diff --git a/src/include/abstracts/class-wc-retailcrm-abstract-builder.php b/src/include/abstracts/class-wc-retailcrm-abstract-builder.php
index e7e2165..648f920 100644
--- a/src/include/abstracts/class-wc-retailcrm-abstract-builder.php
+++ b/src/include/abstracts/class-wc-retailcrm-abstract-builder.php
@@ -1,7 +1,14 @@
 <?php
-
 /**
- * Class WC_Retailcrm_Abstract_Builder.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Abstract_Builder - Builds data for CRM.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 abstract class WC_Retailcrm_Abstract_Builder implements WC_Retailcrm_Builder_Interface
 {
diff --git a/src/include/abstracts/class-wc-retailcrm-abstracts-address.php b/src/include/abstracts/class-wc-retailcrm-abstracts-address.php
index e9f3993..9f1c308 100644
--- a/src/include/abstracts/class-wc-retailcrm-abstracts-address.php
+++ b/src/include/abstracts/class-wc-retailcrm-abstracts-address.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Abstracts_Address - Builds data for addresses orders/customers.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 abstract class WC_Retailcrm_Abstracts_Address extends WC_Retailcrm_Abstracts_Data
 {
     /** @var array $data */
diff --git a/src/include/abstracts/class-wc-retailcrm-abstracts-data.php b/src/include/abstracts/class-wc-retailcrm-abstracts-data.php
index 16698bc..5e70612 100644
--- a/src/include/abstracts/class-wc-retailcrm-abstracts-data.php
+++ b/src/include/abstracts/class-wc-retailcrm-abstracts-data.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Abstracts_Data - Class manage different data.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,10 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
-/**
- * Class WC_Retailcrm_Abstracts_Data
- */
 abstract class WC_Retailcrm_Abstracts_Data
 {
     /** @var array */
diff --git a/src/include/abstracts/class-wc-retailcrm-abstracts-settings.php b/src/include/abstracts/class-wc-retailcrm-abstracts-settings.php
index a487577..84449e9 100644
--- a/src/include/abstracts/class-wc-retailcrm-abstracts-settings.php
+++ b/src/include/abstracts/class-wc-retailcrm-abstracts-settings.php
@@ -1,15 +1,15 @@
 <?php
-
 /**
  * PHP version 5.6
  *
+ * Class WC_Retailcrm_Abstracts_Settings - Settings plugin Simla.
+ *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
  * @license  http://retailcrm.ru Proprietary
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 abstract class WC_Retailcrm_Abstracts_Settings extends WC_Integration
 {
     /** @var string */
diff --git a/src/include/api/class-wc-retailcrm-client-v4.php b/src/include/api/class-wc-retailcrm-client-v4.php
index 8004102..1781e9a 100644
--- a/src/include/api/class-wc-retailcrm-client-v4.php
+++ b/src/include/api/class-wc-retailcrm-client-v4.php
@@ -1,9 +1,8 @@
 <?php
-
 /**
- * PHP version 5.3
+ * PHP version 5.6
  *
- * Request class
+ * Class WC_Retailcrm_Client_V4 - Api Client V4 class.
  *
  * @category Integration
  * @package  WC_Retailcrm_Client
@@ -12,11 +11,11 @@
  * @link     http://retailcrm.ru/docs/Developers/ApiVersion4
  */
 
-if ( ! class_exists( 'WC_Retailcrm_Request' ) ) {
+if (!class_exists('WC_Retailcrm_Request')) {
     include_once(WC_Integration_Retailcrm::checkCustomFile('include/api/class-wc-retailcrm-request.php'));
 }
 
-if ( ! class_exists( 'WC_Retailcrm_Response' ) ) {
+if (!class_exists('WC_Retailcrm_Response')) {
     include_once(WC_Integration_Retailcrm::checkCustomFile('include/api/class-wc-retailcrm-response.php'));
 }
 
@@ -52,7 +51,7 @@ class WC_Retailcrm_Client_V4
 
     /**
      * Returns api versions list
-     * 
+     *
      * @return WC_Retailcrm_Response
      */
     public function apiVersions()
diff --git a/src/include/api/class-wc-retailcrm-client-v5.php b/src/include/api/class-wc-retailcrm-client-v5.php
index 3deeba8..273cb36 100644
--- a/src/include/api/class-wc-retailcrm-client-v5.php
+++ b/src/include/api/class-wc-retailcrm-client-v5.php
@@ -1,9 +1,8 @@
 <?php
-
 /**
- * PHP version 5.3
+ * PHP version 5.6
  *
- * Request class
+ * Class WC_Retailcrm_Client_V5 - Api Client V5 class.
  *
  * @category Integration
  * @package  WC_Retailcrm_Client
diff --git a/src/include/api/class-wc-retailcrm-exception-curl.php b/src/include/api/class-wc-retailcrm-exception-curl.php
index 177cd3b..9e53624 100644
--- a/src/include/api/class-wc-retailcrm-exception-curl.php
+++ b/src/include/api/class-wc-retailcrm-exception-curl.php
@@ -1,16 +1,17 @@
 <?php
-
 /**
- * PHP version 5.3
+ * PHP version 5.6
  *
- * WC_Retailcrm_Exception_Curl class
+ * Class WC_Retailcrm_Exception_Curl.
  *
  * @category RetailCRM
  * @package  WC_Retailcrm_Exception_Curl
  * @author   RetailCRM <dev@retailcrm.ru>
  * @license  https://opensource.org/licenses/MIT MIT License
- * @link     http://retailcrm.ru/docs/Developers/ApiVersion4
+ * @link     http://retailcrm.ru/docs/Developers/ApiVersion5
  */
 class WC_Retailcrm_Exception_Curl extends \RuntimeException
 {
+
 }
+
diff --git a/src/include/api/class-wc-retailcrm-exception-json.php b/src/include/api/class-wc-retailcrm-exception-json.php
index 403adf2..e74ae43 100644
--- a/src/include/api/class-wc-retailcrm-exception-json.php
+++ b/src/include/api/class-wc-retailcrm-exception-json.php
@@ -1,16 +1,17 @@
 <?php
-
 /**
- * PHP version 5.3
+ * PHP version 5.6
  *
- * WC_Retailcrm_Exception_Json class
+ * Class WC_Retailcrm_Exception_Json.
  *
  * @category RetailCRM
  * @package  WC_Retailcrm_Exception_Json
  * @author   RetailCRM <dev@retailcrm.ru>
  * @license  https://opensource.org/licenses/MIT MIT License
+ * @link     http://retailcrm.ru/docs/Developers/ApiVersion5
  */
-
 class WC_Retailcrm_Exception_Json extends \DomainException
 {
+
 }
+
diff --git a/src/include/api/class-wc-retailcrm-proxy.php b/src/include/api/class-wc-retailcrm-proxy.php
index 2db32e2..4ac6624 100644
--- a/src/include/api/class-wc-retailcrm-proxy.php
+++ b/src/include/api/class-wc-retailcrm-proxy.php
@@ -1,17 +1,17 @@
 <?php
 /**
- * RetailCRM Integration.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Proxy - RetailCRM Integration.
  *
- * @package  WC_Retailcrm_Proxy
  * @category Integration
- * @author   RetailCRM
+ * @package  WC_Retailcrm_Proxy
+ * @author   RetailCRM <dev@retailcrm.ru>
+ * @license  https://opensource.org/licenses/MIT MIT License
+ * @link     http://retailcrm.ru/docs/Developers/ApiVersion5
  */
 
-if ( ! class_exists( 'WC_Retailcrm_Proxy' ) ) :
-
-    /**
-     * Class WC_Retailcrm_Proxy
-     */
+if (!class_exists('WC_Retailcrm_Proxy')) :
     class WC_Retailcrm_Proxy
     {
         protected $retailcrm;
diff --git a/src/include/api/class-wc-retailcrm-request.php b/src/include/api/class-wc-retailcrm-request.php
index 44290a9..9fdb45b 100644
--- a/src/include/api/class-wc-retailcrm-request.php
+++ b/src/include/api/class-wc-retailcrm-request.php
@@ -1,21 +1,21 @@
 <?php
-
 /**
- * PHP version 5.3
+ * PHP version 5.6
  *
- * Request class
+ * Class WC_Retailcrm_Request - Request class.
  *
  * @category Integration
  * @package  WC_Retailcrm_Request
  * @author   RetailCRM <dev@retailcrm.ru>
  * @license  https://opensource.org/licenses/MIT MIT License
+ * @link     http://retailcrm.ru/docs/Developers/ApiVersion5
  */
 
-if ( ! class_exists( 'WC_Retailcrm_Exception_Curl' ) ) {
+if (!class_exists('WC_Retailcrm_Exception_Curl')) {
     include_once(WC_Integration_Retailcrm::checkCustomFile('include/api/class-wc-retailcrm-exception-curl.php'));
 }
 
-if ( ! class_exists( 'WC_Retailcrm_Response' ) ) {
+if (!class_exists('WC_Retailcrm_Response')) {
     include_once(WC_Integration_Retailcrm::checkCustomFile('include/api/class-wc-retailcrm-response.php'));
 }
 
diff --git a/src/include/api/class-wc-retailcrm-response.php b/src/include/api/class-wc-retailcrm-response.php
index 5073976..6b2576f 100644
--- a/src/include/api/class-wc-retailcrm-response.php
+++ b/src/include/api/class-wc-retailcrm-response.php
@@ -1,21 +1,20 @@
 <?php
-
 /**
- * PHP version 5.3
+ * PHP version 5.6
  *
- * Response class
+ * Class WC_Retailcrm_Response -  Response class.
  *
  * @category Integration
  * @package  WC_Retailcrm_Response
  * @author   RetailCRM <dev@retailcrm.ru>
  * @license  https://opensource.org/licenses/MIT MIT License
+ * @link     http://retailcrm.ru/docs/Developers/ApiVersion5
  */
 
-if ( ! class_exists( 'WC_Retailcrm_Exception_Json' ) ) {
+if (!class_exists('WC_Retailcrm_Exception_Json')) {
     include_once(WC_Integration_Retailcrm::checkCustomFile('include/api/class-wc-retailcrm-exception-json.php'));
 }
 
-
 class WC_Retailcrm_Response implements \ArrayAccess
 {
     // HTTP response status code
diff --git a/src/include/class-wc-retailcrm-base.php b/src/include/class-wc-retailcrm-base.php
index 065299e..260b0e6 100644
--- a/src/include/class-wc-retailcrm-base.php
+++ b/src/include/class-wc-retailcrm-base.php
@@ -1,11 +1,14 @@
 <?php
-
 /**
- * RetailCRM Integration.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Base - Main settings plugin.
  *
- * @package  WC_Retailcrm_Base
  * @category Integration
- * @author   RetailCRM
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 
 if (!class_exists('WC_Retailcrm_Base')) {
@@ -13,9 +16,6 @@ if (!class_exists('WC_Retailcrm_Base')) {
         include_once(WC_Integration_Retailcrm::checkCustomFile('include/abstracts/class-wc-retailcrm-abstracts-settings.php'));
     }
 
-    /**
-     * Class WC_Retailcrm_Base
-     */
     class WC_Retailcrm_Base extends WC_Retailcrm_Abstracts_Settings
     {
         /** @var \WC_Retailcrm_Proxy|WC_Retailcrm_Client_V4|WC_Retailcrm_Client_V5|bool */
diff --git a/src/include/class-wc-retailcrm-customers.php b/src/include/class-wc-retailcrm-customers.php
index b72f526..995191f 100644
--- a/src/include/class-wc-retailcrm-customers.php
+++ b/src/include/class-wc-retailcrm-customers.php
@@ -1,18 +1,17 @@
 <?php
-
 /**
- * RetailCRM Integration.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customers - Allows transfer data customers with CMS.
  *
- * @package  WC_Retailcrm_Customers
  * @category Integration
- * @author   RetailCRM
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 
 if (!class_exists('WC_Retailcrm_Customers')) :
-
-    /**
-     * Class WC_Retailcrm_Customers
-     */
     class WC_Retailcrm_Customers
     {
         /** @var bool | WC_Retailcrm_Proxy | \WC_Retailcrm_Client_V5 */
diff --git a/src/include/class-wc-retailcrm-daemon-collector.php b/src/include/class-wc-retailcrm-daemon-collector.php
index f21db44..cca9b53 100644
--- a/src/include/class-wc-retailcrm-daemon-collector.php
+++ b/src/include/class-wc-retailcrm-daemon-collector.php
@@ -1,7 +1,18 @@
 <?php
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Daemon_Collector - Integration with Daemon Collector.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 
 if (!defined('ABSPATH')) {
-	exit;
+    exit;
 }
 
 class WC_Retailcrm_Daemon_Collector {
diff --git a/src/include/class-wc-retailcrm-ga.php b/src/include/class-wc-retailcrm-ga.php
index d364b65..edb0e47 100644
--- a/src/include/class-wc-retailcrm-ga.php
+++ b/src/include/class-wc-retailcrm-ga.php
@@ -1,7 +1,17 @@
 <?php
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Google_Analytics - Integration with Google Analytics.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 
 if (!class_exists('WC_Retailcrm_Google_Analytics')) {
-
     class WC_Retailcrm_Google_Analytics {
         private static $instance;
         private $options;
diff --git a/src/include/class-wc-retailcrm-history.php b/src/include/class-wc-retailcrm-history.php
index 8cf6b5d..1c2cc62 100644
--- a/src/include/class-wc-retailcrm-history.php
+++ b/src/include/class-wc-retailcrm-history.php
@@ -1,17 +1,17 @@
 <?php
 /**
- * RetailCRM Integration.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_History - Allows transfer data orders/customers with CRM.
  *
- * @package  WC_Retailcrm_History
  * @category Integration
- * @author   RetailCRM
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 
-if ( ! class_exists( 'WC_Retailcrm_History' ) ) :
-
-    /**
-     * Class WC_Retailcrm_History
-     */
+if (!class_exists('WC_Retailcrm_History')) :
     class WC_Retailcrm_History
     {
         /** @var \DateTime */
diff --git a/src/include/class-wc-retailcrm-icml.php b/src/include/class-wc-retailcrm-icml.php
index 18f9d6b..7a942a6 100644
--- a/src/include/class-wc-retailcrm-icml.php
+++ b/src/include/class-wc-retailcrm-icml.php
@@ -1,17 +1,17 @@
 <?php
 /**
- * RetailCRM Integration.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Icml - Generate ICML file (catalog).
  *
- * @package  WC_Retailcrm_Icml
  * @category Integration
- * @author   RetailCRM
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 
-if ( ! class_exists( 'WC_Retailcrm_Icml' ) ) :
-
-    /**
-     * Class WC_Retailcrm_Icml
-     */
+if (!class_exists('WC_Retailcrm_Icml')) :
     class WC_Retailcrm_Icml
     {
         protected $shop;
diff --git a/src/include/class-wc-retailcrm-inventories.php b/src/include/class-wc-retailcrm-inventories.php
index 645e383..ccccc65 100644
--- a/src/include/class-wc-retailcrm-inventories.php
+++ b/src/include/class-wc-retailcrm-inventories.php
@@ -1,17 +1,17 @@
 <?php
 /**
- * RetailCRM Integration.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Inventories - Allows manage stocks.
  *
- * @package  WC_Retailcrm_Inventories
  * @category Integration
- * @author   RetailCRM
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 
 if (!class_exists('WC_Retailcrm_Inventories')) :
-
-    /**
-     * Class WC_Retailcrm_Inventories
-     */
     class WC_Retailcrm_Inventories
     {
         /** @var WC_Retailcrm_Client_V5 */
@@ -40,7 +40,7 @@ if (!class_exists('WC_Retailcrm_Inventories')) :
         }
 
         /**
-         * Load stock from retailCRM
+         * Load stock from RetailCRM
          *
          * @return mixed
          */
diff --git a/src/include/class-wc-retailcrm-orders.php b/src/include/class-wc-retailcrm-orders.php
index 572750a..c8b34b3 100644
--- a/src/include/class-wc-retailcrm-orders.php
+++ b/src/include/class-wc-retailcrm-orders.php
@@ -1,17 +1,17 @@
 <?php
 /**
- * RetailCRM Integration.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Orders - Allows transfer data orders with CMS.
  *
- * @package  WC_Retailcrm_Orders
  * @category Integration
- * @author   RetailCRM
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 
-if ( ! class_exists( 'WC_Retailcrm_Orders' ) ) :
-
-    /**
-     * Class WC_Retailcrm_Orders
-     */
+if (!class_exists('WC_Retailcrm_Orders')) :
     class WC_Retailcrm_Orders
     {
         /** @var bool|WC_Retailcrm_Proxy|\WC_Retailcrm_Client_V5|\WC_Retailcrm_Client_V4 */
diff --git a/src/include/class-wc-retailcrm-plugin.php b/src/include/class-wc-retailcrm-plugin.php
index 6c6268b..9c0ae25 100644
--- a/src/include/class-wc-retailcrm-plugin.php
+++ b/src/include/class-wc-retailcrm-plugin.php
@@ -1,5 +1,15 @@
 <?php
-
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Plugin - Internal plugin settings.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Plugin
 {
 
diff --git a/src/include/class-wc-retailcrm-uploader.php b/src/include/class-wc-retailcrm-uploader.php
index a8611f8..8e97d04 100644
--- a/src/include/class-wc-retailcrm-uploader.php
+++ b/src/include/class-wc-retailcrm-uploader.php
@@ -1,17 +1,17 @@
 <?php
-
 /**
- * RetailCRM Integration.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Uploader - Allows upload archival orders/customers in CRM.
  *
- * @package  WC_Retailcrm_Uploader
  * @category Integration
- * @author   RetailCRM
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 
 if (class_exists('WC_Retailcrm_Uploader') === false) {
-    /**
-     * Class WC_Retailcrm_Uploader
-     */
     class WC_Retailcrm_Uploader
     {
         const RETAILCRM_COUNT_OBJECT_UPLOAD = 50;
diff --git a/src/include/components/class-wc-retailcrm-customer-switcher.php b/src/include/components/class-wc-retailcrm-customer-switcher.php
index e1f39c5..3b4fe77 100644
--- a/src/include/components/class-wc-retailcrm-customer-switcher.php
+++ b/src/include/components/class-wc-retailcrm-customer-switcher.php
@@ -1,9 +1,15 @@
 <?php
-
 /**
- * Class WC_Retailcrm_Customer_Switcher
- * This component provides builder-like interface in order to make it easier to change customer & customer data
- * in the order via retailCRM history.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customer_Switcher - This component provides builder-like interface in order to make it easier to
+ * change customer & customer data in the order via retailCRM history.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 class WC_Retailcrm_Customer_Switcher implements WC_Retailcrm_Builder_Interface
 {
diff --git a/src/include/components/class-wc-retailcrm-history-assembler.php b/src/include/components/class-wc-retailcrm-history-assembler.php
index 9628ca2..b4f336a 100644
--- a/src/include/components/class-wc-retailcrm-history-assembler.php
+++ b/src/include/components/class-wc-retailcrm-history-assembler.php
@@ -1,8 +1,15 @@
 <?php
-
 /**
- * Class WC_Retailcrm_History_Assembler
- * Assembles history records into list which closely resembles orders & customers list output from API.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_History_Assembler - Assembles history records into list which closely resembles
+ * orders & customers list output from API.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 class WC_Retailcrm_History_Assembler
 {
diff --git a/src/include/components/class-wc-retailcrm-logger.php b/src/include/components/class-wc-retailcrm-logger.php
index 4f20630..9ea0fe1 100644
--- a/src/include/components/class-wc-retailcrm-logger.php
+++ b/src/include/components/class-wc-retailcrm-logger.php
@@ -1,16 +1,18 @@
 <?php
 /**
- * RetailCRM Integration.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Logger - Allows display important debug information.
  *
- * @package  WC_Retailcrm_Customers
  * @category Integration
- * @author   RetailCRM
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 
-if (!class_exists('WC_Retailcrm_Logger') && class_exists('WC_Log_Levels')):
+if (!class_exists('WC_Retailcrm_Logger') && class_exists('WC_Log_Levels')) :
     /**
-     * Class WC_Retailcrm_Logger
-     *
      * @codeCoverageIgnore
      */
     class WC_Retailcrm_Logger
diff --git a/src/include/components/class-wc-retailcrm-paginated-request.php b/src/include/components/class-wc-retailcrm-paginated-request.php
index bbbfdb2..eb62ae3 100644
--- a/src/include/components/class-wc-retailcrm-paginated-request.php
+++ b/src/include/components/class-wc-retailcrm-paginated-request.php
@@ -1,9 +1,15 @@
 <?php
-
 /**
- * Class WC_Retailcrm_Paginated_Request
- * It will merge request with pagination data into one big monstrous array.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Paginated_Request - It will merge request with pagination data into one big monstrous array.
  * Use with caution, it can cause problems with very large data sets (due to memory exhaustion, obviously).
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 class WC_Retailcrm_Paginated_Request
 {
diff --git a/src/include/customer/class-wc-retailcrm-customer-address.php b/src/include/customer/class-wc-retailcrm-customer-address.php
index 1a90105..22ad63d 100644
--- a/src/include/customer/class-wc-retailcrm-customer-address.php
+++ b/src/include/customer/class-wc-retailcrm-customer-address.php
@@ -1,7 +1,8 @@
 <?php
-
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customer_Address - Builds a billing address for a customer.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -9,10 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
-/**
- * Class WC_Retailcrm_Customer_Address
- */
 class WC_Retailcrm_Customer_Address extends WC_Retailcrm_Abstracts_Address
 {
     /**
diff --git a/src/include/customer/class-wc-retailcrm-customer-corporate-address.php b/src/include/customer/class-wc-retailcrm-customer-corporate-address.php
index 5482a82..8c4abfe 100644
--- a/src/include/customer/class-wc-retailcrm-customer-corporate-address.php
+++ b/src/include/customer/class-wc-retailcrm-customer-corporate-address.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customer_Corporate_Address - Builds a billing address for a corporate customer.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,10 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
-/**
- * Class WC_Retailcrm_Customer_Address
- */
 class WC_Retailcrm_Customer_Corporate_Address extends WC_Retailcrm_Abstracts_Address
 {
     /** @var bool $isMain */
diff --git a/src/include/customer/woocommerce/class-wc-retailcrm-wc-customer-builder.php b/src/include/customer/woocommerce/class-wc-retailcrm-wc-customer-builder.php
index 6d21071..ffa45ec 100644
--- a/src/include/customer/woocommerce/class-wc-retailcrm-wc-customer-builder.php
+++ b/src/include/customer/woocommerce/class-wc-retailcrm-wc-customer-builder.php
@@ -1,8 +1,14 @@
 <?php
-
 /**
- * Class WC_Retailcrm_WC_Customer_Builder
- * It converts retailCRM customer data (array) into WC_Customer
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_WC_Customer_Builder - It converts retailCRM customer data (array) into WC_Customer.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 class WC_Retailcrm_WC_Customer_Builder extends WC_Retailcrm_Abstract_Builder
 {
diff --git a/src/include/interfaces/class-wc-retailcrm-builder-interface.php b/src/include/interfaces/class-wc-retailcrm-builder-interface.php
index 034b681..d3abfb9 100644
--- a/src/include/interfaces/class-wc-retailcrm-builder-interface.php
+++ b/src/include/interfaces/class-wc-retailcrm-builder-interface.php
@@ -1,8 +1,14 @@
 <?php
-
 /**
- * Interface WC_Retailcrm_Builder_Interface.
- * Main interface for builders. All builders
+ * PHP version 5.6
+ *
+ * Interface WC_Retailcrm_Builder_Interface - Main interface for builders. All builders.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 interface WC_Retailcrm_Builder_Interface {
     /**
diff --git a/src/include/models/class-wc-retailcrm-customer-switcher-result.php b/src/include/models/class-wc-retailcrm-customer-switcher-result.php
index 301e43d..d6a7995 100644
--- a/src/include/models/class-wc-retailcrm-customer-switcher-result.php
+++ b/src/include/models/class-wc-retailcrm-customer-switcher-result.php
@@ -1,10 +1,16 @@
 <?php
-
 /**
- * Class WC_Retailcrm_Customer_Switcher_Result
- * Holds modified order and customer which was set in the order.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customer_Switcher_Result - Holds modified order and customer which was set in the order.
  * If customer is null, then only order props was updated. Previous customer (if it was registered)
  * will be detached from this order.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 class WC_Retailcrm_Customer_Switcher_Result
 {
diff --git a/src/include/models/class-wc-retailcrm-customer-switcher-state.php b/src/include/models/class-wc-retailcrm-customer-switcher-state.php
index 2bb7abb..26a69ce 100644
--- a/src/include/models/class-wc-retailcrm-customer-switcher-state.php
+++ b/src/include/models/class-wc-retailcrm-customer-switcher-state.php
@@ -1,21 +1,28 @@
 <?php
-
 /**
- * Class WC_Retailcrm_Customer_Switcher_State
- * Holds WC_Retailcrm_Customer_Switcher state. It exists only because we need to comply with builder interface.
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customer_Switcher_State - Holds WC_Retailcrm_Customer_Switcher state.
+ * It exists only because we need to comply with builder interface.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 class WC_Retailcrm_Customer_Switcher_State
 {
     /** @var \WC_Order $wcOrder */
    private $wcOrder;
 
-   /** @var array */
+    /** @var array */
    private $newCustomer;
 
-   /** @var array */
+    /** @var array */
    private $newContact;
 
-   /** @var string $newCompanyName */
+    /** @var string $newCompanyName */
     private $newCompanyName;
 
     /** @var array $companyAddress */
diff --git a/src/include/order/class-wc-retailcrm-order-address.php b/src/include/order/class-wc-retailcrm-order-address.php
index 4b65ec8..65d94bc 100644
--- a/src/include/order/class-wc-retailcrm-order-address.php
+++ b/src/include/order/class-wc-retailcrm-order-address.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Order_Address - Build address for CRM order.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_Order_Address extends WC_Retailcrm_Abstracts_Address
 {
     /**
diff --git a/src/include/order/class-wc-retailcrm-order-item.php b/src/include/order/class-wc-retailcrm-order-item.php
index 2cbb170..35e0339 100644
--- a/src/include/order/class-wc-retailcrm-order-item.php
+++ b/src/include/order/class-wc-retailcrm-order-item.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Order_Item - Build items for CRM order.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,14 +10,8 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
-/**
- * Class WC_Retailcrm_Order_Item
- */
 class WC_Retailcrm_Order_Item extends WC_Retailcrm_Abstracts_Data
 {
-    protected $filter_name = 'order_item';
-
     /**
      * @var array order item
      */
diff --git a/src/include/order/class-wc-retailcrm-order-payment.php b/src/include/order/class-wc-retailcrm-order-payment.php
index 24657e3..3e621e0 100644
--- a/src/include/order/class-wc-retailcrm-order-payment.php
+++ b/src/include/order/class-wc-retailcrm-order-payment.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Order_Payment - Build payments for CRM order.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,10 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
-/**
- * Class WC_Retailcrm_Order_Payment
- */
 class WC_Retailcrm_Order_Payment extends WC_Retailcrm_Abstracts_Data
 {
     /** @var string  */
diff --git a/src/include/order/class-wc-retailcrm-order.php b/src/include/order/class-wc-retailcrm-order.php
index 4773aaa..c601fdb 100644
--- a/src/include/order/class-wc-retailcrm-order.php
+++ b/src/include/order/class-wc-retailcrm-order.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Order - Build main data for CRM order.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_Order extends WC_Retailcrm_Abstracts_Data
 {
     /** @var bool */
diff --git a/tests/abstracts/test-wc-retailcrm-abstract-builder.php b/tests/abstracts/test-wc-retailcrm-abstract-builder.php
index 1f31662..5d0a476 100644
--- a/tests/abstracts/test-wc-retailcrm-abstract-builder.php
+++ b/tests/abstracts/test-wc-retailcrm-abstract-builder.php
@@ -1,5 +1,15 @@
 <?php
-
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Abstracts_Settings_Test - Testing WC_Retailcrm_Abstracts_Settings.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Abstracts_Settings_Test extends  WC_Retailcrm_Test_Case_Helper
 {
     /**
diff --git a/tests/customer/test-wc-retailcrm-customer-address.php b/tests/customer/test-wc-retailcrm-customer-address.php
index cd8aa5a..2eed483 100644
--- a/tests/customer/test-wc-retailcrm-customer-address.php
+++ b/tests/customer/test-wc-retailcrm-customer-address.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customer_Address_Test - Testing WC_Retailcrm_Customer_Address.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_Customer_Address_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $customer;
diff --git a/tests/customer/test-wc-retailcrm-customer-corporate-address.php b/tests/customer/test-wc-retailcrm-customer-corporate-address.php
index 6bd475a..b434213 100644
--- a/tests/customer/test-wc-retailcrm-customer-corporate-address.php
+++ b/tests/customer/test-wc-retailcrm-customer-corporate-address.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customer_Corporate_Address_Test - Testing WC_Retailcrm_Customer_Corporate_Address.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_Customer_Corporate_Address_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $customer;
diff --git a/tests/customer/woocommerce/test-wc-retailcrm-wc-customer-builder.php b/tests/customer/woocommerce/test-wc-retailcrm-wc-customer-builder.php
index d27c7a6..7f2b58f 100644
--- a/tests/customer/woocommerce/test-wc-retailcrm-wc-customer-builder.php
+++ b/tests/customer/woocommerce/test-wc-retailcrm-wc-customer-builder.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_WC_Customer_Builder_Test - Testing WC_Retailcrm_WC_Customer_Builder.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_WC_Customer_Builder_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $customer;
diff --git a/tests/datasets/data-base-retailcrm.php b/tests/datasets/data-base-retailcrm.php
index 1f9149a..f790000 100644
--- a/tests/datasets/data-base-retailcrm.php
+++ b/tests/datasets/data-base-retailcrm.php
@@ -2,6 +2,17 @@
 
 namespace datasets;
 
+/**
+ * PHP version 5.6
+ *
+ * Class DataBaseRetailCrm - Data set for WC_Retailcrm_Base.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class DataBaseRetailCrm
 {
     public static function getResponseStatuses()
diff --git a/tests/datasets/data-customers-retailcrm.php b/tests/datasets/data-customers-retailcrm.php
index 7b66170..f4945ca 100644
--- a/tests/datasets/data-customers-retailcrm.php
+++ b/tests/datasets/data-customers-retailcrm.php
@@ -2,6 +2,17 @@
 
 namespace datasets;
 
+/**
+ * PHP version 5.6
+ *
+ * Class DataCustomersRetailCrm - Data set for WC_Retailcrm_Customers.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class DataCustomersRetailCrm
 {
     public static function getCustomerAddress()
diff --git a/tests/datasets/data-history-retailcrm.php b/tests/datasets/data-history-retailcrm.php
index f55644e..6b7c1fd 100644
--- a/tests/datasets/data-history-retailcrm.php
+++ b/tests/datasets/data-history-retailcrm.php
@@ -2,6 +2,17 @@
 
 namespace datasets;
 
+/**
+ * PHP version 5.6
+ *
+ * Class DataHistoryRetailCrm - Data set for WC_Retailcrm_History.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class DataHistoryRetailCrm
 {
     public static function empty_history()
diff --git a/tests/datasets/data-inventories-retailcrm.php b/tests/datasets/data-inventories-retailcrm.php
index 2345ec8..ef18936 100644
--- a/tests/datasets/data-inventories-retailcrm.php
+++ b/tests/datasets/data-inventories-retailcrm.php
@@ -2,6 +2,17 @@
 
 namespace datasets;
 
+/**
+ * PHP version 5.6
+ *
+ * Class DataInventoriesRetailCrm - Data set for WC_Retailcrm_Inventories.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class DataInventoriesRetailCrm {
     public static function getResponseData()
     {
diff --git a/tests/helpers/class-wc-retailcrm-log-handler-stdout.php b/tests/helpers/class-wc-retailcrm-log-handler-stdout.php
index 213d463..44c8528 100644
--- a/tests/helpers/class-wc-retailcrm-log-handler-stdout.php
+++ b/tests/helpers/class-wc-retailcrm-log-handler-stdout.php
@@ -1,14 +1,20 @@
 <?php
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Log_Handler_Stdout - Handles log entries by writing to a stdout.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 
-if (!defined( 'ABSPATH' ) ) {
+if (!defined( 'ABSPATH')) {
     exit;
 }
 
-/**
- * Handles log entries by writing to a stdout
- *
- * @class WC_Retailcrm_Log_Handler_Stdout
- */
 class WC_Retailcrm_Log_Handler_Stdout extends WC_Log_Handler
 {
     /**
diff --git a/tests/helpers/class-wc-retailcrm-response-helper.php b/tests/helpers/class-wc-retailcrm-response-helper.php
index 32bbc7d..1356fd9 100644
--- a/tests/helpers/class-wc-retailcrm-response-helper.php
+++ b/tests/helpers/class-wc-retailcrm-response-helper.php
@@ -1,4 +1,15 @@
 <?php
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Response_Helper - Set response for mock object.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 
 if (!class_exists('WC_Retailcrm_Response')) {
     require_once dirname(__FILE__) . '/../../src/include/api/class-wc-retailcrm-response.php';
diff --git a/tests/helpers/class-wc-retailcrm-test-case-helper.php b/tests/helpers/class-wc-retailcrm-test-case-helper.php
index 0520e11..e8a75c2 100644
--- a/tests/helpers/class-wc-retailcrm-test-case-helper.php
+++ b/tests/helpers/class-wc-retailcrm-test-case-helper.php
@@ -1,7 +1,14 @@
 <?php
-
 /**
- * Class WC_Retailcrm_Test_Case_Helper
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Test_Case_Helper - Helper for testing.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
  */
 class WC_Retailcrm_Test_Case_Helper extends WC_Unit_Test_Case
 {
diff --git a/tests/models/test-wc-retailcrm-customer-switcher-result.php b/tests/models/test-wc-retailcrm-customer-switcher-result.php
index 252fdd8..43f1237 100644
--- a/tests/models/test-wc-retailcrm-customer-switcher-result.php
+++ b/tests/models/test-wc-retailcrm-customer-switcher-result.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customer_Switcher_Result_Test - Testing WC_Retailcrm_Customer_Switcher_Result.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_Customer_Switcher_Result_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $customer;
diff --git a/tests/models/test-wc-retailcrm-customer-switcher-state.php b/tests/models/test-wc-retailcrm-customer-switcher-state.php
index b1808c3..8cff38c 100644
--- a/tests/models/test-wc-retailcrm-customer-switcher-state.php
+++ b/tests/models/test-wc-retailcrm-customer-switcher-state.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customer_Switcher_State_Test - Testing WC_Retailcrm_Customer_Switcher_State.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_Customer_Switcher_State_Test extends WC_Retailcrm_Test_Case_Helper
 {
     public function test_feasible()
diff --git a/tests/order/test-wc-retailcrm-order-address.php b/tests/order/test-wc-retailcrm-order-address.php
index 64c1017..33dbf6c 100644
--- a/tests/order/test-wc-retailcrm-order-address.php
+++ b/tests/order/test-wc-retailcrm-order-address.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Order_Address_Test - Testing WC_Retailcrm_Order_Address.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,10 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
-/**
- * Class WC_Retailcrm_Order_Address_Test
- */
 class WC_Retailcrm_Order_Address_Test extends WC_Retailcrm_Test_Case_Helper
 {
     /** @var WC_Order */
diff --git a/tests/order/test-wc-retailcrm-order-item.php b/tests/order/test-wc-retailcrm-order-item.php
index b9406bb..b02a991 100644
--- a/tests/order/test-wc-retailcrm-order-item.php
+++ b/tests/order/test-wc-retailcrm-order-item.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Order_Item_Test - Testing WC_Retailcrm_Order_Item.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_Order_Item_Test extends WC_Retailcrm_Test_Case_Helper
 {
     /** @var WC_Order */
diff --git a/tests/order/test-wc-retailcrm-order-payment.php b/tests/order/test-wc-retailcrm-order-payment.php
index a0b0a74..5184f5f 100644
--- a/tests/order/test-wc-retailcrm-order-payment.php
+++ b/tests/order/test-wc-retailcrm-order-payment.php
@@ -1,6 +1,8 @@
 <?php
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Order_Payment_Test - Testing WC_Retailcrm_Order_Payment.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -8,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_Order_Payment_Test extends WC_Retailcrm_Test_Case_Helper
 {
     /** @var WC_Order */
diff --git a/tests/order/test-wc-retailcrm-order.php b/tests/order/test-wc-retailcrm-order.php
index a38ca72..f268e08 100644
--- a/tests/order/test-wc-retailcrm-order.php
+++ b/tests/order/test-wc-retailcrm-order.php
@@ -1,7 +1,8 @@
 <?php
-
 /**
- * PHP version 5.3
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Order_Test - Testing WC_Retailcrm_Order.
  *
  * @category Integration
  * @author   RetailCRM <integration@retailcrm.ru>
@@ -9,7 +10,6 @@
  * @link     http://retailcrm.ru
  * @see      http://help.retailcrm.ru
  */
-
 class WC_Retailcrm_Order_Test extends WC_Retailcrm_Test_Case_Helper {
     /** @var WC_Order */
     protected $order;
diff --git a/tests/test-wc-retailcrm-base.php b/tests/test-wc-retailcrm-base.php
index e23dcad..c514192 100644
--- a/tests/test-wc-retailcrm-base.php
+++ b/tests/test-wc-retailcrm-base.php
@@ -2,6 +2,17 @@
 
 use datasets\DataBaseRetailCrm;
 
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Base_Test - Testing WC_Retailcrm_Base.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Base_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $apiMock;
diff --git a/tests/test-wc-retailcrm-customers.php b/tests/test-wc-retailcrm-customers.php
index 2b3d7b9..4f71b07 100644
--- a/tests/test-wc-retailcrm-customers.php
+++ b/tests/test-wc-retailcrm-customers.php
@@ -2,6 +2,17 @@
 
 use datasets\DataCustomersRetailCrm;
 
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Customers_Test - Testing WC_Retailcrm_Customers.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Customers_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $apiMock;
diff --git a/tests/test-wc-retailcrm-daemon-collector.php b/tests/test-wc-retailcrm-daemon-collector.php
index ce33567..9e93791 100644
--- a/tests/test-wc-retailcrm-daemon-collector.php
+++ b/tests/test-wc-retailcrm-daemon-collector.php
@@ -1,5 +1,15 @@
 <?php
-
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Daemon_Collector_Test - Testing WC_Retailcrm_Daemon_Collector.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Daemon_Collector_Test extends WC_Retailcrm_Test_Case_Helper
 {
     private $daemonCollector;
diff --git a/tests/test-wc-retailcrm-ga.php b/tests/test-wc-retailcrm-ga.php
index c37a8f7..bd4264f 100644
--- a/tests/test-wc-retailcrm-ga.php
+++ b/tests/test-wc-retailcrm-ga.php
@@ -1,5 +1,15 @@
 <?php
-
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Google_Analytics_Test - Testing WC_Retailcrm_Google_Analytics.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Google_Analytics_Test extends WC_Retailcrm_Test_Case_Helper
 {
     private $ga;
diff --git a/tests/test-wc-retailcrm-history.php b/tests/test-wc-retailcrm-history.php
index 68d4847..83dbf73 100644
--- a/tests/test-wc-retailcrm-history.php
+++ b/tests/test-wc-retailcrm-history.php
@@ -2,6 +2,17 @@
 
 use datasets\DataHistoryRetailCrm;
 
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_History_Test - Testing WC_Retailcrm_History.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_History_Test extends WC_Retailcrm_Test_Case_Helper
 {
     /** @var WC_Retailcrm_Proxy */
diff --git a/tests/test-wc-retailcrm-icml.php b/tests/test-wc-retailcrm-icml.php
index 976f06e..a33d1d4 100644
--- a/tests/test-wc-retailcrm-icml.php
+++ b/tests/test-wc-retailcrm-icml.php
@@ -1,5 +1,15 @@
 <?php
-
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Icml_Test - Testing WC_Retailcrm_Icml.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Icml_Test extends WC_Retailcrm_Test_Case_Helper
 {
     public function setUp()
diff --git a/tests/test-wc-retailcrm-inventories.php b/tests/test-wc-retailcrm-inventories.php
index 9f491e3..00fefcc 100644
--- a/tests/test-wc-retailcrm-inventories.php
+++ b/tests/test-wc-retailcrm-inventories.php
@@ -2,6 +2,17 @@
 
 use datasets\DataInventoriesRetailCrm;
 
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Inventories_Test - Testing WC_Retailcrm_Inventories.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Inventories_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $apiMock;
diff --git a/tests/test-wc-retailcrm-orders.php b/tests/test-wc-retailcrm-orders.php
index e6fc37c..a30bd1c 100644
--- a/tests/test-wc-retailcrm-orders.php
+++ b/tests/test-wc-retailcrm-orders.php
@@ -1,5 +1,15 @@
 <?php
-
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Orders_Test - Testing WC_Retailcrm_Orders.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Orders_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $apiMock;
diff --git a/tests/test-wc-retailcrm-plugin.php b/tests/test-wc-retailcrm-plugin.php
index 8bced9e..977fb1e 100644
--- a/tests/test-wc-retailcrm-plugin.php
+++ b/tests/test-wc-retailcrm-plugin.php
@@ -1,5 +1,15 @@
 <?php
-
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Plugin_Test - Testing WC_Retailcrm_Plugin.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Plugin_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $apiMock;
diff --git a/tests/test-wc-retailcrm-uploader.php b/tests/test-wc-retailcrm-uploader.php
index 0b14a44..ce88770 100644
--- a/tests/test-wc-retailcrm-uploader.php
+++ b/tests/test-wc-retailcrm-uploader.php
@@ -1,5 +1,15 @@
 <?php
-
+/**
+ * PHP version 5.6
+ *
+ * Class WC_Retailcrm_Uploader_Test - Testing WC_Retailcrm_Uploader.
+ *
+ * @category Integration
+ * @author   RetailCRM <integration@retailcrm.ru>
+ * @license  http://retailcrm.ru Proprietary
+ * @link     http://retailcrm.ru
+ * @see      http://help.retailcrm.ru
+ */
 class WC_Retailcrm_Uploader_Test extends WC_Retailcrm_Test_Case_Helper
 {
     protected $apiMock;