Android
```kotlin
@ExperimentalMaterial3AdaptiveApi
object SupportingPaneScaffoldRole
```
The set of the available pane roles of [SupportingPaneScaffold](/jetpack-compose/androidx.compose.material3/material3-adaptive/components/SupportingPaneScaffold). Basically those values are
aliases of [ThreePaneScaffoldRole](/jetpack-compose/androidx.compose.material3/material3-adaptive/classes/ThreePaneScaffoldRole). We suggest you to use the values defined here instead of
the raw [ThreePaneScaffoldRole](/jetpack-compose/androidx.compose.material3/material3-adaptive/classes/ThreePaneScaffoldRole) under the context of [SupportingPaneScaffold](/jetpack-compose/androidx.compose.material3/material3-adaptive/components/SupportingPaneScaffold) for better
code clarity.
## Properties
Android
```kotlin
val Main = ThreePaneScaffoldRole.Primary
```
The main pane of [SupportingPaneScaffold](/jetpack-compose/androidx.compose.material3/material3-adaptive/components/SupportingPaneScaffold). It is an alias of
[ThreePaneScaffoldRole.Primary](/jetpack-compose/androidx.compose.material3/material3-adaptive/classes/ThreePaneScaffoldRole.Primary).
Android
```kotlin
val Supporting = ThreePaneScaffoldRole.Secondary
```
The supporting pane of [SupportingPaneScaffold](/jetpack-compose/androidx.compose.material3/material3-adaptive/components/SupportingPaneScaffold). It is an alias of
[ThreePaneScaffoldRole.Secondary](/jetpack-compose/androidx.compose.material3/material3-adaptive/classes/ThreePaneScaffoldRole.Secondary).
Android
```kotlin
val Extra = ThreePaneScaffoldRole.Tertiary
```
The extra pane of [SupportingPaneScaffold](/jetpack-compose/androidx.compose.material3/material3-adaptive/components/SupportingPaneScaffold). It is an alias of
[ThreePaneScaffoldRole.Tertiary](/jetpack-compose/androidx.compose.material3/material3-adaptive/classes/ThreePaneScaffoldRole.Tertiary).