diff --git a/public_html/index.php b/public_html/index.php
index 651cb25..342c6e9 100644
--- a/public_html/index.php
+++ b/public_html/index.php
@@ -1,7 +1,7 @@
 <?php
 
 /**
- * Copyright (c) 2019. ExacTI Technology Solutions
+ * Copyright (c) 2021. ExacTI Technology Solutions
  * GPLv3 General License.
  * https://exacti.com.br
  * Phacil PHP Framework - https://github.com/exacti/phacil-framework
@@ -23,6 +23,7 @@ switch($tipe) {
 		require_once(DIR_SYSTEM.'ecompress/css_and_javascript_optimized.php');
 		break;
 	default:
+		/** @return \Phacil\Framework\startEngineExacTI */
 		require_once(DIR_SYSTEM.'system.php');
 		break;
 }
diff --git a/system/caches/caches.php b/system/caches/caches.php
index e833deb..1d2a24a 100644
--- a/system/caches/caches.php
+++ b/system/caches/caches.php
@@ -122,6 +122,10 @@ final class Caches {
 
     }
 
+    /**
+     * @param string $value 
+     * @return string 
+     */
     private function decode($value){
 
         if(function_exists('igbinary_serialize')){
@@ -131,6 +135,10 @@ final class Caches {
         }
     }
 
+    /**
+     * @param string $key 
+     * @return false|string 
+     */
     private function valid($key) {
         $file = ($this->dirCache . preg_replace('/[^A-Z0-9\._-]/i', '', $key) . '.cache');
 
@@ -155,6 +163,7 @@ final class Caches {
         }
     }
 
+    /** @return true  */
     public function deleteAll() {
         $files = glob($this->dirCache . '*.cache');
 
@@ -165,13 +174,15 @@ final class Caches {
         return true;
     }
 
+    /** @return bool  */
     public function clear() {
         return $this->deleteAll();
     }
 
+    /** @return Phacil\Framework\stdClass  */
     public function stats() {
 
-        $obj = new stdClass();
+        $obj = new \stdClass();
 
         $obj->size = $this->GetDirectorySize($this->dirCache);
         $obj->info = NULL;
@@ -181,6 +192,10 @@ final class Caches {
         return $obj;
     }
 
+    /**
+     * @param string $path 
+     * @return float|int 
+     */
     private function GetDirectorySize($path){
         $bytestotal = 0;
         $path = realpath($path);
diff --git a/system/system.php b/system/system.php
index 3808756..c88c71d 100644
--- a/system/system.php
+++ b/system/system.php
@@ -11,9 +11,11 @@ namespace Phacil\Framework;
 use Exception;
 use TypeError;
 
+/**
+ * 
+ * @package Phacil\Framework
+ */
 class startEngineExacTI {
-    /*public $constants;
-    public $userConstants;*/
 
     /**
      * 
@@ -240,6 +242,7 @@ $loader = new Loader($engine->registry);
 $engine->registry->set('load', $loader);
 
 // Config
+/** @var Config */
 $config = new Config();
 $engine->registry->set('config', $config);