Important headlines, for example, attract more attention than secondary headlines. Remember, though, never to overuse emphasis. In a room full of shouting people, one more shout is unlikely to stand out. But a shout in a library or church is certain to attract attention. Reserve emphasis for the most important parts of your message.
Pull quotes are a useful tool to add emphasis and reinforce ideas.
A pull quote is a short quotation used as a graphic device to summarize surrounding material and draw attention to it. It is used to break up large amounts of body copy. As a design element, a pull quote can be set in large type, reversed or boxed. Add contrast to add interest Add visual contrast to your documents by using white space, typography and size. Setting headlines in a noticeably different typeface and type size will stimulate your readers' eyes.