diff --git a/site/collections/notes.php b/site/collections/notes.php
index 5d298a7..a40e79f 100755
--- a/site/collections/notes.php
+++ b/site/collections/notes.php
@@ -1,5 +1,11 @@
 <?php
-
+/**
+ * Collections help with keeping your code DRY 
+ * if you need to reuse the same set up pages, files or users in multiple places across your site.
+ * 
+ * More about collections:
+ * http://getkirby.test/docs/guide/templates/collections
+ */
 return function () {
     return page('notes')
         ->children()
diff --git a/site/controllers/notes.php b/site/controllers/notes.php
index 101573d..2063568 100755
--- a/site/controllers/notes.php
+++ b/site/controllers/notes.php
@@ -12,6 +12,12 @@
 return function ($page) {
 
     $tag   = urldecode(param('tag'));
+    /**
+     * We use the collection helper to fetch the notes collection defined in `/site/collections/notes.php`
+     * 
+     * More about collections:
+     * http://getkirby.test/docs/guide/templates/collections
+     */
     $notes = collection('notes');
 
     if (empty($tag) === false) {