> For the complete documentation index, see [llms.txt](https://docs.tonic.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tonic.ai/textual/datasets-preview-output/dataset-file-preview/file-preview-redacted-file.md).

# File preview for de-identified files

For a dataset that generates output files of the same type as the original file, the file preview displays the source and output versions of the file, and highlights the detected entity values.

From a file preview, you can change the entity type handling. For some file types, you can also add manual redactions.

<table data-view="cards"><thead><tr><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Select the view</strong><br><br>Display either the output or original version of the file.</td><td><a href="/pages/pvPoDtecZeZCKpfYz1Vh">/pages/pvPoDtecZeZCKpfYz1Vh</a></td></tr><tr><td><strong>Configure entity type handling</strong><br><br>Select the entity type handling option.</td><td><a href="/pages/bt3sMjOfw7Moi12JkriC">/pages/bt3sMjOfw7Moi12JkriC</a></td></tr><tr><td><strong>Add manual redactions</strong><br><br>Select text to redact and assign an entity type to.</td><td><a href="/pages/nWAWTMgPm0OUuOW3Yd6A">/pages/nWAWTMgPm0OUuOW3Yd6A</a></td></tr><tr><td><strong>Ignore entity instances in PDF files</strong><br><br>Ignore specific detected entity values in a PDF file.</td><td><a href="/pages/hj66KXHdNfpZjVVSVlDF">/pages/hj66KXHdNfpZjVVSVlDF</a></td></tr><tr><td><strong>Configure CSV columns</strong><br><br>Display column format and configuration options from a CSV file preview.</td><td><a href="/pages/p30RTVwZb87qrx4rMHyT">/pages/p30RTVwZb87qrx4rMHyT</a></td></tr></tbody></table>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## 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, and the optional `goal` query parameter:

```
GET https://docs.tonic.ai/textual/datasets-preview-output/dataset-file-preview/file-preview-redacted-file.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

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.