---
title: NSSplitViewItem.CollapseBehavior.default
framework: appkit
role: symbol
role_heading: Case
path: appkit/nssplitviewitem/collapsebehavior-swift.enum/default
---

# NSSplitViewItem.CollapseBehavior.default

The item uses the default collapsing behavior.

## Declaration

```swift
case `default`
```

## See Also

### Constants

- [NSSplitViewItem.CollapseBehavior.preferResizingSplitViewWithFixedSiblings](appkit/nssplitviewitem/collapsebehavior-swift.enum/preferresizingsplitviewwithfixedsiblings.md)
- [NSSplitViewItem.CollapseBehavior.preferResizingSiblingsWithFixedSplitView](appkit/nssplitviewitem/collapsebehavior-swift.enum/preferresizingsiblingswithfixedsplitview.md)
- [NSSplitViewItem.CollapseBehavior.useConstraints](appkit/nssplitviewitem/collapsebehavior-swift.enum/useconstraints.md)