diff --git a/back/pialert.conf b/back/pialert.conf
index 393f316b..6df0ed41 100644
--- a/back/pialert.conf
+++ b/back/pialert.conf
@@ -1,3 +1,12 @@
+#-------------------------------------------------------------------------------
+#  Pi.Alert  v2.56  /  2021-01-15
+#  Open Source Network Guard / WIFI & LAN intrusion detector 
+#
+#  pialert.conf - Back module. Configuration file
+#-------------------------------------------------------------------------------
+#  Puche 2021        pi.alert.application@gmail.com        GNU GPLv3
+#-------------------------------------------------------------------------------
+
 VERSION           = '2.56'
 VERSION_YEAR      = '2021'
 VERSION_DATE      = '2021-01-15'
diff --git a/back/pialert.cron b/back/pialert.cron
index d33bae58..2ac0727b 100644
--- a/back/pialert.cron
+++ b/back/pialert.cron
@@ -1,6 +1,12 @@
+#-------------------------------------------------------------------------------
+#  Pi.Alert
+#  Open Source Network Guard / WIFI & LAN intrusion detector 
 #
-# Pi.Alert cron
-#
+#  pialert.cron - Back module. Crontab jobs
+#-------------------------------------------------------------------------------
+#  Puche 2021        pi.alert.application@gmail.com        GNU GPLv3
+#-------------------------------------------------------------------------------
+
 0 3 * * 1      python ~/pialert/back/pialert.py update_vendors >~/pialert/log/pialert.vendors.log  2>&1
 */1 * * * *    python ~/pialert/back/pialert.py internet_IP    >~/pialert/log/pialert.IP.log       2>&1
 */5 * * * *    python ~/pialert/back/pialert.py 1              >~/pialert/log/pialert.1.log        2>&1
diff --git a/back/pialert.py b/back/pialert.py
index 899c536e..93af5afa 100644
--- a/back/pialert.py
+++ b/back/pialert.py
@@ -1,8 +1,13 @@
 #!/usr/bin/env python
 #
-# Pi.Alert v2.56  /  2021-01-15
-# Puche 2021
-# GNU GPLv3
+#-------------------------------------------------------------------------------
+#  Pi.Alert  v2.56  /  2021-01-15
+#  Open Source Network Guard / WIFI & LAN intrusion detector 
+#
+#  pialert.py - Back module. Network scanner
+#-------------------------------------------------------------------------------
+#  Puche 2021        pi.alert.application@gmail.com        GNU GPLv3
+#-------------------------------------------------------------------------------
 
 
 #===============================================================================
diff --git a/back/report_template.html b/back/report_template.html
index 9fb4834c..0bc0ecc0 100644
--- a/back/report_template.html
+++ b/back/report_template.html
@@ -1,3 +1,12 @@
+<!-- ---------------------------------------------------------------------------
+#  Pi.Alert
+#  Open Source Network Guard / WIFI & LAN intrusion detector 
+#
+#  repot_template.html - Back module. Template to email reporting in HTML format
+#-------------------------------------------------------------------------------
+#  Puche 2021        pi.alert.application@gmail.com        GNU GPLv3
+#--------------------------------------------------------------------------- -->
+
 <html>
 
 <head>
@@ -101,9 +110,9 @@
         <td>
             <table width=100% border=0 bgcolor=#70AD47 cellpadding=5px cellspacing=0 style="border-collapse: collapse; font-size: 12px; font-weight: bold; color:#385723">
                <tr>
-                    <td width=25% style="text-align:Left">   Puche <PIALERT_YEAR></td>
-                    <td width=50% style="text-align:center"> Pi.Alert <PIALERT_VERSION> &nbsp; / &nbsp; <PIALERT_VERSION_DATE>  </td>
-                    <td width=25% style="text-align:right">  GNU GPLv3</td>
+                    <td width=25% style="text-align:Left"> <span style="display:inline-block; transform: rotate(180deg)">&copy;</span> <PIALERT_YEAR> Puche</td>
+                    <td width=50% style="text-align:center"> Pi.Alert <PIALERT_VERSION> &nbsp; &nbsp; (<PIALERT_VERSION_DATE>)  </td>
+                    <td width=25% style="text-align:right"> GNU GPLv3</td>
                 </tr>
             </table>
         </td>
diff --git a/back/report_template.txt b/back/report_template.txt
index afe9d808..0d777f57 100644
--- a/back/report_template.txt
+++ b/back/report_template.txt
@@ -24,4 +24,4 @@ Events
 <TABLE_EVENTS>
 </SECTION_EVENTS>
 ----------------------------------------------------------------------
-Puche <PIALERT_YEAR>            Pi.Alert <PIALERT_VERSION> / <PIALERT_VERSION_DATE>             GNU GPLv3
+(?) <PIALERT_YEAR> Puche          Pi.Alert <PIALERT_VERSION> (<PIALERT_VERSION_DATE>)           GNU GPLv3
diff --git a/back/vendors_db_update.sh b/back/vendors_db_update.sh
index 1f72b60b..f7d2fd47 100644
--- a/back/vendors_db_update.sh
+++ b/back/vendors_db_update.sh
@@ -1,10 +1,18 @@
 #!/bin/sh
+# ------------------------------------------------------------------------------
+#  Pi.Alert
+#  Open Source Network Guard / WIFI & LAN intrusion detector 
 #
-# Update MAC Vendor DB
-#
-# /usr/share/arp-scan
-# /usr/share/ieee-data
-# /var/lib/ieee-data
+#  vendors_db_update.sh - Back module. IEEE Vendors db update
+# ------------------------------------------------------------------------------
+#  Puche 2021        pi.alert.application@gmail.com        GNU GPLv3
+# ------------------------------------------------------------------------------
+
+# ----------------------------------------------------------------------
+#  Main directories to update:
+#    /usr/share/arp-scan
+#    /usr/share/ieee-data
+#    /var/lib/ieee-data
 # ----------------------------------------------------------------------
 
 
diff --git a/front/php/templates/footer.php b/front/php/templates/footer.php
index 3927ecac..17efec20 100644
--- a/front/php/templates/footer.php
+++ b/front/php/templates/footer.php
@@ -1,3 +1,11 @@
+<!-- ---------------------------------------------------------------------------
+#  Pi.Alert
+#  Open Source Network Guard / WIFI & LAN intrusion detector 
+#
+#  footer.php - Front module. Common footer to all the front pages 
+#-------------------------------------------------------------------------------
+#  Puche 2021        pi.alert.application@gmail.com        GNU GPLv3
+#--------------------------------------------------------------------------- -->
 
   <!-- Main Footer -->
   <footer class="main-footer">
@@ -16,12 +24,12 @@
     <div class="pull-right no-hidden-xs">
 
     <!-- 
-      Pi.alert&nbsp&nbsp2.50&nbsp&nbsp<small>(2019-12-30)</small>
+      Pi.Alert&nbsp&nbsp2.50&nbsp&nbsp<small>(2019-12-30)</small>
     -->
     <?php
       $conf_file = '../back/pialert.conf';
       $conf_data = parse_ini_file($conf_file);
-      echo 'Pi.alert&nbsp&nbsp'. $conf_data['VERSION'] .'&nbsp&nbsp<small>('. $conf_data['VERSION_DATE'] .')</small>';
+      echo 'Pi.Alert&nbsp&nbsp'. $conf_data['VERSION'] .'&nbsp&nbsp<small>('. $conf_data['VERSION_DATE'] .')</small>';
     ?>
     </div>
   </footer>
diff --git a/front/php/templates/header.php b/front/php/templates/header.php
index 4f5de26b..c3c9087a 100644
--- a/front/php/templates/header.php
+++ b/front/php/templates/header.php
@@ -1,9 +1,18 @@
+<!-- ---------------------------------------------------------------------------
+#  Pi.Alert
+#  Open Source Network Guard / WIFI & LAN intrusion detector 
+#
+#  header.php - Front module. Common header to all the front pages 
+#-------------------------------------------------------------------------------
+#  Puche 2021        pi.alert.application@gmail.com        GNU GPLv3
+#--------------------------------------------------------------------------- -->
+
 <!DOCTYPE html> 
 <html>
 <head>
   <meta charset="utf-8">
   <meta http-equiv="X-UA-Compatible" content="IE=edge">
-  <title>Pi.alert</title>
+  <title>Pi.Alert</title>
   <!-- Tell the browser to be responsive to screen width -->
   <meta content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no" name="viewport">
   <!-- Bootstrap 3.3.7 -->
@@ -21,7 +30,7 @@
   <link rel="stylesheet" href="lib/AdminLTE/dist/css/skins/skin-yellow-light.min.css">
 
   
-  <!-- Pi.alert CSS -->
+  <!-- Pi.Alert CSS -->
   <link rel="stylesheet" href="css/pialert.css">
 
   <!-- HTML5 Shim and Respond.js IE8 support of HTML5 elements and media queries -->
@@ -52,7 +61,7 @@
       <!-- mini logo for sidebar mini 50x50 pixels -->
       <span class="logo-mini">P<b>a</b></span>
       <!-- logo for regular state and mobile devices -->
-      <span class="logo-lg">Pi<b>.alert</b></span>
+      <span class="logo-lg">Pi<b>.Alert</b></span>
     </a>
 
     <!-- Header Navbar -->
@@ -73,14 +82,14 @@
             <!-- Menu Toggle Button -->
             <a href="#" class="dropdown-toggle" data-toggle="dropdown">
               <!-- The user image in the navbar-->
-              <img src="img/pialertLogoWhite.png" class="user-image" style="border-radius: initial" alt="Pi.alert Logo">
+              <img src="img/pialertLogoWhite.png" class="user-image" style="border-radius: initial" alt="Pi.Alert Logo">
               <!-- hidden-xs hides the username on small devices so only the image appears. -->
-              <span class="hidden-xs">Pi.alert</span>
+              <span class="hidden-xs">Pi.Alert</span>
             </a>
             <ul class="dropdown-menu">
               <!-- The user image in the menu -->
               <li class="user-header">
-                <img src="img/pialertLogoWhite.png" class="img-circle" alt="Pi.alert Logo" style="border-color:transparent">
+                <img src="img/pialertLogoWhite.png" class="img-circle" alt="Pi.Alert Logo" style="border-color:transparent">
 
                 <p>
                   Open Source Network Guard
@@ -91,15 +100,14 @@
               <li class="user-body">
                 <div class="row">
                   <div class="col-xs-4 text-center">
+                    <a target="_blank" href="https://github.com/pucherot/Pi.Alert">GitHub Pi.Alert</a>
                   </div>
                   <div class="col-xs-4 text-center">
-                    <a href="https://github.com/pucherot/Pi.Alert">GitHub</a>
+                    <a href="mailto:pi.alert.application@gmail.com">email Support</a>
                   </div>
-                  <!--
                   <div class="col-xs-4 text-center">
-                    <a href="https://github.com/pucherot/Pi.Alert">Pi.Alert</a>
+                    <a target="_blank" href="https://github.com/pucherot/Pi.Alert/blob/main/LICENSE.txt">GNU GPLv3</a>
                   </div>
-                  -->
                   <!--
                   <div class="col-xs-4 text-center">
                     <a href="#">Updates</a>
@@ -123,11 +131,11 @@
       <!-- Sidebar user panel (optional) -->
       <div class="user-panel">
         <a href="/" class="logo">
-          <img src="img/pialertLogoGray80.png" class="img-responsive" alt="Pi.alert Logo"/>
+          <img src="img/pialertLogoGray80.png" class="img-responsive" alt="Pi.Alert Logo"/>
         </a>
         <div class="pull-left image">
 <!--
-          <br><img src="img/pialertLogoBlack.png" class="img-responsive" alt="Pi.alert Logo" style="display: table; table-layout: fixed;" />
+          <br><img src="img/pialertLogoBlack.png" class="img-responsive" alt="Pi.Alert Logo" style="display: table; table-layout: fixed;" />
 -->
         </div>
 
