A diagram showing five elements, called Title, Subtitle, Intro_Text, Body_Text, and Image, with their associated element types and element definitions. The Title and Subtitle elements are both text-only elements, whereas the Intro_Text and Body_Text elements are both WYSIWYG elements. The Image element is an image-only element. All elements are contained in a region definition called “Press_Release.” The diagram is explained in more detail in the surrounding text.