HTML Caption Data Element
The HTML Caption data element allows you to add text to the donation form. For example, you might use this element to add instructions for a certain section. The text will span the entire width of the form, including the message area.
You can also use this element to add personalization, images, links, survey questions, and other features that are present in the HTML Editor. However, since you should avoid adding anything that will lead the user away from your form, items such as links and survey questions are best left for the Thank You Page.