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[`Workspace`](Workspace) › [`openPopoutLeaf`](Workspace/openPopoutLeaf)
## Workspace.openPopoutLeaf() method
Open a new popout window with a single new leaf and return that leaf. Only works on the desktop app.
0.15.4
**Signature:**
```typescript
openPopoutLeaf(data?: WorkspaceWindowInitData): WorkspaceLeaf;
```
## Parameters
| Parameter | Type | Description |
| --- | --- | --- |
| <code>data</code> | [`WorkspaceWindowInitData`](WorkspaceWindowInitData) | _(Optional)_ |
**Returns:**
[`WorkspaceLeaf`](WorkspaceLeaf)