After you add a text area field to your data model, you can configure it to display a rich text editor at run time. By default, text area fields support plain text.
Access the field, based on the way that it is defined in your data model.
In the explorer panel of Designer Studio, click Data to display the Data Explorer.
Click the name of a data type.
Click the Data model tab.
In the explorer panel of Designer Studio, click Cases to display the Case Type Explorer.
Click the name of a case type.
Click the Data model tab.
Optional: To display fields that are inherited by your application, click Show reusable fields.
In the explorer panel of Designer Studio, click Cases to display the Case Type Explorer.
Click the name of a case type.
On the Views tab, click the name of a form.
Click the Gear icon in the row of the text area field.
In the Display as list, select Rich text.
Click Submit.