The built-in striphtml=1 parameter will remove all HTML from that value. But if there are specific tags you would like to leave, you'll need to specify exactly what to allow. Your shortcode for this example will look like [25 leave_html='em,i,b']. You can find more detail on using wp_kses in the codex.

Use this code to export only those entries that were created in January 2015. This example applies to a particular form. Change 129 to the ID of your form (in two places).

Use this code to limit the maximum number of characters accepted in a field.