diff --git a/6. Developing with Adminhtml/1. Describe common structure architecture.md b/6. Developing with Adminhtml/1. Describe common structure architecture.md
index a914d26..c218dd4 100644
--- a/6. Developing with Adminhtml/1. Describe common structure architecture.md	
+++ b/6. Developing with Adminhtml/1. Describe common structure architecture.md	
@@ -133,14 +133,4 @@ In *backend* use customized version `\Magento\Backend\Model\Url`:
 - can disable secret key generation with turnOffSecretKey() and revert with turnOnSecretKey().
   Global admin config `admin/security/use_form_key`.
 
-*Secret key* = `hash($routeName . $controllerName . $actionName . $sessionFormKey)`
-
-
-
-
-## Describe the difference between Adminhtml and frontend. What additional tools and requirements exist in the admin?
-- ACL permissions - `_isAllowed`, change static const `ADMIN_RESOURCE`
-- base controller Magento\Backend\App\Action = Magento\Backend\App\AbstractAction
-- custom *URL model* - secret key `key`
-- layout `acl` block attribute
-- ...
+*Secret key* = `hash($routeName . $controllerName . $actionName . $sessionFormKey)`
\ No newline at end of file