Submenu – core/navigation-submenu
Add a submenu to your navigation.
Use the Submenu block within a Navigation block to create a submenu.
Screenshot

Example
This Submenu block should contain two items:
- menu – block keyword: link to items tagged menu in the Block keyword taxonomy
- design – block category: link to items tagged design in the Block category taxonomy.
Notes
- The Submenu block is normally used within a Navigation – core/navigation block.
- It can be programmatically inserted anywhere.