diff --git a/src/core/init/core.php b/src/core/init/core.php
index f5af85c..5018a07 100644
--- a/src/core/init/core.php
+++ b/src/core/init/core.php
@@ -7,6 +7,7 @@
   }
 
   public static function get_post_data(){
+    // Gets the POST request into an array
     $data = [];
     foreach($_POST as $key=>$value){
       $data[$key] = $value;
@@ -14,6 +15,7 @@
     return $data;
   }
   public static function get_get_data(){
+    // Gets the GET request into an array
     $data = [];
     foreach($_GET as $key=>$value){
       $data[$key] = $value;
@@ -21,6 +23,7 @@
     return $data;
   }
   public static function random_string($length = 10) {
+    // Generates a random string - unused currently
     $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
     $charactersLength = strlen($characters);
     $randomString = '';
@@ -30,6 +33,7 @@
     return $randomString;
   }
   public static function start_session(){
+    // Starts a session, unused currently
     session_start();
   }
   public static function end_session($redirect = true){
@@ -43,6 +47,7 @@
     }
   }
   public static function get_current_git_commit( $branch='master' ) {
+    // Gets the current git commit ID - for testing
     $gitref = sprintf( self::root_dir().'/../.git/refs/heads/%s', $branch );
     if ( file_exists($gitref) && $hash = file_get_contents( $gitref ) ) {
       return trim($hash);
@@ -51,6 +56,7 @@
     }
   }
   public static function full_url(){
+    // Gets the full requested URL
     if(isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] === 'on') {
       $addr = "https";
     } else {
diff --git a/src/core/init/errors.php b/src/core/init/errors.php
index c3ec731..472b610 100644
--- a/src/core/init/errors.php
+++ b/src/core/init/errors.php
@@ -3,6 +3,7 @@ class Errors {
   public function throw_error($err){
     header('Content-Type: application/json');  // <-- header declaration
     $error = false;
+    // Some Saved error messages - more to be added
     switch ($err) {
       case "NotFound":
         $error = new ErrorMessage("Error","404","Not Found");
@@ -14,6 +15,7 @@ class Errors {
         $error = new ErrorMessage("Error","500","Internal Error");
         break;
     }
+    // Output error in JSON format
     echo json_encode($error, true);    // <--- encode
   }
 }
diff --git a/src/core/init/loader.php b/src/core/init/loader.php
index 47ea6f7..ea9bb70 100644
--- a/src/core/init/loader.php
+++ b/src/core/init/loader.php
@@ -1,11 +1,14 @@
 <?php
+// require all necessary files
 require ("core.php");
 require ("user.php");
 require ("responder.php");
 require ("errors.php");
+
 class Loader {
   public function request_page(){
     // Check if user is authenticated and go to the relevant section
+    // Currently no authentication is in place so should always be true
     if (User::is_authenticated()){
       $this->go_to_page(true);
     } else {
@@ -20,6 +23,7 @@ class Loader {
       default:
         $p = $this->get_page_name();
         if(substr($p,0,1) == "/") {
+          // Remove first slash if exists
           Core::$CurrentPage = substr($p,1);
         } else {
           Core::$CurrentPage = $p;
diff --git a/src/core/init/responder.php b/src/core/init/responder.php
index 80614bf..faa7d43 100644
--- a/src/core/init/responder.php
+++ b/src/core/init/responder.php
@@ -23,6 +23,7 @@ class Responder {
       case "ms-json":
         header('Content-Type: application/json');
         // Send json encoded response
+        // This is currently an undocumented file from Microsoft so it's not ready yet
         echo json_encode($response->content, true);
         break;
       case "xml":
@@ -35,6 +36,7 @@ class Responder {
   }
   private function get_response(){
     $resp = false;
+    // Handle the requested URL, using as many known autoconfiguration urls as possible
     switch (Core::$CurrentPage){
       case "get/test":
         $resp = $this->dummy_response();
@@ -42,6 +44,7 @@ class Responder {
       case "get/all":
         $resp = $this->all_urls();
         break;
+      case "mail/autoconfig.xml":
       case "mail/config-v1.1.xml":
         $resp = $this->moz_auto_config();
         break;
@@ -49,7 +52,7 @@ class Responder {
       case "Autodiscover/Autodiscover.xml":
         $resp = $this->ms_autodiscover();
         break;
-      case "autodiscover/autodiscover.json": //?Email=psw%40wilde.cloud&Protocol=Autodiscoverv1&RedirectCount=1"
+      case "autodiscover/autodiscover.json":
       case "Autodiscover/Autodiscover.json":
         $resp = $this->ms_autodiscover_json();
         break;
@@ -66,7 +69,7 @@ class Responder {
   }
   private function all_urls(){
     $response = new Response();
-
+    // Not really useful, unless some lovely app developers want to parse it for their app :)
     // TODO:: Will work out a better message later
     $response->message = "All URLs Requested";
 
@@ -78,18 +81,21 @@ class Responder {
     return $response;
   }
   private function moz_auto_config(){
+    // The default Thunderbird or Evolution autoconfig.xml file
     $response = new Response();
     $response->content_type = "xml";
     $response->content = "public/autoconfig.php";
     return $response;
   }
   private function ms_autodiscover(){
+    // The default Microsoft Autodiscover.xml file
     $response = new Response();
     $response->content_type = "xml";
     $response->content = "public/autodiscover.php";
     return $response;
   }
   private function ms_autodiscover_json(){
+    // The new Microsoft Autodiscover.json file - undocumented
     $response = new Response();
     $response->content_type = "ms-json";
     $response->content = new MSAutodiscoverJSONResponse();
@@ -120,6 +126,7 @@ class Response {
   public $content = array();
   public function __construct(){
     // add requested page to response. I don't know why, but it could helpful for diagnostics at some point
+    // Does not happen on autoconfig.xml/autodisocver.xml/autodiscover.json files
     $this->url = Core::$CurrentPage;
     if (!Core::$Config["CommitID"]){
       $this->version = Core::VERSION;
@@ -129,7 +136,13 @@ class Response {
 
   }
 }
+class AutoConfig {
+  public prepare_autoconfig_info(){
+    // TODO: Move all the code in autoconfig.php into here
+  }
+}
 class MSAutodiscoverJSONResponse {
+  // More work to do - handling of MS Autodiscover.json requests
   public $Protocol;
   public $Url;
 }
diff --git a/src/public/autoconfig.php b/src/public/autoconfig.php
index 88605d4..0571599 100644
--- a/src/public/autoconfig.php
+++ b/src/public/autoconfig.php
@@ -1,4 +1,13 @@
 <?php
+
+// Errrrrrrrrgh, this is sooooo messy, I'm going to tidy this up
+// It's basically configuring the format of the email address dependent on
+// variables set in the config file.
+// i.e. if the domain isn't required for authentication then it strips the
+// username back to just the pre-@ part. Or, if the username requires a different
+// logon domain, then it replaces the email domain with the localdomain
+//
+// TODO: TIDY THIS UP!!
 $conf = Core::$Config["Services"];
 $data = Core::get_get_data();
 $email_provided = false;
diff --git a/src/public/autodiscover.php b/src/public/autodiscover.php
index c0f7444..6f50fe4 100644
--- a/src/public/autodiscover.php
+++ b/src/public/autodiscover.php
@@ -2,10 +2,7 @@
 $conf = Core::$Config["Services"];
 //get raw POST data so we can extract the email address
 $data = file_get_contents("php://input");
-// file_put_contents(Core::root_dir()."/xmltest", $data);
 preg_match("/\<EMailAddress\>(.*?)\<\/EMailAddress\>/", $data, $matches);
-//print_r($matches);
-
 
 // Example POST Request (sent from client) :
 // <?xml version="1.0" \?\>