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# insertChild(_:at:)

Inserts the specified outline object at the specified index.

```
func insertChild(_ child: PDFOutline, at index: Int)
```

## Discussion

To build a PDF outline hierarchy, use this method to add child outline objects. Before you call this method on a `PDFOutline` object that already has a parent, you should retain the object and call [`removeFromParent()`](/documentation/PDFKit/PDFOutline/removeFromParent()) on it first.

## See Also

[`child(at:)`](/documentation/PDFKit/PDFOutline/child(at:))

Returns the child outline object at the specified index.


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