# Configuring column content types for CSV files

## Available column content types

When Textual processes a CSV file, it identifies the content of each column as one of the following:

* **Sensitive -** The column values are of a single type and format, and the values match an entity type.
* **Not sensitive -** The column values are of a single type and format, but the values do not match an entity type.
* **Unstructured -** Each column value might contain multiple entities of different types. For example, a column that contains notes or a longer description.

## Selecting the column content type

From the file preview, you can review and change the content type assignments for each column.

To change the assigned CSV column content type:

1. In the output table heading, click the dropdown icon.

<figure><img src="/files/gncCwy4RS0dej546GDgj" alt=""><figcaption><p>Column configuration panel for a CSV column</p></figcaption></figure>

2. On the configuration panel, click the column content type.
3. If you clicked **Sensitive**, then from the **Column entity type** dropdown list, select the entity type for the column values. Textual displays the current configured handling type for the selected entity type.
4. If you clicked **Sensitive** or **Not Sensitive**, then to save the changes, click **Save**.\
   \
   Changing the content type to Unstructured requires a rescan of the file. If you clicked **Unstructured**, then:
   1. To save the changes and rescan the file, click **Save & Scan**.
   2. To save the changes, but not rescan the file, click **Save**. If you save without rescanning the file, then Textual marks the file as requiring a rescan.


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