diff --git a/update.php b/update.php
index 40c90b4..94bc961 100644
--- a/update.php
+++ b/update.php
@@ -1,10 +1,15 @@
 <?php
-include 'backgroundupdate.php';
-echo "freshly updated the session data<br />";
-if(isset($_GET['page'])) {
-    echo "Going to ".$_GET['page'];
-    echo '<meta http-equiv="refresh" content="0; URL='.$_GET['page'].'">';
-} else {
-    die();
+/*
+This is just a little helper script if you dont want to include a whole backgroundupdate in the page, but after the action you want to go over the update path.
+
+example: update.php?page=start.php does an update of your session and then redirects you directly to start.php
+*/
+include 'backgroundupdate.php'; //getting the real update script in the background
+echo "freshly updated the session data<br />"; //printing a short message
+if(isset($_GET['page'])) { //checks if "?page=" is set in the url
+    echo "Going to ".$_GET['page']; //printing the next hop
+    echo '<meta http-equiv="refresh" content="0; URL='.$_GET['page'].'">'; //going to the page specified in the url.
+} else { //if there isn't anything in the header, just die already!
+    die(); 
 }
 ?>
\ No newline at end of file