---
title: TabSectionExpansion
framework: swiftui
role: symbol
role_heading: Structure
path: swiftui/tabsectionexpansion
---

# TabSectionExpansion

The default expansion state for a tab section in the sidebar.

## Declaration

```swift
struct TabSectionExpansion
```

## Overview

Overview Use this type in conjunction with the defaultSectionExpansion(_:) modifier.

## Topics

### Tab section expansion options

- [automatic](swiftui/tabsectionexpansion/automatic.md)
- [collapsed](swiftui/tabsectionexpansion/collapsed.md)
- [expanded](swiftui/tabsectionexpansion/expanded.md)

## Relationships

### Conforms To

- [Equatable](swift/equatable.md)
- [Hashable](swift/hashable.md)
- [Sendable](swift/sendable.md)
- [SendableMetatype](swift/sendablemetatype.md)

## See Also

### Configuring tab content

- [badge(_:)](swiftui/tabcontent/badge(_:).md)
- [contextMenu(menuItems:)](swiftui/tabcontent/contextmenu(menuitems:).md)
- [customizationBehavior(_:for:)](swiftui/tabcontent/customizationbehavior(_:for:).md)
- [customizationID(_:)](swiftui/tabcontent/customizationid(_:).md)
- [defaultSectionExpansion(_:)](swiftui/tabcontent/defaultsectionexpansion(_:).md)
- [defaultVisibility(_:for:)](swiftui/tabcontent/defaultvisibility(_:for:).md)
- [disabled(_:)](swiftui/tabcontent/disabled(_:).md)
- [draggable(_:)](swiftui/tabcontent/draggable(_:).md)
- [dropDestination(for:action:)](swiftui/tabcontent/dropdestination(for:action:).md)
- [help(_:)](swiftui/tabcontent/help(_:).md)
- [hidden(_:)](swiftui/tabcontent/hidden(_:).md)
- [popover(isPresented:attachmentAnchor:arrowEdge:content:)](swiftui/tabcontent/popover(ispresented:attachmentanchor:arrowedge:content:).md)
- [popover(item:attachmentAnchor:arrowEdge:content:)](swiftui/tabcontent/popover(item:attachmentanchor:arrowedge:content:).md)
- [sectionActions(content:)](swiftui/tabcontent/sectionactions(content:).md)
- [springLoadingBehavior(_:)](swiftui/tabcontent/springloadingbehavior(_:).md)