# AllowUndo Property

> Turns the undo buffer of TXTextControl on or off to save time and memory when generating reports; active by default, but off when running on a server.

- **Product:** TX Text Control ActiveX
- **Section:** Documentation
- **Kind:** Property
- **Path:** TX Text Control ActiveX > API Reference > TXTextControl > AllowUndo Property
- **138 words**
- **Web URL:** https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/allowundo-property/
- **LLMs URL:** https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/allowundo-property/llms.txt
- **LLMs-Full URL:** https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/allowundo-property/llms-full.txt

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Determines whether the undo buffer is active or not. If a Text Control is used for tasks like generating reports, it can be useful to deactivate the undo buffer to save time and memory. By default the undo buffer is active. When running on a server the undo buffer is deactivated by default.

Introduced: 11.0.

### Syntax

```vbscript
TXTextControl.AllowUndo
```

### Data Types

Boolean.

### See Also

- [Undo Method](https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/undo-method/llms-full.txt)
- [Redo Method](https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/redo-method/llms-full.txt)
- [Programming Category: Undo](https://docs.textcontrol.com/tx-text-control-activex/reference/categories/undo/llms-full.txt)

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## Nearby

- **Previous:** [AllowDrop Property](https://docs.textcontrol.com/tx-text-control-activex/reference/txtextcontrol/allowdrop-property/llms-full.txt)
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