# Undo / redo

Undo and redo is available in the Edit mode of nedyx apps.

For any changes in a page, these options for undo / redo are provided:

* undo: by typing CTRL+z or the undo button in the header bar
* redo: by typing CTRL+y or the redo button in the header bar

#### Remarks

* The undo list is maintained per page. If changes of another page should be reverted, this page must be opened manually.
* Changes of complete pages, like create, duplicate, rename, or delete a page cannot be undone.
* The undo list contains a maximum of 100 entries.
* When a session ends, the undo list is deleted.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.nedyx.com/version-1.66/nedyx/working-with-nedyx/widgets/undo-redo.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.