> [!NOTE]
>
> **Caption:**
> - <span style="color: #A52A2A">Unmodifiable variable</span>
> - <span style="color: #B8860B">Default value</span>

Variables:
- :open_file_folder: <span style="color: #A52A2A">a family</span>
  - :notebook: <span style="color: #A52A2A">a variable</span>: <span style="color: #B8860B">null</span>