Document delete confirmation and wrap with sections

editor/navigation.mdx

@@ -17,9 +17,17 @@
 
 To add a navigation element nested inside another element, click the <Icon icon="plus" /> plus button next to the name of the top-level element.
 
+When adding elements at the root level with existing content, the dropdown shows two sections:
+- **Add**: Creates new pages or groups alongside existing content
+- **Wrap with**: Wraps all existing content under a new division (Tab, Dropdown, Anchor, etc.)
+
 After you create an element, drag-and-drop it to reorder or nest it within other elements. Hover over an element then click the gear icon to configure its properties, or right-click an element to access additional options like duplicate, convert to another element, or delete.
 
+<Note>
+  When deleting a division (tab, dropdown, anchor, etc.) or group that contains children, a confirmation dialog appears to prevent accidental deletion.
+</Note>
+
 To ungroup pages within a group or other navigation element, right-click then click **Ungroup**. All pages within the ungrouped element move to the root level of your navigation.
 
 <Note>
   Some elements cannot nest inside other elements. For example, tabs cannot nest inside groups. The web editor prevents you from nesting invalid elements.
@@ -114,7 +122,7 @@
 1. Hover over a navigation item.
 1. Click the gear icon.
 1. Click the tag field.
 1. Enter a tag like "NEW" or "BETA" that highlights important items.
 
 **Control visibility:**