> 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/file-preview-entity-type-handling.md).

# Changing entity type handling

From the file preview, to select the [entity type handling option](/textual/dataset-configure-redaction/textual-datasets-select-handling-type.md#handling-options-available) for an entity type:

1. On either de-identified or original view, click a detected value.
2. On the details panel, click the entity type handling option. Textual applies the same option to all entity values of that type.

<figure><img src="/files/z7xYECtSMafubBFOyiqw" alt=""><figcaption><p>Selecting an entity type handling option</p></figcaption></figure>

For the **Synthesis** option, you can configure a specific replacement value for the original value. For example, for the original first name value John, you can specify to replace all instances with Michael.

<figure><img src="/files/1mle5K8R1UVQTVuwmkPO" alt=""><figcaption><p>Providing a specific replacement value for the original value</p></figcaption></figure>

You configure other synthesis options from the dataset details page. For more information, go to [Configuring entity type synthesis options](/textual/dataset-configure-redaction/textual-datasets-synthesis-options.md).


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