---
title: boundarySupplementaryItems
framework: uikit
role: symbol
role_heading: Instance Property
path: uikit/uicollectionviewcompositionallayoutconfiguration/boundarysupplementaryitems
---

# boundarySupplementaryItems

An array of the supplementary items that are associated with the boundary edges of the entire layout, such as global headers and footers.

## Declaration

```swift
var boundarySupplementaryItems: [NSCollectionLayoutBoundarySupplementaryItem] { get set }
```