diff --git a/classes/emailcatcher.class.php b/classes/emailcatcher.class.php
index 739376f6edcf71bca1b95c961eb99521fe3ce0f9..ba87f26f5cf86a45643ae84cb82049945850abb1 100644
--- a/classes/emailcatcher.class.php
+++ b/classes/emailcatcher.class.php
@@ -1,4 +1,18 @@
 <?php
+/**
+ * =======================================================================
+ * 
+ * PHP EMAIL CATCHER
+ * Read emails sent by mail() and browse them
+ * 
+ * 👤 Author: Axel Hahn, Institute for Medical Education, University of Bern
+ * 📄 Source: <https://git-repo.iml.unibe.ch/iml-open-source/php-emailcatcher>
+ * 📜 License: GNU GPL 3.0
+ * 
+ * ----------------------------------------------------------------------
+ * 2024-10-08  v0.1  initial version
+ * =======================================================================
+ */
 
 class emailcatcher
 {
diff --git a/php-sendmail.php b/php-sendmail.php
index b651030495dc8c7a7f866ee48ae4a8ad2c9b1f61..ed2dc5bb1b6c0ab560d8c514ff00e80cae0b3042 100755
--- a/php-sendmail.php
+++ b/php-sendmail.php
@@ -1,5 +1,19 @@
 #!/usr/local/bin/php -q
 <?php
+/**
+ * =======================================================================
+ * 
+ * PHP EMAIL CATCHER
+ * Read emails sent by mail() and browse them
+ * 
+ * 👤 Author: Axel Hahn, Institute for Medical Education, University of Bern
+ * 📄 Source: <https://git-repo.iml.unibe.ch/iml-open-source/php-emailcatcher>
+ * 📜 License: GNU GPL 3.0
+ * 
+ * ----------------------------------------------------------------------
+ * 2024-10-08  v0.1  initial version
+ * =======================================================================
+ */
 
 require_once('classes/emailcatcher.class.php');
 
diff --git a/viewer.css b/viewer.css
index 5e030796c6804b606a07b9a2bbb8dcfd472da75e..fefa78c848ef2bbc1d5ce05f1dedb82275e96744 100644
--- a/viewer.css
+++ b/viewer.css
@@ -38,6 +38,19 @@ footer{
     padding: 1em;
     opacity: 0.6;
 }
+
+h1{
+    background-color: #ebb;
+    background: linear-gradient(to right, #9be, #fcc);
+    margin: 0;
+    padding-left: 0.5em;
+    border-bottom: 4px solid rgba(0,0,0,0.05);
+}
+h1 a{
+    color:#424;
+    text-decoration: none;
+}
+
 pre{
     background-color: #e8ecec;
     overflow: scroll;
@@ -63,17 +76,7 @@ pre{
     float: right;
 }
 
-h1{
-    background-color: #ebb;
-    background: linear-gradient(to right, #9be, #fcc);
-    margin: 0;
-    padding-left: 0.5em;
-    border-bottom: 4px solid rgba(0,0,0,0.05);
-}
-h1 a{
-    color:#424;
-    text-decoration: none;
-}
+
 #messages{
     background-color: #f0f0f0;
     border: 2px solid rgba(0,0,0,0.1);
diff --git a/viewer.php b/viewer.php
index 0d953a25575962ed68c328aba6eb4ce15a965e3a..ae44de36ed77eb4b363f30bc1cdaf2257632a953 100644
--- a/viewer.php
+++ b/viewer.php
@@ -1,5 +1,18 @@
 <?php
-
+/**
+ * =======================================================================
+ * 
+ * PHP EMAIL CATCHER
+ * Read emails sent by mail() and browse them
+ * 
+ * 👤 Author: Axel Hahn, Institute for Medical Education, University of Bern
+ * 📄 Source: <https://git-repo.iml.unibe.ch/iml-open-source/php-emailcatcher>
+ * 📜 License: GNU GPL 3.0
+ * 
+ * ----------------------------------------------------------------------
+ * 2024-10-08  v0.1  initial version
+ * =======================================================================
+ */
 require_once('classes/emailcatcher.class.php');