diff --git a/rsconcept/frontend/src/features/help/items/ui/help-formula-tree.tsx b/rsconcept/frontend/src/features/help/items/ui/help-formula-tree.tsx
index 77b89ab3..ae6413bf 100644
--- a/rsconcept/frontend/src/features/help/items/ui/help-formula-tree.tsx
+++ b/rsconcept/frontend/src/features/help/items/ui/help-formula-tree.tsx
@@ -27,6 +27,11 @@ export function HelpFormulaTree() {
       <li>
         <span className='bg-secondary'>составные выражения</span>
       </li>
+
+      <h2>Команды</h2>
+      <li>
+        <kbd>Space</kbd> – перемещение экрана
+      </li>
     </div>
   );
 }
diff --git a/rsconcept/frontend/src/features/help/items/ui/help-rsgraph-term.tsx b/rsconcept/frontend/src/features/help/items/ui/help-rsgraph-term.tsx
index 9e908f2d..04a1bb39 100644
--- a/rsconcept/frontend/src/features/help/items/ui/help-rsgraph-term.tsx
+++ b/rsconcept/frontend/src/features/help/items/ui/help-rsgraph-term.tsx
@@ -69,6 +69,9 @@ export function HelpRSGraphTerm() {
       <div className='flex flex-col-reverse mb-3 sm:flex-row'>
         <div className='sm:w-56'>
           <h1>Общие</h1>
+          <li>
+            <kbd>Space</kbd> – перемещение экрана
+          </li>
           <li>
             <IconOSS className='inline-icon' /> переход к связанной <LinkTopic text='ОСС' topic={HelpTopic.CC_OSS} />
           </li>
diff --git a/rsconcept/frontend/src/features/help/items/ui/help-type-graph.tsx b/rsconcept/frontend/src/features/help/items/ui/help-type-graph.tsx
index 2febed90..8427add8 100644
--- a/rsconcept/frontend/src/features/help/items/ui/help-type-graph.tsx
+++ b/rsconcept/frontend/src/features/help/items/ui/help-type-graph.tsx
@@ -27,6 +27,11 @@ export function HelpTypeGraph() {
       <li>
         <span className='bg-accent-orange'>ступень декартова произведения</span>
       </li>
+
+      <h2>Команды</h2>
+      <li>
+        <kbd>Space</kbd> – перемещение экрана
+      </li>
     </div>
   );
 }
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx
index 27459f41..3f947f47 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-block.tsx
@@ -42,6 +42,9 @@ export function DlgEditBlock() {
   });
 
   function onSubmit(data: IUpdateBlockDTO) {
+    if (data.item_data.parent !== target.parent) {
+      manager.onBlockChangeParent(data.target, data.item_data.parent);
+    }
     return updateBlock({ itemID: manager.oss.id, data });
   }
 
diff --git a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx
index 492ad928..9c8c5383 100644
--- a/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx
+++ b/rsconcept/frontend/src/features/oss/dialogs/dlg-edit-operation/dlg-edit-operation.tsx
@@ -58,9 +58,9 @@ export function DlgEditOperation() {
   const [activeTab, setActiveTab] = useState<TabID>(TabID.CARD);
 
   function onSubmit(data: IUpdateOperationDTO) {
-    // if (data.item_data.parent !== target.parent) {
-    //   data.layout = updateLayoutOnOperationChange(data.target, data.item_data.parent, data.layout);
-    // }
+    if (data.item_data.parent !== target.parent) {
+      manager.onOperationChangeParent(data.target, data.item_data.parent);
+    }
     return updateOperation({ itemID: manager.oss.id, data });
   }
 
diff --git a/rsconcept/frontend/src/features/oss/models/oss-layout-api.ts b/rsconcept/frontend/src/features/oss/models/oss-layout-api.ts
index 45e51d36..cb9a965d 100644
--- a/rsconcept/frontend/src/features/oss/models/oss-layout-api.ts
+++ b/rsconcept/frontend/src/features/oss/models/oss-layout-api.ts
@@ -115,4 +115,14 @@ export class LayoutManager {
       height: bottom && top ? bottom - top : data.height
     };
   }
+
+  /** Update layout when parent changes */
+  onOperationChangeParent(targetID: number, newParent: number | null) {
+    console.error('not implemented', targetID, newParent);
+  }
+
+  /** Update layout when parent changes */
+  onBlockChangeParent(targetID: number, newParent: number | null) {
+    console.error('not implemented', targetID, newParent);
+  }
 }