Structural changes are changes that take place before the original artwork is put into live promotion. In essence NAIO gives the client a chance to review and make layout changes based upon the clients needs and wants. This happens before the public views the e-flyer. Once the e-flyer has reached satisfactory completion by the client it is ready for production. Structural changes are: “Any change that affects the integrity of the table or HTML code system used to hold the e-flyer graphics.”