# TreeGrid.RootOptions

Inputs accepted by TreeGrid.Root in addition to the shared DOM host options.

## Signatures

```ts
export interface RootOptions extends Dom.HostOptions<HTMLDivElement> {
    readonly state: RefSubject.HydratedRefSubject<State, Schema.SchemaError>;
    readonly collection?: RefSubject.RefSubject<Collection.State<CellPosition>>;
    readonly label: Renderable.Any<string | null | undefined>;
    readonly content: Renderable.Any;
}
```

## Property: collection

Item registry used for collection-driven keyboard behavior and mounted ordering.

## Property: content

Renderable child content for the component host.

## Property: label

Accessible label rendered through aria-label.

## Property: state

Renderer-independent RefSubject state consumed by this component or operation.