# Basic Usage

A minimal `XWUISuper<Domain>` subclass - `XWUISuperDemo` - with one Demo group of two leaves (Dashboard, Reports), each backed by a stand-in `XWUICard` so the example stays import-light. It mounts on `activeKey: "demo-dashboard"` (also the `meta.default` leaf) and swaps the main slot between the two cards as the sidebar leaves are clicked.