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<Accordion title="More about preview results">

The `PreviewResults` object returned by `client.data_designer.preview` stores all its fields in memory; nothing is persisted to disk by default.
Use standard Python methods to save any preview data you want to keep around longer term.
For example, the `dataset` is a regular Pandas DataFrame and can be saved to disk via methods like `to_csv` or `to_parquet`.

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