# Sandbox.Helpers.UndoSystem.Insert

```csharp
Entry Insert(string title, System.Action undo, System.Action redo = null)
```

Insert a new undo entry

### Parameters

- `title` (`string`)
- `undo` (`System.Action`)
- `redo` (`System.Action`), default `null`

### Returns

`Entry`

Declared in [Sandbox.Helpers.UndoSystem](/api/Sandbox.Helpers.UndoSystem).
Assembly: `Sandbox.Tools`.