Common
```kotlin
sealed class PaneExpansionAnchor
```
The implementations of this interface represent different types of anchors of pane expansion
dragging. Setting up anchors when create [PaneExpansionState](/jetpack-compose/androidx.compose.material3.adaptive/adaptive-layout/classes/PaneExpansionState) will force user dragging to snap to
the set anchors after user releases the drag.
## Properties
Common
```kotlin
@get:Composable abstract val description: String
```
The description of the anchor that will be used in
[androidx.compose.ui.semantics.SemanticsProperties](/jetpack-compose/androidx.compose.remote/remote-creation-compose/objects/SemanticsProperties) like accessibility services.
## Companion Object