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index 80c92b017..0017d1195 100644
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index ea1625aa5..5f1412b47 100644
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                 "phpunit/php-file-iterator": "^6.0.0",
                 "phpunit/php-invoker": "^6.0.0",
                 "phpunit/php-text-template": "^5.0.0",
@@ -7679,7 +7671,7 @@
             "type": "library",
             "extra": {
                 "branch-alias": {
-                    "dev-main": "12.4-dev"
+                    "dev-main": "12.5-dev"
                 }
             },
             "autoload": {
@@ -7711,7 +7703,7 @@
             "support": {
                 "issues": "https://github.com/sebastianbergmann/phpunit/issues",
                 "security": "https://github.com/sebastianbergmann/phpunit/security/policy",
-                "source": "https://github.com/sebastianbergmann/phpunit/tree/12.4.4"
+                "source": "https://github.com/sebastianbergmann/phpunit/tree/12.5.1"
             },
             "funding": [
                 {
@@ -7735,7 +7727,7 @@
                     "type": "tidelift"
                 }
             ],
-            "time": "2025-11-21T07:39:11+00:00"
+            "time": "2025-12-06T12:19:17+00:00"
         },
         {
             "name": "rector/jack",
@@ -8958,5 +8950,5 @@
         "php": "^8.4"
     },
     "platform-dev": {},
-    "plugin-api-version": "2.9.0"
+    "plugin-api-version": "2.6.0"
 }
diff --git a/resources/docs/creating-a-node-visitor.md b/resources/docs/creating-a-node-visitor.md
index 5465af60d..c012a32bf 100644
--- a/resources/docs/creating-a-node-visitor.md
+++ b/resources/docs/creating-a-node-visitor.md
@@ -1,17 +1,10 @@
-You can add new NodeVisitors to process nodes in the `rector.php` config, make sure you tag it correctly so dependency injection knows where to look:
+You can add new NodeVisitors to decorate nodes with attributes before being used by one or more rules. This is useful if you need to add metadata to nodes, that are known only in higher nodes. E.g. if `Expr` is part of assign:
 
 ```php
-<?php
-
-use Rector\Config\RectorConfig;
-use My\Rector\Visitor\HelloVisitor;
-use Rector\NodeTypeResolver\PHPStan\Scope\Contract\NodeVisitor\ScopeResolverNodeVisitorInterface;
-
-return RectorConfig::configure()
-    ->registerService(HelloVisitor::class, null, ScopeResolverNodeVisitorInterface::class);
+$value = 100;
 ```
 
-## A simple node visitor
+First we create a node visitor, that implements `Rector\Contract\PhpParser\DecoratingNodeVisitorInterface`:
 
 ```php
 <?php
@@ -22,21 +15,75 @@ namespace My\Rector\Visitor;
 
 use PhpParser\Node;
 use PhpParser\Node\Stmt;
+use PhpParser\Node\Expr\Assign;
 use PhpParser\NodeVisitorAbstract;
-use Rector\NodeTypeResolver\PHPStan\Scope\Contract\NodeVisitor\ScopeResolverNodeVisitorInterface;
+use Rector\Contract\PhpParser\DecoratingNodeVisitorInterface;
 
-class HelloVisitor extends NodeVisitorAbstract implements ScopeResolverNodeVisitorInterface
+final class AssignAwareNodeVisitor extends NodeVisitorAbstract implements DecoratingNodeVisitorInterface
 {
-    public const HELLO_ATTRIBUTE = 'rector_comment';
+    public const IS_PART_OF_ASSIGN = 'is_part_of_assign';
 
     public function enterNode(Node $node)
     {
-        if (! $node instanceof Stmt) {
+        if (! $node instanceof Assign) {
             return null;
         }
 
-        $node->setAttribute(self::HELLO_ATTRIBUTE, 'i was here');
-        return $node;
+        $node->var->setAttribute(self::IS_PART_OF_ASSIGN, true);
+        $node->expr->setAttribute(self::IS_PART_OF_ASSIGN, true);
+
+        return null;
+    }
+}
+```
+
+Never modify any nodes in the visitor as it might break node tree traversal. Only add attributes to nodes.
+
+<br>
+
+### Register in Rector
+
+Then, register in the `rector.php` config:
+
+```php
+<?php
+
+use Rector\Config\RectorConfig;
+use My\Rector\Visitor\HelloVisitor;
+
+return RectorConfig::configure()
+    ->registerDecoratingNodeVisitor(ScopeResolverNodeVisitorInterface::class);
+```
+
+<br>
+
+If you're adding similar node visitor to Rector codebase, add class to  `Rector\DependencyInjection\LazyContainerFactory::DECORATING_NODE_VISITOR_CLASSES` to register it.
+
+<br>
+
+Then, you can check the attribute in any Rector rule:
+
+```php
+fianl class SomeRector extends AbstractRector
+{
+    public function refactor(Node $node): ?Node
+    {
+        if ($node->getAttribute(AssignAwareNodeVisitor::IS_PART_OF_ASSIGN)) {
+            // we know node is part of assign
+        }
+
+        // ...
+
+        return null;
     }
 }
 ```
+
+<br>
+
+### Use Existing Attribute Keys
+
+Rector provides couple such node visitors out of the box. You can use these attributes already.
+
+To find out list of attributes you can use, see `IS_*` constants in
+[`AttributeKey` class](https://github.com/rectorphp/rector-src/blob/main/src/NodeTypeResolver/Node/AttributeKey.php).
diff --git a/src/Documentation/DocumentationMenuFactory.php b/src/Documentation/DocumentationMenuFactory.php
index d83b822c3..34031c33c 100644
--- a/src/Documentation/DocumentationMenuFactory.php
+++ b/src/Documentation/DocumentationMenuFactory.php
@@ -72,7 +72,11 @@ public function create(): array
                     'writing-tests-for-custom-rule',
                     'Writing Tests For Custom Rule'
                 ),
-                $this->documentationMenuItemFactory->createSection('creating-a-node-visitor', 'Creating Node Visitor'),
+                $this->documentationMenuItemFactory->createSection(
+                    'creating-a-node-visitor',
+                    'Creating Node Visitor',
+                    true
+                ),
                 $this->documentationMenuItemFactory->createSection('how-to-run-on-php-53', 'Run on PHP 5.3'),
                 $this->documentationMenuItemFactory->createSection(
                     'https://leanpub.com/rector-the-power-of-automated-refactoring',