# LayoutChangedArea

Canonical page: https://www.adaptabletools.com/docs/reference/layoutchangedarea

Facets of a Layout that can change while that Layout remains selected.

Used by  so listeners can react to specific
grid/layout edits (e.g. sorting or column filters) without deep-diffing Layout State
or enumerating every filter `actionName`.

```ts title="TypeScript"
export type LayoutChangedArea = 'Columns' | 'ColumnPinning' | 'ColumnHeaders' | 'ColumnSorting' | 'RowGrouping' | 'Aggregations' | 'RowSummaries' | 'RowSelection' | 'ColumnFilter' | 'GridFilter' | 'Pivoting';
```