>
-        <!-- START maps_web_components_map_gmpmap -->
+        <!-- [START maps_web_components_map_gmpmap] -->
         <gmp-map
             center="37.4220656,-122.0840897"
             zoom="10"
             map-id="DEMO_MAP_ID"
             style="height: 500px"></gmp-map>
-        <!-- END maps_web_components_map_gmpmap -->
+        <!-- [END maps_web_components_map_gmpmap] -->
     </body>
 </html>
-<!-- END maps_web_components_map -->
+<!-- [END maps_web_components_map] -->
diff --git a/samples/web-components-markers/index.html b/samples/web-components-markers/index.html
index 94e67c25..aff1da73 100644
--- a/samples/web-components-markers/index.html
+++ b/samples/web-components-markers/index.html
@@ -4,7 +4,7 @@
  Copyright 2025 Google LLC. All Rights Reserved.
  SPDX-License-Identifier: Apache-2.0
 -->
-<!-- START maps_web_components_markers -->
+<!-- [START maps_web_components_markers] -->
 <html>
     <head>
         <title>Add a Map with Markers using HTML</title>
@@ -25,7 +25,7 @@
             defer></script>
     </head>
     <body>
-        <!-- START maps_web_components_markers_div -->
+        <!-- [START maps_web_components_markers_div] -->
         <gmp-map
             center="41.027748173921374, -92.41852445367961"
             zoom="13"
@@ -34,7 +34,7 @@
                 position="41.027748173921374, -92.41852445367961"
                 title="Ottumwa, IA"></gmp-advanced-marker>
         </gmp-map>
-        <!-- END maps_web_components_markers_div -->
+        <!-- [END maps_web_components_markers_div] -->
     </body>
 </html>
-<!-- END maps_web_components_markers -->
+<!-- [END maps_web_components_markers] -->
\ No newline at end of file
