diff --git a/Controller/Controller.php b/Controller/Controller.php
old mode 100755
new mode 100644
index 079b706..af167c1
--- a/Controller/Controller.php
+++ b/Controller/Controller.php
@@ -59,7 +59,7 @@ class Controller extends ModuleAbstract
     public const ID = 1001900000;
 
     /**
-     * Providing.
+     * List of modules this module provides for.
      *
      * @var string[]
      * @since 1.0.0
@@ -67,7 +67,7 @@ class Controller extends ModuleAbstract
     protected static array $providing = [];
 
     /**
-     * Dependencies.
+     * List of modules this module depends on.
      *
      * @var string[]
      * @since 1.0.0
diff --git a/Models/AccountRelation.php b/Models/AccountRelation.php
old mode 100755
new mode 100644
index 5492d4b..ae8610e
--- a/Models/AccountRelation.php
+++ b/Models/AccountRelation.php
@@ -18,7 +18,7 @@ use Modules\Admin\Models\Account;
 use Modules\Admin\Models\NullAccount;
 
 /**
- * Promotion class.
+ * AccountRelation class.
  *
  * @package Modules\Marketing\Models
  * @license OMS License 2.0
@@ -35,49 +35,37 @@ class AccountRelation
      */
     public int $id = 0;
 
-    /**
-     * Promotion
-     *
-     * @var int
-     * @since 1.0.0
-     */
-    public int $promotion = 0;
+	/**
+	 * The ID of the promotion associated with this account relation.
+	 *
+	 * @var int
+	 * @since 1.0.0
+	 */
+	public int $promotion = 0;
 
-    /**
-     * Account
-     *
-     * @var Account
-     * @since 1.0.0
-     */
-    public Account $account;
+	/**
+	 * The account associated with this account relation.
+	 *
+	 * @var Account
+	 * @since 1.0.0
+	 */
+	public Account $account;
 
-    /**
-     * Account relation type
-     *
-     * @var int
-     * @since 1.0.0
-     */
-    public int $type = AccountRelationType::CUSTOMER;
+	/**
+	 * The type of this account relation.
+	 *
+	 * @var int
+	 * @since 1.0.0
+	 */
+	public int $type = AccountRelationType::CUSTOMER;
 
-    /**
+	/**
      * Constructor.
      *
      * @since 1.0.0
-     */
-    public function __construct()
-    {
-        $this->account = new NullAccount();
-    }
-
-    /**
-     * Get id.
-     *
-     * @return int Model id
-     *
-     * @since 1.0.0
-     */
-    public function getId() : int
-    {
-        return $this->id;
-    }
+	 */
+	public function __construct()
+	{
+		$this->account = new NullAccount();
+	}
 }
diff --git a/Models/AccountRelationType.php b/Models/AccountRelationType.php
old mode 100755
new mode 100644
diff --git a/Models/AttributeValueType.php b/Models/AttributeValueType.php
old mode 100755
new mode 100644
diff --git a/Models/NullPromotionAttribute.php b/Models/NullPromotionAttribute.php
old mode 100755
new mode 100644