diff --git a/www/api/httpauth.inc.php b/www/api/httpauth.inc.php
index 0e3a66d..ee5c7f2 100644
--- a/www/api/httpauth.inc.php
+++ b/www/api/httpauth.inc.php
@@ -1,10 +1,29 @@
 <?php
+/**
+ * Checks if the user is logged on and sends a HTTP basic auth
+ * request to the browser if not. In that case the script ends.
+ * If username and password are available, the user service's
+ * login method is used to log the user in.
+ *
+ * SemanticScuttle - your social bookmark manager.
+ *
+ * PHP version 5.
+ *
+ * @category Bookmarking
+ * @package  SemanticScuttle
+ * @author   Benjamin Huynh-Kim-Bang <mensonge@users.sourceforge.net>
+ * @author   Christian Weiske <cweiske@cweiske.de>
+ * @author   Eric Dane <ericdane@users.sourceforge.net>
+ * @license  GPL http://www.gnu.org/licenses/gpl.html
+ * @link     http://sourceforge.net/projects/semanticscuttle
+ */
 require_once '../www-header.php';
 
-// Provides HTTP Basic authentication of a user
-// and logs the user in if necessary
-
-function authenticate() {
+/**
+ * Sends HTTP auth headers to the browser
+ */
+function authenticate()
+{
 	header('WWW-Authenticate: Basic realm="SemanticScuttle API"');
 	header('HTTP/1.0 401 Unauthorized');
 
@@ -26,7 +45,9 @@ if (!$userservice->isLoggedOn()) {
     if (!isset($_SERVER['PHP_AUTH_USER'])) {
         authenticate();
     } else {
-        $login = $userservice->login($_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']);
+        $login = $userservice->login(
+            $_SERVER['PHP_AUTH_USER'], $_SERVER['PHP_AUTH_PW']
+        );
         if ($login) {
             $currentUser = $userservice->getCurrentObjectUser();
         } else {