I would like to know if there is any addon or code where I can make the field to add notes to the form display functions of the rich text (like adding bold, italics, different colors in the letters).
Hi Rafael. That is not currently a feature of Gravity Forms and I am not aware of any add-ons for it. If you think this would make a good addition to Gravity Forms, I recommend adding a note to our product roadmap. Click the blue plus in the lower left on this page to add a note for our product team: